Construction positioning method and system for beam arch bridge steel box arch rib slope assembly

Abstract

The invention relates to the field of bridge construction, and provides a construction positioning method and system for beam arch bridge steel box arch rib slope assembly, the beam arch bridge steel box arch rib is subjected to segmented consideration, an accurate coordinate system is established, the geometric dimension and stress deformation of the steel box arch rib are fully considered, and the coordinates of all measuring points on the steel box arch rib segments are accurately positioned. And then relation conversion is carried out according to the coordinates of all the measuring points on the steel box arch rib sections, so that the spatial position coordinates of all the measuring points on the steel box arch rib sections are monitored, the positions of the steel box arch rib sections are finely adjusted, and the manufacturing process of the jig frame can be designed by directly utilizing accurate measuring point coordinate data and position data of the steel box arch rib sections. According to the construction positioning method for beam arch bridge steel box arch rib slope assembly, positioning errors caused by random defects in the production process are eliminated, the arch rib installation precision is improved, the positioning operation time is effectively shortened, the working efficiency of construction positioning is remarkably improved, and the accuracy and efficiency of the construction positioning method for beam arch bridge steel box arch rib slope assembly are improved.

Description

Technical Field

[0001] The present invention relates to the field of bridge construction, and particularly to a construction positioning method and system for slope assembly of steel box arch ribs of beam arch bridges. Background Art

[0002] With the rapid development of the urban traffic system, as an important part of the interchange design, overpass bridges have become a key means to achieve smooth multi-directional traffic intersections. Among them, incremental launching construction is one of the most important construction methods for overpass bridges. During the incremental launching construction process, the coordinates of each part of the bridge need to be continuously monitored and verified on-site to ensure that the bridge is smoothly launched to the designed position.

[0003] In the prior art, the incremental launching construction of bridges usually mainly focuses on the scenario of flat slope construction, and is carried out in accordance with the steps of precasting on the bench and incremental launching section by section. In the scenario of flat slope construction, the monitoring of each part of the bridge is relatively simple. However, with the continuous development of bridge construction, the construction scenarios of bridges have gradually become complex, and the requirements for construction accuracy and construction efficiency have also been continuously improved. Especially in the scenario of uneven construction, during the precasting and assembly process of bridge components, the difficulty of position monitoring of each part has increased significantly, and the requirements for position monitoring of spatial structure systems such as beam arch bridges are even higher. The existing construction positioning methods can no longer meet the accuracy requirements of beam arch bridges in complex construction scenarios.

[0004] Therefore, how to design a construction method for slope assembly of beam arch bridges to achieve precise positioning of the arch ribs of beam arch bridges has become an urgent problem to be solved. Summary of the Invention

[0005] Based on this, a construction positioning method and system for slope assembly of steel box arch ribs of beam arch bridges provided by the present invention, by considering the steel box arch ribs of the beam arch bridge in sections, regarding each steel box arch rib segment as an independent target, establishing a precise coordinate system, fully considering the geometric dimensions and stress deformation of the steel box arch ribs, achieving precise positioning of the coordinates of each measuring point on the steel box arch rib segment, and then performing relationship conversion according to the coordinates of each measuring point on the steel box arch rib segment to monitor the spatial position coordinates of each measuring point on the steel box arch rib segment and fine-tune the position of the steel box arch rib segment. Moreover, the production process of the falsework can be directly designed by using the accurate measuring point coordinate data and the position data of the steel box arch rib segment to eliminate the positioning errors caused by random defects during the production process, improve the installation accuracy of the arch ribs, effectively reduce the positioning operation time, and significantly improve the working efficiency of construction positioning. The present invention improves the accuracy and efficiency of the construction positioning method for slope assembly of steel box arch ribs of beam arch bridges.

[0006] A construction positioning method for slope assembly of steel box arch ribs of beam arch bridges proposed by the present invention includes: Establish a multiple coordinate system for the slope assembly of the steel box arch rib, where the multiple coordinate system includes a local coordinate system of the arch axis, a full-bridge incremental launching space coordinate system, and a three-dimensional geodetic coordinate system; Divide the steel box arch rib into segments to obtain multiple steel box arch rib segments, and then select measurement points for each steel box arch rib segment to obtain the corresponding measurement points for each steel box arch rib segment. Each steel box arch rib segment corresponds to multiple different measurement points; Calculate the spatial positions of the measurement points according to the multiple coordinate system to obtain the coordinate values of all the measurement points; Perform falsework positioning based on the coordinate values of the measurement points, and the falsework positioning is based on the arch rib design parameters; Match and splice all the steel box arch rib segments according to the measurement points and the falsework, and the matching and splicing are carried out in the order of incremental launching construction.

