软土地区的公路路基设计处理方式
Design and Treatment Methods of Highway Subgrade in Soft Soil Areas
吕学仕 1唐文俊 1毛宁2
作者信息
- 1. 中国山东国际经济技术合作有限公司,山东 济南 250014
- 2. 山东建勘集团有限公司,山东 济南 250031
- 折叠
摘要
路基是公路建设的基础,而软土地基广泛分布在河流两岸,给路基建设和公路使用带来了困难.文中研究了在某软土基础上应用水泥粉煤灰碎石桩(CFG)处理的优势,利用有限元法对CFG桩处理的软土地基进行了数值模拟,分析地基处理前后工程指标的变化,进而进行车辆动荷载作用下的动力分析.结果表明,使用CFG桩处理后的软土地基沉降明显减少、不均匀沉降效果明显改善、水平位移减小、路堤的水平位移得到控制,提高了公路路堤的服役性能,保证了其安全性和稳定性.
Abstract
The roadbed is the foundation of highway construction,and soft soil foundation is widely distributed on both sides of rivers,which brings difficulties to roadbed construction and highway use.The article studied the advantages of using cement fly ash gravel piles(CFG)to treat a soft soil foundation.The finite element method was used to numerically simulate the soft soil foundation treated with CFG piles,analyze the changes in engineering indicators before and after foundation treatment,and then conduct dynamic analysis under vehicle dynamic loads.The results show that the settlement of soft soil foundation treated with CFG piles is significantly reduced,the uneven settlement effect is signifi-cantly improved,the horizontal displacement is reduced,and the horizontal displacement of the embankment is controlled,which improves the service performance of the highway embankment and ensures its safety and stability.
关键词
软土路基/有限元法/车辆载荷Key words
Soft soil subgrade/Finite element method/Vehicle load引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据