倾斜基岩对地基上柔性条形基础沉降的影响

刘晓曦,王旭,刘国忠

铁道工程学报 ›› 2008, Vol. 25 ›› Issue (5) : 1-4.

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PDF(372 KB)
铁道工程学报 ›› 2008, Vol. 25 ›› Issue (5) : 1-4.
路网研究

倾斜基岩对地基上柔性条形基础沉降的影响

  • 刘晓曦,王旭,刘国忠
作者信息 +

Influence of Tilted Foundation Rock on the Subsidence of Flexible Strip Foundation

  • LIU Xiao-Xi, WANG Xu, LIU Gou-zhong
Author information +
文章历史 +

摘要

研究目的:研究倾斜基岩上柔性条形基础总沉降和不均匀沉降的计算方法,减少地基不均匀沉降。
研究结论:(1)沿着地基表面,基岩倾斜对地基总沉降的影响随之变化,对地基中心处的影响最小;当基 岩倾角小于45°时,不均匀沉降受倾斜基岩的影响非常显著;(2)在倾斜基岩影响下的沉降影响系数和不均 匀沉降影响系数的建议值,可用于路堤等柔性浅条形基础的沉降计算,也可供下部存在基岩的竖向条形荷载 下可压缩土体的沉降计算;(3)由于倾斜基岩的普遍存在,为了避免因忽视倾斜基岩引起的地基不均匀沉降, 而造成柔性基础设计上的失误,应加强这方面的研究。

Abstract

Research purposes: The researches are done on the computing methods of the total subsidence volume and uneven subsidence volume of flexible strip foundation on tilted foundation for the purpose of reducing uneven subsidence.
Research conclusions: (1)The influence of tilted foundation rock on the subsidence of flexible strip foundation changes with the change of ground surface, the influence on central area of the foundation is the smallest. When the gradient of foundation rock is leas than 450,the influence on uneven subsidence by tilted foundation rock is notable.(2)The proposed values of subsidence influencing coefficient and uneven subsidence influencing coefficient under effects of tilted foundation rock can be used for calculation of the subsidence of flexible strip foundation for embankment and it also can be used for calculation of subsidence of the compacted soil on the bottom under vertical strip load of foundation rock. ( 3 ) The research on this field should be strengthened for keeping mistaken design of flexible foundation away because of neglecting the uneven subsidence of foundation caused by tilted foundation rock.

关键词

道路工程 / 柔性条形基础 / 倾斜基岩 / 沉降影响系数

Key words

highway engineering / flexible strip foundation / tilted foundation rock / subsidence influencing coefficient

引用本文

导出引用
刘晓曦, 王旭, 刘国忠. 倾斜基岩对地基上柔性条形基础沉降的影响[J]. 铁道工程学报, 2008, 25(5): 1-4
LIU Xiao-Xi, WANG Xu, LIU Gou-zhong. Influence of Tilted Foundation Rock on the Subsidence of Flexible Strip Foundation[J]. Journal of Railway Engineering Society, 2008, 25(5): 1-4
中图分类号: U416.1   

参考文献

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