摘要
连续组合拱桥是连续梁、拱桥、组合结构等不同结构体系相结合形成的一种新型结构形式。这种结构体系既有连续梁桥的受力特征,也有拱桥的受力特征,但又不完全相同于这两种桥型。为了了解这种新型结构的受力特性,以建设中的九堡大桥主桥(三跨连续组合系杆拱桥)为例,采用有限元方法,计算了不同荷载工况下的结构受力,分析了主要构件的受力特点。计算结果表明多跨连续组合拱桥是以拱桥受力特征为主,连续梁的受力特性表现较弱。
Continuous composite arch bridge as a new structure is composed of different type of structures such as continuous beam bridge,arch bridge and composite structure etc.The mechanical behavior of continuous composite arch bridge likes that of both continuous beam bridge and arch bridge,but they are not same completely.To know the mechanical behavior of this type of bridge,combined the constructing main bridge of Jiubao bridge,a 3-span continuous composite arch bridge,finite element method was used to calculate the mechanical behavior of this bridge burdened different loadings and mechanical characteristics of main components in this bridge were analyzed.The calculation results show that multi-span continuous composite arch bridge mainly behaves like a arch bridge and the continuous beam action is weak.
出处
《结构工程师》
2010年第6期54-58,共5页
Structural Engineers
关键词
拱桥
连续梁
组合结构
有限元
结构分析
arch bridge
continuous beam
composite structure
finite element
structural analysis
