四肢异形独塔斜拉桥桥塔设计
Tower Design of Cable-stayed Bridge with Single Tower and Four Special-shaped Limbs
胡智敏 1丁伟亮 1宁鑫淼 1曾冬雷 1李萌1
作者信息
- 1. 广东省建筑设计研究院有限公司 广州 510010
- 折叠
摘要
邓州市穰城跨湍河大桥为主跨90m+90m的空间框架式独塔钢-混凝土组合梁斜拉桥,主塔采用四肢异形空间框架式独塔,桥塔设计总高75.5m,四根塔柱倾斜角度较大,且上塔柱为空间曲线结构,塔柱受弯、剪、扭效应明显.结合MIDAS Civil对桥塔进行静、动力分析.索塔上采用多种形式的横梁,针对不同位置的横梁选择相对最优的衔接位置、锚固方式来优化设计.总结四肢异形独塔斜拉桥在桥塔设计中遇到的重难点,为类似桥塔设计提供参考.
Abstract
Tuanhe Bridge is a single tower cable-stayed bridge,with a steel-concrete composite spatial frame tower,and with the 90m+90m main span across Tuanhe river in Dengzhou city.The design height of main sin-gle tower is 75.5m,with four special-shaped limbs.The four tower columns have large dip angle,curved top profile,and as a result,significantly higher bending,shear,and torsion effects.Based on MIDAS Civil,static and dynamic analysis were carried out to study the mechanical state of bridge tower.Using a variety of forms beams in cable tower,different cohesion positions,anchoring methods were selected for design optimization.Through the tower design of cable-stayed bridge with single tower and four special-shaped limbs,the main points and difficulties were concluded,and can be referenced by similar bridge tower design.
关键词
四肢异形/空间框架式/独塔斜拉桥/桥塔设计/受力分析Key words
Four special-shaped limbs/Spatial frame/Single tower cable-stayed bridge/Bridge tower de-sign/Force analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据