CN-122021130-A - Dry-type connection disassembly and assembly simulation method and system considering new and old coordination relationship

CN122021130ACN 122021130 ACN122021130 ACN 122021130ACN-122021130-A

Abstract

The invention provides a dry type connection disassembly and assembly simulation method and system considering new and old coordination relations, and belongs to the technical field of finite element simulation of structural engineering. Firstly, a finite element model of a main structure and a replaceable energy consumption assembly is built, then, a double energy consumption assembly model is obtained through copying model parameters and setting offset displacement, secondly, the double energy consumption assembly is activated in stages through a finite element unit shielding and activating function, continuous disassembly and assembly working conditions are simulated, meanwhile, in the analysis process, the problem that calculation analysis cannot be converged due to instantaneous unbalance of stress of the model in the shielding and activating energy consumption assembly process is solved through setting power working conditions, the simulation process is closer to a real scene replaced in an actual engineering, the conversion from static analysis to dynamic analysis in the disassembly and assembly process is realized, and finally, mechanical data before and after final disassembly and assembly working conditions are obtained through continuous working condition analysis, and a disassembly and assembly process simulation report is generated.

Inventors

ZHAO HE
TIAN YUAN
HU QIANHAN
Guo Jiangran

Assignees

北京科技大学

Dates

Publication Date: 20260512
Application Date: 20260104

Claims (8)

