摘要
目前山区高速公路经常出现多级边坡,传统的全局强度折减法只能求得边坡的最危险滑面,而次级滑动面往往会遗漏。针对该问题,提出一种新的局部强度折减法。该方法将已进入塑性区和未考虑破坏的区域采用弹性材料代替,其他区域土体进行强度折减,直至计算不收敛,可以得出多级边坡的潜在滑动面。通过二级边坡和复杂边坡算例验证了该方法的可行性,且获得的边坡潜在滑面可为工程加固提供建议和参考。
There are a lot of multi-stage slopes existing among the mountainous highways. The traditional global strength reduction method can only get the most dangerous sliding surface, while the secondary slide surfaces are usually missed. To solve this problem, a new local strength reduction method has been proposed, which makes the elastic region instead o~ the plastic zone and the zones not considering destruction, other regions use the real material parameters to be analyzed by strength reduction method until the calculation does not converge, and more potential sliding surfaces can he obtained. The feasibility of this approach is verified through the double-stage slope and the multi-stage slope, and the potential surfaces can indicate the suggestion for the slop reinforcement.
出处
《公路》
北大核心
2016年第12期19-23,共5页
Highway
基金
云南省交通运输厅科技项目
云交科2014(A)01
关键词
多级边坡
局部强度折减法
塑性区
潜在滑面
multi-stage slope
local strength reduction method
plastic zone
potential surfaces
