A construction method for cantilever cast reinforced concrete box arch bridge

Abstract

The invention discloses a construction method for a cantilever cast reinforced concrete box-type arch bridge with inclined stays, which comprises the following steps: obtaining arch bridge construction information, establishing a BIM model according to the arch bridge construction information; constructing according to the BIM model, anchoring a first box-type arch ring segment, obtaining a first anchoring cable force, obtaining a first anchoring error and first arch ring anchoring information; establishing a finite element model, establishing a first cable force influence matrix according to the first anchoring cable force and the first arch ring anchoring information, obtaining a second anchoring cable force through the first cable force influence matrix, and anchoring a second box-type arch ring segment; repeating steps S2 to S3 until the box-type arch ring is closed, performing concrete casting, and determining arch support information based on an optimization algorithm; updating the finite element model, performing load simulation, obtaining a load weak area, and performing load early warning for the load weak area; refining the arch bridge construction process, improving construction efficiency, improving the load bearing capacity of the arch bridge, and preventing the occurrence of dangerous bridge accidents.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and particularly relates to a construction method for a cable-stayed suspended cantilever cast reinforced concrete box arch bridge. Background Art

[0002] In recent years, many long-span reinforced concrete arch bridges have been built in China using the cantilever casting method. Compared with the cantilever assembly method in which the arch ring is divided into ribs transversely to the bridge axis and segments longitudinally to the bridge axis, the cantilever casting method has the advantages of good integrity of the arch ring and less construction land occupation. To reduce the bending moment of the arch ring in the cantilever stage and control the alignment of the arch ring, a cable-stayed suspension form of the tower with cable stays to hang the arch ring and anchor cables to balance the cable stays is usually adopted. At the same time, with the rapid development of computer technology, combining computer technology in bridge construction has become an important topic at present.

[0003] At present, Chinese invention with the publication number CN115992490A discloses a cable-stayed suspended cantilever casting construction method for a long-span concrete arch bridge. Although it realizes the purpose of safe and stable construction of the long-span concrete arch bridge, shortens the anchoring distance of the cable stays, thereby reducing the construction cost, strengthening the safety and stability of the arch ring, and increasing the span of the arch ring; however, it does not combine computer technology in construction, and the lack of intelligence in the construction process leads to low efficiency, requiring a large amount of manpower and material resources. Moreover, it does not precisely adjust the alignment of the arch ring, cannot fully meet the preset stress requirements of the arch bridge, and does not adjust the arch piers, so the load maximization of the arch bridge cannot be achieved. Summary of the Invention

[0004] The technical problem solved by the present invention is that the prior art does not combine computer technology in construction, the lack of intelligence in the construction process leads to low efficiency, requiring a large amount of manpower and material resources, and it does not precisely adjust the alignment of the arch ring, cannot fully meet the preset stress requirements of the arch bridge, and does not adjust the arch piers, so the load maximization of the arch bridge cannot be achieved.

[0005] To solve the above technical problems, the present invention provides a construction method for a cable-stayed suspended cantilever cast reinforced concrete box arch bridge, including the following steps:

[0006] Step S1, obtaining the construction information of the arch bridge and establishing a BIM model according to the construction information of the arch bridge;

[0007] Step S2, constructing the approach bridge structure, arch abutment, dividing pier, temporary pier, cable tower and cable crane system according to the BIM model, using the cable crane system to anchor the first box arch ring segment, obtaining the first anchor cable force, collecting the first anchoring image by the vision sensor on the cable tower, and obtaining the first anchoring error and the first arch ring anchoring information according to the first anchoring image;

[0008] Step S3: Establish a finite element model for the BIM model, establish a first cable force influence matrix based on the first fixed cable force and the first arch ring fixed anchor information, obtain the second fixed cable force through the first cable force influence matrix, and use the second fixed cable force to fix the second box - shaped arch ring segment;

[0009] Step S4: Repeat steps S2 - S3 until all the box - shaped arch ring segments are installed and the arch ring is closed. Then, pour concrete for the main arch ring, determine the pier information on the arch based on the finite element model using an optimization algorithm, and construct the main bridge through the pier information on the arch;

[0010] Step S5: After the construction is completed, update the finite element model, conduct a load simulation on the finite element model, obtain the load - weak areas, and issue load warnings for the load - weak areas;

