A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large-span bridge beam end telescopic structure suitable for high-speed maglev traffic
The invention discloses a large-span bridge beam end telescopic structure suitable for high-speed maglev traffic, and the structure comprises a front-end track beam, a plurality of middle track beams and a rear-end track beam which are arranged in sequence; the lower portions of the middle track beams are connected with the main bridge through movable supports. The front-end track beam, the middle track beam and the rear-end track beam are connected in series through elastic devices; the front end of the front-end track beam is connected with an approach bridge through a fixing support, and the tail end of the rear-end track beam is connected with a main bridge through a fixing support. The invention has the beneficial effects that the elastic device and the movable support are arranged between the track beams of the main bridge, so that the beam end large displacement of a large-span bridge caused by temperature change can be converted into a plurality of uniform small displacements between the track beams in a telescopic structure, and the problem of stator gap overrun is solved; meanwhile, the good force transmission performance is achieved between the track beams, and the longitudinal stability and displacement consistency of the telescopic structure can be guaranteed.
本发明公开一种适用于高速磁浮交通的大跨度桥梁梁端伸缩结构，包括，依序设置的前端轨道梁、若干中间轨道梁和后端轨道梁；中间轨道梁的下方均通过活动支座与主桥连接；前端轨道梁、中间轨道梁和后端轨道梁之间均通过弹性装置串联连接；前端轨道梁的前端通过固定支座与引桥连接，后端轨道梁的末端通过固定支座与主桥连接。有益效果是，由于在主桥的轨道梁之间安装有弹性装置以及活动支座，因此可保证将大跨度桥梁受温度变化产生的梁端大位移转换为伸缩结构中轨道梁间的若干均匀小位移，从而解决定子间隙超限的问题；同时各轨道梁间具有良好的传力性能，可保证伸缩结构的纵向稳定性和位移一致性。
Large-span bridge beam end telescopic structure suitable for high-speed maglev traffic
The invention discloses a large-span bridge beam end telescopic structure suitable for high-speed maglev traffic, and the structure comprises a front-end track beam, a plurality of middle track beams and a rear-end track beam which are arranged in sequence; the lower portions of the middle track beams are connected with the main bridge through movable supports. The front-end track beam, the middle track beam and the rear-end track beam are connected in series through elastic devices; the front end of the front-end track beam is connected with an approach bridge through a fixing support, and the tail end of the rear-end track beam is connected with a main bridge through a fixing support. The invention has the beneficial effects that the elastic device and the movable support are arranged between the track beams of the main bridge, so that the beam end large displacement of a large-span bridge caused by temperature change can be converted into a plurality of uniform small displacements between the track beams in a telescopic structure, and the problem of stator gap overrun is solved; meanwhile, the good force transmission performance is achieved between the track beams, and the longitudinal stability and displacement consistency of the telescopic structure can be guaranteed.
本发明公开一种适用于高速磁浮交通的大跨度桥梁梁端伸缩结构，包括，依序设置的前端轨道梁、若干中间轨道梁和后端轨道梁；中间轨道梁的下方均通过活动支座与主桥连接；前端轨道梁、中间轨道梁和后端轨道梁之间均通过弹性装置串联连接；前端轨道梁的前端通过固定支座与引桥连接，后端轨道梁的末端通过固定支座与主桥连接。有益效果是，由于在主桥的轨道梁之间安装有弹性装置以及活动支座，因此可保证将大跨度桥梁受温度变化产生的梁端大位移转换为伸缩结构中轨道梁间的若干均匀小位移，从而解决定子间隙超限的问题；同时各轨道梁间具有良好的传力性能，可保证伸缩结构的纵向稳定性和位移一致性。
Large-span bridge beam end telescopic structure suitable for high-speed maglev traffic
一种适用于高速磁浮交通的大跨度桥梁梁端伸缩结构
WU WEIFAN (author) / WANG JIAN (author) / HU XUHONG (author) / XU PINGWEI (author)
2021-07-09
Patent
Electronic Resource
Chinese
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