A vertical adjustment device and method for arch bridge tower

Abstract

The present invention belongs to the technical field of verticality measurement and adjustment of arch bridge towers, and specifically relates to a verticality adjustment device and method for an arch bridge tower, comprising a buckle tower installed on a foundation and an angle adjustment component arranged at the bottom of the buckle tower, the angle adjustment component comprising a movable base and a casing, the bottom ends of tower columns are fixed on the surface of the movable base, a fixing rod is connected between the inner wall of the casing and the tower column, the angle adjustment component comprises a first telescopic cylinder, and a distance measuring device similar to a gyroscope is detachably connected to the vertical center of the tower column. By adjusting the angle of each movable block in the vertical plane, a distance sensor can be used to measure the distance between the movable block and the tower column in different orientations in real time to ensure the verticality requirement of the tower, and the problem that the buckle tower cannot be timely controlled and adjusted in its verticality during the construction process, resulting in elastic deformation and stress concentration at some connection positions in the buckle tower after the subsequent buckle cable is installed, which ultimately affects the overall quality of the buckle tower.

Description

Technical Field

[0001] The invention belongs to the technical field of verticality measurement and adjustment of an arch bridge tower, and in particular relates to a verticality adjustment device and method for an arch bridge tower. Background Art

[0002] During the construction of large-span steel truss arch bridges, it is usually necessary to use pylons to support and fix temporary structures in the bridge system. At the same time, pylons are also the most difficult and risky key link in the bridge construction process. The entire erection process must be strictly calculated, analyzed and precisely controlled to ensure the quality of the steel truss arch bridge. When installing pylons, the error condition of their verticality is an important part of evaluating the internal force condition and safety of the bridge structure, and is a necessary condition for ensuring the linear shape of the bridge arch ring and the overall structural stability. Therefore, the pylon erection process must be strictly calculated and analyzed to ensure that the verticality of the pylon is always within the error range.

[0003] For example, a Chinese patent discloses a system and method for adjusting the verticality of a steel truss arch bridge buckle tower (patent publication number: CN117523132A). The data obtained by scanning the buckle tower of a steel truss arch bridge with a three-dimensional laser scanner is used to analyze the shape and geometric parameters of the buckle tower of the steel truss bridge, and the evaluation results are analyzed and visualized to evaluate its verticality. Although this technical solution can realize the verticality detection and adjustment of the buckle tower, the three-dimensional laser scanner is affected by the environment when collecting data, and accurate data can only be collected in an ideal environment. In addition, when the verticality of the buckle tower is adjusted by jacks and buckle cables and other equipment, the buckle tower will produce a small range of elastic deformation driven by the buckle cables. When the height of the buckle tower is continuously increased, the cumulative error caused by the error formed by the connection between the standard segments of the buckle tower and environmental changes, construction personnel and other factors will continue to amplify. Only by using buckle cables to control the verticality of the buckle tower will increase the elastic deformation of some standard segments in the buckle tower, causing stress concentration at some connection positions, resulting in the overall quality and service life of the buckle tower being affected. In severe cases, cracks will be formed, affecting the quality of the buckle tower and the bridge. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a verticality adjustment device and method for an arch bridge tower, so as to solve the problem that the verticality of the existing buckle tower cannot be timely controlled and adjusted during the construction process, resulting in elastic deformation and stress concentration at some connection positions in the buckle tower after the subsequent installation of the buckle cable, ultimately affecting the overall quality of the buckle tower.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] 1. The vertical adjustment device of an arch bridge tower and a method thereof, comprising a buckle tower installed on a foundation and an angle adjustment assembly arranged at the bottom of the buckle tower, the buckle tower comprising two tower columns and a plurality of inter-column cross-links connected between the two tower columns, the angle adjustment assembly having two parts, which are respectively arranged at the bottom ends of the two tower columns, the angle adjustment assembly comprising a movable base and a casing vertically fixed to the upper surface of the movable base, the movable base being vertically arranged in the foundation, and the movable base and the foundation being spaced and movably arranged, the bottom end of each of the tower columns being fixed to the corresponding surface of the movable base, the casing being arranged around the corresponding tower column, and a plurality of fixing rods being connected between the inner wall of the casing and the tower column, the angle adjustment assembly further comprising a plurality of first telescopic cylinders hinged on the outer surface of the casing, and the plurality of first telescopic cylinders being circumferentially spaced on the outer surface of the casing and jointly adjusting the angle of the tower column, wherein each of the first telescopic cylinders is tilted in a vertical plane, and the bottom of the first telescopic cylinder is tilted toward the foundation surface and hinged thereto;

[0007] A distance measuring device is detachably connected to the vertical center of each tower column, and the distance measuring device includes an automatic leveling mechanism and a support shell movably arranged on the automatic leveling mechanism, and the vertical center line of the support shell is always kept vertically downward under the action of the automatic leveling mechanism, and movable blocks are evenly spaced around the support shell, each of the movable blocks is rotatably connected to the support shell, and each movable block rotates a certain angle in its vertical plane, and a distance sensor is provided at the end of each movable block away from the support shell, and the distance between the movable block and the tower column is measured in the vertical plane.

