常规桥梁等截面板墩纵横向计算长度探讨
Discussion on the Longitudinal and Transverse Calculation Length of Conventional Bridges with Equal Cross-Section Panel Piers
何钟瑜1
作者信息
- 1. 广州地铁设计研究院股份有限公司,广州 510000
- 折叠
摘要
乌拉斯沟大桥采用 16×30 m先简支后连续小箱梁结构,是G331 线青河(塔克什肯)至富蕴至阿勒泰段重要节点,墩高较高且墩高差异较大.论文基于受压构件的转角位移方程和欧拉公式,推导出了适用于板墩的一端固定、一端有转动和水平弹性约束构件的计算长度系数公式,并结合计算模型对该桥板墩 6 个方向的位移与转角变形进行分析,得到了相应的约束刚度,计算出了板墩的纵横向计算长度系数,从而实现对其进行受力计算.
Abstract
Wulasigou Bridge adopts 16×30 m simple supported and then continuous small box girder structure.It is an important node of Qinghe(Takshken)to Fuyun to Altai of G331 line,with high pier height and great difference in pier height.Based on the angular displacement equation and Euler's formula of the compression member,this paper deduces the formula of calculating length coefficient for the member with fixed end,rotation end and horizontal elastic constraint.Combined with the calculation model,the displacement and angular deformation of the pier in 6 directions were analyzed,the corresponding constraint stiffness was obtained,and the longitudinal and longitudinal length coefficient of the pier was calculated,so as to realize the force calculation.
关键词
常规桥梁/等截面板墩/纵横向/计算长度系数/变形分析Key words
conventional bridge/plate pier with equal section/vertical and horizontal/calculate the length coefficient/deformation analysis引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据