Ground anchor deck type pedestrian bridge structure capable of being assembled and construction method

Abstract

The invention relates to a ground anchor deck type pedestrian bridge structure capable of being assembled and a construction method. The structure comprises ground anchor foundations, bearing cables,truss units, a bridge deck system and stabilizing cables; the bearing cables are flexible steel cables, and two sides are anchored on the ground anchor foundations; the truss units are of prefabricated steel structures, the lower ends of overall trusses formed by assembling the truss units are supported on the bearing cables, and the truss units and the bearing cables form string structures; the stabilizing cables are arranged on two transverse sides of the bridge floor to guarantee the torsional rigidity of the structure; the structure system adopts a non-bracket construction method and comprises the following steps: (1) constructing the ground anchor foundations; (2) mounting the bearing cables; (3) assembling the steel trusses; (4) constructing the bridge deck system; and (5) mounting the stabilizing cables. Compared with a traditional cableway bridge, the structural system is high in rigidity, the freedom degree of bridge deck linear design is high, and vibration response and pedestrian passing conditions can be improved; a lateral wind-resistant cable is not needed, and the requirement for the bridge position terrain is low; temporary brackets are not needed during construction, main components are prefabricated in factories, construction is convenient, and quality is easily guaranteed.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to an assembleable ground-anchor top-supporting pedestrian cable bridge structure and a construction method. Background technique [0002] Cableway bridge is a kind of structural form commonly used in mountainous area or scenic spot pedestrian bridge at present. Although this type of traditional spanning structure does not require pylons and has a simple and economical structure, it has many problems in actual use because it is a flexible bridge deck. The obstacles are large; the vibration response caused by pedestrian steps and wind loads is large, and the comfort is poor; lateral wind-resistant cables need to be arranged to ensure wind-resistant stability, and the requirements for the topography of the bridge are high; moreover, the above problems will increase with the increase of the span And more and more prominent. Contents of the invention [0003] In order to improve th...

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Problems solved by technology

Although this type of traditional spanning structure does not require pylons and is simple and economical in structure, it has many problems in actual use because it is a flexible bridge deck. The obstacles are large; the vibration response caused by pedestrian steps and wind loads is large, and the comfort is poor; lateral wind-resistant cables need to be arranged to ensure wind-resistant stability, and the requirements for the topography of the bridge are high; moreover, the above problems will increase with the span and become more prominent

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