[0008] Furthermore, each of the tower columns includes a plurality of tower column standard sections and a plurality of tower column adjustable sections arranged between adjacent tower column standard sections. Lifting blocks are respectively provided at the connection between the adjustable tower column and the tower column standard sections. Each of the lifting blocks is vertically movably arranged on the upper end surface of the adjustable tower column. The distance measuring equipment is detachably connected to the tower column standard sections and the tower column adjustable section.

[0009] Furthermore, the outer surface of each casing is provided with a movable ring, and the movable ring is slidably arranged on the outer surface of the casing along the axial direction of the casing. The outer surface of the casing is connected to a plurality of vertical second telescopic cylinders, and the telescopic ends of the plurality of second telescopic cylinders are connected to the movable ring. The outer surface of the movable ring is connected to two steel cables, and the two steel cables are symmetrically arranged about the vertical axis of the casing, and the ends of the two steel cables away from the movable ring are connected to fixing parts, and the two fixing parts are fixed on the corresponding tower column standard sections and are symmetrically arranged about the tower column standard sections.

[0010] Furthermore, the outer surface of the automatic leveling mechanism is rotatably connected to two horizontally arranged telescopic rods, the two telescopic rods are symmetrically arranged with respect to the automatic leveling mechanism, and the free ends of the two telescopic rods are detachably connected to corresponding fixing members.

[0011] Furthermore, a vertically downward optical signal transmitter is provided at the bottom end of the supporting shell, an optical signal receiver is provided on the upper surface of the movable base, and the center of the optical signal receiver is on the same vertical line as the center of the first tower column standard section installed on the movable base, and the plurality of the first telescopic cylinders and the optical signal transmitter are electrically connected to a controller.

[0012] Furthermore, a portion of the surface of the automatic leveling mechanism close to the optical signal transmitter is hollowed out.

[0013] Furthermore, when one end of the inter-column cross-connection is connected to the tower column, the inter-column cross-connection is also fixedly connected to the standard section of the tower column and the adjustable tower column by bolts.

[0014] Furthermore, a verticality adjustment method for an arch bridge tower is applied in the verticality adjustment device for an arch bridge tower, and the implementation steps are as follows:

[0015] S1. Determine the installation position of the tower, and make the foundation and the movable base in sequence based on this position. After the maintenance of the movable base is completed, the tower can be installed;

[0016] S2. A casing and an optical signal receiver are installed on the upper surface of the movable base, the center of the optical signal receiver is on the same vertical line as the vertical axis of the casing, and a plurality of first telescopic cylinders are installed on the outer surface of the casing, the other ends of the first telescopic cylinders are fixedly connected to the foundation surface through a connecting piece, and then, the vertical axis of the casing is made perpendicular to the horizontal plane by controlling the telescopic amounts of the plurality of first telescopic cylinders;

[0017] S3, start to install the tower column standard section on the upper surface of the movable base in sequence, starting from the installation of the second tower column standard section, each time a tower column standard section is installed, a distance measuring device is connected to its surface to detect the verticality of this tower column standard section, and two steel cables are connected to this tower column standard section at the same time, the second telescopic cylinder is controlled to drive the movable ring to move downward and the tower column is adjusted to pre-press through the steel cables. If the verticality of the tower column standard section is within the specified error range, continue to install the tower column standard section upward. If it exceeds the specified error of the verticality, re-lift the tower column standard section through the tower crane, and add gaskets to reduce the error when re-installing until it meets the specified verticality error, and then continue to build the tower column standard section upward;

[0018] S4. When a certain number of tower column standard sections are built and accumulated, an adjustable tower column is built on the top, and its verticality is adjusted. The height of each lifting block is adjusted according to the data fed back by the distance measuring device, so that the vertical center of the tower column standard section built on the adjustable tower column is vertically downward and coincides with the center of the optical signal receiver, which greatly reduces the verticality error accumulated after the previous construction of multiple tower column standard sections;

[0019] S5. Continue to build tower column standard sections on the adjustable upper surface of the tower column, and control the verticality of each tower column standard section through the distance measuring equipment. When the number of tower columns built accumulates to a certain level, build an adjustable tower column at the top, and repeat the operations in steps S3 and S4 above until the overall construction of the tower is completed.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention sets a movable base in the foundation, and can adjust the overall inclination of the tower column at any time through the angle adjustment component, timely adjust the angle of the tower column, and cooperate with the adjustable tower column to further improve the verticality adjustment of the tower column during construction, eliminate the connection error between the standard sections of the tower column, reduce the influence of the force concentration at some connection positions, further ensure the verticality requirement of the tower column during construction, and can measure the verticality requirement of each standard section of the tower column during installation in real time through the distance measuring device during construction, thereby reducing the verticality error of each tower column during construction;

[0022] 2. When building the tower column, the standard section of the tower column or the adjustable section of the tower column being built is pre-tightened through the cooperation of the second telescopic cylinder and the steel cable to simulate the condition under pressure, eliminate the elastic deformation between the connection parts and improve the overall strength, further ensure the accuracy of the distance measurement equipment during operation, and improve the connection accuracy of each standard section of the tower column and the adjustable section of the tower column during the construction of the tower column, thereby effectively improving the verticality of the tower column construction.