[0007] In summary, according to the above construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge, by considering the steel box arch rib of the beam arch bridge in segments, regarding each steel box arch rib segment as an independent target, establishing an accurate coordinate system, fully considering the geometric dimensions and stress deformation of the steel box arch rib, accurately positioning the coordinates of each measuring point on the steel box arch rib segment, and then performing relationship conversion based on the coordinates of each measuring point on the steel box arch rib segment to monitor the spatial position coordinates of each measuring point on the steel box arch rib segment and fine-tune the position of the steel box arch rib segment. Moreover, the production process of the falsework can be directly designed using the accurate measuring point coordinate data and the position data of the steel box arch rib segment to eliminate the positioning error caused by random defects during the production process, improve the installation accuracy of the arch rib, effectively reduce the positioning operation time, and significantly improve the work efficiency of construction positioning. The present invention improves the accuracy and efficiency of the construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge. Specifically, a multiple coordinate system for the slope assembly of the steel box arch rib is established. The multiple coordinate system includes a local coordinate system of the arch axis, a global jacking space coordinate system, and a three-dimensional geodetic coordinate system. An accurate coordinate system is established, providing effective basic data for subsequent positioning coordinate calculation. The steel box arch rib is segmented to obtain multiple steel box arch rib segments, and then measuring points are selected for each steel box arch rib segment to obtain the corresponding measuring points for each steel box arch rib segment. Each steel box arch rib segment corresponds to multiple different measuring points. Through segmented setting and the selection of different measuring points, the positioning is refined, avoiding the error of overall calculation. The spatial position of the measuring points is calculated according to the multiple coordinate system to obtain the coordinate values of all the measuring points, accurately giving the coordinates of different measuring points in multiple coordinate systems, improving the accuracy of the overall construction positioning. Falsework positioning is performed based on the coordinate values of the measuring points. The falsework positioning is based on the design parameters of the arch rib. All the steel box arch rib segments are matched and spliced according to the measuring points and the falsework. The matching and splicing are carried out in the order of jacking construction to eliminate the positioning error caused by random defects during the production process, improve the installation accuracy of the arch rib, effectively reduce the positioning operation time, and significantly improve the work efficiency of construction positioning. The present invention improves the accuracy and efficiency of the construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge.

[0008] Further, the steps of establishing the multiple coordinate system for the slope assembly of the steel box arch rib specifically include: Set the arch foot of the arch axis as the origin, and set the longitudinal slope of the bridge body as the abscissa direction and set the normal direction of the longitudinal slope of the bridge body as the ordinate direction to establish a local coordinate system of the arch axis - ; Set the midpoint of the connection line of the arch feet of any two symmetric arch ribs as the origin, and set the jacking direction as the abscissa direction and set the transverse direction of the slope as the vertical coordinate direction Set the direction perpendicular to the jacking direction on the plane formed by the horizontal coordinate direction and the vertical coordinate direction as the vertical coordinate direction to establish - - the full-bridge jacking space coordinate system; Set the projection of the horizontal coordinate direction of the full-bridge jacking space coordinate system on the horizontal ground as the horizontal coordinate direction Set the direction perpendicular to the horizontal ground and upward as the vertical coordinate direction Set the transverse bridge direction as the vertical coordinate direction to establish - - the three-dimensional geodetic coordinate system.

[0009] Furthermore, the step of segmenting the steel box arch rib to obtain multiple steel box arch rib segments specifically includes: Divide the steel box arch rib into multiple steel box arch rib segments. The splicing section of each steel box arch rib segment is perpendicular to the tangent direction of the arch axis. Each steel box arch rib segment includes two ports.

[0010] Furthermore, the step of selecting measuring points for each steel box arch rib segment to obtain the measuring points corresponding to each steel box arch rib segment specifically includes: After obtaining the steel box arch rib segment, select measuring points. Set the measuring points on the center side of the bridge deck of the splicing section of the steel box arch rib segment. Set three measuring points at the ports of each steel box arch rib segment. The six measuring points at the two ports are respectively marked as 、 、 and 、 、 ; The selection of the measuring points specifically includes setting the arch axis measuring points and as two points with a fixed distance t from the port in the local coordinate system of the arch axis. Then, respectively pass through the arch axis measuring points and to make perpendicular lines to the arch axis. The intersection points of the perpendicular lines to the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment are respectively set as 、 and 、 .

