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A large displacement seamless composite expansion joint and a bridge

A large displacement, expansion joint technology, applied in bridges, bridge parts, bridge construction and other directions, can solve the problems of complex structure, easy entry of sand and gravel particles, affecting the use function, etc., to achieve reasonable structure, convenient and flexible construction and maintenance, and suitable for wide range of effects

Inactive Publication Date: 2019-01-15
HEILONGJIANG COLLEGE OF CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modular expansion joints have a large expansion range, which can meet the displacement requirements of long-span bridges, but the structure is complex and easy to enter sand and gravel particles. If it is not cleaned, it will easily affect the use function

Method used

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  • A large displacement seamless composite expansion joint and a bridge
  • A large displacement seamless composite expansion joint and a bridge
  • A large displacement seamless composite expansion joint and a bridge

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Effect test

specific Embodiment approach 1

[0015] Specific implementation mode one: as Figure 1~Figure 5 As shown, the present invention discloses a large-displacement seamless combined expansion joint, which includes a waterstop 2, an elastic filling belt 7, two joists 1, two pavement layers 8, and a plurality of precast concrete blocks 3. The cross-sections of the two joists 1 are right-angled trapezoidal, and the lower bottom of each joist 1 extends horizontally in the direction of the inclined surface with a protruding portion 1-1, and the protruding portions 1-1 of the two joists 1 The waterstops 2 are installed at intervals relative to each other, and the waterstop 2 is loosely installed between the two protruding parts 1-1. A row of combs is fixed at the angle between the inclined surface of each joist 1 and the protruding part 1-1 along its length direction. board 1-2, the shape of the comb board 1-2 is parallelogram and the direction is consistent with the direction of the protruding part 1-1, and the plurali...

specific Embodiment approach 2

[0016] Specific implementation mode two: as figure 1 , 2 , 4, this embodiment is a further description of specific embodiment one. The vertical surfaces of the two joists 1 are respectively fixed with a row of embedded steel plates 1-3 along the length direction, and the embedded steel plates 1-3 3 are all welded and fixed with connecting steel bars 4.

specific Embodiment approach 3

[0017] Specific implementation mode three: as figure 1 , 3 As shown, this embodiment is a further description of specific embodiment 1 or specific embodiment 2. The opposite end surfaces of the two protruding parts 1-1 are respectively provided with grooves, and the water stop belt 2 is tightly plugged. and be clamped between the two grooves.

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Abstract

The invention relates to a large displacement seamless composite expansion joint and a bridge, which relates to a bridge expansion joint. The lower bottom of the joist extends in the direction of theinclined surface. A water stop band is installed between the two projections, a row of comb plates are fixed at the angle between the inclined surface of the joist and the protrusion. A plurality of precast concrete blocks are supported on two projections. A row of comb slots are respectively arranged on both sides of the precast concreting block. A slot of that comb plate correspond to the comb plate one by one, a gap is left between the precast concrete block and the joist and a filling edge joint is arranged, the upper surface of the plurality of precast concrete block are connected into anorganic whole through two angle steels, an elastic filling belt is arranged between the two angle steels, and pavement layers are respectively arranged flush with each other between the two angle steels and the two joist. The composite expansion joint not only meets the needs of large displacement, but also is seamless, easy to maintain composite bridge expansion joints.

Description

technical field [0001] The invention relates to a bridge expansion joint, in particular to a large displacement seamless composite expansion joint and a bridge. Background technique [0002] In order to meet the needs of deformation, bridges are usually equipped with many expansion joints to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge construction materials. At the same time, bridge expansion joints should have the characteristics of durability, waterproof and convenient construction, and also need to ensure driving comfort. [0003] At present, the most commonly used bridge expansion joints are comb plate expansion joints, modular expansion joints and TST seamless expansion joints. Among them, comb-tooth plate expansion joints are the most widely used, and have many advantages such as stable driving, good waterproof performance, and automatic slag removal, while TST seamless expansion joints have strong environmental...

Claims

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Application Information

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IPC IPC(8): E01D19/06E01D1/00
CPCE01D1/00E01D19/06
Inventor 信思源沈义吴士超李楠徐晓娜王作成叶飞张琨
Owner HEILONGJIANG COLLEGE OF CONSTR
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