摘要
为了弥补采用弹性地基梁模型模拟塌陷区埋地管道与实际不符合的情况,兼顾Winkler弹性地基梁和弹性基础上的连续梁建立了岩溶塌陷区埋地管道的力学分析模型,并结合塌陷影响区与非塌陷影响区间的变形协调性,通过求解管轴挠曲线微分方程,得出了岩溶塌陷区埋地管道的挠度和应力的综合计算方法。通过与基于ABAQUS有限元模拟的仿真结果进行对比分析,表明该方法能够在满足精度要求的同时简化岩溶区管道工程的力学分析过程,可用于岩溶区埋地管道的工程实践。
In order to compensate for the fact that the elastic foundation beam model is used to simulate the buried pipeline in the collapsed area,a mechanical analysis model of the buried pipeline in the karst collapse area is established on the basis of the Winkler elastic foundation beam and the continuous beam on the elastic foundation.Combining the deformation coordination between the collapse affected area and the non⁃collapse affected area,the differential equation of the pipe axial deflection curve is solved.A comprehensive calculation system for the deflection and stress of buried pipelines in karst collapse areas is obtained.By comparing and analyzing the simulation results based on ABAQUS finite element simulation,the results show that the method can meet the accuracy requirements while simplifying the mechanical analysis process of pipeline engineering in karst areas,and can be used in the engineering practice of buried pipelines in karst areas.
作者
李乔楚
庄波
李联合
LI Qiaochu;ZHUANG Bo;LI Lianhe(Southwest Petroleum University,Chengdu 610500,China)
出处
《焊管》
2023年第4期23-30,共8页
Welded Pipe and Tube
基金
国家社会科学基金西部项目“‘双碳’目标下我国城市群能源系统碳达峰预测及差异化减排路径研究”(项目编号22XGL019)
四川省社会科学研究“十三五”规划基地项目“四川省能源系统低碳转型的驱动因素及政策研究”(项目编号20EZD039)。
