Three-dimensional posture measurement and adjustment system and method for column body space of arch column on large-span arch bridge

Abstract

The application discloses a system and method for measuring and adjusting the three-dimensional posture of a column body of an arch column on a large-span arch bridge. The system comprises a column body coordinate marker, a column body adjusting device, and a three-dimensional acquisition and calculation device. When the column body of the arch column on the large-span arch bridge is connected and assembled, the three-dimensional posture measuring and adjusting system can be used for assistance to obtain the three-dimensional displacement target adjustment amount of the three-direction displacement jack mechanism in each group of column body adjusting devices, so that the connection and assembly of the column body of the arch column on the large-span arch bridge can be more quickly and accurately achieved to reach the target posture and position, thereby better meeting the accurate and rapid installation requirements of the column body of the arch column on the large-span arch bridge, improving the assembly efficiency of the column body of the arch column on the large-span arch bridge, ensuring the construction quality, saving the labor cost and safety management cost, and reducing the safety risk of construction operation.

Description

Technical Field

[0001] This invention relates to the field of bridge construction engineering technology, specifically to a system and method for measuring and adjusting the three-dimensional posture of the column body on the arch of a long-span arch bridge. Background Technology

[0002] The superstructure of a long-span arch bridge is a crucial component that transfers the load of the roadway system to the main arch ring. The superstructure consists of two parts: the column base and the column body. Bolted connections (or simply "bolted connections") are a popular method of connection between bridge components due to their standardized design, rapid construction, and green construction characteristics. In the superstructure of long-span arch bridges, the column body to be installed needs to be bolted to the already installed column base or column body. Because bolted connections require high precision in bolt hole positioning, the ability to quickly and accurately measure and adjust the three-dimensional spatial orientation of the arch bridge superstructure during construction to ensure successful bolting to the already installed column base or column body has significant engineering application value.

[0003] Currently, the columns of existing arch bridges are mainly connected to the installed column bases or bodies by welding. During construction, the posture of these columns is typically positioned by installing prisms or applying reflective tape to the top and bottom of the column, and the posture is adjusted by tensioning ropes at the top of the column. However, the application of these methods to spatial three-dimensional posture measurement and control during the construction of columns for long-span arch bridges presents the following problems:

[0004] 1. Regardless of whether a prism or reflective sticker is used, the measuring points are all arranged on the surface of the column, which cannot reflect the actual coordinates of the bolt holes, thus making it impossible to know whether bolting is possible;

[0005] 2. The selection of measuring point locations is not systematic, making it difficult to detect whether the spatial three-dimensional posture of the column on the arch has reached the predetermined target by measuring point coordinates;

[0006] 3. The method of adjusting the column posture by tensioning and slackling ropes is insufficient to meet the requirements for high-precision three-dimensional posture control and adjustment of the column body on a fully bolted arch.

[0007] Therefore, in order to address the above problems, it is necessary to propose a new method for measuring and controlling the spatial three-dimensional attitude of the column body during the construction of the arch of a long-span arch bridge. This method can overcome the difficulties in accurately monitoring the spatial three-dimensional attitude of the column body during the construction of the arch of a long-span arch bridge and the limitations in the means of high-precision control of the spatial three-dimensional attitude of the column body, thereby meeting the installation requirements of the column body of the arch of a long-span arch bridge. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a three-dimensional spatial attitude measurement and adjustment system for the arch support columns of large-span arch bridges. This system solves the problems of inaccurate monitoring of the three-dimensional spatial attitude of the arch support columns during construction and the limitations of high-precision control methods for the three-dimensional spatial attitude of the arch support columns. It better meets the requirements for precise and rapid installation of the arch support columns of large-span arch bridges, thereby helping to improve construction efficiency, save labor and safety management costs, ensure construction quality, and reduce safety operation risks.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A three-dimensional attitude measurement and adjustment system for the column body of a long-span arch bridge includes column body coordinate markers, column body adjustment devices, and three-dimensional acquisition and calculation devices.

[0011] The column coordinate marker is used to be fixedly installed in the bolt holes on the column to be assembled, so as to mark the three-dimensional spatial coordinates of the column by fixing multiple bolt hole coordinate markers on the column.

[0012] The column adjustment device includes a lower support platform, a three-way displacement jack mechanism, and an upper connecting bracket. The lower support platform is used to fix the column foot or column body already installed on the main arch rib of the long-span arch bridge, providing structural support for the upper connecting bracket. The upper connecting bracket is used to fix the lower part of the column body to be assembled, and the upper connecting bracket is installed above the lower support platform through the three-way displacement jack mechanism, so that the upper connecting bracket can undergo three-way displacement relative to the lower support platform in the horizontal, vertical, and longitudinal directions. The column adjustment device has multiple sets, which are used to fix the column body to different positions on the lower part of the column body to be assembled, and the three-way displacement data of the three-way displacement jack mechanism in each set of column adjustment devices is transmitted to the three-dimensional acquisition and calculation device.

[0013] The three-dimensional acquisition and calculation device includes a three-dimensional data acquisition instrument and a calculation computer. The three-dimensional data acquisition instrument is a binocular camera or a three-dimensional laser scanner, used to acquire the three-dimensional coordinates of each bolt hole coordinate marker fixedly installed on the column, obtain the three-dimensional spatial coordinates of each bolt hole coordinate marker, and transmit them to the calculation computer. The calculation computer is used to receive the three-dimensional displacement data of the three-dimensional displacement jack mechanism in each group of column adjustment devices, and uses the three-dimensional spatial coordinates of each bolt hole coordinate marker as the three-dimensional spatial coordinate data of the column. It also calculates the correlation between the change of the three-dimensional displacement data of the three-dimensional displacement jack mechanism in each group of column adjustment devices and the change of the three-dimensional spatial coordinate data of the column. Then, based on the displacement difference between the three-dimensional spatial coordinate data of the column and the target installation position coordinates, it uses the correlation to calculate the target adjustment amount of the three-dimensional displacement of the three-dimensional displacement jack mechanism in each group of column adjustment devices.

[0014] In the aforementioned three-dimensional attitude measurement and adjustment system for the column body of a large-span arch bridge, preferably, there are at least three column body coordinate markers, which are respectively fixedly installed in different non-collinear bolt holes in the bolt hole group of the column body to be assembled; the column body coordinate marker includes a screw part that can be threaded into the bolt hole on the column body, and a nut part with a diameter larger than the diameter of the screw part at the tail end of the screw part, and a circular groove with the screw axis collinear on the end face of the nut part, and a mark is provided at the center position of the bottom surface of the circular groove.

[0015] In the aforementioned three-dimensional attitude measurement and adjustment system for the column body of a large-span arch bridge, preferably, the column body adjustment device has at least three sets, each used to be fixedly connected to different non-collinear positions on the lower part of the column body to be assembled; each set of column body adjustment devices includes a three-way displacement jack mechanism comprising a vertical jack, a horizontal jack, and a longitudinal jack; wherein, the base of the longitudinal jack is fixed to the lower support platform, and the pushing end of the longitudinal jack is arranged horizontally and longitudinally and connected to a longitudinal sliding platform on the lower support platform, the longitudinal sliding platform being able to... The jack is driven by the pushing end to move back and forth along the horizontal longitudinal direction; the base of the horizontal jack is fixed on the longitudinal sliding platform, the pushing end of the horizontal jack is arranged horizontally and connected to the horizontal sliding platform on the longitudinal sliding platform, and the horizontal sliding platform can move back and forth along the horizontal longitudinal direction under the driving of the pushing end of the horizontal jack; the base of the vertical jack is fixed on the horizontal sliding platform, the pushing end of the vertical jack is arranged vertically and connected to the upper connecting bracket, so that the upper connecting bracket can rise and fall along the vertical direction under the driving of the pushing end of the vertical jack.

