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（吉林省建苑設(shè)計(jì)集團(tuán)有限公司第五設(shè)計(jì)研究院， 長春 130011）

［摘要］在溫度荷載作用下，超長混凝土結(jié)構(gòu)的地下室頂板會(huì)經(jīng)常出現(xiàn)溫度裂縫。本文采用MIDAS/Gen軟件對(duì)吉林省長春市某超長混凝土結(jié)構(gòu)進(jìn)行了溫度荷載模擬分析，按工程的實(shí)際情況施加溫度荷載，獲得了該結(jié)構(gòu)在不利溫度荷載工況下的溫度應(yīng)力分布特點(diǎn)，并依據(jù)分析結(jié)果對(duì)需要加強(qiáng)的部分進(jìn)行了不同程度的加強(qiáng)。模擬結(jié)果表明在結(jié)構(gòu)剛度突變位置的溫度應(yīng)力較大，剛度改變?cè)酱笏謸?dān)的溫度應(yīng)力也就越大，同時(shí)該結(jié)果也證明了規(guī)范中對(duì)鋼筋混凝土結(jié)構(gòu)伸縮縫最大距離限制的必要性。

［關(guān)鍵詞］MIDAS/Gen； 超長地下混凝土結(jié)構(gòu)； 溫度應(yīng)力； 剛度突變

中圖分類號(hào)： TU375 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)：  1002-848X(2016)S1-0672-05

Study on the temperature stress influence of super-long concrete structure with MIDAS/Gen 

Jiang Haichuan, Sun Qifeng, Cheng Yingming, Huo Zhenxing， Bai Chunzhen

(Jilin Provincial Building Design & Research Institue Company, The Fifth Design and Research Institute, 

Changchun 130011, China)

Abstract: The super-long concrete structures′ roof often have some crack under the effect of temperature.  A concrete structure in Changchun City, Jilin Province, which is larger than the limit in Code for design of concrete structures was analyzed by the software of MIDAS/Gen. The structure was given the actual temperature load to get the distribution of stress, and use the result to enhance the structure. The simulation result indicates a phenomenon that the place where has the bigger stiffness change the bigger stress will be added, and the result can prove that the necessity to limit the size of concrete structure. 

Keywords: super-long concrete structures′ roof; temperature stress; stiffness change

作者簡介：姜海川，碩士，工程師,Email：15844151907@163.com。