Bridge construction scheme optimization method and device, equipment and storage medium

Abstract

The invention discloses a bridge construction scheme optimization method, device and equipment and a storage medium, and the method comprises the steps: dividing a site based on a built scene information model and a construction affair map, and generating an existing information map corresponding to a site environment, the existing information graph comprises a site plane graph, a site clearance height distribution graph, a site foundation bearing capacity distribution graph and a site flatness distribution graph; the scene information model and the construction affair map are utilized to simulate the construction process so as to generate a prediction demand information map corresponding to the construction scheme, and the prediction demand information map comprises a land occupation range map, a clearance height demand distribution map of the land occupation range, a foundation load distribution map and a ground flatness demand map; and optimizing a construction operation plan in combination with the existing information graph and the predicted demand information graph. The construction scheme can be optimized for multiple rounds, the situation that the optimization activity of the construction scheme breaks away from the actual site condition can be effectively prevented, and the optimization quality of the construction scheme is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction, in particular to a bridge construction scheme optimization method, device, equipment and storage medium. BACKGROUND

[0002] The city viaduct is built to expand the traffic space of the city traffic road and relieve the problem of urban traffic congestion. However, during the construction period of the city viaduct, the construction activities and the urban traffic activities interfere with each other, which can easily cause problems such as delay of construction period, increase of construction cost, safety accidents and serious congestion of regional traffic, etc. It is a kind of pain that is difficult to completely avoid in the current urban construction development process. In the current bridge construction technology, the main method to shorten the pain period of city viaduct construction is to use the assembly method to build.

[0003] In the existing construction scheme optimization technology, the city assembly type bridge construction mainly uses the system analysis method to compile the bridge construction scheme, and optimizes the construction scheme through the method of expert meeting. This optimization method is easy to ignore the difference between expert experience and actual situation, and is difficult to objectively and fully consider the complex mutual influence between the bridge construction activities and the complex pipelines, limited site and traffic interference in the urban environment, which can easily cause the phenomenon that the construction scheme optimization activities are out of touch with the actual situation, and the actual effect of the construction scheme optimization is not good.

[0004] In the existing construction scheme optimization technology, some auxiliary methods based on BIM construction simulation technology are used. The existing construction simulation technology mainly uses building information model (BIM technology), which can use digital technology to virtually present the construction process, and the core value is to replace the entity trial and error cost with digitalization, which has a certain auxiliary effect on the construction scheme optimization activities. This technology can only show an idealized construction process from the construction point of view, which is subjective and one-sided. The main reason is that the information in BIM mainly reflects the engineering information of the bridge under construction, and the information reflecting the urban environment and urban activities is lacking or seriously insufficient; using this technology can only simulate the engineering construction process under ideal conditions, and cannot fully reflect the restrictions and interference of the urban environment on the bridge construction activities, nor can it fully reflect the influence and interference of the construction activities on the urban activities. Therefore, how to fully consider the urban environment parameters and then optimize the construction scheme is a technical problem to be solved at present. SUMMARY

[0005] The main purpose of the present application is to provide a bridge construction scheme optimization method, device, equipment and storage medium, which can optimize the construction scheme in multiple rounds, and can also effectively prevent the construction scheme optimization activities from deviating from the actual conditions on site, and improve the quality of the construction scheme optimization.

[0006] In a first aspect, the application provides a bridge construction scheme optimization method, wherein the method comprises the following steps: Based on the constructed scene information model and construction process graph, the site is divided and existing information graphs corresponding to the site environment are generated, the existing information graphs comprising: a site plan, a site clearance height distribution graph, a site foundation bearing capacity distribution graph and a site flatness distribution graph; The construction process is simulated using the scene information model and construction process graph to generate predicted demand information graphs corresponding to the construction scheme, the predicted demand information graphs comprising: an occupied area range graph, a clearance height demand distribution graph of the occupied area range, a foundation load distribution graph and a ground flatness demand graph; The construction operation plan is optimized in combination with the existing information graphs and predicted demand information graphs.

[0007] In combination with the above first aspect, as an optional implementation manner, a construction site terrain surface is extracted according to the location of the simulated construction activity and the width range of the road red line; A contour polygon of the bottom surface of an existing structure model located in the construction site range and a projection polygon of the contour polygon on the site terrain surface are extracted, the ground clearance height is obtained by comparing the vertex heights of the contour polygon and the projection polygon, and a site unit set a1 comprising ground clearance height information is formed by creating site units according to the projection polygon and the ground clearance height; The construction site terrain surface is divided into a plurality of regions according to the site foundation bearing capacity information, the reference measurement point position and in combination with the CIM model, and a site unit set a2 comprising foundation bearing capacity information is created; The construction site terrain surface is divided into a plurality of regions according to the site ground flatness information, the reference measurement point position and in combination with the CIM model, and a site unit set a3 comprising ground flatness information is created; The site unit sets a1 to a3 are fused, and when the geometric shapes of the site units have position overlaps, the overlap region boundaries are solved, and the site units are decomposed and merged according to the overlap region boundaries to form a site unit set A; The existing information graphs corresponding to the site environment are generated using the site unit set A.

[0008] In combination with the above first aspect, as an optional implementation manner, the ground projection shape and clearance height requirement of a scene element having a position change in the construction process are extracted, the scene element comprising a mechanical device, a temporary facility and a prefabricated component; The activity range of the scene element in the construction process is generated according to the ground projection shape of the scene element and the running track of the scene element in the construction process; The corresponding site units are constructed according to the activity range and the clearance height requirement to form a site unit set b1 having process clearance requirement information.

