A finite element-based structural construction process simulation analysis method and system

Abstract

The present invention belongs to the technical field of structural construction simulation analysis, and specifically provides a method and system for simulating and analyzing the structural construction process based on finite elements, wherein the method includes: simulating the construction site by using the method of layer-by-layer shaping of structural rigidity and layer-by-layer loading of vertical loads to model the construction of super-high-rise buildings; analyzing the vertical deformation and lateral deformation of the models at different construction stages; analyzing the stress of vertical components and cantilever trusses at different construction stages; analyzing the closing of cantilever trusses at different construction stages; analyzing the pre-adjustment value of steel component installation at different construction stages. By simulating the construction site by using the method of layer-by-layer shaping of structural rigidity and layer-by-layer loading of vertical loads, the construction of super-high-rise buildings is simulated, and after electronic calculation analysis, the vertical structure elevation is pre-adjusted according to the electronic calculation prediction value, and the on-site pre-adjustment is performed according to the electronic calculation result, and then the monitoring result is used to determine whether the pre-adjustment value needs to be corrected.

Description

Technical Field

[0001] The present invention relates to the technical field of structural construction simulation analysis, and more specifically, to a structural construction process simulation analysis method and system based on finite element. Background Art

[0002] Super high-rise buildings have developed rapidly in China, with qualitative changes in both quantity and height. With the continuous increase in height, a series of new problems have emerged in construction that need special attention and resolution. 1. The importance of construction process simulation is highlighted. The traditional structural design method only analyzes the effects of the structure under different working conditions and their combined effects in the use stage. The structure is modeled once and loaded as a whole at one time, without considering the influence of the construction process and time effect. In fact, the structure is a time-varying system during the entire construction process. The material parameters, geometric parameters, and load boundary conditions of the structure change with the progress of construction. The internal force and deformation of the completed structure are also the cumulative results of the effects of each construction step. Especially for large super high-rise structures, the construction period is long, and the vertical deformation is greatly affected by the construction process and time effect. Deformation analysis based only on traditional analysis methods cannot accurately reflect the actual situation. Therefore, it is necessary to track and simulate the construction process and study the vertical deformation law during the structural construction process.

[0003] During the construction of super-high-rise structures above 300 meters, deformation, shrinkage and creep of concrete will cause vertical deformation of the outer frame steel columns and core tubes, and deformation differences will occur due to inconsistent deformation. Therefore, it is necessary to predict the vertical deformation and give a pre-adjustment value to guide on-site construction. The conventional practice is to set a pre-adjustment value based on experience to guide on-site construction. In the traditional super-high-rise construction process, it is impossible to detect the structure and adjust the construction rhythm, and there is no better pre-construction analysis method. Summary of the invention

[0004] The present invention aims to solve the technical problem in the prior art that the structure cannot be detected and the construction rhythm cannot be adjusted before the super-high-rise construction process.

[0005] The present invention provides a structural construction process simulation analysis method based on finite element, comprising the following steps:

[0006] S1, simulates the construction site by adopting the method of layer-by-layer shaping of structural stiffness and layer-by-layer loading of vertical loads to model the construction of super-high-rise buildings;

[0007] S2, analyze the vertical and lateral deformation of the model at different construction stages;

[0008] S3, stress analysis of vertical components and outrigger trusses of the models at different construction stages;

[0009] S4, outrigger truss closure analysis was performed on the models at different construction stages;

[0010] S5, analyze the pre-adjustment values ​​of steel component installation for models at different construction stages.

[0011] Preferably, S1 specifically includes: using finite element software Midas Gen to establish a whole-process model of structural construction according to the construction schedule, using a time-varying model of concrete compressive strength and a shrinkage creep model, and considering the structural deadweight, construction load, reduced wind load and seismic load.

