U型结构在铁路路堤地段的应用研究

结合某铁路工程,对路堤地段U型结构的断面形式进行了描述,重点阐述U型结构设计中的计算模型、土压力计算与结构内力分析,提出了边墙与底板的内力变化规律。U型结构在路堤地段具有良好的收坡效果;U型结构设计可按单筋受弯构件计算,边墙控制截面位于边墙截面变化处与边墙悬臂段根部;底板控制截面位于跨中截面与底板固结段根部处。最后对一工程实例进行计算分析,对今后类似工程设计具有借鉴意义。

Application Study of U-shaped Structure in Railway Embankment

Combining with a railway project,this paper discussed the cross-section of U-shaped structure of railway embankment,especially focusing on the calculation model,earth pressure calculation and the internal force analysis of U-shaped structure.And then this paper put forward the change rules of internal force of sidewall and bottom slab.This paper thinks that,the U-shaped structure in railway embankment has good effect on slope shortening;the control sections of side wall are at the place where the crosssection chenges and at the root part of the cantilever wall;the control section of bottom slab are at the mid-span section and at the root part of fixed bottom slab.FInally,an actual project case was calculated and analyzed,giving reference for similar project.