人民长江2024，Vol.55Issue(2)：171-178,210,9.DOI:10.16232/j.cnki.1001-4179.2024.02.022
过活断层倒虹吸地面压力管结构型式比较研究
Comparison of exposed penstock structures of inverted siphon crossing active faults
摘要
Abstract
In the past researches on inverted siphon penstock over active faults,two structural types of steel-lined reinforced concrete pipe and open steel pipe were often studied separately.There is no comparison on which pipe type is more suitable.In this paper,the finite element method was used to establish two pipeline calculation models for finite element analysis.The dis-placement and stress of the inverted siphon ground steel-lined reinforced concrete pipe and the open steel pipe under the action of fault creep deformation,stick-slip deformation and earthquake were compared and analyzed.The research results show that:①The steel-lined reinforced concrete pipe and the open steel pipe pipeline can better adapt to the fault creep deformation after ar-ranging multiple bellows expansion joints.②The deformations of the bellows expansion joints of the two pipeline structures loca-ted in the main fault are more than 100 mm under the action of fault stick-slip deformation,so it is difficult to design.③Under the action of earthquake,although the displacement of steel lined reinforced concrete pipe in the main fault range is large,the stress caused by the earthquake is small,and the stress of the steel pipe at the fixed bearing is obviously deteriorated.④Based on the calculation results of various working conditions,the stress of steel lined reinforced concrete pipe is better than that of exposed steel pipe.However the exposed steel pipe has better condition of maintenance and reset during operation.The two pipeline schemes have their own advantages and disadvantages,so the pipeline structure should be reasonably selected according to the specific needs of projects.关键词
活断层/断层错动/倒虹吸/钢衬钢筋混凝土管/明钢管/波纹管伸缩节/滇中引水工程Key words
active fault/fault dislocation/inverted siphon/steel lined reinforced concrete pipe/open steel pipe/bellows expan-sion joint/Dianzhong water Diversion Project分类
建筑与水利引用本文复制引用
李端正,李玉峰,白锐,陈俊涛..过活断层倒虹吸地面压力管结构型式比较研究[J].人民长江,2024,55(2):171-178,210,9.基金项目
云南省重大科技专项计划项目"西南复杂地质条件下特大型引调水工程安全建设与高效运行关键技术研究"(202102AF080001) （202102AF080001）
