CN202073033U

CN202073033U - Concrete seam expansion/constriction apparatus

Info

Publication number: CN202073033U
Application number: CN2011200922843U
Authority: CN
Inventors: 沈福昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-01
Filing date: 2011-04-01
Publication date: 2011-12-14
Anticipated expiration: 2021-04-01

Abstract

The utility model discloses a concrete seam expansion/constriction apparatus, which comprises a plurality of metallic plates distributed in a concrete seam with intervals, a plurality of elastic plates disposed every two adjacent metallic plates, and a plurality of crossbeams passing through the metallic plates with one end in fixed connection with the concrete on one side of the seam and the other end in slip connection with the concrete on the other side of the seam; two metallic plates on the outside of the seam are respectively fixed with the concrete on both sides of the seam. the cross section of the elastic plate is preferably flanged circular arc shaped; the elastic plate is fixed on the metallic plate by the flange on one side; the crossbeam is a hollow square steel; crossbeam bushings with the size and shape matching with the crossbeams are disposed in the concrete on one side of the seam; one end of each crossbeam is disposed in a corresponding crossbeam bushing to realize the connection with the concrete on one side. The apparatus of the utility model achieves the advantages of high strength, simple structure, mounting and construction convenience, and long service life; and is suitable for popularizing and applying in building facilities including bridges, highway pavements and trestle.

Description

The concrete joint stretching device

Technical field

The utility model relates to a kind of stretching device, particularly relate in the concrete joint of building facilitiess such as bridge, express highway pavement and viaduct, install and use with the flexible stretching device of concrete.

Background technology

As everyone knows, on the bridge floor of the bridge made from concrete or on the road surface of highway,, often between every section concrete member of bridge floor or highway, leave seam in order to prevent to expand with heat and contract with cold.In the prior art, the stretching device that connects seam is generally the rubber stretching device, its structure is divided into two classes: a class is that the rubber extensible member in the stretching device is connected with seam by secure component, as Chinese utility model patent ZL 97244577.3, name is called the disclosed a kind of structure of bridge expansion joint installation, it is made up of clamped beam and stretching device, stretching device is the middle extrusome that through hole is arranged, the clamped beam on extrusome and both sides connects into integral body, constitute on the cast-in-place shrinkage joint that is fixed on reservation, described clamped beam is an angle steel, the equidistant fixing feet that is welded with on the angle steel soffit, fixing feet aspect ratio angle steel is low, extrusome is made by elastomeric material, the cross section is that the centre has two through hole, upper surface is two circular arcs that intersect, soffit two corners also are the rectangle of circular arc, the matched of extrusome height and fixing feet, the dual-side of extrusome is separately fixed on the clamped beam on both sides, and make extrusome and clamped beam connect into integral body through vulcanizing treatment, be placed in the concrete joint then.Another kind of is that rubber extensible member in the stretching device directly is connected with seam by cementing agent, and described cementing agent adopts epoxy resin usually.The concrete joint stretching device of these structures, on the one hand, because the rubber extensible member usually and generation CONTACT WITH FRICTION such as vehicle and being damaged easily, on the other hand, because rubber extensible member and cementing agent easily wear out and come off, and cause application life shorter, therefore above-mentioned stretching device ubiquity intensity of the prior art is low, complex structure, the defective that application life is short.

Summary of the invention

The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of long service life is provided, and is simple in structure, and the concrete joint stretching device that intensity is high is installed and easy construction.

For solving the problems of the technologies described above, the utility model adopts so a kind of concrete joint stretching device, it comprises that some block gaps distribute places metal sheet in the concrete joint, several are arranged on the elastic plate between adjacent two metal sheets, and the some crossbeams that run through metal sheet that an end is fixedlyed connected with seam one side concrete, the other end and offside concrete are slidingly connected; Two metal sheets that are positioned at the described seam outside are fixedlyed connected with the concrete of seam both sides respectively.

In the utility model, the cross section of described elastic plate preferably is flanging circular arc, and described elastic plate is fixedly mounted on the described metal sheet by the flanging of one side; Described crossbeam is a hollow square steel; Size and shape and the suitable crossbeam sleeve pipe of described crossbeam are set, thereby an end of described crossbeam places the concrete that constitutes in this crossbeam sleeve pipe with a side to be slidingly connected in a side concrete.

Described metal sheet of the present utility model is preferably the steel plate of thickness between 5～20 millimeters, and described elastic plate is preferably the latch plate of thickness between 2～6 millimeters.

