A method for correcting the installation position of the top support of a steel box girder pier

Abstract

The present invention discloses a method for correcting the installation position of the top support of a steel box girder pier, which relates to the technical field of bridge construction, including: calculating the actual height of the prefabricated steel box girder according to the height coordinate values ​​of the three-dimensional coordinates of the characteristic points of the actual longitudinal axis of the bottom and top surfaces of the prefabricated steel box girder, and then correcting the design height coordinates of the installation position of the top support of the pier; calculating the plane center point coordinates of the two supports according to the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of the two support connection plates of any pier on the prefabricated steel box girder; calculating the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth and intersection plane position between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder according to the plane center point coordinates of the two supports, and then correcting the design plane coordinates of the installation position of the top support of the pier. The present invention facilitates the connection between the bottom plate of the prefabricated steel box girder and the top plate of the support, and can ensure the linear shape of the bridge after the bridge is completed.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a method for correcting the installation position of a top support of a steel box girder pier. Background Art

[0002] With the development of bridge-building technology, the improvement of ship transportation capacity and underwater floating crane hoisting capacity, large-span steel box girders have been widely used in the construction of the Bay Bridge. For example, the 5*110m continuous steel box girder designed in the deep-water area of ​​the Shenzhen-Zhongshan Channel and the triple (6+5+5)×100m span steel box girder designed for the upper structure of the underwater approach bridge of the Huangmaohai Cross-sea Channel all adopt the construction method of large-segment manufacturing and overall hoisting.

[0003] At present, the construction method of installing the support first and then dropping the beam is adopted. However, due to the manufacturing error of the steel box girder, especially the distance error between the bolt holes of the bottom plate support of the steel box girder, the support cannot be connected with the bolt holes of the bottom plate support of the steel box girder; or after the steel box girder is connected with the support, the axis deviation of the cantilever section of the steel box girder exceeds the specification, and when adjusting the center line, the upper and lower swings of the longitudinal movable support will be locked, damaging the support; or the bridge line shape after the bridge is completed does not meet the design requirements. Summary of the invention

[0004] An embodiment of the present invention provides a method for correcting the installation position of the top support of a steel box girder pier, so as to solve the technical problem in the related art that the existing steel box girder has manufacturing errors, resulting in difficulty in connecting the bottom plate of the steel box girder and the top plate of the support, thereby affecting the linear shape of the bridge after completion.

[0005] In a first aspect, a method for correcting the installation position of a top support of a steel box girder pier is provided, comprising:

[0006] Calculate the actual height of the prefabricated steel box girder according to the height coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points on the bottom and top surfaces of the prefabricated steel box girder;

[0007] Correct the design height coordinates of the installation position of the pier top support according to the actual height of the prefabricated steel box girder;

[0008] According to the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of the two support connection plates of any pier on the prefabricated steel box girder, the plane center point coordinates of the two supports are calculated;

[0009] According to the coordinates of the plane center points of the two supports, calculate the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth angle and plane position of the intersection point between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder;

[0010] According to the actual dimensions between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth and plane position of the intersection between the line connecting the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, the design plane coordinates of the installation position of the top support of the pier are corrected.

[0011] In some embodiments, the step of calculating the actual height of the prefabricated steel box girder according to the height coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder includes:

[0012] Mark the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder;

[0013] The total station is used to measure and mark the actual longitudinal axis characteristic points on the bottom and top surfaces of the prefabricated steel box girder and the three-dimensional coordinates of the bolt holes of the two support connecting plates on each pier.

[0014] In some embodiments, the step of identifying the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder includes:

[0015] The prefabricated steel box girder is divided into a first section, a middle section and a tail section, and the longitudinal axis characteristic points are marked on multiple sections of the bottom and top surfaces of the prefabricated steel box girder in the first section, the middle section and the tail section.

