- 摘 要
-
(1 中国地震局工程力学研究所,中国地震局地震工程与工程振动重点实验室,哈尔滨 150080;2 清华大学土木工程系, 北京 100084; 3 上海中巍结构设计事务所有限公司, 上海 200135)
[摘要]在《钢骨混凝土结构设计规程》(YB 9082—97)中,对于配置不对称钢骨的钢骨混凝土柱,其正截面承载力计算采用了偏于安全地置换为对称钢骨截面的方法。这种方法可能过分偏于保守,不适合于截面不对称性较大的钢骨混凝土柱的设计。基于一般叠加方法,给出了计算配置不对称钢骨的钢骨混凝土柱正截面压弯承载力的改进的简单叠加方法,计算结果与理论结果基本吻合。本方法已被新版《钢骨混凝土结构技术规程》(YB 9082—2006)所采纳。
[关键词]钢骨混凝土柱; 正截面承载力; 叠加方法
中图分类号:TU375.3 文献标识码:A 文章编号:1002-848X(2014)07-0099-06
Simplified calculation on normal section bearing capacity of steel-reinforced concrete columns with eccentrical sections
Qu Zhe1, Wang Peng1, Ye Lieping2, Cui Hongchao3
(1 Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, CEA, Harbin 150080, China; 2 Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 3 China Majesty Structure Design Office, Co., Ltd., Shanghai 200135, China)
Abstract: The provisions in the Technical Specification of Steel-Reinforced Concrete Structures(YB 9082—97)suggest any eccentric steel reinforcement in the steel-reinforced concrete (SRC) cross section should be replaced by equivalent symmetric ones in security when calculating its normal section bearing capacity. Such replacement method can be over-conservative estimates and not be suitable for design of SRC columns with larger eccentrical sections. An improved simplified calculation method for the axial and flexural strength of eccentric steel reinforced concrete column was proposed based on the sectional superposition method. The validity of the method was demonstrated by comparing the results with those given by rigorous sectional analysis. The method was adopted by the new revised Technical Specification of Steel-Reinforced Concrete Structures(YB 9082—2006).
Keywords: Steel-reinforced concrete column; normal section bearing capacity; superposition method
*中国地震局工程力学研究所基本科研业务费专项(2013B13),国家自然科学基金青年科学基金项目(51308514)。
作者简介:曲哲,博士,副研究员,Email: quz@iem.ac.cn。
参考文献
[1]叶列平, 赵树红, 方鄂华. 钢骨混凝土构件正截面承载力计算[J]. 工程力学, 1999,16(2): 29-36.
[2]叶列平, 刘凤阁. 钢骨钢筋高强混凝土构件的正截面承载力计算[C]//第二届高强混凝土及其应用学术讨论会论文集.1995: 163-168.
[3]叶列平. 钢骨混凝土柱的设计方法[J]. 建筑结构, 1997,27(5): 8-12.
[4]GB 50010—2002 混凝土结构设计规范[S]. 北京:中国建筑工业出版社, 2002.