[0011] Furthermore, the step of calculating the spatial positions of the measuring points according to the multiple coordinate systems to obtain the coordinate values of all the measuring points specifically includes: Establish the arch axis function of the steel box arch rib according to the local coordinate system of the arch axis. The specific arch axis function is ( ). The coordinates of any point M on the arch axis in the local coordinate system of the arch axis are specifically as follows: , , where and respectively represent the abscissa and ordinate of any point M in the local coordinate system of the arch axis, represents the angle between the tangent of the arch axis at any point M and the abscissa direction of the local coordinate system of the arch axis; Obtain the slope between the longitudinal slope of the bridge body and the longitudinal slope of the under-bridge jacking, , to calculate the coordinates of any point M in the full-bridge jacking space coordinate system. The coordinates of any point M in the full-bridge jacking space coordinate system are specifically as follows: , where , , respectively represent the abscissa, ordinate and vertical coordinate of any point M in the full-bridge jacking space coordinate system, B represents The distance between the axes of two steel box arch rib segments; The coordinates of all measurement points in the full-bridge jacking space coordinate system are specifically as follows: , where represents the measurement point, , , respectively represent the abscissa, ordinate and vertical coordinate of the measurement point in the full-bridge jacking space coordinate system, H represents the sectional height of the steel box arch rib segment, W represents the sectional width of the steel box arch rib segment; Obtain the longitudinal slope of the slope , calculate the coordinates of any point M in the geodetic three-dimensional coordinate system. The coordinates of any point M in the geodetic three-dimensional coordinate system are specifically as follows: , where , , respectively represent the abscissa, ordinate and vertical coordinate of any point M in the geodetic three-dimensional coordinate system; Calculate the coordinates of the measuring points at the intersection positions of the perpendicular line of the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment in the three-dimensional geodetic coordinate system. The coordinates of the measuring points at the intersection positions of the perpendicular line of the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment in the three-dimensional geodetic coordinate system are specifically as follows: , wherein, 、 、 respectively represent the abscissa, ordinate and vertical coordinate of the measuring point at the intersection position of the perpendicular line of the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment in the three-dimensional geodetic coordinate system.

[0012] Further, the step of positioning the falsework according to the coordinate values of the measuring points specifically includes: Obtain the actual design parameters of the steel box arch rib to adjust the bearing points of the falsework and the measuring points at the lower edge of the cross-section of the steel box arch rib segment. The adjustment is used to determine whether the spatial coordinates of the bearing points of the falsework and the measuring points at the lower edge of the cross-section of the steel box arch rib segment in the full-bridge jacking space coordinate system and the three-dimensional geodetic coordinate system meet the requirements of the splicing accuracy threshold in the actual design parameters of the steel box arch rib; Set the limit plate in the vertical coordinate direction of the full-bridge jacking space coordinate system. The limit plate is used to limit the lateral deformation and movement of the steel box arch rib.

[0013] Further, the step of matching and splicing all the steel box arch rib segments according to the measuring points and the falsework specifically includes: Lift the steel box arch rib to the positioning falsework and temporarily fix it. After the lifting is completed, conduct a re-measurement of the positioning of each measuring point of the steel box arch rib segment. Determine a plane according to any three measuring points in the same steel box arch rib segment, and judge whether the current survey result meets the error range threshold in the actual design parameters of the steel box arch rib compared with the actual calculation result; Position and install all the steel box arch rib segments in the order of jacking construction to complete the welding and assembly of the entire steel box arch rib.

[0014] A construction positioning system for the slope assembly of the steel box arch rib of a beam arch bridge proposed by the present invention includes: A coordinate establishment module for establishing a multi-coordinate system for the slope assembly of the steel box arch rib. The multi-coordinate system includes a local coordinate system of the arch axis, a full-bridge jacking space coordinate system and a three-dimensional geodetic coordinate system; A segment selection and point selection module for segmenting the steel box arch rib to obtain multiple steel box arch rib segments, and then selecting measuring points for each steel box arch rib segment to obtain the corresponding measuring points for each steel box arch rib segment. Each steel box arch rib segment corresponds to multiple different measuring points; A coordinate calculation module, configured to calculate the spatial positions of the measuring points according to the multiple coordinate systems, so as to obtain the coordinate values of all the measuring points; A jig positioning module, configured to perform jig positioning according to the coordinate values of the measuring points, and the jig positioning is based on the arch rib design parameters; A matching and splicing module, configured to match and splice all the steel box arch rib segments according to the measuring points and the jig, and the matching and splicing is carried out in the jacking construction order.

[0015] The present invention also provides a storage medium, which stores one or more programs, and when the programs are executed by a processor, the construction positioning method for the slope assembly of the steel box arch rib of the beam arch bridge as described above is implemented.

[0016] The present invention also provides a computer device, which includes a memory and a processor, wherein: The memory is used for storing a computer program; When the processor executes the computer program stored in the memory, the construction positioning method for the slope assembly of the steel box arch rib of the beam arch bridge as described above is implemented. Description of the Drawings