[0011] As a preferred solution of the construction method of a cable - stayed suspension - casting reinforced concrete box - shaped arch bridge according to the present invention, wherein:

[0012] The specific steps of step S1 include the following steps:

[0013] Step S101: Obtain the arch bridge construction information, where the arch bridge construction information includes the arch bridge construction process, the arch bridge construction components, and the component installation positions. The arch bridge construction components include the arch bridge construction component name, the arch bridge construction component number, the arch bridge construction component size, and the arch bridge construction component installation method;

[0014] Step S102: Establish a BIM model according to the arch bridge construction information;

[0015] As a preferred solution of the construction method of a cable - stayed suspension - casting reinforced concrete box - shaped arch bridge according to the present invention, wherein:

[0016] The specific steps of step S2 include the following steps:

[0017] Step S201: Obtain the environmental information. According to the environmental information and the BIM model, obtain the installation coordinates of the arch bridge components, where the arch bridge components include the approach bridge structure, the arch seat, the dividing pier, the temporary pier, the cable - stayed tower, the cable - crane system, and the arch ring structure;

[0018] Step S202: Install the approach bridge structure and the arch seat according to the installation coordinates. The approach bridge structure includes the approach bridge pile foundation, the approach bridge cap, the approach bridge pier, and the approach bridge beam;

[0019] Step S203: Use the hoisting mechanism to install the dividing pier and the temporary pier according to the installation coordinates, pour the arch ring segment between the arch seat and the temporary pier, and use the hoisting mechanism to install the cable - stayed tower and the cable - crane system;

[0020] Step S204, fix and anchor the first box - shaped arch ring segment using the cable - suspended system, obtain the first cable - fixing force through the force sensors on the stay cables, and collect the first cable - fixing image using a vision sensor. Obtain the first arch - fixing information of the arch ring according to the first cable - fixing image using preset feature points and image recognition technology. The first arch - fixing information includes the coordinates of the end of the first arch ring, the height of the end of the first arch ring, and the linear angle of the first arch ring. Compare the first arch - fixing information with the BIM model to obtain the first cable - fixing error;

[0021] As a preferred embodiment of the construction method of a cable - stayed and buckled cantilever - cast reinforced concrete box - shaped arch bridge according to the present invention, wherein:

[0022] The step S3 specifically includes the following steps:

[0023] Step S301, establish a finite - element model according to the BIM model, and perform regional division on the arch - ring segments to obtain the regional numbers 001, 002, 003... of the arch - ring segments;

[0024] Step S302, obtain the cable - force - displacement function according to the first cable - fixing force and the first arch - fixing information of the arch ring. The cable - force - displacement function is used to describe the correlation between the cable force and the horizontal displacement of the first box - shaped arch - ring segment, obtain the cable - force influence factor, and establish the first cable - force influence matrix according to the cable - force influence factor. According to the cable - force - displacement function and the first cable - force influence matrix, obtain the first displacement influence matrix, and obtain the second cable - fixing force according to the first displacement influence matrix, and fix and anchor the second box - shaped arch - ring segment with the second cable - fixing force.

[0025] As a preferred embodiment of the construction method of a cable - stayed and buckled cantilever - cast reinforced concrete box - shaped arch bridge according to the present invention, wherein:

[0026] The step S4 specifically includes the following steps:

[0027] Step S401, repeat steps S2 - S3 until all the box - shaped arch - ring segments are installed, complete the closure of the arch ring, and perform concrete pouring on the main arch ring, and update the BIM model;

[0028] Step S402, obtain the preset strut information, where the preset strut information includes the number of preset struts, the spacing of preset struts, and the positions of preset struts. Obtain the preset maximum load value according to the preset strut information using the finite - element model, and obtain the strut state space according to the preset strut information , where n is the preset number of struts, l is the preset strut spacing, p is the preset strut position, obtain the reward function and penalty function for the strut state space, adjust the strut state space, obtain the penalty value of each strut state space using the penalty function, obtain the reward value of each strut state space using the reward function, and define the strut state space with the maximum reward value as the optimal strut state space;