[0016] In the aforementioned three-dimensional attitude measurement and adjustment system for the column body of the arch-supported structure of a large-span arch bridge, preferably, the vertical, horizontal, and longitudinal jacks of the three-way displacement jack mechanism are all electric jacks; the three-way displacement data of the three-way displacement jack mechanism in each group of column body adjustment devices are transmitted to the calculation computer of the three-dimensional acquisition and calculation device via data communication through the electric control console of the electric jack; and the three-way displacement target adjustment amount of the three-way displacement jack mechanism in each group of column body adjustment devices calculated by the calculation computer of the three-dimensional acquisition and calculation device is also fed back to the electric control console of the corresponding electric jack in each group of column body adjustment devices via data communication, thereby controlling the three-way displacement jack mechanism in each group of column body adjustment devices to make adjustments.

[0017] In the aforementioned three-dimensional attitude measurement and adjustment system for the columns of a large-span arch bridge, preferably, regarding the correlation between the change in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in any nth group of column adjustment devices and the change in the three-dimensional spatial coordinates of any mth bolt hole coordinate marker on the column, the calculation computer in the three-dimensional acquisition and calculation device calculates the relationship by solving the following equation:

[0018]

[0019] Among them, C nm d represents the correlation matrix showing the influence of changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in the nth column adjustment device on the three-dimensional spatial coordinate changes of the mth bolt hole coordinate marker on the column; xns d yns d zns These represent the horizontal longitudinal x-displacement adjustment, horizontal transverse y-displacement adjustment, and vertical z-displacement adjustment of the three-way displacement jack mechanism in the nth group of column adjustment devices; d nmx d nmy d nmz These represent the d values ​​of the three-way displacement jack mechanism in the nth group of column adjustment devices. xns d yns d zns The displacement adjustment affects the three-dimensional spatial coordinates of the m-th bolt hole coordinate marker on the column, including the horizontal longitudinal x-change, horizontal transverse y-change, and vertical z-change; n = 1, 2, ..., N, m = 1, 2, ..., M, where N is the total number of column adjustment devices and M is the total number of bolt hole coordinate markers installed on the column.

[0020] In the aforementioned three-dimensional attitude measurement and adjustment system for the columns of a large-span arch bridge, preferably, the calculation computer in the three-dimensional acquisition and calculation device calculates the target adjustment amount of the three-dimensional displacement jack mechanism in each group of column adjustment devices using the following formula:

[0021]

[0022] Among them, C nm d represents the correlation matrix showing the influence of changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in the nth column adjustment device on the three-dimensional spatial coordinate changes of the mth bolt hole coordinate marker on the column; km (t) represents the displacement difference between the current three-dimensional spatial coordinate data of the m-th bolt hole coordinate marker on the column and its target coordinate position; d xns (t), d yns (t), d zns(t) represents the target adjustment amount of the horizontal longitudinal x displacement, the target adjustment amount of the horizontal transverse y displacement, and the target adjustment amount of the vertical z displacement of the three-way displacement jack mechanism in the nth column adjustment device; n = 1, 2, ..., N, m = 1, 2, ..., M, N is the total number of columns adjustment devices, and M is the total number of bolt hole coordinate markers installed on the column.

[0023] Accordingly, the present invention also provides a method for measuring and adjusting the three-dimensional spatial attitude of the column body on the arch of a long-span arch bridge, which is implemented using the above-mentioned three-dimensional spatial attitude measurement and adjustment system for the column body on the arch of a long-span arch bridge, and includes the following steps:

[0024] S1. Select at least three non-collinear bolt holes as measuring points from the bolt hole group of the column to be assembled, and install column coordinate markers on them respectively, so as to mark the three-dimensional spatial coordinates of the column by fixing multiple bolt hole coordinate markers on the column.

[0025] S2. Lift the column to be assembled to the position above the already installed column foot or column on the main arch rib of the large-span arch bridge. Select at least three non-collinear positions on the lower part of the column to be assembled and install column adjustment devices at each position. Each set of column adjustment devices includes a lower support platform, a three-way displacement jack mechanism, and an upper connecting bracket. The lower support platform is used to fix the column foot or column already installed on the main arch rib of the large-span arch bridge and to provide structural support for the upper connecting bracket. The upper connecting bracket is used to fix the lower part of the column to be assembled and is installed above the lower support platform through the three-way displacement jack mechanism, so that the upper connecting bracket can undergo three-way displacement relative to the lower support platform in the horizontal, vertical, and longitudinal directions. Each set of column adjustment devices transmits the three-way displacement data of its three-way displacement jack mechanism to the three-dimensional acquisition and calculation device.

[0026] S3. The column adjustment device undergoes calibration and adjustment testing. The three-dimensional displacement of the three-way displacement jack mechanism in each group of column adjustment devices is adjusted multiple times, causing various changes in the three-dimensional spatial posture of the column. During the calibration and adjustment testing, the three-dimensional data acquisition instrument of the three-dimensional acquisition and calculation device acquires the three-dimensional coordinates of each bolt hole coordinate marker fixed on the column, obtaining the three-dimensional spatial coordinates of each bolt hole coordinate marker and transmitting them to the calculation computer. The calculation computer of the three-dimensional acquisition and calculation device receives the three-dimensional displacement data of the three-way displacement jack mechanism in each group of column adjustment devices and uses the three-dimensional spatial coordinates of each bolt hole coordinate marker as the three-dimensional spatial coordinate data of the column. Based on the data obtained during the calibration and adjustment testing of the column adjustment device, the correlation between the changes in the three-dimensional displacement data of the three-way displacement jack mechanism in each group of column adjustment devices and the changes in the three-dimensional spatial coordinate data of the column is calculated.

[0027] S4. Through three-dimensional spatial coordinate calculation, the target coordinate positions of each bolt hole coordinate marker on the column are obtained when the column reaches the target installation position. The results are input to the calculation computer of the three-dimensional acquisition and calculation device as the target installation position coordinate data of the column. The three-dimensional acquisition and calculation device obtains the current three-dimensional spatial coordinates of each bolt hole coordinate marker on the column through a three-dimensional data acquisition instrument and transmits them to the calculation computer as the current three-dimensional spatial coordinate data of the column. Based on the displacement difference between the current three-dimensional spatial coordinate data of the column and the target installation position coordinates, the calculation computer uses the aforementioned correlation and influence relationship to calculate the target adjustment amount of the three-dimensional displacement jack mechanism in each group of column adjustment devices.

[0028] S5. According to the calculated target adjustment amount of the three-way displacement jack mechanism in each group of column adjustment devices, adjust the three-way displacement of the three-way displacement jack mechanism in each group of column adjustment devices, so that the column is adjusted to the target installation position.

[0029] S6. Perform assembly and connection construction on the column body to be assembled. After the construction is completed, remove the column body coordinate markers and column body adjustment devices.

[0030] In the above-mentioned method for measuring and adjusting the three-dimensional attitude of the column body on the arch of a large-span arch bridge, preferably, in step S5, after adjusting the three-dimensional displacement of the three-dimensional displacement jack mechanism in each group of column body adjustment devices, the method further includes: re-measuring the three-dimensional spatial coordinates of each bolt hole coordinate marker on the column body to confirm whether each bolt hole coordinate marker has reached the target coordinate position; if it has not yet reached the target position, return to step S4 to continue the calculation; if it has reached the target position, it indicates that the column body has been adjusted to the target installation position, and step S6 is executed.

[0031] In the above-mentioned method for measuring and adjusting the three-dimensional attitude of the column body on the arch of a large-span arch bridge, preferably, in step S3, regarding the correlation between the change of the three-dimensional displacement data of the three-dimensional displacement jack mechanism in any nth group of column body adjustment devices and the change of the three-dimensional spatial coordinates of any mth bolt hole coordinate marker on the column body, the calculation computer in the three-dimensional acquisition and calculation device calculates by solving the following equation:

[0032]

[0033] Among them, C nm d represents the correlation matrix showing the influence of changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in the nth column adjustment device on the three-dimensional spatial coordinate changes of the mth bolt hole coordinate marker on the column; xns d yns d znsThese represent the horizontal longitudinal x-displacement adjustment, horizontal transverse y-displacement adjustment, and vertical z-displacement adjustment of the three-way displacement jack mechanism in the nth group of column adjustment devices during calibration and adjustment testing; d nmx d nmy d nmz These represent the d values ​​of the three-way displacement jack mechanism in the nth group of column adjustment devices during calibration and adjustment tests. xns d yns d zns The displacement adjustment affects the three-dimensional spatial coordinates of the m-th bolt hole coordinate marker on the column, including the horizontal longitudinal x-change, horizontal transverse y-change, and vertical z-change; n = 1, 2, ..., N, m = 1, 2, ..., M, where N is the total number of column adjustment devices and M is the total number of bolt hole coordinate markers installed on the column.