[0009] extracting a ground projection shape, a ground contact pressure and a ground flatness requirement of a ground contact wheel set of a mechanical equipment having a position change during construction, the wheel set including a track and a track of the wheel set; generating a moving range of the wheel set during the construction according to a driving track of the wheel set during the construction and the ground projection shape of the wheel set; constructing a site unit according to the moving range of the wheel set, the ground contact pressure and the ground flatness requirement, forming a site unit set b2 having information of a process foundation bearing capacity and a ground flatness requirement; fusing the site unit sets b1 and b2 and eliminating position overlapping phenomenon in the site unit sets b1 and b2, forming a site unit set B, and generating a predicted requirement information map corresponding to the construction scheme by using the site unit set B.

[0010] In combination with the first aspect, as an optional implementation manner, the engineering information having a mapping relationship in the existing information map and the predicted requirement information map is compared. According to the comparison result, the construction scheme is optimized, including a construction road occupation scheme, a pipeline relocation construction scheme, a site leveling construction scheme and a foundation reinforcement construction scheme.

[0011] In combination with the first aspect, as an optional implementation manner, the construction road occupation scheme, the pipeline relocation construction scheme, the site leveling construction scheme and the foundation reinforcement construction scheme which are optimized and verified are comprehensively accounted for a construction period cost; According to the construction period cost comprehensive accounting result, the construction scheme is optimized again.

[0012] In combination with the first aspect, as an optional implementation manner, a large piece transportation passing plan and a temporary traffic control scheme are generated according to a material supply plan, and a traffic organization scheme and a temporary traffic control scheme during construction are simulated in combination with traffic network change information during construction; The simulation prediction result of the traffic organization scheme and the temporary traffic control scheme is analyzed, and the scheme is optimized.

[0013] In combination with the first aspect, as an optional implementation manner, a scene information model is generated in combination with a bridge site surrounding area CIM model, a bridge BIM model and a construction mechanical movement model; A construction affair graph is constructed according to a construction operation plan and a material supply plan in the construction scheme.

[0014] The second aspect provides a bridge construction scheme optimization device, and the device includes: A generating module is configured to divide a site and generate an existing information map corresponding to a site environment based on a constructed scene information model and a construction affair graph, the existing information map including a site plan, a site clearance height distribution map, a site foundation bearing capacity distribution map and a site flatness distribution map. simulate the construction process by using the scene information model and the construction matter graph to generate a predicted demand information graph corresponding to the construction scheme, the predicted demand information graph comprising: a site range graph, a height clearance demand distribution graph of the site range, a foundation load distribution graph, and a ground flatness demand graph; an optimization module configured to optimize the construction operation plan in combination with the existing information graph and the predicted demand information graph.

[0015] In a third aspect, the present application further provides an electronic device, comprising: a processor; a memory, wherein the memory stores computer readable instructions, and the computer readable instructions are executed by the processor to implement the method in any one of the first aspect.

[0016] In a fourth aspect, the present application further provides a computer readable storage medium, which stores computer program instructions, and the computer program instructions are executed by a computer to make the computer execute the method in any one of the first aspect.

[0017] The bridge construction scheme optimization method, device, equipment and storage medium provided by the present application, wherein the method comprises the steps of: based on the scene information model and the construction matter graph, dividing the site and generating an existing information graph corresponding to the site environment, the existing information graph comprising: a site plan, a site height clearance distribution graph, a site foundation bearing capacity distribution graph and a site flatness distribution graph; simulating the construction process by using the scene information model and the construction matter graph to generate a predicted demand information graph corresponding to the construction scheme, the predicted demand information graph comprising: a site range graph, a height clearance demand distribution graph of the site range, a foundation load distribution graph, and a ground flatness demand graph; and optimizing the construction operation plan in combination with the existing information graph and the predicted demand information graph. The present application can perform multiple rounds of optimization on the construction scheme, and can also effectively prevent the construction scheme optimization activity from deviating from the actual site conditions and improve the quality of the construction scheme optimization.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0020] Figure 1 A bridge construction scheme optimization method flowchart provided in an embodiment of the present application; Figure 2 A bridge construction scheme optimization device schematic diagram provided in an embodiment of the present application; Figure 3A bridge construction scheme optimization schematic diagram provided in an embodiment of the present application is shown in FIG. 1. Figure 4 A schematic diagram of an electronic device provided in an embodiment of the present application is shown in FIG. 2. Figure 5 A schematic diagram of a computer readable program medium provided in an embodiment of the present application is shown in FIG. 3. DETAILED DESCRIPTION

[0021] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.

[0022] In addition, the drawings are merely schematic and are not necessarily drawn to scale. Some of the blocks in the drawings represent functional entities that can not necessarily correspond to physically or logically separate entities.

[0023] The embodiments of the present application will be further described in detail with reference to the accompanying drawings.

[0024] Reference Figure 1 , Figure 1 A bridge construction scheme optimization method flow chart provided in the present application is shown in FIG. 1. As shown in FIG. 1, the method comprises the steps of: Figure 1 Step S101: Based on the constructed scene information model and the construction activity graph, the site is divided and the existing information graph corresponding to the site environment is generated, the existing information graph comprising: a site plan, a site clearance height distribution graph, a site foundation bearing capacity distribution graph and a site flatness distribution graph.

