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A platform for research: civil engineering, architecture and urbanism
Double-layer multi-span simply-supported adjustable anti-deformation high-speed railway bridge crossing coal mine goaf
The invention discloses a double-layer multi-span simply-supported adjustable anti-deformation high-speed railway bridge spanning a coal mine goaf, which comprises two or more spans of main piers and two or more spans of main-layer bridges, and further comprises auxiliary-layer bridges, the main-layer bridges are composed of main-layer adjustable struts and main-layer beam slabs, and the main-layer adjustable struts and the main-layer beam slabs are arranged on the auxiliary-layer bridges. The main-layer bridge piers are arranged at the positions, where the ground subsidence is small, of the goaf, the main-layer adjustable supporting columns are fixedly installed at the top ends of the main bridge piers, and the auxiliary bridge sections are arranged above each main bridge section, so that vertical deformation of the auxiliary bridge sections on one main bridge section can be equally divided, and the main-layer adjustable supporting columns are fixedly installed at the top ends of the main bridge piers. The vertical deformation of each auxiliary bridge section is far smaller than the vertical deformation of the main bridge section, so that the vertical deformation between the auxiliary bridge sections is reduced, and finally, the height difference of a track joint can meet the requirements of high-speed rail construction and operation on track deformation; the vertical deformation between the main layer beam plates is reduced by adjusting the adjustable supporting columns above the main layer bridge piers; in addition, by adjusting the adjustable supporting columns above the auxiliary bridge piers, vertical deformation between the auxiliary bridge sections is reduced or eliminated, and therefore it is guaranteed that the height difference of the rail joints above the auxiliary bridge sections is smaller than 5 mm. In addition, deformation joints between the main layer beam plates and the auxiliary layer beam plates are reserved, so that horizontal deformation between the bridge piers is overcome.
本发明公开一种跨越煤矿采空区的双层多跨简支可调抗变形高铁桥，包括两跨或两跨以上的主桥墩和两跨或两跨以上的主层桥梁，还包括副层桥梁，所述主层桥梁由主层可调支柱和主层梁板组成，所述主层桥墩布置在采空区地面下沉量较小的地点，所述主层可调支柱固定安装在所述主桥墩的顶端上，通过在每一个主桥段上方设置多个副桥段，从而可以利用多个副桥段均分一个主桥段上的竖向变形，使得每个副桥段上的竖向变形均远远小于这个主桥段上的竖向变形，从而实现了减少副桥段间的竖向变形，最终可以确保轨道接缝的高差符合高铁建设和运营对轨道变形的要求；通过调整主层桥墩上方的可调支柱，减小主层梁板之间的竖向变形；此外，通过调整副桥墩上方可调支柱，减少或消除副桥段之间的竖向变形，从而保证副桥段上方铁轨接头处高差小于5mm。此外，通过预留主层梁板、副层梁板之间的变形缝，来克服桥墩间的水平变形。
Double-layer multi-span simply-supported adjustable anti-deformation high-speed railway bridge crossing coal mine goaf
The invention discloses a double-layer multi-span simply-supported adjustable anti-deformation high-speed railway bridge spanning a coal mine goaf, which comprises two or more spans of main piers and two or more spans of main-layer bridges, and further comprises auxiliary-layer bridges, the main-layer bridges are composed of main-layer adjustable struts and main-layer beam slabs, and the main-layer adjustable struts and the main-layer beam slabs are arranged on the auxiliary-layer bridges. The main-layer bridge piers are arranged at the positions, where the ground subsidence is small, of the goaf, the main-layer adjustable supporting columns are fixedly installed at the top ends of the main bridge piers, and the auxiliary bridge sections are arranged above each main bridge section, so that vertical deformation of the auxiliary bridge sections on one main bridge section can be equally divided, and the main-layer adjustable supporting columns are fixedly installed at the top ends of the main bridge piers. The vertical deformation of each auxiliary bridge section is far smaller than the vertical deformation of the main bridge section, so that the vertical deformation between the auxiliary bridge sections is reduced, and finally, the height difference of a track joint can meet the requirements of high-speed rail construction and operation on track deformation; the vertical deformation between the main layer beam plates is reduced by adjusting the adjustable supporting columns above the main layer bridge piers; in addition, by adjusting the adjustable supporting columns above the auxiliary bridge piers, vertical deformation between the auxiliary bridge sections is reduced or eliminated, and therefore it is guaranteed that the height difference of the rail joints above the auxiliary bridge sections is smaller than 5 mm. In addition, deformation joints between the main layer beam plates and the auxiliary layer beam plates are reserved, so that horizontal deformation between the bridge piers is overcome.
本发明公开一种跨越煤矿采空区的双层多跨简支可调抗变形高铁桥，包括两跨或两跨以上的主桥墩和两跨或两跨以上的主层桥梁，还包括副层桥梁，所述主层桥梁由主层可调支柱和主层梁板组成，所述主层桥墩布置在采空区地面下沉量较小的地点，所述主层可调支柱固定安装在所述主桥墩的顶端上，通过在每一个主桥段上方设置多个副桥段，从而可以利用多个副桥段均分一个主桥段上的竖向变形，使得每个副桥段上的竖向变形均远远小于这个主桥段上的竖向变形，从而实现了减少副桥段间的竖向变形，最终可以确保轨道接缝的高差符合高铁建设和运营对轨道变形的要求；通过调整主层桥墩上方的可调支柱，减小主层梁板之间的竖向变形；此外，通过调整副桥墩上方可调支柱，减少或消除副桥段之间的竖向变形，从而保证副桥段上方铁轨接头处高差小于5mm。此外，通过预留主层梁板、副层梁板之间的变形缝，来克服桥墩间的水平变形。
Double-layer multi-span simply-supported adjustable anti-deformation high-speed railway bridge crossing coal mine goaf
一种跨越煤矿采空区的双层多跨简支可调抗变形高铁桥
DAI HUAYANG (author) / YAN YUEGUAN (author) / HE MANCHAO (author)
2024-09-06
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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