Movable splicing type prefabricated box girder base

Abstract

The utility model discloses a movable splicing type prefabricated box girder base which comprises a combined base fixed on a concrete base, the combined base comprises a plurality of strip-shaped box bodies connected side by side, and the tops of the strip-shaped box bodies are connected with a bottom die of a prefabricated box girder in a buckled mode. The assembly type box girder base is easy to assemble and convenient to disassemble, the construction period is shortened, the situation that a steel plate bottom die on the upper portion of the splicing type prefabricated box girder base arches upwards due to the large day and night temperature difference is avoided, the flatness of the steel plate bottom die meets the standard requirement, and the quality of the bottom face of a prefabricated box girder poured subsequently is guaranteed; and in addition, the device can be assembled and combined for use according to prefabricated box girders of different batches, specifications and sizes, the adaptability is better, the concrete pouring and dismantling quantity is obviously reduced, and the device can be recycled and is green and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the field of box beam bases, in particular to a movable spliced ​​prefabricated box beam base. Background Art

[0002] The main function of the prefabricated box girder base is to support and fix the prefabricated box girder to ensure its stability and safety during construction and use.

[0003] The existing prefabricated box beam base is mainly formed by pouring concrete on the prefabrication site to form a concrete pedestal 17, and the steel plate 16 is fixed on the upper part of the open-air concrete pedestal 17, and the edge of the steel plate 16 is welded and fixed by pre-buried angle steel 18 (such as Figure 5 As shown), however, the steel plate and the concrete pedestal have different amounts of thermal elongation. After the conventional box girder base steel plate is welded to the embedded angle steel of the concrete pedestal, the steel plate 16 will arch upward due to the large temperature difference between day and night, resulting in the flatness of the box girder bottom plate not meeting the requirements of the specification; and after the prefabricated box girder base is prepared, it can only be used for prefabricated box girders of the same size and specification in the same batch. When encountering the next batch of prefabricated box girders of different sizes and specifications, the previous prefabricated box girder base will be dismantled, which makes this prefabricated box girder base basically unable to be circulated and recycled, and the material waste is relatively serious. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a movable spliced ​​prefabricated box beam base.

[0005] The utility model is realized through the following technical solutions:

[0006] A movable spliced ​​prefabricated box beam base comprises a combined base fixed on a concrete base, the combined base comprises a plurality of strip-shaped boxes connected side by side, and the tops of the plurality of strip-shaped boxes are buckled with bottom molds of the prefabricated box beams.

[0007] Further optionally, the combined base includes two strip-shaped boxes, and the two strip-shaped boxes are connected and fixed by a connecting box.

[0008] Further optionally, the connecting box is distributed at the head and tail ends of the two strip boxes, and the connecting box includes two connecting channel steels facing each other up and down, and the side of the connecting channel steel is fixedly connected to the strip box by fixing bolts.

[0009] Further optionally, the strip box body includes two left and right vertically placed supporting channel steels, and the upper and lower ends of the two supporting channel steels are fixedly connected by a plurality of upper connecting plates and lower connecting plates respectively.

[0010] Further optionally, the ends of the strip box and the connecting box are both provided with blocking channel steels, and the two sides of the blocking channel steels are fixedly connected to the strip box and the connecting box by a plurality of fixing bolts.

[0011] Further optionally, the two strip-shaped boxes of the combined base are tightened and fixed by a plurality of tension steel pipes.

[0012] Further optionally, the bottom mold includes a bottom mold steel plate at the top, and limit frames that are clamped on the outside of the strip box body are fixed to the lower parts of both sides of the bottom mold steel plate.

[0013] Further optionally, the lower connecting plate of the strip box is temporarily fixed to the concrete base by expansion bolts.

[0014] Further optionally, the interior of the strip-shaped box and the interior between the two connected boxes are filled with sand and gravel respectively.

