拉薩體育場(chǎng)溫差效應(yīng)分析及技術(shù)措施研究
田瑞俊
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(中國(guó)航天建筑集團(tuán)有限公司, 北京 100071)[摘要]拉薩體育場(chǎng)下部看臺(tái)及上部鋼桁架均采用無縫設(shè)計(jì)方案，超長(zhǎng)結(jié)構(gòu)所致的溫差效應(yīng)顯著，采用有限元方法對(duì)混凝土的收縮和徐變以及整體結(jié)構(gòu)的溫度作用效應(yīng)進(jìn)行了詳細(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技術(shù)措施，有效地解決了溫差收縮效應(yīng)帶來的不利影響，對(duì)類似超長(zhǎng)結(jié)構(gòu)設(shè)計(jì)有一定的參考價(jià)值。[關(guān)鍵詞]拉薩體育場(chǎng); 溫差效應(yīng); 溫度應(yīng)力; 技術(shù)措施中圖分類號(hào)：P426.62+1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)s1-0658-04Analysis of temperature effect and technique measures on LASA StadiumTian Ruijun(China Aerospace Construction Group Co. , Ltd. , Beijing 100071, China)Abstract: The seamless designation was adopted by the grandstand and the upper steel truss of LASA Stadium. Temperature effect caused by the super-long structure is significant. The temperature variation and shrinkage effects of the structure were analyzed in details by using FEM, and the distribution of temperature stress was obtained. Based on the analysis results, different technique measures were taken, which effectively reduced the negative results caused by temperature variation and shrinkage effects. The experience in the project could be a useful reference for similar structure.Keywords: LASA Stadium; Temperature effect; temperature stress; technique measures作者簡(jiǎn)介：田瑞俊，碩士，工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師, Email:Tianruijun521@yahoo.com.cn。
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