Device for preventing beam type bridge from overturning

Abstract

The invention discloses a device for preventing a beam type bridge from overturning. The device comprises a plurality of overturning preventing units arranged on the two sides of the beam type bridge.Each overturning preventing unit is connected with the main beam and the corresponding pier stud. Each overturning preventing unit comprises a first part and a second part which are connected with the main beam or the corresponding pier stud respectively; the first part comprises a core rod, a limiting block and a first anchoring block; one end of the core rod is provided with a first anchoring block and the other end is provided with a limiting block; the second part comprises a stop block and a second anchoring block; a through hole matched with the cross section of the core rod is formed in the stop block; a gap is formed between the core rod and the inner wall of the through hole; the stop block is connected with the corresponding pier stud or the main beam through the second anchoring block; the limiting block is tightly attached to the stop block to restrain the relative position between the first anchoring block and the second anchoring block. According to the method, the problem of overturning reinforcement of an existing beam type bridge can be solved, the situation that too complex structural measures are adopted for preventing the bridge from overturning can be avoided,and therefore the construction cost of the structure is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge structures, in particular to a device for preventing girder bridges from overturning. Background technique [0002] A girder bridge is a bridge in which the main girder is used as the main load-bearing structure. Under the action of vertical load on its upper structure, the fulcrum only produces vertical reaction force. Beam bridge is one of the basic systems of bridges. It is convenient to manufacture and erect, widely used, and occupies a large proportion in bridge structures. Beam bridges can be divided into simply supported girder bridges, continuous girder bridges and cantilever girder bridges according to their stress forms. In the structural design, the overturning problem of girder bridges is a problem that needs to be paid attention to, especially for continuous girders where the middle pier is a single column supporting a single support bridges, and simply supported girder bridges with ...

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Problems solved by technology

[0009] However, the tension / compression support is more expensive, and the replacement of the original support requires lifting the beam body, which makes the construction complicated

[0010] To sum up, practice has shown that girder bridges, especially continuous girder bridges with single-column and single-support middle piers and simply-supported girder bridges with double-supports close together, are prone to overturning accidents, and overturning reinforcement for existing bridges of this type There is a certain urgency, but the current reinforcement method is more complicated to construct, the cost is higher, and it is limited by the space

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