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Sheet pile wall design and performance in peat.

机译:板桩墙设计和泥炭性能。

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摘要

As part of a highway relocation project (RT44) in Carver Massachusetts, long sheet pile walls were installed in Cranbury bogs and ponds in order to mitigate environmental concerns. The subsurface consisting of deep peat deposits challenges the current understanding of the pressures developing on sheet piles and the parameters used for its design. A large instrumentation program has been conducted over a period of 2.5 years, measuring the peat pressure developing along the sheet pile walls during construction and service. This project includes (i) original wall design and associated assumptions, (ii) a detailed field and laboratory study investigating the vertical and lateral properties of the peat, (iii) the instrumentation of the walls using inclinometers and vibrating wire total pressure cells along with a new thin film tactile pressure sensors, (iv) the measurements of the pressures and deflections developing along the wall and independent surveying over various stages of construction including excavation, fill, deep dynamic compaction (DDC) and MSE wall construction, (v) the modeling of the wall-soil interaction during the aforementioned stages using the FEM code PLAXIS, (vi) comparisons between the modeling results and measured values at the different stages, and (vii) the development of recommended parameters for future design of walls in peat.
机译:作为马萨诸塞州卡弗市公路迁移项目(RT44)的一部分,为了缓解环境问题,在克兰伯里的沼泽和池塘中安装了长板桩墙。由深层泥炭沉积物组成的地下层对当前对板桩上形成的压力及其设计所用参数的理解提出了挑战。在2.5年的时间里,进行了一个大型的仪器程序,测量在施工和使用过程中沿板桩墙形成的泥炭压力。该项目包括(i)墙体的原始设计和相关假设,(ii)详细的田间和实验室研究,以研究泥炭的垂直和侧向特性,(iii)使用倾角仪和振动线总压力传感器对墙体进行检测,以及一个新的薄膜触觉压力传感器,(iv)测量沿墙产生的压力和挠度,并在施工的各个阶段进行独立测量,包括开挖,填充,深层动态压实(DDC)和MSE墙的施工,(v)使用FEM代码PLAXIS对上述阶段中的墙-土相互作用进行建模,(vi)在不同阶段的建模结果与测量值之间的比较,以及(vii)为泥炭墙的未来设计开发推荐的参数。

著录项

  • 作者

    Tan, Yong.;

  • 作者单位

    University of Massachusetts Lowell.;

  • 授予单位 University of Massachusetts Lowell.;
  • 学科 Engineering Civil.
  • 学位 D.Eng.
  • 年度 2005
  • 页码 1017 p.
  • 总页数 1017
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;
  • 关键词

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