Linear monitoring method, device, equipment and product for construction process of cable-stayed bridge

Abstract

The application relates to the technical field of bridge construction, and provides a linear monitoring method, device, equipment and product for the construction process of a cable-stayed bridge, which comprises the following steps: obtaining a three-dimensional virtual bridge body model of the cable-stayed bridge and extracting the three-dimensional features of the cable-stayed bridge in the three-dimensional virtual bridge body model; adding virtual constraints to the three-dimensional virtual bridge body model based on the three-dimensional features of the cable-stayed bridge; executing a virtual construction strategy based on the three-dimensional virtual bridge body model after the virtual constraints are added, obtaining a linear prediction sample after the virtual construction strategy is executed; and optimizing the virtual construction strategy according to the linear prediction sample. The application combines traditional bridge construction with artificial intelligence algorithms, simulates the scene of the cable-stayed bridge in the construction process, collects and analyzes the stress changes of the three-dimensional virtual bridge body model according to the construction steps, can predict whether the linear changes of the cable-stayed bridge in the actual construction meet the construction requirements, greatly improves the safety and construction quality of the construction, and ensures the construction period.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a linear monitoring method, device, equipment and product for the construction process of cable-stayed bridges. Background Technology

[0002] With the rapid construction and development of high-speed railways, the safety requirements for railway line construction are becoming increasingly stringent, and the proportion of bridges in these lines is gradually increasing. To ensure that high-speed railway lines can cross special sections such as deep valleys and large rivers, a large number of long-span bridge structures, such as cable-stayed and suspension bridges, have been applied and developed in high-speed railway projects. Taking cable-stayed bridges as an example, due to their large span and flexible structure, they undergo extremely complex spatial deformations under external loads such as temperature and wind, which seriously affect the safety and speed of cable and bridge construction. How to use computer technology to simulate, analyze, and improve factors that do not meet safety requirements during the construction of cable-stayed bridges has become a key issue in ensuring construction quality. Summary of the Invention

[0003] This invention provides a linear monitoring method, device, equipment, and product for the construction process of cable-stayed bridges, which solves the defects in existing cable-stayed bridge construction processes, such as the inability to accurately predict the linear deformation of the bridge body, resulting in insufficient construction safety, delays in construction period, and impact on construction quality.

[0004] A linear monitoring method for the construction process of a cable-stayed bridge, according to a first aspect of the present invention, includes:

[0005] Obtain a three-dimensional virtual bridge model of the cable-stayed bridge and extract the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model;

[0006] Based on the three-dimensional features of the cable-stayed bridge, virtual constraints are added to the three-dimensional virtual bridge model;

[0007] Based on the three-dimensional virtual bridge model with the added virtual constraints, a virtual construction strategy is executed, and linear prediction samples are obtained after the virtual construction strategy is executed.

[0008] The virtual construction strategy is optimized based on the linear prediction samples.

[0009] According to one embodiment of the present invention, the extraction of the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model specifically includes:

[0010] Obtain the concrete main beam, steel main beam, bridge deck, pylon, stay cables, auxiliary piers, transition piers, main longitudinal beams, and sub-bridge decks corresponding to the main longitudinal beams from the three-dimensional virtual bridge model;

[0011] The three-dimensional features of the cable-stayed bridge are generated based on the concrete main beam, the steel main beam, the bridge deck, the pylon, the stay cables, the auxiliary piers, the transition piers, the main longitudinal beams, and the sub-bridge deck.

[0012] Specifically, this embodiment provides an implementation method for extracting the three-dimensional features of a cable-stayed bridge from the three-dimensional virtual bridge model.

[0013] According to one embodiment of the present invention, adding virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge specifically includes:

[0014] Obtain the concrete main girder, the steel main girder, the bridge deck, and the cable tower from the three-dimensional features of the cable-stayed bridge, and add beam constraints to the concrete main girder, the steel main girder, the bridge deck, and the cable tower;

[0015] Obtain the stay cables from the three-dimensional features of the cable-stayed bridge, and add truss constraints to the stay cables;

[0016] Obtain the auxiliary piers and transition piers from the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary piers and transition piers;

[0017] Obtain the main longitudinal beam and the sub-bridge deck from the three-dimensional features of the cable-stayed bridge, and add elastic constraints to the main longitudinal beam and the sub-bridge deck.

[0018] Specifically, this embodiment provides an implementation method for adding virtual constraints to the three-dimensional virtual bridge model.

