Pre-stress cable-stayed bailey beam combined bearing system

Abstract

The invention provides a pre-stress cable-stayed bailey beam combined bearing system. The system comprises a bailey beam, beam end supports, a mid-span jointing support seat, stay cables, beam end anchoring ends and a pre-stress tension system. The bailey beam is formed by combination of bailey trusses; the beam end supports with supporting effects are arranged on two sides of the bailey beam; themid-span jointing support seat serving as a mid-span supporting structure is positioned under the middle of the bailey beam; the stay cables are connected with two ends of the bailey beam and the mid-span jointing support seat and capable of generating supporting reaction force; the beam end anchoring ends have a function of anchoring the pre-stress stay cables; the pre-stress tension system is used for tensioning of the stay cables. By combination of a cable-stayed stress structure of the stay cables and a simply-supported stress structure of the bailey beam, material consumption increase isavoided, clearance is slightly affected, stress advantages of two systems are given into full play, a span of the bailey beam is increased, material consumption is reduced, and under-beam clearance influences are reduced. The system has advantages that defects of failure in span increasing of a traditional bailey beam structure and lack of terrain conditions in adoption of floor stands are avoided, and stress system clearness, convenience in construction operation, structural safety and sharp reduction of material consumption are realized.

Description

technical field [0001] The invention belongs to the field of engineering machinery, and in particular relates to a prestressed cable-stayed Bailey beam combined bearing system. Background technique [0002] In the field of civil engineering construction, continuous girder bridges have been widely used because of their strong adaptability and convenient construction. The basic construction equipment necessary for the construction of continuous girder bridges is load-bearing brackets. Due to terrain or traffic requirements in many areas, non-floor brackets must be erected. The non-floor support generally adopts the form of section steel or Bailey beam support. The span of section steel support is small and the adaptability is low, so it is only suitable for small spans. Bailey beams have been widely used due to their better stress structure and convenient assembly methods. However, in some large-span construction applications, such as across large rivers, river valleys, or ac...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a prestressed cable-stayed Bailey beam combined load-bearing system to solve the above-mentioned multiple defects caused by the existing simply supported beam load-bearing structure

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