[0016] In some embodiments, the step of dividing the prefabricated steel box girder into a first section, a middle section and a tail section, and marking longitudinal axis characteristic points on multiple sections of the bottom surface and the top surface of the prefabricated steel box girder in the first section, the middle section and the tail section comprises:

[0017] The longitudinal axis feature points are marked on the bottom and top surfaces of the prefabricated steel box girder of the first segment, including the mid-span, 1 / 4 span, the top of the two piers, the beam end, and the matching end, for a total of 7 sections;

[0018] The longitudinal axis feature points are marked on the bottom and top surfaces of the prefabricated steel box girder in the middle section, at the mid-span, 1 / 4 span, the top of the pier, and two matching ends, for a total of 6 sections;

[0019] The longitudinal axis characteristic points are marked on 6 sections at the bottom and top surfaces of the prefabricated steel box girder in the tail section, including the mid-span, 1 / 4 span, pier top, beam end, and matching end.

[0020] In some embodiments, the step of using a total station to measure the marked actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder and the three-dimensional coordinates of the bolt holes of the two bearing connection plates on each pier includes:

[0021] Assemble each segment of prefabricated steel box girders in a geologically stable location;

[0022] A total station is set up near the middle of each segment of the prefabricated steel box girder, and the total station is flush with the bottom surface of each segment of the prefabricated steel box girder;

[0023] Set up multiple measurement control points in the front and rear fields of view of the total station, and use the three-dimensional coordinate method to measure the three-dimensional coordinates of the bottom longitudinal feature points of each segment of the prefabricated steel box girder and the two support connection plate bolt holes of any pier on each segment of the prefabricated steel box girder;

[0024] Then, the total station is aligned with the top surface of each segment of the prefabricated steel box girder, and the three-dimensional coordinates of the longitudinal characteristic points on the top surface of each segment of the prefabricated steel box girder are measured using the three-dimensional coordinate method.

[0025] In some embodiments, at least four measurement control points are set in the front and rear fields of view of the total station.

[0026] In some embodiments, the step of calculating the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth angle and the plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder according to the plane center point coordinates of the two supports includes:

[0027] According to the plane coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder, the actual longitudinal axes of the bottom and top surfaces of the prefabricated steel box girder are calculated respectively;

[0028] Check whether the deviation between the actual longitudinal axis of the bottom and top surfaces of the prefabricated steel box girder is within the preset range;

[0029] If the deviation between the actual longitudinal axes of the bottom and top surfaces of the prefabricated steel box girder is within the preset range, the actual dimensions between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth and plane position of the intersection between the line connecting the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder are calculated based on the plane center point coordinates of the two supports.

[0030] In some embodiments, the step of calculating the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth angle and the plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder according to the plane center point coordinates of the two supports further includes:

[0031] The actual longitudinal axis of the top surface of the prefabricated steel box girder after verification is fitted with the designed longitudinal axis of the top surface of the prefabricated steel box girder.

[0032] In some embodiments, the step of correcting the design plane coordinates of the installation position of the pier top support according to the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth and plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder further includes:

[0033] The pier top bearing is installed according to the revised design height coordinates and design plane coordinates of the pier top bearing installation position and the encrypted points determined by the through-measurement.

[0034] In some embodiments, the step of calculating the coordinates of the plane center points of the two supports according to the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of the two support connection plates of any pier on the prefabricated steel box girder includes:

[0035] Check the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of each support connection plate of any pier on the prefabricated steel box girder.

[0036] The beneficial effects brought about by the technical solution provided by the present invention include:

[0037] An embodiment of the present invention provides a method for correcting the installation position of the top support of a steel box girder pier. According to the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder and the three-dimensional coordinates of the bolt holes of the two support connecting plates of any pier on the prefabricated steel box girder, the design height coordinates and the design plane coordinates of the installation position of the support on the top of the pier are corrected, which facilitates the connection between the bottom plate of the prefabricated steel box girder and the top plate of the support and can effectively weaken the influence of the manufacturing error of the steel box girder on the line shape of the bridge after the bridge is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A flow chart of a method for correcting the installation position of a top support of a steel box girder pier provided by an embodiment of the present invention;

[0040] Figure 2 A flow chart of implementing step S10 provided in an embodiment of the present invention;

[0041] Figure 3 A schematic diagram for marking the actual longitudinal axis feature points of the bottom and top surfaces of a prefabricated steel box girder provided in an embodiment of the present invention;