1. A dry connection disassembly and assembly simulation method considering new and old coordination relations is characterized by comprising the following steps: S1, modeling according to a main body structure and a replaceable energy consumption component through finite element software to obtain a main body structure finite element model and a first replaceable energy consumption component finite element model, wherein the first replaceable energy consumption component finite element model comprises a first fastener model and a first connecting plate model; S2, according to the first energy consumption component finite element model, obtaining a second energy consumption component finite element model through model copying and deflection of the first connecting plate model, wherein the second energy consumption component finite element model comprises a second fastener model and a second connecting plate model; S3, according to the first energy consumption component finite element model, the second energy consumption component finite element model and the main structure finite element model, a mechanical data set before the energy consumption component is replaced and a mechanical data set after the energy consumption component is replaced are obtained through finite element analysis on the disassembly and assembly process; S4, obtaining a simulation report through comparison analysis according to the mechanical data set before the energy consumption assembly is replaced and the mechanical data set after the energy consumption assembly is replaced.
2. The method for simulating dry connection and disassembly by considering the coordination relationship between old and new as well as according to claim 1, wherein in the step S1, the main structure finite element model and the first replaceable energy consumption assembly finite element model are obtained by finite element software modeling according to the main structure and the replaceable energy consumption assembly, and the method comprises the following steps: S11, according to the main body structure and the replaceable energy consumption assembly, a first-stage finite element model is obtained through three-dimensional modeling of finite element software; s12, obtaining a second-stage finite element model by configuring a material data model according to the first-stage finite element model; s13, according to the second-stage finite element model, a third-stage finite element model is obtained by defining boundary conditions; s14, according to the third-stage finite element model, a main body structure finite element model and a first replaceable energy consumption component finite element model are obtained through a defined contact mode.
3. The method for simulating dry connection disassembly and assembly taking new and old coordination relationships into consideration according to claim 1, wherein in S2, according to the first energy consumption component finite element model, a second energy consumption component finite element model is obtained by copying an offset from the first connection plate model through a model, and the method comprises the following steps: S21, according to the first energy consumption component finite element model, obtaining a copied energy consumption component finite element model through model copying; s22, according to the copying energy consumption assembly finite element model, an initial offset is set relative to the first connecting plate model, and a second replaceable energy consumption assembly finite element model is obtained.
4. The method for simulating dry connection and disassembly according to claim 1, wherein in S3, the mechanical dataset before replacing the energy consumption component and the mechanical dataset after replacing the energy consumption component are obtained by performing finite element analysis on the disassembly and assembly process according to the first energy consumption component finite element model, the second energy consumption component finite element model and the main structure finite element model, and the method comprises the following steps: S31, according to the first energy consumption component finite element model, the second energy consumption component finite element model and the main structure finite element model, a mechanical data set before replacing the energy consumption component and a first-stage continuous working condition finite element calculation model are obtained through loading working condition analysis of the original energy consumption component; S32, according to the first-stage continuous working condition finite element calculation model, obtaining a second-stage continuous working condition finite element calculation model through replacement working condition analysis; s33, according to the second-stage continuous working condition finite element calculation model, the mechanical data set after the energy consumption assembly is replaced is obtained through loading working condition analysis of the new energy consumption assembly.
5. The method for simulating dry connection and disassembly according to claim 4, wherein in S31, according to the first energy consumption component finite element model, the second energy consumption component finite element model and the main structure finite element model, the mechanical dataset and the first-stage continuous working condition finite element calculation model before the energy consumption component replacement are obtained through the loading working condition analysis of the original energy consumption component, and the method comprises the following steps: S311, according to the first energy consumption component finite element model, the second energy consumption component finite element model and the main structure finite element model, a finite element model before the energy consumption component is replaced in the first stage is obtained by shielding the second energy consumption component finite element model; S312, according to the finite element model before the energy consumption assembly is replaced in the first stage, loading the basic load and the constraint in the first stage to obtain the finite element model before the energy consumption assembly is replaced in the second stage; S313, according to the finite element model before the energy consumption assembly is replaced in the second stage, a mechanical data set before the energy consumption assembly is replaced and a first-stage continuous working condition finite element calculation model are obtained through loading the first-stage hysteresis load.
6. The method for simulating dry connection and disassembly by considering the coordination relationship between old and new according to claim 4, wherein the step S32 is performed according to the first-stage continuous condition finite element calculation model, and the second-stage continuous condition finite element calculation model is obtained through replacement condition analysis, and the method comprises the following steps: S321, shielding the first energy consumption component finite element model according to the first-stage continuous working condition finite element calculation model, and obtaining a first-stage dismantling energy consumption component finite element model through power working condition analysis; S322, removing the finite element model of the energy consumption assembly according to the first stage, and obtaining the fastening hole deformation of the finite element model of the main body structure through data analysis; s323, applying displacement load to the main body structure finite element model according to the deformation of the fastening hole of the main body structure finite element model to obtain a main body structure finite element model after the deformation is recovered; s324, activating the second connecting plate model according to the offset of the first connecting plate model, and obtaining a moved second connecting plate model by setting displacement parameters; S325, activating the second fastener model according to the main structure finite element model after the recovery deformation and the second connecting plate model after the movement, so that the finite element model of the new energy consumption component installed in the second stage is obtained through the pre-tightening force loading working condition analysis; S326, installing a new energy consumption component finite element model according to the second stage, canceling the displacement load, and analyzing the power working condition to obtain a second-stage continuous working condition finite element calculation model.
7. The method for simulating dry connection and disassembly by considering the coordination relationship between old and new as claimed in claim 4, wherein the step S33 is performed according to the second-stage continuous condition finite element calculation model, by analyzing loading conditions of the new energy consumption assembly, to obtain the mechanical dataset after replacing the energy consumption assembly, and includes: s331, according to the second-stage continuous working condition finite element calculation model, loading a second-stage basic load and constraint to obtain a first-stage new energy consumption component loading finite element model; s332, loading a finite element model according to the new energy consumption component of the first stage, and loading a hysteresis load of the second stage to obtain a mechanical data set after replacing the energy consumption component.
8. A dry connection disassembly and assembly simulation system taking into account new and old coordination relationships, for implementing a dry connection disassembly and assembly simulation method taking into account new and old coordination relationships according to any one of claims 1 to 7, characterized in that the system comprises: the finite element model acquisition module is used for modeling through finite element software according to the main structure and the replaceable energy consumption assembly to obtain a main structure finite element model and a first replaceable energy consumption assembly finite element model, wherein the first replaceable energy consumption assembly finite element model comprises a first fastener model and a first connecting plate model; The double-energy-consumption-component finite element model acquisition module is used for obtaining a second energy-consumption-component finite element model by copying the first energy-consumption-component finite element model and shifting the first connecting plate model according to the first energy-consumption-component finite element model, and the second energy-consumption-component finite element model comprises a second fastener model and a second connecting plate model; The continuous working condition simulation module is used for obtaining a mechanical data set before the energy consumption assembly is replaced and a mechanical data set after the energy consumption assembly is replaced by carrying out finite element analysis on the disassembly and assembly process according to the first energy consumption assembly finite element model, the second energy consumption assembly finite element model and the main structure finite element model; And the simulation report acquisition module is used for acquiring a simulation report through comparison analysis according to the mechanical data set before the energy consumption assembly is replaced and the mechanical data set after the energy consumption assembly is replaced.

