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（1 中國(guó)地震局工程力學(xué)研究所，中國(guó)地震局地震工程與工程振動(dòng)重點(diǎn)實(shí)驗(yàn)室，哈爾濱 150080；2 清華大學(xué)土木工程系， 北京 100084； 3 上海中巍結(jié)構(gòu)設(shè)計(jì)事務(wù)所有限公司， 上海 200135）

［摘要］在《鋼骨混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)程》（YB 9082—97）中，對(duì)于配置不對(duì)稱鋼骨的鋼骨混凝土柱，其正截面承載力計(jì)算采用了偏于安全地置換為對(duì)稱鋼骨截面的方法。這種方法可能過(guò)分偏于保守，不適合于截面不對(duì)稱性較大的鋼骨混凝土柱的設(shè)計(jì)?；谝话惘B加方法，給出了計(jì)算配置不對(duì)稱鋼骨的鋼骨混凝土柱正截面壓彎承載力的改進(jìn)的簡(jiǎn)單疊加方法，計(jì)算結(jié)果與理論結(jié)果基本吻合。本方法已被新版《鋼骨混凝土結(jié)構(gòu)技術(shù)規(guī)程》（YB 9082—2006）所采納。

［關(guān)鍵詞］鋼骨混凝土柱; 正截面承載力; 疊加方法

中圖分類號(hào)：TU375.3      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：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

*中國(guó)地震局工程力學(xué)研究所基本科研業(yè)務(wù)費(fèi)專項(xiàng)（2013B13），國(guó)家自然科學(xué)基金青年科學(xué)基金項(xiàng)目（51308514）。

作者簡(jiǎn)介：曲哲，博士，副研究員，Email: quz@iem.ac.cn。

參考文獻(xiàn)

［1］葉列平, 趙樹(shù)紅, 方鄂華. 鋼骨混凝土構(gòu)件正截面承載力計(jì)算［J］. 工程力學(xué), 1999，16(2): 29-36.

［2］葉列平, 劉鳳閣. 鋼骨鋼筋高強(qiáng)混凝土構(gòu)件的正截面承載力計(jì)算［C］//第二屆高強(qiáng)混凝土及其應(yīng)用學(xué)術(shù)討論會(huì)論文集.1995: 163-168.

［3］葉列平. 鋼骨混凝土柱的設(shè)計(jì)方法［J］. 建筑結(jié)構(gòu), 1997,27(5): 8-12.

［4］GB 50010—2002 混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社, 2002.