挤扩支盘桩与普通桩抗拔承载力对比试验研究

Study on static load test comparision of squeezed branch and plate pile and straight pile

在人防工程中,采用桩基础是常用的抗浮措施之一.挤扩支盘桩在抗拔方面具有优良的性能,近年来在地下工程中得到较为广泛的应用.根据某人防工程挤扩支盘桩和普通桩的单桩抗拔静载荷试验结果,以两种桩型的Q-s曲线和Q-Δs曲线为基础,分析了在特定土层中挤扩支盘桩的局限性,并根据两种桩抗拔承载力经验公式计算结果与实测结果的差距,提出了其承载力计算公式的修正建议.

Pile foundation is one of the most popular measures used to resist the lift load in civil defense engineering. The squeezed branch and plate pile has very excellent properties in anti - pulling, and is widely used in undergroung engineering in recent years. The static load anti - pulling tests of squeezed branch and plate pile and straight pile are studied in this paper. Based on the test results of Q - s curves and Q - △s curves, the application limitation of the rotated plate pile in specific soil is studied. According to the calculated results and test results of the anti - pulling bearing capatity, some suggestions are proposed.