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Influence of Construction History in Excavation

机译：施工历史对开挖的影响

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摘要

Model tests and elastoplastic finite element analyses for excavation problems such as earth retaining and tunneling are performed to investigate the influence of construction history on the settlements and earth pressures. Results of two-dimensional tests on earth retaining wall show that the surface settlements and the distribution of earth pressures on the wall depend on the deflection process of the wall even though the final wall deflections are the same. Analytical results, in which stress-strain behavior of soil is properly taken into consideration, predict well the experimental results. Furthermore, three-dimensional (3D) analysis for tunneling shows that predicted surface settlements in which the construction procedure is taken into account are much different from those without consideration of construction procedure. These analytical results lead to that 3D analysis is necessary for the problems like tunneling whose construction procedure is not two-dimensional even though it may look like a plane strain (2D) problem at the completion stage.
机译：进行了模型测试和弹塑性有限元分析，以研究诸如土保留和隧洞等开挖问题，以研究施工历史对沉降和土压力的影响。挡土墙的二维测试结果表明，即使最终的墙体挠度相同，墙体的表面沉降和土压力的分布也取决于墙体的挠度过程。适当考虑土壤的应力-应变特性的分析结果可以很好地预测实验结果。此外，隧道的三维（3D）分析表明，考虑到施工步骤的预测地表沉降与未考虑施工步骤的地表沉降有很大不同。这些分析结果导致3D分析对于诸如隧道的问题是必要的，尽管在完成阶段看起来像平面应变（2D）问题，但其施工过程不是二维的。

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  • 来源
  • 会议地点 Beijing(CN);Beijing(CN)
  • 作者

    Nakai T.; Xu L.M.; Kawano H.; Hashimoto T.;

  • 作者单位

    Nagoya Institute of Technology, Nagoya, Japan;

    Nagoya Institute of Technology, Nagoya, Japan;

    Nagoya Institute of Technology, Nagoya, Japan;

    Osaka Geo-Research Institute, Osaka, Japan;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TU4v4;
  • 关键词

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