[0034] In the above-mentioned method for measuring and adjusting the three-dimensional attitude of the column body on the arch of a large-span arch bridge, preferably, in step S4, the calculation computer in the three-dimensional acquisition and calculation device calculates the target adjustment amount of the three-dimensional displacement jack mechanism in each group of column body adjustment devices using the following formula:

[0035]

[0036] Among them, C nm d represents the correlation matrix showing the influence of changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in the nth column adjustment device on the three-dimensional spatial coordinate changes of the mth bolt hole coordinate marker on the column; km (t) represents the displacement difference between the current three-dimensional spatial coordinate data of the m-th bolt hole coordinate marker on the column and its target coordinate position; d xns (t), d yns (t), d zns (t) represents the target adjustment amount of the horizontal longitudinal x displacement, the target adjustment amount of the horizontal transverse y displacement, and the target adjustment amount of the vertical z displacement of the three-way displacement jack mechanism in the nth column adjustment device; n = 1, 2, ..., N, m = 1, 2, ..., M, N is the total number of columns adjustment devices, and M is the total number of bolt hole coordinate markers installed on the column.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] 1. The three-dimensional attitude measurement and adjustment system for the column body of the arch on the large-span arch bridge provided by the present invention has fewer components, simple structure, low installation accuracy requirements, and is easy to assemble and construct on site. Therefore, it can be easily built and applied in the construction of adjusting the attitude of the column body of the arch on the bridge.

[0039] 2. With the help of the three-dimensional spatial posture measurement and adjustment system of the column body of the large-span arch bridge, the column body can be connected and adjusted in various directions for translation and rotation. This enables the column body to reach the target posture and position more quickly and accurately, improves the assembly and construction efficiency of the column body of the large-span arch bridge, and helps to save labor and safety management costs.

[0040] 3. The present invention utilizes the above-mentioned system's method for measuring and adjusting the three-dimensional spatial posture of the arch-supported column body of a large-span arch bridge, which enables the arch-supported column body to quickly and accurately reach the target posture, meeting the adjustment accuracy requirements of the bolted arch-supported column body; and clarifies the specific adjustment method steps, after completing the adjustment steps as required, the precise control of the three-dimensional posture of the arch-supported column body can be achieved. Attached Figure Description

[0041] To make the objectives, technical solutions, and advantages of the invention clearer, the invention will now be described in further detail with reference to the accompanying drawings, wherein:

[0042] Figure 1 This is a front view schematic diagram of the installation status of the three-dimensional attitude measurement and adjustment system for the column body of the large-span arch bridge of the present invention.

[0043] Figure 2 This is a side view schematic diagram of the installation state of the three-dimensional attitude measurement and adjustment system for the column body of the large-span arch bridge of the present invention.

[0044] Figure 3 This is a schematic diagram of the structural design of the column coordinate marker component.

[0045] Figure 4 This is a schematic diagram showing the arrangement of the column structure to be assembled and the column coordinate markers in the embodiment.

[0046] Figure 5 This is a schematic diagram showing the arrangement of the column adjustment device in the embodiment.

[0047] Figure label:

[0048] Column coordinate marker 1, column adjustment device 2, three-dimensional acquisition and calculation device 3;

[0049] Screw part 11, nut part 12, mark 13;

[0050] The lower support platform 21 and the three-way displacement jack mechanism 22; the upper connecting bracket 23; the vertical jack 221, the horizontal jack 222, the longitudinal jack 223, the longitudinal sliding platform 224, the horizontal sliding platform 225, the longitudinal slide rail 226, and the horizontal slide rail 227.

[0051] 31. Three-dimensional data acquisition instrument; 32. Measurement computer. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but only to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0053] The terms "first," "second," and similar words used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" mean that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0054] This invention provides a three-dimensional spatial attitude measurement and adjustment system for the columns of a long-span arch bridge, such as... Figure 1 and Figure 2 As shown, it includes a column coordinate marker 1, a column adjustment device 2, and a three-dimensional acquisition and calculation device 3.

[0055] Among them, the column body coordinate marker 1 is used to be fixedly installed in the bolt holes on the column body to be assembled, so as to mark the three-dimensional spatial coordinates of the column body by fixing multiple bolt hole coordinate markers on the column body.

[0056] The column adjustment device 2 includes a lower support platform 21, a three-way displacement jack mechanism 22, and an upper connecting bracket 23. The lower support platform 21 is used to fix the column foot or column body already installed on the main arch rib of the long-span arch bridge, and to provide structural support for the upper connecting bracket 23. The upper connecting bracket 23 is used to fix the lower part of the column body to be assembled, and the upper connecting bracket 23 is installed above the lower support platform 21 through the three-way displacement jack mechanism 22, so that the upper connecting bracket 23 can undergo three-way displacement relative to the lower support platform 21 in the horizontal, vertical, and longitudinal directions. The column adjustment device 2 has multiple sets, which are used to fix the column body to different positions on the lower part of the column body to be assembled, and the three-way displacement data of the three-way displacement jack mechanism 22 in each set of column adjustment devices 2 is transmitted to the three-dimensional acquisition and calculation device 3.

[0057] The three-dimensional acquisition and calculation device 3 includes a three-dimensional data acquisition instrument 31 and a calculation computer 32. The three-dimensional data acquisition instrument 31 is a binocular camera or a three-dimensional laser scanner, used to acquire the three-dimensional coordinates of each bolt hole coordinate marker fixedly installed on the column, obtain the three-dimensional spatial coordinates of each bolt hole coordinate marker, and transmit them to the calculation computer 32. The calculation computer 32 is used to receive the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2, and uses the three-dimensional spatial coordinates of each column coordinate marker 1 as the three-dimensional spatial coordinate data of the column, and calculates the correlation between the change of the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2 and the change of the three-dimensional spatial coordinate data of the column. Then, based on the displacement difference between the three-dimensional spatial coordinate data of the column and the target installation position coordinates, the target adjustment amount of the three-dimensional displacement of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2 is calculated using the correlation relationship.

[0058] The three-dimensional attitude measurement and adjustment system for the arch-supported columns of a large-span arch bridge, provided by this invention, can assist in the connection and assembly construction of the columns. Multiple (at least three) column coordinate markers 1 are installed on the column to be assembled to mark its three-dimensional spatial coordinates. Column adjustment devices 2 are installed between the column to be assembled and its target installation position, at the column foot or between the column and the target installation position. These devices provide auxiliary stable support and precise adjustment of the column's three-dimensional attitude. The three-dimensional acquisition and calculation device 3 calculates and processes the target three-dimensional displacement of the three-dimensional displacement jack mechanism 22 in each set of column adjustment devices 2, enabling the connection and assembly construction of the arch-supported columns to achieve the target attitude and position more quickly and accurately. This better meets the requirements for precise and rapid installation of the arch-supported columns of large-span arch bridges, improves the assembly construction efficiency of the arch-supported columns, ensures construction quality, helps save labor and safety management costs, and reduces the safety risks of construction operations.

[0059] In practical implementation, at least three column coordinate markers 1 are used to be fixedly installed in different non-collinear bolt holes within the bolt hole group of the column to be assembled. This makes each bolt hole on the column with a column coordinate marker 1 a measuring point for three-dimensional coordinate measurement. Three or more measuring points are required, and these points must be non-collinear, meaning the lines connecting the measuring points are not straight lines, to ensure accurate measurement of the column's three-dimensional spatial coordinate data. In specific design, a single column coordinate marker 1 can be designed as follows: Figure 3 The structure shown includes a threaded rod portion 11 that can be threaded into bolt holes on the column. At the tail end of the threaded rod portion 11 is a nut portion 12 with a diameter larger than that of the threaded rod portion. A circular groove, collinear with the axis of the threaded rod, is provided on the end face of the nut portion 12. A mark 13 is provided at the center of the bottom surface of the circular groove; the mark 13 can be a prism or a reflective sticker. This column coordinate marker 1, with its design, can be easily fixed at any position within the group of bolt holes on the column. Furthermore, the circular groove on the nut portion 12 and the mark 13 at the center of the bottom surface of the circular groove constitute easily identifiable features for coordinate position identification, facilitating identification and coordinate acquisition by the three-dimensional data acquisition instrument 31 in the three-dimensional acquisition and calculation device 3.