[0012] Preferably, the S2 specifically includes:

[0013] S21, according to the divided construction steps, define the corresponding structure group, load group, and boundary group of each construction step, activate or deactivate the construction step, and simulate the construction process;

[0014] S22, calculate the vertical deformation of each floor during the construction stage, completion time and commissioning stage, and compare the vertical deformation of the structure under one-time loading, without considering shrinkage and creep, and considering shrinkage and creep;

[0015] S23, analyze the distribution of vertical deformation difference between core tube and outer frame giant columns along the floors at different construction stages;

[0016] S24, based on the vertical deformation analysis results, obtain the reserved height of the floor elevation and the reserved length of the floor vertical component line to compensate for the compression deformation of the component, so that the elevation and floor height of each floor reach the design value at the set time and meet the building use requirements;

[0017] S25, calculate the inter-story displacement angle of the structure under the corresponding wind load and seismic load during the construction phase, as well as whether the horizontal displacement values ​​of the tower top and each reinforced layer meet the requirements of the specification.

[0018] Preferably, the S3 specifically includes:

[0019] S31, when establishing the whole process model of structural construction, the loads borne by the structure at different stages are considered, and boundary conditions are defined to reflect the actual stress conditions of the structure;

[0020] S32, calculate and analyze the axial compression ratio, bearing capacity, and shear force distribution of the core tube wall and frame columns of the model;

[0021] S33, each reinforcement layer is selected as the object of numerical analysis, and the stress changes of the core tube, outer frame giant column, waist truss and outrigger truss at each construction stage are examined to provide a basis for construction monitoring.

[0022] Preferably, the S4 specifically includes:

[0023] S41, first examine whether the lateral stiffness and overall stability of the model at each construction stage when the outrigger truss is not closed meet the requirements, and determine the latest closing time of the outrigger truss;

[0024] S42, analyzing the change of the additional stress of the outrigger truss under different outrigger truss closing conditions at each construction stage of the model, and establishing a relationship curve between the additional stress of the outrigger truss and the closing time;

[0025] S43, determining the earliest closing time of the outrigger truss based on its design stress margin;

[0026] S44, reviewing the model to see whether the structural lateral stiffness and overall stability at each stage and the additional stress of the outrigger truss meet the requirements under the outrigger truss closure scheme determined in step S43.

[0027] Preferably, the S5 specifically includes:

[0028] S51, taking the vertical displacement of the core tube as the control target, establish the vertical displacement pre-deformation analysis of the core tube, simulate the whole construction process, and obtain the vertical displacement of each layer of the core tube and the initial pre-adjustment value of the core tube elevation of each layer at the end of the construction according to the design line;

[0029] S52, calculating the elevation of each layer of the core tube after pre-adjustment, correcting the elevation of the core tube, completing the construction simulation of each layer, obtaining the vertical displacement of the core tube and the outer frame of each layer, and after completing the construction simulation, obtaining the vertical displacement of the core tube of each layer at the end of the construction, and correcting the pre-adjustment value of the core tube elevation;

[0030] S53, taking the relative vertical deformation inside and outside the frame tube as the control target, establishing the pre-deformation analysis of the relative vertical deformation inside and outside the frame tube, calculating the relative deformation inside and outside the frame tube of each layer according to the pre-adjusted construction elevation of each layer of the core tube calculated in the previous step S52, and obtaining the initial pre-adjustment value of the external frame elevation of each layer;

[0031] S54, calculate the elevation of each layer of the outer frame after pre-adjustment, correct the elevation of the outer frame, complete the construction simulation of each layer, obtain the vertical displacement of the core tube and the outer frame and the relative deformation of the inner and outer tube of the frame tube. After completing the construction simulation, obtain the relative deformation of the inner and outer tube of each layer at the end of construction, correct the pre-adjustment value of the outer frame elevation, and obtain the construction elevation of each layer of the outer frame after pre-adjustment.

