李耕勤  钱稼茹    （清华大学土木系  北京 100084）

    顾万黎    （中国建筑科学研究院  北京 100013）

[提要]  完成了5个不同轴压比、不同截面形式的抗震墙试件在往复水平荷载作用下的试验，抗震墙的约束边缘构件按《建筑抗震设计规范》( GB50011-2001)设置，分布筋采用冷轧带肋钢筋焊接网。计算分析了4片设有约束边缘构件和构造边缘构件的抗震墙边缘混凝土达到极限压应变时，竖向分布冷轧带肋钢筋的最大拉应变；用DRAIN 2D+程序对一幢一级（8度）采用冷轧带肋钢筋焊接网为分布筋的抗震墙结构进行了大震作用下的弹塑性时程分析。研究结果表明，通过合理设计，采用冷轧带肋钢筋焊接网作为分布筋的抗震墙能够满足抗震要求。在此基础上，给出了冷轧带肋钢筋焊接网抗震墙的设计建议。
[关键词]  冷轧带肋钢筋焊接网  抗震墙  约束边缘构件  抗震性能  设计建议

Pseudo-static experiment of five solid shear wall specimens with different axial load ratio and different section type has been carried out.The confined boundary elements of the speclmens were designed according to Code for Seismic Design of Buildings ( GB50011-2001 ) and the cold-rolled ribbed welded steel fabrics were used as the distributed reinforcements. By calculating, the maxlmum tension strain of the cold-ribbed welded steel of the RC shear wall with confined boundary elements or with ordinary boundary elements is studied as the maximum compressive strain of concrete reaches its limited value. The elastic-plastic time history analysis for a grade one ( seismic fortification intensity 8) RC cold-rolled ribbed welded steel fabric shear wall building structure under the severe earthquake is performed with the DRAIN 2D+ program.Based on the achievements of this study, the design recommendations are presented.
Keywords: cold-rolled ribbed welded steel fabric; shear wall; confined boundary element; seismic behavior; design