[0025] Specifically, according to the location of the simulated construction activity and the width range of the road red line, the construction site terrain surface is extracted; The contour polygon of the existing structure model bottom surface located in the construction site range and its projection polygon on the site terrain surface are extracted, the vertex height of the contour polygon and the projection polygon is compared to obtain the ground clearance height, and the site unit is created according to the projection polygon and the ground clearance height, forming a site unit set a1 comprising ground clearance height information; According to the site foundation bearing capacity information, the reference measurement point position and in combination with the CIM model, the construction site terrain surface is divided into several regions, and a site unit set a2 comprising foundation bearing capacity information is created; ​According to the site ground flatness information, the reference measurement point position and in combination with the CIM model, the construction site terrain surface is divided into several regions, and a site unit set a3 including the ground flatness information is created; The site unit sets a1-a3 are fused, and when the geometric shapes of the site units have position overlaps, the overlapping region boundaries are solved, and the site unit decomposition and merging are performed according to the overlapping region boundaries to form a site unit set A; The site unit set A is used to generate the existing information map corresponding to the site environment.

[0026] It can be understood that the city assembly type bridge construction scene model is built in combination with the bridge site surrounding area CIM model, the bridge under construction BIM model and the construction machinery motion model.

[0027] Specifically, the city assembly type bridge construction scene model is built by using UE (Unreal Engine) software. The bridge site surrounding area CIM model is: a three-dimensional map derived from an open platform is used, and model labeling, model supplementing and model error correction are performed according to field survey information; the construction machinery motion model is: a skeleton animation model of the construction machinery is used, the construction machinery motion is simulated by setting key frames, and the key frames are set by using an artificial method combined with construction experience. The CIM model is a three-dimensional digital space city information complex integrating city above and underground, indoor and outdoor, historical and current, future multi-dimensional and multi-scale information model data and city perception data based on BIM, GIS, IoT and other technologies. The site information in the BIM model is generally derived from field measurement data and design file conversion information related only to the construction project, that is, the information range contained in the BIM is generally limited by the “building”, compared with which, the CIM model has the advantage of saving field measurement cost, and can more comprehensively reflect the complex urban environment.

[0028] According to the construction operation plan and the material supply plan in the construction scheme, a construction affair graph reflecting the construction process of the city assembly type bridge is constructed. That is, a bridge construction scheme is prepared by using a system analysis method, and according to the construction scheme, a construction affair graph reflecting the construction process of the city assembly type bridge is constructed in the form of a mind map and a knowledge graph.

[0029] The city assembly type bridge construction scene information model and the construction affair graph are used to divide site units and generate initial information; the site units are used to store the position, shape and engineering information of a certain site block during site analysis, including geometric shape and engineering attribute, and the geometric shape is a plane polygon without holes; a site unit set A with initial information is formed; the site unit set A is used to generate a site existing information map, which can include a site plan, a site clearance height distribution map, a site foundation bearing capacity distribution map and a site flatness distribution map.

[0030] In an embodiment, the implementation is developed in combination with UE software-based programming. The site foundation bearing capacity and ground flatness are evaluated using evaluation values, wherein the ground flatness is in the form of a grade. In terms of foundation bearing capacity, the area is divided in combination with the topographic information in the CIM model, 600 kPa is used for existing motor vehicle lanes, 220 kPa is used for existing non-motor vehicle lanes, 100 kPa is used for existing pedestrian walkways and demolition sites, and 5 kPa is used for existing green belts. In terms of ground flatness, the area is divided in combination with the topographic information in the CIM model, 0 grade is used for existing motor vehicle lanes and non-motor vehicle lanes, representing that the ground flatness meets the needs of vehicle driving and support erection; 1 grade is used for the remaining land, representing that the ground flatness does not meet the needs of vehicle driving, but meets the needs of support erection; 2 grade is used for water area sites such as rivers, ditches, and lake surfaces, representing that the ground flatness does not meet the needs of vehicle driving and support erection. For units in the a1 set of site units that have shape overlap, the ground clearance height information in the overlapping area is taken as the minimum value when merging.

[0031] It can be understood that this step is to obtain the site environment information, and then compare it with the demand information obtained through subsequent simulation to optimize the scheme.

[0032] Step S102: Simulating the construction process by using the scene information model and the construction process graph to generate a predicted demand information graph corresponding to the construction scheme, the predicted demand information graph including: a site occupation range graph, a clearance height demand distribution graph of the site occupation range, a foundation load distribution graph, and a ground flatness demand graph.

[0033] Specifically, the ground projection shape and the clearance height requirement of the scene element having a position change in the construction process are extracted, the scene element including a mechanical equipment, a temporary facility, and a prefabricated component; The activity range of the scene element in the construction process is generated according to the ground projection shape and the running track of the scene element in the construction process; The corresponding site unit is constructed according to the activity range and the clearance height requirement, forming a site unit set b1 with process clearance requirement information.

[0034] The ground projection shape, the ground contact pressure, and the ground flatness requirement of the mechanical equipment landing wheel set having a position change in the construction process are extracted, the wheel set including a track and a track of the wheel set; The activity range of the wheel set in the construction process is generated according to the driving track of the wheel set in the construction process in combination with the ground projection shape of the wheel set; The site unit is constructed according to the activity range of the wheel set, the ground contact pressure, and the ground flatness requirement, forming a site unit set b2 with process foundation bearing capacity and ground flatness demand information; Fuse the site unit sets b1 and b2, eliminate the position overlap phenomenon in them, form a site unit set B, and generate the predicted demand information map corresponding to the construction scheme by using the site unit set B.