[0032] The present invention also provides a finite element-based structural construction process simulation analysis system, which is used to implement a finite element-based structural construction process simulation analysis method, specifically comprising:

[0033] The modeling module is used to simulate the construction site by using the method of layer-by-layer shaping of structural stiffness and layer-by-layer loading of vertical loads to model the construction of super-high-rise buildings;

[0034] Deformation analysis module, used to analyze vertical and lateral deformation of models at different construction stages;

[0035] Stress analysis module, used to perform stress analysis of vertical components and outrigger trusses on models at different construction stages;

[0036] Closure analysis module, used to perform outrigger truss closure analysis on models at different construction stages;

[0037] The installation pre-adjustment value sub-module is used to analyze the installation pre-adjustment values ​​of steel components in models at different construction stages.

[0038] The present invention also provides an electronic device, including a memory and a processor, wherein the processor is used to implement the steps of a finite element-based structural construction process simulation analysis method when executing a computer management program stored in the memory.

[0039] The present invention also provides a computer-readable storage medium on which a computer management program is stored. When the computer management program is executed by a processor, the steps of the structural construction process simulation analysis method based on finite elements are implemented.

[0040] Beneficial effects: The present invention provides a method and system for simulating and analyzing the structural construction process based on finite elements, wherein the method includes: simulating the construction site by using the method of forming the structural stiffness layer by layer and loading the vertical load layer by layer to model the construction of super high-rise buildings; analyzing the vertical deformation and lateral deformation of the models at different construction stages; analyzing the stress of vertical components and cantilever trusses at different construction stages; analyzing the closure of cantilever trusses at different construction stages; analyzing the pre-adjustment value of steel component installation at different construction stages. By simulating the construction site by using the method of forming the structural stiffness layer by layer and loading the vertical load layer by layer, the construction of super high-rise buildings is simulated, and after computer analysis, the vertical structure elevation is pre-adjusted according to the computer prediction value, and the on-site pre-adjustment is performed according to the computer result, and then the monitoring result is used to determine whether the pre-adjustment value needs to be corrected. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A flow chart of a structural construction process simulation analysis method based on finite element provided by the present invention;

[0042] Figure 2 A schematic diagram of the hardware structure of a possible electronic device provided by the present invention;

[0043] Figure 3 A schematic diagram of the hardware structure of a possible computer-readable storage medium provided by the present invention. DETAILED DESCRIPTION

[0044] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] Figure 1 A finite element-based structural construction process simulation analysis method provided by the present invention comprises the following steps:

[0046] S1, simulates the construction site by adopting the method of layer-by-layer shaping of structural stiffness and layer-by-layer loading of vertical loads to model the construction of super-high-rise buildings;

[0047] S2, analyze the vertical and lateral deformation of the model at different construction stages;

[0048] S3, stress analysis of vertical components and outrigger trusses of the models at different construction stages;

[0049] S4, outrigger truss closure analysis was performed on the models at different construction stages;

[0050] S5, analyze the pre-adjustment values ​​of steel component installation for models at different construction stages.

[0051] During the traditional super-high-rise construction process, it is impossible to detect the structure and adjust the construction rhythm. The present invention can establish a building structure model, simulate the structure, material, construction rate, structural height difference and other aspects, and obtain the direction of construction and adjustment at different stages, which effectively ensures the safety of the structure. Using Midas Gen finite element analysis software, the method of layer-by-layer shaping of structural stiffness and layer-by-layer loading of vertical loads is adopted to simulate the entire construction process of super-high-rise buildings, and obtain the best closing plan of the cantilever truss and the pre-adjustment value analysis results, which has an accurate guiding role in construction.

[0052] In a specific implementation scenario:

[0053] 1. Analysis scheme of vertical deformation and lateral deformation

[0054] The finite element software Midas Gen was used to establish a model of the entire structural construction process according to the construction schedule. The time-varying model of concrete compressive strength and shrinkage creep model recommended by the specifications were adopted, and the structural deadweight, construction load (floor construction live load, top formwork steel platform load), reduced wind load and seismic load were considered.

