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某超長(zhǎng)混凝土結(jié)構(gòu)溫差效應(yīng)分析及構(gòu)造措施

張 堅(jiān)，徐以緯，虞煒，楊必峰，路 崗(上海建筑設(shè)計(jì)研究院有限公司，上海 200041)

［摘要］杭州某項(xiàng)目地下室為雙向超長(zhǎng)結(jié)構(gòu)，上部主樓為單向超長(zhǎng)結(jié)構(gòu)，溫差收縮效應(yīng)顯著，一般構(gòu)造措施難以滿足要求。采用有限元方法對(duì)結(jié)構(gòu)的溫差收縮效應(yīng)進(jìn)行詳細(xì)的分析，得到溫度應(yīng)力分布的規(guī)律及數(shù)值。在分析結(jié)果的基礎(chǔ)上，對(duì)不同部位采取不同的對(duì)應(yīng)措施，有效地解決了溫差收縮效應(yīng)帶來的不利影響，對(duì)超大、超長(zhǎng)混凝土結(jié)構(gòu)設(shè)計(jì)有一定的參考價(jià)值。

［關(guān)鍵詞］ 超長(zhǎng)建筑；溫差效應(yīng)；溫度應(yīng)力；裂縫控制

中圖分類號(hào)：TU318.8文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)01-0063-05

Analysis and details of temperature variation effects on an overlong concrete structure

Zhang Jian, Xu Yiwei, Yu Wei, Yang Bifeng, Lu Gang

(Shanghai Institute of Architectural Design & Research Co., Ltd., Shanghai 200041, China)

Abstract:An overlong concrete structure with a bilateral overlong basement was accompanied by significant temperature variation  and shrinkage effect, and the design demand could not be satisfied by common detailing methods. The temperature variation and shrinkage effects of the structure were analyzed in details by using finite element method, and the distribution of temperature stress was obtained. Based on the analysis results, different practical measures were used, which effectively reduced the negative results of temperature variation and shrinkage effects. The experience in this project could be a useful reference for similar mass and overlong concrete structures.

Keywords:overlong structure; temperature variation effect; temperature stress; crack control

作者簡(jiǎn)介：張堅(jiān)，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:zhangjian@siadr.com.cn。

參考文獻(xiàn)

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