[0035] It can be understood that the construction process is simulated by using the construction scheme graph and the city fabricated bridge construction scene information model, and the spatio-temporal interference problems and material supply problems that may exist in the construction process are analyzed; the site unit set B with construction process demand information is generated according to the site demand of the construction process; the site demand information map is generated by using the site unit set B, which can include the site occupation range map and the height clearance demand distribution map, the foundation load distribution map and the ground flatness demand map of the site occupation range. Specifically, the key frame method is used to simulate the movement of construction machinery, and the key frame is set by using the artificial method combined with construction experience. When the existing construction experience is not enough to determine the safety or movement trajectory of the bridge component or construction machinery in the construction process, the structure analysis software or motion simulation software is used for analysis, and then the key frame is set according to the analysis result.

[0036] It can be understood that this step is to obtain a simulation prediction result and optimize the scheme based on the prediction result.

[0037] Step S103: optimizing the construction operation plan by combining the existing information map and the predicted demand information map.

[0038] Comparing the engineering information with a mapping relationship in the existing information map and the predicted demand information map; According to the comparison result, the construction scheme is optimized, which includes the construction road occupation scheme, the pipeline relocation construction scheme, the site leveling construction scheme and the foundation reinforcement construction scheme.

[0039] For the convenience of understanding and illustration, taking the number of construction road occupation as an example: 1. Set the construction scheme as closed construction, that is, occupying all the lanes of the construction road; 2. Set the bridge construction simulation result as good, but the traffic simulation result as poor (serious traffic congestion around) 3. The construction scheme is adjusted to semi-closed construction by manual optimization, that is, occupying 1 / 2 of the construction road 4. Set the bridge construction simulation result as poor (there are serious difficulties or a large increase in cost), and the traffic simulation result as good (no traffic congestion around) 5. The construction scheme is adjusted to occupy 3 / 4 of the construction road by manual optimization. 6. Set the bridge construction simulation result as medium (there are difficulties but can be overcome, and the cost is controllable), and the traffic simulation result as good (lighter traffic congestion around) 7. The construction scheme is confirmed to be optimized by manual optimization.

[0040] In an embodiment, the optimized and verified construction occupation scheme, pipeline relocation construction scheme, site leveling construction scheme and foundation reinforcement construction scheme are subjected to construction period cost comprehensive accounting; the construction scheme is optimized again according to the construction period cost comprehensive accounting result.

[0041] In an embodiment, the large piece transportation passing plan and temporary traffic control scheme are generated according to the material supply plan, and the traffic organization scheme and temporary traffic control scheme during construction are simulated in combination with the traffic network change information during construction; The simulation prediction result of the traffic organization scheme and temporary traffic control scheme is analyzed, and the scheme is optimized.

[0042] Specifically, the large piece transportation passing plan and temporary traffic control scheme are generated according to the material supply plan, and the traffic organization scheme and temporary traffic control scheme during construction are simulated in combination with the traffic network change information during construction by using a regional traffic flow simulation model, the municipal traffic congestion problem existing in the simulation analysis result is optimized, and the traffic organization scheme during construction, large piece transportation passing plan and temporary traffic control scheme are optimized. Specifically, the occupation construction will inevitably cause the increase of traffic flow of the surrounding traffic network, and the traffic is dredged during construction by taking measures such as pre-issuing traffic control measures announcements, arranging signboards, adjusting traffic signals, and the like, so as to maximize the possibility of reducing the occurrence of serious traffic congestion. When the above measures cannot obtain satisfactory traffic simulation results, the bridge construction scheme is optimized by manual work combined with engineering experience.

[0043] As can be seen from the above, the method of the present application uses a site unit to record the engineering properties of different site blocks in detail, and combines decomposition, merging and comparison of the site unit shape and engineering properties to derive a site property distribution map which has important guiding significance for construction scheme optimization activities. The method of the present application is always closely combined with the actual situation on site in the process of analyzing the construction scheme, has the beneficial effects of preventing the construction scheme optimization activities from deviating from the actual conditions on site and improving the quality of the construction scheme optimization. The method of the present application imports the existing information of the urban environment from the CIM system, and acquires and imports the regional traffic information from the local traffic management department, which makes up for the defects of insufficient information reflecting the urban environment and urban traffic activities in the BIM model; the present application simulates from different angles such as bridge construction and urban traffic activities, which can comprehensively reflect the restriction and interference of the urban environment on the bridge construction activities, and comprehensively reflect the influence and interference of the construction activities on the urban activities.

[0044] Referring to Figure 2 , Figure 2 Fig. 1 shows a bridge construction scheme optimization device provided by the present application, and as shown in Fig. 2, the device comprises: Figure 2 ​The generating module 201 is configured to divide the site and generate existing information maps corresponding to the site environment based on the built scene information model and the construction process graph, wherein the existing information maps include a site plan, a site clearance height distribution map, a site foundation bearing capacity distribution map, and a site flatness distribution map.

[0045] The simulation module 202 is configured to simulate the construction process by using the scene information model and the construction process graph to generate predicted demand information maps corresponding to the construction plan, wherein the predicted demand information maps include an occupied area range map, a clearance height demand distribution map of the occupied area range, a foundation load distribution map, and a ground flatness demand map.

[0046] The optimization module 203 is configured to optimize the construction operation plan in combination with the existing information maps and the predicted demand information maps.