[0055] 1) According to the divided construction steps, the corresponding structure groups, load groups, and boundary groups are defined, and activated or deactivated in the specified construction steps to truly simulate the construction process; wherein the construction steps have been designed before construction.

[0056] 2) The tower is about 3 years away from completion. The vertical deformation of each floor of the tower during the construction stage, completion time and commissioning stage is calculated, and the vertical deformation of the structure under one-time loading, without considering shrinkage creep, and considering shrinkage creep is compared;

[0057] 3) Analyze the distribution of vertical deformation difference between core tube and outer frame giant columns along the floors at different stages;

[0058] 4) Based on the results of vertical deformation analysis, the reserved height of the floor elevation and the reserved length of the floor vertical component line are obtained to compensate for the compression deformation of the components, so that the elevation and floor height of each floor reach the design value at the set time and meet the requirements of building use;

[0059] 5) Calculate the inter-story displacement angle of the structure under the corresponding wind load and seismic load during the construction phase, as well as whether the horizontal displacement values ​​of the tower top and each reinforced layer meet the requirements of the specification.

[0060] 2. Stress Analysis Scheme for Vertical Members and Outrigger Trusses

[0061] 1) Establish a model of the entire structural construction process, consider the loads borne by the structure at different stages (structural deadweight, construction live load, top formwork steel platform, tower crane, etc.), and define appropriate boundary conditions (bottom layer embedding, outrigger truss articulation, etc.) to reflect the actual stress conditions of the structure;

[0062] 2) Calculate and analyze the axial compression ratio, bearing capacity, and shear force distribution of the core wall and frame columns of the tower;

[0063] 3) Each reinforcement layer is selected as the object of numerical analysis to examine the stress changes of the core tube, outer frame giant columns, waist trusses and outrigger trusses at each construction stage, and provide a basis for the construction monitoring of key components.

[0064] 3. Analysis scheme of outrigger truss closure

[0065] In any determined construction stage, the development law of the additional extreme stress of the same outrigger truss under different connection schemes remains basically unchanged and has nothing to do with its closing time; the mutual influence results between multiple outrigger trusses can be obtained by superimposing their respective influence results, and the mutual influence between each other on the additional stress during closing is very small. Therefore, the closing of the outrigger truss can be determined by the relationship curve between the additional stress of a single outrigger and the connection time.

[0066] The tower's outrigger truss reinforcement layers are located at the 31st and 32nd floors, the 47th and 48th floors, the 63rd and 64th floors, and the 79th and 80th floors, all of which are two-layer closures. In order to determine the reasonable closing scheme of the tower's outrigger trusses, the scheme shown in Table 1 below is used for analysis.

[0067] Table 1 Closing scheme

[0068]

[0069] 1) First, examine whether the lateral stiffness and overall stability of the tower when the outrigger trusses are not closed at each construction stage meet the requirements, and determine the latest closing time of the outrigger trusses;

[0070] 2) Analyze the change of additional stress of the outrigger truss under different outrigger truss closure conditions at various construction stages of the tower, and establish the relationship curve between the additional stress of the outrigger truss and the closure time;

[0071] 3) Determine the earliest closing time of the outrigger truss based on its design stress margin;

[0072] 4) Review whether the structural lateral stiffness and overall stability of the tower at each stage, as well as the additional stress of the outrigger truss, meet the requirements under the outrigger truss closure scheme determined in step 3.

[0073] 4. Analysis plan for pre-adjustment value of steel component installation

[0074] The problem of vertical deformation accumulation of super-high-rise structures is mainly manifested in the vertical displacement of the structure and the relative vertical deformation inside and outside the frame tube. Therefore, its pre-deformation is divided into two parts: vertical displacement pre-deformation and relative vertical deformation pre-deformation inside and outside the frame tube.

