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首页> 外文会议>Proceedings of the 2nd international symposium on Asia urban geoengineering >Calibrating Resistance Factor and Factor of Safety of Driven Piles Considering Set-up Effects
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Calibrating Resistance Factor and Factor of Safety of Driven Piles Considering Set-up Effects

机译：考虑设置效应的打桩阻力系数和安全系数的标定

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The ultimate bearing capacity of the driven piles is mainly composed of the ultimate shaft resistance and the ultimate base resistance. The frequent appearance of the set-up effects of the driven piles will be conductive to the improvement of the ultimate shaft resistance after pile driving. The fundamental purpose of this paper is to study the influence of the set-up effects on the design resistance factor and the factor of safety (FS) of the driven piles based on the load and resistance factor design (LRFD) criteria. The set-up effects factor (α) and the ratio (ε) of the initial ultimate shaft resistance to the initial ultimate bearing capacity are used to calibrate the formulas for estimating the resistance factor and FS of the driven piles. Meanwhile, the influence of the factor a and the ratio ε on the design resistance factor and FS of the driven piles are studied. Analysis indicates that the smaller design resistance factor will be determined for the driven piles with the stronger set-up effects, and so it is for the larger ε. And the smaller FS will be estimated for the driven piles with the stronger set-up effects, and so it is for the larger ε. However, analysis also demonstrates that the design resistance factor and the estimation FS are nearly not influenced by the factor α and the ratio ε. when they are larger than the certain values.
机译：打入桩的极限承载力主要由极限轴阻力和极限基础阻力组成。经常出现打入桩的安装效果，将有助于打桩后极限轴阻力的提高。本文的基本目的是基于荷载和阻力系数设计（LRFD）标准研究设置效应对打入桩的设计阻力系数和安全系数（FS）的影响。建立效应因子（α）和初始极限轴阻力与初始极限承载力之比（ε）用于校准公式，以估算打入桩的阻力因子和FS。同时，研究了系数α和比率ε对打入桩的设计阻力系数和FS的影响。分析表明，对于设置效果更强的打入桩，将确定较小的设计阻力系数，而对于较大的ε，则确定为较小。对于设置效果更强的打桩，将估算出较小的FS，因此对于较大的ε也是如此。但是，分析还表明，设计阻力因子和估计FS几乎不受因子α和比率ε的影响。当它们大于特定值时。

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