摘要
路基病害多发,与路基顶部土体围压不足和边坡无侧向约束关系密切,提出一种既能增加围压又能强制约束边坡的预应力路基结构,介绍其构造方法和特点,结合土力学理论和有关研究成果,论证和探讨通过水平预应力提高围压对路基土体的静、动力和变形性能的积极影响,分析预应力钢筋、侧压力板对提高路基边坡稳定性的机理,最后探讨这种新型路基结构在路基工程中的应用前景。
The frequent deterioration of track subgrade is closely associated with deficiency of confining pressure at the top of the subgrade soil and lack of lateral constraint on slopes. A new type of prestressed embankment structure was presented to increase the confining pressure on the embankment soil as well as to apply lateral constraint on slopes. The construction method and characteristics of this new structure were also introduced. Based on soil mechanics theories and related research results, the positive effects of increasing confining pres-sure on static, dynamic and deformation behaviors of embankment soils by applying the horizontal prestressed force were testified. The enhancement effects of increasing the stability of embankment slopes by prestressed reinforcement and side pressure plates were also discussed. The application prospect of this new embankment structure in the subgrade engineering was discussed.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2016年第11期111-119,共9页
Journal of the China Railway Society
基金
国家自然科学基金(51678572)
中国神华集团科研专项(SHGF-14-55)
中国铁路总公司科技研究开发计划(2015G006-F)
关键词
围压
预应力
路基结构
构造方法
性能
confining stress
prestress
embankment structure
constructing method
behavior
