韩江北桥主桥结构动力特性分析
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摘要
文中以韩江北桥主桥五跨连续无风撑斜靠式钢管混凝土系杆拱桥为研究对象,论述了无风撑斜靠式钢管混凝土系杆拱桥结构动力性能分析理论。利用大型通用有限元计算软件ANSYS建立该桥空间三维分析模型,采用子空间法分析结构的动力性能,确定成桥状态下的自振频率与振型。同时利用钢管混凝土结构设计规程及相关设计理论,对该桥的动力特性进行分析。
In this paper, Hanjiang North Main Bridge——85m +114 m +160 m +114 m +85 m five-span continuous leaning type with no wind bracing system concrete-filled steel tube tied arch bridge for the study, discusses the type of leaning type with no wind bracing system concrete-filled steel tube dynamic performance analysis of arch structure theory. The use of large-scale general-purpose finite element software ANSYS to establish the space of 3-D analysis of the bridge model, the use of sub-space analysis of the dynamic properties of the structure to determine the state bridge natural frequency and vibration mode. At the same time, the use of the structural design of concrete-filled steel tube design theory and related to design theory, the dynamic characteristics of the bridge analysis.
In this paper, Hanjiang North Main Bridge——85m +114 m +160 m +114 m +85 m five-span continuous leaning type with no wind bracing system concrete-filled steel tube tied arch bridge for the study, discusses the type of leaning type with no wind bracing system concrete-filled steel tube dynamic performance analysis of arch structure theory. The use of large-scale general-purpose finite element software ANSYS to establish the space of 3-D analysis of the bridge model, the use of sub-space analysis of the dynamic properties of the structure to determine the state bridge natural frequency and vibration mode. At the same time, the use of the structural design of concrete-filled steel tube design theory and related to design theory, the dynamic characteristics of the bridge analysis.
引文
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[2]丁皓江,何福保,谢贻权,等.弹性和塑性力学中的有限单元法(第二版)[M].北京:机械工业出版社,1989:61-66.
[3]户川隼人.振动分析的有限元法[M].北京:地震出版社,1985:15.
[4]吴鸿庆,任侠.杆系结构有限元[M].兰州:兰州铁道学院工程结构研究所,1994:5.
[5]张汝清,董明.结构计算程序设计[M].重庆:重庆出版社,1988:9.
[6]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007:6-21.
[7]钟善桐.钢管混凝土统一理论[J].哈尔滨市建筑工程学院学报,1994,27(6):22.
[8]苏虹,胡世德.钢管混凝土拱桥的地震响应分析方法[J].同济大学学报,2003,31(4):404-407.
[9]钟轶峰,殷学纲,陈淮.斜靠式异型拱桥体系振动特性分析[J].桥梁建设,2005(2):8-11.
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