Bridge steel support plate pre-embedded installation adjusting device

Abstract

The utility model discloses a bridge steel support plate pre-embedded installation adjusting device. The device comprises a steel bottom die, a bottom die sand box, fine adjustment bolts, a rubber base plate, a sand cushion layer and a sand baffle, compared with the prior art, the bridge steel support plate pre-embedded installation adjusting device has the advantages that the position of the steel support plate can be accurately moved in the longitudinal direction of the bottom die sand box according to different precast beam lengths, the rubber base plate is convenient to cut, the fine adjustment bolts can accurately adjust the elevation of the four corners of the steel support plate, and the installation accuracy is improved; therefore, the device is high in adjusting precision, convenient to mount and suitable for production of precast beams with different lengths and steel support plates with different angles. And (2) the fine adjustment bolts are dismantled before tensioning, the constraint of the steel support plate is relieved, in the tensioning process and after tensioning, the steel support plate can move longitudinally and vertically along the bottom die sand box due to the fact that the beam body is compressed by prestress, the compression effect of the beam body on the steel bottom die can be buffered through the sand cushion layer and the rubber cushion plate, and therefore damage of the beam body on the steel bottom die is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge prefabricated technical field, concretely relates to a bridge steel support plate pre -buried installation adjusting device. BACKGROUND

[0002] At present, in the highway construction of our country, bridge engineering occupies very big proportion. The prefabricated box girder is the most main component of bridge, and it needs to be concentratedly made in the special beam factory. The beam factory is the necessary tool equipment of beam factory, and the existing beam factory is the full steel reinforced concrete or partial concrete structure, and the beam body steel bottom mould needs to be fixed and installed on the beam factory foundation when making, and the beam body is made by pouring the concrete into the steel bottom mould. Because the wedge-shaped steel support plate is installed on the bottom of the beam end and protrudes from the beam bottom surface, and the pre-buried longitudinal position of the wedge-shaped steel support plate will change with the length of the beam, and the four corner elevations of the wedge-shaped steel support plate pre-buried will also change with the line slope, therefore, in the process of forming the beam body, the prestress tensioning problem will exist, and the steel bottom mould cannot displace according to the direction of prestress release to release the stress, so that the stress generated in the prestress tensioning process acts on the steel bottom mould, so that the steel bottom mould is easily deformed or damaged due to the compression of the prestress, so that the service life of the steel bottom mould is affected. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above problems, the purpose of the utility model is to provide a bridge steel support plate pre-buried installation adjusting device, which can adjust the three-dimensional direction of the end of the beam factory embedded steel support plate, slide in the longitudinal limited range, avoid the compression damage of the steel bottom mould, and the beam factory can be recycled and used.

[0004] In order to achieve the above purpose, the bridge steel support plate pre-buried installation adjusting device provided by the utility model comprises a steel bottom mould, a bottom mould sand box, a fine adjustment bolt, a rubber pad, a sand cushion layer and a sand blocking plate. The steel bottom mould is welded and fixed with the pre-buried steel plate in the concrete foundation, and a bolt through hole is arranged on the bottom surface corresponding to the position of the four steel support positioning holes on the steel support plate. The bottom mould sand box is arranged on the lower side of the steel support plate installation position in the steel bottom mould, and the bottom surface of the two side parts is respectively provided with a steel support longitudinal direction guide opening corresponding to the upper and lower two steel support positioning holes on the same side of the steel support plate. Two sand blocking plates are respectively covered on the two steel support longitudinal direction guide openings to prevent sand leakage through the steel support longitudinal direction guide openings. The fine adjustment bolt is composed of a screw rod and a nut. Each screw rod passes through a bolt through hole on the steel bottom mould, a steel support longitudinal direction guide opening on the bottom mould sand box and a sand blocking plate from bottom to top in turn, and is locked by the nut. Two rubber pads are respectively arranged horizontally between the two end plates of the bottom mould sand box and the two outer ends of the steel support plate. The sand cushion layer is filled between the steel support plate and the bottom surface of the bottom mould sand box, and plays the role of supporting, buffering, isolating, sealing.

[0005] The steel bottom die is composed of connecting plates, cross beams, longitudinal ribs, horizontal frames and face plates.

[0006] The bottom die sand box is composed of a bottom plate, two side plates and two end plates.

[0007] The steel support positioning hole is a semispherical hole.