[0042] Figure 4 A schematic diagram for marking characteristic points of the longitudinal axis of the bottom surface of a prefabricated steel box girder provided in an embodiment of the present invention;

[0043] Figure 5 A schematic diagram of implementing step S102 provided in an embodiment of the present invention;

[0044] Figure 6A schematic diagram of implementing step S40 provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] An embodiment of the present invention provides a method for correcting the installation position of the top support of a steel box girder pier, which can solve the technical problem that manufacturing errors in existing steel box girders lead to difficulties in connecting the bottom plate of the steel box girder and the top plate of the support, thereby affecting the linear shape of the bridge after completion.

[0047] See also Figure 1 As shown, an embodiment of the present invention provides a method for correcting the installation position of a top support of a steel box girder pier, comprising:

[0048] Step S10, calculating the actual height of the prefabricated steel box girder according to the height coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder.

[0049] Specifically, see Figure 2 As shown, the step of calculating the actual height of the prefabricated steel box girder according to the height coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder includes:

[0050] Step S101, marking the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder.

[0051] Step S102, using a total station to measure the three-dimensional coordinates of the marked actual longitudinal axis feature points on the bottom and top surfaces of the prefabricated steel box girder and the bolt holes of the two support connection plates on each pier.

[0052] See also Figure 3 As shown, the actual longitudinal axis characteristic points of the bottom and top surfaces of the prefabricated steel box girder are represented by 1 and 2 respectively.

[0053] When the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder are determined, the actual height of the prefabricated steel box girder can be calculated based on the height coordinate values ​​in the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder.

[0054] Step S20, correcting the design height coordinates of the installation position of the support at the top of the pier according to the actual height of the prefabricated steel box girder.

[0055] Usually, the design height coordinates of the installation position of the support on the top of the pier are determined according to the design height of the beam. When the actual height of the prefabricated steel box girder changes, the design height coordinates of the installation position of the support on the top of the pier can be corrected according to the actual height of the prefabricated steel box girder to meet the installation requirements of the support on the top of the pier.

[0056] Step S30, calculating the plane center point coordinates of the two supports according to the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of the two support connection plates of any pier on the prefabricated steel box girder.

[0057] Specifically, each support connecting plate of any pier on the prefabricated steel box girder is provided with four bolt holes. When the plane coordinate values ​​of the three-dimensional coordinates of the four bolt holes of each support connecting plate are determined, the plane center point is the center point of the rectangle surrounded by the center points of the four bolt holes.

[0058] Step S40, calculate the actual dimensions between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth angle and plane position of the intersection between the plane center point line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder based on the plane center point coordinates of the two supports.

[0059] Step S50, correct the design plane coordinates of the installation position of the pier top support according to the actual dimensions between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, and the azimuth and plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder.

[0060] Usually, the design plane coordinates of the installation position of the bearing on the top of the pier are determined based on the design plane coordinates of the bolt holes of the two bearing connecting plates of any pier on the beam body. When the actual plane positions of the bolt holes of the two bearing connecting plates of any pier on the prefabricated steel box girder change, the plane coordinates of the installation position of the bearing on the top of the pier can be reversely calculated based on the actual dimensions between the plane center points of the two bearings and the actual longitudinal axis of the top surface of the prefabricated steel box girder, and the azimuth and plane positions of the intersections between the plane center points of the two bearings and the actual longitudinal axis of the top surface of the prefabricated steel box girder. Then, the design plane coordinates of the installation position of the bearing on the top of the pier can be corrected to meet the installation requirements of the bearing on the top of the pier.

[0061] The method for correcting the installation position of the top support of the steel box girder pier in the embodiment of the present invention corrects the design height coordinates and design plane coordinates of the installation position of the support on the top of the pier according to the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder and the three-dimensional coordinates of the bolt holes of the two support connecting plates of any pier on the prefabricated steel box girder, so as to facilitate the connection between the bottom plate of the prefabricated steel box girder and the top plate of the support, and can effectively weaken the influence of the manufacturing error of the steel box girder on the line shape of the bridge after the completion of the bridge.

