| Double plate filled with concrete shear wall is a new double resistance to lateral force structure,connected steel frame and steel plate and double plate internal filling concrete,between both sides of the plate with vertical stiffeners or bolt connected together to form a double plate reinforced concrete infill wall structure.This kind of shear wall under earthquake showed lateral resistance and good ductility and energy consuming,convenient for construction and good.At home and abroad,the seismic performance of the structure is studied,but the relationship between the two stiffness matching of the steel frame and the composite shear wall is analyzed,and the reasonable suggestion of the value of the stiffness characteristic value is not put forward.In this paper,based on the experiment,the hysteretic behavior of double steel plate shear wall is analyzed by using ABAQUS finite element software,and the design formula of wall thickness of composite shear wall is obtained.The main contents are summarized as follows:(1)in accordance with the 1 / 3 scale design a single span two storey semi double plate in filled concrete shear wall specimens,complete specimens under low cyclic loading hysteretic performance test.Through the collection and processing of test data analysis,test pieces of stagnation hysteresis curve,skeleton curve,peak stiffness degradation curves,energy dissipation coefficient and failure mode hysteretic behavior.The experimental results show that the structure in under the action of horizontal load,high bearing capacity,better ductility and energy dissipation,at the beginning of loading shear wall first of all to bear horizontal load,loading late steel frame in shear,yield and energy dissipation(2)Using ABAQUS finite element software to establish a test specimen,get hysteretic curves,skeleton curves,stiffness degradation,bearing capacity degradation curve,test results verify the feasibility of the model;(2)using ABAQUS software to the establishment of the test specimen of finite element model,the simulation results are compared with the experimental results.The results showed that simulation of the hysteretic curve and skeleton curve and the experimental results are in good agreement,to verify the feasibility of the method of modeling and model.(3)in base test foundation,design the eight specimens,in inverted triangle load further analysis of the rigidity characteristic value and the lag performance.Analysis results show that:(1)steel frame composite shear wall under the inverted triangle load and plump hysteretic curve,lateral stiffness,good energy dissipation capacity.The structure performance is influenced by the characteristic value of stiffness.The increase of the rigidity characteristic value,the load capacity of the structure is reduced,the level of the shear wall is reduced,and the horizontal shear strength of the steel frame is increased.(2)the reasonable range of the stiffness characteristic value is 1.43 ~ 3.27.The stiffness of frame and shear wall is relatively matched,the structure of the overall force and the hysteretic performance is better.(4)according to the range of stiffness characteristic value,the formula for calculating the thickness of composite shear wall can be determined. |
