岩土工程学报2024，Vol.46Issue(z2)：124-129,6.DOI:10.11779/CJGE2024S20015
基于随机场理论的盾构隧道地层扰动分析
Stratum disturbance induced by shield tunnels based on random field theory
摘要
Abstract
The shield tunnel will inevitably cause the disturbance of the surrounding stratum and lead to the deformation of the surface and deep strata.Too large deformation of the surface and strata will threaten the safety of the surrounding construction.Therefore,it is necessary to carry out the studies on the disturbance of the surface and strata in tunnel construction.Firstly,under homogeneous soil conditions,two-dimensional numerical calculation is conducted,and the goodnesses of fit of the Peck's formula and polynomials are used to evaluate the degree of deformation disturbance of the horizontal and vertical strata,respectively.Then,considering the spatial variability of soil parameters,within the Monte Carlo framework,the random analysis is performed for the influences of shield construction on stratum disturbance.The results show that the goodness of fit of the Peck's formula can well reflect the degree of settlement of the horizontal strata induced by tunnels.The goodness of fit of the polynomials can well reflect the degree of horizontal deformation of the vertical strata affected by the construction.The spatial variability of soil modulus has a great impact on the stratum disturbance induced by the shield tunnel,and the larger modulus will restrain the disturbance induced by the shield tunnel,but on the whole,the greater stratum disturbance will occur when it is closer to the shield tunnel.The results can provide a useful reference for the design and construction of similar projects.关键词
盾构隧道/深部地层/变形扰动/拟合优度/空间变异性/随机场Key words
shield tunnel/deep stratum/deformation and disturbance/goodness of fit/spatial variability/random field分类
建筑与水利引用本文复制引用
易顺,潘家军,王艳丽,景锋,张宇..基于随机场理论的盾构隧道地层扰动分析[J].岩土工程学报,2024,46(z2):124-129,6.基金项目
中央级科研院所基本科研业务费项目(CKSF2023318/YT) （CKSF2023318/YT）
