Shaking Table Test And Elastic-plastic Seismic Response Analysis Of Two-story Brick-concrete Storefront

With the economic development and rural transport infrastructure construction, Farmers often choose convenient location beside the road and town street when build new house. On the basis of meet the living function, the new house also has business and lease function. The majority of rural storefronts are two-story brick-concrete houses, they have large openings and concrete column in front of the house. They also have cantilever on the second floor and always have no structure column on their backwall.As seismic fortification measures of them were incomplete and farmers built them as one please, they were badly damaged in past earthquakes after Wenchuan earthquake. This paper takes this type of building as the research object. The main research contects and results are as follows:(1) By collecting and sorting earthquake damage survey data of our studying team, this paper study common problems of this type of rural in seismic safety aspect.(2) A representative structure model is designed based on two-story brick-concrete storefront protype by field survey. Shaking table test of the model which is 1/2 of the protype is conducted, in which cracking and failure modes, natural vibration behaviors, acceleration and displacement responses under different earthquake intensities are studied. Evaluate the seismic performance of two-story brick-concrete storefront.(3) To make numerical modal analysis and elastic-plastic history analysis for shaking table test model of two-story brick-concrete storefront by ANSYS/LSDYNA finite element software. By comparing dynamic characteristics and displacement responses between finite element model and actual model, we can prove the feasibility of FEM simulation and the rationality of the test results.(4) Based on the analysis above, we made numerical elastic-plastic history analysis of other structure models with different design condition. The sesmic response of models in different seismic precautionary intensity was studied. We explore the basic design requirement of two-story brick-concrete storefront which can satisfy safety request of seismic resistance. Meanwhile we make proposal for the revision of < Sesimic technical specification for building construction in town and village >.