Tunnelling-induced settlement damage to masonry structures: Centrifuge testing and computational modelling

隧道开挖引起的砌体结构沉降损坏：离心机测试和计算建模

• 批准号: EP/K018221/1
• 负责人: Matthew DeJong
• 金额: $ 43.78万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FK018221%2F1
• 关键词: Tunnelling; induced; settlement; damage; masonry

In the United Kingdom, and throughout the world, tunnelling in urban environments is essential to provide necessary infrastructure. Further, major infrastructure projects, many of which will require tunnelling, will be likely to increase with continued urbanization. However, tunnelling can place buildings at risk. Therefore, reliable assessment tools to predict tunnelling-induced damage are essential to determine whether protective measures are necessary. Useful models exist for predicting tunnelling-induced damage, but these methods need refinement, making use of new and existing data and increasing computational resources. The primary aim of this proposal is to obtain the necessary experimental data to improve analytical and computational methods of predicting tunnelling-induced settlement damage. Specifically, this will be achieved through three primary steps. First, centrifuge testing, in which small scale models can be used to investigate full scale structures, will be used to evaluate the interaction of the soil and the structure during the tunnelling process. In particular, realistic scale models will be 3D printed and the tunnelling process directly simulated. Second, these physical tests will be simulated computationally, to evaluate and improve computational methods. Third, additional simulations will allow extension of experimental results to a wide range of tunnelling scenarios.The experimental and computational results will be directly used to create improved analytical and computational guidelines for predicting tunnelling-induced settlement damage. These guidelines will be evaluated with respect to existing field data. It is envisioned that these results will have an immediate impact on the tunnelling industry in the UK and around the world.

在英国和世界范围内，城市环境中的隧道对于提供必要的基础设施至关重要。此外，随着城市化的持续，主要的基础设施项目（其中许多都需要隧道）可能会增加。但是，隧道可能会使建筑物处于危险之中。因此，可靠的评估工具预测隧道引起的损害对于确定是否需要保护措施至关重要。存在用于预测隧道引起的损害的有用模型，但是这些方法需要改进，利用新数据和现有数据并增加计算资源。该建议的主要目的是获得必要的实验数据，以改善预测隧道引起的沉降损害的分析和计算方法。具体而言，这将通过三个主要步骤来实现。首先，可以使用小规模模型来研究全尺度结构的离心机测试，将用于评估土壤和结构在隧道过程中的相互作用。特别是，现实的规模模型将是3D打印，并直接模拟隧道过程。其次，这些物理测试将在计算中进行模拟，以评估和改善计算方法。第三，其他模拟将允许将实验结果扩展到广泛的隧道场景。实验和计算结果将直接用于创建改进的分析和计算指南，以预测隧道诱导的沉降损害。这些准则将在现有现场数据方面进行评估。可以预见，这些结果将对英国和世界各地的隧道行业产生直接影响。

项目成果

Impact of the Crossrail tunnelling project on masonry buildings with shallow foundations

Crossrail隧道工程对浅基础砌体建筑的影响

• DOI: 10.1680/jgeen.18.00178
• 发表时间: 2019
• 期刊: Proceedings of the Institution of Civil Engineers - Geotechnical Engineering
• 作者: DeJong M

A comparison of current analytical methods for predicting soil-structure interaction due to tunnelling

• DOI: 10.1016/j.tust.2018.04.013
• 发表时间: 2018-09
• 期刊: Tunnelling and Underground Space Technology
• 影响因子: 6.9
• 作者: G. Giardina;M. DeJong;Benjamin J. Chalmers;Bryan R. Ormond;R. Mair

Masonry response to tunnelling: A sensitivity study on the effect of cracking and building weight

砖石对隧道的响应：裂缝和建筑重量影响的敏感性研究

• 发表时间: 2014
• 作者: Giardina G

Interaction between surface structures and tunnelling in sand: Centrifuge and computational modelling

• DOI: 10.1016/j.tust.2015.07.016
• 发表时间: 2015-07
• 期刊: Tunnelling and Underground Space Technology
• 影响因子: 6.9
• 作者: G. Giardina;M. DeJong;R. Mair

Modelling the 3D brittle response of masonry buildings to tunnelling

模拟砖石建筑对隧道的 3D 脆性响应

• 发表时间: 2016
• 作者: Giardina, G