%0 Journal Article
%T 悬臂式挡土墙抗滑稳定性分析
%A 施小平
%J 南水北调与水利科技
%D 2015
%X 基于强度折减有限元方法, 对悬臂式挡土墙的抗滑稳定性进行了探讨。对比计算表明, 悬臂式挡土墙的结构 特征导致墙后填土内会出现第二滑裂面, 其与坦墙的第二滑裂面有着本质的不同。悬臂式挡土墙的抗滑稳定性随 着墙踵板、墙趾板宽度的增加而增加。当填土面倾斜时, 土体主应力发生偏转, 使挡土墙受到了更多土体的推挤作 用, 从而降低了挡土墙的稳定性。相同凸榫长度时, 凸榫布置在越靠近墙踵板后下方的位置得到的安全系数最大, 而布置在墙趾板前下方的安全系数较小。随着凸榫高度的增加, 挡土结构物的安全系数也增大。实际工程中应尽 量选择重度较小、黏聚力与内摩擦角较大的土体作为填料。  T he shear str eng th r educt ion finite element metho d was used to analy ze the stability of cantilever r etaining wall. Due to the str uctural cha racteristics o f cantilever retaining wall, a second slide sur face can be found in the filling behind the retaining wall, which is essentially different from the seco nd slide surface of the planar r etaining wa ll. The st abilit y of cantilever retaining wall increases with the incr easing width o f heelplate and toe boar d. When the filing sur face is inclined, the pr incipa l str ess de2 flect s and the r et aining wall receives more compression f rom the soil bo dy , w hich can decr ease the stability of the retaining w all. With the same length of t enon, the stability of the retaining w all is the hig hest w hen the teno n is lo cated at the below and back of heelplate, and the low est w hen the tenon is located at the below and back o f toe board. T he stability o f the retaining w all in2 cr eases with the incr easing height o f teno n. In pr act ice, it is sug gested to fill the retaining w all using the soil w ith low weight, high cohesive str eng th, and hig h internal fr ictio n ang le.  国家自然科学基金项目( 41306088)
%K 悬臂式挡土墙
%K 稳定性
%K 滑裂面
%K 有限元
%K cantilever retaining w all
%K stability
%K slide surface
%K f inite element metho d
%U http://www.nsbdqk.net/nsbdyslkj/article/abstract/20150125?st=article_issue