[0019] According to one embodiment of the present invention, adding fixed constraints to the auxiliary pier and the transition pier specifically includes:

[0020] Obtain the first top feature of the auxiliary pier and the second top feature of the transition pier, wherein the first top feature is the connection position feature between the auxiliary pier and the concrete main beam or the steel main beam, and the second top feature is the connection position feature between the transition pier and the concrete main beam or the steel main beam;

[0021] Add vertical displacement constraints and transverse bridge line displacement constraints to the first top feature and the second top feature;

[0022] The transverse bridge linear displacement constraint is a single-sided support constraint.

[0023] Specifically, this embodiment provides an implementation method for adding fixed constraints to the auxiliary pier and the transition pier.

[0024] According to one embodiment of the present invention, adding beam constraints to the cable tower specifically includes:

[0025] The height characteristics of the cable towers are obtained, and a first cable tower and a second cable tower are determined based on the height characteristics, wherein the height of the first cable tower is greater than the height of the second cable tower;

[0026] Add vertical linear displacement constraints, longitudinal linear displacement constraints, and transverse linear displacement constraints to the first cable tower;

[0027] Add vertical linear displacement constraints and transverse linear displacement constraints to the second cable tower;

[0028] Among them, the transverse bridge linear displacement constraints are all single-sided support constraints.

[0029] Specifically, this embodiment provides an implementation method for adding beam constraints to the cable tower.

[0030] According to one embodiment of the present invention, the execution of the virtual construction strategy specifically includes:

[0031] After adding the virtual constraints based on the three-dimensional virtual bridge model, the cable-stayed bridge is adjusted, and the first linear difference between the first tower and the second tower is obtained.

[0032] Based on the change of the first linear difference within the first difference change threshold range, a constant load is added to the load position of the cable-stayed bridge, and a second linear difference of the load position after the constant load is applied is obtained.

[0033] Repeat the above steps to obtain N second linear differences, where N is a positive integer greater than or equal to 1, and generate the linear prediction sample based on the second linear differences.

[0034] Specifically, this embodiment provides an implementation method for executing a virtual construction strategy during the construction process.

[0035] According to one embodiment of the present invention, optimizing the virtual construction strategy based on the linear prediction samples specifically includes:

[0036] Based on the fact that the second linear difference is outside the second difference change threshold range, adjust the virtual constraints and / or constant loads added to the three-dimensional virtual bridge model, and re-execute the virtual construction strategy.

[0037] Specifically, this embodiment provides an implementation method for optimizing the virtual construction strategy based on the linear prediction samples.

[0038] According to a second aspect of the present invention, a linear monitoring device for the construction process of a cable-stayed bridge includes:

[0039] The feature acquisition module is used to acquire a three-dimensional virtual bridge model of the cable-stayed bridge and extract the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model.

[0040] The constraint addition module is used to add virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge.

[0041] The strategy execution module is used to execute a virtual construction strategy based on the three-dimensional virtual bridge model after adding the virtual constraints, and to obtain linear prediction samples after executing the virtual construction strategy.

[0042] The strategy optimization module is used to optimize the virtual construction strategy based on the linear prediction samples.

[0043] An electronic device according to a third aspect of the present invention includes: a memory and a processor;

[0044] The memory and the processor communicate with each other via a bus;

[0045] The memory stores computer instructions that can be executed on the processor;

[0046] When the processor invokes the computer instructions, it can execute the linear monitoring method for the cable-stayed bridge construction process described above.

[0047] According to a fourth aspect of the present invention, a computer program product includes a non-transitory machine-readable medium storing a computer program, which, when executed by a processor, implements the steps of the linear monitoring method for the construction process of a cable-stayed bridge described above.

[0048] The above-mentioned one or more technical solutions of the present invention have at least one of the following technical effects: The linear monitoring method, device, equipment and product for the construction process of cable-stayed bridge provided by the present invention combines traditional bridge construction with artificial intelligence algorithms to establish a three-dimensional virtual bridge model of the cable-stayed bridge, and adds virtual constraints existing in the construction to the three-dimensional virtual bridge model to simulate the scenario of the cable-stayed bridge in the construction process. According to the construction steps, the stress changes of the three-dimensional virtual bridge model are collected and analyzed, which can predict whether the linear changes of the cable-stayed bridge in the actual construction meet the construction requirements, greatly improve the safety and quality of construction, and ensure the construction period. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the three-dimensional virtual bridge model of the cable-stayed bridge provided by the present invention.

[0051] Figure 2 This is a flowchart illustrating the linear monitoring method for the construction process of a cable-stayed bridge provided by the present invention.

[0052] Figure 3 This is a schematic diagram of cable adjustment parameters in the linear monitoring method for the construction process of a cable-stayed bridge provided by the present invention.

[0053] Figure 4 This is a schematic diagram of the predicted linearity of the completed bridge after cable adjustment in the linear monitoring method for the construction process of a cable-stayed bridge provided by the present invention.