[0008] The bridge steel support plate pre-embedded installation adjustment device has the following beneficial effects: compared with the prior art, ① the position of the steel support plate can be accurately moved along the longitudinal direction of the bottom die sand box according to different lengths of the prefabricated beam, the rubber pad plate is convenient to cut, and the fine adjustment bolt can accurately adjust the elevation of the four corners of the steel support plate, so that the adjustment precision is high and the installation is convenient, and the device is suitable for different lengths of the prefabricated beam and different angle prefabricated beams of the steel support plate. ② The fine adjustment bolt is removed before tensioning, and the steel support plate is released. During and after tensioning, the beam body is compressed by prestress, and the steel support plate will move along the longitudinal direction and the vertical direction of the bottom die sand box. At this time, the compression effect of the sand cushion layer and the rubber pad plate on the steel bottom die can be utilized to reduce the damage of the beam body to the steel bottom die. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model.

[0010] Figure 1 It is a longitudinal section structure schematic view of the bridge steel support plate pre-embedded installation adjustment device provided by the utility model.

[0011] Figure 2 It is a structure top view of the bridge steel support plate pre-embedded installation adjustment device provided by the utility model.

[0012] Figure 3 It is a structure side view of the steel bottom die and the bottom die sand box in the bridge steel support plate pre-embedded installation adjustment device provided by the utility model.

[0013] Figure 4 It is a structure top view of the steel bottom die and the bottom die sand box in the bridge steel support plate pre-embedded installation adjustment device provided by the utility model.

[0014] Figure 5 It is a steel support structure schematic view. DETAILED DESCRIPTION

[0015] In order to make the technical problems, technical schemes and beneficial effects of the utility model to be solved more clearly, the following will further illustrate the utility model in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0016] As Figures 1 to 5 shown, the bridge steel support plate pre-embedded installation adjusting device provided by the utility model comprises a steel bottom die 1, a bottom die sand box 2, fine adjustment bolts 3, rubber pad plates 4, sand cushion layers 5 and sand blocking plates 6; wherein the steel bottom die 1 is welded and fixed with the pre-embedded steel plate in the concrete foundation, and a bolt through hole is arranged on the bottom surface corresponding to the position of the four steel support positioning holes 8 on the steel support plate 7; the bottom die sand box 2 is arranged at the lower side of the installation position of the steel support plate 7 in the steel bottom die 1, and a steel support longitudinal direction guiding opening 9 corresponding to the upper and lower two steel support positioning holes 8 on the same side of the steel support plate 7 is arranged on the two side positions of the bottom surface; the two sand blocking plates 6 are respectively covered on the two steel support longitudinal direction guiding openings 9 so as to prevent sand leakage through the steel support longitudinal direction guiding openings 9; the fine adjustment bolt 3 is composed of a screw rod and a nut, each screw rod is sequentially passed through the bolt through hole on the steel bottom die 1, the steel support longitudinal direction guiding opening 9 on the bottom die sand box 2 and the sand blocking plate 6 from bottom to top and is abutted against the steel support positioning hole 8 on the steel support plate 7, and is locked by the nut; the two rubber pad plates 4 are respectively arranged horizontally between the two end plates of the bottom die sand box 2 and the two outer ends of the steel support plate 7; the sand cushion layer 5 is filled between the steel support plate 7 and the bottom surface of the bottom die sand box 2, and plays the role of supporting, buffering, isolating and sealing.

[0017] The steel bottom die 1 is composed of a connecting plate, a cross beam, a longitudinal rib, a horizontal frame and a panel.

[0018] The bottom die sand box 2 is composed of a bottom plate, two side plates and two end plates.

[0019] The steel support positioning hole 8 is a semispherical hole.

[0020] The installation and use method of the bridge steel support plate pre-embedded installation adjusting device provided by the utility model will be described as follows:

[0021] 1, the steel bottom die 1 is welded and fixed with the pre-embedded steel plate in the concrete foundation, and a bolt through hole is arranged on the bottom surface corresponding to the position of the four steel support positioning holes 8 on the steel support plate 7; the bottom die sand box 2 is arranged at the lower side of the installation position of the steel support plate 7 in the steel bottom die 1, and a steel support longitudinal direction guiding opening 9 corresponding to the upper and lower two steel support positioning holes 8 on the same side of the steel support plate 7 is arranged on the two side positions of the bottom surface;

