CN115418938A - An expansion device combining two continuous seams and comb-tooth expansion joints - Google Patents

Abstract

The invention discloses a telescopic device combining two continuous seams and a comb-tooth-shaped expansion joint, which is characterized in that the telescopic device consists of two continuous seam movable reinforced concrete sliding plates, a suspension welding type anti-falling comb-tooth-shaped telescopic device, a sliding steel plate, a sliding nylon plate, a stainless steel waterproof and dustproof baffle, waterproof sealing paste, a drain pipe and a stainless steel water stop belt, wherein one continuous seam movable reinforced concrete sliding plate is arranged on one girder by the sliding steel plate, and the other continuous seam movable reinforced concrete sliding plate is arranged on the other girder by the sliding nylon plate; the steel plate and the nylon plate that slide set up on "the seam" type bent cap. Compared with the prior art, the invention has the advantages of simple structure, reduction of impact force when a vehicle passes through the expansion device, reduction of half of the number of vehicle jumping, stable and comfortable driving, further reduction of maintenance cost, solution of the technical problem of serious water leakage at the expansion joint of the bridge and great improvement of social and economic benefits.

Description

An expansion device combining two continuous seams and comb-tooth expansion joints

technical field

The invention relates to the technical field of bridge expansion devices, in particular to an expansion device combined with two continuous joints and a comb-shaped expansion joint.

Background technique

The top plane of the bridge cover girder is usually placed on two girders, and an expansion device is installed between the two girders. The type and specification of the installation is based on the thickness of the bridge pavement and the technical level of the expansion device at that time. When the thickness of the pavement layer is relatively thin, the design idea of "one divided into two" will be adopted to solve the requirement of large expansion and contraction. For example, in order to reduce the jumping of the car, the girders that are usually about 80 meters long are designed to be about 140 meters long. 12 cm, only the rubber plate type telescopic device can be used. The expansion and contraction amount of the commonly used rubber plate type expansion device is 80mm, only two 80mm types can be synthesized into a 160mm type, and the car jumping phenomenon is concentrated on one cover beam. In order to make the cover beam look more beautiful, a very large part of the cover beam height is placed in the girder structure on both sides. The cover beam only leaves a thin bottom surface, which shows that the cover beam is light and beautiful. The trapezoidal cover beam divides the original expansion joint into two expansion devices.

The two telescopic devices on the inverted trapezoidal cover beam of the prior art have waterproof, dustproof and anti-jump phenomena in the connection area between the girder and the cover beam. For example, the C-shaped steel single-slit expansion device has a loud jumping sound, and the impact of the car jumps Uncomfortable, the rubber waterstop is easy to be damaged and aged, the V-shaped mouth garbage accumulates, the water leakage is serious, and there are water leakage marks everywhere in the transverse section of the cover beam, not only the driving comfort is poor, the continuous seam structure is usually fixed at both ends, and the horizontal tension is large and easy to crack , the telescopic device has a short service life and high maintenance costs.

Contents of the invention

The purpose of the present invention is to design a kind of expansion device combining two continuous seams and comb-tooth expansion joints in view of the deficiencies in the prior art. Cooperating with the comb-shaped expansion joints for tensile and compression deformation, two reinforced concrete slides replace the original two C-shaped steel expansion devices and become two continuous joints, which completely solves the waterproof and dustproof of the area. A comb-shaped expansion device with large displacement is used between the continuous joints to connect the two continuous joints of reinforced concrete slides together, and cooperate with each other to stretch and compress deformation, optimizing the structure of two expansion devices on the "丄" type cover beam , Greatly improve the waterproof, dustproof and anti-jump phenomenon of the connection area between the girder and the cover beam, make the construction and manufacture of the telescopic device easier, improve the driving comfort, the service life of the telescopic device is longer, and the maintenance cost is lower.

The object of the present invention is achieved in this way: an expansion device combined with two continuous joints and a comb-shaped expansion joint, which is characterized in that two reinforced concrete slide plates are used to replace the original two C-shaped steel expansion devices and become two continuous joints , completely solved the waterproof and dustproof of the car jumping in this area. A telescopic device with a large displacement is set between two continuous seams, and the reinforced concrete slides with two continuous seams are connected together, that is to say, two continuous seams and two continuous seams are used. A comb-shaped telescopic device is connected together to cooperate with each other for stretching and compressing deformation. The telescopic device is composed of A continuous joint movable reinforced concrete sliding plate, B continuous joint movable reinforced concrete sliding plate, comb-shaped expansion device, sliding steel plate, sliding nylon plate and stainless steel waterstop. The comb-shaped expansion device is a cantilever The telescopic device anchored by welding or cantilever bolts, the movable comb-tooth plate and the fixed comb-tooth plate are respectively arranged on the movable reinforced concrete slide plate of the continuous joint A and the movable reinforced concrete slide plate of the continuous joint B; the movable reinforced concrete slide plate of the continuous joint A is composed of The sliding steel plate is set on the beam A; the movable reinforced concrete sliding plate of the B continuous joint is set on the beam B by the sliding nylon plate; the sliding steel plate and the sliding nylon plate are set on the "丄" type cover beam; The "丄" type cover beam is set on the column, and the two gaps between its two ends and the A beam and the B beam are respectively two bridge expansion joints; the A beam and the B beam are set on the "丄" type cover beam by the support Above; the stainless steel waterstop is set under the comb-shaped telescopic device, and its two ends are fixedly connected to the A continuous joint movable reinforced concrete slide and the B continuous joint movable reinforced concrete slide respectively.