[0029] Step S403, retrieve the optimal number of struts, optimal strut spacing, and optimal strut position of the optimal strut state space, and perform the main bridge construction according to the optimal number of struts, the optimal strut spacing, and the optimal strut position;

[0030] As a preferred solution of a construction method for a cable-stayed and suspended cantilever-cast reinforced concrete box arch bridge according to the present invention, wherein:

[0031] The step S5 specifically includes the following steps:

[0032] Step S501, after the arch bridge construction is completed, update the finite element model, and use finite element analysis to obtain the maximum load of the arch bridge, and set the simulated load value according to the maximum load of the arch bridge;

[0033] Step S502, apply the corresponding load to the finite element model in sequence according to the simulated load value to obtain the element prestress of each element, define the element with the element prestress greater than or equal to the element load critical value as the load-weak element, and define the area where the load-weak element is located as the load-weak area, obtain the area number of the load-weak area, obtain the area warning information of the load-weak area, the area warning information includes the area number, the weak element number, and the element load critical value, and perform load warning according to the area warning information;

[0034] As a preferred solution of a construction method for a cable-stayed and suspended cantilever-cast reinforced concrete box arch bridge according to the present invention, wherein:

[0035] ;

[0036] Wherein, R is the reward value, is the first reward coefficient, is the second reward coefficient, is the actual number of struts, is the preset number of struts, is the actual maximum load value, is the preset maximum load value, is a real number greater than zero;

[0037] As a preferred solution of a construction method for a cable-stayed and suspended cantilever-cast reinforced concrete box arch bridge according to the present invention, wherein:

[0038] ;

[0039] wherein, P is the penalty value, is the penalty coefficient, is the actual maximum load value, is the preset maximum load value, is a real number greater than zero;

[0040] As a preferred scheme of the construction method of the cable-stayed buckle hanging cantilever casting reinforced concrete box arch bridge described in the present invention, wherein:

[0041] The cable force influence factors include temperature, wind speed, cable duct length, tensioning angle, length of the buckling cable and installation angle of the arch ring segment.

[0042] Advantages of the present invention: The present invention establishes a BIM model for the arch bridge construction process and conducts arch bridge construction based on the BIM model, which is beneficial to understanding the construction process in real time, making timely adjustments, refining the arch bridge construction process, improving construction efficiency, shortening the construction period and understanding the construction cost.

[0043] Using finite element analysis and the cable force influence matrix to adjust the preset cable force is beneficial to ensuring the consistency between the arch line of the arch bridge and the designed arch line, ensuring the load-bearing capacity of the arch bridge, meeting the preset force requirements of the arch bridge, and optimizing the construction process.

[0044] Using an optimization algorithm to adjust the strut information, adjusting the number of struts, the spacing between struts and the position of struts, and constructing according to the optimized strut information can improve the load-bearing capacity of the arch bridge and save the cost of bridge struts to a certain extent.

[0045] Performing load simulation on the arch bridge after construction using finite element analysis to obtain the load weak areas and giving load warnings for the load weak areas is beneficial to understanding the structural force conditions of the arch bridge in detail and preventing the occurrence of bridge dangerous accidents. Description of the Drawings

[0046] Figure 1 It is a schematic diagram of the basic process of a construction method of a cable-stayed buckle hanging cantilever casting reinforced concrete box arch bridge provided by an embodiment of the present invention. Detailed Embodiments

[0047] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.

[0048] Embodiment, referring to Figure 1, which is an embodiment of the present invention, provides a construction method for a cable-stayed and suspended cantilever-cast reinforced concrete box arch bridge, characterized by including the following steps:

[0049] Step S1, obtain the construction information of the arch bridge, and establish a BIM model according to the arch bridge construction information;

[0050] Step S2, construct the approach bridge structure, arch abutment, dividing pier, temporary pier, cable tower and cable crane system according to the BIM model, fix and anchor the first box arch ring segment by using the cable crane system, and obtain the first cable anchoring force. Use the visual sensor on the tower to collect the first anchoring image, and obtain the first anchoring error and the first arch ring anchoring information according to the first anchoring image;

[0051] Step S3, establish a finite element model for the BIM model, establish a first cable force influence matrix according to the first cable anchoring force and the first arch ring anchoring information, obtain the second cable anchoring force through the first cable force influence matrix, and use the second cable anchoring force to fix and anchor the second box arch ring segment;

[0052] Step S4, repeat steps S2 to S3 until all the box arch ring segments are installed and the arch ring is closed. Pour concrete for the main arch ring, determine the information of the arch piers based on the finite element model according to the optimization algorithm, and construct the main bridge according to the information of the arch piers;

[0053] Step S5, after the construction is completed, update the finite element model, perform load simulation on the finite element model, obtain the load weak area, and conduct load warning for the load weak area.