[0023] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0025] Figure 1 This is an overall schematic diagram of the buckle tower of the present invention;

[0026] Figure 2 It is a side view of the buckle tower of the present invention;

[0027] Figure 3 for Figure 1 The enlarged schematic diagram at A in the middle;

[0028] Figure 4 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0029] Figure 5 for Figure 1 The enlarged schematic diagram at C in the middle;

[0030] Figure 6 for Figure 2 The enlarged schematic diagram at D in the middle;

[0031] Figure 7 It is a schematic diagram of the movable base and foundation of the present invention;

[0032] Figure 8 This is a schematic diagram of the standard section of the tower column and the adjustable tower column of the present invention;

[0033] Fig. 9 This is a schematic diagram of the distance measurement device structure of the present invention;

[0034] Fig.10 The automatic leveling mechanism structure of the present invention is shown in FIG. Figure 1 ;

[0035] Fig.11 The automatic leveling mechanism structure of the present invention is shown in FIG. Figure 2 ;

[0036] Fig.12 This is a schematic diagram of the automatic leveling mechanism structure after the supporting shell is removed according to the present invention.

[0037] The following are marked in the accompanying drawings:

[0038] 1 foundation, 2 tower buckle, 201 tower column, 2011 tower column standard section, 2012 adjustable tower column, 202 cross-link between columns, 3 angle adjustment assembly, 301 movable base, 302 casing, 303 first telescopic cylinder, 4 reaction block, 5 lifting block, 6 movable ring, 7 second telescopic cylinder, 8 movable bolt, 9 steel cable, 10 fixing part, 11 distance measuring device, 1101 first ring, 1102 second ring, 1103 support shell, 1104 movable block, 1105 third ring, 12 telescopic rod. DETAILED DESCRIPTION

[0039] like Figures 1 to 12 As shown,

[0040] A vertical adjustment device for an arch bridge tower, comprising a buckle tower 2 installed on a foundation 1 and an angle adjustment assembly 3 arranged at the bottom of the buckle tower 2, wherein the buckle tower 2 comprises two tower columns 201 and a plurality of inter-column cross-links 202 connected between the two tower columns 201, wherein the angle adjustment assembly 3 comprises two parts, which are respectively arranged at the bottom ends of the two tower columns 201, wherein the angle adjustment assembly 3 comprises a movable base 301 and a casing 302 vertically fixed to the upper surface of the movable base 301, wherein a deep pit for placing the movable base 301 is opened in the foundation 1, wherein the movable base 301 is vertically arranged in the deep pit opened in the foundation 1, and the peripheral side surface of the movable base 301 is spaced apart from the deep pit and is movably arranged, and wherein the movable base 301 is combined with the outer surface of the movable base 301 to adjust the vertical adjustment device. Figure 7 As shown, the movable base 301 can deflect α° in the deep pit, the bottom end of each tower column 201 is fixed to the corresponding surface of the movable base 301 by bolts, the casing 302 is arranged around the corresponding tower column 201, and a plurality of fixing rods (not shown in the figure) are fixedly connected between the inner wall of the casing 302 and the tower column 201 by bolts, and the angle adjustment component 3 also includes four first telescopic cylinders 303 hinged on the outer surface of the casing 302, and the four first telescopic cylinders 303 are evenly spaced circumferentially arranged on the outer surface of the casing 302 and jointly adjust the angle of the tower column 201, wherein each of the first telescopic cylinders 303 is tilted in the vertical plane, and the bottom of the first telescopic cylinder 303 is tilted toward the surface of the foundation 1, and the surface of the foundation 1 is provided with a plurality of reaction blocks 4 corresponding to the positions of the first telescopic cylinders 303, and the bottom end of each of the first telescopic cylinders 303 is connected to the reaction block 4 by a ball joint;

[0041] Each of the tower columns 201 includes a plurality of tower column standard sections 2011 and a plurality of tower column adjustable sections 2012 arranged between adjacent tower column standard sections 2011, and lifting blocks 5 are respectively arranged at the connection between the tower column adjustable sections 2012 and the tower column standard sections 2011, wherein each tower column adjustable section 2012 is welded by four circumferentially uniform and vertical main steel pipes and four transverse steel pipes, and the upper ends of the four main steel pipes are penetrated by the lifting blocks 5, and each lifting block 5 is threadedly connected to the main steel pipe, and a flange is welded on the upper end of the lifting block 5, and is fixedly connected to the tower column standard section 2011 through the cooperation of the flange and bolts and nuts;

