Experimental Study On The Seismic Behavior Of T-shaped Short Shear Wall With RAC

With the improvement of living standards, people’s requirements for residentialplane and space is getting higher and higher, especially for residential high-rise. Theordinary frame structure, with exposed beams and exposed columns and ordinary shearwall, has been strictly limiting buildings’ space, which can not meet people’srequirements of residential space. Therefore, A new structure form emerges, whichabsorbs the dual advantages of ordinary shear wall structure and framework, also canmeet peoples’ new concept of residential high-rise, namely short shear wall structure.At present, many domestic and foreign scholars have done a lot of experimental andtheoretical analysis on the performance of short-leg shear wall, but their scope ofstudies is still mainly concentrated on the performance of ordinary concrete short shearwall. Regarding recycled concrete short shear wall, There is very little research on that,almost in a blank state so far. Therefore,With their own performance characteristics ofRAC, Studying RAC and performance enhancements of RAC short shear wall seismicperformance, exploring practical seismic design method of RAC short shear wall, hasvery important significance in theoretical and practical engineering.To study the recycled concrete T-shaped short pier shear seismic performance,this paper has done the following work:（1）Based on the contrastive analysis of the different substitution rates, design15groups with45pieces of recycled concrete test blocks, the substitution rate willrespectively be0%,50%and100%. Through experiments, to study the cube compressive strength, axial compressive strength, modulus elasticity of the recycledconcrete test blocks, to analyze the effects of mechanical properties of recycledconcrete materials with different substitution rates, and also to study the concretecompression the stress-strain curves with different substitution rates, concluding theascent equation of recycled concrete constitutive model with different substitutionrates.（2）Regarding the different substitution rates and different axial compression ratios asparameters, design six T-shape short pier shear test models with1/2ratio of reducedscale, Do quasi-static test under low cyclic loading, study the failure mode, hystereticbehavior, carrying capacity, ductility, stiffness and energy dissipation capacity of the T-shaped short pier shear RAC, with different substitution rates, and with different axialcompression ratios when substitution rate is50%. Based on the test results, analyze thegeneral law of each performance index when coarse aggregate and axial compressionratio changes, then draw out some conclusions and recommendations for reference.（3）Based on the results of constitutive relations, reference research results, throughtheoretical analysis, a short limb regeneration concrete shear wall model with asimplified calculation formula and theoretical carrying capacity of the calculationresults with the experimental results contrast, both in good agreement, andrecommended that the formula of the restoring force model curve.（4）Based on the results of constitutive relations, In this paper, combining thesoftware ABAQUS to do finite element analysis, analyze its hysteresis curve andfailure modes, and discuss its energy dissipation capacity, and contrast with the testresults.