[0047] Further, in a possible implementation, the generating module is further configured to extract a construction site terrain surface according to a location of a simulated construction activity and a road red line width range; extract a contour polygon of a bottom surface of an existing structure model located in the construction site range and a projection polygon of the contour polygon on the site terrain surface, compare vertex heights of the contour polygon and the projection polygon to obtain a ground clearance height, and create a site unit according to the projection polygon and the ground clearance height to form a site unit set a1 including ground clearance height information; divide the construction site terrain surface into a plurality of regions according to site foundation bearing capacity information, a reference measurement point position, and in combination with a CIM model, and create a site unit set a2 including foundation bearing capacity information; divide the construction site terrain surface into a plurality of regions according to site ground flatness information, a reference measurement point position, and in combination with a CIM model, and create a site unit set a3 including ground flatness information; fuse the site unit sets a1 to a3, and when geometric shapes of site units have position overlaps, solve an overlap region boundary, and perform decomposition and merging of the site units according to the overlap region boundary to form a site unit set A; generate existing information maps corresponding to the site environment by using the site unit set A.

[0048] Further, in a possible implementation, the simulation module is further configured to extract a ground projection shape and a clearance height requirement of a scene element having a position change in a construction process, wherein the scene element includes a mechanical device, a temporary facility, and a prefabricated component; generate an activity range of the scene element in the construction process according to the ground projection shape and a running track of the scene element in the construction process; construct a corresponding site unit according to the activity range and the clearance height requirement to form a site unit set b1 having process clearance requirement information.

[0049] extracting ground projection shape, ground contact pressure and ground flatness requirement of a mechanical equipment landing wheel set having position change during construction, the wheel set comprising a track and a caterpillar of the wheel set; generating a moving range of the wheel set during construction according to the driving track of the wheel set during construction in combination with the ground projection shape of the wheel set; constructing a site unit according to the moving range of the wheel set, the ground contact pressure and the ground flatness requirement, forming a site unit set b2 having process foundation bearing capacity and ground flatness requirement information; fusing the site unit sets b1 and b2 and eliminating position overlapping phenomenon therein, forming a site unit set B, and generating a predicted requirement information map corresponding to the construction scheme by using the site unit set B.

[0050] Further, in a possible implementation, the optimization module is further configured to compare engineering information having a mapping relationship in the existing information map and the predicted requirement information map; optimizing the construction scheme according to the comparison result, which comprises a construction road occupation scheme, a pipeline relocation construction scheme, a site leveling construction scheme and a foundation reinforcement construction scheme.

[0051] Further, in a possible implementation, the optimization module is further configured to perform a construction period cost comprehensive accounting on the optimized and verified construction road occupation scheme, pipeline relocation construction scheme, site leveling construction scheme and foundation reinforcement construction scheme; optimizing the construction scheme again according to the construction period cost comprehensive accounting result.

[0052] Further, in a possible implementation, the optimization module is further configured to generate a large piece transportation passing plan and a temporary traffic control scheme according to the material supply plan, and simulate a traffic organization scheme and the temporary traffic control scheme during construction in combination with traffic network change information during construction; analyzing the simulation prediction result of the traffic organization scheme and the temporary traffic control scheme, and optimizing the schemes.

[0053] Further, in a possible implementation, the generation module is further configured to generate a scene information model in combination with a bridge site surrounding area CIM model, a bridge BIM model and a construction mechanical movement model; constructing a construction affair graph according to a construction operation plan and a material supply plan in the construction scheme.

[0054] Referring to Figure 3 , Figure 3 Fig. 2 shows a bridge construction scheme optimization schematic diagram provided by the present application, as shown in Figure 3 Fig. 3 shows a bridge construction scheme optimization schematic diagram provided by the present application, as shown in 1: Build a city assembly bridge construction scene model by combining the bridge site surrounding area CIM model, the bridge under construction and temporary facility BIM model, and the construction machinery movement model; Specifically, the UE (Unreal Engine) software is used to build a city assembly bridge construction scene model. The bridge site surrounding area CIM model is derived from a three-dimensional map from an open platform, and the model is labeled, supplemented, and corrected according to the field survey information. The construction machinery movement model uses the skeletal animation model of construction machinery, simulates the movement of construction machinery by setting key frames, and sets the key frames by artificial methods combined with construction experience. The CIM model is a three-dimensional digital space city information complex that integrates city above and underground, indoor and outdoor, historical and current, and multi-dimensional and multi-scale information model data and city perception data based on BIM, GIS, IoT, etc. The site information in the BIM model is generally derived from field measurement data and design file conversion information. Compared with this, using the CIM model has the advantage of saving field measurement cost and can better reflect the complex urban environment.

[0055] 2: Build a regional traffic flow simulation analysis model by combining the traffic network information of the bridge site surrounding area, the time-sharing traffic flow information, and the traffic control optimization algorithm.

[0056] 3: According to the construction operation plan and material supply plan in the construction scheme, a construction affair graph reflecting the construction process of the city assembly bridge is constructed; Specifically, the construction scheme is prepared by using a system analysis method. According to the construction scheme, a construction affair graph reflecting the construction process of the city assembly bridge is constructed in the form of mind map and knowledge graph.

