CN107609315A - Prefabricated assembled concrete shear wall overall structure finite element modeling method - Google Patents
Prefabricated assembled concrete shear wall overall structure finite element modeling method Download PDFInfo
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Abstract
The invention discloses a kind of prefabricated assembled concrete shear wall overall structure finite element modeling method, it is mainly included the following steps that：The first step, establish precast wall body modular level and be connected detailed finite element model with vertical, extract contact face mechanical performance；Second step, feature wall body construction is extracted, establishes feature wall body construction FEM model storehouse；3rd step, assemble prefabricated assembled shear wall overall structure FEM model.This invention simplifies Whole structure model, reduces element number, optimizes analysis path, improves computational efficiency.The problems such as finite element Whole structure model of prefabricated assembled concrete shear wall structure connecting structure feature and mechanical characteristic can be embodied by establishing, and the FEM model for solving existing method foundation can not reflect low connecting structure characteristic between precast wall body, analysis efficiency, FEM model and practical structures goodness of fit difference truly and comprehensively.
Description
Technical field
The present invention relates to a kind of prefabricated assembled concrete shear wall overall structure finite element modeling method.
Background technology
Prefabricated assembled concrete structure is prefabricated in the factory by main member, and carries out the knot of assembly at the construction field (site)
Structure is the primary structure form of modern architecture industrialization.The structure has that short time limit, labor intensity are low, construction quality is high, green
The advantages that environmentally friendly, meet China's housing industrialization, the national policy and demand for development of building energy conservation emission reduction, and shear wall structure
It is the structure type commonly used in skyscraper.In recent years, China is further heavy to prefabricated assembled concrete structural research and application
Depending on.Therefore, the integrally-built research of prefabricated assembled concrete shear wall turns into the hot issue in Structural Engineering with application.
Domestic and foreign scholars are more to expansion such as the wall limbs, coupling beam, coupled shear wall of prefabricated assembled concrete shear wall structure
Orientation research, for all kinds of assembled walls research mainly based on experimental study, by loading equipemtn and test site etc.
It is mostly reduced scale component to limit research object, and the experimental study of full-scale precast reinforced concrete shear wall structure is more difficult.For
The stress performance of this class formation is furtherd investigate, multi parameter analysis is carried out, solves that experimental study cost is high and experimental condition is limited
The problems such as, it is the best approach generally acknowledged at present to carry out analysis using finite element method.
At present, cast-in-situ steel reinforced concrete is sheared wall member and overall structure carry out non linear finite element analysis research compared with
It is more but still rare for the integrally-built non linear finite element analysis of prefabricated assembling type reinforced concrete shear wall, its reason
Essentially consist in such structural modeling complexity, contact face mechanical performance is not still fully aware of and computational efficiency is low.It is it is therefore proposed that prefabricated
Assembly concrete shear wall overall structure FEM model modeling method is most important.
The content of the invention
, can it is an object of the invention to provide a kind of prefabricated assembled concrete shear wall overall structure finite element modeling method
Establish the integrally-built mechanical characteristic model of a prefabricated assembled concrete shear wall, there is provided simple to operate and with high-precision
The modeling of degree, realize to the integrally-built finite element analysis of prefabricated assembled concrete shear wall.
In order to solve the problems, such as that prior art is present, the technical solution adopted by the present invention is：
Prefabricated assembled concrete shear wall overall structure finite element modeling method, is mainly included the following steps that：
The first step, establish precast wall body modular level and be connected detailed finite element model with vertical, extract contact face mechanical performance；
Second step, feature wall body construction is extracted, establishes feature wall body construction FEM model storehouse；
3rd step, assemble prefabricated assembled shear wall overall structure FEM model.
The described first step comprises the following steps：
It is overall to overall composition fabricated shear wall according to prefabricated assembled concrete shear wall overall structure three-dimensional CAD model
Respectively the horizontal and vertical connecting elements of standardization wall carries out detailed finite element modeling in structure, using 3D solid unit
C3D8R simulation concretes, three-dimensional truss unit T3D2 simulation reinforcing bars, reinforcing bar unit, which is embedded in concrete, makes its collaborative work,
The stress performance of precast wall body seam crossing is simulated by setting osculating element, and each standardization wall level is obtained by analysis
With the vertical stress performance for being connected seam.
