CN2560670Y

CN2560670Y - Assembled comb type brdige stretching apparatus

Info

Publication number: CN2560670Y
Application number: CN 02264872
Authority: CN
Inventors: 徐斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-18
Filing date: 2002-06-18
Publication date: 2003-07-16
Anticipated expiration: 2012-06-18

Abstract

A packaged type and comb type bridge telescoping device is widely used in a telescoping device with the telescoping amount of 20-150mm, which is especially installed and applied on high-grade highway grand bridges, cross-ocean bridges and urban viaducts with the telescoping amount of more than 160mm, and is composed of rubber plates, which are fixedly connected at both sides of the expansion joints, and an integrity, which is formed by the connection of the pecten and the anchor fitting; the pecten comprises fixed pectens and movable pectens, which are assorted with each other and are provided with racks; the anchor fitting is a bearing bracket, which is formed by assembly of vertical and horizontal bearing plates and is fixed on the embedded reinforcement on piers and beams, and the fixed pectens, the movable pectens and the bearing bracket are integrated together with fasteners. The telescopic activity is completely finished through movable pectens and no vertical transition clearance is provided, so that the device can operate smoothly and comfortably. The wearing parts of the pectens can be dismantled, exchanged ad maintained easily and conveniently with low cost, and the anchor device has high overall strength and strong rigidity, can endure great loading impact force, is not vulnerable and has long service life and small reserved slot depth, so as to reduce the cost and construction difficulty of bridges and eliminate unsafe hidden troubles.

Description

Assemble comb-type bridge extension joint

Technical field

The utility model relates to a kind of important device of using in road, bridge construction, be widely used in stroke and be in the stretching device between the 20-150 millimeter, the assemble comb-type bridge extension joint that suitable especially stroke is installed and used on high-grade highway grand bridge, bridge spanning the sea and the urban viaduct more than 160 millimeters.

Background technology

For satisfying the requirement of bridge deformation, high-grade highway and bridge are when building, all need stretching device to be set at seam crossing, development along with communication, requirement to comfortableness, the safety of driving, reliability is more and more higher, existing, traditional hair is reined in class and the seamless stretching device of elasticity, all can not satisfy the requirement of high-grade highway and bridge.

The patent No. 97220451.2 " big displacement quantity bridge expansion joint installation " also provides a kind of hair to rein in the class expansion gap device, though through improving, but its longitudinal extension gap is bigger, jumping the car phenomenon still can't overcome, its preformed groove degree of depth is bigger simultaneously, has increased the difficulty of construction and the cost of bridge itself, in case structural member damages, also need fluid concrete again, maintenance difficulty is big, expense is high.

Existing France and Switzerland's mug(unit of measure) crust types of steel comb plate stretching device, though be to solve the ideal device of jumping the car problem, the part but it also comes with some shortcomings, just determined its normal phase to depress by its structure in vehicle unequally loaded adding, rubber tile distortion under the comb tooth plate is also inhomogeneous, and loosening phenomenon easily takes place.Because of the shrinkage joint is the weak location of bridge, and the power that acts on the shrinkage joint is diversified, has not smoothly slightly, and it will be born higher impact force, and has quickened the damage of stretching device thus again.Its anchor device does not have firm, solid installation basis simultaneously, the bulk strength deficiency, also yielding under the repeated stock of vehicle-mounted load, damage, had a strong impact on its application life, this structure also is not suitable for stroke and uses on the expansion gap device more than 160 millimeters.

The patent No. 01203564.5 " is pulled body slot method bridge expansion joint installation ", and a kind of steel comb class expansion gap device is provided, and on the distortion supporting seat, the shrinkage joint plate that adopts slot to be connected with bridge floor is housed, smooth-going when vehicular traffic is crossed, no kick phenomenon.But it exists the defective of steel comb class expansion gap device equally.

Two above-mentioned patent structures also are not suitable for using on the bigger expansion gap device of stroke.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of assemble comb-type bridge extension joint is provided, easily makes installation, low, easy to maintenance, comfortable, the safety of driving of cost, the scope of application is wide, supporting capacity is strong, long service life.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: assemble comb-type bridge extension joint, be included in the fixedly connected rubber tile in both sides, shrinkage joint, and form by the whole institute that pecten and anchor device connect into, described pecten is made of the fixedly pecten of working in coordination, have tooth bar, movable pecten, the frame support bracket that described anchor device is combined into by longitudinal and transverse base plate, be fixed on the embedded bar of abutment and Liang Tishang, and fixedly pecten, movable pecten and frame support bracket link into an integrated entity by securing member.