[0057] 4: Use the city assembly bridge construction scene information model and the construction affair graph to divide the site units and generate initial information; the site units are used to analyze and store the position, shape, and engineering information of the corresponding site block, including geometric shape and engineering attribute, and the geometric shape is a plane polygon without holes; a set of site units A with initial information is formed; use the set of site units A to generate site existing information graph, including site plan, site clearance height distribution graph, site foundation bearing capacity distribution graph, and site flatness distribution graph; 4.1: Extract the construction site terrain surface according to the location of the simulated construction activity and the road red line width range; 4.2: Extract the contour polygon of the existing structure model bottom surface located within the construction site range and its projection polygon on the site terrain surface, compare the vertex heights of the contour polygon and the projection polygon to obtain the ground clearance height, and create a site unit according to the projection polygon and the ground clearance height to form a set of site units a1 including ground clearance height information; 4.3: According to the site foundation bearing capacity site survey information, reference the measurement point position and combine the CIM model, the construction site terrain surface is divided into several regions, and the site unit set a2 including foundation bearing capacity information is created; 4.4: According to the site ground flatness survey information, reference the measurement point position and combine the CIM model, the construction site terrain surface is divided into several regions, and the site unit set a3 including ground flatness information is created; 4.5: Merge the site unit sets a1-a3 and eliminate the position overlap phenomenon in them; when the geometric shapes of two site units have position overlap, first solve the boundary of the overlapping region, and then perform site unit decomposition and merging according to the boundary of the overlapping region; after completion, the site unit set A with initial information is formed.

[0058] Specifically, the site foundation bearing capacity and the ground flatness adopt evaluation values, and the ground flatness adopts a level form. In terms of foundation bearing capacity, the regions are divided in combination with the topographic information in the CIM model, 600 kPa is adopted for existing motor vehicle lanes, 220 kPa is adopted for existing non-motor vehicle lanes, 100 kPa is adopted for existing pedestrian paths and demolition sites, and 5 kPa is adopted for existing green belts. In terms of ground flatness, the regions are divided in combination with the topographic information in the CIM model, 0 level is adopted for existing motor vehicle lanes and non-motor vehicle lanes, representing that the ground flatness meets the needs of vehicle driving and support erection; 1 level is adopted for the remaining land, representing that the ground flatness does not meet the needs of vehicle driving, but meets the needs of support erection; 2 level is adopted for river, ditch, lake and other water area sites, representing that the ground flatness does not meet the needs of vehicle driving and support erection. In the site unit set a1, the ground clearance height information of the overlapping region is taken as the minimum value when the overlapping units are merged.

[0059] 5: The construction process is simulated by using the construction affair graph and the urban fabricated bridge construction scene information model, and the possible spatiotemporal interference problems and material supply problems are analyzed; the site unit set B with construction process demand information is generated according to the site demand of the construction process; the site demand information graph is generated by using the site unit set B, including the occupied range graph and the clearance height demand distribution graph of the occupied range, the foundation load distribution graph and the ground flatness demand graph; Specifically, the motion of the construction machinery is simulated by setting key frames, and the key frames are set in an artificial manner combined with construction experience. When the existing construction experience is not enough to determine the safety or motion trajectory of the bridge components or construction machinery in the construction process, the structure analysis software or motion simulation software is used for analysis, and then the key frames are set according to the analysis results.

[0060] 5.1: Extract the ground projection shape and the clearance height requirement of the scene elements with position changes in the construction process, the scene elements including mechanical equipment, temporary facilities and prefabricated components, generate the activity range of the scene elements in the construction process according to the ground projection shape and the running track of the scene elements in the construction process, construct the corresponding site unit according to the activity range and the clearance height requirement, and form the site unit set b1 with process clearance requirement information.

[0061] S5.2: Extract the ground projection shape, ground contact pressure and ground flatness requirement of the mechanical equipment landing wheel group with position changes in the construction process, the wheel group including the track, track and other supporting pad structures of the wheel group, generate the activity range of the wheel group in the construction process according to the driving track of the wheel group in the construction process combined with the ground projection shape of the wheel group, construct the site unit according to the activity range of the wheel group, ground contact pressure and ground flatness requirement, and form the site unit set b2 with process foundation bearing capacity and ground flatness requirement information.

[0062] 5.3: Merge the site unit sets b1 and b2 and eliminate the position overlap in them, form the site unit set B with process information; 6: Optimize the construction operation plan for the space-time interference problem, optimize the material supply plan for the material supply problem, optimize the construction operation plan combined with the existing information map of the site and the site requirement information map; repeat steps 3-6 until the construction process simulation result is satisfactory; 7: Optimize the surrounding traffic organization and traffic network change scheme, foundation reinforcement construction scheme, site leveling construction scheme, pipeline relocation construction scheme during construction; Specifically, according to the existing information map of the site and the site requirement information map, combined with engineering experience, the schemes of surrounding traffic organization, traffic network change, foundation reinforcement, site leveling and pipeline relocation are proposed.

[0063] 8: Generate the large piece transportation pass plan and temporary traffic control scheme according to the material supply plan, combine the traffic network change information during construction, and simulate the traffic organization scheme and temporary traffic control scheme during construction by using regional traffic flow simulation model.

[0064] 9: Optimize the traffic organization scheme during construction, large piece transportation pass plan and temporary traffic control scheme for the municipal traffic congestion problem existing in the simulation analysis result of step 8; repeat steps 8-9 until the simulation result is satisfactory.

[0065] Specifically, the occupation construction will inevitably cause the increase of traffic flow in the surrounding traffic network, and the measures such as pre-issuing traffic control measures notice, arranging signboards, adjusting traffic signals and other measures are taken for traffic dredging during construction to maximize the possibility of serious traffic congestion. When the above measures cannot obtain satisfactory traffic simulation results, return to step 3.

[0066] 10: Time and cost comprehensive accounting is performed for the optimized and verified construction occupation scheme, site reinforcement scheme, site leveling scheme, and pipeline relocation scheme; the time and cost comprehensive accounting is completed by manual work combined with engineering experience.