[0075] 1) Taking the vertical displacement of the core tube as the control target, the vertical displacement pre-deformation analysis of the core tube is established, and the whole construction process is simulated to obtain the vertical displacement of each layer of the core tube and the initial pre-adjustment value of the core tube elevation of each layer at the end of the construction according to the design line;

[0076] 2) Calculate the elevation of each layer of core tube after pre-adjustment, correct the elevation of the core tube, complete the construction simulation of each layer, obtain the vertical displacement of the core tube and the outer frame of each layer, and after completing the construction simulation, obtain the vertical displacement of the core tube of each layer at the end of the construction, and correct the pre-adjustment value of the core tube elevation;

[0077] 3) Taking the relative vertical deformation of the frame tube inside and outside as the control target, establish the pre-deformation analysis of the relative vertical deformation of the frame tube inside and outside. According to the pre-adjusted construction elevation of each layer of the core tube calculated in the previous step, calculate the relative deformation of the frame tube inside and outside of each layer, and obtain the initial pre-adjustment value of the external frame elevation of each layer;

[0078] 4) Calculate the elevation of each layer of the outer frame after pre-adjustment, correct the elevation of the outer frame, complete the construction simulation of each layer, obtain the vertical displacement of the core tube and the outer frame and the relative deformation of the inner and outer tube of the frame tube. After completing the construction simulation, obtain the relative deformation of the inner and outer tube of each layer at the end of construction, correct the pre-adjustment value of the outer frame elevation, and obtain the construction elevation of each layer of the outer frame after pre-adjustment.

[0079] The following are some examples:

[0080] Structural analysis and simulation were carried out for the 458-meter main tower of the Chongqing Super High-rise Phase II and III project. The building structure models of different stages were established through the progress plan, and the working conditions under different circumstances were loaded respectively. The simulations of different construction stages are as follows:

[0081] CS1: core tube construction to the 1st floor (duration: 10 days); CS2: core tube construction to the 8th floor, outer frame construction to the 4th floor, core tube floor slab pouring to the 5th floor, outer frame floor slab pouring to the 4th floor (duration: 60 days); CS3: suspension period (duration: 365 days); CS4: suspension period; CS7: core tube construction to the 15th floor (duration: 93 days); CS8: core tube construction to the 16th floor; CS10: core tube construction to the 25th floor, outer frame floor slab pouring to the 5th floor; CS11: core CS14: The core tube was constructed to the 40th floor, the outer frame was constructed to the 16th floor, the core tube floor was cast to the 8th floor, and the outer frame floor was cast to the 14th floor; CS15: The core tube was constructed to the 45th floor, the outer frame was constructed to the 21st floor, and the core tube floor was cast to the 9th floor; CS17: The core tube was constructed to the 50th floor, the core tube floor was constructed to the 12th floor, and the outer frame floor was cast to the 22nd floor; CS18: The core tube was constructed to the 53rd floor, the core tube floor was cast to the 15th floor, and the outer frame floor was cast to the 22nd floor.

[0082] 1. Analysis scheme of vertical deformation and lateral deformation

[0083] The deformation characteristics of the tower at different heights under elastic compression are taken, and the average displacement of the corner points of the tower core tube and the displacement of the outer frame column are selected to analyze its deformation characteristics. The strain is obtained through the models at different stages. According to the simulation results, it can be seen that shrinkage creep deformation has a certain influence on the displacement of the tower, and effective measures should be taken during the construction process to reduce the influence of shrinkage creep effect; the horizontal displacement of the tower is not large.

[0084] 2. Stress analysis scheme for vertical members and outrigger trusses

[0085] According to the simulation results, it can be seen that the component stresses of the core tube and outer frame are within the strength design value of the material.

[0086] 3. Analysis scheme of outrigger truss closure

[0087] According to the construction sequence of each construction phase of the tower, five typical outrigger truss closure plans were proposed, namely SC1, SC2, SC3, SC4 and SC5.

[0088] According to the construction sequence of the tower, five typical outrigger truss closure schemes were proposed for analysis. The analysis schemes are shown in Table 2 below.