[0054] Figure 5 This is a schematic diagram of the main body deflection under constant load in the linear monitoring method for the construction process of cable-stayed bridges provided by this invention.

[0055] Figure 6 This is a schematic diagram of the main deflection of the completed bridge in the linear monitoring method for the construction process of cable-stayed bridges provided by the present invention.

[0056] Figure 7 This is one of the linear diagrams for predicting bridge completion under dead load in the linear monitoring method for the construction process of cable-stayed bridges provided by this invention.

[0057] Figure 8 This is the second linear schematic diagram of the predicted bridge completion under constant load in the linear monitoring method for the construction process of cable-stayed bridges provided by this invention.

[0058] Figure 9 This is a schematic diagram of the linear monitoring device for the construction process of a cable-stayed bridge provided by the present invention.

[0059] Figure 10 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0060] Figure label:

[0061] 10. Concrete main beam; 20. Steel main beam; 30. Cable tower; 40. Stay cables; 50. Auxiliary piers; 60. Transition piers;

[0062] 100. Feature Acquisition Module; 200. Constraint Addition Module; 300. Policy Execution Module; 400. Policy Optimization Module;

[0063] 810, Processor; 820, Communication interface; 830, Memory; 840, Communication bus. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] The present invention will now be described in detail with reference to the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments. In the description of the present invention, unless otherwise stated, "at least one" includes one or more. "Multiple" refers to two or more. For example, at least one of A, B, and C includes: A existing alone, B existing alone, A and B existing simultaneously, A and C existing simultaneously, B and C existing simultaneously, and A, B, and C existing simultaneously. In the present invention, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0066] The present invention will now be described in detail with reference to specific embodiments.

[0067] In some specific embodiments of the present invention, such as Figures 1 to 8 As shown, this solution provides a linear monitoring method for the construction process of a cable-stayed bridge, including:

[0068] Obtain a three-dimensional virtual bridge model of the cable-stayed bridge and extract the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model;

[0069] Based on the three-dimensional features of cable-stayed bridges, virtual constraints are added to the three-dimensional virtual bridge model;

[0070] Based on the 3D virtual bridge model with added virtual constraints, a virtual construction strategy is executed, and linear prediction samples are obtained after the virtual construction strategy is executed.

[0071] The virtual construction strategy is optimized based on linear prediction samples.

[0072] In a possible embodiment, the cable-stayed bridge railway line provided by the present invention is designed as a four-track railway with a track spacing of (6+5+6) m. The middle double track is the main line, and the two sides are reserved double tracks. The middle two tracks are designed for a speed of 350 km / h, and the two sides are reserved for a speed of 160 km / h.

[0073] In some possible embodiments of the present invention, extracting the three-dimensional features of a cable-stayed bridge from a three-dimensional virtual bridge model specifically includes:

[0074] Obtain the concrete main beam 10, steel main beam 20, bridge deck, pylon 30, cable stay 40, auxiliary pier 50, transition pier 60, main longitudinal beam, and sub-bridge deck corresponding to the main longitudinal beam from the three-dimensional virtual bridge model;

[0075] The three-dimensional features of the cable-stayed bridge are generated based on the concrete main beam 10, steel main beam 20, bridge deck, pylon 30, stay cables 40, auxiliary piers 50, transition piers 60, main longitudinal beams, and sub-bridge decks.

[0076] Specifically, this embodiment provides an implementation method for extracting the three-dimensional features of a cable-stayed bridge from a three-dimensional virtual bridge model. By combining the stress conditions during the construction of the cable-stayed bridge, the main stress locations and stress points of the three-dimensional virtual bridge model are obtained, and the three-dimensional features of the cable-stayed bridge are generated. While simulating the external dimensions of the cable-stayed bridge through the three-dimensional virtual bridge model, it is also possible to simulate the construction scenario of the cable-stayed bridge by adding constraints to each part of the three-dimensional virtual bridge model, so as to accurately predict the actual linear changes of the cable-stayed bridge through the three-dimensional virtual bridge model.

[0077] In some possible embodiments of the present invention, virtual constraints are added to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge, specifically including:

[0078] Obtain the concrete main girder 10, steel main girder 20, bridge deck and pylon 30 from the three-dimensional features of the cable-stayed bridge, and add beam constraints to the concrete main girder 10, steel main girder 20, bridge deck and pylon 30;

[0079] Obtain cable 40 from the 3D features of the cable-stayed bridge, and add truss constraints to cable 40;

[0080] Obtain the auxiliary pier 50 and transition pier 60 from the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary pier 50 and transition pier 60;

[0081] Obtain the main longitudinal beams and sub-bridge decks from the 3D features of the cable-stayed bridge, and add elastic constraints to the main longitudinal beams and sub-bridge decks.