[0067] 11: The construction scheme is further optimized according to the time and cost comprehensive accounting result, and steps 3 to 11 are repeatedly executed until the comprehensive accounting result is satisfactory.

[0068] The electronic device 400 according to this embodiment of the present application will be described below with reference to Figure 4 Figure 4 The electronic device 400 shown is merely an example and should not impose any limitation on the functions and use range of the embodiments of the present application.

[0069] As shown in Figure 4 , the electronic device 400 is in the form of a general computing device. The components of the electronic device 400 can include, but are not limited to, the at least one processing unit 410, the at least one storage unit 420, and a bus 430 connecting different system components, including the storage unit 420 and the processing unit 410.

[0070] The storage unit stores program codes which can be executed by the processing unit 410, so that the processing unit 410 performs the steps according to various exemplary embodiments of the present application described in the above “Embodiment Method” section of the present specification.

[0071] The storage unit 420 can include a readable medium in the form of a volatile storage unit, such as a random access memory (RAM) 421 and / or a cache memory 422, and can further include a read-only memory (ROM) 423.

[0072] The storage unit 420 can further include program / utility 424 having a set of the program modules 425, including but not limited to, an operating system, one or more application programs, other program modules, and program data, and each of these examples or some combination thereof can include implementation of a network environment.

[0073] The bus 430 can represent one or more of several types of bus structures, including a storage unit bus or storage unit controller, a peripheral bus, a graphics acceleration port, a processing unit bus, or a local bus using any of a variety of bus architectures.

[0074] ​​The electronic device 400 can also communicate with one or more external devices such as a keyboard or a pointing device, a Bluetooth device, etc., and can also communicate with one or more devices that enable a user to interact with the electronic device 400 and / or one or more devices that enable the electronic device 400 to communicate with one or more other computing devices. Such communication can occur via Input / Output (I / O) interface 450. Also, the electronic device 400 can communicate with one or more networks such as a local area network (LAN), a wide area network (WAN), and / or the Internet via the network adapter 460. As depicted, the network adapter 460 communicates with the other components of the electronic device 400 via the bus 430. It should be appreciated that although not shown, other hardware and / or software modules could be used in connection with the electronic device 400. These include, but are not limited to, microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0075] From the above description of the embodiments, those skilled in the art will readily appreciate that the example embodiments described herein can be implemented by software and / or by hardware coupled with software. Accordingly, the technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash disk, a mobile hard disk, etc.) or a network, and includes a number of instructions for causing a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to perform the methods according to the embodiments of the present disclosure.

[0076] According to the solutions of the present disclosure, a computer readable storage medium is also provided, which stores the program product capable of implementing the above-mentioned methods. In some possible embodiments, various aspects of the present disclosure can also be implemented in the form of a program product, which includes program codes for causing a terminal device to perform the steps according to various example embodiments of the present disclosure described in the above-mentioned “example method” section when the program product is run on the terminal device.

[0077] Reference Figure 5 As shown, the program product 500 for implementing the above-mentioned methods according to the embodiments of the present disclosure is described, which can adopt a portable compact disc read-only memory (CD-ROM) and includes program codes, and can be run on a terminal device such as a personal computer. However, the program product of the present disclosure is not limited to this, and in this document, the readable storage medium can be any tangible medium containing or storing a program, which can be used by or in conjunction with an instruction execution system, device or apparatus.

[0078] The program product can employ any combination of one or more computer-readable media. The computer-readable media can be a computer-readable storage medium or a computer-readable signal medium. The computer-readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium include the following: an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0079] The computer-readable signal medium can include a computer-readable storage medium that is propagated as a carrier wave. The computer-readable signal medium can further be any computer-readable medium that is not a storage medium. The computer-readable signal medium can be a computer-readable storage medium that is a propagated signal on a computer-readable storage medium.

[0080] The program code embodied on the computer-readable media can be transmitted using any appropriate medium, including but not limited to wireless, wired, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0081] The program code can be executed by one or more programmable processors, which can be implemented in one or more computer devices including any combination of a microprocessor, a microcontroller, a digital signal processor, or other processing circuitry. The program code can be written in any combination of one or more programming languages, including an object-oriented programming language such as Java, C++, or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer device, partly on the user's computer device, as a stand-alone software package, partly on the user's computer device and partly on a remote computer device or entirely on the remote computer device or server. In the latter scenario, the remote computer device can be connected to the user's computer device through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider). The program code can also be written in a combination of one or more programming languages, including an object-oriented programming language and a conventional procedural programming language.

[0082] Furthermore, the above-described diagrams are merely schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not intended for limiting purposes. It is readily understood that the processes shown in the above-described diagrams do not indicate or limit the time sequence of the processes. In addition, it is readily understood that the processes can be executed synchronously or asynchronously, for example, in a plurality of modules.

