Lateral response of piles in weak calcareous sandstone
Lateral response of piles in weak calcareous sandstone
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DOI：
10.1139/cgj-2015-0600
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发表时间：
2016-05
影响因子：
3.6
通讯作者：
Fengju Guo;B. Lehane
中科院分区：
文献类型：
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作者：
Fengju Guo;B. Lehane
现有的软岩中横向受荷桩的设计方法缺乏足够的支护实例数据，因此不能被视为具有高水平的可靠性。本文通过介绍四个钻孔灌注桩在软弱钙质砂岩中的横向载荷试验结果，说明了试验数据的不足。推导出的横向荷载传递（p-y）曲线与现有的方法进行了比较，为软弱岩石和水泥土。然后，本文探讨了潜在的使用锥贯入试验（CPT）的数据直接用于设计分析的横向承载桩在软弱岩石。结果表明，试验场地的岩石等效弹性模量qc控制值与桩侧反应控制值非常相似。这一发现是用来制定一个简单的双线性p-y近似的横向响应，需要qc数据和岩石的有效应力强度参数的估计。结果表明，这种...
Existing design methods for laterally loaded piles in soft rock have insufficient supporting case history data and consequently cannot be regarded as having a high level of reliability. This paper addresses the shortage of experimental data by describing the results from four instrumented lateral load tests on drilled and grouted piles installed in weak calcareous sandstone. The derived lateral load transfer (p–y) curves are first compared with existing approaches for weak rock and cemented soils. The paper then examines the potential of using cone penetration test (CPT) data directly for the design analysis of laterally loaded piles in weak rock. It is shown that equivalent elastic moduli of the rock controlling values of qc at the test site are very similar to those controlling lateral pile response. This finding is used to formulate a simple bilinear p–y approximation of the lateral response that requires qc data and an estimate of the rock’s effective stress strength parameters. It is shown that such ...