公路工程填方路基承载特性研究
Study on Load Bearing Characteristics of Subgrade Filled in Highway Engineering
李庆斌1
作者信息
- 1. 宁夏公路勘察设计院有限责任公司,宁夏 银川 750004
- 折叠
摘要
为提升公路工程填方路基承载特性,文中利用室内缩尺模型就土工格室加筋对挡土墙填方路基力学特性的影响进行分析.结果表明,与无筋路基相比,4.5 倍、3 倍、2 倍高度间距下,加筋路基荷载力分别提升32.3%、59.7%、98.1%;4.5 倍、3 倍及2 倍高度间距下的加筋路基最大弯矩分别降低8.5%、16.8%、29.7%.随着土工格室加筋密度的增加,土工格室拉应力不断增加,弯矩有所降低,有效提升了填方路基的承载特性以及抗剪强度.
Abstract
In order to improve the load bearing characteristics of the embankment filled in highway engineering,this paper analyzes the influ-ence of the reinforcement of geocell on the mechanical characteristics of the embankment filled in retaining wall by using the indoor scale mod-el.The results show that,compared with unreinforced subgrade,the load force of reinforced subgrade with 4.5 times height,3 times height and 2 times height spacing increases by 32.3%,59.7%and 98.1%,respectively.The maximum bending moment of the reinforced roadbed with 4.5 times,3 times and 2 times height spacing decreases by 8.5%,16.8%and 29.7%,respectively.With the increase of reinforcement density of geocell,the tensile stress of geocell increases and the bending moment decreases,which effectively improves the bearing characteris-tics and shear strength of the filled roadbed.
关键词
公路工程/填方路基/挡土墙/土工格室加筋/承载性能Key words
Highway engineering/Fill the subgrade/Retaining wall/Geocell reinforcement/Load-carrying performance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