WO2009026807A1

WO2009026807A1 - An embedded bridge expansion device

Info

Publication number: WO2009026807A1
Application number: PCT/CN2008/071521
Authority: WO
Inventors: Zhiyan Pan
Original assignee: Zhiyan Pan
Priority date: 2007-08-27
Filing date: 2008-07-02
Publication date: 2009-03-05
Also published as: CN101158144B; CN101158144A

Abstract

An embedded bridge joint device includes an elastic board (1). A drain groove (2) is set in or near the middle of the board's back side. The top of the board is set with waterspouts (3) communicated with the drain groove (2).

Description

Instructions Implantable bridge deck continuous device Technical field

The present invention relates to a device for a bridge, and more particularly to a bridge deck continuous device embedded in a bridge deck. Background technique

In the simple-supported bridge, the structure of the upper structure bridge deck is one of the important aspects that affect the safety and service life of the bridge. In the past, the structure of continuous bridge reinforcement was continuously added to strengthen the structure of the bridge continuous. If the bridge is long, several consecutive bridge decks are regarded as a whole, and a telescopic continuous device is arranged between adjacent ones. Although this can increase the structural strength of the continuous bridge deck, the bridge deck will be more prone to cracks due to thermal expansion and contraction, etc., causing rainwater to seep onto the cover beam below the bridge deck. And because the corner of the simply supported beam will inevitably produce a corner effect under the action of live load and gradient temperature, the continuous part of the bridge deck will be repeatedly pulled, and it will definitely crack in the long run, which will cause the bridge deck rain to penetrate along the crack. According to the survey, more than 80% of the cover beams are exposed to such water, and the rainwater seeps off the top surface of the beam and mixes with the dust in the air and moisture to form mud, which causes the water to be stored on the top surface of the cover beam for a long time. Gradually invading the side of the cover beam greatly reduces the durability of the cover beam, thereby affecting the safety of the entire bridge structure. In addition, due to the influence of construction technology and external conditions, the continuous part of the bridge deck is often very easy to damage. About 20% of the bridge deck needs to be recasted after 2 years of opening, which is time-consuming and time-consuming. It is a great inconvenience. Summary of the invention

The technical problem to be solved by the present invention is to provide an implantable bridge deck continuous device capable of enhancing the structural strength at the continuous bridge deck and improving the safety and service life of the bridge. To this end, the present invention adopts the following technical solution: It comprises a plate made of an elastic material, and a drainage groove is provided on the back of the middle or near the middle portion of the plate, and the water discharge port communicating with the drainage groove is opened on the plate. Due to the adoption of the technical solution of the present invention, the present invention can It can be pre-buried and installed in the continuous part of the adjacent beam body before pouring the concrete leveling layer of the bridge deck. When pouring concrete, it can be used as the bottom mold for pouring, preventing the concrete slurry from infiltrating, and no additional installation of the bottom mold is needed. After the completion of the deck asphalt layer paving, the device is not easily damaged due to the tensile and bending resistance of the elastic plate itself, the expansion and contraction due to temperature and the cornering effect due to the live load. In the drainage groove on the back of the elastic plate, even if cracks occur in the bridge surface, the rainwater that leaks out can be discharged from both sides of the bridge in time, which helps to avoid the water damage of the asphalt layer on the bridge deck, and also eliminates the rain on the cover beam. The problem of infringement enhances the durability of the cover beam and ensures the safety of the bridge structure. DRAWINGS

1 is a schematic view showing the structure of an embodiment of the present invention when it is implanted in a bridge deck.

2 is a top plan view of an embodiment of the present invention.

Figure 3 is an enlarged view of the present invention in Figure 1. detailed description

Refer to the attached drawings. The present invention comprises a plate 1 made of an elastic material, and a drain groove 2 is provided on the back side of the plate in the middle or near the middle portion, and the plate is provided with a water discharge port 3 communicating with the drain groove.

As shown in Fig. 1, the plate 1 is placed on the upper surface of the adjacent beam bodies 101 and 102, and the drain groove 2 is in the gap between the beam bodies 101 and 102. Reference numeral 103 is a bridge deck concrete to which the present invention is implanted. Reference numeral 105 is a conventional bridge deck pavement rebar or reinforcing mesh.

As shown in FIG. 2, the drain groove 2 extends out of the panel to the side of the panel 1. In the present embodiment, the upper portion of the drain groove extension is closed, and reference numeral 104 is a bridge guardrail, and the drain groove 2 can extend to the side of the guard rail. Leak the rainwater.

As shown in Figures 1 and 3, the surface of the plate is gradually recessed toward the water outlet, which facilitates the discharge of rainwater that has leaked from the crack at the continuous bridge deck. In this embodiment, the surface of the plate is coated with a water-permeable cloth 4 covering at least the water outlet, so that the bridge construction after the invention can be more conveniently implanted, and the water-permeable cloth 4 is constructed as long as the water can seep and fall. A cloth that cannot be oozing out of concrete slurry, such as geotextiles. In the present embodiment, as shown in FIGS. 1, 2, and 3, the reinforcing plate 5 is fixedly disposed in the plate; the reinforcing bar includes a penetrating from one side of the longitudinal direction of the bridge deck and is worn from the other side. The reinforcing steel is extruded, and the portion of the reinforcing steel penetrating from one side and passing out from the other side is bent upward 51 and has a welded portion 52 welded to the deck pavement reinforcing steel or reinforcing bar 105. In this way, the invention can be perfectly connected with the bridge deck steel mesh to form an overall space structure, further ensuring the continuity of the bridge deck continuous and paving concrete, enhancing the bearing capacity of the beam plate due to temperature and the live load. The ability to withstand the stress caused by the corner effect of the end of the beam plate reduces the degree of tension caused by the concrete.

In this embodiment, the plate and the drain groove are made of rubber and cast integrally or plastic and cast as one body, which is more convenient to manufacture. The steel bars 5 can be buried and poured together at the same time during pouring.

The plates and drains can also be made of different materials.

Claims

Claim

1. An implantable bridge deck continuous device, characterized in that it comprises a plate made of an elastic material, and a drain groove is provided on the back of the plate in the middle or near the middle portion, and the plate is open to communicate with the drain groove. Falling into the water.

2. The implantable bridge deck continuous device of claim 1 wherein the surface of the plate is gradually recessed toward the water outlet.

The implantable bridge deck continuous device according to claim 1 or 2, wherein the surface of the plate is coated with a water permeable cloth covering at least the water outlet.

The implantable bridge deck continuous device according to claim 1 or 2, wherein the plate is fixed with reinforcing steel bars; the reinforcing bars include penetrating from one side of the bridge deck length direction and Reinforcing steel from the other side.

5. The implantable bridge deck continuous device according to claim 4, wherein the portion of the reinforcing bar penetrating from one side and passing out from the other side is bent upward and has a bridge deck Welded welded steel or welded steel mesh welded sections.

6. An implantable bridge deck continuous device according to claim 1 or 2, wherein the plate and the drain are rubbered and cast integrally or plastic and cast into one.