Non-linear Finite Element Simulation Analysis Of Low-rise Shear Wall With Embedded Pipes

Shear wall structure as the main component to resist lateral force are widely used inengineering construction. The low-rise shear wall of which the height-width ratio is lessthan1often appears in the big space bottom high-rise building, because of the limitationof the wall height. The failure mode of the low-rise shear wall is fragile shear destruction,the seismic performance is poor; The vertical seams wall achieved good results inimproving the low-rise shear wall seismic performance, and get a wide application in theengineering; but the application of low-rise shear wall with vertical seams in engineeringis limited because of its construction complicated.Reference for cast-in-situ concrete hollow floor structure and low-rise shear wallwith vertical seams technology, a new type of lateral force resistant structure—thelow-rise shear wall with hollow pipe embedded was put forward which is environmentalprotection and energy saving. For now, the experimental research, theoretical analysisand engineering practice for cast-in-situ concrete hollow vertical component to resistlateral force (wall, column, etc.) are rare at home and abroad, the current specificationsalso does not have the corresponding norms, therefore, to carry out the research andpractice of this project has good economic, social and environmental benefits, also forthis kind of new structure to resist lateral force will provide a scientific basis forengineering application.This article uses the finite element analysis software of ABAQUS to simulate andanalyse the mechanical properties of the low-rise shear wall with hollow pipe embedded,which verified that using the hollow pipe embedded can improve the ductility、seismicindicators, etc of the low-rise shear wall. The results also provide technical basis for thelatter phase of the specimens design and test. In this paper, the main research contents andrelevant conclusions are as follows:（1）Using the existing reinforced concrete hollow shear wall with vertical seams、the whole section low-rise shear wall、the low-rise shear wall with vertical straight-lintjoint as the objects of the finite element analysis, the numerical simulation andexperimental results of load-displacement curve were compared, which verified theeffectiveness of the established nonlinear finite element model.（2）The study compared the failure pattern and force mechanism of different shearwalls including the low-rise shear wall with vertical straight-lint joint、the low-rise shear wall with vertical seams、the low-rise shear wall with hollow pipe embedded and thewhole cross section low-rise shear wall; analyzed the hysteretic characteristics, bearingcapacity, displacement ductility, rigidity degeneration and energy dissipationperformance, and then a new kind of economical structure—the low-rise shear wall withhollow pipe embedded to resist lateral force was put forward.（3）Analyzed the influence on low-rise shear wall seismic performance of manydifferent parameters such as the different pipe diameter、different height-width ratio、embedded pipes in different size and quantity、different axial compression ratio, and onthe basis of a lot of simulations reasonable ratio was put forward,which will provide areference for engineering practice.