[0082] Specifically, this embodiment provides an implementation method for adding virtual constraints to a three-dimensional virtual bridge model. Based on the actual situation of different stress locations in the three-dimensional features of the cable-stayed bridge, corresponding constraints are added so that the three-dimensional virtual bridge model can more realistically reflect the stress changes of the cable-stayed bridge during construction, thereby achieving linear monitoring of the cable-stayed bridge construction process and ensuring construction safety and quality.

[0083] It should be noted that the stress environment of the concrete main beam 10, steel main beam 20, bridge deck, pylon 30, stay cable 40, auxiliary pier 50, transition pier 60, main longitudinal beam and sub-bridge deck are not the same in the actual environment. Therefore, by adding different forms of constraints to different positions of the three-dimensional virtual bridge model, the stress condition of the cable-stayed bridge in the actual working condition is simulated, making the results of linear monitoring of the cable-stayed bridge closer to the real value.

[0084] In a possible embodiment, during the process of adding constraints to the three-dimensional virtual bridge model, the bottom of the pylon 30, auxiliary pier 50, and transition pier 60 are completely fixed.

[0085] In some possible embodiments of the present invention, fixed constraints are added to the auxiliary pier 50 and the transition pier 60, specifically including:

[0086] The first top feature of the auxiliary pier 50 and the second top feature of the transition pier 60 are obtained. The first top feature is the connection position feature between the auxiliary pier 50 and the concrete main beam 10 or the steel main beam 20, and the second top feature is the connection position feature between the transition pier 60 and the concrete main beam 10 or the steel main beam 20.

[0087] Add vertical displacement constraints and transverse bridge line displacement constraints to the first and second top features;

[0088] Among them, the transverse bridge linear displacement constraint is a single-sided support constraint.

[0089] Specifically, this embodiment provides an implementation method for adding fixed constraints to the auxiliary pier 50 and the transition pier 60. The constraints added to the auxiliary pier 50 and the transition pier 60 are set as fixed constraints according to the actual situation. At the same time, vertical displacement constraints and transverse bridge line displacement constraints are added to the first top feature of the auxiliary pier 50 and the second top feature of the transition pier 60 to simulate the stress situation of the auxiliary pier 50 and the transition pier 60 in the actual working conditions of the cable-stayed bridge.

[0090] In some possible embodiments of the present invention, beam constraints are added to the tower 30, specifically including:

[0091] Obtain the height characteristics of tower 30, and determine the first tower and the second tower based on the height characteristics. The height of the first tower is greater than the height of the second tower.

[0092] Add vertical linear displacement constraints, longitudinal linear displacement constraints, and transverse linear displacement constraints to the first cable tower;

[0093] Add vertical linear displacement constraints and transverse linear displacement constraints to the second cable tower;

[0094] Among them, the transverse bridge linear displacement constraints are all single-sided support constraints.

[0095] Specifically, this embodiment provides an implementation method for adding beam constraints to the pylon 30. The cable-stayed bridge of the present invention has two pylons 30 with different heights, namely the first pylon and the second pylon. Due to the different heights, the two pylons 30 have different stresses and deformations. Therefore, it is necessary to add constraints to the two pylons 30 with different heights to more closely approximate the actual situation. For example, vertical linear displacement constraints, longitudinal linear displacement constraints, and transverse linear displacement constraints are added to the first pylon, which is taller. Therefore, the pylon 30 is taller and its deformation is larger when subjected to vertical displacement, longitudinal displacement, and transverse displacement, while the second pylon, which is shorter, only needs to be constrained in terms of linear displacement in the vertical and transverse directions.

[0096] In some possible embodiments of the present invention, implementing a virtual construction strategy specifically includes:

[0097] With virtual constraints added to the 3D virtual bridge model, cable adjustment operation is performed on the cable-stayed bridge's cable-stayed cable 40, and the first linear difference between the first tower and the second tower is obtained.

[0098] Based on the change of the first linear difference within the first difference change threshold range, a dead load is added to the load position of the cable-stayed bridge, and a second linear difference of the load position after the dead load is applied is obtained.

[0099] Repeat the above steps to obtain N second linear differences, where N is a positive integer greater than or equal to 1, and generate linear prediction samples based on the second linear differences.

