摘要
我国在建悬索桥跨度已突破2 300 m,而现行规范尚未给出评定超大跨悬索桥设计刚度的计算方法,致使其刚度选取无据可依。为研究2 300 m级超大跨悬索桥合理刚度表征指标体系,从行车安全性、舒适性的需求分析出发,提出了涵盖竖向、横向、扭转的多维度刚度体系。基于境内外刚度设计指标现状和既有桥梁刚度指标调研,提出了适用于多维度、多参数的刚度设计指标及其限值计算思路。本研究的思路可为同类超大跨度公路悬索桥刚度取值提供参考。
The span of suspension bridges that under construction in China has exceeded 2300 m,but there are no calculation methods for evaluating the stiffness of super-large span suspension bridges in current specifications,resulting in difficulties in stiffness design.In order to study the reasonable stiffness indexes of 2300 m super long-span suspension bridges,a multi-dimensional stiffness system is proposed based on the demand analysis of driving safety and comfort of long-span suspension bridges,covering vertical,horizontal,torsional aspects.Based on the current situation of stiffness design indexes at home and abroad and the investigation of existing bridge,the stiffness design indexes and their calculation methods suitable for multi-dimension and multi-index are proposed.The research ideas in this paper could provide references for stiffness design of other super-large span highway suspension bridges.
作者
欧长阳
冯岩
王茂强
王景全
李帅
OU Chang-yang;FENG Yan;WANG Mao-qiang;WANG Jing-quan;LI Shuai(Jiangsu Provincial Communications Engineering Construction Bureau,Nanjing 210004,China;Bridge Engineering Research Centre of Southeast University,Nanjing 211189,China;CCCC Highway Bridges National Engineering Research Centre Co.,Ltd.,Beijing 100088,China)
出处
《公路》
北大核心
2023年第6期52-57,共6页
Highway
基金
中国交通建设集团有限公司科技项目,项目编号YSZX-01-2021-01-B。
关键词
桥梁工程
2300
m级超大跨悬索桥
刚度指标体系
多维度多参数
bridge engineering
2300 m super-large span suspension bridge
stiffness index system
multi-dimension and multi-index
