- 摘 要
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（1 華南理工大學(xué)土木工程系， 廣州 510640； 2 中核能源科技有限公司， 北京 100193）
［摘要］為研究核島廠房中低剪跨比鋼筋混凝土剪力墻的抗震性能，完成了6片剪跨比為0-5的剪力墻試件在恒定軸力作用下的擬靜力試驗?？疾炝瞬煌S力水平下試件的破壞形態(tài)、受剪承載力、變形性能和抗震性能。結(jié)果表明：軸壓比為0-3和0-5的試件，其破壞模式為斜壓破壞或斜壓后滑移破壞，而承受軸拉力的2個試件（軸拉比均為0-1）分別發(fā)生剪切滑移破壞和拉剪破壞；增大軸壓比在一定程度上提高了剪力墻受剪承載力，但其骨架曲線下降更快，位移延性變差；受拉試件的受剪承載力明顯低于受壓試件；斜壓破壞試件的耗能很差，斜壓后滑移破壞試件因后期豎向鋼筋的銷栓作用而耗能相對較好，拉剪破壞及剪切滑移破壞試件的耗能性能較差。
［關(guān)鍵詞］低剪跨比； 鋼筋混凝土剪力墻； 擬靜力試驗； 抗震性能
中圖分類號：TU375文獻標(biāo)識碼：A文章編號：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
*國家科技重大專項項目（2014ZX06902011）。
作者簡介：韋鋒，博士，副教授，Email：ctfwei@scut.edu.cn。