[0060] In practice, at least three sets of column adjustment devices 2 are arranged, each used to fix and connect to different non-collinear positions on the lower part of the column to be assembled. The need to arrange three or more sets of column adjustment devices 2 is to provide relatively stable auxiliary support for the column to be assembled, while also providing sufficient flexibility for adjusting the three-dimensional spatial posture of the column, making it easier to ensure proper adjustment.

[0061] In terms of specific design, the three-way displacement jack mechanism 22 in each set of column adjustment device 2 includes a vertical jack 221, a horizontal jack 222 and a longitudinal jack 223. The base of the longitudinal jack 223 is fixed on the lower support platform 21. The pushing end of the longitudinal jack 223 is arranged horizontally and longitudinally and connected to the longitudinal sliding platform 224 on the lower support platform 21. The longitudinal sliding platform 224 can reciprocate along the horizontal longitudinal direction under the action of the pushing end of the longitudinal jack 223. The base of the transverse jack 222 is fixed on the longitudinal sliding platform 224. The pushing end of the transverse jack 222 is arranged horizontally and transversely and connected to the transverse sliding platform 225 on the longitudinal sliding platform 224. The transverse sliding platform 225 can reciprocate along the horizontal transverse direction under the action of the pushing end of the transverse jack 222. The base of the vertical jack 221 is fixed on the transverse sliding platform 225. The pushing end of the vertical jack 221 is arranged vertically and connected to the upper connecting bracket 23, so that the upper connecting bracket 23 can rise and fall in the vertical direction under the action of the pushing end of the vertical jack 221. In specific implementation, in order to better ensure that the longitudinal sliding table 224 slides smoothly on the lower support table 21, a longitudinal slide rail 226 can be arranged on the lower support table 21, so that the longitudinal sliding table 224 can move back and forth on the longitudinal slide rail 226 to reduce sliding friction; similarly, a transverse slide rail 227 can be arranged on the longitudinal sliding table 224, so that the transverse sliding table 225 can move back and forth on the transverse slide rail 227 to reduce sliding friction, so as to better ensure that the transverse sliding table 225 slides smoothly on the longitudinal sliding table 224.

[0062] Thus, through the design scheme of the three-way displacement jack mechanism 22 described above, the vertical jack 221, the horizontal jack 222 and the longitudinal jack 223 can be used to adjust the horizontal longitudinal x, horizontal lateral y and vertical z positions of the upper connecting bracket 233 supported above, thereby driving the three-way spatial posture of the column to be flexibly adjusted, and can well ensure the adjustment accuracy of the three-dimensional position of the column. It is simple to operate and easy to construct.

[0063] In the three-way displacement jack mechanism 22, the vertical jack 221, the horizontal jack 222, and the longitudinal jack 223 are all electric jacks. Thus, the three-way displacement data of the three-way displacement jack mechanisms 22 in each group of column adjustment devices 2 are transmitted via data communication from the electric control console of the electric jack to the calculation computer 32 of the three-dimensional acquisition and calculation device 3. The three-way displacement target adjustment amount of the three-way displacement jack mechanisms 22 in each group of column adjustment devices 2, calculated by the calculation computer 32 of the three-dimensional acquisition and calculation device 3, is also fed back via data communication to the electric control console of the corresponding electric jack in each group of column adjustment devices 2, thereby controlling the three-way displacement jack mechanisms 22 in each group of column adjustment devices 2 to make adjustments. Therefore, by using the data communication between the electric control console of the electric jack and the measuring computer 32, it is possible to more conveniently and accurately transmit, collect, and adjust the three-dimensional displacement data of each column adjustment device 2. In specific implementation, the data communication between the electric control console of the electric jack and the measuring computer 32 can be wired through a data transmission cable or wirelessly through Bluetooth, wireless LAN, or other wireless data transmission methods.

[0064] Accordingly, the present invention, using the aforementioned spatial three-dimensional attitude measurement and adjustment system, provides a method for measuring and adjusting the spatial three-dimensional attitude of the column body on the arch of a long-span arch bridge, comprising the following steps:

[0065] S1. Select at least three non-collinear bolt holes as measuring points from the bolt hole group of the column body to be assembled, and install column body coordinate marker 1 on each of them to mark the three-dimensional spatial coordinates of the column body by fixing multiple bolt hole coordinate markers on the column body.

[0066] At least three measuring points should be placed on the column, but not too many, to avoid excessive calculations in the later measurement stages. For example, it is generally recommended to place 3 to 6 measuring points.

[0067] S2. Lift the column to be assembled to the position above the already installed column foot or column on the main arch rib of the large-span arch bridge. Select at least three non-collinear positions on the lower part of the column to be assembled and install the column adjustment device 2. Each set of column adjustment devices 2 includes a lower support platform 21, a three-way displacement jack mechanism 22, and an upper connecting bracket 23. The lower support platform 21 is used to fix the column foot or column already installed on the main arch rib of the large-span arch bridge and to provide structural support for the upper connecting bracket 23. The upper connecting bracket 23 is used to fix the lower part of the column to be assembled, and the upper connecting bracket 23 is installed above the lower support platform 21 through the three-way displacement jack mechanism 22, so that the upper connecting bracket 23 can move in three directions relative to the lower support platform 21: horizontal, vertical, and lateral. Each set of column adjustment devices 2 transmits the three-way displacement data of its three-way displacement jack mechanism 22 to the three-dimensional acquisition and calculation device 3.

[0068] In practice, the lower support platform 21 adopts a plate-shaped installation platform or a bracket structure installation base, which serves to provide structural support for the upper connecting bracket 23. If a plate-shaped structural material is used, it is best to use a hard metal material with good support strength, such as steel, and the thickness can be determined according to the total weight to be supported. The upper connecting bracket 23 can be made of steel, and its overall shape can be designed as a rectangular plate. During installation, after the column to be assembled is lifted by ropes or a crane and moved to the position above the installed column foot or column body on the main arch rib of the large-span arch bridge, the upper connecting bracket 23 can be welded to the lower part of the column to be assembled at the selected installation position. The lower support platform 21 is then welded to the installed column foot or column body below the upper connecting bracket 23. A three-way displacement jack mechanism 22 is then built on the lower support platform 21. The column to be assembled can then be lowered appropriately, so that the upper connecting bracket 23 and the lower support platform 21 are provided with auxiliary support through the three-way displacement jack mechanism 22. With the displacement adjustment of the three-way displacement jack mechanism 22, the upper connecting bracket 23 can undergo three-way displacement relative to the lower support platform 21 in the horizontal, vertical, and longitudinal directions, thereby controlling and adjusting the three-dimensional spatial posture of the column.

[0069] In the specific arrangement, the column adjustment device 2 can be installed at at least three different non-collinear positions on the lower part of the column to be assembled. The non-collinear arrangement of the column adjustment device 2 positions, that is, the lines connecting the installation positions of each column adjustment device 2 are not on a straight line, is to ensure flexible adjustment of the three-dimensional spatial posture of the column.

[0070] At the same time, the number of sets of column adjustment devices 2 should not be too large to avoid excessive calculations in the later measurement stage. For example, it is generally recommended to install 3 to 4 sets of column adjustment devices 2.

