Top surface water storage device in maintenance stage of prefabricated box girder

Abstract

The utility model discloses a top surface water storage device in the maintenance stage of a prefabricated box girder, and belongs to the technical field of prefabricated box girder processing and maintenance devices. The first reinforcing steel bar row and the second reinforcing steel bar row are arranged on the top of the prefabricated box girder close to the edge, the first reinforcing steel bar row is arranged in the length direction of the prefabricated box girder, and the second reinforcing steel bar row is arranged in the width direction of the prefabricated box girder; a rectangular area defined by the first steel bar row and the second steel bar row is a pouring area; a strip-shaped water bag filled with water is arranged at the top of the prefabricated box girder; the strip-shaped water bag is made of a deformable flexible material; the strip-shaped water bags form a rectangular ring around the pouring area; two opposite sides of the rectangular ring are respectively arranged on the outer side of the first reinforcing steel bar row, and the other two opposite sides of the rectangular ring are respectively arranged against the second reinforcing steel bar row; the utility model effectively solves the problems that the labor cost is high, the sealing performance is poor and the cofferdam is easily influenced by embedded parts when the cofferdam is arranged on the prefabricated box girder at present.

Description

Technical Field

[0001] This utility model relates to the technical field of precast box girder processing and maintenance devices, specifically to a top surface water storage device for precast box girder during the maintenance stage. Background Technology

[0002] After pouring the top of the precast box girder, in order to prevent shrinkage cracks from forming on the concrete surface due to excessive moisture evaporation and to improve the strength and durability of the concrete, a water storage area needs to be set up in the pouring area to provide continuous moisture retention and curing. Currently, most of the methods for setting up this water storage area are to build temporary cofferdams using structures such as wooden boards, steel plates, sandbags, or rubber strips to form a closed water storage area. However, cofferdams built using the above structures are not only costly in terms of labor, but also generally have poor sealing performance and are prone to interference with the pre-embedded steel bars and other structures on the top of the box girder, further increasing the difficulty of setting up. This is the main problem that needs to be solved at present. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a top surface water storage device for the curing stage of precast box girders, so as to solve the problems of high labor costs, poor sealing and susceptibility to the influence of embedded parts when setting up cofferdams on precast box girders.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] A top surface water storage device for precast box girder during the curing stage; it includes two sets of first and second reinforcing bars respectively arranged near the edge of the top of the precast box girder. The first reinforcing bar is arranged along the length of the precast box girder, and the second reinforcing bar is arranged along the width of the precast box girder; the rectangular area enclosed by the first and second reinforcing bar rows is the casting area; a strip-shaped water bag filled with water is set on the top of the precast box girder; the strip-shaped water bag is made of deformable flexible material; the strip-shaped water bag forms a rectangular ring around the casting area; two opposite sides of the rectangular ring are respectively set on the outside of the first reinforcing bar row, and the other two opposite sides are respectively set against the second reinforcing bar row.

[0006] Preferably, there is at least one strip-shaped water bag, which is detachably connected end to end; an inlet and an outlet are respectively provided at the head and tail of the strip-shaped water bag.

[0007] Furthermore, the head and tail of the strip-shaped water bag are provided with corresponding extension strips; the extension strips are provided with matching male and female buckles; the ends of the strip-shaped water bag are detachably connected by the male and female buckles.

[0008] Furthermore, several extension strips are provided along the length of the head and tail of the strip-shaped water bag, and the length between two adjacent extension strips is not less than 30cm.

[0009] Furthermore, the head and tail of the strip-shaped water bag are stacked together; an auxiliary water bag is also set at the position where the head and tail of the strip-shaped water bag overlap.

[0010] The beneficial effects of this utility model are:

[0011] This utility model discloses a structure that uses strip-shaped water bags as a moisture-retaining cofferdam on top of a precast box girder. The flexible strip-shaped water bags replace traditional rigid cofferdam materials, significantly simplifying the installation process and reducing labor costs. The detachable connection design of the water bags allows for reuse, reducing material waste and long-term maintenance costs. They can tightly fit the reinforcing steel bars and the surface of the beam, avoiding leakage problems caused by gaps in traditional cofferdams. The flexible strip-shaped water bags can also adjust their shape according to the actual environment, avoiding interference with the structure on top of the box girder. They support rapid assembly of the water bags, meeting the long-distance cofferdam requirements for large-span box girders. The bidirectional design of the inlet / outlet facilitates water injection, water replacement, and water level control, simplifying the maintenance management process. Furthermore, using this application can effectively reduce the operational risks associated with transporting traditional sandbags and other structures, reducing resource waste. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention in an embodiment;

[0013] Figure 2 This is a schematic diagram showing the overlapping positions of the strip-shaped water bags in this embodiment;

[0014] Figure 3 yes Figure 2 A cross-sectional schematic diagram of the auxiliary water bag location;

[0015] Explanation of reference numerals in the attached diagram: 1. First row of reinforcing bars, 2. Second row of reinforcing bars, 3. Strip-shaped water bag, 4. Extended side strip, 5. Auxiliary water bag. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0017] Example:

[0018] Reference Figure 1This embodiment provides a top surface water storage device for the curing stage of precast box girders. It includes two sets of first steel bar rows 1 and second steel bar rows 2, respectively arranged near the edge of the top of the precast box girder. The first steel bar row 1 is arranged along the length of the precast box girder, and the second steel bar row 2 is arranged along the width of the precast box girder. The rectangular area enclosed by the first steel bar row 1 and the second steel bar row 2 is the casting area. A strip-shaped water bag 3 filled with water is set on the top of the precast box girder. The strip-shaped water bag 3 is made of deformable flexible material, specifically high-strength waterproof material or rubber composite material. The strip-shaped water bag 3 forms a rectangular ring around the casting area. Two opposite sides of the rectangular ring are respectively set on the outside of the first steel bar row 1, and the other two opposite sides are respectively set against the second steel bar row 2.

[0019] There is at least one strip-shaped water bag 3, which is detachably connected end to end; an inlet and an outlet are respectively provided at the head and tail of the strip-shaped water bag 3.

[0020] Extended side strips 4 are also provided at the head and tail of the strip-shaped water bag 3; male and female buckles are respectively provided on the extended side strips 4; the strip-shaped water bag 3 is detachably connected at its ends by the male and female buckles.

[0021] Several extension strips 4 are provided along the length of the head and tail of the strip-shaped water bag 3, and the length between two adjacent extension strips 4 is not less than 30cm.

[0022] The head and tail of the strip-shaped water bag 3 are stacked together; an auxiliary water bag 5 is also provided at the overlapping position of the head and tail of the strip-shaped water bag 3. In order to further enhance the sealing performance, an auxiliary water bag is added in the overlapping area. The auxiliary water bag is embedded in the gap of the overlapping part of the head and tail of the strip-shaped water bag 3, which serves to fill the gap at the overlapping position.

[0023] When using the utility model device in this embodiment, the following process can be followed;

[0024] Step 1: After the box girder is poured, clean up the surface debris and confirm the positions of the first and second rows of reinforcing bars;

[0025] Step 2: Lay the strip-shaped water bags along the steel reinforcement bars, and connect them end to end using the male and female buckles of the extended side strips to form an internally closed cofferdam. When connecting, adjust the buckle position of the side strips according to the spacing of the steel reinforcement bars to avoid interference with the pre-embedded steel reinforcement bars.

[0026] Step 3: Fill the auxiliary water bag with water;

[0027] Step 4: Fill the main water bag with water through the inlet. Once the water bag is full, it forms a water reservoir that covers the entire pouring area. Then, fill the water reservoir with water to form a maintenance water layer.

[0028] Step 5: After the maintenance period is over, open the water outlet to drain the water, disassemble the water bag, clean and store it for reuse.

[0029] Through the above implementation method, the device effectively solves the problems of high labor costs, poor sealing and interference with embedded parts in traditional cofferdams, and provides an efficient and reliable solution for the standardized maintenance of precast concrete components.

Claims

1. A device for water storage on the top surface of a precast box girder during maintenance, comprising two groups of first steel bars (1) and second steel bars (2) arranged near the edges on the top of the precast box girder, the first steel bars (1) being arranged along the length direction of the precast box girder, and the second steel bars (2) being arranged along the width direction of the precast box girder; the rectangular area surrounded by the first steel bars (1) and the second steel bars (2) is a pouring area; characterized in that: A strip-shaped water bag (3) filled with water is arranged on the top of the prefabricated box girder; the strip-shaped water bag (3) is made of flexible material; the strip-shaped water bag (3) forms a rectangular ring around the pouring area; two opposite sides of the rectangular ring are arranged on the outside of the first steel bar row (1), and the other two opposite sides are arranged on the second steel bar row (2).

2. The water storage device for the top surface of the precast box girder in the maintenance stage according to claim 1, characterized in that: The number of the strip-shaped water bag (3) is not less than one, and the head and tail of the strip-shaped water bag (3) are detachably connected; a water inlet and a water outlet are arranged at the head and tail of the strip-shaped water bag (3) respectively.

3. The water storage device for the top surface of the precast box girder in the maintenance stage according to claim 2, characterized in that: Corresponding extension edge belts (4) are arranged at the head and tail of the strip-shaped water bag (3); male and female buckles are arranged on the extension edge belts (4) respectively; the strip-shaped water bag (3) is detachably connected at the end through the male and female buckles.

4. The water storage device for the top surface of the precast box girder in the maintenance stage according to claim 3, characterized in that: The extension edge belts (4) at the head and tail of the strip-shaped water bag (3) are arranged with several strips along the length direction, and the length between the adjacent extension edge belts (4) is not less than 30 cm.

5. The water storage device for the top surface of the precast box girder in the maintenance stage according to claim 2, characterized in that: The head and tail of the strip-shaped water bag (3) are arranged in a superposed manner; an auxiliary water bag (5) is arranged at the position where the head and tail of the strip-shaped water bag (3) are superposed.

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