在复合地基设计中，桩土应力比是指在荷载作用下，桩顶应力和桩间土表面应力之比。桩土应力比是地基优化设计的重要内容与很多因素有关，如桩土的应力应变关系、模量比、桩长、桩端对下卧层的刺入量、应变条件、应力水平，加载持续时间。
CFG桩复合地基桩土应力比的数值分析 关键词：桩土应力比；高速铁路；数值模拟；褥垫层 [gap=647]Key words: Pile-soil stress ratio; high speed railway; Numerical Simulation; cushion
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④Based on static loading test, pile-soil stress ratio n of composite foundation is calculated and analyzed and it exists in range of variety. It is possible for providing referenced worth for future project.
④通过静载荷试验,对复合地基的桩土应力比n进行了计算和理论分析,得出了桩土应力比n的变化范围,为以后类似工程的设计提供一定的参考价值。
参考来源 - 碎石桩复合地基的试验研究及数值模拟Working mechanism of gravl pile composite foundation under embankment loads is deeply analyzed. The system of embankment-pile-soil is simplified properly;the calculation model of pile-soil stress ratio is established;and the solving process of key parameters is given.
深入分析了路堤等柔性荷载作用下碎石桩复合地基的工作机理,对路堤-碎石桩-桩间土系统进行合理简化,建立了桩土应力比计算模型,并给出关键参数的求解过程。
参考来源 - 路堤荷载作用下碎石桩复合地基桩土应力比计算及试验研究Then a study on the factors affecting pile-soil stressratio of composite foundation has been done.
对桩土应力比的影响因素进行了数值分析。
参考来源 - 京沪高速铁路济南西客站站场路基荷载下复合地基桩土应力特性分析The reinforced cushion can increase the value of stress ratio of pile to soil inside composite foundation.
加筋垫层提高了复合地基中的桩土应力比。
参考来源 - 期刊学术社区·2,447,543篇论文数据，部分数据来源于NoteExpress
碎石桩；复合地基；静载荷实验；桩土应力比。
Gravel pile; Composite foundation; Static load test; Pile-soil stress ratio.
碎石桩；复合地基；静载荷试验；桩土应力比。
讨论了桩土应力比与置换率及桩周土变形模量的关系。
Relationships between the pile-soil stress ratio, the replacement ratio, and the pile lateral soil modulus of deformation are discussed.
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