[0083] The foregoing detailed description of the application has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed, and various modifications and variations are possible in light of the above teachings or can be acquired from practice of the application. The

[0084] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of Figure 1 The flow diagram and / or block diagram in this disclosure can represent one or more of any appropriate circuitry configured to perform the specified functions. In this regard, each flow and / or block in the flow diagram and / or block diagram can represent a module, segment, or portion of code which comprises one or more executable instructions to implement the specified logical function(s). It should also be noted that each flow and / or block can represent a mechanism to Figure 1 The flow diagram and / or block diagram in this disclosure can represent one or more of any appropriate circuitry configured to perform the specified functions. In this regard, each flow and / or block in the flow diagram and / or block diagram can represent a module, segment, or portion of code which comprises one or more executable instructions to implement the specified logical function(s). It should also be noted that each flow and / or block can represent a mechanism to

Claims

1. A method for optimizing bridge construction schemes, characterized in that, include: Based on the construction scene information model and construction principle diagram, the site is divided and existing information maps corresponding to the site environment are generated. The existing information maps include: site plan, site clearance height distribution map, site foundation bearing capacity distribution map and site flatness distribution map. The construction process is simulated using the scenario information model and construction process diagram to generate a predicted demand information map corresponding to the construction plan. The predicted demand information map includes: a land area map, a net height demand distribution map of the land area, a foundation load distribution map, and a ground flatness demand map. The construction operation plan is optimized by combining the existing infographics and the predicted demand infographics.

2. The method according to claim 1, characterized in that, The construction-based scene information model and construction process diagram divide the site and generate existing information maps corresponding to the site environment, including: Based on the location of the simulated construction activity and the width of the road right-of-way, the topographic surface of the construction site is extracted; Extract the bottom outline polygon of the existing structure model located within the construction site area and its projected polygon on the site topography. Compare the vertex heights of the outline polygon and the projected polygon to obtain the ground clearance height. Create site units based on the projected polygon and the ground clearance height to form a site unit set a1 that includes ground clearance height information. Based on the site's foundation bearing capacity information, reference measurement point locations, and in conjunction with the CIM model, the construction site topography is divided into several areas, and a site unit set a2 containing foundation bearing capacity information is created. Based on the site flatness information, reference measurement point locations, and combined with the CIM model, the construction site topography is divided into several areas, and a site unit set a3 including ground flatness information is created. The site unit sets a1~a3 are merged, and when the geometry of the site units overlaps, the boundary of the overlapping area is solved. The site units are decomposed and merged according to the boundary of the overlapping area to form the site unit set A. Use site unit set A to generate existing information maps corresponding to the site environment.

3. The method according to claim 1, characterized in that, The process of simulating the construction process using the scenario information model and construction event graph to generate a predicted demand information graph corresponding to the construction plan includes: Extract the ground projection shape and clearance height requirements of scene elements whose positions change during construction. The scene elements include mechanical equipment, temporary facilities and prefabricated components. The activity range of scene elements during construction is generated based on their ground projection shape and their movement trajectory during construction. Based on the activity scope and clearance height requirements, corresponding site units are constructed to form a site unit set b1 with process clearance requirement information. Extract the ground projection shape, ground pressure, and ground flatness requirements of the mechanical equipment's ground-touching wheel set that changes position during construction. The wheel set includes the wheel set's track and track. Based on the travel trajectory of the wheelset during construction and the ground projection shape of the wheelset, the range of motion of the wheelset during construction is generated; Based on the wheel set's activity range, ground pressure, and ground flatness requirements, site units are constructed to form a site unit set b2 with process foundation bearing capacity and ground flatness requirements information; The site unit sets b1 and b2 are merged and their overlapping positions are eliminated to form site unit set B. Site unit set B is then used to generate a predicted demand information map corresponding to the construction plan.

4. The method according to claim 1, characterized in that, The optimization of the construction operation plan by combining the existing information map and the predicted demand information map includes: Compare the engineering information that has a mapping relationship between the existing information map and the predicted demand information map; Based on the comparison results, the construction plan was optimized, including the construction road occupation plan, pipeline relocation plan, site leveling plan, and foundation reinforcement plan.

5. The method according to claim 4, characterized in that, Also includes: A comprehensive cost-benefit analysis of the construction period was conducted for the optimized and validated construction road occupation plan, pipeline relocation plan, site leveling plan, and foundation reinforcement plan. The construction plan was further optimized based on the comprehensive cost and schedule calculation results.

6. The method according to claim 1, characterized in that, Also includes: Based on the material supply plan, generate a traffic plan for the transportation of large items and a temporary traffic control plan. Combined with information on changes in the traffic network during construction, simulate the traffic organization plan and temporary traffic control plan during construction. The simulation prediction results of the traffic organization scheme and temporary traffic control scheme are analyzed, and the scheme is optimized.

7. The method according to claim 1, characterized in that, Before the construction-based scene information model and construction process diagram are used to divide the site and generate existing information maps corresponding to the site environment, the following steps are included: By combining the CIM model of the area surrounding the bridge site, the BIM model of the bridge, and the motion model of the construction machinery, a scene information model is generated; Based on the construction operation plan and material supply plan in the construction scheme, construct a construction process diagram.

8. A bridge construction scheme optimization device, characterized in that, include: The generation module is used to divide the site and generate existing information maps corresponding to the site environment based on the construction scene information model and construction principle map. The existing information maps include: site plan, site clearance height distribution map, site foundation bearing capacity distribution map and site flatness distribution map. The simulation module is used to simulate the construction process using the scene information model and construction process diagram to generate a predicted demand information map corresponding to the construction plan. The predicted demand information map includes: a land area map, a net height demand distribution map of the land area, a foundation load distribution map, and a ground flatness demand map. The optimization module is used to optimize the construction operation plan by combining the existing information map and the predicted demand information map.

9. An electronic device, characterized in that, The electronic device includes: processor; A memory storing computer-readable instructions that, when executed by the processor, implement the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores computer program instructions that, when executed by a computer, cause the computer to perform the method according to any one of claims 1 to 7.

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