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

Abstract

The invention 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, and the method comprises the 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 of the three-dimensional virtual bridge body model; based on the three-dimensional characteristics of the cable-stayed bridge, virtual constraints are added to the three-dimensional virtual bridge body model; based on the three-dimensional virtual bridge body model added with the virtual constraint, executing a virtual construction strategy, and obtaining a linear prediction sample after the virtual construction strategy is executed; and optimizing the virtual construction strategy according to the linear prediction sample. According to the method, traditional bridge construction is combined with an artificial intelligence algorithm, the scene of the cable-stayed bridge in the construction process is simulated, data collection and analysis are conducted on stress changes of the three-dimensional virtual bridge body model according to the construction steps, whether linear changes of the cable-stayed bridge in actual construction meet construction requirements or not can be predicted, and the construction efficiency is improved. The construction safety and the construction quality are greatly improved, and the construction period is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a linear monitoring method, device, equipment and product for the construction process of a cable-stayed bridge. Background Art

[0002] With the rapid construction and development of high-speed railways, the safety requirements for line construction are getting higher and higher, and the proportion of bridges in the line is gradually increasing. In order to ensure that high-speed railway lines can cross special sections such as deep valleys and rivers, a large number of large-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 spans and flexible structures, they produce extremely complex spatial deformations under the action of external loads such as temperature and wind, which seriously affects the safety and speed of cable and bridge construction. How to use computer technology to simulate, analyze and improve factors such as non-compliance with safety requirements during the construction of cable-stayed bridges has become a key issue to ensure construction quality. Summary of the invention

[0003] The present invention provides a linear monitoring method, device, equipment and product for the construction process of a cable-stayed bridge, which is used to solve the defects in the existing cable-stayed bridge construction process that the linear deformation of the bridge body cannot be accurately predicted, resulting in insufficient construction safety, delayed construction period, and affected construction quality.

[0004] According to a first aspect of the present invention, a linear monitoring method for a cable-stayed bridge construction process is provided, comprising: Acquire a three-dimensional virtual bridge model of a cable-stayed bridge, and extract three-dimensional features of the cable-stayed bridge of the three-dimensional virtual bridge model; Based on the three-dimensional features of the cable-stayed bridge, adding virtual constraints to the three-dimensional virtual bridge model; Based on the three-dimensional virtual bridge model after adding the virtual constraints, executing a virtual construction strategy, and obtaining a linear prediction sample after executing the virtual construction strategy; The virtual construction strategy is optimized according to the linear prediction samples.

[0005] According to an embodiment of the present invention, extracting the three-dimensional features of the cable-stayed bridge of the three-dimensional virtual bridge model specifically includes: Acquire the concrete main beam, steel main beam, bridge deck, pylon, cable-stayed cable, auxiliary pier, transition pier, main longitudinal beam and sub-bridge deck corresponding to the main longitudinal beam in the three-dimensional virtual bridge model; The three-dimensional features of the cable-stayed bridge are generated according to the concrete main beam, the steel main beam, the bridge deck, the pylons, the stay cables, the auxiliary piers, the transition piers, the main longitudinal beams and the sub-bridge deck.

[0006] Specifically, this embodiment provides an implementation method for extracting the three-dimensional features of the cable-stayed bridge of the three-dimensional virtual bridge model.

[0007] According to an 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: Acquire the concrete main beam, the steel main beam, the bridge deck and the cable tower in the three-dimensional features of the cable-stayed bridge, and add beam constraints to the concrete main beam, the steel main beam, the bridge deck and the cable tower; Acquire the cable in the three-dimensional feature of the cable-stayed bridge, and add a truss constraint to the cable; Acquire the auxiliary pier and the transition pier in the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary pier and the transition pier; The main longitudinal beam and the sub-bridge deck in the three-dimensional features of the cable-stayed bridge are obtained, and elastic constraints are added to the main longitudinal beam and the sub-bridge deck.

[0008] Specifically, this embodiment provides an implementation method for adding virtual constraints to the three-dimensional virtual bridge model.

