北京交通大学学报2017，Vol.41Issue(4)：55-61,7.DOI:10.11860/j.issn.1673-0291.2017.04.008
穿越走滑断层埋地管道应变特性的试验研究
Experimental research on strain properties of buried pipelines at strike-slip fault crossings
摘要
Abstract
Buried pipelines at strike-slip fault crossing would be buckling,rupture and engender other damages under the action of external forces such as earthquake.It is very important for the design and protection of pipe engineering to study strain properties of buried pipelines subjected to strike-slip faults.Stresses of buried pipelines crossing strike-slip faults are simulated by the aid of the early designed experimental apparatus for combined ground deformation,and strain distribution and change of soil pressure around pipeline are measured.Also,effects of diameters of pipeline on axial strain and soil pressure around pipelines are analyzed,and the deformation region of pipelines are obtained.The test results indicate that pipelines near fault plane are subjected to axial tension or compression during faults slipping along the fault plane,and their deformations are approximately centrally symmetrical along intersection point of the fault planes and pipelines.The pipelines far from fault move with soil so that they are not deformed,thus,the deformations of pipelines occur in a certain region near the fault.The larger diameter of a pipeline is,the smaller deformation region affected by fault is.Soil pressure around the pipelines and the axial strain of pipelines near the fault increase with the increase of the displacement of fault slipping.Furthermore,axial strain of pipelines and soil pressure around pipelines decrease with the increase of the pipeline diameter.关键词
管线工程/走滑断层/埋地管道/应变/土压力/断层错距/试验Key words
pipeline engineering/strike-slip fault/buried pipeline/strain/soil pressure/distance of fault dislocation/test分类
天文与地球科学引用本文复制引用
陈艳华,刘晓,王乐,葛楠,陈海彬,刘琳琳..穿越走滑断层埋地管道应变特性的试验研究[J].北京交通大学学报,2017,41(4):55-61,7.基金项目
国家自然科学基金(51378172) （51378172）
河北省自然科学基金(E2014209089)National Natural Science Foundation of China(51378172) （E2014209089）
Natural Science Foundation of Hebei Province(E2014209089) （E2014209089）