[0017] Figure 1 It is a flowchart of the construction positioning method for the slope assembly of the steel box arch rib of the beam arch bridge proposed in the first embodiment of the present invention; Figure 2 It is a flowchart of the construction positioning method for the slope assembly of the steel box arch rib of the beam arch bridge proposed in the second embodiment of the present invention; Figure 3 It is a structural schematic diagram of the construction positioning system for the slope assembly of the steel box arch rib of the beam arch bridge proposed in the third embodiment of the present invention; Figure 4 It is a schematic diagram of the multiple coordinate systems of the main bridge of the present invention; Figure 5 It is a front view of the main bridge of the multiple coordinate systems of the present invention; Figure 6a It is the first measuring point layout diagram of the present invention; Figure 6b It is the second measuring point layout diagram of the present invention; Figure 7a It is the first schematic diagram of the cross section of the steel box arch rib segment and the coordinate system of the present invention; Figure 7b It is the second schematic diagram of the cross section of the steel box arch rib segment and the coordinate system of the present invention; Figure 8 It is a schematic diagram of the included angle between the arch axis tangent and the transverse coordinate axis in the jacking coordinate system of the present invention; The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0018] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] Please refer to Figure 1 , which shows the flowchart of the construction positioning method for the slope assembly of the steel box arch rib of the beam arch bridge proposed in the first embodiment of the present invention. This construction positioning method for the slope assembly of the steel box arch rib of the beam arch bridge includes steps S01 to S05, where: Step S01: Establish a multiple coordinate system for the slope assembly of the steel box arch rib; It should be noted that in this embodiment, the arch foot of the arch axis is set as the origin, and the longitudinal slope of the bridge body is set as the abscissa direction , and the normal direction of the longitudinal slope of the bridge body is set as the ordinate direction , so as to establish a local coordinate system of the arch axis - ; Set the midpoint of the connection line of the arch feet of any two symmetric arch ribs as the origin, set the jacking direction as the abscissa direction , set the transverse direction of the slope as the vertical coordinate direction , and set the direction perpendicular to the jacking direction on the plane formed by the abscissa direction and the vertical coordinate direction as the ordinate direction , so as to establish - - The overall bridge jacking space coordinate system; Set the projection of the abscissa direction of the overall bridge jacking space coordinate system on the horizontal ground as the abscissa direction Set the direction vertically upward from the horizontal ground as the ordinate direction Set the cross-bridge direction as the vertical coordinate direction to establish - - a three-dimensional earth coordinate system; For the specific setting of the multi-coordinate system in the beam arch bridge, please refer to Figure 4 and Figure 5 .

[0022] Step S02: Divide the steel box arch rib into segments to obtain multiple steel box arch rib segments, and then select measurement points for each steel box arch rib segment to obtain the measurement points corresponding to each steel box arch rib segment; It should be noted that in this embodiment, the steel box arch rib is divided into multiple steel box arch rib segments, the splicing section of each steel box arch rib segment is perpendicular to the tangent direction of the arch axis, and each steel box arch rib segment includes two ports; After obtaining the steel box arch rib segment, select measurement points, set the measurement points on the center side of the bridge deck of the splicing section of the steel box arch rib segment, and set three measurement points at the ports of each steel box arch rib segment. The six measurement points at the two ports are respectively marked as , , and , , ; The specific selection of the measurement points includes setting the arch axis measurement points and as two points with a fixed distance t from the port in the local coordinate system of the arch axis. Then, respectively draw perpendicular lines to the arch axis through the arch axis measurement points and . The intersection points of the perpendicular lines to the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment are respectively set as , and , ; For the specific layout of the measurement points, please refer to Figure 6a and Figure 6b .

[0023] Step S03: Calculate the spatial positions of the measurement points according to the multi-coordinate system to obtain the coordinate values of all measurement points; It should be noted that in this embodiment, an arch axis function of the steel box arch rib is established according to the local coordinate system of the arch axis. The specific arch axis function is ( ) The coordinates of any point M on the arch axis in the local coordinate system of the arch axis are specifically as follows: , , wherein, and respectively represent the abscissa and ordinate of any point M in the local coordinate system of the arch axis, represents the angle between the tangent of the arch axis at any point M and the abscissa direction of the local coordinate system of the arch axis; Obtain the slope between the longitudinal slope of the bridge body and the longitudinal slope of the jacking under the bridge , to calculate the coordinates of any point M in the spatial coordinate system of the full-bridge jacking. The coordinates of any point M in the spatial coordinate system of the full-bridge jacking are specifically as follows: , wherein, , , respectively represent the abscissa, ordinate and vertical coordinate of any point M in the spatial coordinate system of the full-bridge jacking, B represents the distance between the axes of two steel box arch rib segments; The coordinates of all measurement points in the spatial coordinate system of the full-bridge jacking are specifically as follows: , wherein, represents the measurement point, , , respectively represent the abscissa, ordinate and vertical coordinate of the measurement point in the spatial coordinate system of the full-bridge jacking, H represents the section height of the steel box arch rib segment, W represents the section width of the steel box arch rib segment; Obtain the longitudinal slope of the slope , calculate the coordinates of any point M in the three-dimensional geodetic coordinate system. The coordinates of any point M in the three-dimensional geodetic coordinate system are specifically as follows: , wherein, , , respectively represent the abscissa, ordinate and vertical coordinate of any point M in the three-dimensional geodetic coordinate system; Calculate the coordinates of the measurement point at the intersection position of the perpendicular line of the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment in the three-dimensional geodetic coordinate system. The coordinates of the measurement point at the intersection position of the perpendicular line of the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment in the three-dimensional geodetic coordinate system are specifically as follows: , wherein, , , The abscissa, ordinate, and vertical coordinate in the geodetic three-dimensional coordinate system of the measurement points respectively representing the intersection positions of the perpendicular line of the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment; In this embodiment, for the relationship between the cross-section of the steel box arch rib segment and the coordinate system, please refer to Figure 7a and Figure 7b . For the included angle relationship between the tangent of the arch axis and the horizontal axis in the jacking coordinate system, please refer to Figure 8 .