[0100] Specifically, this embodiment provides an implementation method for executing a virtual construction strategy. During the construction process, such as... Figure 3 and Figure 4 As shown, this is mainly reflected in the adjustment of the cable-stayed bridge 40. During the adjustment of the first tower and the second tower respectively, the first linear difference between the first tower and the second tower is obtained. When the change of the first linear difference is within the first difference change threshold, the load position of the cable-stayed bridge is added with a dead load, and the second linear difference of the cable-stayed bridge after the dead load is added is obtained. The above steps are repeated to obtain N second linear differences, and then linear prediction samples are obtained.

[0101] It should be noted that the adjustment of cable 40 is also related to the number of mileages. Different mileage settings have different effects on the parameters of cable 40. Therefore, during the process, mileage constraints can be added to simulate the construction and operation environment of the cable-stayed bridge, so as to improve the safety and construction quality of the cable-stayed bridge.

[0102] Furthermore, Figure 3 , Figures 5 to 7 The mileage in the figure represents the mileage corresponding to the location of the cable-stayed bridge within the entire route.

[0103] In possible embodiments, such as Figure 3 As shown, MD is the second tower and MG is the first tower. After the main bridge was closed, the first cable adjustment was carried out based on the actual alignment and cable tension test results. The alignment changes during the first cable adjustment process and the predicted final bridge alignment are shown below. Figure 3 As shown, the working conditions before cable adjustment are as follows: the wet joint on the side of the short tower is poured to MD2, and the wet joint on the side of the tall tower is poured to MG11; the working conditions after cable adjustment are completed are as follows: the wet joint on the side of the short tower is poured to MD6, and the wet joint on the side of the tall tower is poured to MG11.

[0104] In a possible embodiment, the calculation of the first linear difference can be obtained by the predicted later displacement after cable adjustment, the predicted bridge linearity, and the combined calculation with the design linear difference. To save space, this invention does not elaborate on this. In practical applications, the relevant design standards for cable-stayed bridges can be referred to.

[0105] In a possible embodiment, if the change of the first linear difference is outside the range of the first difference change threshold, it is considered that it may be due to the influence of environmental temperature and other factors. Therefore, the virtual environmental temperature of the three-dimensional virtual bridge model can be adjusted so as to adjust the change of the first linear difference to the range of the first difference change threshold.

[0106] In a possible embodiment, the dead load addition process is carried out based on a four-line ballastless track, with a total dead load design value of 237 kN / m, mainly including:

[0107] 1) Bridge deck protective layer: 28kN / m;

[0108] 2) Retaining wall + vertical wall + cover plate + guardrail: 35kN / m;

[0109] 3) Base plate (4 wires): 62kN / m;

[0110] 4) Self-compacting concrete between the base plate and the track slab (4 lines): 36kN / m;

[0111] 5) Track slab (4 lines) (including track base): 60kN / m;

[0112] 6) Other (cables, contact wires, tracks, etc.): 16kN / m.

[0113] In some possible embodiments of the present invention, the virtual construction strategy is optimized based on linear prediction samples, specifically including:

[0114] Based on the fact that the second linear difference is outside the second difference change threshold range, adjust the virtual constraints and / or dead loads added to the three-dimensional virtual bridge model, and re-execute the virtual construction strategy.

[0115] Specifically, this embodiment provides an implementation method for optimizing virtual construction strategies based on linear prediction samples, such as... Figures 5 to 8 As shown, if the second linear difference is outside the range of the second difference change threshold, it may be due to improper virtual constraints and / or constant loads added to the three-dimensional virtual bridge model. Therefore, the parameters should be readjusted so that the obtained second linear difference is within the range of the second difference change threshold.

[0116] In a possible embodiment, the calculation of the second linear difference can be obtained by calculating the beam deflection after applying the dead load and the linear prediction of the completed bridge. To save space, this invention does not elaborate on this. In practical applications, the relevant design standards for cable-stayed bridges can be referred to.

[0117] It should be noted that the linear prediction of the completed bridge includes the current measured elevation of the bridge deck, the bridge deck elevation after the current load is removed, after the paving of retaining walls and other structures, after the construction of the base plate, and after the construction of the bridge deck protective layer. At the same time, it also monitors the locations of different beam numbers, providing data support for the linear monitoring of cable-stayed bridges.

[0118] In a possible embodiment, the second linear difference is outside the second difference change threshold range. Considering that it may also be affected by factors such as ambient temperature, the virtual ambient temperature of the three-dimensional virtual bridge model can be adjusted so that the change of the second linear difference is adjusted to the range of the first difference change threshold.

[0119] In some specific embodiments of the present invention, such as Figure 9 As shown, this solution provides a linear monitoring device for the construction process of a cable-stayed bridge, including:

[0120] The feature acquisition module 100 is used to acquire a three-dimensional virtual bridge model of the cable-stayed bridge and extract the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model.