Description

Dry-type connection disassembly and assembly simulation method and system considering new and old coordination relationship Technical Field The invention relates to the technical field of finite element simulation of structural engineering, in particular to a dry type connection disassembly and assembly simulation method and system considering new and old coordination relations. Background In recent years, dry-type connection structures represented by steel structures are applied to public buildings, industrial buildings and high-rise houses on a large scale, and structural engineering earthquake-resistant design and performance evaluation are important attention areas in the academia and engineering community, wherein structures containing replaceable energy-consuming components (such as core components of web connection plates, flange connection plates, high-strength fasteners, dampers, energy-consuming supports and the like) have the advantages of controllable damage and convenient replacement, and are research hotspots in recent years. The mechanical properties of the structure are verified through a hysteresis loading test, and the energy consumption component is usually required to be replaced by a new energy consumption component after loading so as to simulate the maintenance scene after actual earthquake, so that the replacement effect of the energy consumption component after damage is usually required to be simulated through finite element software so as to continuously evaluate the recovery performance and the bearing capacity of the whole structure after replacement, which is also an important supplement or replacement method of the test. The prior finite element simulation for the replacement process of the replaceable energy consumption component mainly comprises a secondary modeling scheme of a sound structure, which is mainly characterized in that when the replacement of the energy consumption component is simulated, the existing damage of a main body structure (such as a beam, a column and a floor slab) after the loading of a first stage is not considered, a set of complete structural model containing a new energy consumption component is directly newly built, the loading of a second stage is carried out, the core thought is to neglect the influence of the existing damage of the main body structure on the performance of the replaced structure, and the method is suitable for a preliminary design stage with lower requirement on simulation precision, a vibration loss structure repair simulation scheme is adopted, and a scholars propose a finite element method based on 'component replacement', mainly aiming at the reinforcement and repair simulation of the vibration loss structure, the method is mainly used for eliminating vibration loss concrete and reinforcing steel bars through a dead unit method of finite element software, replacing the vibration loss concrete and activating a fiber reinforced polymer reinforcement unit, realizing the repair simulation of the vibration loss component, and being suitable for a wet reinforcement or main body member replacement scene, but lacking the simulation of the detachable structure in dry connection, and also not considering the fact that the old deformation between new units cannot be coordinated, and the problem of the prior art is solved, and the problem of the prior art that the replacement of the new and the old connection is not balanced is solved. Disclosure of Invention In order to solve the problems in the prior art, the invention provides a dry connection disassembly and assembly simulation method and system considering new and old coordination relations. The method comprises the steps of firstly constructing a finite element model of a main body structure and a replaceable energy consumption assembly, then obtaining a double energy consumption assembly model through copying model parameters and setting offset displacement, secondly activating the double energy consumption assembly in stages through a finite element unit shielding and activating function, simulating continuous disassembly and assembly working conditions, meanwhile, in an analysis process, solving the problem that calculation analysis cannot be converged due to instantaneous stress unbalance of the model in the process of shielding and activating the energy consumption assembly, enabling the simulation process to be closer to a real scene replaced in an actual engineering, realizing the conversion of a disassembly and assembly process from static analysis to dynamic analysis, and finally obtaining mechanical data before and after final disassembly and assembly working conditions and generating a disassembly and assembly process simulation report through continuous working condition analysis. In order to achieve the above purpose, the technical scheme is as follows: on one hand, the invention provides a dry connection disassembly and assembly simulation method considering the c