Large-span aluminium alloy pedestrian overpass transverse supporting system with awning

Abstract

The invention discloses a large-span aluminium alloy pedestrian overpass transverse supporting system with an awning. A large-span aluminium alloy pedestrian overpass longitudinal parallel chord trussis reliably connected through a transverse supporting system; the transverse supporting system consists of an awning component and a bridge deck secondary truss, wherein the awning component and thebridge deck secondary truss are simultaneously formed; the awning component is positioned at the upper part of a longitudinal parallel chord truss vertical web member, and the bridge deck secondary truss is positioned at the lower part of the longitudinal parallel chord truss vertical web member. According to the large-span aluminium alloy pedestrian overpass transverse supporting system with theawning, as the awning component at the upper part is additionally arranged on the basis of an original half-through type bridge deck secondary truss, the integral stability of a main bridge is guaranteed through a transverse supporting rod; and meanwhile, the span of the main bridge is effectively increased. Due to the additionally arranged transverse supporting rod, the bridge deck secondary truss does not need to consider a lateral supporting effect on an upper chord and only considers a function of bearing the load of a bridge deck; and therefore, the height of the secondary truss can be obviously reduced at the big span; and that is to say that the integral cost of a stairway system is reduced by reducing the pedestrian crossing climbing height from the side surface.

Description

technical field [0001] The invention relates to a lateral support system of a large-span aluminum alloy pedestrian bridge with a rain canopy, in particular to a large-span (>35m) aluminum alloy pedestrian bridge applied to frequent rainy and snowy weather conditions. Background technique [0002] Aluminum alloy has good corrosion resistance, rich color and full of texture. With the continuous advancement of urbanization, the demand for urban pedestrian bridges is increasing day by day. The application of aluminum alloy profiles to pedestrian bridges has become a trend, and the elastic modulus of aluminum alloys has not been avoided. Lower weak points, while controlling the deformation of the main bridge during the normal use stage. The main bridge generally adopts a parallel chord truss structure, and usually uses a higher intermediate-supported horizontal secondary truss and deck deck to ensure the stability of the upper chord of the main bridge , has been widely used in...

AI Technical Summary

Problems solved by technology

[0002] Aluminum alloy has good corrosion resistance, rich color and full of texture. With the continuous advancement of urbanization, the demand for urban pedestrian bridges is increasing day by day. The application of aluminum alloy profiles to pedestrian bridges has become a trend, and the elastic modulus of aluminum alloys has not been avoided. Lower weak points, while controlling the deformation of the main bridge during the normal use stage. The main bridge generally adopts a parallel chord truss structure, and usually uses a higher intermediate-supported horizontal secondary truss and deck deck to ensure the stability of the upper chord of the main bridge , has been widely used in small and medium-sized spans of aluminum alloy pedestrian bridges, but for aluminum alloy pedestrian bridges with large spans (>35m), the higher intermediate-supported horizontal secondary trusses not only increase the climbing height of pedestrians, but also increase the The overall cost of the main bridge and stairways, so it is necessary to upgrade and transform the lateral support system of the long-span aluminum alloy pedestrian bridge to improve the economy and applicability of the long-span aluminum alloy pedestrian bridge

Images