[0024] Step S04: Position the falsework according to the coordinate values of the measurement points; It should be noted that in this embodiment, the actual design parameters of the steel box arch rib are obtained to adjust the bearing points of the falsework and the measurement points on the lower edge of the cross-section of the steel box arch rib segment. The adjustment is used to determine whether the spatial coordinates of the bearing points of the falsework and the measurement points on the lower edge of the cross-section of the steel box arch rib segment in the full-bridge jacking space coordinate system and the geodetic three-dimensional coordinate system meet the requirements of the splicing accuracy threshold in the actual design parameters of the steel box arch rib; Set the limit plate in the vertical coordinate direction of the full-bridge jacking space coordinate system. The limit plate is used to limit the lateral deformation and movement of the steel box arch rib.

[0025] Step S05: Match and splice all the steel box arch rib segments according to the measurement points and the falsework; It should be noted that in this embodiment, the steel box arch rib is hoisted onto the positioning falsework and temporarily fixed. After the hoisting is completed, the positioning remeasurement of each measurement point of the steel box arch rib segment is carried out. A plane is determined according to any three measurement points in the same steel box arch rib segment to judge whether the current surveying and mapping results meet the error range threshold in the actual design parameters of the steel box arch rib; Position and install all the steel box arch rib segments in the order of jacking construction to complete the welding and assembly of the entire steel box arch rib.

[0026] In summary, according to the above construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge, by considering the steel box arch rib of the beam arch bridge in segments, regarding each steel box arch rib segment as an independent target, establishing a precise coordinate system, fully considering the geometric dimensions and stress deformation of the steel box arch rib, accurately positioning the coordinates of each measuring point on the steel box arch rib segment, and then performing relationship conversion based on the coordinates of each measuring point on the steel box arch rib segment to monitor the spatial position coordinates of each measuring point on the steel box arch rib segment and fine-tune the position of the steel box arch rib segment. Moreover, the fabrication process of the falsework can be directly designed using the accurate measuring point coordinate data and the position data of the steel box arch rib segment to eliminate the positioning error caused by random defects during the production process, improve the installation accuracy of the arch rib, effectively reduce the positioning operation time, and significantly improve the work efficiency of construction positioning. The present invention improves the accuracy and efficiency of the construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge. Specifically, a multiple coordinate system for the slope assembly of the steel box arch rib is established. The multiple coordinate system includes a local coordinate system of the arch axis, a spatial coordinate system for full-bridge jacking, and a three-dimensional geodetic coordinate system. Establishing a precise coordinate system provides effective basic data for subsequent positioning coordinate calculation. The steel box arch rib is segmented to obtain multiple steel box arch rib segments, and then measuring points are selected for each steel box arch rib segment to obtain the corresponding measuring points for each steel box arch rib segment. Each steel box arch rib segment corresponds to multiple different measuring points. By setting segments and selecting different measuring points, the positioning is refined, avoiding the error of overall calculation. According to the multiple coordinate system, the spatial positions of the measuring points are calculated to obtain the coordinate values of all the measuring points, accurately giving the coordinates of different measuring points in multiple coordinate systems, improving the accuracy of overall construction positioning. According to the coordinate values of the measuring points, falsework positioning is performed. The falsework positioning is based on the design parameters of the arch rib. According to the measuring points and the falsework, all the steel box arch rib segments are matched and spliced. The matching and splicing are carried out in the order of jacking construction to eliminate the positioning error caused by random defects during the production process, improve the installation accuracy of the arch rib, effectively reduce the positioning operation time, and significantly improve the work efficiency of construction positioning. The present invention improves the accuracy and efficiency of the construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge.