[0009] According to an embodiment of the present invention, adding fixed constraints to the auxiliary pier and the transition pier specifically includes: Acquire a first top feature of the auxiliary pier and a second top feature of the transition pier, wherein the first top feature is a feature of a connection position between the auxiliary pier and the concrete main beam or the steel main beam, and the second top feature is a feature of a connection position between the transition pier and the concrete main beam or the steel main beam; Adding vertical displacement constraints and transverse bridge linear displacement constraints to the first top feature and the second top feature; Wherein, the transverse bridge linear displacement constraint is a single-side support constraint.

[0010] Specifically, this embodiment provides an implementation method for adding fixed constraints to the auxiliary pier and the transition pier.

[0011] According to an embodiment of the present invention, adding beam constraints to the cable tower specifically includes: Acquire height characteristics of the cable towers, and determine a first cable tower and a second cable tower according to the height characteristics, wherein the height of the first cable tower is greater than the height of the second cable tower; Adding vertical line displacement constraints, longitudinal line displacement constraints and transverse line displacement constraints to the first cable tower; Adding vertical line displacement constraints and transverse bridge line displacement constraints to the second cable tower; Among them, the transverse bridge linear displacement constraints are all single-side support constraints.

[0012] Specifically, this embodiment provides an implementation method for adding beam constraints to the cable tower.

[0013] According to an implementation manner of the present invention, the execution of the virtual construction strategy specifically includes: When the virtual constraints are added to the three-dimensional virtual bridge model, a cable adjustment operation is performed on the cable-stayed bridge, and a first linear difference between the first cable tower and the second cable tower is obtained; Based on the change of the first linear difference being within a first difference change threshold range, adding a constant load to the load position of the cable-stayed bridge, and acquiring a second linear difference of the load position after the constant load is loaded; Repeat the above steps to obtain N second linear difference values, where N is a positive integer greater than or equal to 1, and generate the linear prediction samples according to the second linear difference values.

[0014] Specifically, this embodiment provides an implementation method for executing a virtual construction strategy during the construction process.

[0015] According to an implementation manner of the present invention, the optimizing the virtual construction strategy according to the linear prediction sample specifically includes: Based on the second linear difference being outside a second difference change threshold range, the virtual constraints and / or dead loads added to the three-dimensional virtual bridge model are adjusted, and the virtual construction strategy is re-executed.

[0016] Specifically, this embodiment provides an implementation method for optimizing the virtual construction strategy according to the linear prediction samples.

[0017] According to a second aspect of the present invention, a linear monitoring device for a cable-stayed bridge construction process is provided, comprising: A feature acquisition module, used to acquire a three-dimensional virtual bridge model of a cable-stayed bridge, and extract three-dimensional features of the cable-stayed bridge of the three-dimensional virtual bridge model; A constraint adding module, used for adding virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge; A strategy execution module, used to execute a virtual construction strategy based on the three-dimensional virtual bridge model after adding the virtual constraints, and obtain a linear prediction sample after executing the virtual construction strategy; A strategy optimization module is used to optimize the virtual construction strategy according to the linear prediction samples.

[0018] According to a third aspect of the present invention, an electronic device is provided, comprising: a memory and a processor; The memory and the processor communicate with each other via a bus; The memory stores computer instructions that can be executed on the processor; When the processor calls the computer instructions, it can execute the above-mentioned linear monitoring method for the construction process of the cable-stayed bridge.

[0019] According to a fourth aspect of the present invention, a computer program product is provided, which includes a non-transitory machine-readable medium storing a computer program, and when the computer program is executed by a processor, the steps of the linear monitoring method for the construction process of a cable-stayed bridge are implemented.

[0020] The above one or more technical solutions in the present invention have at least one of the following technical effects: the present invention provides a linear monitoring method, device, equipment and product for the construction process of a cable-stayed bridge, which combines traditional bridge construction with an artificial intelligence algorithm to establish a three-dimensional virtual bridge model for the cable-stayed bridge, and adds virtual constraints existing in the construction to the three-dimensional virtual bridge model, simulates the scene of the cable-stayed bridge during the construction process, and collects and analyzes data on the force changes of the three-dimensional virtual bridge model according to the construction steps, and can predict whether the linear changes of the cable-stayed bridge in actual construction meet the construction requirements, greatly improves the construction safety and construction quality, and ensures the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional virtual bridge model of the cable-stayed bridge provided by the present invention.