Compared with prior art, advantage of the present utility model is: 1. because of having adopted movable pecten, the fixing structure of pecten, stretching motion is finished by movable pecten fully, there is not vertical transition gap, avoided jumping car phenomenon, thereby it is smooth-going, comfortable that vehicle is crossed, no kick and noise.

2. the most flimsy pecten is installed on the surface at shrinkage joint in the stretching device, as long as the just detachable transposing of loose bolts, and change rapid, easy to maintenance, expense is low.

3. weld the frame support bracket that is fixed into by longitudinal and transverse base plate, solid welding is on the abutment and embedded bar at two ends, bridge expanssion joint gap respectively, be connected firmly with the anchor device of Liang Tishang, solid, strengthened the bulk strength of anchor device, there are powerful firm embedded bar system and frame support bracket to do to install the basis again, its rigidity is improved greatly, therefore can bear very big vehicle-mounted impact force, and not fragile.

Because of movable pecten, fixedly the height of pecten is low, can reduce the preformed groove degree of depth greatly, reduces the cost and the difficulty of construction of bridge construction, increased the intensity of bridge construction greatly, thereby eliminated hidden danger.

5. comb shape steel plate and frame support bracket are closely twisted admittedly together simultaneously, and its intensity all is designed to through supporting, all can satisfy the requirement of single unit system intensity, thereby safe in utilization, reliable.

6. the expansion gap device of this structure does not have the concrete of changeover portion, and upper surface directly connects friendship by smooth steel plate and paving layer, and the device of having avoided other types of devices to cause because of the changeover portion concrete is broken damages phenomenon.

7. because of the settlement of soft foundation and the damaged reason of layer of mating formation, road surface, bridge floor need frequent maintenance, repairing, and this repairing paves, often because of newly the paving layer and the concrete discrepancy in elevation of changeover portion cause new out-of-flatness.This patent structure can maintain an equal level itself and flexible pavement with the method for the dismounting pecten before paving or the back transposing differing heights pecten that paves, remedy the jumping car phenomenon because of the generation that is uneven, and has avoided stretching device because of the be hit destruction of power of injustice again.

8. be the pecten that takes in sail parallel mobile resistance when flexible,, also be close to and be fixed with the slide plate that is made into by corrosion resistant plate at the fixing soffit of pecten.

9. fixedly also be fixed with the horizontal support plate under the tooth bar of pecten and play booster action, prevent the distortion of tooth portion.So the suitable especially stroke of this structure is bigger, uses in the bridge extension joint more than 160 millimeters.

Description of drawings

Fig. 1. the utility model structural representation.

Fig. 2. the structure support plate schematic diagram.

Fig. 3. the structural representation that embedded bar is connected with base plate.

Fig. 4. the A-A view of Fig. 3.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Horizontal support plate

6,18, on the strip of 1～6 through hole 2 is arranged, through hole 2 corresponding positions in lower surface are welded with nut 9, through hole 2 numbers are by its length decision.

Vertical base plate

11,17 is strip.

Both sides at the shrinkage joint are lined up one group with two reinforcing bars 13 of band level, anticracking net muscle 12 are parallel, are arranged in order, be embedded in the beam body 16, and clamping one

horizontal support plate

6,18 betwixt, it is weldingly fixed on the two sides of reinforcing bar 13.Because embedded bar 13 causes dislocation, can add reinforcing bar

horizontal support plate

6,18 and embedded bar 13 welding are fixed into one in the construction, remedy.

Frame support bracket

8,14, be fixed into sash shape by 11,17,6,18 welding of the longitudinal and transverse base plate more than 2, two

frame support brackets

8,14, be weldingly fixed on respectively on the beam body or abutment at clearance of expansion rail two ends, and be welded on the embedded bar 13 by the horizontal support plate on it 6,18, with strong concrete 15 cast preformed grooves,, embedded bar 13 and two

frame support brackets

8,14 are poured into an integrated entity up to concordant with the upper surface of

frame support bracket

8,14.

Rubber tile 10 for U-shaped has waterproof and dustproof, Telescopic, is fixed on bolt, pressing plate on the vertical base plate 11 of two frame support brackets, 8,14 1 ends, and its width is determined that by stroke length is wide identical with bridge.

Movable pecten 1, fixedly pecten 7 shapes are corresponding, and a side is for there being through hole 2, and the corresponding monoblock cover plate of the through hole on through hole 2 and the

horizontal support plate

6,18 2, and a side is a tooth bar 4,5 corresponding, that work in coordination.

