摘要
地基在路基荷载下不仅产生竖向沉降,也发生侧向变形,并且侧向变形是路基沉降产生的重要原因之一。为了分析路堤荷载下地基的侧向变形,通过对布辛奈斯克集中力下弹性半无限体的侧向变形解进行积分,分别推导出泊松比等于0.5和小于0.5时,无限长线性荷载、带状均布荷载、带状三角形荷载下侧向变形理论解;在考虑边坡坡度和路基高宽比对地基反力影响的条件下,建立了统一坐标导出与路堤等效带状梯形荷载下侧向变形解。
Embankment load causes not only vertical settlement of foundation but also lateral deformation of foundation,and lateral deformation is one of the important factors for foundation settlement.In order to analyze lateral deformation of foundation under the embankment,based on Boussinesq’s concentrated force lateral deformation solution of the elastic semi-infinite,the lateral deformation theoretical solutions under the infinite line load,strip uniformly distributed load and triangular strip load are derived respectively when Poisson ratio equals to 0 .5 and less than 0 .5 .Then ribbon trapezoidal load’s lateral deformation solution on the uniform coordinate is given with taking the effect of the slope and the width height ratio of the subgrade to the ground reaction into consideration.The method is clear and logical and the final lateral deformation solution is propitious to the calculation of computer programming.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第2期89-97,共9页
Journal of Chongqing University
基金
铁道部科技计划资助项目(2010G003-F)
关键词
地基侧向变形
计算方法
路基荷载
沉降
地基反力
soil lateral deformation
calculation method
embankment load
settlement
ground reaction