[0042] A distance measuring device 11 is detachably connected to the vertical center line of the tower column 201, and the distance measuring device 11 includes an automatic leveling mechanism and a support shell 1103 movably arranged on the automatic leveling mechanism, and the vertical center line of the support shell 1103 is always kept vertically downward under the action of the automatic leveling mechanism, wherein the automatic leveling mechanism in this scheme is composed of three concentrically arranged third rings 1105, a first ring 1101 and a second ring 1102 with decreasing diameters in sequence (refer to Figures 9 to 12), the third circular ring 1105 is horizontally arranged, and the outer ring surface of the third circular ring 1105 is rotatably connected to the tower column 201, the first circular ring 1101 is vertically arranged, and the outer ring surface of the first circular ring 1101 is welded with two rotating shafts symmetrically arranged about it, and the two rotating shafts are rotatably connected to the inner ring surface of the third circular ring 1105, and the two rotation center lines of the third circular ring 1105 and the first circular ring 1101 are perpendicular to each other, the second circular ring 1102 is also vertically arranged, and the outer ring surface of the second circular ring 1102 is also welded with two rotating shafts symmetrically arranged about it, and the second circular ring 1102 is rotatably connected to the first circular ring 1101 through the rotating shaft, and the two rotation center lines of the first circular ring 1101 and the second circular ring 1102 are perpendicular to each other, and the inner ring of the second circular ring 1102 is rotatably connected to the supporting shell 1103, and the peripheral side surface of the supporting shell 1103 is also welded with two rotating shafts and connected to the inner ring surface of the second circular ring 1103. Rotationally connected, the two rotation center lines of the support shell 1103 and the second ring 1102 are also perpendicular to each other. The support shell 1103 is in the shape of a semi-spherical sphere. Due to its own gravity, the support shell 1103 will always remain in a horizontal state under the action of the automatic leveling mechanism, and the vertical center line of the support shell 1103 is vertically downward (its specific implementation principle is similar to the self-leveling of taro in incense balls). Four movable blocks 1104 are evenly spaced around the support shell 1103, each of the movable blocks 1104 is rotationally connected to the support shell 1103, and each movable block 1104 rotates a certain angle in its vertical plane, and each of the movable blocks 1104 is provided with a distance sensor at one end away from the support shell 1103, and the detection end of each distance sensor is facing the corresponding four main steel pipes. The surface of the support shell 1103 is provided with a display for displaying the detection data of the distance sensor;

[0043] As shown in the figure, after the foundation 1 and the movable base 301 are poured and cured (at this time, the movable base 301 is fixed at the current position by a pad, and the specific construction process of the movable base 301 refers to the content of the subsequent adjustment method), first, a tower column standard section 2011 is fixed on the upper surface of the movable base 301 by bolts, and then the casing 302 is hoisted to the upper surface of the movable base 301 and fixedly connected with it by bolts. The outer ring surface of the casing 302 is hinged with four first telescopic cylinders 303. At this time, the angles of the casing 302, the movable base 301 and the tower column 201 on the horizontal plane can be adjusted by controlling the four first telescopic cylinders 303 on the outer surface of the casing 302;

[0044] The distance measuring device 11 is installed at the center of the tower column standard section 2011 to detect its verticality. After the installation is completed, the angle of each movable block 1104 is adjusted. Figure 8As shown, the angle adjustment range of the movable block 1104 is β°, so that the detection end of each distance sensor faces the main steel pipe of the tower column standard section 2011, and detects the distance between the movable block 1104 and the four main steel pipes, and displays the data fed back by each distance sensor on the display. When the data displayed by each distance sensor fluctuates up and down within the error range of the same value, it means that it has been adjusted to the center position of the tower column standard section 2011. At this time, the angle of each movable block 1104 is adjusted again and aligned with each main steel pipe of the next tower column standard section 2011 to be installed, so that the verticality of the next tower column standard section 2011 during installation can be monitored in real time (the data fed back by each distance sensor is similar within a certain error range, which can indicate the verticality of the next tower column standard section), thereby improving the precise control of the verticality of the tower column standard section 2011 during installation and reducing installation errors.