After adopting such structure, because stretching device of the present utility model only is made of number of metal plate, elastic plate and crossbeam, thereby its intensity height not only, simple in structure, install and easy construction, and owing to avoided rubber extensible member used in the prior art, thereby the utility model is compared with prior art more durable in use, longer service life.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.

Fig. 1 is a kind of structural representation of the utility model concrete joint stretching device.

Fig. 2 is a kind of structural representation of metal sheet in the utility model.

Fig. 3 is a kind of structural representation of elastic plate in the utility model.

The specific embodiment

Referring to Fig. 1 to a kind of concrete joint stretching device shown in Figure 3, it comprises that some block gaps distribute places metal sheet 1 in the concrete joint 4, several are arranged on the elastic plate 2 between adjacent two metal sheets 1, and the some crossbeams 3 that run through metal sheet 1 that an end is fixedlyed connected with seam 4 one side concrete 5, the other end and offside concrete 5 are slidingly connected; Two metal sheets 1 that are positioned at described seam 4 outsides are fixedlyed connected with the concrete 5 of seam 4 both sides respectively.When construction, as shown in Figure 1, two metal sheets 1 in described seam 4 outsides directly can be cast in the concrete 5 of seam 4 both sides; And an end of crossbeam 3 directly is cast in the concrete 5 of seam 4 one sides.

Referring to Fig. 1 to Fig. 3, in the utility model, the cross section of described elastic plate 2 preferably is flanging circular arc, described elastic plate 2 is fixedly mounted on the described metal sheet 1 by the flanging 2-1 of one side, when construction, a side edgefold 2-1 of elastic plate 2 can be fixedly mounted on the described metal sheet 1 by rivet 2-2, perhaps directly be welded on the described metal sheet 1, and opposite side needn't be fixed, and is free end; As shown in Figure 2, preferably fixedly mount two described elastic plates 2 respectively at the upper/lower terminal of described metal sheet 1, elastic plate 2 also can be one whole rectangular certainly, and two whole pieces are laid on the upper/lower terminal of metal sheet 1 respectively then, and are not shown in the figures; Described crossbeam 3 is preferably hollow square steel, also can adopt other structure certainly, as i iron etc.; The suitable crossbeam sleeve pipe 6 of size and shape and described crossbeam 3 is set in a side concrete 5, and the concrete 5 of formations and a side is slidingly connected in this crossbeam sleeve pipe 6 thereby an end of described crossbeam 3 places.

Described metal sheet 1 is preferably the steel plate of thickness between 5～20 millimeters, described elastic plate 2 is preferably the latch plate of thickness between 2～6 millimeters, the thickness of certain described metal sheet 1 and elastic plate 2 can be chosen as thicker or thinner according to the developed width of seam 4, and not within above-mentioned range of choice.As shown in Figure 2, on described metal sheet 1, offer some through hole 1-1, for described crossbeam 3 run through by.In addition, parts such as above-mentioned metal sheet 1, elastic plate 2 and crossbeam 3 all can adopt stainless steel, or at its surface-coated anticorrosive paint.

The utility model process is on probation, and its intensity height is simple in structure, installs and easy construction, and is durable in use, obtained good effect.

Claims

1. concrete joint stretching device, it is characterized in that: this stretching device comprises that some block gaps distribute places metal sheet (1) in the concrete joint (4), several are arranged on the elastic plate (2) between adjacent two metal sheets (1), and the some crossbeams (3) that run through metal sheet (1) that an end is fixedlyed connected with seam (4) one side concrete (5), the other end and offside concrete (5) are slidingly connected; Two metal sheets (1) that are positioned at described seam (4) outside are fixedlyed connected with the concrete (5) of seam (4) both sides respectively.

2. concrete joint stretching device according to claim 1 is characterized in that: the cross section of described elastic plate (2) is flanging circular arc, and described elastic plate (2) is fixedly mounted on the described metal sheet (1) by the flanging (2-1) of one side; Described crossbeam (3) is a hollow square steel; Size and shape and the suitable crossbeam sleeve pipe (6) of described crossbeam (3) are set in a side concrete (5), and an end of described crossbeam (3) places this crossbeam sleeve pipe (6) thereby the concrete (5) of an interior formation and a side is slidingly connected.

3. concrete joint stretching device according to claim 1 and 2 is characterized in that: described metal sheet (1) is the steel plate of thickness between 5～20 millimeters, and described elastic plate (2) is the latch plate of thickness between 2～6 millimeters.