[0062] As an optional implementation, in an optional implementation, the step of identifying the actual longitudinal axis feature points of the bottom surface and the top surface of the prefabricated steel box girder includes:

[0063] The prefabricated steel box girder is divided into a first section, a middle section and a tail section, and the longitudinal axis characteristic points are marked on multiple sections of the bottom and top surfaces of the prefabricated steel box girder in the first section, the middle section and the tail section.

[0064] Furthermore, the step of dividing the prefabricated steel box girder into a first section, a middle section and a tail section, and marking longitudinal axis characteristic points on multiple sections of the bottom surface and the top surface of the prefabricated steel box girder of the first section, the middle section and the tail section comprises:

[0065] The longitudinal axis characteristic points are marked on the bottom and top surfaces of the prefabricated steel box girder in the first section, including the mid-span, 1 / 4 span, the top of the two piers, the beam end, and the matching end, a total of 7 sections.

[0066] The longitudinal axis characteristic points are marked on six sections at the bottom and top surfaces of the prefabricated steel box girder in the middle section, including the mid-span, 1 / 4 span, the top of the pier, and two matching ends.

[0067] The longitudinal axis characteristic points are marked on 6 sections at the bottom and top surfaces of the prefabricated steel box girder in the tail section, including the mid-span, 1 / 4 span, pier top, beam end, and matching end.

[0068] See also Figure 4 As shown, from left to right are the first section, middle section and tail section of the prefabricated steel box girder, point 11 is the longitudinal axis characteristic point of the beam end of the bottom surface of the prefabricated steel box girder of the first section and the tail section, point 12 is the longitudinal axis characteristic point of the top position of the pier of the bottom surface of the prefabricated steel box girder of the first section, the middle section and the tail section, point 13 is the longitudinal axis characteristic point of the matching end of the bottom surface of the prefabricated steel box girder of the first section, the middle section and the tail section, point 14 is the longitudinal axis characteristic point in the sub-span of the bottom surface of the prefabricated steel box girder of the first section, the middle section and the tail section, point 15 is the longitudinal axis characteristic point of the 1 / 4 span of the bottom surface of the prefabricated steel box girder of the first section, the middle section and the tail section.

[0069] As an alternative embodiment, in an alternative embodiment, see Figure 5 As shown, the steps of using a total station to measure the marked actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder and the three-dimensional coordinates of the bolt holes of the two bearing connection plates on each pier include:

[0070] Each segment of the prefabricated steel box girder is assembled in a geologically stable location.

[0071] A total station is set up near the middle of each segment of the prefabricated steel box girder, and the total station is flush with the bottom surface of each segment of the prefabricated steel box girder.

[0072] Set up multiple measurement control points in the front and rear fields of view of the total station, and use the three-dimensional coordinate method to measure the three-dimensional coordinates of the bottom longitudinal feature points of each segment of the prefabricated steel box girder and the two support connection plate bolt holes of any pier on each segment of the prefabricated steel box girder. Figure 5 As shown, taking the tail segment as an example, at least four measurement control points 61 are set in the front and rear fields of view of the total station.

[0073] Then, the total station is aligned with the top surface of each segment of the prefabricated steel box girder, and the three-dimensional coordinates of the longitudinal characteristic points on the top surface of each segment of the prefabricated steel box girder are measured using the three-dimensional coordinate method.

[0074] As an optional embodiment, in an optional embodiment, the step of calculating the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth angle and the plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder according to the plane center point coordinates of the two supports includes:

[0075] According to the plane coordinate values ​​of the three-dimensional coordinates of the characteristic points of the actual longitudinal axes of the bottom and top surfaces of the precast steel box girder, the actual longitudinal axes of the bottom and top surfaces of the precast steel box girder are calculated respectively.

