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首页> 外文会议>Geotechnique symposium in print on stiff and sedimentary clays >Pore water pressure and horizontal stress changes measured during construction of a contiguous bored pile multi-propped retaining wall in Lower Cretaceous clays
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Pore water pressure and horizontal stress changes measured during construction of a contiguous bored pile multi-propped retaining wall in Lower Cretaceous clays

机译：在下白垩统粘土中施工连续钻孔桩多支撑壁时测量的孔隙水压和水平应力变化

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The design and construction of a contiguous bored pile propped retained cut on the approaches to Ashford International Station raised some challenging design issues. Design problems associated with under-drainage and groundwater control (including the performance of semi-permeable propped retaining walls) and the effects of wall installation and movement on in situ stresses were compounded by the relatively limited geotechnical engineering experience of the Atherfield and Weald Clay formations. Differences in the permeabilities of these two strata were expected, but the impact of these on the design was only fully established at the start of construction. Some aspects of the engineering behaviour of the Atherfield and Weald Clays are discussed with reference to an instrumented section of the propped retained cut. The changes in total horizontal stress and pore water pressures measured during and over a six-year period following construction of the retained cut are presented, and their significance is discussed.
机译：连续钻孔桩的设计和施工支撑在阿什福德国际站点的方法中保留了一些挑战性的设计问题。与排水沟和地下水控制相关的设计问题（包括半透明支撑挡土墙的性能）和壁挂装置的效果通过Atherfield和WeaLD粘土形成的相对限制的岩土工程经验进行了复杂的岩土工程经验。预期这两个层的渗透率的差异，但这些对设计的影响仅在建设开始时完全建立。参考所提预留切割的仪器部分讨论了Atherfield和WeaLD粘土的工程行为的一些方面。介绍了在留下保留切割后和超过六年期间测量的总水平应力和孔隙水压力的变化，并讨论了它们的意义。

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