Described second step comprises the following steps：
Wall in overall structure is actively simplified into quadrangularly characteristic members, feature wall body construction is established using S4R shell units
Finite element simplified model, arrangement of reinforcement, while interactive input geometric parameter are carried out to wall element by REBAR LAYER orders
With unit material parameter；The geometric parameter of feature Wall model refers to the sectional dimension of simplified model wall and crucial point coordinates,
Unit material parameter is to show concrete that walls concrete unit and reinforcing bar unit assigned and reinforcing bar rate associated injury this structure
Relation；
The 3rd described step comprises the following steps：
The feature wall body construction established is carried out by assembly by connection unit, by the seam crossing stress performance of gained in the first step
Each connection unit is assigned, it is limited to form the prefabricated assembled shear wall overall structure to be matched with overall structure three-dimensional CAD model
Meta-model, and the model conversion is deposited into ABAQUS relevant work catalogues, in ABAQUS CAE runnable interfaces into INP files
Lower calling this document can directly generate prefabricated assembled shear wall overall structure FEM model.
Advantage for present invention is with effect：
Prefabricated assembled concrete shear wall overall structure finite element modeling method of the present invention is due to comprising the following steps：With entity
Element entity establishes component detailed finite element model, by explicitly or implicitly algorithm, solve prefabricated assembled wall component with
Vertical, horizontal contact face the stress performance of site concrete；It is main that wall, coupling beam etc. in overall structure are simulated using slicing competition
Want primary structure member, and by concrete and reinforcing bar rate associated injury constitutive model assign respectively concrete unit in precast wall body and
Reinforcing bar unit, analysis obtain the mechanics and deformation performance of contact surface between precast wall body；Prefabricated dress is simulated using connection unit
Horizontal, vertical contact surface with formula wall body construction and cast-in-situ wall component, analysis gained contact surface attribute is assigned and connected accordingly
Order member；Realized with finite element software ABAQUS.This method using connection unit simulation prefabricated components, prefabricated components with
Seam between site concrete can effectively reflect the mechanics and deformation performance of precast wall body joint face, simplify unit construction mo(u)ld
Type, element number is reduced, optimize analysis path, improve computational efficiency.Prefabricated assembled concrete shearing can be embodied by establishing
The finite element Whole structure model of wall construction connecting structure feature and mechanical characteristic, solves the finite element mould of existing method foundation
Type can not reflect low connecting structure characteristic between precast wall body, analysis efficiency, FEM model and practical structures truly and comprehensively
The problems such as goodness of fit difference.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the prefabricated assembled concrete shear wall overall structure finite element modeling method flow chart of the present invention；
Fig. 2 is the prefabricated assembled concrete shear wall overall structure solid element detailed finite element model signal of the present invention
Figure；
Fig. 3 is the solid element detailed finite element model schematic that the present invention obtains perps shear behavior；
Fig. 4 is the solid element detailed finite element model schematic that the present invention obtains perps horizontal direction force performance；
Fig. 5 is the solid element detailed finite element model schematic that the present invention obtains horizontal joint shear behavior；
Fig. 6 is the solid element detailed finite element model schematic that the present invention obtains horizontal joint vertical applied force performance；
Fig. 7 is the precast wall body component assembly schematic diagram after simplification of the present invention.
Wherein：1 is precast wall body, and 2 be cast-in-situ wall at perps, and 3 be the connection unit of perps, and 4 be the connection of horizontal joint
Unit.
Embodiment
With reference to specific embodiment, the present invention will be described in further detail, but protection scope of the present invention is not had
The embodiment of body is limited, and is defined by claims.In addition, with without prejudice on the premise of technical solution of the present invention, to this hair
Any modifications or changes that bright made those of ordinary skill in the art easily realize fall within the claim model of the present invention
Within enclosing.
