（1 华南理工大学土木工程系， 广州 510640； 2 中核能源科技有限公司， 北京 100193）

［摘要］为研究核岛厂房中低剪跨比钢筋混凝土剪力墙的抗震性能，完成了6片剪跨比为0-5的剪力墙试件在恒定轴力作用下的拟静力试验。考察了不同轴力水平下试件的破坏形态、受剪承载力、变形性能和抗震性能。结果表明：轴压比为0-3和0-5的试件，其破坏模式为斜压破坏或斜压后滑移破坏，而承受轴拉力的2个试件（轴拉比均为0-1）分别发生剪切滑移破坏和拉剪破坏；增大轴压比在一定程度上提高了剪力墙受剪承载力，但其骨架曲线下降更快，位移延性变差；受拉试件的受剪承载力明显低于受压试件；斜压破坏试件的耗能很差，斜压后滑移破坏试件因后期竖向钢筋的销栓作用而耗能相对较好，拉剪破坏及剪切滑移破坏试件的耗能性能较差。

［关键词］低剪跨比； 钢筋混凝土剪力墙； 拟静力试验； 抗震性能

中图分类号：TU375文献标识码：A文章编号：1002-848X(2018)16-0078-05

Quasi-static tests on small shear-span-ratio reinforced concrete shear walls in nuclear island buildings

Wei Feng1, Sun Yunlun2, Xie Yuejun1, Zhang Junhua1, Su Cheng1

(1 Department of Civil Engineering, South China University of Technology, Guangzhou 510640, China; 2 Chinergy Co.,  Ltd., Beijing 100193, China)

Abstract:To study seismic behaviors of small shear-span-ratio reinforced concrete (RC) shear walls in nuclear power plant buildings, quasi-static tests on six RC shear wall specimens with  shear-span-ratio of 0-5 were carried out under constant axial load. The effects of axial load ratio on the failure mode, shear capacity, deformation capacity and seismic performance were investigated. Test results show that diagonal compression (DC) failure or sliding after diagonal compression (SDC) failure occurred in the specimens under compression with axial load ratio of 0-3 and 0-5. For two specimens under tension with axial  load ratio of 0-1, tension shear (TS) failure occurred in one specimen and shear sliding (SS) failure occurred in another specimen. Shear capacities of specimens under compression increase to some extent, but skeleton curves drop faster and displacement ductility becomes worse with the increase of axial load ratios. Shear capacities of the specimens under tension are significantly lower than those of the specimens under compression. The energy dissipation capacities of the specimens suffered DC failure are very poor while those of the specimens suffered SDC failure are relative good due to the pin bolt effect, and the energy dissipation capacities of the specimens suffered TS and SS failure are poor.

Keywords:small shear-span-ratio; reinforced concrete shear wall; quasi-static test; seismic behavior

*国家科技重大专项项目（2014ZX06902011）。

作者简介：韦锋，博士，副教授，Email：ctfwei@scut.edu.cn。