[0027] Please refer to Figure 2 , which shows the flow chart of the construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge proposed in the second embodiment of the present invention. This construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge includes steps S11 to S15, where: Step S11: Set the arch springing of the arch axis as the origin, set the longitudinal slope of the bridge body as the abscissa direction, and set the normal direction of the longitudinal slope of the bridge body as the ordinate direction to establish a local coordinate system of the arch axis. Set the midpoint of the connection line of the arch feet of any two symmetric arch ribs as the origin, set the jacking direction as the abscissa direction, set the cross-bridge direction of the slope as the vertical coordinate direction, and set the direction perpendicular to the jacking direction on the plane formed by the abscissa direction and the vertical coordinate direction as the ordinate direction to establish a full-bridge jacking space coordinate system. Set the projection of the abscissa direction of the full-bridge jacking space coordinate system on the horizontal ground as the abscissa direction, set the direction vertically upward perpendicular to the horizontal ground as the ordinate direction, and set the cross-bridge direction as the vertical coordinate direction to establish a three-dimensional geodetic coordinate system; Step S12: Divide the steel box arch rib into multiple steel box arch rib segments. After obtaining the steel box arch rib segments, select measurement points. Set the measurement points on the center side of the bridge deck of the splicing section of the steel box arch rib segments, and set three measurement points at the ports of each steel box arch rib segment; Step S13: Establish an arch axis function of the steel box arch rib according to the local coordinate system of the arch axis, obtain the slope between the longitudinal slope of the bridge body and the longitudinal jacking slope under the bridge, so as to calculate the coordinates of any point in the full-bridge jacking space coordinate system, obtain the longitudinal slope of the slope, calculate the coordinates of any point in the three-dimensional geodetic coordinate system, and calculate the coordinates of the measurement points at the intersection positions of the vertical line of the arch axis and the upper and lower edges of the cross-section of the steel box arch rib segment in the three-dimensional geodetic coordinate system; Step S14: Obtain the actual design parameters of the steel box arch rib, so as to adjust the bearing points of the falsework and the measurement points at the lower edge of the cross-section of the steel box arch rib segment, and set the limit plates in the vertical coordinate direction of the full-bridge jacking space coordinate system; Step S15: Hoist the steel box arch rib onto the positioning falsework and fix it temporarily. After the hoisting is completed, conduct a positioning remeasurement of each measurement point of the steel box arch rib segment. Determine a plane according to any three measurement points in the same steel box arch rib segment, and judge whether the current surveying and mapping results meet the error range threshold in the actual design parameters of the steel box arch rib. Position and install all the steel box arch rib segments in the order of jacking construction to complete the welding and assembly of the entire steel box arch rib.

[0028] In summary, according to the above construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge, by considering the steel box arch rib of the beam arch bridge in segments, regarding each steel box arch rib segment as an independent target, establishing a precise coordinate system, fully considering the geometric dimensions and stress deformation of the steel box arch rib, accurately positioning the coordinates of each measuring point on the steel box arch rib segment, and then performing relationship conversion based on the coordinates of each measuring point on the steel box arch rib segment to monitor the spatial position coordinates of each measuring point on the steel box arch rib segment and fine-tune the position of the steel box arch rib segment. Moreover, the production process of the falsework can be directly designed using the accurate measuring point coordinate data and the position data of the steel box arch rib segment to eliminate the positioning error caused by random defects in the production process, improve the installation accuracy of the arch rib, effectively reduce the positioning operation time, and significantly improve the work efficiency of construction positioning. The present invention improves the accuracy and efficiency of the construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge. Specifically, a multiple coordinate system for the slope assembly of the steel box arch rib is established. The multiple coordinate system includes a local coordinate system of the arch axis, a full-bridge jacking space coordinate system, and a three-dimensional geodetic coordinate system. By establishing a precise coordinate system, effective basic data is provided for subsequent positioning coordinate calculation. The steel box arch rib is segmented to obtain multiple steel box arch rib segments, and then measuring points are selected for each steel box arch rib segment to obtain the corresponding measuring points for each steel box arch rib segment. Each steel box arch rib segment corresponds to multiple different measuring points. Through segmented setting and selection of different measuring points, the positioning is refined, avoiding the error of overall calculation. The spatial position of the measuring points is calculated according to the multiple coordinate system to obtain the coordinate values of all the measuring points, accurately giving the coordinates of different measuring points in multiple coordinate systems and improving the accuracy of overall construction positioning. Falsework positioning is performed based on the coordinate values of the measuring points. The falsework positioning is based on the design parameters of the arch rib. All the steel box arch rib segments are matched and spliced according to the measuring points and the falsework. The matching and splicing are carried out in the order of jacking construction to eliminate the positioning error caused by random defects in the production process, improve the installation accuracy of the arch rib, effectively reduce the positioning operation time, and significantly improve the work efficiency of construction positioning. The present invention improves the accuracy and efficiency of the construction positioning method for the slope assembly of the steel box arch rib of a beam arch bridge.

[0029] Please refer to Figure 3 , which shows a schematic structural diagram of a construction positioning system for the slope assembly of the steel box arch rib of a beam arch bridge proposed in the third embodiment of the present invention. The system includes: A coordinate establishment module 10, configured to establish a multiple coordinate system for the slope assembly of the steel box arch rib, where the multiple coordinate system includes a local coordinate system of the arch axis, a full-bridge jacking space coordinate system, and a three-dimensional geodetic coordinate system; The segmented point selection module 20 is used to segment the steel box arch rib to obtain multiple steel box arch rib segments, and then select measurement points for each steel box arch rib segment to obtain the measurement points corresponding to each steel box arch rib segment. Each steel box arch rib segment corresponds to multiple different measurement points; The coordinate calculation module 30 is used to calculate the spatial positions of the measurement points according to the multiple coordinate systems to obtain the coordinate values of all the measurement points; The falsework positioning module 40 is used to perform falsework positioning according to the coordinate values of the measurement points, and the falsework positioning is based on the arch rib design parameters; The matching and splicing module 50 is used to match and splice all the steel box arch rib segments according to the measurement points and the falsework, and the matching and splicing is in the jacking construction order.

