Design Methodology for Axially Loaded Auger Cast-in-Place and Drilled Displacement Piles
Design Methodology for Axially Loaded Auger Cast-in-Place and Drilled Displacement Piles
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DOI：
10.1061/(asce)gt.1943-5606.0000727
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发表时间：
2012-12
影响因子：
3.9
通讯作者：
Sungwon Park;Lance A. Roberts;A. Misra
中科院分区：
文献类型：
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作者：
Sungwon Park;Lance A. Roberts;A. Misra
随着螺旋钻孔灌注桩和钻孔灌注桩在新的工程中的应用越来越多，在用可靠度设计方法评价桩的性能时，引入适当的设计参数是很重要的。虽然螺旋桩可以通过施工期间在桩附近产生的有效应力变化的大小与钻孔桩（包括钻孔桩）和打入桩区分开来，但螺旋桩的当前设计方法通常使用与钻孔桩或打入桩相同的设计方法。为了提高螺旋桩的效率，必须发展一种独特的设计方法。本文主要研究了采用t-z法在以桑迪为主的土壤中进行螺旋推桩的设计方法。为了确定螺旋钻孔灌注桩的设计参数，利用静载荷试验数据进行了t-z参数的反算。本文介绍了17个螺旋钻孔灌注桩静载试验的资料。
AbstractWith the increasing use of augered cast-in-place and drilled displacement piles in new construction, it is important that proper design parameters be incorporated when evaluating pile performance using reliability-based design methods. Although augered piles can be distinguished from bored piles, including drilled shafts, and driven piles by the magnitude of the effective stress changes they produce in the vicinity of the pile during construction, the current design methods for augered piles generally use the same design methods as those used for bored or driven piles. To enhance the efficiency of the augered piles, a unique design method must be developed. This paper focuses on developing a design methodology for axially loaded augered piles installed in predominately sandy soils using the t-z method. To develop the design parameters for augered piles, back-calculation of the t-z parameters was conducted using static load–test data. The data from 17 static pile load tests conducted on augered pil...