[0045] If the verticality of the subsequently constructed tower column standard section 2011 exceeds the error range, a small range correction can be made by adding gaskets to make it return to the normal verticality error range. After the adjustment, the tower column standard section 2011 can be continued to be constructed. When the number of constructed tower column standard sections 2011 is accumulated to a certain level, the tower column adjustable section 2012 is fixedly installed on the upper surface of the top tower column standard section 2011 by means of flanges and the cooperation of bolts and nuts. When the tower column adjustable section 2012 is installed, the cumulative errors formed by the previously installed multiple tower column standard sections 2011 (such as the errors caused by the cooperation of bolts and nuts, the errors caused by flanges between tower column standard sections 2011, etc., can be eliminated by adjusting the height of each lifting block 5, and the cumulative errors are returned to zero, thereby ensuring that the centers of the subsequent tower column standard sections 2011 and the previously constructed multiple tower column standard sections 2011 are on the same vertical line; when the upper surface of each lifting block 5 is at After they are on the same horizontal plane, multiple tower column standard sections 2011 can be continuously built on top thereof, and the distance measuring device 11 can be continuously disassembled and assembled until the overall construction of the buckled tower 2 is completed; by setting up the movable base 301 and multiple first telescopic cylinders 303, after a certain number of tower column standard sections 2011 are built, the verticality of the multiple tower column standard sections 2011 as a whole can be timely adjusted to ensure that the verticality is within the error range, and by setting up the tower column adjustable 2012 between adjacent tower column standard sections 2011, the accumulated error formed by the connection of multiple tower column standard sections 2011 can be timely eliminated, the problem of stress concentration can be reduced, and the verticality of the subsequently built tower column standard sections 2011 can be ensured, thereby ensuring the accuracy of the subsequent construction and the quality of the buckled tower 2; the distance measuring device 11 can always accurately understand the verticality error during construction and make real-time adjustments, further reducing the error accumulation during construction and improving the overall construction quality.

[0046] In this embodiment, the outer surface of each casing 302 is sleeved with a movable ring 6, and the movable ring 6 is slidably arranged on the outer surface of the casing 302 along the axial direction. The outer surface of the casing 302 is connected to a plurality of vertical second telescopic cylinders 7 (only two are shown in the figure), and the telescopic ends of the plurality of second telescopic cylinders 7 are hinged to the lower end surface of the movable ring 6, and the outer surface of the movable ring 6 is connected to two movable bolts 8, and the two movable bolts 8 are symmetrically arranged about the vertical axis of the casing 302, and the upper end of each movable bolt 8 is fixedly connected to a steel cable 9, and the free ends of the two steel cables 9 are connected to the corresponding tower column standard section 2011, wherein the tower column standard section 2011 is fixedly connected to a connecting tube and a connecting ear welded and fixed on its surface by bolts and nuts (the connecting tube and the connecting ear together constitute a fixing member 10), and the connecting ear and the corresponding movable bolt 8 are in the same vertical plane, and one end of the steel cable 9 is fixedly connected to the tower column standard section 2011 through the connecting ear.

[0047] As shown in the combined figure, when a tower column standard section 2011 is built, one end of the two steel cables 9 is fixedly connected to the tower column standard section 2011 (the steel cables 9 cooperate with the connecting ears), and the other end of the steel cables 9 is connected to the corresponding movable bolts 8 on the movable ring 6. After the steel cables 9 are connected, their tension is adjusted so that the two steel cables 9 on each movable ring 6 are in a taut state, and then the second telescopic cylinder 7 is controlled to drive the movable ring 6 to move vertically downward. While the movable ring 6 moves downward, it will continue to apply tension to the taut steel cables 9, and the other ends of the two steel cables 9 will continue to apply vertical downward pressure to the connected tower column standard section 2011, which can It can simulate the downward pressure exerted by subsequent tower column standard sections 2011 on this tower column standard section 2011 (the sum of the accumulated weights of subsequent multiple tower column standard sections 2011), can pre-press the already built tower column standard sections 2011 in advance, can improve the connection tightness between each tower column standard section 2011, eliminate in advance some errors caused by assembly tolerance, material deformation and other factors between adjacent tower column standard sections 2011, reduce the total accumulated error after the subsequent tower column standard sections 2011 are connected, reduce the risk of local stress concentration, and further ensure the verticality of each tower column standard section 2011 during installation, and improve the quality of the tower column 201 after it is finally built;

[0048] Among them, since the movable ring 6 continues to apply the same tension to the two steel cables 9 in a taut state, even if the two steel cables 9 are not vertically downward, the tension applied by the two steel cables 9 to the tower column standard section 2011 will also be vertically downward, and the tension applied by the two steel cables 9 is the same, ensuring that the force direction of the tower column standard section 2011 connected thereto is vertically downward.

[0049] Since the outer surface of the support shell 1103 is movable with an automatic leveling mechanism, even if the verticality of the tower column standard section 2011 connected to it is not vertically downward, the weight of the support shell 1103 plus the movable block 1104 and the distance sensor can make the vertical center line of the support shell 1103 always plumb downward. Therefore, after the distance measuring device 11 is installed, the position of its vertical center line is not affected by the external environment, and it can be used as a reference to accurately measure the verticality of the tower column standard section 2011.

[0050] In this embodiment, the outer surface of the third ring 1105 is rotatably connected to two horizontally arranged telescopic rods 12, the two telescopic rods 12 are symmetrically arranged about the vertical axis of the third ring 1105, and the free ends of the two telescopic rods 12 are detachably connected to the corresponding fixing members 10.

[0051] As shown in the figure, the telescopic rod 12 can adopt the cooperation of the threaded sleeve and the threaded rod to achieve the adjustment of the length. The telescopic rod 12 can quickly adjust the position of the distance measuring device 11 so that it is located at the center of the tower standard section 2011. Of course, it can also be detected by four distance sensors to confirm whether the support shell 1103 is located at the center of the tower standard section 2011. The position of the fixing part 10 can also be adjusted at the same time so that it is located on the horizontal axis of the tower standard section 2011 to ensure that the tension of the steel cable 9 is evenly transmitted to the tower standard section 2011.

