Evaluation of the shear stiffness and load redistribution of framed structures affected by tunnelling

IF 5.3 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Geotechnics Pub Date : 2024-11-13 DOI:10.1016/j.compgeo.2024.106899

Jingmin Xu , Zehui Yu , Rui Chen , Tao Xu , Churong Chen , Ziqi Wang

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引用次数: 0

Abstract

This technical note examines the shear distortion of plane strain framed structures resulting from tunnelling-induced surface differential settlements. An equation for calculating the shear stiffness is derived, considering various structural parameters. The effectiveness of the proposed method is validated through both experimental and finite element modeling results, with its accuracy emphasized by comparison with existing methods. Additionally, a method for estimating the redistribution of pressure beneath the foundation of plane strain framed buildings due to tunnelling is proposed and validated through numerical simulations which adopt an advanced soil constitutive model. The parametric study further demonstrates the applicability of the proposed methods for estimating shear stiffness in three-dimensional structures characterized by similar vertical wall and horizontal slab stiffness. The research findings provide tunnelling engineers with a tool for the rapid estimation of shear stiffness in framed structures and a reliable evaluation of pressure redistribution beneath foundations caused by tunnelling.

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评估受隧道工程影响的框架结构的剪切刚度和荷载重新分布情况

本技术说明探讨了隧洞引起的表面差异沉降对平面应变框架结构造成的剪切变形。考虑到各种结构参数，得出了剪切刚度计算公式。通过实验和有限元建模结果验证了所提方法的有效性，并通过与现有方法的比较强调了其准确性。此外，还提出了一种估算平面应变框架建筑地基下因隧道开挖而产生的压力重新分布的方法，并通过采用先进土壤构成模型的数值模拟进行了验证。参数研究进一步证明了所提出的方法适用于估算垂直墙和水平板刚度相似的三维结构的剪切刚度。研究成果为隧道工程师提供了一种工具，用于快速估算框架结构的剪切刚度，并对隧道开挖造成的地基下压力重新分布进行可靠评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computers and Geotechnics 地学-地球科学综合

CiteScore

9.10

自引率

15.10%

发文量

438

审稿时长

45 days

期刊介绍： The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.