[0023] Figure 2 It is a flow chart of the linear monitoring method for the cable-stayed bridge construction process provided by the present invention.

[0024] Figure 3 It is a schematic diagram of cable adjustment working condition parameters in the linear monitoring method for the cable-stayed bridge construction process provided by the present invention.

[0025] Figure 4 It is a linear schematic diagram of the predicted completed bridge after cable adjustment in the linear monitoring method of the cable-stayed bridge construction process provided by the present invention.

[0026] Figure 5 It is a schematic diagram of the main body deflection under the action of a constant load in the linear monitoring method for the cable-stayed bridge construction process provided by the present invention.

[0027] Figure 6 It is a schematic diagram of the main deflection of the linear prediction of the completed bridge in the linear monitoring method of the cable-stayed bridge construction process provided by the present invention.

[0028] Figure 7 It is one of the linear schematic diagrams for predicting bridge completion under constant load in the linear monitoring method for the cable-stayed bridge construction process provided by the present invention.

[0029] Figure 8 This is the second linear schematic diagram of predicted bridge completion under constant load in the linear monitoring method for the cable-stayed bridge construction process provided by the present invention.

[0030] Fig. 9 It is a structural schematic diagram of a linear monitoring device for a cable-stayed bridge construction process provided by the present invention.

[0031] Fig.10 It is a structural schematic diagram of the electronic device provided by the present invention.

[0032] Reference numerals: 10. Concrete main beam; 20. Steel main beam; 30. Cable tower; 40. Cable-stayed cable; 50. Auxiliary pier; 60. Transition pier; 100, feature acquisition module; 200, constraint addition module; 300, strategy execution module; 400, strategy optimization module; 810, processor; 820, communication interface; 830, memory; 840, communication bus. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention is described in detail below in conjunction with the accompanying drawings of the specification. The specific operating method in the method embodiment can also be applied to the device embodiment or the system embodiment. In the description of the present invention, unless otherwise specified, "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 exists alone, B exists alone, A and B exist at the same time, A and C exist at the same time, B and C exist at the same time, and A, B and C exist at the same time. In the present invention, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a kind of association relationship that describes the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0035] The present invention will be described in detail below in conjunction with specific implementation modes.

[0036] In some specific embodiments of the present invention, Figures 1 to 8 As shown, this scheme provides a linear monitoring method for the construction process of a cable-stayed bridge, including: Acquire a three-dimensional virtual bridge model of the cable-stayed bridge, and extract three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model; Based on the 3D characteristics of the cable-stayed bridge, virtual constraints are added to the 3D virtual bridge model; Based on the three-dimensional virtual bridge model after adding virtual constraints, the virtual construction strategy is executed, and the linear prediction samples after the execution of the virtual construction strategy are obtained; The virtual construction strategy is optimized based on the linear prediction samples.

[0037] 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 have a design speed of 350 km / h, and the two sides are reserved for a design speed of 160 km / h.

[0038] In some possible implementations of the present invention, extracting the three-dimensional features of the cable-stayed bridge of the three-dimensional virtual bridge model specifically includes: Obtaining the concrete main beam 10, the steel main beam 20, the bridge deck, the pylon 30, the inclined cable 40, the auxiliary pier 50, the transition pier 60, the main longitudinal beam and the sub-bridge deck corresponding to the main longitudinal beam in the three-dimensional virtual bridge model; The three-dimensional features of the cable-stayed bridge are generated according to the concrete main beam 10, the steel main beam 20, the bridge deck, the cable tower 30, the cable-stayed cable 40, the auxiliary pier 50, the transition pier 60, the main longitudinal beam and the sub-bridge deck.

[0039] 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. Combined with the stress conditions during the construction of the cable-stayed bridge, the main stress positions and stress points of the three-dimensional virtual bridge model are acquired, 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 scene of the cable-stayed bridge by adding constraints to various parts 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.