[0121] The constraint addition module 200 is used to add virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge.

[0122] The strategy execution module 300 is used to execute a virtual construction strategy based on the three-dimensional virtual bridge model with added virtual constraints, and to obtain linear prediction samples after the virtual construction strategy has been executed.

[0123] The strategy optimization module 400 is used to optimize the virtual construction strategy based on the linear prediction samples.

[0124] Possibly, extracting the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model, specifically including:

[0125] Obtain the concrete main beam 10, steel main beam 20, bridge deck, pylon 30, cable stay 40, auxiliary pier 50, transition pier 60, main longitudinal beam, and sub-bridge deck corresponding to the main longitudinal beam from the three-dimensional virtual bridge model;

[0126] The three-dimensional features of the cable-stayed bridge are generated based on the concrete main beam 10, steel main beam 20, bridge deck, pylon 30, stay cables 40, auxiliary piers 50, transition piers 60, main longitudinal beams, and sub-bridge decks.

[0127] Specifically, this embodiment provides an implementation method for extracting the three-dimensional features of a cable-stayed bridge from a three-dimensional virtual bridge model.

[0128] It is possible that, based on the three-dimensional features of a cable-stayed bridge, virtual constraints can be added to the three-dimensional virtual bridge model, specifically including:

[0129] Obtain the concrete main girder 10, steel main girder 20, bridge deck and pylon 30 from the three-dimensional features of the cable-stayed bridge, and add beam constraints to the concrete main girder 10, steel main girder 20, bridge deck and pylon 30;

[0130] Obtain cable 40 from the 3D features of the cable-stayed bridge, and add truss constraints to cable 40;

[0131] Obtain the auxiliary pier 50 and transition pier 60 from the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary pier 50 and transition pier 60;

[0132] Obtain the main longitudinal beams and sub-bridge decks from the 3D features of the cable-stayed bridge, and add elastic constraints to the main longitudinal beams and sub-bridge decks.

[0133] Specifically, this embodiment provides an implementation method for adding virtual constraints to a three-dimensional virtual bridge model.

[0134] Possibly, fixed constraints can be added to the auxiliary pier 50 and the transition pier 60, specifically including:

[0135] The first top feature of the auxiliary pier 50 and the second top feature of the transition pier 60 are obtained. The first top feature is the connection position feature between the auxiliary pier 50 and the concrete main beam 10 or the steel main beam 20, and the second top feature is the connection position feature between the transition pier 60 and the concrete main beam 10 or the steel main beam 20.

[0136] Add vertical displacement constraints and transverse bridge line displacement constraints to the first and second top features;

[0137] Among them, the transverse bridge linear displacement constraint is a single-sided support constraint.

[0138] Specifically, this embodiment provides an implementation method for adding fixed constraints to the auxiliary pier 50 and the transition pier 60.

[0139] Possibly, beam constraints could be added to Tower 30, specifically including:

[0140] Obtain the height characteristics of tower 30, and determine the first tower and the second tower based on the height characteristics. The height of the first tower is greater than the height of the second tower.

[0141] Add vertical linear displacement constraints, longitudinal linear displacement constraints, and transverse linear displacement constraints to the first cable tower;

[0142] Add vertical linear displacement constraints and transverse linear displacement constraints to the second cable tower;

[0143] Among them, the transverse bridge linear displacement constraints are all single-sided support constraints.

[0144] Specifically, this embodiment provides an implementation method for adding beam constraints to the tower 30.

[0145] Possibly, a virtual construction strategy may be implemented, specifically including:

[0146] With virtual constraints added to the 3D virtual bridge model, cable adjustment operation is performed on the cable-stayed bridge's cable-stayed cable 40, and the first linear difference between the first tower and the second tower is obtained.

[0147] Based on the change of the first linear difference within the first difference change threshold range, a dead load is added to the load position of the cable-stayed bridge, and a second linear difference of the load position after the dead load is applied is obtained.

[0148] Repeat the above steps to obtain N second linear differences, where N is a positive integer greater than or equal to 1, and generate linear prediction samples based on the second linear differences.

[0149] Specifically, this embodiment provides an implementation method for executing a virtual construction strategy during the construction process.

[0150] It is possible to optimize the virtual construction strategy based on linear prediction samples, specifically including:

[0151] Based on the fact that the second linear difference is outside the second difference change threshold range, adjust the virtual constraints and / or dead loads added to the three-dimensional virtual bridge model, and re-execute the virtual construction strategy.

[0152] Specifically, this embodiment provides an implementation method for optimizing virtual construction strategies based on linear prediction samples.

