路堤式 U 型结构有限元分析

张劲松 郭 超

铁道工程学报 ›› 2012, Vol. 29 ›› Issue (2) : 13-18.

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PDF(1068 KB)
铁道工程学报 ›› 2012, Vol. 29 ›› Issue (2) : 13-18.
地质与路基

路堤式 U 型结构有限元分析

  • 张劲松 郭 超
作者信息 +

Analysis of Embankment U - shaped Structure with Finite Element Method

  • ZHANG Jin - song,GUO Chao
Author information +
文章历史 +

摘要

研究目的: 由于城际轨道交通、客运专线等高速铁路穿越经济发达地区,铁路用地紧张,轨道对路基工后沉降的要求较高。路堤式 U 型结构既能节省用地,同时又能提高路堤的稳定性,降低路基的工后沉降,为地质条件较差的平原区修建城际轨道交通、客运专线等高速铁路路基提供借鉴。
研究结论: 通过对路堤式 U 型结构的受力和变行规律分析,得出了底板和边墙的应力应变随结构高度和厚度的变化规律。底板和边墙的 X 轴方向弯矩是控制弯矩,底板弯矩的最大值在边墙处,边墙弯矩的最大值在底部。路堤式 U 型结构的整体稳定性较高,变形较小,能够有效控制路基变形。

Abstract

Research purposes: As intercity rail transit and passenger dedicated line pass through the developed areas,the land resource in these areas becomes less and less,so the track requires higher standard for the post - construction settlement of the subgrade. In this paper,an embankment U - shaped structure is presented. By using it,the land resource can be saved,the embankment stability can be enhanced and the post - construction settlement of the subgrade can be cut. It can provide the reference to the subgrades of the intercity rail transit and passenger dedicated line built in the plain area with bad geological conditions.
Research conclusions: The load bearing and deformation laws of the embankment U - shaped structure are analyzed to obtain the change law of the stress - strain of the bottom plate and side - wall corresponding to the structure height and thickness. The moments of X axial direction of the bottom plate and side - wall are the control moments. The max moment of bottom plate is on the side - wall,and the max moment of side - wall is on bottom. The embankment U - shaped structure has features of higher whole stability and less deformation and it can control the subgrade deformation effectively.

关键词

路堤 / U 型结构 / 有限元 / 弹性地基

Key words

embankment / U - shaped structure / finite element method / elastic foundation

引用本文

导出引用
张劲松 郭 超. 路堤式 U 型结构有限元分析[J]. 铁道工程学报, 2012, 29(2): 13-18
ZHANG Jin - song,GUO Chao. Analysis of Embankment U - shaped Structure with Finite Element Method[J]. Journal of Railway Engineering Society, 2012, 29(2): 13-18
中图分类号: U213+1   

参考文献

[1] 丁兆锋,吴沛沛. U 型槽结构设计与分析[J]. 铁道工程学报,2009( 4) : 73 -76.
Ding Zhaofeng,Wu Peipei. U Shape Structure Design &Analysis[J]. Journal of Railway Engineering Society,2009( 4) : 73 - 76.
[2] 李海光. 新型支挡结构设计与工程实例[M]. 北京: 人民交通出版社,2004.
Li Haiguang. New Type Supporting and Retaining Structure Design and Engineering Example[M]. Beijing: China Communications Press,2004.
[3] TB 10621—2009,高速铁路设计规范( 试行) [S].
TB 10621—2009,Code for Design of High Speed Railway[S].
[4] 孙爱斌,吴连海. 天津某封闭式路堑 U 型槽结构的设计与计算[J]. 铁道工程学报,2006( 10) : 21 -25.
Sun Aibin,Wu Lianhai. One Enclosed Cutting U Shape Structure Design & Calculation of Tian Jin[J]. Journal of Railway Engineering Society,2006( 10) : 21 - 25.
[5] 何颐华,杨斌,金宝森. 深基坑护坡桩土压力的工程测试及研究[J]. 土木工程学报,1997( 1) : 27 -30.
He Yihua,Yang Bin,Jin Baoshen. Test & Study on Safeguard Piles of Deep Cut Slop [J] . China Civil Engineering Journal,1997( 1) : 27 - 30.
[6] 李庆海,张夏临. 桩板式 U 型槽结构在成都地铁膨胀岩土的应用[J]. 路基工程,2008( 4) : 30 -34.
Li Qinghai,Zhang Xialin. Application of Pile - Broad Model U Shape Structure in Subway Engineering of Dilatable Rock and Soil[J]. Subgrade Engineering, 2008( 4) : 30 - 34.
[7] 梁雄,周建庭,杨圣超. 湿软土基地段 U 型槽式结构应用技术[J]. 重庆交通大学学报,2007( 12) : 40 -44.
Application of U Shape Structure in Wet Soft Soil Foundation[J]. Journal of Chongqing Jiaotong University, 2007( 12) : 40 - 44.
[8] TB 10025—2006,铁路路基支挡结构设计规范[S].
TB 10025—2006, Code for Design on Retaining Structures of Railway Subgrade[S]
 

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