[0040] In some possible implementations of the present invention, based on the three-dimensional features of the cable-stayed bridge, virtual constraints are added to the three-dimensional virtual bridge model, specifically including: Acquire the concrete main beam 10, the steel main beam 20, the bridge deck and the cable tower 30 in 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 cable tower 30; Obtain the cable 40 in the three-dimensional feature of the cable-stayed bridge, and add a truss constraint to the cable 40; Obtain the auxiliary pier 50 and the transition pier 60 in the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary pier 50 and the transition pier 60; Get the main longitudinal beams and sub-bridge decks in the 3D feature of the cable-stayed bridge and add elastic constraints to them.

[0041] Specifically, this embodiment provides an implementation method for adding virtual constraints to a three-dimensional virtual bridge model. According to the actual conditions of different stress positions in the three-dimensional characteristics 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 the construction process, so as to realize linear monitoring of the construction process of the cable-stayed bridge and ensure construction safety and quality.

[0042] It should be noted that the stress environments of the concrete main beam 10, steel main beam 20, bridge deck, pylon 30, cable-stayed cable 40, auxiliary pier 50, transition pier 60, main longitudinal beam and sub-bridge deck in the actual environment are not the same. Therefore, by adding different forms of constraints to different positions of the three-dimensional virtual bridge model, the stress conditions of the cable-stayed bridge in actual working conditions are simulated, making the results of linear monitoring of the cable-stayed bridge closer to the real value.

[0043] In a possible embodiment, during the process of adding constraints to the three-dimensional virtual bridge model, the bottoms of the cable tower 30 , the auxiliary pier 50 , and the transition pier 60 are completely fixed.

[0044] In some possible implementations of the present invention, fixed constraints are added to the auxiliary pier 50 and the transition pier 60, specifically including: Obtain a first top feature of the auxiliary pier 50 and a second top feature of the transition pier 60, wherein the first top feature is a feature of a connection position between the auxiliary pier 50 and the concrete main beam 10 or the steel main beam 20, and the second top feature is a feature of a connection position between the transition pier 60 and the concrete main beam 10 or the steel main beam 20; Add vertical displacement constraints and transverse bridge linear displacement constraints to the first top feature and the second top feature; Among them, the transverse bridge linear displacement constraint is a single-side support constraint.

[0045] Specifically, this embodiment provides an implementation method for adding fixed constraints to the auxiliary pier 50 and the transition pier 60. For the addition of constraints to the auxiliary pier 50 and the transition pier 60, fixed constraints are set according to actual conditions. 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 conditions of the auxiliary pier 50 and the transition pier 60 during the actual working conditions of the cable-stayed bridge.

[0046] In some possible implementations of the present invention, beam constraints are added to the cable tower 30, specifically including: Acquire a height feature of the cable tower 30, and determine a first cable tower and a second cable tower according to the height feature, wherein the height of the first cable tower is greater than the height of the second cable tower; Add vertical line displacement constraints, longitudinal line displacement constraints and transverse line displacement constraints to the first cable tower; Add vertical displacement constraints and transverse displacement constraints to the second cable tower; Among them, the transverse bridge linear displacement constraints are all single-side support constraints.

[0047] Specifically, this embodiment provides an implementation method for adding beam constraints to the cable tower 30. The cable-stayed bridge of the present invention is provided with two cable towers 30 of different heights, namely the first cable tower and the second cable tower. Due to the different heights of the two cable towers 30, there are different forces and deformations. Therefore, it is necessary to add constraints that are closer to the actual situation to the two cable towers 30 of different heights. For example, vertical linear displacement constraints, linear displacement constraints in the direction along the bridge, and linear displacement constraints in the transverse direction of the bridge are added to the first cable tower with a higher height. Therefore, the cable tower 30 is higher in height, and its deformation is larger when it is subjected to forces in the vertical linear displacement, the direction along the bridge, and the transverse direction of the bridge, while the second cable tower with a lower height only needs to be constrained in the linear displacement in the vertical and transverse directions.