[0015] Compared with the existing technology, the beneficial effects of the utility model are as follows: the utility model arranges a spliced ​​prefabricated box girder base on the top of the concrete base, and the assembled box girder base is simple to assemble, convenient to disassemble, and saves construction time; and the steel plate bottom mold on the upper part of the spliced ​​prefabricated box girder base will not arch up due to the large temperature difference between day and night, so that the flatness of the steel plate bottom mold meets the specification requirements, and the quality of the bottom surface of the prefabricated box girder poured subsequently is guaranteed; and the utility model can also be assembled and used in combination according to prefabricated box girders of different batches of specifications and sizes, and has better adaptability, significantly reduces the number of concrete pouring and dismantling, can be used in a turnover manner, and is green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 Another state diagram;

[0018] Figure 3 yes Figure 1 The second stereoscopic schematic diagram;

[0019] Figure 4 This is a schematic diagram of the use status of the utility model;

[0020] Figure 5 It is a schematic diagram of the prior art of this utility;

[0021] In the figure: strip box 1, supporting channel steel 2, upper connecting plate 3, lower connecting plate 4, fixing holes 5, connecting channel steel 6, blocking channel steel 7, fixing bolts 8, bottom formwork 9, bottom formwork steel plate 10, limiting frame 11, tensioning steel pipe 12, concrete base 13, expansion bolts 14, sand and gravel 15, steel plate 16, concrete pedestal 17, embedded angle steel 18. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementations:

[0023] like Figure 1 As shown, a movable spliced ​​prefabricated box beam base includes multiple modular bases assembled and fixed on a concrete base 13. When the modular bases are assembled, only the bottom mold 9 at the top needs to fit tightly, so as to adapt to the requirements of prefabricated box beams of different specifications and sizes for the bottom plate. Each modular base includes multiple strip box bodies 1 connected side by side, and the tops of the multiple strip box bodies 1 are buckled with the bottom mold 9 of the prefabricated box beam.

[0024] The combined base comprises two strip-shaped boxes 1, and the two strip-shaped boxes 1 are connected and fixed by a connecting box.

[0025] like Figure 1 As shown, the connecting box is distributed at the head and tail ends of the two strip boxes 1, so as to reduce the weight of the overall base. The connecting box includes two connecting channel steels 6 facing each other up and down, and the side of the connecting channel steel 6 is fixedly connected to the strip box 1 by fixing bolts 8.

[0026] like Figure 1 , 3 As shown, the strip box body 1 includes two vertically placed supporting channel steels 2 on the left and right. The upper and lower ends of the two supporting channel steels 2 are fixedly connected by multiple upper connecting plates 3 and lower connecting plates 4 respectively. For easy disassembly, each section of the supporting channel steel 2 is 3 meters long. A 70㎜ diameter tension steel pipe hole of 100㎝ / channel is set at the center line position of the channel steel. The steel pipe hole is used to pass the tension steel pipe 12. A 10㎝ wide and 1㎝ thick upper steel plate is set corresponding to the tension steel pipe hole position and is fully welded to strengthen the fixation to prevent the tension steel pipe 12 from deformation when being tightened.

[0027] like Figure 2 As shown, the ends of the strip box body 1 and the connecting box body are provided with blocking channel steel 7, and the blocking channel steel 7 is fixedly connected to the strip box body 1 and the connecting box body by multiple fixing bolts 8 on both sides. The length of the channel steel is 20 cm, and the connecting bolt hole is located on the center line of the channel steel wing plate. The center distance of the hole is 10 cm, 5 cm away from the end, and the diameter is 20 mm.

[0028] like Figure 1 As shown, the two strip-shaped boxes 1 of the combined base are tightened and fixed by a plurality of tensioning steel pipes 12, and combined and fixed by the tensioning steel pipes 12 to form a whole.

[0029] like Figure 1 , 2As shown, the bottom mold 9 includes a bottom mold steel plate 10 at the top, and the lower parts of both sides of the bottom mold steel plate 10 are fixed with limit frames 11 that are clamped on the outside of the strip box 1. The bottom mold steel plate 10 is set as a 90cm wide and 8mm thick steel plate. The limit frames 11 are welded with 40*40*5 angle steels, with full welding on the outside and no welding on the inside. Each section is 1.5 meters long.

[0030] like Figure 4 As shown, the lower connecting plate 4 of the strip box body 1 is temporarily fixed to the concrete base 13 by expansion bolts 14, so as to facilitate the installation and disassembly of the assembly and the concrete base 13.

[0031] like Figure 4 As shown, the interior of the strip box 1 and the interior between the two connected boxes are filled with sand and gravel 15, which not only acts as a counterweight to prevent deviation, but also improves the supporting stability of the strip box 1 and the connected boxes.