As shown in Figure 1, 2, a kind of prefabricated assembled concrete shear wall overall structure finite element modeling method, it include with
Lower step：
The first step, establish the modular level of precast wall body 1 and be connected detailed finite element model with vertical, extract contact face mechanical
Can, as shown in Fig. 3,4,5,6.According to prefabricated assembled concrete shear wall overall structure three-dimensional CAD model, to overall composition dress
With respectively standardization wall level and vertical connecting elements progress detailed finite element modeling in formula shear wall overall structure, using three
Solid element C3D8R simulation concretes are tieed up, three-dimensional truss unit T3D2 simulation reinforcing bars, reinforcing bar unit, which is embedded in concrete, makes it
Cooperate, simulate the stress performance of precast wall body seam crossing by setting osculating element, pass through calculating explicitly or implicitly
Method, the stress performance and destructive process of test specimen are analyzed by the way of dull load, obtain each standardization wall water
The flat stress performance with vertical connector seam.
Second step, feature wall body construction is extracted, establishes feature wall body construction FEM model storehouse.By the wall in overall structure
Body actively simplifies quadrangularly characteristic members, and the finite element simplified model of feature wall body construction is established using S4R shell units, is passed through
REBAR LAYER orders carry out arrangement of reinforcement, while interactive input geometric parameter and unit material parameter to wall element；Feature wall
The geometric parameter of body Model refers to the sectional dimension of simplified model wall and crucial point coordinates, and unit material parameter is to show wall
The concrete and reinforcing bar rate associated injury constitutive relation that concrete unit and reinforcing bar unit are assigned.
3rd step, prefabricated assembled shear wall overall structure FEM model is assembled, as shown in Figure 7.Pass through the company of perps
The feature wall body construction established is carried out assembly by the connection unit 4 of order member 3 and horizontal joint, by the seam of gained in the first step
Locate stress performance and assign each connection unit, it is whole to form the prefabricated assembled shear wall to be matched with overall structure three-dimensional CAD model
Body structural finite element model, and the model conversion is deposited into ABAQUS relevant work catalogues, in ABAQUS into INP files
This document is called to directly generate prefabricated assembled shear wall overall structure FEM model under CAE runnable interfaces.
It is further described with reference to one embodiment：
In a prefabricated assembling type reinforced concrete shear wall structure, choose a piece of complete with vertical abutment joint and horizontal joint
Size prefabricated assembled concrete shear wall overall structure is as research object, as shown in Figure 7.
According to prefabricated assembled concrete shear wall overall structure three-dimensional CAD model, overall composition assembled is cut respectively
It is fine that the level of the perps of power wall overall structure Plays wall and the connecting elements of vertical applied force performance establish solid element
Change FEM model, as shown in Figure 3,4.Using 3D solid unit C3D8R simulation concretes, three-dimensional truss unit T3D2 simulations
Reinforcing bar, will reinforcing bar unit be embedded in concrete in make its collaborative work, using osculating element come simulate precast wall body seam crossing by
Power performance, by computational methods explicitly or implicitly, to the stress performance and destructive process of test specimen by the way of dull load
Analyzed, it is horizontal with the stress performance of vertical connector seam to obtain each standardization wall.
The component of cast-in-situ wall 2 at precast wall body component and perps in overall structure is actively simplified into quadrangularly feature structure
Part, as shown in Figure 7.The finite element simplified model of feature wall body construction is established using S4R shell units, is ordered by REBAR LAYER
Order carries out arrangement of reinforcement, while interactive input geometric parameter and unit material parameter to wall element；The geometry of feature Wall model
Parameter refers to the sectional dimension of simplified model wall and crucial point coordinates, unit material parameter be show walls concrete unit and
The concrete and reinforcing bar rate associated injury constitutive relation that reinforcing bar unit is assigned.
Prefabricated assembled shear wall overall structure FEM model is assembled, as shown in Figure 7.Pass through connection unit Slide-
Plane the feature wall body construction established is carried out it is assembled, when connection unit parameter model is set by Elasticity with
Plasticity is associated, and assigns the seam crossing stress performance of gained in the first step to each connection unit, formation and overall structure
The prefabricated assembled shear wall overall structure FEM model that three-dimensional CAD model matches, and the model conversion is literary into INP
Part, be deposited under ABAQUS relevant work catalogues, then ABAQUS CAE runnable interfaces call this document can directly generate it is prefabricated
Fabricated shear wall overall structure FEM model.
