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CFG桩处理山区公路软基的主要影响因素分析

DOI: 10.3969/j.issn.1674-0696.2015.02.08, PP. 33-38

Keywords: 道路工程,软土地基,CFG桩复合地基,沉降量,路堤荷载,有限元分析,roadengineering,softsoilfoundation,CFGpilecompositefoundation,settlement,embankmentload,finiteelementanalysis

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Abstract:

:？CFG桩处理山区公路后，其复合地基承载力、沉降量受较多因素影响。在路堤荷载作用下，常规理论方法难以分析其影响因素变化时应力应变规律。主要利用有限元软件PLAXIS对山区高速公路CFG桩复合地基处理及路堤填筑施工进行模拟，通过对CFG桩桩长、桩间距以及复合地基褥垫层厚度这3个影响因素的变化进行对比分析，总结出各影响因素对CFG桩复合地基沉降量的影响规律，分析得出复合地基中CFG桩桩长、桩间距及褥垫层厚度的合理取值范围。最终为实际工程中CFG桩复合地基的优化设计提供理论依据。

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