坡间路基挡土墙稳定性评价数值模拟及建设方案确定.pdf

文档介绍：第 24 卷增 2 岩石力学与工程学报
2005 年 11 月 Chinese Journal of Rock Mechanics and Engineering Nov.,2005



坡间路基挡土墙稳定性评价数值模拟
及建设方案确定

吴顺川,金爱兵,王金安
(北京科技大学土木与环境工程学院,北京 100083)

摘要:坡间路基挡土墙一般建设在半填半挖路段,近年来相继发生了多次不同规模的坡间路基挡土墙失稳灾害,
结合栖莱高速公路 K59+470~K59+630 半填半挖段路基建设问题,为将不安全因素消除在萌芽状态,在对坡间挡
土墙失稳原因分析的基础上,采用快速拉格朗日数值模拟方法,对产生坡间挡土墙失稳的主要因素——边坡角及
车辆动荷载进行全面探讨,提出坡间挡土墙“双锚”建设方案,并根据分析结果确定具体的工程措施及主要技术
参数,“双锚”建设方案实施后监测结果表明,边坡及挡土墙处于完全稳定状态,因此,该技术方案对于类似坡间
挡土墙建设具有广泛的推广和应用价值。
关键词:岩土工程;坡间挡土墙;边坡稳定性;边坡角;车辆动荷载;数值模拟;建设方案
中图分类号:TU 43 文献标识码:A 文章编号:1000–6915(2005)增 2–5382–07

NUMERICAL SIMULATION OF STABILITY ASSESSMENT AND
DESIGN-MAKING OF A SUBGRADE RETAINING WALL ON SLOPE

WU Shun-chuan,JIN Ai-bing,WANG Jin-an
(School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China)

Abstract:Usually,the retaining wall on the slope is constructed in the section of the half-filling and
half-excavating subgrade. Nevertheless many failure cases of this type of retaining wall have been reported in
recent years. Combined with a practical subgrade construction project of retaining wall in one section (K59+470–
K59+630) of Qixia—Laixi expressway of Shandong Province. First,a Lagrange numerical simulation is taken to
analyze two main failure factors(slope angle and dynamic vehicle load) of the retaining wall on th