[0030] The present invention also provides a computer storage medium, on which one or more programs are stored. When the program is executed by a processor, the construction positioning method for the ramp assembly of the steel box arch rib of the beam arch bridge described above is implemented.

[0031] The present invention also provides a computer device, including a memory and a processor. The memory is used to store a computer program, and the processor is used to execute the computer program stored on the memory to implement the construction positioning method for the ramp assembly of the steel box arch rib of the beam arch bridge described above.

[0032] Those skilled in the art can understand that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0033] More specific examples (nonexhaustive list) of computer-readable media include the following: electrical connections (electronic devices) having one or more wirings, portable computer diskettes (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber devices, and portable compact disc read-only memory (CDROM). Additionally, the computer-readable media can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing it as appropriate, and then storing it in a computer memory.

[0034] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0035] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The above-described embodiments merely represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A construction positioning method for assembling the slope of a steel box arch rib of a beam arch bridge, characterized in that: include: Establishing a multiple coordinate system for assembling the steel box arch rib slope, the multiple coordinate system includes the arch axis local coordinate system, the full bridge jacking space coordinate system and the earth three-dimensional coordinate system; Divide the steel box arch rib into segments to obtain a plurality of steel box arch rib segments, and then select measuring points for each of the steel box arch rib segments to obtain measuring points corresponding to each of the steel box arch rib segments, wherein each of the steel box arch rib segments corresponds to a plurality of different measuring points; Calculating the spatial positions of the measuring points according to the multiple coordinate systems to obtain coordinate values ​​of all the measuring points; Positioning the tire frame according to the coordinate values ​​of the measuring points, wherein the tire frame positioning is based on the arch rib design parameters; All the steel box arch rib segments are matched and spliced ​​according to the measuring points and the tire frame, and the matching and splicing are in accordance with the jacking construction order.

2. The construction positioning method for assembling the steel box arch rib slope of a beam arch bridge according to claim 1 is characterized in that: The steps of establishing a multiple coordinate system for assembling the steel box arch rib slope specifically include: Set the arch foot of the arch axis as the origin and the longitudinal slope of the bridge as the horizontal coordinate direction , the normal direction of the longitudinal slope of the bridge is set as the longitudinal coordinate direction , to establish the local coordinate system of the arch axis - ; Set the midpoint of the line connecting the arch feet of any two symmetrical arch ribs as the origin, and set the pushing direction as the horizontal coordinate direction. , set the horizontal direction of the slope as the vertical coordinate direction , the direction perpendicular to the pushing direction on the plane formed by the horizontal and vertical coordinate directions is set as the vertical coordinate direction , to establish - - Full bridge jacking space coordinate system; The horizontal coordinate direction of the full bridge push space coordinate system The projection on the horizontal ground is set as the horizontal coordinate direction , set the vertical direction of the horizontal ground upward as the vertical coordinate direction , set the transverse bridge direction as the vertical coordinate direction , to establish - - The three-dimensional coordinate system of the earth.

3. The construction positioning method for assembling the steel box arch rib slope of a beam arch bridge according to claim 1 is characterized in that: The step of dividing the steel box arch rib into segments to obtain a plurality of steel box arch rib segments specifically includes: The steel box arch rib is divided into a plurality of steel box arch rib segments, the splicing section of each of the steel box arch rib segments is perpendicular to the tangent direction of the arch axis, and each of the steel box arch rib segments includes two ports.

4. The method for assembling the steel box arch rib slope of a beam arch bridge according to claim 1 is characterized in that: The step of selecting measuring points for each of the steel box arch rib segments to obtain measuring points corresponding to each of the steel box arch rib segments specifically includes: After obtaining the steel box arch rib segment, the measuring points are selected and set at the center side of the bridge deck of the spliced ​​section of the steel box arch rib segment. Three measuring points are set at the end of each of the steel box arch rib segments. The six measuring points at the two ends are marked as , , and , , ; The measuring point selection specifically includes setting the arch axis measuring point and are two points whose distance from the port is fixed value t in the local coordinate system of the arch axis, and then pass through the arch axis measuring point and The vertical line of the arch axis is made into a vertical line, and the intersection points of the vertical line of the arch axis and the upper and lower edges of the cross section of the steel box arch rib segment are set as , and , .