A stainless steel waterproof and dustproof baffle plate and waterproof sealing paste are provided on the A continuous joint movable reinforced concrete slide plate and the B continuous joint active reinforced concrete slide plate.

The stainless steel waterstop is provided with a drainage plastic pipe.

Compared with the prior art, the present invention has an innovative continuous seam structure. It adopts a cantilever welding comb-shaped expansion device with one end fixed and one end sliding. The flatness prolongs the service life of the telescopic device and reduces the cost of renovation and maintenance. Bolt-anchored comb-shaped telescopic devices are installed near the anti-collision wall at both ends to provide operation space for the replacement of drainage pipes for maintenance and maintenance, which greatly improves the expansion of the bridge. Severe water leakage at the joints, garbage accumulation and falling, frequent car jumping and loud noises, etc., improve the stability and comfort of vehicle traffic, and the flatness of the telescopic device is improved, which greatly reduces the impact force when the vehicle passes through the telescopic device. Simple structure, all-round Dust blocking is the best dust-proof and efficient structure, the number of jumps is reduced by half, the driving is stable and comfortable, and the maintenance cost is further reduced. It better solves the technical problem of serious water leakage at bridge expansion joints and greatly improves social and economic benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention;

Figure 2 is a schematic diagram of the embodiment.

detailed description

Referring to Fig. 1, the present invention consists of a continuous seam movable reinforced concrete slide plate 1, a continuous seam movable reinforced concrete slide plate 2, a suspension welding type anti-drop comb tooth type telescopic device 3, a sliding steel plate 4, a sliding nylon plate 5, and stainless steel waterproof and dustproof Baffle plate 6, waterproof sealing paste 7, drainage plastic pipe 8 and stainless steel waterstop 9, the cantilever welding type anti-drop comb-teeth telescopic device 3 is a cantilever welding anchor comb-teeth telescopic device or a cantilever bolt anchor comb-teeth The telescopic device, the movable comb plate 31 and the fixed comb plate 32 are respectively arranged on the movable reinforced concrete slide plate 1 of the continuous joint A and the movable reinforced concrete slide plate 2 of the continuous joint B; the movable reinforced concrete slide plate 1 of the continuous joint A is The steel plate 4 is set on the A beam 13; the B continuous joint movable reinforced concrete slide plate 2 is set on the B beam 14 by the sliding nylon plate 5; the sliding steel plate 4 and the sliding nylon plate 5 are set on the "丄" On the cover beam 15; the "丄" type cover beam 15 is arranged on the column 16, and the gaps between its two ends and the A beam 13 and the B beam 14 are two bridge expansion joints 18; the A beam 13 and the B beam 14 is set on the "丄" type cover beam 15 by the support 17; the stainless steel waterstop 9 is set under the comb-shaped expansion device 3, and the two ends are respectively connected with the A continuous joint movable reinforced concrete slide 1 and the B continuous joint The movable reinforced concrete slide 2 is fixedly connected; the A continuous joint movable reinforced concrete slide 1 and the B continuous joint movable reinforced concrete slide 2 are provided with a stainless steel waterproof and dustproof baffle 6 and a waterproof sealing paste 7; the stainless steel waterstop 9 Be provided with drainage plastic pipe 8 on.

Taking the technical transformation of the C-shaped steel single-slit expansion device of the "丄" type cover beam as an example, the present invention is further described in detail, so as to improve the waterproof, dustproof and anti-jump phenomenon of the connecting area between the girder and the cover beam.

Example 1

Referring to Fig. 2, the present invention is installed and constructed according to the following steps:

(1) Cutting the top surface of the beam body and the reserved groove on the top surface of the cover beam

According to the size of the design drawings, the old telescopic device on the top of the beam and the old concrete on the 15th top of the cover beam should be chiseled out, the pre-embedded steel bars or steel plates should be kept as far as possible, and garbage and sundries should be removed. When the anchoring steel bars are insufficient, make up in time.

