3D numerical reasearch on bridge-subgrade transition

MENG Fan-hui; HOU Yong-feng; WU Tao

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3D numerical reasearch on bridge-subgrade transition

更新时间：2026-06-25

- 3D numerical reasearch on bridge-subgrade transition
- Vol. 28, Issue S1, (2007)
- 作者机构：
  
  1. 北京交通大学土木建筑工程学院,北京,100044
  2. 华东交通大学土建学院,南昌,330013
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB115
- Online First：28 March 2014，
  
  Published：2007
- 稿件说明：
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MENG Fan-hui, HOU Yong-feng, WU Tao. 3D numerical reasearch on bridge-subgrade transition[J]. 2007, 28(S1).
DOI：

MENG Fan-hui, HOU Yong-feng, WU Tao. 3D numerical reasearch on bridge-subgrade transition[J]. 2007, 28(S1). DOI：

摘要

根据秦沈客运专线DK266+521路桥过渡段结构形式及过渡段的路基面纵向、横向的动应力测试结果，采用三维有限差分数值计算，模拟了动荷载作用下过渡段的沉降变形分别在线路纵向、横向及路基深度方向的变化规律及过渡段设置形式、材料刚度、过渡段的尺寸对沉降变形的影响。结果表明，正梯形过渡段的性能优于倒梯形过渡段；过渡段碎石刚度必须满足一定的要求；过渡段梯形上下底宽的变化对过渡段沉降的影响不明显。

Abstract

Based on the construction form of transition zone and the longitudinal and transverse stresses measured from the DK266+521 bridge-subgrade transition in Qin-Shen passenger special line

the longitudinal

transverse and in-depth settlements of track transition under traveling load are analyzed by finite-difference program FLAC3D

and the settlement with different factors such as format

material stiffness

and dimension is also studied. The results show that: the engineering effect of track transition in trapezium form is better than in inverse trapezium form; the graded broken stone should be intensive enough; the size of trapezium has little effect on settlement.

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