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考慮下部支承結(jié)構(gòu)協(xié)同變形的橢圓形弦支穹頂結(jié)構(gòu)溫度效應(yīng)研究*
劉紅波1,2,陳志華1,2,王哲2,周翠竹2,張智升2
摘 要
1 濱海土木工程結(jié)構(gòu)與安全教育部重點(diǎn)實(shí)驗(yàn)室(天津大學(xué)), 天津 300072; 2 天津大學(xué)建筑工程學(xué)院,天津 300072)
 
[摘要]空間結(jié)構(gòu)周邊約束剛度是影響結(jié)構(gòu)溫度變形和溫度應(yīng)力的主要因素之一。周邊約束剛度與支座剛度、下部支承結(jié)構(gòu)側(cè)向剛度有關(guān),而目前大部分研究中忽略了下部混凝土支承結(jié)構(gòu)側(cè)向剛度的影響,使得分析結(jié)果不能準(zhǔn)確反映結(jié)構(gòu)的實(shí)際狀態(tài)。以天津?qū)氎骟w育館橢球形弦支穹頂結(jié)構(gòu)為背景,建立包含下部混凝土支承結(jié)構(gòu)的整體模型,研究了下部支承結(jié)構(gòu)側(cè)向剛度對(duì)結(jié)構(gòu)溫度效應(yīng)的影響,發(fā)現(xiàn)合理考慮下部支承結(jié)構(gòu)的側(cè)向剛度可有效降低結(jié)構(gòu)的溫度應(yīng)力、溫度變形和支座反力。
[關(guān)鍵詞]寶坻體育館; 弦支穹頂; 下部支承結(jié)構(gòu); 協(xié)同變形; 溫度效應(yīng)
中圖分類號(hào):TU394      文獻(xiàn)標(biāo)識(shí)碼:A      文章編號(hào):1002-848X(2015)05-0010-04
 
Study on the temperature effect of elliptic suspen-dome structure considering the cooperative deformation with lower supporting structures
Liu Hongbo1,2, Chen Zhihua1,2, Wang Zhe2, Zhou Cuizhu2, Zhang Zhisheng2
 (1 Key Laboratory of Coast Civil Structure and Safety, Ministry of Education(Tianjin University), Tianjin  300072, China; 2 School of Civil Engineering, Tianjin University, Tianjin 300072, China)
 
Abstract: The circumjacent restriction rigidity of the large-span structures is an important factor  influencing thermal deformation and thermal stress. The circumjacent restriction rigidity is mainly determined by bearing rigidity and lateral stiffness of the lower supporting structures. However, due to lose sight of the lateral stiffness of the lower supporting structures, the analysis results can not reflect the practical conditions of the structures. Taking the elliptic suspen-dome for Baodi Gymnasium in Tianjin as an example, the integrated model including the lower supporting structures was built, while the influence of lateral stiffness of the lower supporting structures on the temperature effect was analyzed. The results show that the thermal stress, thermal deformation and bearing thrust induced by considering the lateral stiffness of the low supporting structures.
Keywords: Baodi Gymnasium; suspen-dome structure; lower supporting structure; cooperative deformation; temperature effect
*國(guó)家自然科學(xué)基金(51208355)。
作者簡(jiǎn)介:劉紅波,博士,副教授,Email:hbliu@tju.edu.cn。
 
參考文獻(xiàn)
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