[0153] Figure 10 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 10 As shown, the electronic device may include a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, communication interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions from the memory 830 to execute a linear monitoring method for the cable-stayed bridge construction process.

[0154] It should be noted that the electronic device in this embodiment can be a server, a PC, or other devices, as long as its structure includes the following: Figure 10 The processor 810, communication interface 820, memory 830, and communication bus 840 shown are interconnected via the communication bus 840. The processor 810 can call logical instructions stored in the memory 830 to execute the aforementioned method. This embodiment does not limit the specific implementation of the electronic device.

[0155] The server can be a single server or a group of servers. The server group can be centralized or distributed (for example, the servers can be a distributed system).

[0156] In possible embodiments, the server can be local or remote relative to the terminal. For example, the server can access information stored in the user terminal, a database, or any combination thereof via a network.

[0157] As another example, the server can directly connect to at least one of the user terminal and the database to access the information and / or data stored therein.

[0158] In possible embodiments, the server can be implemented on a cloud platform; by way of example only, the cloud platform may include private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, inter-cloud, multi-cloud, or any combination thereof.

[0159] In possible embodiments, the server and user terminal can be implemented on an electronic device having one or more components as described in the embodiments of the present invention.

[0160] Furthermore, networks can be used for the exchange of information and / or data.

[0161] In a possible embodiment, one or more components in the interaction scenario (e.g., server, user terminal, and database) may send information and / or data to other components.

[0162] In possible embodiments, the network can be any type of wired or wireless network, or a combination thereof. By way of example only, the network may include a wired network, a wireless network, a fiber optic network, a telecommunications network, an intranet, the Internet, a local area network (LAN), a wide area network (WAN), wireless local area networks (WLANs), a metropolitan area network (MAN), a public switched telephone network (PSTN), a Bluetooth network, a ZigBee network, or a near field communication (NFC) network, or any combination thereof.

[0163] In possible embodiments, the network may include one or more network access points. For example, the network may include wired or wireless network access points, such as base stations and / or network switching nodes, through which one or more components of the interaction scenario can connect to the network to exchange data and / or information.

[0164] Furthermore, the logic instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0165] Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0166] In a possible embodiment, the present invention provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the linear monitoring method for the cable-stayed bridge construction process provided in the above embodiments.

[0167] In a possible embodiment, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer is able to perform the methods provided in the above-described method embodiments.

[0168] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0169] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A linear monitoring method for the construction process of a cable-stayed bridge, characterized in that, include: Obtain a three-dimensional virtual bridge model of the cable-stayed bridge and extract the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model; Based on the three-dimensional features of the cable-stayed bridge, virtual constraints are added to the three-dimensional virtual bridge model; Based on the three-dimensional virtual bridge model with the added virtual constraints, a virtual construction strategy is executed, and linear prediction samples are obtained after the virtual construction strategy is executed. The virtual construction strategy is optimized based on the linear prediction samples. The extraction of the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model specifically includes: Obtain the concrete main beam (10), steel main beam (20), bridge deck, pylon (30), stay cable (40), auxiliary pier (50), transition pier (60), main longitudinal beam, and sub-bridge deck corresponding to the main longitudinal beam from the three-dimensional virtual bridge model; The three-dimensional features of the cable-stayed bridge are generated based on the concrete main beam (10), the steel main beam (20), the bridge deck, the pylon (30), the stay cables (40), the auxiliary piers (50), the transition piers (60), the main longitudinal beams, and the sub-bridge deck. Adding beam constraints to the pylon (30) specifically includes: The height characteristics of the cable tower (30) are obtained, and the first cable tower and the second cable tower are determined according to the height characteristics, wherein the height of the first cable tower is greater than the height of the second cable tower; Add vertical linear displacement constraints, longitudinal linear displacement constraints, and transverse linear displacement constraints to the first cable tower; Add vertical linear displacement constraints and transverse linear displacement constraints to the second cable tower; Among them, the transverse bridge linear displacement constraints are all single-sided support constraints; The execution of the virtual construction strategy specifically includes: After adding the virtual constraints based on the three-dimensional virtual bridge model, the cable adjustment operation is performed on the cable stays (40) of the cable-stayed bridge, and the first linear difference between the first tower and the second tower is obtained; Based on the change of the first linear difference within the first difference change threshold range, a constant load is added to the load position of the cable-stayed bridge, and a second linear difference of the load position after the constant load is applied is obtained. Repeat the above steps to obtain N second linear differences, where N is a positive integer greater than or equal to 1, and generate the linear prediction sample based on the second linear differences; The optimization of the virtual construction strategy based on the linear prediction samples specifically includes: Based on the fact that the second linear difference is outside the second difference change threshold range, adjust the virtual constraints and / or constant loads added to the three-dimensional virtual bridge model, and re-execute the virtual construction strategy.