[0052] As shown in the figure, after the two steel cables 9 are pulled downward through the movable ring 6 to tighten the completed tower column standard section 2011 and pre-tighten it, the distance measuring device 11 is installed between the two fixing parts 10.

[0053] In this embodiment, a vertically downward optical signal transmitter (a laser transmitter, an infrared transmitter, etc.) is provided at the bottom end of the support shell 1103, an optical signal receiver (a grating sensor, etc.) is provided on the upper surface of the movable base 301, and the center of the optical signal receiver is on the same vertical line as the center of the first tower column standard section 2011 installed on the movable base 301, and a plurality of the first telescopic cylinders 303 and the optical signal transmitter are electrically connected to a controller (a computer or other intelligent control device) in common; the surfaces of the first ring 1101 and the second ring 1102 close to the optical signal transmitter are hollowed out, and a sleeve is provided at the hollowed-out portion for the light emitted by the optical signal transmitter to pass through (combined with Fig.11 and Fig.12 As shown), the first ring 1101 and the second ring 1102 are rotatably connected via a rotating shaft and a connecting sleeve.

[0054] As shown in the figure, when the distance measuring device 11 is installed on the tower column standard section 2011 that has been built, the output end of the optical signal transmitter is vertically downward, and the light emitted by it will coincide with the center of the optical signal receiver under ideal conditions (within the error range). At this time, it means that the verticality of each tower column standard section 2011 meets the requirements. When the light does not coincide with the center of the optical signal receiver (outside the error range), the controller sends an electrical signal and controls the corresponding first telescopic cylinder 303 to correct the already built tower column standard section 2011 until the light coincides with the center of the optical signal receiver (within the error range). The tower column standard section 2011 in the construction process can be corrected in real time, reducing the cumulative error during subsequent construction, and ensuring the verticality requirements of each tower column standard section 2011; and the first ring 1101 and the second ring 1102 are partially hollowed out to prevent their surfaces from blocking the propagation of optical signals.

[0055] In this embodiment, when one end of the inter-column cross-link 202 is connected to the tower column 201, the inter-column cross-link 202 is simultaneously fixedly connected to the tower column standard section 2011 and the tower column adjustable section 2012 by bolts, further strengthening the connection between the tower column adjustable section 2012 and the tower column standard section 2011, and strengthening the connection between the two tower columns 201, thereby ensuring verticality and improving stability.

[0056] The invention also includes a verticality adjustment method for an arch bridge tower, which is applied in the verticality adjustment device for an arch bridge tower, and the implementation steps are as follows:

[0057] S1. Determine the installation position of the buckle tower 2, and make the foundation 1 and the movable base 301 in sequence based on this position. After the maintenance of the movable base 301 is completed, the buckle tower 2 can be installed; wherein, during the construction of the movable base 301, a vertical deep pit is first opened on the foundation 1, and a steel casing 302 is placed in the deep pit, and the bottom end of the steel casing 302 is conical, and a gap is left between the steel casing 302 and the inner wall of the deep pit. The top of the steel casing 302 is separated from the upper surface of the base by a pad, and then a steel cage is placed in the steel casing 302 and concrete is poured. After the maintenance is completed, the pad is removed, and the movable base 301 can be driven to move in a small range by four first telescopic cylinders 303;

[0058] S2. A casing 302 and an optical signal receiver are installed on the upper surface of the movable base 301. The center of the optical signal receiver is on the same vertical line as the vertical axis of the casing 302. Four first telescopic cylinders 303 are installed on the outer surface of the casing 302. The other ends of the first telescopic cylinders 303 are fixedly connected to the surface of the foundation 1 by bolts and nuts. Subsequently, the telescopic amounts of the four first telescopic cylinders 303 are controlled by a controller so that the vertical axis of the casing 302 is perpendicular to the horizontal plane.

[0059] S3, start to install the tower column standard section 2011 on the upper surface of the movable base 301 in sequence, starting from the installation of the second tower column standard section 2011, each time a tower column standard section 2011 is installed, a distance measuring device 11 is connected to its surface to detect the verticality of this tower column standard section 2011, and two steel cables 9 are connected to this tower column standard section 2011 at the same time, the second telescopic cylinder 7 is controlled to drive the movable ring 6 to move downward and pre-press the tower column adjustable 2012 through the steel cable 9, if the verticality of the tower column standard section 2011 is within the specified error range, continue to install the tower column standard section 2011 upward, if it exceeds the specified error of the verticality, re-lift this tower column standard section 2011 through the tower crane, and add a gasket to reduce the error when re-installing until it meets the specified verticality error, and then continue to build the tower column standard section 2011 upward;

