埋地压力管道抗滑稳定性计算方法探讨  

Discussions on Calculation Methods for Sliding Stability of Buried Pressure Pipe

作　　者：卢瀚 LU Han(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《结构工程师》2025年第1期179-186,共8页Structural Engineers

摘　　要：埋地压力管道敷设方向改变时,其方向改变处节点会受到内压引起的推力。国内外常用的抗滑稳定性模型中用于抵抗该推力的土体抗力分布各不相同,在应用上存在分歧。结合相关工程案例,对各算法的计算原理进行阐述,并分析了各模型的优缺点和适用前提。进一步对国外近年来埋地压力管道抗滑研究的试验方法和理论进行探讨和总结,提出了在基本原理上,埋地压力管道抗滑移稳定性的本质是管-土相互作用。最后,建议采用简化公式拟合管-土相互作用试验数据,并以实际监测结果加以验证,作为下一步抗滑计算研究的方向。The unbalanced force in a bended pressure pipeline results from the internal pressure acting at the bend location.The distribution of soil resistance to this thrust varies between sliding stability models in domestic and international practices,and there is no consensus formed in application.Combined with relevant engineering cases,the calculation principles of each algorithm are described,and the advantages,disadvantages and applicable premises of each model are analyzed.The fundamental principle of subsurface pressure pipeline anti-slip stability is proposed to be the interaction between the pipe and soil,based on a discussion and summary of recent experimental methods and theories by foreign scholars.It is recommended to use simplified formulas to fit the experimental data of pipe-soil interaction,with actual monitoring results used for verification,as a direction for further research on anti-slip calculation.

关 键 词：压力管道 抗滑稳定性 土体约束力 管-土作用 

分 类 号：TU990.3[建筑科学—市政工程]