[0054] In this embodiment, a BIM model is established for the arch bridge construction process, and the arch bridge construction is carried out based on the BIM model, which is beneficial to understanding the construction process in real time, adjusting in time, refining the arch bridge construction process, improving the construction efficiency, shortening the construction period and understanding the construction cost.

[0055] Using finite element analysis and cable force influence matrix to adjust the preset cable force is beneficial to ensuring the consistency between the arch line of the arch bridge and the designed arch line, ensuring the load-bearing capacity of the arch bridge, meeting the preset force requirements of the arch bridge, and optimizing the construction process.

[0056] Using the optimization algorithm to adjust the pier information, adjust the number of piers, the spacing between piers and the position of piers, and construct according to the optimized pier information, which can improve the load-bearing capacity of the arch bridge and save the cost of bridge piers to a certain extent.

[0057] Performing load simulation on the constructed arch bridge by using finite element analysis, obtaining the load weak area, and conducting load warning for the load weak area is beneficial to understanding the stress condition of the arch bridge structure in detail and preventing the occurrence of bridge dangerous accidents.

[0058] The specific steps of step S1 include the following steps:

[0059] Step S101: Obtain the construction information of the arch bridge. The construction information of the arch bridge includes the construction process of the arch bridge, the construction components of the arch bridge, and the installation positions of the components. The construction components of the arch bridge include the name of the construction component of the arch bridge, the number of the construction component of the arch bridge, the size of the construction component of the arch bridge, and the installation method of the construction component of the arch bridge.

[0060] Step S102: Establish a BIM model according to the construction information of the arch bridge.

[0061] In this embodiment, the BIM model is a building model established based on various relevant information data of a construction project of a building.

[0062] In this embodiment, establishing a BIM model for the construction process of the arch bridge and performing the construction of the arch bridge based on the BIM model is beneficial to understanding the construction progress in real time, making timely adjustments, refining the construction process of the arch bridge, improving the construction efficiency, shortening the construction period, and understanding the construction cost.

[0063] The specific steps of step S2 include the following steps:

[0064] Step S201: Obtain the environmental information. According to the environmental information and the BIM model, obtain the installation coordinates of the arch bridge components. The arch bridge components include the approach bridge structure, the arch abutment, the dividing pier, the temporary pier, the cable tower, the cable crane system, and the arch ring structure.

[0065] Step S202: Install the approach bridge structure and the arch abutment according to the installation coordinates. The approach bridge structure includes the approach bridge pile foundation, the approach bridge cap, the approach bridge pier, and the approach bridge beam.

[0066] Step S203: Use the hoisting mechanism to install the dividing pier and the temporary pier according to the installation coordinates, pour the arch ring segment between the arch abutment and the temporary pier, and use the hoisting mechanism to install the cable tower and the cable crane system.

[0067] Step S204: Use the cable crane system to anchor the first box-shaped arch ring segment, obtain the first anchor cable force through the force sensor on the stay cable, and use the vision sensor to collect the first anchoring image. According to the first anchoring image, use the preset feature points and image recognition technology to obtain the first arch ring anchoring information. The first arch ring anchoring information includes the coordinates of the end of the first arch ring, the height of the end of the first arch ring, and the linear angle of the first arch ring. Compare the first arch ring anchoring information with the BIM model to obtain the first anchoring error.

[0068] In this embodiment, using image recognition technology to obtain the first arch ring anchoring information according to the first anchoring image and obtaining the first anchoring difference according to the first arch ring anchoring information provides accurate and detailed data support for establishing the first cable force influence matrix.

[0069] Step S3 specifically includes the following steps:

[0070] Step S301: Establish a finite element model based on the BIM model, divide the arch ring segments into regions, and obtain the arch ring segment region numbers 001, 002, 003...

