| 大面积地表荷载作用下的埋深管线的应力分析 |
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| 引用本文： | 刘力伟,何辉.大面积地表荷载作用下的埋深管线的应力分析[J].港工技术,2007(1):22-24. |
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| 作者姓名： | 刘力伟 何辉 |
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| 作者单位： | 天津大学建工学院,天津,300072;泰达化学工业区总公司,天津,300480 |
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| 摘 要： | 当地下埋深管线两侧受到不同的附加压力时,由于压差的存在使管线发生了弯曲变形。弯矩的产生可能导致管线的破坏。根据埋深管线的受力特点,采用弹性地基梁的短梁初端参数法对渤西管线的应力进行了分析。根据管线的埋深条件对边界条件进行了正确的处理,求得了管线的位移,弯矩及剪力方程,并绘制了位移,弯矩及剪力方程曲线,曲线之间具有一一对应的关系,计算的结果表明了对边界处理的正确性及理论选择的合理性。
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| 关 键 词： | 埋深管线 附加应力 弹性地基梁 强度 |
| 文章编号： | 1004-9592（2007）01-0022-03 |
| 修稿时间： | 2005-08-09 |
Stress analysis of buried pipeline undergoing surface load within a large area |
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| LIU li-wei,HE Hui.Stress analysis of buried pipeline undergoing surface load within a large area[J].Port Engineering Technology,2007(1):22-24. |
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| Authors: | LIU li-wei HE Hui |
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| Institution: | 1. Tian jin university, college of civil engineering ,institute of geotechnical engineering; 2. then TEDA chemical industrial park corporation, Tianjin 300480,China |
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| Abstract: | When a buried pipeline undergoes the different additional pressure,it will distort and become deformed due to the pressure difference.The induced bending moment may lead to destructibility of the pipeline.According to the trait of strength that the pipeline undergoes all around,the solutions of initial point parameters of the elastic foundation beam is taken to analysis the stress of the pipeline.According to conditions that the pipeline is buried in the soil,boundary conditions are dealt with correctly.The equations of displacement,shear force and bending moment of the pipeline are obtained,and the characteristic curves are drawn.The calculation results show that the curves are related well with one another.The results can be consulted by the engineers for pipeline protecting. |
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| Keywords: | buried pipeline additional stress elastic foundation beam strength |
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