Modular expansion device and bridge

Abstract

The invention relates to an expansion joint and provides a modular expansion device. The modular expansion device comprises two edge beams, wherein the two edge beams are located on two sides of the expansion joint and are opposite to each other. The modular expansion device is characterized by further comprising at least one middle beam and a support beam; the middle beams are successively arranged between the two edge beams along the same direction of the edge beams; the support beam crosses over the expansion joint and is located under the middle beams; the edge beams and the middle beams are supported and mounted on the support beam; two ends of the support beam are respectively fixed on two sides of the expansion joint via a fixed steel ball support seat and a movable pressure-bearing support seat; each middle beam is connected with the edge beam which directly faces the middle beam or the other middle beam via a waterproof adhesive tape. The invention also provides a bridge comprising the expansion device. According to the expansion device, a displacement control system of the expansion device adopts an elastic system, so that the expansion device has certain adaptability to level angle; meanwhile, one end of the support beam is supported by the movable pressure-bearing support seat while the other end of the support beam is supported by the fixed steel ball support seat, so that the support beam can be adapted to the expansion change of the expansion joint and the multidirectional displacement of the expansion device caused by running of automobile wheels.

Description

technical field

[0001] The invention relates to an expansion joint, in particular to a modular expansion device and a bridge. Background technique

[0002] The telescopic device is a key part of the bridge components and plays an important role in realizing the bridge function. The national standard "Road Engineering Terminology Standard" (GBJ124-1988) and the traffic industry standard "Highway Engineering Terminology and Structural Terminology" (JTJ 002-87) define the expansion device of the bridge as: in order to make the vehicle pass the bridge deck smoothly and meet the bridge deck structure Deformation needs, the general term for devices installed at bridge deck expansion joints.

[0003] At present, the commonly used bridge expansion devices can be divided according to the system: ①Modular bridge expansion device; , Modular comb plate type multi-directional displacement bridge telescopic device, etc.

[0004] Traditional modular joints do not have multi-directional ...

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