[0032] The implementation principle of a movable spliced ​​prefabricated box beam base in the embodiment of the present application is:

[0033] When using assembly (such as Figure 4 As shown), first, the elevation and flatness of the C30 concrete base 13 are strictly controlled, the steel materials are all rust-proofed, and the bolts are all high-strength bolts; then the strip boxes 1 on both sides are placed on the concrete base 13 according to the designed position; and multiple corresponding tension steel pipes 12 are inserted horizontally;

[0034] Then install the upper and lower connecting channel steels 6 and the end blocking channel steels 7 of the head and tail connection boxes, fix them with fixing bolts 8, and then tighten the nuts on both sides of the tension steel pipe 12;

[0035] Then, the longitudinal fixing hole 5 of the lower connecting plate 4 of the strip box body 1 is punched with an impact drill and temporarily fixed to the upper surface of the concrete base 13 with a 16cm φ18 expansion bolt, and the position is accurately adjusted and then tightened;

[0036] Then, fill the middle of the strip box 1 and the connecting box with medium-coarse sand and gravel 15, and pour water to settle it, so as to improve the stability of the base of the prefabricated box beam and prevent it from deforming and deviating under stress; finally, buckle the bottom mold 9 on the upper part of the strip box 1, so that the bottom mold steel plate 10 of the bottom mold 9 fits with the strip box 1 and the top of the connecting box, and the limit frames 11 on both sides of the bottom mold steel plate 10 are clamped with the side ends of the strip box 1 to prevent the top bottom mold steel plate 10 from falling off;

[0037] In this way, the steel plate bottom formwork 9 on the upper part of the base of the spliced ​​prefabricated box girder will not be arched due to the large temperature difference between day and night, so that the flatness of the steel plate bottom formwork 9 meets the specification requirements, thereby ensuring the quality of the bottom surface of the prefabricated box girder poured subsequently; and the utility model can also be assembled and used in combination according to prefabricated box girders of different batches of specifications and sizes, and has better adaptability, significantly reduces the number of concrete pouring and dismantling, can be used in a turnover manner, and is green and environmentally friendly.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A movable spliced ​​prefabricated box beam base, characterized in that: It comprises a plurality of combined bases assembled and fixed on a concrete base (13), each of the combined bases comprising a plurality of strip-shaped boxes (1) connected side by side, and a bottom mold (9) of a prefabricated box beam is buckled on the top of the plurality of strip-shaped boxes (1).

2. The movable spliced ​​prefabricated box beam base according to claim 1 is characterized in that: The combined base comprises two strip-shaped boxes (1), and the two strip-shaped boxes (1) are connected and fixed via a connecting box.

3. The movable spliced ​​prefabricated box beam base according to claim 2 is characterized in that: The connecting box is distributed at the head and tail ends of the two strip-shaped boxes (1), and comprises two connecting channel steels (6) facing each other vertically, and the side of the connecting channel steel (6) is fixedly connected to the strip-shaped boxes (1) by fixing bolts (8).

4. The movable spliced ​​prefabricated box beam base according to claim 3 is characterized in that: The strip-shaped box body (1) comprises two left and right vertically placed supporting channel steels (2), and the upper and lower ends of the two supporting channel steels (2) are fixedly connected by a plurality of upper connecting plates (3) and lower connecting plates (4) respectively.

5. The movable spliced ​​prefabricated box beam base according to claim 4 is characterized in that: The ends of the strip box (1) and the connecting box are both provided with blocking channel steels (7), and the two sides of the blocking channel steels (7) are fixedly connected to the strip box (1) and the connecting box via a plurality of fixing bolts (8).

6. The movable spliced ​​prefabricated box beam base according to claim 2 is characterized in that: The two strip-shaped boxes (1) of the combined base are tightened and fixed by a plurality of tensioning steel pipes (12).

7. The movable spliced ​​prefabricated box beam base according to claim 1 is characterized in that: The bottom mold (9) comprises a bottom mold steel plate (10) at the top, and limiting frames (11) are fixed to the lower parts of both sides of the bottom mold steel plate (10) and are clamped on the outside of the strip box body (1).

8. The movable spliced ​​prefabricated box beam base according to claim 6 is characterized in that: The lower connecting plate (4) of the strip-shaped box body (1) is temporarily fixed to the concrete base (13) by means of expansion bolts (14).

9. The movable spliced ​​prefabricated box beam base according to claim 2 is characterized in that: The interior of the strip-shaped box (1) and the interior between the two connected boxes are respectively filled with sand and gravel (15).

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