[0071] Step S302: Obtain the cable force-displacement function according to the first fixed cable force and the first arch ring fixed anchor information. The cable force-displacement function is used to describe the correlation between the cable force and the horizontal displacement of the first box arch ring segment. Obtain the cable force influence factor, establish the first cable force influence matrix according to the cable force influence factor, obtain the first displacement influence matrix according to the cable force-displacement function and the first cable force influence matrix, obtain the second fixed cable force according to the first displacement influence matrix, and fix the second box arch ring segment with the second fixed cable force.

[0072] In this embodiment, using finite element analysis and the cable force influence matrix to adjust the preset cable force is beneficial to ensuring the consistency between the arch shape of the arch bridge and the designed arch shape, ensuring the load-bearing capacity of the arch bridge, meeting the preset stress requirements of the arch bridge, and optimizing the construction process.

[0073] Step S4 specifically includes the following steps:

[0074] Step S401: Repeat steps S2 to S3 until all the box arch ring segments are installed, complete the closure of the arch ring, and perform concrete pouring on the main arch ring, and update the BIM model;

[0075] Step S402: Obtain the preset strut information, where the preset strut information includes the preset number of struts, the preset strut spacing, and the preset strut position. Obtain the preset maximum load value according to the preset strut information using the finite element model, and obtain the strut state space. where n is the preset number of struts, l is the preset strut spacing, p is the preset strut position, obtain the reward function and penalty function of the strut state space, adjust the strut state space, obtain the penalty value of each strut state space using the penalty function, obtain the reward value of each strut state space using the reward function, and define the strut state space with the maximum reward value as the optimal strut state space;

[0076] Step S403: Retrieve the optimal number of struts, the optimal strut spacing, and the optimal strut position of the optimal strut state space, and perform the construction of the main bridge according to the optimal number of struts, the optimal strut spacing, and the optimal strut position.

[0077] In this embodiment, an optimization algorithm is used to adjust the strut information, including the number of struts, the spacing between struts, and the positions of struts. Construction is carried out according to the optimized strut information, which improves the load-bearing capacity of the arch bridge and saves the cost of bridge struts to a certain extent.

[0078] Step S5 specifically includes the following steps:

[0079] Step S501: After the construction of the arch bridge is completed, update the finite element model, and use finite element analysis to obtain the maximum load of the arch bridge. Set the simulated load value according to the maximum load of the arch bridge.

[0080] Step S502: Apply corresponding loads to the finite element model in sequence according to the simulated load value to obtain the element prestress of each element. Define the elements with element prestress greater than or equal to the element load critical value as load-weak elements, and define the area where the load-weak elements are located as the load-weak area. Obtain the area number of the load-weak area to get the area warning information of the load-weak area. The area warning information includes the area number, the weak element number, and the element load critical value, and perform load warning according to the area warning information.

[0081] In this embodiment, load simulation is carried out on the constructed arch bridge using finite element analysis to obtain the load-weak area, and load warning is performed on the load-weak area, which is beneficial to understanding the stress condition of the arch bridge structure in detail and preventing the occurrence of bridge dangerous accidents.

[0082] The calculation expression of the reward function is as follows:

[0083] ;

[0084] where R is the reward value, is the first reward coefficient, is the second reward coefficient, is the actual number of struts, is the preset number of struts, is the actual maximum load value, is the preset maximum load value, is a real number greater than zero.

[0085] In this embodiment, by setting the reward function and using the reward function to obtain the reward values of each strut state space, it provides a data basis for adjusting the strut state space and obtaining the optimal state space.

[0086] The calculation expression of the penalty function is as follows:

[0087] ;

[0088] where P is the penalty value, is the penalty coefficient, is the actual maximum load value, is the preset maximum load value, is a real number greater than zero.

[0089] In this embodiment, by setting a penalty function and using the penalty function to obtain the penalty values of each strut state space, it provides a data basis for adjusting the strut state space and obtaining the optimal state space.

[0090] The cable force influence factors include temperature, wind speed, cable duct length, tensioning angle, stay cable length, and arch ring segment installation angle.