[0048] In some possible implementations of the present invention, executing a virtual construction strategy specifically includes: After adding virtual constraints based on the three-dimensional virtual bridge model, a cable adjustment operation is performed on the cable-stayed cable 40 of the cable-stayed bridge, and a first linear difference between the first cable tower and the second cable tower is obtained; Based on the change of the first linear difference within the first difference change threshold range, adding a constant load to the load position of the cable-stayed bridge, and obtaining a second linear difference of the load position after the constant load is added; Repeat the above steps to obtain N second linear difference values, where N is a positive integer greater than or equal to 1, and generate linear prediction samples according to the second linear difference values.

[0049] Specifically, this embodiment provides an implementation method for executing a virtual construction strategy. During the construction process, Figure 3 and Figure 4 As shown, it is mainly reflected in adjusting the cable 40. In the process of adjusting the first cable tower and the second cable tower respectively, the first linear difference between the first cable tower and the second cable tower is obtained. When the change of the first linear difference is within the first difference change threshold range, a constant load is added to the load position of the cable-stayed bridge, and the second linear difference of the cable-stayed bridge after the constant load is added is obtained. The above steps are repeated to obtain N second linear differences, and then a linear prediction sample is obtained.

[0050] It should be noted that the adjustment of the cable-stayed cable 40 is also related to the mileage. Different mileage settings have different effects on the parameters of the cable-stayed cable 40. Therefore, during the process, mileage constraints can be added to simulate the construction environment and operation environment of the cable-stayed bridge, so as to improve the safety and construction quality of the cable-stayed bridge construction.

[0051] Further, Figure 3 , Figures 5 to 7 The mileage in is the mileage of the location of the cable-stayed bridge in the entire line.

[0052] In a possible embodiment, if Figure 3 As shown in the figure, MD is the second cable tower and MG is the first cable tower. After the main bridge was closed, the first cable adjustment was carried out according to the actual alignment and cable force test results. The alignment changes during the first cable adjustment and the predicted alignment of the final bridge are shown in the figure. Figure 3 As shown, the working condition before cable adjustment: the wet joints on the short tower side are cast to MD2, and the wet joints on the tall tower side are cast to MG11; the working condition when cable adjustment is completed: the wet joints on the short tower side are cast to MD6, and the wet joints on the tall tower side are cast to MG11.

[0053] In a possible embodiment, the calculation of the first linear difference can be obtained by calculating the predicted later displacement after cable adjustment, the predicted bridge linearity, and the designed linear difference. In order to save space, the present invention does not elaborate on this. In practical applications, the relevant design standards for cable-stayed bridges can be referred to.

[0054] In a possible embodiment, if the change of the first linear difference is outside the first difference change threshold range, it may be affected by ambient temperature and other factors. Therefore, the virtual ambient temperature of the three-dimensional virtual bridge model can be adjusted to adjust the change of the first linear difference to within the first difference change threshold range.

[0055] In a possible embodiment, during the process of adding the dead load, the addition is carried out based on the four-line ballastless track, and the total dead load design value is 237kN / m, mainly including: 1) Bridge deck protection layer: 28kN / m; 2) Retaining wall + vertical wall + cover plate + guardrail: 35kN / m; 3) Base plate (4 wires): 62kN / m; 4) Self-compacting concrete between base plate and ballast plate (4 lines): 36kN / m; 5) Ballast plate (4 lines) (including track base): 60kN / m; 6) Others (cables, contact lines, rails, etc.): 16kN / m.

[0056] In some possible implementations of the present invention, the virtual construction strategy is optimized according to the linear prediction samples, specifically including: Based on the second linear difference being outside the second difference change threshold range, the virtual constraints and / or dead loads added to the three-dimensional virtual bridge model are adjusted, and the virtual construction strategy is re-executed.

[0057] Specifically, this embodiment provides an implementation method for optimizing the virtual construction strategy based on linear prediction samples, such as Figures 5 to 8 As shown, when the second linear difference is outside the second difference change threshold range, it may be due to improper virtual constraints and / or constant loads added to the three-dimensional virtual bridge model, so the parameters are readjusted so that the obtained second linear difference is within the second difference change threshold range.

[0058] In a possible embodiment, the second linear difference can be calculated by calculating the beam deflection after applying the constant load and the linear prediction of the completed bridge. In order to save space, the present invention does not elaborate on this. In practical applications, the relevant design standards for cable-stayed bridges can be referred to.

