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Estimating the effects of tunnelling on existing jointed pipelines based on Winkler model

机译：基于Winkler模型估算隧道对现有连接管道的影响

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摘要

Tunnelling induced ground movement may affect adjacent jointed pipelines. Leakage may occur at the joints due to excessive rotation. As Winkler models are popular in practical design, a Winkler solution based on an improved Winkler modulus is proposed to analyze the response of jointed pipelines due to tunnelling. The solution is verified against the reported elastic continuum solution, the data from field measurement and centrifuge tests. The results of parametric studies establish the variation between joint rotation and general pipe-soil relative stiffness due to Greenfield deformations, joint and pipe segment stiffness and configurations of joints relative to tunnel center. In terms of the parametric studies, a design chart is established to predict the maximum joint rotation based on the improved Winkler modulus as a tool for preliminary risk assessment. The applicability is verified by compared with the results from the field case and centrifuge tests.
机译：隧道引起的地面运动可能会影响相邻的连接管道。过度旋转可能会导致接头泄漏。由于Winkler模型在实际设计中很受欢迎，因此提出了一种基于改进的Winkler模量的Winkler解决方案，以分析隧道引起的连接管道的响应。对照报告的弹性连续体溶液，现场测量和离心测试数据验证溶液。参数研究的结果确定了接头旋转和一般管土相对刚度之间的变化，这归因于格林菲尔德变形，接头和管段刚度以及接头相对于隧道中心的构造。在参数研究方面，基于改进的Winkler模量作为初步风险评估的工具，建立了设计图以预测最大关节旋转。通过与现场案例和离心测试的结果进行比较，验证了其适用性。

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