Boundary displacement and seismic wave are applied to simplified prefabricated assembled shear wall structure FEM model, carry out finite element
Analysis is calculated, related data is extracted, is further analyzed.Find to this method solve having for existing method foundation by analysis
Limit meta-model can not reflect low connecting structure characteristic between precast wall body, analysis efficiency, FEM model and reality truly and comprehensively
The problems such as border structure goodness of fit difference.
Embodiment of the present invention does not form the limitation to the application scope, every in present inventive concept
Within spirit and principle, all any modification, equivalent and improvement that one of skill in the art can make etc. should be included in
Within protection scope of the present invention.
Claims (6)
1. prefabricated assembled concrete shear wall overall structure finite element modeling method, it is characterised in that mainly including following step
Suddenly：
The first step, establish precast wall body modular level and be connected detailed finite element model with vertical, extract contact face mechanical performance；
Second step, feature wall body construction is extracted, establishes feature wall body construction FEM model storehouse；
3rd step, assemble prefabricated assembled shear wall overall structure FEM model.
2. prefabricated assembled concrete shear wall overall structure finite element modeling method according to claim 1, its feature
It is that the described first step comprises the following steps：
It is overall to overall composition fabricated shear wall according to prefabricated assembled concrete shear wall overall structure three-dimensional CAD model
Respectively the horizontal and vertical connecting elements of standardization wall carries out detailed finite element modeling in structure.
3. prefabricated assembled concrete shear wall overall structure finite element modeling method according to claim 1, its feature
It is that the described first step comprises the following steps：
Using 3D solid unit C3D8R simulation concretes, three-dimensional truss unit T3D2 simulation reinforcing bars, reinforcing bar unit is embedded in mixed
Make its collaborative work in solidifying soil.
4. prefabricated assembled concrete shear wall overall structure finite element modeling method according to claim 1, its feature
It is that the described first step comprises the following steps：
The stress performance of precast wall body seam crossing is simulated by setting osculating element, and each standardization wall is obtained by analysis
The horizontal and stress performance of vertical connector seam.
5. prefabricated assembled concrete shear wall overall structure finite element modeling method according to claim 1, its feature
It is that described second step comprises the following steps：
Wall in overall structure is actively simplified into quadrangularly characteristic members, feature wall body construction is established using S4R shell units
Finite element simplified model, arrangement of reinforcement, while interactive input geometric parameter are carried out to wall element by REBAR LAYER orders
With unit material parameter.
6. prefabricated assembled concrete shear wall overall structure finite element modeling method according to claim 1, its feature
It is that the 3rd described step comprises the following steps：
The feature wall body construction established is carried out by assembly by connection unit, by the seam crossing stress performance of gained in the first step
Each connection unit is assigned, it is limited to form the prefabricated assembled shear wall overall structure to be matched with overall structure three-dimensional CAD model
Meta-model, and the model conversion is deposited into ABAQUS relevant work catalogues, in ABAQUS CAE runnable interfaces into INP files
Lower calling this document can directly generate prefabricated assembled shear wall overall structure FEM model.
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| CN110008625A (en) * | 2019-04-16 | 2019-07-12 | 广东华坤建设集团有限公司 | The FEM Analysis method of assembled architecture prefabricated components structural mechanical property |
| CN110532580A (en) * | 2019-01-25 | 2019-12-03 | 中国建筑股份有限公司 | A kind of half refined numerical simulation method of prestressing force prefabricated concrete structure node |
| CN110955989A (en) * | 2019-10-31 | 2020-04-03 | 中国二十冶集团有限公司 | Finite element modeling method for overall structure of fabricated precast concrete shear wall |
| CN113177253A (en) * | 2021-05-11 | 2021-07-27 | 安徽建筑大学城市建设学院 | Nonlinear analysis method of novel laminated shear wall |
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| CN113177253A (en) * | 2021-05-11 | 2021-07-27 | 安徽建筑大学城市建设学院 | Nonlinear analysis method of novel laminated shear wall |
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