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《Sichuan Building Science》 2017-04
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Research on seismic behavior of precast shear walls with the different positions of horizontal seams

LI Juan;SONG Hao;LIU Xiang;CUI Tao;School of Civil Engineering,Inner Mongolia University of Science and Technology;  
Seismic behavior of precast concrete shear wall with the different positions of horizontal seams were studied in this paper,so as to provide references for the engineering field. 2 precast shear wall specimens and a cast-in-place specimen with axial compression ratio of 0. 18 with full scale were tested under cyclic loading. In this loading system,force and displacement control were used. The 2 precast specimens were spliced by straight thread-grout sleeves,and selected the different positions of horizontal seams: the top of the ground beam and the top of the ground beam 600 mm. The test results showed that flexural failure appeared in both precast specimens with the different positions of horizontal seams and cast-in-place specimen,but the damage forms were different: horizontal through crack appeared in the post pouring strip of precast specimen easily. The bearing capacity,ductility and energy dissipation capacity of precast specimen were significantly improved with the position of horizontal seam moved up. Deform-ability,stiffness degradation and energy dissipation capacity of the position of horizontal seam on the top of the ground beam of the precast specimen were similar to the cast-inplace specimen. Under quasi-static loading,the mechanical properties of precast specimens are slimier to that of cast-in-place one. The mechanical performance of the precast specimen with the position of horizontal seam moved up is better than the position of horizontal seam on the top of the ground beam of the precast specimen. The straight thread-grout sleeves can effectively transfer stresses and make the reinforcement work coordinately. The results of the study for the future in practical engineering application promotion provide experimental basis and reference.
【Key Words】: precast shear walls straight thread-grout sleeves the position of horizontal seam seismic behavior
【Fund】: 内蒙古自治区自然科学基金资助项目(12013MS730);; 包头市科技局计划项目(2014X1003-1)
【CateGory Index】: TU352.11;TU398.2
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