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(北京維拓時代建筑設(shè)計有限公司,北京100025)
[摘要] 某框架-剪力墻結(jié)構(gòu)地上長度接近100m,沒有設(shè)置伸縮縫,在施工階段溫差的變化對結(jié)構(gòu)構(gòu)件內(nèi)力會產(chǎn)生很大的影響。通過MIDAS/Gen軟件對整體結(jié)構(gòu)進(jìn)行施工階段溫度作用分析,得出結(jié)構(gòu)整體變形規(guī)律及各層結(jié)構(gòu)構(gòu)件在溫度荷載作用下的應(yīng)力變化。同時對溫度應(yīng)力較大部位的構(gòu)件,按考慮溫度作用的荷載組合進(jìn)行內(nèi)力設(shè)計,并在設(shè)計及施工中采取一些防裂措施。
[關(guān)鍵詞] 超長結(jié)構(gòu);溫度應(yīng)力;防裂措施
中圖分類號:TU375 文獻(xiàn)標(biāo)識碼:A 文章編號:
作者簡介:于燕華,高級工程師, Email:yuyanhua@vtjz.com。
Analysis of the temperature stress of super-length structure of a building
Yu Yanhua
(Beijing Victory Star Architectural & Civil Engineering Design Co., Ltd, Beijing 100025,China)
Abstract: Without contraction joint, the temperature deformation during construction will huge since the length of a frame-shear wall structure is about 100 meters. By using MIDAS/Gen to analyze the process of temperature effect and find how the structure deformed and how the stress of each layer changed. Thus, the critical members of temperature deformation can be find out and design them with temperature load combinations and then apply some crack control measures on them during construction.
Keywords: super-length structure; temperature stress; crack control measure
參 考 文 獻(xiàn)
[1] GB50009—2012建筑結(jié)構(gòu)荷載規(guī)范[S].北京:中國建筑工業(yè)出版社,2002.
[2] 王鐵夢.工程結(jié)構(gòu)裂縫控制[M].北京:中國建筑工業(yè)
出版社, 1997.
[3] DB21/T1745—2009 地下混凝土結(jié)構(gòu)防裂技術(shù)措施[S].沈陽:遼寧科學(xué)技術(shù)出版社,2009.
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