抗震剪力墙结构小跨高比连梁承载力计算分析
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(1 河南大学土木建筑学院,开封 475004; 2 香港华艺设计顾问(深圳)有限公司,深圳 518031)[摘要]基于拉、压杆模型理论,分析了小跨高比连梁内部传力机制,确定其受弯、受剪承载力。分别计算了三种抗剪机制承担剪力的大小,由叠加法和杠杆法分别确定最终受剪、受弯承载力。计算结果与试验结果对比分析表明,推导的小跨高比连梁承载力计算公式与试验结果基本吻合,由计算剪弯比确定的小跨高比连梁破坏模式与实际破坏模式一致。[关键词]小跨高比连梁;受弯;受剪;承载力;破坏模式Calculation and analysis on deep coupling beams bearing capacity of seismic shearwall structureLiu Qingshan1, Zhang Wei2(1 School of Civil Engineering and Architecture of Henan University, Kaifeng 475004, China;2 Hongkong Huayi Design & Consultant Co., Ltd., Shenzhen 518031, China)Abstract:The translation of inner force is analyzed with the strut-and-tie model, and the bearing capacity formula of shear and bend is deduced. The shear of each model is calculated separately and superimposed to establish the shear bearing formula. The formula of bend is established by lever principle. The comparison result shows that the test value agree with calculation value well, and the calculating failure pattern according to the bearing capacity ratio of shear and flexure is quite identical with the test result.Keywords:deep coupling beam; bend; shear; bearing capacity; failure patten河南省教育厅自然科学研究资助项目(2008A560001)。作者简介:刘清山,博士,副教授,Email:greenhillliu@163.com。参考文献[1]刘清山.抗震剪力墙小跨高比连梁的理论分析及试验研究[D].西安:西安建筑科技大学,2006.[2]梁兴文,刘清山,李萍.新配筋方案小跨高比连梁的试验研究[J].建筑结构,2007,37(12):26-29.[3]李方圆,梁兴文,张涛.新配筋方案小跨高比连梁受剪承载力计算[J].建筑结构,2009,39(8):48-49.[4]刘清山,梁兴文.抗震剪力墙小跨高比连梁受剪承载力的软化拉压杆模型[J].建筑科学,2008,24(7):5-9.[5]ZHAO Z Z, KWAN A K H,HE X G. Nonlinear finite element analysis of deep reinforced concrete coupling beams[J]. Engineering Structures, 2004, 26(1):13-25.[6]赵国藩.工程结构可靠性理论与应用[M].大连:大连理工大学出版社,1996.[7]刘清山,梁兴文.普通配筋小跨高比连梁的受剪承载力分析[J].建筑结构,2006,36(12):8-12.