[0022] 2, the sand cushion layer 5 is laid in the bottom die sand box 2 in the steel bottom die 1, then the longitudinal distance of the steel support plate 7 is adjusted through the steel support longitudinal direction guiding opening 9 and the fine adjustment bolt 3, and the installation of the steel support plate 7 is started;

[0023] 3, each screw rod in the fine adjustment bolt 3 is sequentially passed through the bolt through hole on the steel bottom die 1, the steel support longitudinal direction guiding opening 9 on the bottom die sand box 2 and the sand blocking plate 6 from bottom to top and is abutted against the steel support positioning hole 8 on the steel support plate 7;

[0024] 4, through the steel support positioning hole 8 positioning fine adjustment bolt 3, using the level on the four corners of the steel support plate 7 elevation measurement, if the elevation is not accurate, with four fine adjustment bolt 3 adjustment steel support plate 7 four corners of the elevation and longitudinal distance, adjustment is completed after fastening fine adjustment bolt 3 nut;

[0025] 5, scraping sand cushion layer 5 and reserve the height of rubber pad 4, then according to the distance between the outer end of steel support plate 7 and the end plate of the bottom mold sand box 2 cutting rubber pad 4, cutting rubber pad 4 is respectively laid horizontally between the two end plate of the bottom mold sand box 2 and the two outer end of steel support plate 7;

[0026] 6, in the steel bottom mold 1 pouring concrete, after the concrete solidification and reach the predetermined strength to make beam body;

[0027] 7, beam body tension before removing fine adjustment bolt 3 to release the constraint of steel support plate 7, in the process of tension due to the compression of beam body arch, the force of steel bottom mold 1 by uniform load gradually into two end force simply supported state, located in the steel support plate 7 of steel bottom mold 1 bear vertical and horizontal pressure, thus resulting in steel bottom mold 1 stress deformation. Because of the steel support plate 7 at the bottom mold sand box 2 with rubber pad 4, it has compressibility, so as to avoid the horizontal compression damage of steel bottom mold 1, sand cushion layer 5 has flowability and buffering, with beam body horizontal compression sliding and vertical compression all have certain buffering, also can avoid the damage of steel bottom mold 1.

[0028] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bridge steel bearing plate pre-embedded installation and adjustment device, characterized in that: The bridge steel bearing plate pre-embedded installation adjustment device includes a steel bottom mold (1), a bottom mold sand box (2), a fine adjustment bolt (3), a rubber pad (4), a sand cushion layer (5), and a sand baffle plate (6); wherein, the steel bottom mold (1) is welded and fixed to the pre-embedded steel plate in the concrete foundation, and a bolt through hole is provided on the bottom surface corresponding to the position of the four steel bearing positioning holes (8) on the steel bearing plate (7); the bottom mold sand box (2) is located on the lower side of the installation position of the steel bearing plate (7) inside the steel bottom mold (1), and a steel bearing longitudinal guide opening (9) is provided on both sides of the bottom surface, corresponding to the two steel bearing positioning holes (8) on the same side of the steel bearing plate (7); the two sand baffle plates (6) cover the two steel bearing longitudinal guide openings respectively. The longitudinal guide opening (9) of the support is used to prevent sand leakage through the longitudinal guide opening (9) of the steel support; the fine adjustment bolt (3) consists of a screw and a nut. Each screw passes through a bolt through hole on the bottom steel mold (1), a longitudinal guide opening (9) of the bottom mold sand box (2) and a sand baffle (6) from bottom to top and then abuts against a steel support positioning hole (8) on the steel support plate (7) and is locked by a nut; two rubber pads (4) are respectively horizontally set between the two end plates of the bottom mold sand box (2) and the two outer ends of the steel support plate (7); the sand pad layer (5) is filled between the bottom surface of the steel support plate (7) and the bottom surface of the bottom mold sand box (2) to provide support, buffer, isolation and sealing.

2. The bridge steel bearing plate pre-embedded installation and adjustment device according to claim 1, characterized in that: The steel bottom mold (1) consists of a connecting plate, a crossbeam, longitudinal ribs, a horizontal frame, and a panel.

3. The bridge steel bearing plate pre-embedded installation and adjustment device according to claim 1, characterized in that: The bottom sandbox (2) consists of a bottom plate, two side plates and two end plates.

4. The bridge steel bearing plate pre-embedded installation and adjustment device according to claim 1, characterized in that: The positioning hole (8) of the steel support is a hemispherical hole.

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