摘要
针对坡积体路段的稳定性进行分析。按照坡积体的形成方式将坡积体分为崩坡积体、残坡积体和冲坡积体,并对这3种坡积体进行了定义。通过分析崩坡积体、残坡积体和冲坡积体的物质组成、力学特性及相关特征,得出坡积体引起的常见路基病害类型。最后采用多因素正交试验与Flac3D有限元数值模拟方法,建立坡积体半填半挖路基下边坡稳定性模型。分析了边坡高度、坡度及土性参数对边坡稳定性的影响,最后得出影响坡积体半填半挖路基下边坡的因素为:填方土体黏聚力C_1>路基高度H>填方土体内摩擦角Φ_1>挖方土体内摩擦角Φ_2>挖方土体黏聚力C_2>填土宽度B。
The stability of the slope product is analyzed. Slope product was divided into the colluvial slope product, the residual slope product and the alluvial slope product as per its formation, which were defined respectively. By analyzing the material composition, mechanical properties and related characteristics of the colluvial slope product, the residual slope product and the alluvial slope product, the types of the common roadbed diseases caused by them were obtained. By using the multi factor orthogonal experiment and Flac3D finite element numerical simulation method, the half filling and half digging roadbed slope stability model was established to analyze the influence of slope height, slope angle and soil parameters on the stability of the slope. Finally, the factors affecting the slope were concluded： filling viscous cohesion C1 〉 subgrade height H 〉 fill soil friction angle Ф1 〉 excavation soil friction angle Ф2 〉 excavation viscous cohesion C2 〉 fills width B.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2016年第4期52-55,69,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
交通运输部科技项目(10710-2012221147)
关键词
道路工程
坡积体
路基病害
边坡稳定性
Flac3D数值模拟
highway engineering
slope product
subgrade diseases
slope stability
Flac3D numerical simulation
作者简介
毛雪松（1976-），女，吉林春晖人，教授，博士，主要从事路基稳定性方面的研究。E—mail：xuesongxian@aliyun．com。
通讯作者：刘龙旗（1989-），男，河南新乡人，硕士研究生，主要从事公路路基及防灾减灾方面的研究。E-mail：136827953@qq．com。
