岩土工程学报2024，Vol.46Issue(10)：2129-2137,9.DOI:10.11779/CJGE20230688
考虑界面脱空和土体屈服的盾构下穿管线响应计算
Estimation of pipeline responses induced by shield tunnelling considering gap formation and soil yielding
摘要
Abstract
The extensive tests confirm gap formation and soil yielding at the pipe-soil interface during shield tunnelling.By incorporating the tension-free Winkler foundation model and the theory of pull-out and compressive bearing capacity of pipeline,the criteria for gap formation and soil yielding are introduced into the pipe-soil linear elastic interaction theory.A method for calculating the nonlinear pipe-soil interaction,accounting for gap formation and soil yielding,is derived and validated against the model tests.The parametric studies reveal that interface gap gets wider with the increasing flexural stiffness of pipeline.The pipeline response exhibits nonlinear changes as an increase in the volume loss due to pipe-soil separation and subgrade yielding.When the interface gap and yielding range are large in width,it significantly affects the pipeline response.Ignoring this effect may lead to overly conservative calculations of deflection and bending moments of pipeline.关键词
盾构隧道开挖/管土相互作用/界面脱空/土体屈服/无拉力Winkler地基Key words
shield tunnelling/pipe-soil interaction/gap formation/soil yielding/tension-free Winkler foundation分类
建筑与水利引用本文复制引用
林存刚,王忠杰,赵辰洋,陈瑜,梁禹,黄林冲,丁智..考虑界面脱空和土体屈服的盾构下穿管线响应计算[J].岩土工程学报,2024,46(10):2129-2137,9.基金项目
广东省基础与应用基础研究基金项目(2023A1515030243,2023A1515011634) （2023A1515030243,2023A1515011634）
珠海市基础与应用基础课题研究项目(ZH22017003210005PWC) （ZH22017003210005PWC）
广东省"珠江人才计划"引进创新创业团队项目(2021ZT09G087) （2021ZT09G087）
国家自然科学基金面上项目(52174101,52208380) （52174101,52208380）
浙江省城市盾构隧道安全建造与智能养护重点实验室开放基金项目(ZUCC-UST-22-03) （ZUCC-UST-22-03）