[0071] S3. A calibration and adjustment test is performed on the column adjustment device 2. The three-dimensional displacement of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2 is adjusted multiple times, causing the three-dimensional spatial posture of the column to change multiple times. During the calibration and adjustment test of the column adjustment device 2, the three-dimensional data acquisition instrument 31 of the three-dimensional acquisition and calculation device 3 acquires the three-dimensional coordinates of each bolt hole coordinate marker fixed on the column, obtains the three-dimensional spatial coordinates of each bolt hole coordinate marker, and transmits them to the calculation computer 32. The calculation computer 32 of the three-dimensional acquisition and calculation device 3 receives the three-dimensional displacement data of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2, and uses the three-dimensional spatial coordinates of each bolt hole coordinate marker as the three-dimensional spatial coordinate data of the column. Based on the data obtained during the calibration and adjustment test of the column adjustment device 2, the correlation and influence relationship between the changes in the three-dimensional displacement data of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2 and the changes in the three-dimensional spatial coordinate data of the column is calculated.

[0072] This step aims to establish the correlation between the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in each set of column adjustment devices 2 and the changes in the three-dimensional spatial coordinate data of the column. During the calibration and adjustment test, multiple rounds of testing can be conducted. In each round, the three-dimensional displacement of the three-dimensional displacement jack mechanism 22 in one set of column adjustment devices 2 is adjusted. Correspondingly, the change in the three-dimensional spatial coordinate displacement of the bolt hole coordinate marker at the measuring point caused by each of the three-dimensional displacements of this set of three-dimensional displacement jack mechanisms 22 is measured. This allows the establishment of an equation relating the displacement changes between the two. Furthermore, each round of adjustment for one set of three-dimensional displacement jack mechanisms 22 in the column adjustment device 2 can be performed multiple times to obtain multiple sets of the three-dimensional displacement jack mechanism data. The data on the changes in the three-dimensional displacement data of the structure 22 and the data on the changes in the three-dimensional spatial coordinates of each bolt hole coordinate marker on the column can be used to establish a system of equations to solve the relationship between the two displacement changes. Then, another round of calibration and adjustment tests is carried out on the three-dimensional displacement jack mechanism 22 in another set of column adjustment devices 2. By repeating this operation, the correlation between the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in all sets of column adjustment devices 2 and the changes in the three-dimensional spatial coordinate data of the column can be obtained.

[0073] For example, let C be the correlation matrix between the change in unit triaxial displacement of the nth triaxial displacement jack mechanism 22 and the triaxial displacement of the mth measuring point. nm n = 1, 2, ..., N, m = 1, 2, ..., M, where N is the total number of sets of column adjustment devices 2 and M is the total number of bolt hole coordinate markers installed on the column.

[0074] For the calibration and adjustment test performed on the three-dimensional displacement jack mechanism 22 in the No. 1 column adjustment device 2, the correlation matrix C of the change in unit three-dimensional displacement of the No. 1 three-dimensional displacement jack mechanism 22 on the three-dimensional displacement of the No. 1 measuring point is obtained. 11 The correlation matrix of the three-dimensional displacement of measuring point 2 is C. 12 The correlation matrix of the three-dimensional displacement of measuring point m is C. 1m .

[0075] Then we have:

[0076]

[0077] Where, d xns The displacement adjustment amount of the longitudinal bridge jack of the nth three-way displacement jack mechanism; d yns The displacement adjustment amount of the jack 22 in the transverse direction of the nth three-way displacement jack mechanism; d zns The displacement adjustment amount of the vertical jack 221 of the nth three-way displacement jack mechanism 22; d nmx This represents the longitudinal bridge displacement at measuring point m under the influence of displacement 22 of the nth three-dimensional displacement jack mechanism; d nmy This represents the transverse bridge displacement at measuring point m under the influence of displacement 22 of the nth three-dimensional displacement jack mechanism; d nmz This represents the vertical displacement of the m-th measuring point under the influence of the displacement of the n-th three-dimensional displacement jack mechanism 22.

[0078] Similarly, for the calibration and adjustment test performed on the three-way displacement jack mechanism 22 in column adjustment device 2, we have:

[0079]

[0080] Similarly, for the calibration and adjustment test performed on the three-way displacement jack mechanism 22 in the nth column adjustment device 2, we have:

[0081]

[0082] In other words, regarding the correlation between the change in the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in any nth group of column adjustment devices 2 and the change in the three-dimensional spatial coordinates of any mth bolt hole coordinate marker on the column, the calculation computer 32 in the three-dimensional acquisition and calculation device 3 calculates by solving the equation in Equation 3 above. Wherein, C nm This represents the matrix showing the correlation between the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in the nth column adjustment device 2 and the changes in the three-dimensional spatial coordinates of the mth bolt hole coordinate marker on the column; d xns d yns d znsThese represent the horizontal longitudinal x-displacement adjustment, horizontal transverse y-displacement adjustment, and vertical z-displacement adjustment of the three-way displacement jack mechanism 22 in the nth column adjustment device 2; d nmx d nmy d nmz These represent the d values ​​of the three-way displacement jack mechanism 22 in the nth column adjustment device 2. xns d yns d zns The displacement adjustment affects the three-dimensional spatial coordinates of the m-th bolt hole coordinate marker on the column, including the horizontal longitudinal x-change, horizontal transverse y-change, and vertical z-change; n = 1, 2, ..., N, m = 1, 2, ..., M, where N is the total number of columns of the adjustment device 2, and M is the total number of bolt hole coordinate markers installed on the column.

[0083] S4. By calculating the three-dimensional spatial coordinates, the target coordinate positions of the bolt hole coordinate markers on the column are obtained when the column reaches the target installation position. The results are then input into the calculation computer 32 of the three-dimensional acquisition and calculation device 3 as the target installation position coordinate data of the column. The three-dimensional acquisition and calculation device 3 obtains the current three-dimensional spatial coordinates of the bolt hole coordinate markers on the column through the three-dimensional data acquisition instrument 31 and transmits them to the calculation computer 32 as the current three-dimensional spatial coordinate data of the column. Based on the displacement difference between the current three-dimensional spatial coordinate data of the column and the target installation position coordinates, the calculation computer 32 uses the aforementioned correlation and influence relationship to calculate the target adjustment amount of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2.

[0084] In this step, the target adjustment amount of the three-dimensional displacement of the three-dimensional displacement jack mechanism 22 in each set of column adjustment devices 2 is determined to adjust the column to the target installation position. This step first requires calculating the target coordinate positions of the bolt hole coordinate markers on the column when it reaches the target installation position using three-dimensional spatial coordinates. This result is then input into the calculation computer 32 of the three-dimensional acquisition and calculation device 3 as the target installation position coordinate data of the column. In practice, a three-dimensional finite element modeling simulation software can be used to model and simulate the target coordinate positions of the bolt hole coordinate markers on the column when it reaches the target installation position. Three-dimensional finite element modeling simulation software is a commonly used existing technology in the field and will not be elaborated further. Then, the current three-dimensional spatial coordinates of the bolt hole coordinate markers on the column are obtained through the three-dimensional data acquisition instrument 31 and transmitted to the calculation computer 32 as the current three-dimensional spatial coordinate data of the column. The calculation computer 32 then calculates the displacement difference between the current three-dimensional spatial coordinate data of the column and the target installation position coordinates.

[0085] For example, the current measured three-dimensional spatial coordinates of measuring point 1 are: The current measured three-dimensional spatial coordinates of measuring point 2 are: The current measured three-dimensional spatial coordinates of measuring point m are: ...

[0086] If the target coordinate position of the first measuring point is determined by three-dimensional spatial coordinate measurement as (x... l1 ,y l1 ,z l1 ) T The target coordinates of the second measuring point are (x... l2 ,y l2 ,z l2 ) T The target coordinates of the m-th measuring point are (x...). lm ,y lm ,z lm ) T Therefore, the displacement difference between the current three-dimensional spatial coordinates of measuring point 1 and its target coordinate position. The displacement difference between the current three-dimensional spatial coordinates of measuring point 2 and its target coordinate position …, the displacement difference between the current three-dimensional spatial coordinates of measuring point m and its target coordinate position. ...

