地层变形对埋地管道的影响分析.pdfVIP

中国捧水排水 Vol. 24 No.7 第 24 卷第7 期 2∞8 年4 月 CHINA WATER WAST院WATER Apr.2008 地层变形对埋地营造的影响分析 孙宇坤1 ， 邵 :股2 (1.浙江工业大学教育科学与技术学院，浙江杭州 31∞14; 2. 浙江大学市政工程 研究所，浙江杭州 310027) 摘 3骂: 由于埋地管道乌土体之间存在管、土相互作用，地震、地面不均匀沉降等地，层变形均 会导政管道受力、变形而被破坏。管道的位移和力学响应通常与管材、理耀、土质类型等因素有关。 通过建立非线性有限元，管、土相互作用模型，模拟了钢管、UPVC 管和预应力钢筋混凝土管在给定 的地层变形条件下的位移和力学特征，并对管道埋深和土质类型等因素的影响进行了参数分析。 结果表明，不同材质管道的位移量排序为 UPVC 管〉钢管〉混凝土管，浅埋和软地基均可使管道受 力和变形减小。 关键询: 埋地管道; 地层变形; 管道受力 中图分类号: TU992 文献标i只码: C 文章编号: 1000 - 4602 (2008) 07 - 0052 甲 05 Analysis of E町ect of Ground Deformation on Buried Pipe SUN Yu-kun 1 , SHAO Yi (1. School 01 Educαtion Science αnd Technology. Zhejiang Un阴阳ty 0/ Technology. Hangzhou 310014. China; 2. Municipal Engineering Institute. Zhejiαng University , HIαngzhou 310027 , Chinα) Abstract: 币le ground defonnation caused by earthquake , soil differential settlement often induces damage of the buried pipe due to pípe翩soil interaction. The displacement and mechanical response of bur- ied pipe are influenced by many factors such as pipe materials , buried depth and soil types. By establis翩 hing the nonlinear finite-element model of pipe-soil interaction , the displacement and mechanical re幽 sponse of the buried steel pipe , UPVC pipe and prestressed concrete pipe under a specified ground dφ fonnation were simulated , and the parametric analysis on influence of buried depth and soíl types was c缸 ried out. 叽le results show that the displacement of UPVC pípe is larger than that of steel pipe , and 由e displacement of steel pi