2. The linear monitoring method for the construction process of a cable-stayed bridge according to claim 1, characterized in that, The step of adding virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge specifically includes: Obtain the concrete main beam (10), the steel main beam (20), the bridge deck and the pylon (30) from the three-dimensional features of the cable-stayed bridge, and add beam constraints to the concrete main beam (10), the steel main beam (20), the bridge deck and the pylon (30); Obtain the cable-stayed cable (40) from the three-dimensional features of the cable-stayed bridge, and add truss constraints to the cable-stayed cable (40); Obtain the auxiliary pier (50) and the transition pier (60) from the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary pier (50) and the transition pier (60); Obtain the main longitudinal beam and the sub-bridge deck from the three-dimensional features of the cable-stayed bridge, and add elastic constraints to the main longitudinal beam and the sub-bridge deck.

3. The linear monitoring method for the construction process of a cable-stayed bridge according to claim 2, characterized in that, Adding fixed constraints to the auxiliary pier (50) and the transition pier (60) specifically includes: Obtain the first top feature of the auxiliary pier (50) and the second top feature of the transition pier (60). The first top feature is the connection position feature between the auxiliary pier (50) and the concrete main beam (10) or the steel main beam (20). The second top feature is the connection position feature between the transition pier (60) and the concrete main beam (10) or the steel main beam (20). Add vertical displacement constraints and transverse bridge line displacement constraints to the first top feature and the second top feature; The transverse bridge linear displacement constraint is a single-sided support constraint.

4. A linear monitoring device for the construction process of a cable-stayed bridge, characterized in that, include: The feature acquisition module (100) is used to acquire a three-dimensional virtual bridge model of the cable-stayed bridge and extract the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model. The constraint addition module (200) is used to add virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge; The strategy execution module (300) is used to execute a virtual construction strategy based on the three-dimensional virtual bridge model after adding the virtual constraints, and to obtain linear prediction samples after executing the virtual construction strategy. The strategy optimization module (400) is used to optimize the virtual construction strategy based on the linear prediction samples; The extraction of the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model specifically includes: Obtain the concrete main beam (10), steel main beam (20), bridge deck, pylon (30), stay cable (40), auxiliary pier (50), transition pier (60), main longitudinal beam, and sub-bridge deck corresponding to the main longitudinal beam from the three-dimensional virtual bridge model; The three-dimensional features of the cable-stayed bridge are generated based on the concrete main beam (10), the steel main beam (20), the bridge deck, the pylon (30), the stay cables (40), the auxiliary piers (50), the transition piers (60), the main longitudinal beams, and the sub-bridge deck. Adding beam constraints to the pylon (30) specifically includes: The height characteristics of the cable tower (30) are obtained, and the first cable tower and the second cable tower are determined according to the height characteristics, wherein the height of the first cable tower is greater than the height of the second cable tower; Add vertical linear displacement constraints, longitudinal linear displacement constraints, and transverse linear displacement constraints to the first cable tower; Add vertical linear displacement constraints and transverse linear displacement constraints to the second cable tower; Among them, the transverse bridge linear displacement constraints are all single-sided support constraints; The execution of the virtual construction strategy specifically includes: After adding the virtual constraints based on the three-dimensional virtual bridge model, the cable adjustment operation is performed on the cable stays (40) of the cable-stayed bridge, and the first linear difference between the first tower and the second tower is obtained; Based on the change of the first linear difference within the first difference change threshold range, a constant load is added to the load position of the cable-stayed bridge, and a second linear difference of the load position after the constant load is applied is obtained. Repeat the above steps to obtain N second linear differences, where N is a positive integer greater than or equal to 1, and generate the linear prediction sample based on the second linear differences; The optimization of the virtual construction strategy based on the linear prediction samples specifically includes: Based on the fact that the second linear difference is outside the second difference change threshold range, adjust the virtual constraints and / or constant loads added to the three-dimensional virtual bridge model, and re-execute the virtual construction strategy.

5. An electronic device, characterized in that, include: Memory (830) and processor (810); The memory (830) and the processor (810) communicate with each other via a bus; The memory (830) stores computer instructions that can be executed on the processor (810); When the processor (810) invokes the computer instructions, it is able to execute the linear monitoring method for the construction process of the cable-stayed bridge as described in any one of claims 1 to 3.

6. A computer program product comprising a non-transitory machine-readable medium storing a computer program, characterized in that, When the computer program is executed by the processor (810), it implements the steps of the linear monitoring method for the construction process of a cable-stayed bridge as described in any one of claims 1 to 3.

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