[0087] If there are M measurement points in total, then the displacement difference between the current three-dimensional spatial coordinates of all M measurement points and their target coordinate positions is obtained:

[0088]

[0089] This deviation value D k (t) represents the displacement difference between the current three-dimensional spatial coordinates of the column and the coordinates of the target installation position. This deviation value D... k (t) If adjustment and correction are required through the three-way displacement jack mechanism 22 in each set of column adjustment devices 2, it means that the deviation D k The correction amount (t) is the vector sum of the three-way displacement of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2 with respect to the change in the target coordinate position of each bolt hole coordinate marker, which can be expressed as:

[0090]

[0091] By combining Equations 5 and 3, we can conclude that:

[0092]

[0093] Among them, C nmThis represents the matrix showing the correlation between the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in the nth column adjustment device 2 and the changes in the three-dimensional spatial coordinates of the mth bolt hole coordinate marker on the column; d km (t) represents the displacement difference between the current three-dimensional spatial coordinate data of the m-th bolt hole coordinate marker on the column and its target coordinate position; d xns (t), d yns (t), d zns (t) represent the target adjustment amounts of the horizontal longitudinal x displacement, horizontal transverse y displacement, and vertical z displacement of the three-way displacement jack mechanism 22 in the nth column adjustment device 2, respectively; n = 1, 2, ..., N, m = 1, 2, ..., M, where N is the total number of columns of adjustment device 2 and M is the total number of bolt hole coordinate markers installed on the column.

[0094] Equation 6 shows that the calculation computer 32 in the three-dimensional acquisition and calculation device 3 can calculate the target adjustment amount of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2 using the following formula:

[0095]

[0096] Thus, the target adjustment amount of the three-way displacement of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2 is obtained.

[0097] S5. According to the calculated target adjustment amount of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2, adjust the three-way displacement of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2, so that the column is adjusted to the target installation position.

[0098] This process allows for the proceduralization and standardization of the column's three-dimensional spatial position adjustment steps, making the column's position adjustment operation clearer. It also better ensures the accuracy of the column's three-dimensional spatial position adjustment, avoiding problems such as low construction efficiency and poor adjustment accuracy caused by unclear operation steps and randomness in the column adjustment construction process.

[0099] Furthermore, in step S5, after adjusting the three-dimensional displacement of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2, the three-dimensional spatial coordinates of each bolt hole coordinate marker on the column can be further re-measured to confirm whether each bolt hole coordinate marker has reached the target coordinate position. If it has not yet reached the target position, the process returns to step S4 to continue the calculation. If it has reached the target position, it indicates that the column has been adjusted to the target installation position, and step S6 is executed. This further ensures the accuracy of the three-dimensional spatial position adjustment of the column.

[0100] S6. Perform assembly and connection construction on the column body to be assembled. After the construction is completed, remove the column body coordinate marker 1 and the column body adjustment device 2.

[0101] The process of removing the column coordinate marker 1 and the column adjustment device 2 is the reverse process of installation. You can remove the column coordinate marker 1 first, and then remove the column adjustment device 2.

[0102] As can be seen, this invention provides a three-dimensional spatial attitude measurement and adjustment system and method for the columns of a large-span arch bridge. Multiple column coordinate markers 1 are used to mark the three-dimensional spatial coordinates of the columns, serving as measurement points for adjusting the three-dimensional spatial attitude of the columns. Simultaneously, column adjustment devices 2 provide auxiliary stable support and precise adjustment of the three-dimensional spatial attitude of the columns to be assembled. The three-dimensional acquisition and calculation device 3 calculates and processes the target three-dimensional displacement of the three-dimensional displacement jack mechanism 22 in each set of column adjustment devices 2, enabling the connection and assembly of the columns to achieve the target attitude and position more quickly and accurately. This better meets the precise and rapid installation requirements of the columns of a large-span arch bridge, improves the assembly efficiency of the columns, ensures construction quality, helps save labor and safety management costs, and reduces the safety risks of construction operations.

[0103] Example

[0104] The present invention will be further illustrated by an example.

[0105] The specific steps of this invention will be illustrated using a column on a bridge arch as an example. It should be noted that the various dimensional parameters in this embodiment are design values ​​for construction and do not account for tolerances; however, in actual construction applications, reasonable manufacturing and installation tolerances are permissible. These will be explained in detail below.

[0106] The column to be installed on the arch has a height of 37m, a transverse width of 2.5m, a longitudinal length of 2m, and bolt hole diameters of 28mm and depths of 20mm. The elevation view of the column is shown below. Figure 4 As shown.

[0107] Step (1): Select from the group of screw holes of the column body to be assembled, such as... Figure 4 The three bolt holes marked 1, 2, and 3 are used to install column coordinate markers 1, which are used as measuring points to mark the three-dimensional spatial coordinates of the column.

[0108] The bolt holes selected as measuring points on the column to be assembled should ideally meet the following requirements:

[0109] 1. The number of bolt hole measuring points should not be less than or equal to 3;

[0110] 2. The selected connecting lines are not on a straight line (not collinear);

[0111] 3. It is best to select bolt holes as measuring points in both the top and bottom bolt groups of the column to be assembled.

[0112] In this embodiment, the number of bolt hole measuring points is selected as 3.

[0113] Step (2): Screw the column coordinate marker 1 into the bolt hole selected as the measuring point, and measure the three-dimensional spatial coordinates of the center position of the column coordinate marker 1.

[0114] Step (3): Lift the column to be assembled to the position above the installed column foot or column body on the main arch rib of the large-span arch bridge. Select at least three non-collinear positions on the lower part of the column to be assembled and install the column adjustment device 2 at each of these positions. The column adjustment device 2 shall be arranged in no fewer than three groups, and each group of column adjustment devices 2 shall be fixedly connected to different non-collinear positions on the lower part of the column to be assembled. In this embodiment, the column adjustment device 2 consists of three three-way displacement jack mechanisms 22 and their supporting components. The specific positions of the three column adjustment devices 2 on the lower part of the column to be assembled are as follows: Figure 5 As shown at positions I, II, and III, the supporting components are a lower support platform 21 and an upper connecting bracket 23. The upper connecting bracket 23 is welded to the column body of the arch to be installed, and the lower support platform 21 is welded and fixed to the already installed and adjusted column body or column base.

[0115] Step (4): After arranging all the three-way displacement jack mechanisms 22 and their supporting components of the column adjustment device 2, the column adjustment device 2 is calibrated and adjusted. The three-way displacement of the three-way displacement jack mechanism 22 in each group of column adjustment devices 2 is adjusted multiple times, so that the three-dimensional spatial posture of the column changes multiple times. During the calibration and adjustment test of the column adjustment device 2, the three-dimensional data acquisition instrument 31 of the three-dimensional acquisition and calculation device 3 is used to acquire the three-dimensional coordinates of each bolt hole coordinate marker fixed on the column, and the coordinates of each bolt hole are obtained. The three-dimensional spatial coordinates of the coordinate markers are transmitted to the calculation computer 32. The calculation computer 32 of the three-dimensional acquisition and calculation device 3 receives the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2, and uses the three-dimensional spatial coordinates of each bolt hole coordinate marker as the three-dimensional spatial coordinate data of the column. Based on the data obtained during the calibration and adjustment test of the column adjustment device 2, the correlation and influence relationship between the change of the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2 and the change of the three-dimensional spatial coordinate data of the column is calculated.

