摘要
结合拟建的天兴洲三主桁公铁两用结合梁斜拉桥,建立了大跨度公铁两用斜拉桥空间计算模型,并对其在恒载、活载、温度作用下静力性能进行了研究.重点探讨了不同主梁纵向约束方式对大跨度公铁两用斜拉桥静力性能的影响以及主梁合理纵向约束刚度.计算结果表明:对主梁设置合理纵向约束刚度,能使结构的受力性能得到改善.
On the background of a highway/railway combined composite girder three-truss cable- stayed bridge which will be built. The three dimensional model of the long span combined road and railway cable stayed bridge was established and the static characteristics of structure, under the dead load,live load and temperature load, was discussed. The effect of different longitudinal restraint conditions was research, that in the main girder on the the static characteristics of the structure and reasonable longitudinal restraint rigidity .The result shows that the characteristics of the structure are improved obviously if the main girders have reasonable longitudinal restraint rigidity. 2figs., 17tabs., 5refs.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2007年第3期66-70,共5页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金项目(40671153)
关键词
纵向约束方式
公铁两用斜拉轿
结构特性
三主桁
longitudinal restraint conditions
road and railway cable-stayed bridge
structural characteristics
three trusses
