Bridge wet joint formwork fixing and erecting structure

Abstract

The utility model relates to the technical field of bridge wet joints, in particular to a bridge wet joint formwork fixing and erecting structure. In order to solve the problems that a bottom die of a traditional bridge wet joint formwork fixing and erecting structure cannot be effectively removed in time and construction efficiency is low, the novel bridge wet joint formwork fixing and erecting structure comprises the bottom die, a plurality of screw rods and a plurality of sets of upper supports, the bottom die is formed by splicing two steel plates through a plurality of cross spring hinges, and the screw rods are arranged on the bottom die. A plurality of internal threaded holes are formed in the portion, close to the cross spring hinge, of one steel plate, and each upper support comprises two horizontal supporting frames arranged in a crossed mode and four supporting legs fixed to the two ends of each horizontal supporting frame in a pairwise perpendicular mode. The length of the horizontal supporting frame is larger than the width of the bridge wet joint so that the supporting legs can be supported on the upper surface of the bridge body. By the adoption of the bridge wet joint formwork fixing and erecting structure, the bottom formwork can be effectively dismantled, hoisting equipment does not need to be arranged, operation is easy, and construction efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge wet joints, in particular to a bridge wet joint template fixing and supporting structure. Background Art

[0002] Wet joints refer to joints where prestressed concrete beams are prefabricated in blocks and cantilevered to form large-span connecting beams, and the beams are connected into a whole using cast-in-place concrete. Traditional bridge wet joint formwork is mostly fixed by the suspension method. The bottom formwork is supported by the bottom keel, and the bottom keel is connected to the upper support steel pipe by the tension screw, so as to achieve the fixed support of the bottom formwork. When removing the formwork, the tension screw is removed, and the bottom keel and the upper support steel pipe can be easily removed. However, since the wet joint concrete of the bridge is C50 high-grade concrete, it has strong viscosity and solidifies quickly. The bottom formwork and the poured concrete solidify and bond quickly, and the bottom formwork is located at a high position and cannot be removed effectively in time, thus affecting the appearance quality of the concrete. At the same time, this method requires the use of lifting equipment to lift the bottom formwork, which is cumbersome to operate and has a low safety factor. In addition, when the bottom formwork is fixed and supported by this method, it needs to be fixed by the bottom keel, the upper support steel pipe and the tension screw, which is cumbersome to operate and has low construction efficiency. Summary of the invention

[0003] In order to solve the problems that the bottom formwork of the traditional bridge wet joint formwork fixed support structure cannot be effectively removed in time and the construction efficiency is low, the utility model provides a new bridge wet joint formwork fixed support structure.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A bridge wet joint template fixing support structure comprises a bottom mold, a plurality of screw rods and a plurality of groups of upper brackets. The bottom mold is formed by two steel plates being spliced ​​together by a plurality of cross spring hinges (the cross spring hinges are also called butterfly hinges, i.e. the hinges commonly used in daily life to transform a square table into a round table). A portion of one of the steel plates close to the cross spring hinge is provided with a plurality of internal threaded holes matched with the screw rods. The plurality of internal threaded holes are arranged in a straight line along the length direction of the connection seam between the two steel plates. The number of upper brackets is the same as the number of screw rods. Each upper bracket comprises two cross-arranged horizontal support frames and four support legs vertically fixed to the two ends of each horizontal support frame in pairs. The length of the horizontal support frame is greater than the width of the bridge wet joint so that the support legs are all supported on the upper surface of the beam body. A rotation spacing is provided between two adjacent upper brackets to ensure that when the upper brackets rotate, the adjacent upper brackets will not cause movement interference to them.

[0006] Usage steps: 1) Fold the bottom formwork through the cross spring hinge, and manually pass the folded bottom formwork through the wet joint of the bridge from above. At this time, the bottom formwork is located below the wet joint of the bridge; 2) Unfold the folded bottom formwork through the cross spring hinge, and the two sides of the upper surface of the bottom formwork abut against the lower surface of the beam body. At the same time, the bottom end of the screw is threaded into the internal threaded hole of the bottom formwork; 3) Thread the upper bracket to the top end of the screw, and screw the upper bracket until the supporting legs of the upper bracket are effectively supported on the upper surface of the beam body and the bottom formwork is effectively abutted against the lower surface of the beam body; 4) Pour concrete; 5) Remove the formwork 5 hours after the concrete pouring is completed. When removing the formwork, screw the upper bracket in the opposite direction until the upper bracket is detached from the screw; 6) Push the screw downward. Since the screw is connected to the bottom formwork, the bottom formwork is removed at the same time as the screw is pushed out.

[0007] Furthermore, the angle between the two cross-arranged horizontal support frames is 60 degrees, and the structure is more stable.