[0059] It should be noted that the linear prediction of the completed bridge includes the current measured bridge deck elevation, the bridge deck elevation after the current load is cleared, the retaining wall and other paving is completed, the base plate is constructed, and the bridge deck protection layer is constructed. At the same time, the monitoring of the positions of different beam numbers provides data support for the linear monitoring of cable-stayed bridges.

[0060] In a possible embodiment, the second linear difference is outside the second difference change threshold range. Considering that it may also be affected by ambient temperature and other factors, the virtual ambient temperature of the three-dimensional virtual bridge model can be adjusted to adjust the change of the second linear difference to within the first difference change threshold range.

[0061] In some specific embodiments of the present invention, Fig. 9 As shown, this scheme provides a linear monitoring device for the construction process of a cable-stayed bridge, comprising: The feature acquisition module 100 is used to acquire a three-dimensional virtual bridge model of the cable-stayed bridge and extract three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model; The constraint adding module 200 is used to add virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional characteristics of the cable-stayed bridge; A strategy execution module 300 is used to execute a virtual construction strategy based on the three-dimensional virtual bridge model after adding virtual constraints, and obtain a linear prediction sample after the execution of the virtual construction strategy; The strategy optimization module 400 is used to optimize the virtual construction strategy according to the linear prediction samples.

[0062] It is possible to extract the three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model, including: Obtaining the concrete main beam 10, the steel main beam 20, the bridge deck, the pylon 30, the inclined cable 40, the auxiliary pier 50, the transition pier 60, the main longitudinal beam and the sub-bridge deck corresponding to the main longitudinal beam in the three-dimensional virtual bridge model; The three-dimensional features of the cable-stayed bridge are generated according to the concrete main beam 10, the steel main beam 20, the bridge deck, the cable tower 30, the cable-stayed cable 40, the auxiliary pier 50, the transition pier 60, the main longitudinal beam and the sub-bridge deck.

[0063] Specifically, this embodiment provides an implementation method for extracting three-dimensional features of a cable-stayed bridge from a three-dimensional virtual bridge model.

[0064] Possibly, based on the 3D characteristics of the cable-stayed bridge, virtual constraints are added to the 3D virtual bridge model, including: Acquire the concrete main beam 10, the steel main beam 20, the bridge deck and the cable tower 30 in 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 cable tower 30; Obtain the cable 40 in the three-dimensional feature of the cable-stayed bridge, and add a truss constraint to the cable 40; Obtain the auxiliary pier 50 and the transition pier 60 in the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary pier 50 and the transition pier 60; Get the main longitudinal beams and sub-bridge decks in the 3D feature of the cable-stayed bridge and add elastic constraints to them.

[0065] Specifically, this embodiment provides an implementation method for adding virtual constraints to a three-dimensional virtual bridge model.

[0066] Possibly, fixed constraints are added to the auxiliary pier 50 and the transition pier 60, specifically including: Obtain a first top feature of the auxiliary pier 50 and a second top feature of the transition pier 60, wherein the first top feature is a feature of a connection position between the auxiliary pier 50 and the concrete main beam 10 or the steel main beam 20, and the second top feature is a feature of a connection position between the transition pier 60 and the concrete main beam 10 or the steel main beam 20; Add vertical displacement constraints and transverse bridge linear displacement constraints to the first top feature and the second top feature; Among them, the transverse bridge linear displacement constraint is a single-side support constraint.

[0067] Specifically, this embodiment provides an implementation method for adding fixed constraints to the auxiliary pier 50 and the transition pier 60 .

[0068] Possibly, beam constraints are added to the tower 30, specifically including: Acquire a height feature of the cable tower 30, and determine a first cable tower and a second cable tower according to the height feature, wherein the height of the first cable tower is greater than the height of the second cable tower; Add vertical line displacement constraints, longitudinal line displacement constraints and transverse line displacement constraints to the first cable tower; Add vertical displacement constraints and transverse displacement constraints to the second cable tower; Among them, the transverse bridge linear displacement constraints are all single-side support constraints.

[0069] Specifically, this embodiment provides an implementation method for adding beam constraints to the cable tower 30 .

