折减荷载法分析刚性桩复合地基路基绕流滑动稳定性
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摘要
针对整体滑动稳定安全系数满足规范要求的刚性桩复合地基路基仍然可能滑塌的事实,对刚性桩复合地基路基绕流滑动稳定分析开展了研究。基于对桩土作用力的研究,对桩土作用力进行了简化处理,提出了折减荷载法用于刚性桩复合地基绕流滑动稳定分析。工程实例表明刚性桩复合地基路基需要分析绕流滑动稳定性,折减荷载法简单实用。
The stability analysis of flow-slide of embankment on rigid-piles composite foundation was studied because the embankment might slide even if their safety factors of overall stability met the requirements of codes.A load reduction method for the stability analysis of flow-slide of embankment on rigid-piles composite foundation was proposed on the basis of analysis and simplified forces between piles and soil.It was proven that the stability analysis of flow-slide should be taken into account for embankment on rigid-piles composite foundation and the load reduction method is simple and practical.
The stability analysis of flow-slide of embankment on rigid-piles composite foundation was studied because the embankment might slide even if their safety factors of overall stability met the requirements of codes.A load reduction method for the stability analysis of flow-slide of embankment on rigid-piles composite foundation was proposed on the basis of analysis and simplified forces between piles and soil.It was proven that the stability analysis of flow-slide should be taken into account for embankment on rigid-piles composite foundation and the load reduction method is simple and practical.
引文
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[8]刘吉福.路堤下复合地基“三等沉区模型”[J].岩土力学,2009,28(S1):798-802.
[9]王新泉,陈永辉,刘汉龙.Y型沉管灌注桩荷载传递机制的现场试验研究[J].岩石力学与工程学报,2008,27(3):615-622.
[10]杭红星.路桥过渡段沉降特性离心模型试验研究[D].成都:西南交通大学道路与铁道工程系,2011:63-66.
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[12]宋兵,蔡健.桩土临界位移的研究[J].广西大学学报:自然科学版,2010,35(4):655-660.
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[15]徐立新.桩承式加筋路堤的设计计算方法研究[D].杭州:浙江大学建筑工程学院,2007.