[0089] Table 2 Outrigger truss closure plan

[0090]

[0091] Through analysis and comparison, it can be seen that the extreme stress of each outrigger truss in the five typical outrigger truss closure schemes is within the material strength limit.

[0092] 4. Analysis plan for pre-adjustment value of steel component installation

[0093] According to the deformation characteristics of the tower core tube under the load during the construction stage, the corner points of the tower core tube are selected to analyze its deformation. From the calculation and analysis, it can be seen that the vertical deformation of the main building is large. During the structural construction, the structural elevation of the corresponding floor needs to be adjusted according to the deformation pre-control plan to meet the deformation pre-control requirements of the main building core tube and the outer frame. According to the construction simulation analysis results, the tower deformation pre-adjustment plan is as follows:

[0094] The first pre-adjustment: The adjusted floor is the fourth refuge floor (L63 floor). The first pre-adjustment of the core tube is shown in Table 3 below.

[0095] Table 3 The first pre-adjustment of the core tube

[0096]

[0097] Second pre-adjustment: The adjusted floor is the fifth refuge floor. See Table 4 below.

[0098] Table 4 Second pre-adjustment of the core tube

[0099]

[0100] The embodiment of the present invention further provides a finite element-based structural construction process simulation analysis system, which is used to implement a finite element-based structural construction process simulation analysis method, specifically comprising:

[0101] The modeling module is used to simulate the construction site by using the method of layer-by-layer shaping of structural stiffness and layer-by-layer loading of vertical loads to model the construction of super-high-rise buildings;

[0102] Deformation analysis module, used to analyze vertical and lateral deformation of models at different construction stages;

[0103] Stress analysis module, used to perform stress analysis of vertical components and outrigger trusses on models at different construction stages;

[0104] Closure analysis module, used to perform outrigger truss closure analysis on models at different construction stages;

[0105] The installation pre-adjustment value sub-module is used to analyze the installation pre-adjustment values ​​of steel components in models at different construction stages.

[0106] See also Figure 2Schematic diagram of an electronic device provided by an embodiment of the present invention. Figure 2 As shown, an embodiment of the present invention provides an electronic device, including a memory 1310, a processor 1320, and a computer program 1311 stored in the memory 1310 and executable on the processor 1320. When the processor 1320 executes the computer program 1311, the following steps are implemented: S1, a method of simulating a construction site to form a structure stiffness layer by layer and load a vertical load layer by layer to model the construction of a super high-rise building;

[0107] S2, analyze the vertical and lateral deformation of the model at different construction stages;

[0108] S3, stress analysis of vertical components and outrigger trusses of the models at different construction stages;

[0109] S4, outrigger truss closure analysis was performed on the models at different construction stages;

[0110] S5, analyze the pre-adjustment values ​​of steel component installation for models at different construction stages.

[0111] See also Figure 3 Schematic diagram of an embodiment of a computer-readable storage medium provided by the present invention. Figure 3 As shown, this embodiment provides a computer-readable storage medium 1400, on which a computer program 1411 is stored. When the computer program 1411 is executed by a processor, the following steps are implemented: S1, a method of simulating a construction site to adopt a layer-by-layer shaping of structural stiffness and a layer-by-layer loading of vertical loads to model the construction of a super high-rise building;

[0112] S2, analyze the vertical and lateral deformation of the model at different construction stages;

[0113] S3, stress analysis of vertical components and outrigger trusses of the models at different construction stages;

[0114] S4, outrigger truss closure analysis was performed on the models at different construction stages;

[0115] S5, analyze the pre-adjustment values ​​of steel component installation for models at different construction stages.