[0116] In this embodiment, a calibration and adjustment test is performed on the No. 1 three-dimensional displacement jack mechanism 22. The correlation matrix C between the change in unit three-dimensional displacement of the No. 1 three-dimensional displacement jack mechanism 22 and the three-dimensional displacement of the No. 1 measuring point is obtained. 11 The correlation matrix of the three-dimensional displacement of measuring point 2 is C. 12 The correlation matrix of the three-dimensional displacement of measuring point 3 is C. 13 ;

[0117] For the calibration and adjustment test performed on the No. 2 triaxial displacement jack mechanism 22, the correlation matrix C of the change in unit triaxial displacement of the No. 1 triaxial displacement jack mechanism 22 on the triaxial displacement of the No. 1 measuring point is obtained. 21 The correlation matrix of the three-dimensional displacement of measuring point 2 is C. 22 The correlation matrix of the three-dimensional displacement of measuring point 3 is C. 23 ;

[0118] For the calibration and adjustment test performed on the No. III three-dimensional displacement jack mechanism 22, the correlation matrix C of the influence of the change in unit three-dimensional displacement of the No. 1 three-dimensional displacement jack mechanism 22 on the three-dimensional displacement of the No. 1 measuring point is obtained. 31 The correlation matrix of the three-dimensional displacement of measuring point 2 is C. 32 The correlation matrix of the three-dimensional displacement of measuring point 3 is C. 33 ;

[0119] After calibration and adjustment tests, the correlation matrix of the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism 22 in each group of column adjustment devices 2 and the changes in the three-dimensional spatial coordinate data of the column is as follows:

[0120]

[0121]

[0122]

[0123] Step (5): By calculating the three-dimensional spatial coordinates, the target coordinate positions of the bolt hole coordinate markers on the column as measuring points when the column reaches the target installation position are obtained, and the results are input into the calculation computer 32 of the three-dimensional acquisition and calculation device 3 as the target installation position coordinate data of the column; then, the three-dimensional acquisition and calculation device 3 obtains the current three-dimensional spatial coordinates of the bolt hole coordinate markers on the column through the three-dimensional data acquisition instrument 31, and transmits them to the calculation computer 32 as the current three-dimensional spatial coordinate data of the column; the calculation computer 32 processes and calculates the displacement difference between the current three-dimensional spatial coordinate data of the column and the target installation position coordinates.

[0124] In this embodiment, the target coordinate position of the first measuring point is determined by three-dimensional spatial coordinate calculation as (x... l1 ,y l1 ,z l1 ) T =(52608,7.55,483) T The target coordinates of the second measuring point are (x... l2 ,y l2 ,z l2 ) T =(52608,7.55,490.6) T The target coordinates of the third measuring point are (x... l3 ,y l3 ,z l3 ) T =(52608,6.75,490.6) T Meanwhile, based on the data collected and calculated by the three-dimensional acquisition and measurement device 3, the current measured three-dimensional spatial coordinates of measurement point 1 are: The current measured three-dimensional spatial coordinates of measuring point 2 are: The current measured three-dimensional spatial coordinates of measuring point 3 are: Therefore, the displacement difference between the current three-dimensional spatial coordinates of measuring point 1 and its target coordinate position. The displacement difference between the current three-dimensional spatial coordinates of measuring point 2 and its target coordinate position The displacement difference between the current three-dimensional spatial coordinates of measuring point 3 and its target coordinate position

[0125] At this point, the displacement difference between the current three-dimensional spatial coordinates of all measuring points and their target coordinate positions is obtained:

[0126]

[0127] Substituting equations 8, 9, and 10 into equation 11, we get:

[0128]

[0129]

[0130]

[0131] Step (6): The computer 32 calculates the target adjustment amount of the three-dimensional displacement jack mechanism 22 in each set of column adjustment devices 2 by using the displacement difference between the current three-dimensional spatial coordinate data of the column body and the target installation position coordinates and the correlation influence relationship.

[0132] In this embodiment, substituting equations 12, 13, and 14 into equation 6 yields:

[0133]

[0134] From Equation 15 above, calculate the target adjustment amount of the three-way displacement jack mechanism 22 in each set of column adjustment devices 2 that satisfies Equation 15:

[0135]

[0136] Step (7): The target adjustment amounts of the longitudinal, transverse, and vertical displacements of each three-way displacement jack mechanism 22, calculated according to Formula 16, are determined. The target adjustment amounts of the three-way displacement jack mechanisms 22 in each group of column adjustment devices 2 are also determined. In this embodiment, after the target adjustment amounts of the three-way displacements of each three-way displacement jack mechanism 22 are in place, the measuring points of the three-dimensional posture of the column body on the arch to be installed are re-measured to determine whether the adjustment has indeed been completed. At this time, the three-dimensional spatial coordinates of measuring point 1 on the column body of the arch to be installed are re-measured. Remeasurement of three-dimensional spatial coordinates at measuring point No. 2 Remeasurement of three-dimensional spatial coordinates at measuring point No. 3 Therefore, it can be seen that the three-dimensional coordinates of each measuring point have reached the target coordinate position, indicating that the three-dimensional posture of the column body on the arch to be installed has been in place. At this time, the measurement and adjustment of the three-dimensional posture of the column body on the arch to be installed has been completed.

[0137] Step (8): Perform assembly and connection construction on the column body to be assembled. After the construction is completed, remove the column body coordinate marker 1 and the column body adjustment device 2.

[0138] In summary, the present invention has the following technical advantages:

[0139] 1. The three-dimensional attitude measurement and adjustment system for the column body of the arch on the large-span arch bridge provided by the present invention has fewer components, simple structure, low installation accuracy requirements, and is easy to assemble and construct on site. Therefore, it can be easily built and applied in the construction of adjusting the attitude of the column body of the arch on the bridge.

[0140] 2. With the help of the three-dimensional spatial posture measurement and adjustment system of the column body of the large-span arch bridge, the column body can be connected and adjusted in various directions for translation and rotation. This enables the column body to reach the target posture and position more quickly and accurately, improves the assembly and construction efficiency of the column body of the large-span arch bridge, and helps to save labor and safety management costs.

[0141] 3. The present invention utilizes the above-mentioned system's method for measuring and adjusting the three-dimensional spatial posture of the arch-supported column body of a large-span arch bridge, which enables the arch-supported column body to quickly and accurately reach the target posture, meeting the adjustment accuracy requirements of the bolted arch-supported column body; and clarifies the specific adjustment method steps, after completing the adjustment steps as required, the precise control of the three-dimensional posture of the arch-supported column body can be achieved.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A three-dimensional spatial attitude measurement and adjustment system for columns erected on the arch of a long-span arch bridge, characterized in that, It includes column coordinate markers, column adjustment devices, and three-dimensional acquisition and calculation devices; The column coordinate marker is used to be fixedly installed in the bolt holes on the column to be assembled, so as to mark the three-dimensional spatial coordinates of the column by fixing multiple bolt hole coordinate markers on the column. The column adjustment device includes a lower support platform, a three-way displacement jack mechanism, and an upper connecting bracket. The lower support platform is used to fix the column foot or column body already installed on the main arch rib of the long-span arch bridge, providing structural support for the upper connecting bracket. The upper connecting bracket is used to fix the lower part of the column body to be assembled, and the upper connecting bracket is installed above the lower support platform through the three-way displacement jack mechanism, so that the upper connecting bracket can undergo three-way displacement relative to the lower support platform in the horizontal, vertical, and longitudinal directions. The column adjustment device has multiple sets, which are used to fix the column body to different positions on the lower part of the column body to be assembled, and the three-way displacement data of the three-way displacement jack mechanism in each set of column adjustment devices is transmitted to the three-dimensional acquisition and calculation device. The three-dimensional acquisition and calculation device includes a three-dimensional data acquisition instrument and a calculation computer. The three-dimensional data acquisition instrument is a binocular camera or a three-dimensional laser scanner, used to acquire the three-dimensional coordinates of each bolt hole coordinate marker fixedly installed on the column, obtain the three-dimensional spatial coordinates of each bolt hole coordinate marker, and transmit them to the calculation computer. The calculation computer is used to receive the three-dimensional displacement data of the three-dimensional displacement jack mechanism in each group of column adjustment devices, and uses the three-dimensional spatial coordinates of each bolt hole coordinate marker as the three-dimensional spatial coordinate data of the column. It also calculates the correlation between the change of the three-dimensional displacement data of the three-dimensional displacement jack mechanism in each group of column adjustment devices and the change of the three-dimensional spatial coordinate data of the column. Then, based on the displacement difference between the three-dimensional spatial coordinate data of the column and the target installation position coordinates, it uses the correlation to calculate the target adjustment amount of the three-dimensional displacement of the three-dimensional displacement jack mechanism in each group of column adjustment devices. Specifically, regarding the correlation between the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in any nth group of column adjustment devices and the changes in the three-dimensional spatial coordinates of any mth bolt hole coordinate marker on the column, the calculation computer in the three-dimensional acquisition and calculation device calculates the relationship by solving the following equation: ； in, This represents the correlation matrix between the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in the nth column adjustment device and the changes in the three-dimensional spatial coordinates of the mth bolt hole coordinate marker on the column. , , These represent the horizontal longitudinal x-displacement adjustment, horizontal transverse y-displacement adjustment, and vertical z-displacement adjustment of the three-way displacement jack mechanism in the nth column adjustment device. , , These represent the three-way displacement jack mechanism in the nth group of column adjustment devices. , , The displacement adjustment affects the three-dimensional spatial coordinates of the m-th bolt hole coordinate marker on the column body, including the horizontal longitudinal x-change, horizontal transverse y-change, and vertical z-change. , N is the total number of sets of column adjustment devices, and M is the total number of bolt hole coordinate markers installed on the column. The computer in the 3D acquisition and calculation device calculates the target adjustment amount of the three-dimensional displacement jack mechanism in each group of column adjustment devices using the following formula: ； in, This represents the correlation matrix between the changes in the three-dimensional displacement data of the three-dimensional displacement jack mechanism in the nth column adjustment device and the changes in the three-dimensional spatial coordinates of the mth bolt hole coordinate marker on the column. This represents the displacement difference between the current three-dimensional spatial coordinate data of the m-th bolt hole coordinate marker on the column and its target coordinate position; , , These represent the target adjustment amounts of the horizontal longitudinal x-displacement, horizontal transverse y-displacement, and vertical z-displacement of the three-way displacement jack mechanism in the nth column adjustment device, respectively. , N represents the total number of sets of column adjustment devices, and M represents the total number of bolt hole coordinate markers installed on the column.