[0091] In this embodiment, by obtaining the cable force influence factors, it provides detailed influence factors for establishing the first cable force influence matrix, ensuring the integrity of the first cable force influence matrix and the accuracy of the preset second fixed stay cable force.

[0092] In this implementation, a BIM model is established for the arch bridge construction process, and the arch bridge construction is carried out based on the BIM model, which is beneficial to understanding the construction process in real time, making timely adjustments, refining the arch bridge construction process, improving construction efficiency, shortening the construction period, and understanding the construction cost.

[0093] Using finite element analysis and the cable force influence matrix to adjust the preset cable force is beneficial to ensuring the consistency between the arch bridge arch ring alignment and the designed arch ring alignment, ensuring the load-bearing capacity of the arch bridge, meeting the preset force requirements of the arch bridge, and optimizing the construction process.

[0094] Using an optimization algorithm to adjust the strut information, adjusting the number of struts, the strut spacing, and the strut position, and constructing according to the optimized strut information can improve the load-bearing capacity of the arch bridge and save the cost of bridge struts to a certain extent.

[0095] Performing load simulation on the constructed arch bridge using finite element analysis to obtain the load weak areas and giving load warnings for the load weak areas is beneficial to understanding the structural force conditions of the arch bridge in detail and preventing the occurrence of bridge dangerous accidents.

[0096] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media that contain computer-usable program code. Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, and the instruction device implements the functions specified in one process Figure 1 one process or multiple processes and / or boxes Figure 1 specified in one box or multiple boxes.

[0097] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A construction method for a cantilever cast reinforced concrete box arch bridge, characterized in that: The following steps are involved: Step S1, obtaining arch bridge construction information, and establishing a BIM model according to the arch bridge construction information; Step S2, constructing the approach bridge structure, arch seat, boundary pier, temporary pier, buckle tower and cable hanging system according to the BIM model, anchoring the first box-type arch ring segment by using the cable hanging system, and obtaining the first anchoring cable force, collecting the first anchoring image by using the visual sensor on the tower, and obtaining the first anchoring error and the first arch ring anchoring information according to the first anchoring image; Step S3, establishing a finite element model for the BIM model, establishing a first cable force influence matrix according to the first anchor cable force and the first arch ring anchor information, obtaining the second anchor cable force through the first cable force influence matrix, and anchoring the second box-type arch ring segment with the second anchor cable force; Step S4, repeating steps S2 to S3 until all the box-type arch ring segments are installed and the arch ring is closed, pouring concrete on the main arch ring, and determining the arch support information based on the finite element model based on the optimization algorithm, and constructing the main bridge based on the arch support information; Step S5, after the construction is completed, the finite element model is updated, load simulation is performed on the finite element model, load weak areas are obtained, and load early warning is performed for the load weak areas; The step S2 specifically includes the following steps: Step S201, obtaining environmental information, and obtaining installation coordinates of arch bridge components according to the environmental information and the BIM model, wherein the arch bridge components include approach bridge structure, arch seat, boundary pier, temporary buttress, buckle tower, cable suspension system and arch ring structure; Step S202, installing the approach bridge structure and the abutment according to the installation coordinates, wherein the approach bridge structure includes an approach bridge pile foundation, an approach bridge cap, an approach bridge pier and an approach bridge; Step S203, using a lifting mechanism to install the boundary pier and the temporary buttress according to the installation coordinates, and casting the arch ring segment between the arch seat and the temporary buttress, and using the lifting mechanism to install the buckle tower and the cable hanging system; Step S204, using a cable hanger system to anchor the first box-type arch ring segment, obtaining the first anchoring cable force through the force sensor on the inclined cable, and using a visual sensor to capture a first anchoring image, and obtaining the first arch ring anchoring information based on the first anchoring image using preset feature points and image recognition technology. The first arch ring anchoring information includes the first arch ring end coordinates, the first arch ring end height and the first arch ring linear angle. The first arch ring anchoring information is compared with the BIM model to obtain the first anchoring error.

2. The method for constructing a cantilever cast reinforced concrete box arch bridge by inclined stay buckle hanging according to claim 1, characterized in that: The step S1 specifically includes the following steps: Step S101, obtaining arch bridge construction information, wherein the arch bridge construction information includes arch bridge construction process, arch bridge construction components and component installation positions, wherein the arch bridge construction components include arch bridge construction component names, arch bridge construction component numbers, arch bridge construction component sizes and arch bridge construction component installation methods; Step S102: establishing a BIM model according to the arch bridge construction information.