[0060] S4. When a certain number of tower column standard sections 2011 are built and accumulated (depending on the overall height of the buckle tower 2, the number is not limited), build an adjustable tower column 2012 at the top and adjust its verticality. The height of each lifting block 5 is adjusted by the data fed back by the distance measuring device 11, so that the vertical center of the tower column standard section 2011 built on the adjustable tower column 2012 is vertically downward and coincides with the center of the optical signal receiver, which greatly eliminates the verticality error accumulated by multiple tower column standard sections 2011 after the previous construction is completed, and controls the error to be infinitely close to zero, so that the tower column standard section 2011 built subsequently can better control its verticality error;

[0061] S5. Continue to build the tower column standard section 2011 on the upper surface of the adjustable tower column 2012, and control the verticality of each tower column standard section 2011 through the distance measuring device 11. When the number of tower columns built accumulates to a certain level, build the adjustable tower column 2012 at the top, and repeat the operations in steps S3 and S4 above until the overall construction of the tower 2 is completed.

[0062] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A verticality adjustment device for an arch bridge tower, comprising a buckle tower (2) installed on a foundation (1) and an angle adjustment assembly (3) arranged at the bottom of the buckle tower (2), wherein the buckle tower (2) comprises two tower columns (201) and a plurality of inter-column cross-connections (202) connected between the two tower columns (201), characterized in that: The angle adjustment assembly (3) is provided with two parts, which are respectively arranged at the bottom ends of the two tower columns (201). The angle adjustment assembly (3) comprises a movable base (301) and a casing (302) vertically fixed to the upper surface of the movable base (301). The movable base (301) is vertically arranged in the foundation (1), and the movable base (301) and the foundation (1) are spaced and movably arranged. The bottom end of each tower column (201) is fixed to the surface of the corresponding movable base (301). The casing (302) is arranged around the corresponding tower column (201), and the angle adjustment assembly (3) also includes a plurality of first telescopic cylinders (303) hinged on the outer surface of the casing (302), and the plurality of first telescopic cylinders (303) are arranged circumferentially at intervals on the outer surface of the casing (302) and jointly adjust the angle of the tower column (201), wherein each of the first telescopic cylinders (303) is tilted in a vertical plane, and the bottom of the first telescopic cylinder (303) is tilted toward the surface of the foundation (1) and is hinged thereto; A distance measuring device (11) is detachably connected to the vertical center of each tower column (201), the distance measuring device (11) comprising an automatic leveling mechanism and a support shell (1103) movably arranged on the automatic leveling mechanism, and the vertical center line of the support shell (1103) is always kept vertically downward under the action of the automatic leveling mechanism, movable blocks (1104) are evenly spaced around the support shell (1103), each movable block (1104) is rotatably connected to the support shell (1103), and each movable block (1104) rotates a certain angle within its vertical plane, and a distance sensor is provided at one end of each movable block (1104) away from the support shell (1103), and The distance between the movable block (1104) and the tower column (201) is measured in a vertical plane; wherein the automatic leveling mechanism is composed of three concentrically arranged third circular rings (1105), a first circular ring (1101) and a second circular ring (1102) with decreasing diameters in sequence; the third circular ring (1105) is arranged horizontally, and the outer surface of the third circular ring (1105) is rotatably connected to the tower column (201); the first circular ring (1101) is arranged vertically, and the outer surface of the first circular ring (1101) is welded with two rotating shafts symmetrically arranged thereabout, and the two rotating shafts are rotatably connected to the inner surface of the third circular ring (1105); the two rotation center lines of the third circular ring (1105) and the first circular ring (1101) are perpendicular to each other; The ring (1102) is also arranged vertically, and the outer ring surface of the second ring (1102) is also welded with two rotating shafts symmetrically arranged thereabout, and the second ring (1102) is rotatably connected to the first ring (1101) via the rotating shaft, and the two rotating center lines of the first ring (1101) and the second ring (1102) are perpendicular to each other, and the inner ring of the second ring (1102) is rotatably connected to a supporting shell (1103), and the circumferential side surface of the supporting shell (1103) is also welded with two rotating shafts and rotatably connected to the inner ring surface of the second ring (1102), and the two rotating center lines of the supporting shell (1103) and the second ring (1102) are also perpendicular to each other, and the supporting shell (1103) is in the shape of a semi-spherical sphere. Due to gravity, the support shell (1103) will always maintain a horizontal state under the action of the automatic leveling mechanism, and the vertical center line of the support shell (1103) is vertically downward. Four movable blocks (1104) are evenly spaced around the support shell (1103), each of the movable blocks (1104) is rotatably connected to the support shell (1103), and each movable block (1104) rotates a certain angle in its vertical plane. A distance sensor is provided at one end of each movable block (1104) away from the support shell (1103), and the detection end of each distance sensor is facing the corresponding side of the four main steel pipes. A display for displaying the detection data of the distance sensor is provided on the surface of the support shell (1103); Each of the tower columns (201) comprises a plurality of tower column standard sections (2011) and a plurality of tower column adjustable sections (2012) arranged between adjacent tower column standard sections (2011); a lifting block (5) is respectively arranged at the connection between the tower column adjustable section (2012) and the tower column standard section (2011); each of the lifting blocks (5) is vertically movably arranged on the upper end surface of the tower column adjustable section (2012); and the distance measuring device (11) is detachably connected to the tower column standard section (2011) and the tower column adjustable section (2012); The outer surface of each casing (302) is sleeved with a movable ring (6), and the movable ring (6) is slidably arranged on the outer surface of the casing (302) along the axial direction. The outer surface of the casing (302) is connected to a plurality of vertical second telescopic cylinders (7), and the telescopic ends of the plurality of second telescopic cylinders (7) are connected to the movable ring (6). The outer surface of the movable ring (6) is connected to two steel cables (9), and the two steel cables (9) are symmetrically arranged about the vertical axis of the casing (302), and the ends of the two steel cables (9) away from the movable ring (6) are connected to fixing parts (10), and the two fixing parts (10) are fixed on the corresponding tower column standard section (2011) and are symmetrically arranged about the tower column standard section (2011).