2. The three-dimensional attitude measurement and adjustment system for the column body of a long-span arch bridge as described in claim 1, characterized in that, There are at least three column coordinate markers, which are used to be fixedly installed in different non-collinear bolt holes in the bolt hole group of the column to be assembled; The column coordinate marking component includes a screw part that can be threaded into the bolt holes on the column. The tail end of the screw part has a nut part with a diameter larger than that of the screw part. The end face of the nut part is provided with a circular groove that is collinear with the screw axis. A mark is provided at the center of the bottom surface of the circular groove.

3. The three-dimensional attitude measurement and adjustment system for the column body of a long-span arch bridge as described in claim 1, characterized in that, The column adjustment device has at least three sets, which are used to fix and connect to different non-collinear positions on the lower part of the column to be assembled. Each set of column adjustment devices includes a three-way displacement jack mechanism comprising vertical jacks, horizontal jacks, and longitudinal jacks; among which, The base of the longitudinal jack is fixed on the lower support platform. The pushing end of the longitudinal jack is arranged horizontally and longitudinally and connected to the longitudinal sliding table on the lower support platform. The longitudinal sliding table can reciprocate along the horizontal longitudinal direction under the driving of the pushing end of the longitudinal jack. The base of the transverse jack is fixed on the longitudinal sliding platform. The pushing end of the transverse jack is arranged horizontally and connected to the transverse sliding platform on the longitudinal sliding platform. The transverse sliding platform can reciprocate along the horizontal direction under the action of the pushing end of the transverse jack. The base of the vertical jack is fixed on the horizontal sliding platform. The pushing end of the vertical jack is arranged vertically and connected to the upper connecting bracket, so that the upper connecting bracket can be raised and lowered in the vertical direction under the action of the pushing end of the vertical jack.

4. The three-dimensional attitude measurement and adjustment system for the column body of a long-span arch bridge as described in claim 3, characterized in that, In the three-way displacement jack mechanism, the vertical jack, the horizontal jack, and the longitudinal jack are all electric jacks; The three-dimensional displacement data of the three-dimensional displacement jack mechanism in each column adjustment device are transmitted to the calculation computer of the three-dimensional acquisition and calculation device through the electric control console of the electric jack via data communication. The three-dimensional displacement target adjustment amount of the three-dimensional displacement jack mechanism in each group of column adjustment devices, calculated by the calculation computer of the three-dimensional acquisition and calculation device, is also fed back to the electric control panel of the corresponding electric jack in each group of column adjustment devices through data communication, thereby controlling the three-dimensional displacement jack mechanism in each group of column adjustment devices to make adjustments.

5. A method for measuring and adjusting the three-dimensional spatial attitude of the columns erected on the arch of a long-span arch bridge, characterized in that... The implementation using the three-dimensional attitude measurement and adjustment system for the column body of the long-span arch bridge as described in claim 1 includes the following steps: S1. Select at least three non-collinear bolt holes as measuring points from the bolt hole group of the column to be assembled, and install column coordinate markers on them respectively, so as to mark the three-dimensional spatial coordinates of the column by fixing multiple bolt hole coordinate markers on the column. S2. Lift the column to be assembled to the position above the already installed column foot or column on the main arch rib of the large-span arch bridge. Select at least three non-collinear positions on the lower part of the column to be assembled and install column adjustment devices at each position. Each set of column adjustment devices includes a lower support platform, a three-way displacement jack mechanism, and an upper connecting bracket. The lower support platform is used to fix the column foot or column already installed on the main arch rib of the large-span arch bridge and to provide structural support for the upper connecting bracket. The upper connecting bracket is used to fix the lower part of the column to be assembled and is installed above the lower support platform through the three-way displacement jack mechanism, so that the upper connecting bracket can undergo three-way displacement relative to the lower support platform in the horizontal, vertical, and longitudinal directions. Each set of column adjustment devices transmits the three-way displacement data of its three-way displacement jack mechanism to the three-dimensional acquisition and calculation device. S3. The column adjustment device undergoes calibration and adjustment testing. The three-dimensional displacement of the three-way displacement jack mechanism in each group of column adjustment devices is adjusted multiple times, causing various changes in the three-dimensional spatial posture of the column. During the calibration and adjustment testing, the three-dimensional data acquisition instrument of the three-dimensional acquisition and calculation device acquires the three-dimensional coordinates of each bolt hole coordinate marker fixed on the column, obtaining the three-dimensional spatial coordinates of each bolt hole coordinate marker and transmitting them to the calculation computer. The calculation computer of the three-dimensional acquisition and calculation device receives the three-dimensional displacement data of the three-way displacement jack mechanism in each group of column adjustment devices and uses the three-dimensional spatial coordinates of each bolt hole coordinate marker as the three-dimensional spatial coordinate data of the column. Based on the data obtained during the calibration and adjustment testing of the column adjustment device, the correlation between the changes in the three-dimensional displacement data of the three-way displacement jack mechanism in each group of column adjustment devices and the changes in the three-dimensional spatial coordinate data of the column is calculated. S4. Through three-dimensional spatial coordinate calculation, the target coordinate positions of each bolt hole coordinate marker on the column are obtained when the column reaches the target installation position. The results are input to the calculation computer of the three-dimensional acquisition and calculation device as the target installation position coordinate data of the column. The three-dimensional acquisition and calculation device obtains the current three-dimensional spatial coordinates of each bolt hole coordinate marker on the column through a three-dimensional data acquisition instrument and transmits them to the calculation computer as the current three-dimensional spatial coordinate data of the column. Based on the displacement difference between the current three-dimensional spatial coordinate data of the column and the target installation position coordinates, the calculation computer uses the aforementioned correlation and influence relationship to calculate the target adjustment amount of the three-dimensional displacement jack mechanism in each group of column adjustment devices. S5. According to the calculated target adjustment amount of the three-way displacement jack mechanism in each group of column adjustment devices, adjust the three-way displacement of the three-way displacement jack mechanism in each group of column adjustment devices, so that the column is adjusted to the target installation position. S6. Perform assembly and connection construction on the column body to be assembled. After the construction is completed, remove the column body coordinate markers and column body adjustment devices.

6. The method for measuring and adjusting the three-dimensional spatial posture of the column body on the arch of a long-span arch bridge according to claim 5, characterized in that, In step S5, after adjusting the three-dimensional displacement of the three-dimensional displacement jack mechanism in each group of column adjustment devices, the method further includes: re-measuring the three-dimensional spatial coordinates of each bolt hole coordinate marker on the column to confirm whether each bolt hole coordinate marker has reached the target coordinate position; if it has not yet reached the target position, return to step S4 to continue the calculation; if it has reached the target position, it indicates that the column has been adjusted to the target installation position, and step S6 is executed.

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