Employment of the P-Multiplier in Pile-Group Analysis
Employment of the P-Multiplier in Pile-Group Analysis
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DOI：
10.1061/(asce)be.1943-5592.0000196
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发表时间：
2011-09
影响因子：
3.6
通讯作者：
M. Ashour;H. Ardalan
中科院分区：
文献类型：
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作者：
M. Ashour;H. Ardalan
本文讨论了群桩在水平荷载作用下响应的P乘数(Pm)随P-y曲线的变化规律，这是桥梁桩基设计中的一个重要课题。Pm受场地岩土条件(即土壤剖面、类型和性质)、桩前和桩侧间距以及群桩挠度的影响。目前的研究表明，需要将这些因素与推荐的Pm集合结合起来，以避免将Pm视为仅基于桩间距的单一(唯一)值时的任何妥协或不确定性。目前的研究使用应变楔形(SW)模型技术、建议的PM值和从全尺寸群桩载荷试验中收集的数据来处理这些影响因素。试验结果表明，Pm不是唯一的，必须根据场地的岩土条件以及桩排前方和侧面的间距进行评估。由于雇用的PM值必须是这些影响因素的函数，所以附加的全员和...
This paper discusses the variation of the P-multiplier (Pm) used with the p-y curve to assess the response of a pile group under lateral loads, which is a crucial topic for the design of bridge pile foundations. Pm is influenced by the site geotechnical conditions (i.e., soil profile, type and properties), pile front and side spacings, and pile-group deflection. The presented study shows the needs to incorporate these factors with the recommended sets of Pm to avoid any compromise or uncertainty when Pm is treated as a single (unique) value based only on pile spacings. The current study addresses these influential elements using the strain wedge (SW) model technique, suggested Pm values, and data collected from full-scale pile-group load tests. The experimental results show that Pm is not unique and must be assessed based on the site geotechnical conditions along with the pile-row front and side spacings. Because the employed Pm values must be a function of these influential factors, additional full- and ...