3. The method for constructing a cantilever cast reinforced concrete box arch bridge by inclined-stayed buckle hanging according to claim 1, characterized in that: The step S3 specifically comprises the following steps: Step S301, establishing a finite element model according to the BIM model, and performing regional division on the arch ring segments to obtain arch ring segment regional numbers 001, 002, 003, ...; Step S302, obtaining a cable force-displacement function according to the first anchoring cable force and the first arch ring anchoring information, wherein the cable force-displacement function is used to describe the correlation between the cable force and the horizontal displacement of the first box-type arch ring segment, obtaining a cable force influence factor, and establishing a first cable force influence matrix according to the cable force influence factor, obtaining a first displacement influence matrix according to the cable force-displacement function and the first cable force influence matrix, and obtaining a second anchoring cable force according to the first displacement influence matrix, and anchoring the second box-type arch ring segment by the second anchoring cable force.

4. The method for constructing a cantilever cast reinforced concrete box arch bridge by inclined stay buckle hanging according to claim 1, characterized in that: The step S4 specifically comprises the following steps: Step S401, repeating steps S2 to S3 until all the box-type arch ring segments are installed, the arch ring is closed, and the main arch ring is poured with concrete, and the BIM model is updated; Step S402, obtaining preset pillar information, wherein the preset pillar information includes the preset pillar quantity, preset pillar spacing and preset pillar position, obtaining the preset maximum load value using the finite element model according to the preset pillar information, and obtaining the pillar state space according to the preset pillar information , where n is the preset number of pillars, l is the preset pillar spacing, and p is the preset pillar position, obtaining a reward function and a penalty function of a pillar state space, adjusting the pillar state space, obtaining a penalty value of each pillar state space using the penalty function, obtaining a reward value of each pillar state space using the reward function, and defining the pillar state space with the largest reward value as the optimal pillar state space; Step S403, retrieve the optimal number of pillars, optimal pillar spacing and optimal pillar positions in the optimal pillar state space, and construct the main bridge according to the optimal number of pillars, the optimal pillar spacing and the optimal pillar positions.

5. The method for constructing a cantilever cast reinforced concrete box arch bridge by inclined-stayed buckle hanging according to claim 1, characterized in that: The step S5 specifically comprises the following steps: Step S501, after the construction of the arch bridge is completed, the finite element model is updated, and the maximum load of the arch bridge is obtained by finite element analysis, and the simulation load value is set according to the maximum load of the arch bridge; Step S502, applying corresponding loads to the finite element model in sequence according to the simulated load values ​​to obtain the unit prestress of each unit, defining the unit whose unit prestress is greater than or equal to the unit load critical value as a load-weak unit, and defining the area where the load-weak unit is located as a load-weak area, obtaining the area number of the load-weak area, obtaining the area warning information of the load-weak area, the area warning information including the area number, the weak unit number and the unit load critical value, and performing a load warning according to the area warning information.

6. The method for constructing a cantilever cast reinforced concrete box arch bridge by inclined stay buckle hanging as claimed in claim 4, characterized in that: The calculation expression of the reward function is as follows: ； Among them, R is the reward value, is the first reward coefficient, is the second reward coefficient, is the actual number of pillars, To preset the number of pillars, is the actual maximum load value, is the preset maximum load value, is a real number greater than zero.

7. The method for constructing a cantilever cast reinforced concrete box arch bridge by inclined stay buckle hanging as claimed in claim 4, characterized in that: The calculation expression of the penalty function is as follows: ； Among them, P is the penalty value, is the penalty coefficient, is the actual maximum load value, is the preset maximum load value, is a real number greater than zero.

8. The method for constructing a cantilever cast reinforced concrete box arch bridge by inclined stay buckle hanging as claimed in claim 3, characterized in that: The cable force influencing factors include temperature, wind speed, cable tube length, tensioning angle, cable length and arch ring segment installation angle.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for constructing a cable-stayed, cantilever-cast reinforced concrete box-type arch bridge described in any one of claims 1 to 8 is implemented.

Images