回填土不均匀沉降引起管道力学性状变化的分析  

Analysis on Changes in Mechanical Properties of Pipeline Caused by Uneven Settlement of Backfill

作　　者：赵欢[1] 邓荣贵[1] 高阳[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031

出　　处：《路基工程》2014年第1期69-72,共4页Subgrade Engineering

基　　金：国家自然科学基金项目(41272321)

摘　　要：埋设于土基中的管道作为一种特殊的结构,对其可靠性与经济耐久性的要求较高。回填土地基的不均匀沉降会使管道发生开裂,甚至产生渗漏等工程事故。通过建立较为合理的计算模型,分析不均匀沉降引起管道上最大挠度、转角、弯矩的值,并确定应力集中的区域,为分析解决由于不均匀沉降引起管道的工程事故提供一种思路。Pipline embedded in soil foundation, as a special structure, requires higher reliability and economic durability. However uneven settlement of backfill soil foundation may cause cracks of the pipeline, even leakage or other engineering accident. By establishment of proper calculation model, the maximum deflection, eorner and bending moment of the pipeline caused by uneven settlement were analyzed, and then the area of stress concentration was confirmed, so as to offer basis for solution of engineering accidents caused by such reason.

关 键 词：回填土 地基 不均匀沉降 管道 力学性状 

分 类 号：TU433[建筑科学—岩土工程]