5. The construction positioning method for assembling the steel box arch rib slope of a beam arch bridge according to claim 1 is characterized in that: The step of calculating the spatial positions of the measuring points according to the multiple coordinate systems to obtain the coordinate values ​​of all the measuring points specifically includes: The arch axis function of the steel box arch rib is established according to the arch axis local coordinate system. The arch axis function is specifically: ( ), the coordinates of any point M on the arch axis in the local coordinate system of the arch axis are as follows: ， ， in, and denote the abscissa and ordinate of any point M in the local coordinate system of the arch axis, respectively. It represents the angle between the tangent line of the arch axis at any point M and the horizontal coordinate direction of the local coordinate system of the arch axis; Get the slope between the longitudinal slope of the bridge body and the longitudinal slope of the top push under the bridge , to calculate the coordinates of any point M in the full-bridge jacking space coordinate system, the coordinates of any point M in the full-bridge jacking space coordinate system are as follows: ， in, , , They represent the horizontal, vertical and vertical coordinates of any point M in the full-bridge jacking space coordinate system, respectively. B stands for The distance between the axes of two steel box arch rib segments; The coordinates of all measuring points in the full-bridge jacking space coordinate system are as follows: ， in, Indicates the measuring point, , , They represent the horizontal, vertical and vertical coordinates of the measuring point in the full bridge jacking space coordinate system respectively. H represents the cross-sectional height of the steel box arch rib segment, W Indicates the cross-sectional width of the steel box arch rib segment; Get the longitudinal slope of the slope , calculate the coordinates of any point M in the three-dimensional coordinate system of the earth, the coordinates of any point M in the three-dimensional coordinate system of the earth are as follows: ， in, , , They represent the horizontal, vertical and vertical coordinates of any point M in the three-dimensional coordinate system of the earth respectively; Calculate the coordinates of the measuring point of the intersection of the vertical line of the arch axis and the upper and lower edges of the cross section of the steel box arch rib segment in the geodetic three-dimensional coordinate system. The coordinates of the measuring point of the intersection of the vertical line of the arch axis and the upper and lower edges of the cross section of the steel box arch rib segment in the geodetic three-dimensional coordinate system are as follows: ， in, , , The horizontal, vertical and vertical coordinates of the measuring point in the geodetic three-dimensional coordinate system respectively represent the intersection of the vertical line of the arch axis and the upper and lower edges of the cross section of the steel box arch rib segment.

6. The method for construction and positioning of the slope assembly of the steel box arch rib of a beam arch bridge according to claim 1 is characterized in that: The step of positioning the tire frame according to the coordinate values ​​of the measuring points specifically includes: Acquire actual steel box arch rib design parameters to adjust the tire frame bearing point and the lower edge measuring point of the steel box arch rib segment cross section, wherein the adjustment is used to determine whether the spatial coordinates of the tire frame bearing point and the lower edge measuring point of the steel box arch rib segment cross section in the full bridge jacking space coordinate system and the earth three-dimensional coordinate system meet the splicing accuracy threshold requirements in the actual steel box arch rib design parameters; A limit plate is arranged in the vertical coordinate direction of the full-bridge jacking space coordinate system, and the limit plate is used to limit the lateral deformation and movement of the steel box arch rib.

7. The method for construction and positioning of the slope assembly of the steel box arch rib of a beam arch bridge according to claim 1 is characterized in that: The step of matching and splicing all the steel box arch rib segments according to the measuring points and the tire frame specifically includes: The steel box arch rib is hoisted to the positioning frame and temporarily fixed. After the hoisting is completed, the positioning and re-measurement of each measuring point of the steel box arch rib segment is carried out. A plane is determined according to any three measuring points in the same steel box arch rib segment to determine whether the current surveying and mapping results and the actual calculation results meet the error range threshold in the actual steel box arch rib design parameters; All the steel box arch rib segments are positioned and installed according to the jacking construction sequence to complete the welding and assembly of the entire steel box arch rib.

8. A construction positioning system for assembling the steel box arch rib slope of a beam arch bridge, characterized in that: include: A coordinate establishment module is used to establish a multiple coordinate system for assembling the steel box arch rib slope, wherein the multiple coordinate system includes the arch axis local coordinate system, the full bridge jacking space coordinate system and the earth three-dimensional coordinate system; A segmentation point selection module is used to segment the steel box arch rib to obtain multiple steel box arch rib segments, and then select measurement points for each of the steel box arch rib segments to obtain measurement points corresponding to each of the steel box arch rib segments, each of which corresponds to multiple different measurement points; A coordinate calculation module, used for calculating the spatial positions of the measuring points according to the multiple coordinate systems to obtain the coordinate values ​​of all the measuring points; A tire frame positioning module, used for positioning the tire frame according to the coordinate values ​​of the measuring points, wherein the tire frame positioning is based on the arch rib design parameters; A matching and splicing module is used to match and splice all the steel box arch rib segments according to the measuring points and the tire frame, and the matching and splicing is carried out in a top-pushing construction order.

9. A storage medium, characterized in that: The storage medium stores one or more programs, which, when executed by the processor, implement the construction positioning method for assembling the slope of the steel box arch rib of a beam-arch bridge as described in any one of claims 1-7.

10. A computer device, characterized in that: The computer device comprises a memory and a processor, wherein: The memory is used to store computer programs; When the processor is used to execute the computer program stored in the memory, it implements the construction positioning method for assembling the slope of the steel box arch rib of a beam-arch bridge as described in any one of claims 1-7.

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