(2) Construction of leveling layer on the roof of the beam

After the old concrete on the cover beam 15 is chiseled out, the base surface is cleaned, the steel bars are arranged and corrected, and the distributed steel bars are laid, the leveling layer concrete can be poured. The new top surface must be flat, and the leveling concrete must be dense and full without gaps and cover slip Nylon board5.

(3) Construction of continuous joint movable reinforced concrete slide and comb-shaped telescopic device

Before laying the sliding steel plate 4, apply a layer of butter on the sliding nylon plate 5 to cover the sliding steel plate 4, and then lay all kinds of steel bars in the movable reinforced concrete sliding plate 1, as well as the stainless steel waterproof and dustproof baffle 6, and cantilever welding Comb plate telescopic device 3 and other components, finally place the stainless steel waterstop 9 and drainage plastic pipe 8, and when the inspection is correct, you can pour C40, fast concrete, vibrate densely, the surface is smooth, cover the plastic film for watering and curing , the traffic can be opened after the concrete strength is reached.

The above specific implementation is aimed at the optimized design of the structure of two telescopic devices on the inverted-shaped cover beam, optimizing the "two-connected and one-combed" joint type telescopic device, and combining the two telescopic devices on the original cover beam into one telescopic device. Only one jump sound is produced, so it feels more comfortable. Near the anti-collision walls at both ends, two small sections of bolts are set to anchor the comb-shaped plate, which is to provide working channels for replacing drain pipes and cleaning maintenance. The invention adopts a structure in which two steel plates are staggered with each other to prevent dust, so as to prevent dust in all directions and to prevent dust with high efficiency. The top surface of the original bridge expansion joints is made of solid reinforced concrete slides, which can effectively prevent the bridge deck rainwater and stone garbage from falling directly to the bridge expansion joints. Such bridge expansion joints are waterproof, dustproof, and jump-proof, with a simple and efficient structure. Improve the waterproof, dustproof and anti-jump phenomenon of the connection area between the girder and the cover beam, make the construction and manufacture of the telescopic device easier, improve driving comfort, extend the service life of the telescopic device, and lower maintenance costs.

The invention adopts the hanging welding type anti-drop comb-teeth type telescopic device which happens to be seated on the top plane of the cover beam, and the movable reinforced concrete slide plates on both sides are pressed tightly on the sliding high-grade nylon plate to effectively block the outflow of water. To have the function of the concave water collection tank, in order to drain water, only need to set the drainage plastic pipe at the low-end side anti-collision wall and draw it outward, so that there is no water accumulation under the hanging welding comb-shaped telescopic device all year round.

The above specific implementation is only to further illustrate the present invention, and is not used to limit the patent of the present invention. All equivalent implementations of the present invention should be included in the scope of claims of the patent of the present invention.

Claims (3)

1. A kind of expansion device that two continuous seams combine with expansion joint of comb-tooth type, including the expansion device of comb-tooth type, characterized by that this expansion device is by the expansion device of comb-tooth type and A continuous seam movable reinforced concrete slide and B continuous seam movable reinforced concrete slide make up, the expansion device of said comb-tooth type is the expansion device that the cantilever welds the anchor or cantilever bolt anchor, its activity comb tooth plate and fixed comb tooth plate is set up on A continuous seam movable reinforced concrete slide and B continuous seam movable reinforced concrete slide respectively; the A continuous seam movable reinforced concrete sliding plate is arranged on the A crossbeam through a sliding steel plate; the movable reinforced concrete sliding plate of the continuous seam B is arranged on the beam B through a sliding nylon plate; the sliding steel plate and the sliding nylon plate are arranged on the cover beam in the shape of an 'seam-type'; the 'gap-spliced' type bent cap is arranged on the upright post, and two bridge expansion joints are respectively arranged between the two ends of the 'gap-spliced' type bent cap and the A girder and between the two ends of the 'gap-spliced' type bent cap and the B girder; the girder A and the girder B are arranged on the 'notch-type bent cap beam' through a support; and a stainless steel water stop belt is arranged below the comb-tooth type expansion device, and two ends of the stainless steel water stop belt are fixedly connected with the A continuous seam movable reinforced concrete sliding plate and the B continuous seam movable reinforced concrete sliding plate respectively.

2. The expansion device of the combination of two continuous slots and a comb-tooth type expansion joint as claimed in claim 1, wherein the sliding plates of movable reinforced concrete for A continuous slot and B continuous slot are provided with waterproof and dustproof stainless steel baffles and waterproof sealing paste.

3. The expansion device of claim 1, wherein a drainage plastic tube is provided on the stainless steel water stop.

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