[0116] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0117] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0118] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0119] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0120] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0121] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0122] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A structural construction process simulation analysis method based on finite element, characterized in that: The following steps are involved: S1, simulates the construction site by adopting the method of layer-by-layer shaping of structural stiffness and layer-by-layer loading of vertical loads to model the construction of super-high-rise buildings; S2, analyze the vertical and lateral deformation of the model at different construction stages; S3, stress analysis of vertical components and outrigger trusses of the models at different construction stages; S4, outrigger truss closure analysis was performed on the models at different construction stages; S5, analyze the pre-adjustment value of steel component installation for models at different construction stages; The S4 specifically includes: S41, first examine whether the lateral stiffness and overall stability of the model at each construction stage when the outrigger truss is not closed meet the requirements, and determine the latest closing time of the outrigger truss; S42, analyzing the change of the additional stress of the outrigger truss under different outrigger truss closing conditions at each construction stage of the model, and establishing a relationship curve between the additional stress of the outrigger truss and the closing time; S43, determining the earliest closing time of the outrigger truss based on its design stress margin; S44, reviewing the model to see whether the lateral stiffness and overall stability of the structure at each stage and the additional stress of the outrigger truss meet the requirements under the outrigger truss closing scheme determined in step S43; The S5 specifically includes: S51, taking the vertical displacement of the core tube as the control target, establish the vertical displacement pre-deformation analysis of the core tube, simulate the whole construction process, and obtain the vertical displacement of each layer of the core tube and the initial pre-adjustment value of the core tube elevation of each layer at the end of the construction according to the design line; S52, calculating the elevation of each layer of the core tube after pre-adjustment, correcting the elevation of the core tube, completing the construction simulation of each layer, obtaining the vertical displacement of the core tube and the outer frame of each layer, and after completing the construction simulation, obtaining the vertical displacement of the core tube of each layer at the end of the construction, and correcting the pre-adjustment value of the core tube elevation; S53, taking the relative vertical deformation inside and outside the frame tube as the control target, establishing the pre-deformation analysis of the relative vertical deformation inside and outside the frame tube, calculating the relative deformation inside and outside the frame tube of each layer according to the pre-adjusted construction elevation of each layer of the core tube calculated in the previous step S52, and obtaining the initial pre-adjustment value of the external frame elevation of each layer; S54, calculate the elevation of each layer of the outer frame after pre-adjustment, correct the elevation of the outer frame, complete the construction simulation of each layer, obtain the vertical displacement of the core tube and the outer frame and the relative deformation of the inner and outer tube of the frame tube. After completing the construction simulation, obtain the relative deformation of the inner and outer tube of each layer at the end of construction, correct the pre-adjustment value of the outer frame elevation, and obtain the construction elevation of each layer of the outer frame after pre-adjustment.

2. The structural construction process simulation analysis method based on finite element according to claim 1 is characterized in that: The S1 specifically includes: using the finite element software Midas Gen to establish a model of the entire structural construction process according to the construction schedule, using a time-varying model of concrete compressive strength and a shrinkage creep model, and considering the structural deadweight, construction load, reduced wind load and seismic load.

3. The structural construction process simulation analysis method based on finite element according to claim 1 is characterized in that: The S2 specifically includes: S21, according to the divided construction steps, define the corresponding structure group, load group, and boundary group of each construction step, activate or deactivate the construction step, and simulate the construction process; S22, calculate the vertical deformation of each floor during the construction stage, completion time and commissioning stage, and compare the vertical deformation of the structure under one-time loading, without considering shrinkage and creep, and considering shrinkage and creep; S23, analyze the distribution of vertical deformation difference between core tube and outer frame giant columns along the floors at different construction stages; S24, based on the vertical deformation analysis results, obtain the reserved height of the floor elevation and the reserved length of the floor vertical component line to compensate for the compression deformation of the component, so that the elevation and floor height of each floor reach the design value at the set time and meet the building use requirements; S25, calculate the inter-story displacement angle of the structure under the corresponding wind load and seismic load during the construction phase, as well as whether the horizontal displacement values ​​of the tower top and each reinforced layer meet the requirements of the specification.

