对钢筋混凝土矩形柱小偏心受压计算方法的讨论*
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（1 工程结构与新材料北京市高等学校工程研究中心， 北京建筑大学土木与交通工程学院， 北京 100044； 2 清华大学结构工程与振动教育部重点实验室， 清华大学土木工程系， 北京 100084）［摘要］考虑在设计中受压和受拉钢筋的配筋率之和不超过5%，而且轴向压力不会超过截面轴心受压的承载力，通过推导得出，当混凝土强度不超过C50，钢筋为HRB400时，钢筋混凝土柱小偏心受压时相对受压区高度ξ几乎不会达到h/h0，也就是说不会出现全截面受压的情况，钢筋混凝土柱小偏心受压时相对受压区高度ξ总是满足ξb<ξ<h/h0。［关键词］钢筋混凝土; 小偏心受压; 计算方法; 矩形柱中图分类号：TU375.3 文献标识码：A 文章编号：1002-848X(2013)21-0066-03Discussion on method of calculation for reinforced concrete rectangular compression column with small eccentricityZhu Lei1, Ye Zhenxiang2(1 Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials, School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2 Key laboratory of Structural Engineering and Vibration of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China)Abstract: It is considered that the total compressive and tensile reinforcement ratio is not beyond 5% in design and the axial compression will not be higher than the axial compressive capacity. Therefore, it is derived that the relative compressive height ξ will hardly reach h/h0 for C50 concrete and HRB400 reinforcement in the RC compression column with small eccentricity, i.e., the whole compressive section case will not happen and the relative compressive height ξ will always hold ξb<ξ<h/h0.Keywords: reinforced concrete; compression section with small eccentricity; method of calculation; rectangular column*北京市属高等学校高层次人才引进与培养计划项目（CIT&TCD201304068）。作者简介：祝磊，博士，副教授，Email：zhulei@bucea.edu.cn。参考文献［1］叶列平. 混凝土结构（上册）［M］. 北京：中国建筑工业出版社，2012.［2］东南大学，天津大学，同济大学. 混凝土结构设计原理［M］. 5版. 北京：中国建筑工业出版社，2012.［3］刘立新，叶燕华. 混凝土结构原理［M］. 新1版. 武汉：武汉理工大学出版社，2011.
