摘要
梁拱组合连续梁桥集"梁"与"拱"桥梁受力元素于一体,该桥型结构将梁的弯矩通过梁拱间的吊杆转化为拱的轴向压力,充分发挥了拱的受压性能,能有效地降低梁的弯矩。同时使梁的跨越能力增大,提升桥梁景观效果。在桥下净空受限、地基承载能力较差、对桥梁景观有要求时,可采用下承式梁拱组合连续桥梁。以运城市某省道上一座下承式梁拱组合连续梁桥为研究对象,通过对该桥建立不同设计参数的有限元模型,对比分析出结构的敏感性参数,对以后该类型桥梁的设计提供参考和借鉴。
The beam-arch combination continuous beam bridge integrates bridge stress element of beam and arch. The structure of this bridge type converts bending moment of beam to axial compression of arch through suspender between beam and arch, which gives full play to compression performance of arch and effectively reduces the bending moment of beam. Meanwhile, the span ability of beam was enhanced to improve the bridge landscape effect. The through beam-arch combination continuous beam bridge could be adopted when the clearance under bridge is insufficient, foundation capability is poor and there is requirement for bridge landscape.Taking a through beam-arch combination continuous beam bridge in Yuncheng as the research object, this paper comparatively analyzed the sensitive parameters of structure by virtue of building finite element model with different design parameters for this bridge, which could provide reference for the design of similar bridges.
作者
关伟
米思颖
GUAN Wei;MI Si-ying(Shanxi Transportation Research Institute,Taiyuan,Shanxi 030006,China;Zhongjiao Tongli Construction Co.,Ltd.,Xi’an,Shaanxi 710075,China)
出处
《山西交通科技》
2019年第1期43-47,共5页
Shanxi Science & Technology of Transportation
关键词
梁拱组合梁桥
刚度
敏感性参数
拱轴系数
矢高
beam-arch combination continuous beam bridge
stiffness
sensitive parameters
arch-axis coefficient
vector height