[0070] Where possible, implement virtual construction strategies, including: After adding virtual constraints based on the three-dimensional virtual bridge model, a cable adjustment operation is performed on the cable-stayed cable 40 of the cable-stayed bridge, and a first linear difference between the first cable tower and the second cable tower is obtained; Based on the change of the first linear difference within the first difference change threshold range, adding a constant load to the load position of the cable-stayed bridge, and obtaining a second linear difference of the load position after the constant load is added; Repeat the above steps to obtain N second linear difference values, where N is a positive integer greater than or equal to 1, and generate linear prediction samples according to the second linear difference values.

[0071] Specifically, this embodiment provides an implementation method for executing a virtual construction strategy during the construction process.

[0072] Possibly, the virtual construction strategy is optimized based on the linear prediction samples, including: Based on the second linear difference being outside the second difference change threshold range, the virtual constraints and / or dead loads added to the three-dimensional virtual bridge model are adjusted, and the virtual construction strategy is re-executed.

[0073] Specifically, this embodiment provides an implementation method for optimizing the virtual construction strategy according to linear prediction samples.

[0074] Fig.10 An example of a physical structure diagram of an electronic device is shown in FIG. Fig.10 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820 and the memory 830 communicate with each other through the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute the linear monitoring method of the cable-stayed bridge construction process.

[0075] It should be noted that the electronic device in this embodiment can be a server, a PC, or other devices in specific implementation, as long as its structure includes the following: Fig.10 The processor 810, communication interface 820, memory 830 and communication bus 840 shown in the figure, wherein the processor 810, communication interface 820, memory 830 communicate with each other through the communication bus 840, and the processor 810 can call the logic instructions in the memory 830 to execute the above method. This embodiment does not limit the specific implementation form of the electronic device.

[0076] The server may be a single server or a server group. The server group may be centralized or distributed (for example, the server may be a distributed system).

[0077] In a possible embodiment, the server can be local or remote relative to the terminal. For example, the server can access information stored in the user terminal, database or any combination thereof via a network.

[0078] As another example, the server may be directly connected to at least one of the user terminal and the database to access information and / or data stored therein.

[0079] In a possible embodiment, the server may be implemented on a cloud platform; by way of example only, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an inter-cloud, a multi-cloud, etc., or any combination thereof.

[0080] In a possible embodiment, the server and the user terminal may be implemented on an electronic device having one or more components in the embodiments of the present invention.

[0081] Furthermore, the network may be used for the exchange of information and / or data.

[0082] In a possible embodiment, one or more components in the interactive scenario (eg, a server, a user terminal, and a database) may send information and / or data to other components.

[0083] In possible embodiments, the network may be any type of wired or wireless network, or a combination thereof. As examples 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), a wireless local area network (WLAN), a metropolitan area network (MAN), a wide area network (WAN), a public switched telephone network (PSTN), a Bluetooth network, a ZigBee network, or a near field communication (NFC) network, or any combination thereof.

[0084] In a possible embodiment, the network may include one or more network access points. For example, the network may include a wired or wireless network access point, such as a base station and / or a network switching node, through which one or more components of the interactive scene may connect to the network to exchange data and / or information.

[0085] In addition, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0086] Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., various media that can store program codes.

[0087] In a possible embodiment, an embodiment of the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the linear monitoring method for the construction process of a cable-stayed bridge provided in the above-mentioned embodiments.

[0088] In a possible embodiment, the embodiment of the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the methods provided by the above-mentioned method embodiments.

[0089] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0090] Through the description of the above implementation modes, those skilled in the art can clearly understand that each implementation mode can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on such an understanding, the above technical solution can essentially or in other words be embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A linear monitoring method for a cable-stayed bridge construction process, characterized in that: include: Acquire a three-dimensional virtual bridge model of a cable-stayed bridge, and extract three-dimensional features of the cable-stayed bridge of the three-dimensional virtual bridge model; Based on the three-dimensional features of the cable-stayed bridge, adding virtual constraints to the three-dimensional virtual bridge model; Based on the three-dimensional virtual bridge model after adding the virtual constraints, executing a virtual construction strategy, and obtaining a linear prediction sample after executing the virtual construction strategy; The virtual construction strategy is optimized according to the linear prediction samples.

