大跨度自锚式斜拉-悬吊协作体系桥模型试验研究

英文篇名：Model Test for Large-span Self-anchored Cable-stayed Suspension Bridge
中文刊名：公路交通科技
英文刊名：Journal of Highway and Transportation Research and Development
作者：张哲 ; 杜高明 ; 谭岩斌 ; 王会利
英文作者：ZHANG Zhe1 ; DU Gao-ming1 ; TAN Yan-bing1 ; WANG Hui-li1(1.The Institute of Bridge ; Dalian University of Technology ; Liaoning Dalian 116023 ; China ; 2.Jiangsu Provincial Communication Planning Design Institute Co.Ltd. ; Jiangsu Nanjing 210005 ; China)
中文关键词：桥梁工程 ; 自锚式斜拉-悬吊协作体系桥 ; 模型试验 ; 力学性能
英文关键词：bridge engineering ; self-anchored cable-stayed suspension bridge ; model test ; mechanical property
出版日期：2007-06-15
机构：大连理工大学桥梁工程研究所,江苏省交通规划设计院有限公司,大连理工大学桥梁工程研究所,大连理工大学桥梁工程研究所辽宁大连116023,江苏南京210005,辽宁大连116023,辽宁大连116023
年：2007
期：06
出版单位：公路交通科技

摘要

某跨海大桥主通航孔为主跨800 m的自锚式混合梁斜拉-悬吊协作体系桥,通过模型试验对该新桥型的静力性能和动力特性进行了详细的研究,与基于有限元理论的计算结果进行了对比,试验结果与理论结果相吻合;分析了辅助墩、混合梁对该体系的动力影响:边跨增设辅助墩后,协作体系的各阶频率都有所增大,能改善协作体的1阶竖弯和1阶侧弯频率,能抑制桥梁在风载作用下的侧向位移;采用混合梁结构形式,使主梁自振频率均增加,提高了全桥的竖弯和横弯刚度,为自锚式斜拉-悬吊协作体系桥的设计和力学性能研究提供参考依据。
Based on the model test of a self-anchored hybrid beam cable-stayed suspension bridge with the 800 m main span,the static property and dynamic characteristis of the bridge are analysed.The test results show good agreement compared with FEM results.The influence of auxiliary pier and hybrid girder on the dynamic characteristics is analysed.All the frequencies are increased when the auxiliary pier is set.The first order upright bend frequency and the first order side bend frequency are improved,and the lateral displacement of girder is decreased under wind load.The structure stiffness of hybrid girder can be increased by improving the upright bend frequency and the side bend frequency.The conclusions are helpful for research and design on self-anchored cable-stayed suspension bridge.

引文

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