2. The verticality adjustment device for an arch bridge tower according to claim 1, characterized in that: The outer surface of the automatic leveling mechanism is rotatably connected to two horizontally arranged telescopic rods (12), the two telescopic rods (12) are symmetrically arranged with respect to the automatic leveling mechanism, and the free ends of the two telescopic rods (12) are detachably connected to adjacent fixing members (10).

3. The verticality adjustment device for an arch bridge tower according to claim 2, characterized in that: A vertically downward optical signal transmitter is provided at the bottom end of the support shell (1103), an optical signal receiver is provided on the upper surface of the movable base (301), and the center of the optical signal receiver is on the same vertical line as the center of the first tower column standard section (2011) installed on the movable base (301), and the plurality of the first telescopic cylinders (303) and the optical signal transmitter are electrically connected to a controller.

4. The verticality adjustment device for an arch bridge tower according to claim 3, characterized in that: The surface of the automatic leveling mechanism close to the optical signal transmitter is hollowed out.

5. The verticality adjustment device for an arch bridge tower according to claim 4, characterized in that: When one end of the inter-column cross-connection (202) is connected to the tower column (201), the inter-column cross-connection (202) is simultaneously fixedly connected to the tower column standard section (2011) and the tower column adjustable section (2012) by bolts.

6. A method for adjusting the verticality of an arch bridge tower, characterized in that: The verticality adjustment device for an arch bridge tower as claimed in any one of claims 1 to 5 is implemented as follows: S1, determine the installation position of the buckle tower (2), and on the basis of this position, make the foundation (1) and the movable base (301) in order, and after the maintenance of the movable base (301) is completed, the buckle tower (2) can be installed; S2. A casing (302) and an optical signal receiver are installed on the upper surface of the movable base (301), wherein the center of the optical signal receiver is on the same vertical line as the vertical axis of the casing (302), and a plurality of first telescopic cylinders (303) are installed on the outer surface of the casing (302), wherein the other ends of the first telescopic cylinders (303) are fixedly connected to the surface of the foundation (1) via a connecting piece, and then, by controlling the telescopic amounts of the plurality of first telescopic cylinders (303), the vertical axis of the casing (302) is made perpendicular to the horizontal plane; S3, start to install the tower column standard section (2011) on the upper surface of the movable base (301) in sequence, starting from the installation of the second tower column standard section (2011), each time a tower column standard section (2011) is installed, a distance measuring device (11) is connected to its surface to detect the verticality of the tower column standard section (2011), and at the same time, two steel cables (9) are connected to the tower column standard section (2011), and the second telescopic cylinder (7) is controlled to drive the movable ring (6) to move downward and pre-press the tower column adjustable (2012) through the steel cables (9). If the verticality of the tower column standard section (2011) is within the specified error range, continue to install the tower column standard section (2011) upwards. If it exceeds the specified error of the verticality, re-lift the tower column standard section (2011) by using the tower crane, and add a gasket to reduce the error when re-installing until it meets the specified verticality error, and then continue to build the tower column standard section (2011) upwards; S4. When a certain number of tower column standard sections (2011) are built and accumulated, an adjustable tower column (2012) is built on the top and its verticality is adjusted. The height of each lifting block (5) is adjusted according to the data fed back by the distance measuring device (11), so that the vertical center of the tower column standard section (2011) built on the adjustable tower column (2012) is vertically downward and coincides with the center of the optical signal receiver, thereby greatly reducing the verticality error accumulated by multiple tower column standard sections (2011) after the previous construction is completed; S5. Continue to build the tower column standard section (2011) on the upper surface of the tower column adjustable section (2012), and control the verticality of each tower column standard section (2011) through the distance measuring device (11). When the number of built sections accumulates to a certain extent, build the tower column adjustable section (2012) at the top, and repeat the operations in the above steps S3 and S4 until the overall construction of the buckle tower (2) is completed.

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