[0076] Check whether the deviation between the actual longitudinal axis of the bottom and top surfaces of the prefabricated steel box girder is within the preset range;

[0077] If the deviation between the actual longitudinal axis of the bottom and top surfaces of the prefabricated steel box girder is within the preset range, the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth and plane position of the intersection point between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder are calculated according to the plane center point coordinates of the two supports. Figure 6 As shown, point 21 is the longitudinal axis characteristic point of the beam end of the top surface of the precast steel box girder of the tail segment, point 22 is the longitudinal axis characteristic point of the top position of the pier of the top surface of the precast steel box girder of the tail segment, point 23 is the longitudinal axis characteristic point of the matching end of the top surface of the precast steel box girder of the tail segment, point 24 is the longitudinal axis characteristic point of the middle span of the top surface of the precast steel box girder of the tail segment, and point 25 is the longitudinal axis characteristic point of the 1 / 4 span of the top surface of the precast steel box girder of the tail segment. Points 41 and 42 are the plane center points of the two supports respectively, wherein the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the precast steel box girder refers to the distance between point 41 and point 42 and the actual longitudinal axis of the top surface of the precast steel box girder. Angle a and point 31 are the azimuth angle and the plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the precast steel box girder. In theory, point 31 and point 22 should be coincident points.

[0078] By checking whether the deviation between the actual longitudinal axes of the bottom and top surfaces of the prefabricated steel box girder is within the preset range, we can prevent prefabricated steel box girders with excessive dimensional errors from entering the construction phase and ensure the construction quality.

[0079] As an optional embodiment, in an optional embodiment, the step of calculating the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth and plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder according to the plane center point coordinates of the two supports also includes:

[0080] The actual longitudinal axis of the top surface of the prefabricated steel box girder after verification is fitted with the designed longitudinal axis of the top surface of the prefabricated steel box girder to improve the accuracy of the actual longitudinal axis of the top surface of the prefabricated steel box girder.

[0081] As an optional implementation, in an optional implementation, the step of correcting the design plane coordinates of the installation position of the pier top support according to the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth and plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder includes:

[0082] The pier top support is installed according to the revised design height coordinates and design plane coordinates of the pier top support installation position and the encrypted points determined by the through-measurement, so as to ensure the installation accuracy of the pier top support, facilitate the connection between the prefabricated steel box girder bottom plate and the support top plate, and ensure the bridge line shape after completion.

[0083] As an optional implementation, in an optional implementation, the step of calculating the plane center point coordinates of the two supports according to the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of the two support connection plates of any pier on the prefabricated steel box girder includes:

[0084] Check the plane coordinate values ​​of the three-dimensional coordinates of each bearing connection plate bolt hole of any pier on the prefabricated steel box girder to prevent bearing connection plate bolt holes with excessive size errors from entering the construction stage and ensure construction quality.

[0085] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0086] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0087] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A method for correcting the installation position of the top support of a steel box girder pier, characterized in that: include: Calculate the actual height of the prefabricated steel box girder according to the height coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points on the bottom and top surfaces of the prefabricated steel box girder; Correct the design height coordinates of the installation position of the top support of the pier according to the actual height of the prefabricated steel box girder; According to the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of the two support connection plates of any pier on the prefabricated steel box girder, the plane center point coordinates of the two supports are calculated; According to the coordinates of the plane center points of the two supports, calculate the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth angle and plane position of the intersection point between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder; According to the actual dimensions between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth and plane position of the intersection between the line connecting the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, the design plane coordinates of the installation position of the top support of the pier are corrected.

2. The method for correcting the installation position of the top support of the steel box girder pier according to claim 1, characterized in that: The step of calculating the actual height of the prefabricated steel box girder according to the height coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder comprises: Mark the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder; The total station is used to measure and mark the actual longitudinal axis characteristic points on the bottom and top surfaces of the prefabricated steel box girder and the three-dimensional coordinates of the bolt holes of the two support connecting plates on each pier.

3. The method for correcting the installation position of the top support of the steel box girder pier according to claim 2, characterized in that: The step of marking the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder includes: The prefabricated steel box girder is divided into a first section, a middle section and a tail section, and the longitudinal axis characteristic points are marked on multiple sections of the bottom and top surfaces of the prefabricated steel box girder in the first section, the middle section and the tail section.

