| 地面堆载对变截面地埋管线影响分析 |
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| 引用本文： | 蔡忠祥,张陈蓉,黄茂松.地面堆载对变截面地埋管线影响分析[J].岩土力学,2011,32(Z1):408-0412. |
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| 作者姓名： | 蔡忠祥 张陈蓉 黄茂松 |
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| 作者单位： | 同济大学地下建筑与工程系;同济大学岩土与地下工程教育部重点实验室 |
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| 基金项目： | 国家杰出青年基金资助项目(No.50825803) |
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| 摘 要： | 地埋管线在市政建设中容易损坏,基于Winkler地基模型,将地埋管线简化为变刚度Euler-Bernoulli梁,根据梁单元微分方程,采用传递矩阵法求解梁截面处位移、转角、弯矩及剪力,给出变刚度梁的一般分析方法。通过算例验证方法的合理性和适用性,分析了接头刚度变化对管线位移、内力的影响,为市政建设中地埋管线保护提供理论指导。
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| 关 键 词： | 地埋管线 传递矩阵法 接头刚度 Winkler地基模型 |
| 收稿时间： | 2011-01-19 |
Analysis of influence of surcharge loads on buried pipelines with variable cross-section |
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| CAI Zhong-xiang,ZHANG Chen-rong,HUANG Mao-song.Analysis of influence of surcharge loads on buried pipelines with variable cross-section[J].Rock and Soil Mechanics,2011,32(Z1):408-0412. |
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| Authors: | CAI Zhong-xiang ZHANG Chen-rong HUANG Mao-song |
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| Institution: | 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092 China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China |
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| Abstract: | Municipal construction causes damage to nearby pipelines. Based on the Winkler foundation model, which simplified the pipeline as Euler-Bernoulli beams of variable stiffness, the transfer matrix method is proposed to analyze the performance of the pipeline according to the beam’s element differential equation. This method is verified by comparing with analytic solutions for beam with constant stiffness section. Then it shows the influence of joint stiffness on the deflection and internal force of the pipelines. It’s hoped that the work above can supply technical support and guidance to the design and construction of pipelines |
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| Keywords: | buried pipeline transfer matrix method joint stiffness Winkler foundation model |
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