矩形截面混凝土框架柱斜向受剪承载力研究
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董春敏，周淼（河南理工大学土木工程学院, 焦作 454000）［摘要］通过14根矩形截面框架柱在斜向水平荷载作用下的受剪试验，研究其斜向受剪承载力的计算方法。基于单向桁架拱模型，建立了一个双向桁架拱模型。为了验证该计算模型的可行性，利用此方法对本试验的14根框架柱及其他文献中的16根框架柱的斜向受剪承载力进行了计算。试验结果和计算值的比值表明，基于双向桁架拱模型推导的计算公式可以安全估算矩形截面框架柱斜向受剪承载力，满足工程需要。［关键词］双向桁架拱模型； 双向受剪承载力； 矩形截面框架柱； 斜向水平荷载中图分类号：TU375.3文献标识码：A文章编号：1002848X(2013)12004304Research on oblique shear strength of concrete frame column with rectangular cross sectionDong Chunmin， Zhou Miao（School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China）Abstract:To investigate the calculation method of oblique shear strength of rectangular frame column, a total of 14 specimens under oblique horizontal loads were test. A bilateral trussarch model was proposed developed on the base of the unilateral trussarch model. To verify the feasibility of the bilateral trussarch model, the oblique shear strength of 30 specimens among which 16 specimens were made by other researchers were calculated. The comparison between test results and calculations shows that the developed model is safe to evaluate oblique shear strength of rectangular frame columns subjected to oblique loads, which satisfies the engineering requirement.Keywords:bilateral trussarch model; bilateral shear strength; rectangular frame column; oblique horizontal load*河南省教育厅自然科学研究计划项目（2009A560007），河南理工大学博士基金项目（B20087）。作者简介：董春敏，博士，副教授，Email:dongchunmin@126.com。参考文献［1］王威, 薛建阳, 章红梅, 等.框架结构在汶川512大地震中的震害分析及抗震启示［J］.世界地震工程, 2009, 25(4): 131135.［2］GB 50010—2010 混凝土结构设计规范［S］.北京：中国建筑工业出版社，2011.［3］董春敏.不等肢配箍矩形截面框架柱斜向受剪承载力试验研究［D］.天津:天津大学,2007.［4］Comité Eurointernational Du Béton. Cebfip model code 1990: design code ［M］. London: Thomas Telford LimitedPublishing, 1993.［5］叶列平.混凝土结构（上册）［M］. 北京:清华大学出版社,2002.［6］THOMAS T C HSU. Stresses and crack angles in concrete member element ［J］. Journal of Structural Engineering,ASCE, 1998, 124(12):14761484.［7］VECCHIO FRANK J, COLLINS MICHAEL P. Modified compressionfield theory for reinforced concrete elements subjected to shear［J］.ACI Structural Journal, 1986, 83(2): 219231.［8］贺志启,刘钊,张宇峰.基于桁架拱叠加模型的体外预应力混凝土梁抗剪承载力计算方法［J］.土木工程学报, 2010,43(1):5662.［9］中国建筑科学研究院. 混凝土结构设计［M］.北京:中国建筑工业出版社, 2003.［10］抗剪强度专题研究组.钢筋混凝土框架柱的抗剪强度［J］.建筑结构学报,1987,32(3):2335.