2. The linear monitoring method for the construction process of a cable-stayed bridge according to claim 1, characterized in that: The extracting of the three-dimensional features of the cable-stayed bridge of the three-dimensional virtual bridge model specifically includes: Acquire a concrete main beam (10), a steel main beam (20), a bridge deck, a pylon (30), a stay cable (40), an auxiliary pier (50), a transition pier (60), a main longitudinal beam, and a sub-bridge deck corresponding to the main longitudinal beam in the three-dimensional virtual bridge model; The three-dimensional features of the cable-stayed bridge are generated according to the concrete main beam (10), the steel main beam (20), the bridge deck, the pylon (30), the cable-stayed cable (40), the auxiliary pier (50), the transition pier (60), 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: The adding virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge specifically includes: Acquiring the concrete main beam (10), the steel main beam (20), the bridge deck and the cable tower (30) in the three-dimensional features of the cable-stayed bridge, and adding beam constraints to the concrete main beam (10), the steel main beam (20), the bridge deck and the cable tower (30); Acquire the cable-stayed bridge in the three-dimensional feature, and add a truss constraint to the cable-stayed bridge; Acquire the auxiliary pier (50) and the transition pier (60) in the three-dimensional features of the cable-stayed bridge, and add fixed constraints to the auxiliary pier (50) and the transition pier (60); The main longitudinal beam and the sub-bridge deck in the three-dimensional features of the cable-stayed bridge are obtained, and elastic constraints are added to the main longitudinal beam and the sub-bridge deck.

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

5. The linear monitoring method for the construction process of a cable-stayed bridge according to any one of claims 2 to 4, characterized in that: The adding of beam constraints to the cable tower (30) specifically includes: Acquiring a height feature of the cable tower (30), and determining a first cable tower and a second cable tower according to the height feature, wherein the height of the first cable tower is greater than the height of the second cable tower; Adding vertical line displacement constraints, longitudinal line displacement constraints and transverse line displacement constraints to the first cable tower; Add vertical line displacement constraints and transverse bridge line displacement constraints to the second cable tower; Among them, the transverse bridge linear displacement constraints are all single-side support constraints.

6. The linear monitoring method for the construction process of a cable-stayed bridge according to claim 5, characterized in that: The execution of the virtual construction strategy specifically includes: Based on the three-dimensional virtual bridge model, when the virtual constraints are added, a cable adjustment operation is performed on the cable-stayed cables (40) of the cable-stayed bridge, and a first linear difference between the first cable tower and the second cable tower is obtained; Based on the change of the first linear difference being within a first difference change threshold range, adding a constant load to the load position of the cable-stayed bridge, and acquiring a second linear difference of the load position after the constant load is loaded; Repeat the above steps to obtain N second linear difference values, where N is a positive integer greater than or equal to 1, and generate the linear prediction samples according to the second linear difference values.

7. The linear monitoring method for the construction process of a cable-stayed bridge according to claim 6, characterized in that: The optimizing the virtual construction strategy according to the linear prediction sample specifically includes: Based on the second linear difference being outside a second difference change threshold range, the virtual constraints and / or dead loads added to the three-dimensional virtual bridge model are adjusted, and the virtual construction strategy is re-executed.

8. A linear monitoring device for the construction process of a cable-stayed bridge, characterized in that: include: A feature acquisition module (100) is used to acquire a three-dimensional virtual bridge model of a cable-stayed bridge and extract three-dimensional features of the cable-stayed bridge from the three-dimensional virtual bridge model; A constraint adding module (200), used for adding virtual constraints to the three-dimensional virtual bridge model based on the three-dimensional features of the cable-stayed bridge; A 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 obtain a linear prediction sample after executing the virtual construction strategy; A strategy optimization module (400) is used to optimize the virtual construction strategy according to the linear prediction samples.

9. An electronic device, characterized in that: Includes: 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) calls the computer instructions, it is capable of executing the linear monitoring method for the construction process of a cable-stayed bridge as described in any one of claims 1 to 7.

10. 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), 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 7 are implemented.

Images