[0008] Furthermore, each bottom mold is equipped with three screws and three sets of upper brackets, and the structure is specific and standardized.

[0009] The beneficial effects of the utility model are as follows: by adopting the bridge wet joint formwork fixed support structure of the utility model, the bottom formwork can be effectively dismantled without the need for lifting equipment, the operation is simple, and the construction efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings herein are incorporated into and constitute a part of the specification, show embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0012] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 .

[0014] In the figure: 1- bottom mold, 2- screw rod, 3- upper bracket. DETAILED DESCRIPTION

[0015] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0016] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2 As shown, a bridge wet joint template fixed support structure includes a bottom mold 1, multiple screws 2, and multiple groups of upper brackets 3. The bottom mold 1 is formed by two steel plates being spliced ​​together by multiple cross spring hinges (cross spring hinges are also called butterfly hinges, which are hinges used to transform square tables into round tables in daily life). A portion of one steel plate close to the cross spring hinge is provided with multiple internal threaded holes compatible with the screws 2. The multiple internal threaded holes are arranged in a straight line along the length direction of the connection seam between the two steel plates. The number of upper brackets 3 is the same as the number of screws 2. Each upper bracket 3 includes two cross-arranged horizontal support frames and four support legs vertically fixed to the two ends of each horizontal support frame in pairs. The length of the horizontal support frame is greater than the width of the wet joint of the bridge so that the support legs are all supported on the upper surface of the beam body. A rotation spacing is provided between two adjacent upper brackets 3 to ensure that the adjacent upper brackets 3 will not cause movement interference to the upper bracket 3 when it rotates.

[0020] Usage steps: 1) Fold the bottom form 1 through the cross spring hinge, and manually pass the folded bottom form 1 through the wet joint of the bridge from above. At this time, the bottom form 1 is located below the wet joint of the bridge; 2) Unfold the folded bottom form 1 through the cross spring hinge, and the two sides of the upper surface of the bottom form 1 abut against the lower surface of the beam body, and at the same time, the bottom end of the screw 2 is threadedly connected to the internal threaded hole of the bottom form 1; 3) Thread the upper bracket 3 to the top end of the screw 2, and screw the upper bracket 3 until the supporting legs of the upper bracket 3 are effectively supported on the upper surface of the beam body and the bottom form 1 is effectively abutted against the lower surface of the beam body; 4) Pour concrete; 5) Remove the mold 5 hours after the concrete pouring is completed. When removing the mold, screw the upper bracket 3 in the opposite direction until the upper bracket 3 is separated from the screw 2; 6) Push the screw 2 downward. Since the screw 2 is connected to the bottom form 1, the bottom form 1 is also removed when the screw 2 is pushed out.

[0021] During specific implementation, the angle between the two cross-arranged horizontal support frames is 60 degrees, and the structure is more stable.

[0022] In specific implementation, each bottom mold 1 is equipped with three screws 2 and three groups of upper brackets 3, and the structure is specific and standardized.

[0023] During the construction of a wet joint of a bridge, the width of the joint is 500 mm and the height is 160 mm. After the wet joint formwork fixed support structure of the bridge described in the utility model is adopted for construction, the overall construction time is shortened by 1 / 3 compared with the traditional wet joint formwork fixed support structure of the bridge. After the concrete is poured, the bottom formwork 1 can be normally and effectively removed.

[0024] The above is only a specific implementation of the utility model, which enables those skilled in the art to understand or implement the utility model. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A bridge wet joint formwork fixed support structure, characterized in that: The invention comprises a bottom mold (1), a plurality of screw rods (2), and a plurality of groups of upper brackets (3). The bottom mold (1) is formed by splicing two steel plates through a plurality of cross spring hinges. A portion of one of the steel plates close to the cross spring hinge is provided with a plurality of internal threaded holes matched with the screw rods (2). The plurality of internal threaded holes are arranged in a straight line along the length direction of the connection seam between the two steel plates. The number of upper brackets (3) is the same as the number of screw rods (2). Each upper bracket (3) comprises two cross-arranged horizontal support frames and four support legs vertically fixed to the two ends of each horizontal support frame in pairs. The length of the horizontal support frame is greater than the width of the bridge wet joint so that the support legs are all supported on the upper surface of the beam body. A rotation spacing is provided between two adjacent upper brackets (3) to ensure that when the upper bracket (3) rotates, the adjacent upper bracket (3) will not cause movement interference to it.

2. A bridge wet joint formwork fixed support structure according to claim 1, characterized in that: The angle between the two cross-arranged horizontal support frames is 60 degrees.

3. A bridge wet joint formwork fixed support structure according to claim 2, characterized in that: Each bottom mold (1) is equipped with three screw rods (2) and three sets of upper brackets (3).

Images