CN2307027Y

CN2307027Y - Expansion joint device for bridge

Info

Publication number: CN2307027Y
Application number: CN 97244577
Authority: CN
Inventors: 徐斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-04
Filing date: 1997-08-04
Publication date: 1999-02-10
Anticipated expiration: 2007-08-04

Abstract

The utility model l relates to an expansion joint device for a bridge. The utility model is particularly suitable for being arranged on the bridge of an expressway. The utility model is composed of fixed beams and a telescopic device, wherein, the telescopic device is a telescopic body whose middle is provided with a through hole. The utility model is composed of the integration which is connected by the telescopic body and the fixed beams on both sides of the telescopic body. The utility model can be produced in a factory, then moved to a bridge construction site and arranged on the prearranged telescopic seam between the pavements of a bridge floor and a bridge abutment, or between a bridge plate and a bridge abutment, and then the utility model and the bridge are fixed into integration in the method of concrete forming; also, hidden bury type structure can be adopted, the surface of the utility model can be covered with a pavement layer, such as modified asphalt layer, etc., so the whole bridge floor and the pavement can be both flat without seeing the seam. The utility model has the advantages that the driving can be stable and safe without bumping.

Description

Bridge expansion joint installation

The utility model relates to the device that uses in a kind of bridge construction, and bridge expansion joint installation especially that install and use on the bridge of speedway suits.

Expansion gap device commonly used both at home and abroad at present mainly contains two kinds, the one, the rubber plate apparatus, it is simple in structure, and cost is low, but does not have Telescopic because of its device itself, just be fixed between bridge plate and abutment during installation with expansion bolt, and expose the road surface and directly contact with wheel, in case bridge generation telescopic variation or long-term pressurized, deformation or fracture promptly take place in this device, even the damage perk, have a strong impact on traffic safety.The 2nd, hair is reined in the seam device, is exactly a kind of comparatively ideal steel work stretching device as the patent No. 95208450.3 " bridge expansion joint installation ", but because manufacture difficulty is big, costing an arm and a leg is difficult to promote.

The purpose of this utility model is to provide the bridge expansion joint installation that a kind of stroke is big, manufacturing is simple, easy for installation, traffic safety is steady, price is low.

The utility model is achieved in that bridge expansion joint installation is made up of clamped beam and stretching device, and stretching device is the middle extrusome that through hole is arranged, and connects into integral body by the clamped beam on extrusome and both sides, constitutes on the cast-in-place shrinkage joint that is fixed on reservation.

Fig. 1, structural representation of the present utility model.

Fig. 2, mounting structure schematic diagram of the present utility model.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Clamped beam (2) is an angle steel, can design, determine the specification of angle steel according to the different mounting methods of extrusome and the difference of bearing pressure, and on the soffit of angle steel the fixing fixing feet of ⊥ shape (1) of equidistant welding, make the height of the height of fixing feet (1), to avoid influencing the smooth of this device because of the ground injustice less than angle steel.

Extrusome (3) is made into by elastomeric material, and the cross section is that the centre has two through hole, and upper surface is two circular arcs that intersect, and soffit two corners also are the rectangle of circular arc, and the height of the height of extrusome (3) and fixing feet (1) is complementary.Intermediate throughholes also can be the above porous in single hole or 3 holes, and stroke is used single hole at 2 centimetres, uses diplopore for 2～5 centimetres, greater than 5 centimetres with 3 holes or porous.

The both sides of extrusome (3) are separately fixed on the clamped beam (2) on both sides, and make extrusome (3) and clamped beam (2) connect into integral body through vulcanizing treatment, this part is all made in factory.

During use, this bridge expansion joint installation is transported to the bridge construction job site, it directly is placed on the shrinkage joint of reserving between the bridge plate (7) and abutment (8) between bridge floor (6), abutment road surface (9), use concrete (4) cast to be fixed into one then.This mounting method is suitable on the less foot bridge of stroke.

Also can adopt buried mode, directly do not contact the pressure that is impacted with wheel little because of stretching device at this moment, the clamped beam (2) of available no fixing feet (1) ' (the also available clamped beam (2) that fixing feet (1) is arranged), after being fixed into one with concrete (4) cast, again in clamped beam (2) ' on squeeze into nailing or expansion bolt, cover supercrust such as modified asphalt layer (5) etc. above the device again at it, make whole bridge floor, road surface all equally smooth, cannot see the junction seam, as shown in Figure 2.

The utility model is compared with prior art: this apparatus structure is simple, makes simply, and price is low, all can Well install to the job site again in factory process, therefore easy to use and stroke is big. Because adopting buried side Method is installed, and makes smooth, the smooth steady safety of then driving a vehicle in road surface, the phenomenon of can not jolting. Has rubber slab The advantage that formula device and hair are strangled the seam device, especially suitable highway is promoted the use of.

Claims

1, a kind of bridge expansion joint installation is made up of clamped beam (2) and stretching device, it is characterized in that stretching device is the middle extrusome (3) that through hole is arranged, the clamped beam (2) on extrusome (3) and both sides connects into integral body, constitutes on the cast-in-place shrinkage joint that is fixed on reservation.

2, device according to claim 1 is characterized in that clamped beam (2) is an angle steel, the fixing fixing feet of ⊥ shape (1) of equidistant welding on the angle steel soffit, and fixing feet (1) aspect ratio angle steel is low; Extrusome (3) is made into by elastomeric material, and the cross section is that the centre has two through hole, and upper surface is two circular arcs that intersect, and soffit two corners also be the rectangle of circular arc, extrusome (3) highly with the matched of fixing feet (1); The both sides of extrusome (3) are separately fixed on the clamped beam (2) on both sides, and make extrusome (3) and clamped beam (2) connect into integral body through vulcanizing treatment, directly be placed on the shrinkage joint of reserving between the bridge plate (7) and abutment (8) between road surface (6), abutment road surface (9), use concrete (4) cast to be fixed into one then.

3, device according to claim 1, it is characterized in that clamped beam (2) ' be that angle steel and extrusome (3) sulfuration are fixed into one, on the shrinkage joint that directly is placed between road surface (6), abutment road surface (9), reserves between bridge plate (7) and the abutment (8), use concrete (4) cast to be fixed into one then, and in clamped beam (2) ' on squeeze into nailing or expansion bolt, and the device above cover modified asphalt layer (5) again.

4, device according to claim 1 is characterized in that extrusome (3) intermediate throughholes can be the above porous in single hole or 3 holes, and stroke is used single hole at 2 centimetres, uses diplopore for 2～5 centimetres, greater than 5 centimetres with 3 holes or porous.