上硬下软双层地基上条形基础穿刺深度研究

张其一,王青华,王琦

铁道工程学报 ›› 2011, Vol. 28 ›› Issue (11) : 36-39.

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铁道工程学报 ›› 2011, Vol. 28 ›› Issue (11) : 36-39.
路网研究

上硬下软双层地基上条形基础穿刺深度研究

  • 张其一1,王青华2,王琦1
作者信息 +

Study on Punch through Depth of Two - layered Soil Foundation under Strip Footing

  • ZHANG Qi - yi1,WANG Qing - hua2,WANG Qi1
Author information +
文章历史 +

摘要

研究目的:为了对上硬下软双层地基土体穿刺深度进行研究,本文采用非线性有限元软件ABAQUS,基于土体弹塑性破坏理论与ABAQUS 二次开发技术,比较完善地分析了上部土层穿刺深度的影响因素,并给出了穿刺深度计算公式。
研究结论:研究结果表明,穿刺深度与上部土层厚度呈非线性关系,同时受土体弹性模量、非均匀性、基底摩擦等因素的影响; 上下土层强度比对上部土层穿刺深度影响较小。

Abstract

Research purposes: To study the punch through deepth of two - layered soil foundation with hard over soft,the nonlinear finite element analysis software ABAQUS is adopted. Based on the elastic - plastic failure theory and secondary development of ABAQUS,the influence factors of punch through depth are analyzed in detail,and the formula of punch through depth is achieved.
Research conclusions: The results shows that the punch through depth is a founction of thickness of upper layer soil,which can be affected by elastic modulus,nonhomogeneous and friction of footing. The strength ration of soil can affect the ultimate bearing capacity of two - layered soil foundation greatly,but not the punch through depth.

关键词

双层地基 / 穿刺深度 / ABAQUS / 二次开发

Key words

two - layered soil foundation / punch through depth / ABAQUS / secondary development

引用本文

导出引用
张其一, 王青华, 王琦. 上硬下软双层地基上条形基础穿刺深度研究[J]. 铁道工程学报, 2011, 28(11): 36-39
ZHANG Qi - yi, WANG Qing - hua, WANG Qi. Study on Punch through Depth of Two - layered Soil Foundation under Strip Footing[J]. Journal of Railway Engineering Society, 2011, 28(11): 36-39
中图分类号: TU 470   

参考文献

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基金

国家自然科学基金( 50909050) ; 山东省自然科学基金( ZR2009FQ004)

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