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（中國(guó)建筑科學(xué)研究院，北京 100013）

［摘要］通過13片高寬比為1.5、軸壓比為0.5的不同形式混凝土墻抗震性能試驗(yàn)研究，對(duì)比了不同形式剪力墻受剪破壞形態(tài)、極限承載力及延性性能。試驗(yàn)表明：截面兩端設(shè)置型鋼、鋼管或核芯柱的混凝土墻及墻內(nèi)設(shè)置型鋼或鋼筋暗斜撐的混凝土墻，可不同程度地提高剪力墻受剪承載力及延性；增加墻體分布筋配筋率也可提高剪力墻受剪承載力，但配筋率過高時(shí)，其延性很差。提出了兩端設(shè)置型鋼及墻內(nèi)設(shè)置暗斜撐的混凝土剪力墻受剪承載力設(shè)計(jì)計(jì)算公式，計(jì)算結(jié)果與試驗(yàn)比較吻合。還提出了剪力墻受剪截面控制條件的建議公式。

［關(guān)鍵詞］混凝土剪力墻；小剪跨比；受剪性能；暗斜撐；型鋼；高配筋率

Experimental study on shear behavior of concrete wall with different types of reinforcementSun Jianchao,  Xu Peifu,  Xiao Congzhen,  Sun Huizhong,  Wang Cuikun

(China Academy of Building Research, Beijing 100013, China)

Abstract:By quasi-static test of 13 wall specimens, the shear properties are studied for the shear failure mode, bearing capacity and hysteretic behavior of different types of shear walls. The height to width ratio for the specimens is 1.5, and the axial compression ratio is 0.5. The test results show that embedded steel shapes or core columns at two ends and the concealed bracing in shear wall can improve the bearing capacity and ductility of shear wall. Increasing of reinforcement can also increase the bearing capacity, but ultra high reinforcement may cause poor ductility. The recommended formula is quite consistent with experimental data. The shear force limitation for concrete wall section is also suggested.