4. The method for correcting the installation position of the top support of the steel box girder pier according to claim 3, characterized in that: The step of dividing the prefabricated steel box girder into a first section, a middle section and a tail section, and marking longitudinal axis characteristic points on multiple sections of the bottom surface and the top surface of the prefabricated steel box girder in the first section, the middle section and the tail section comprises: The longitudinal axis feature points are marked on the bottom and top surfaces of the prefabricated steel box girder of the first segment, including the mid-span, 1 / 4 span, the top of the two piers, the beam end, and the matching end, for a total of 7 sections; The longitudinal axis feature points are marked on the bottom and top surfaces of the prefabricated steel box girder in the middle section, at the mid-span, 1 / 4 span, the top of the pier, and two matching ends, for a total of 6 sections; The longitudinal axis characteristic points are marked on 6 sections at the bottom and top surfaces of the prefabricated steel box girder in the tail section, including the mid-span, 1 / 4 span, pier top, beam end, and matching end.

5. The method for correcting the installation position of the top support of a steel box girder pier according to claim 2, characterized in that: The step of using a total station to measure the marked actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder and the three-dimensional coordinates of the bolt holes of the two support connection plates on each pier includes: Assemble each segment of prefabricated steel box girders in a geologically stable location; A total station is set up near the middle of each segment of the prefabricated steel box girder, and the total station is flush with the bottom surface of each segment of the prefabricated steel box girder; Set up multiple measurement control points in the front and rear fields of view of the total station, and use the three-dimensional coordinate method to measure the three-dimensional coordinates of the bottom longitudinal feature points of each segment of the prefabricated steel box girder and the two support connection plate bolt holes of any pier on each segment of the prefabricated steel box girder; Then, the total station is aligned with the top surface of each segment of the prefabricated steel box girder, and the three-dimensional coordinates of the longitudinal characteristic points on the top surface of each segment of the prefabricated steel box girder are measured using the three-dimensional coordinate method.

6. The method for correcting the installation position of the top support of a steel box girder pier according to claim 5, characterized in that: Set at least 4 measurement control points in the front and rear fields of view of the total station.

7. The method for correcting the installation position of the top support of a steel box girder pier according to claim 1, characterized in that: The step of calculating the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth and plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder according to the plane center point coordinates of the two supports comprises: According to the plane coordinate values ​​of the three-dimensional coordinates of the actual longitudinal axis feature points of the bottom and top surfaces of the prefabricated steel box girder, the actual longitudinal axes of the bottom and top surfaces of the prefabricated steel box girder are calculated respectively; Check whether the deviation between the actual longitudinal axis of the bottom and top surfaces of the prefabricated steel box girder is within the preset range; If the deviation between the actual longitudinal axes of the bottom and top surfaces of the prefabricated steel box girder is within the preset range, the actual dimensions between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder, as well as the azimuth and plane position of the intersection between the line connecting the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder are calculated based on the plane center point coordinates of the two supports.

8. The method for correcting the installation position of the top support of a steel box girder pier according to claim 7, characterized in that: The step of calculating the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth and plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder according to the plane center point coordinates of the two supports also includes: The actual longitudinal axis of the top surface of the prefabricated steel box girder after verification is fitted with the designed longitudinal axis of the top surface of the prefabricated steel box girder.

9. The method for correcting the installation position of the top support of a steel box girder pier according to claim 1, characterized in that: The step of correcting the design plane coordinates of the installation position of the pier top support according to the actual size between the plane center points of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder and the azimuth and plane position of the intersection between the plane center point connection line of the two supports and the actual longitudinal axis of the top surface of the prefabricated steel box girder also includes: The pier top bearing is installed according to the revised design height coordinates and design plane coordinates of the pier top bearing installation position and the encrypted points determined by the through-measurement.

10. The method for correcting the installation position of the top support of a steel box girder pier according to claim 1, characterized in that: The step of calculating the coordinates of the plane center points of the two supports according to the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of the two support connection plates of any pier on the prefabricated steel box girder includes: Check the plane coordinate values ​​of the three-dimensional coordinates of the bolt holes of each support connection plate of any pier on the prefabricated steel box girder.

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