For increasing the fixedly intensity of pecten 7 upper racks 5, fixedly also has through hole 2 on pecten 7 tooth bar 5 separately, corresponding with the through hole 2 on the horizontal support plate 6, tooth bar 5 soffits are the horizontal support plate 6 of connecting band nut 9 also, and promptly the horizontal support plate 6 on the frame support bracket 14 has double action, makes full use of.Movable pecten 1 strides across clearance of expansion rail, its end tooth bar 4 extend on the fixing pecten 7 broach at interval in, guarantee when the maximum collapse amount, vertical 11 of the base plates of the broach root on the movable pecten 1 and the termination of frame support bracket 14 have certain distance, enough contact surfaces are arranged, thereby make movable pecten 1 that enough carrying resistance to deformations, the intensity of impact be arranged.

Fixedly pecten 7 has had the effect of guiding and protection activity pecten 1.

For making tooth bar 4 moving resistances on the movable pecten 1 little, fixing pecten 7 times, be close to the slide plate 3 that one deck is made by corrosion resistant plate, have on the slide plate 3 with fixing pecten 7 to be connected corresponding through hole 2.

At last with movable pecten 1, fixedly pecten 7 is placed on two

frame support brackets

8,14, pass movable pecten 1, the fixedly through hole 2 on pecten 7, the slide plate 3 and the through hole 2 on the

frame support bracket

8,14 respectively with the securing member hexagon socket head cap screw, be screwed in the nut 9 on the

horizontal support plate

6,18, tighten fixing in aggregatesly, just can use.

When bridge varied with temperature, the tooth bar 4 on the movable pecten 1 just slided on slide plate 3 when dilatation, stretched into or withdrawed between the broach on the fixing pecten 7.

Claims

1. assemble comb-type bridge extension joint, be included in the fixedly connected rubber tiles in both sides, shrinkage joint (10), and form by the whole institute that pecten and anchor device connect into, it is characterized in that described pecten is by working in coordination, have tooth bar (4), (5) fixedly pecten (7), movable pecten (1) constitutes, described anchor device is by vertical, horizontal support plate (11), (17), (6), (18) frame support bracket that is combined into (14), (8), be fixed on the embedded bar (13) on abutment and the beam body (16), and by the fixing pecten (7) of securing member, movable pecten (1) and frame support bracket (14), (8) link into an integrated entity.

2. device according to claim 1, it is characterized in that horizontal support plate (6), (18) on the strip of 1～6 through hole 2 is arranged, lower surface through hole (2) corresponding position is welded with nut (9), through hole (2) number is by its length decision, and vertical base plate (11), (17) are strip.

3. device according to claim 1, it is characterized in that both sides at the shrinkage joint, to line up one group with two reinforcing bars (13) of level, anticracking net muscle (12) are parallel, be arranged in order, be embedded in the beam body (16), and clamping one horizontal support plate (6), (18) betwixt, it is weldingly fixed on the two sides of reinforcing bar (13).

4. device according to claim 1, it is characterized in that frame support bracket (8), (14), by indulging more than 2, horizontal support plate (11), (17), (6), (18) welding is fixed into sash shape, two frame support brackets (8), (14), be weldingly fixed on respectively on the beam body or abutment at clearance of expansion rail two ends, by the horizontal support plate (6) on it, (18) be welded on the embedded bar (13), with strong concrete (15) cast preformed groove, up to and frame support bracket (8), (14) upper surface is concordant, makes embedded bar (13) and two frame support brackets (8), (14) pour into an integrated entity.

5. device according to claim 1, it is characterized in that movable pecten (1), fixedly pecten (7) shape is corresponding, one side is for there being through hole (2), and the corresponding monoblock cover plate of through hole (2) on through hole (2) and horizontal support plate (6), (18), a side is tooth bar (4), (5) corresponding, that work in coordination.

6. device according to claim 1 or 5 is characterized in that fixedly being close to the slide plate (3) that one deck is made by corrosion resistant plate under the pecten (7), has on the slide plate (3) with fixing pecten (7) to be connected corresponding through hole (2).

7. install according to claim 1 or 5, it is characterized in that fixedly pecten (7) tooth bar (5) is separately gone up through hole (2) in addition, soffit is the horizontal support plate (6) of connecting band nut (9) also.

8. device according to claim 1 is characterized in that rubber tile (10) is fixed on the vertical base plate (11) of two frame support brackets (8), (14) one ends with bolt, pressing plate.

9. device according to claim 1, it is characterized in that securing member is a hexagon socket head cap screw, pass movable pecten (1), the fixing through hole (2) on the through hole (2) on pecten (7), the slide plate (3) and frame support bracket (8), (14) respectively, be screwed in the nut (9) on horizontal support plate (6), (18), tighten fixing in aggregates.