4. The structural construction process simulation analysis method based on finite element according to claim 1 is characterized in that: The S3 specifically includes: S31, when establishing the whole process model of structural construction, the loads borne by the structure at different stages are considered, and boundary conditions are defined to reflect the actual stress conditions of the structure; S32, calculate and analyze the axial compression ratio, bearing capacity, and shear force distribution of the core tube wall and frame columns of the model; S33, each reinforcement layer is selected as the object of numerical analysis, and the stress changes of the core tube, outer frame giant column, waist truss and outrigger truss at each construction stage are examined to provide a basis for construction monitoring.

5. A structural construction process simulation analysis system based on finite element, characterized in that: The system is used to implement the finite element-based structural construction process simulation analysis method as described in any one of claims 1 to 4, specifically comprising: The modeling module is used to simulate the construction site by using the method of layer-by-layer shaping of structural stiffness and layer-by-layer loading of vertical loads to model the construction of super-high-rise buildings; Deformation analysis module, used to analyze vertical and lateral deformation of models at different construction stages; Stress analysis module, used to perform stress analysis of vertical components and outrigger trusses on models at different construction stages; The closing analysis module is used to perform a closing analysis of the cantilever truss for the model at different construction stages; specifically, it includes: S41, firstly, examining whether the lateral stiffness and overall stability of the model when the cantilever truss is not closed at each construction stage meet the requirements, and determining the latest closing time of the cantilever truss; S42, analyzing the change of the additional stress of the cantilever truss under different cantilever truss closing conditions at each construction stage of the model, and establishing a relationship curve between the additional stress of the cantilever truss and the closing time; S43, determining the earliest closing time of the cantilever truss according to the design stress margin of the cantilever truss; S44, reviewing whether the structural lateral stiffness and overall stability of the model at each stage, as well as the additional stress of the cantilever truss meet the requirements under the cantilever truss closing scheme determined in step S43; The installation pre-adjustment value submodule is used to analyze the installation pre-adjustment value of steel components for models at different construction stages; specifically, it includes: S51, establishing a pre-deformation analysis of the vertical displacement of the core tube with the vertical displacement of the structural core tube as the control target, simulating the entire construction process, and obtaining the vertical displacement of each layer of the core tube at the end of the construction according to the design line and the initial pre-adjustment value of the core tube elevation of each layer; S52, calculating the elevation of each layer of the core tube after pre-adjustment, correcting the core tube elevation, completing the construction simulation of each layer, and obtaining the vertical displacement of the core tube and the outer frame of each layer. After completing the construction simulation, the vertical displacement of the core tube of each layer at the end of the construction is obtained, and the pre-adjustment value of the core tube elevation is corrected. value; S53, taking the relative vertical deformation of the frame tube inside and outside as the control target, establish the pre-deformation analysis of the relative vertical deformation of the frame tube inside and outside, calculate the relative deformation of the frame tube inside and outside of each layer according to the pre-adjusted construction elevation of each layer of the core tube calculated in the previous step S52, and obtain the initial pre-adjusted value of the external frame elevation of each layer; S54, calculate the pre-adjusted elevation of the external frame of each layer, correct the elevation of the external frame, complete the construction simulation of each layer, obtain the vertical displacement of the core tube and the external frame and the relative deformation of the frame tube inside and outside, after completing the construction simulation, obtain the relative deformation of the frame tube inside and outside of each layer at the end of construction, correct the pre-adjusted value of the external frame elevation, and obtain the pre-adjusted construction elevation of each layer of the external frame.

6. An electronic device, characterized in that: It includes a memory and a processor, and the processor is used to implement the steps of the finite element-based structural construction process simulation analysis method as described in any one of claims 1 to 4 when executing the computer management program stored in the memory.

7. A computer-readable storage medium, characterized in that: A computer management program is stored thereon, and when the computer management program is executed by the processor, the steps of the finite element-based structural construction process simulation analysis method as described in any one of claims 1 to 4 are implemented.

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