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为研究在水平拼缝部位采用强连接的叠合板式剪力墙的抗震性能,完成了两个剪跨比为1.6的剪力墙试件的拟静力试验。结果表明,基础插筋面积较大的试件可以实现强连接,剪力墙的塑性部位由剪力墙与基础间水平拼缝上移至墙板内部,抗震性能接近现浇钢筋混凝土剪力墙;基础插筋面积较小的试件,塑性变形也首先出现在墙板本身,剪力墙与基础间水平拼缝张开宽度较小;两试件屈服荷载相差不大,但插筋面积较大的试件峰值荷载也较大;两试件极限顶点位移角处于1/62~1/45之间,变形能力满足《建筑抗震设计规范》(GB 50011—2010)要求。在试验研究基础上,采用ANSYS软件对试件受力过程进行数值模拟分析,分析与试验结果的对比表明,所建立的分析模型可以较好地模拟试件的受力过程和破坏形态。
In order to study the seismic performance of the ply shear wall with strong connection at the level seam, the pseudo-static test of two shear wall specimens with shear-span ratio of 1.6 was completed. The results show that the specimens with larger basement tendons can be connected strongly and the plastic part of the shear wall moves up to the interior of the wallboard by the horizontal joint between the shearwall and the foundation. The seismic performance is close to that of the cast-in-place reinforced concrete shear wall ; The specimen with smaller base insertion area had plastic deformation also first appeared in the wall panel itself, and the width of the horizontal patchwork between the shear wall and the foundation was small. The yield load of the two specimens did not differ much, The peak load of large specimen is also large. The displacement angle of the limit specimen between two specimens is between 1/62 and 1/45, and the deformation capacity meets the requirements of Code for Design of Seismic Design of Buildings (GB 50011-2010). Based on the experimental study, the numerical simulation analysis of the stress process of the specimen is carried out by ANSYS software. The comparison between the analysis and the test results shows that the established analysis model can simulate the stress process and the failure mode of the specimen well.