Prefabricated trestle plate structure

Abstract

The utility model discloses a prefabricated trestle plate structure which comprises a plurality of supporting beams, a trestle plate is erected among the supporting beams, the upper portion of the edge of the trestle plate is concaved inwards to form a notch, the periphery of the trestle plate is wrapped with a shell, and the trestle plate is arranged in the shell. A drainage ditch used for water dripping is formed between the two trestle plates erected on the supporting beams, and a cover plate used for water leaking covers the position between the two trestle plates. The prefabricated trestle plate is high in construction quality and good in appearance, and compared with a cast-in-place trestle plate, the prefabricated trestle plate is machined and produced in a factory in the aspects of appearance, quality, flatness, perpendicularity, section size and the like, and the quality and field practicability advantages are large; the prefabricated trestle plate concrete supporting system is high in strength, easy to assemble and convenient to construct, the concrete formwork erecting, pouring and maintaining period is shortened, and the construction period is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and particularly relates to a precast trestle board structure. Background Technique

[0002] In the current enclosure design in the industry, most of the support trestle boards adopt the method of first constructing the support beam and then pouring the trestle board, or the integral formwork and pouring of the support beam and the trestle board structure.

[0003] Among them, the on-site poured trestle board can be designed and poured into various structural forms of trestle boards according to local conditions, with flexible layout. However, the pouring and curing time is long, and special curing and leveling treatment are required for the joint area of the new and old concrete at the connection between the support beam and the trestle board. It cannot be reused, the construction period is long, the noise is large, a large amount of construction waste is generated, and the impact on the surrounding environment is great. The integral pouring construction method can avoid the treatment of the joint, but it is necessary to excavate all the soil in the trestle area and formwork, resulting in a significant increase in cost, waste of formwork resources, inconvenient demolition, and affecting the construction progress of the on-site soil and structure.

[0004] At present, most of the underground engineering construction has a tight construction period and a complex environment. The traditional forms of support beam soil excavation, backfilling, and trestle board pouring cannot better solve the contradiction between the safety and stability of underground engineering, the construction period progress, cost control, and environmental impact. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems in the above background technique, and a precast trestle board structure is proposed.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A precast trestle board structure includes a plurality of support beams. A trestle board is erected between the plurality of support beams. An indentation is formed by the inward depression of the upper part of the edge of the trestle board. A shell wraps around the periphery of the trestle board. A drainage ditch for draining water is formed between two trestle boards erected on the support beams. A cover plate for leaking water is covered between the two trestle boards.

[0008] As a further scheme of the utility model: a hole is vertically penetrated through the trestle board at the position of the angle steel, and a bolt is inserted into the hole. The trestle board is fixed to the support beam through the bolt.

[0009] As a further scheme of the utility model: a caulking layer is laid at the bottom of the drainage ditch.

[0010] As a further scheme of the utility model: the caulking layer is an ointment for caulking.

[0011] As a further scheme of the utility model: the thickness of the caulking layer is 30 mm.

[0012] As a further solution of the utility model: the shape of the trestle board is rectangular.

[0013] As a further solution of the utility model: the housing is an angle steel.

[0014] As a further solution of the utility model: multiple drainage ditches are interconnected.

[0015] Advantages of the utility model:

[0016] The precast trestle board has high construction quality and good appearance: compared with the appearance, quality, flatness, perpendicularity, cross-sectional dimensions, etc. of the cast-in-place trestle board, the precast trestle board is processed and produced in the factory, and has great advantages in terms of quality and on-site practicability;

[0017] Convenient assembly construction and shortened construction period: the concrete support system of the precast trestle board has high strength, is easy to assemble, the construction is convenient, the concrete formwork support, pouring and curing cycles are shortened, and the construction period is greatly shortened;

[0018] Green and environment-friendly construction: for the traditional cast-in-place precast trestle board construction, either the support beam is constructed first and then the trestle board is poured, or the integral formwork and the pouring of the support beam and the trestle board structure are carried out. The earthwork excavation and formwork support areas are expanded, the construction waste after demolition cannot be recycled, and the demolition of the concrete support affects the surrounding dust and generates noise pollution. The precast trestle board only needs to consider the earthwork excavation and formwork support in the construction area of the support beam, and there is no need to reinforce and support the earthwork at the bottom of the trestle board, which greatly reduces the construction cost, reduces the generation of construction waste, and ensures green and environment-friendly construction.

[0019] High material turnover rate and great economic benefits: in the preliminary stage of the foundation pit enclosure design, the cross-section, length, thickness, etc. of the precast trestle board can be designed according to the conventional support of the standardized unit, which is convenient for the precast trestle board to be used for temporary road paving in the early stage of the underground project and can be recycled multiple times for multiple projects in the later stage, expanding the economic benefits. Description of the drawings

[0020] The following further describes the present utility model with reference to the drawings.

[0021] Figure 1 is the top view of the present utility model;

[0022] Figure 2 is the side view of the present utility model;

[0023] Figure 3 is the enlarged view at A of the present utility model;

[0024] Figure 4 is the structural schematic diagram of the trestle board of the present utility model.

[0025] In the figure: 1, support beam; 2, trestle board; 3, angle steel; 4, cover plate; 5, drainage ditch; 6, caulking layer; 7, notch; 8, bolt. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment 1. Please refer to Figures 1 - 4 As shown, the present invention is a precast trestle board structure, including a plurality of support beams 1. A trestle board 2 is erected between the plurality of support beams 1. An inward depression is formed at the upper part of the edge of the trestle board 2 to form a notch 7. The periphery of the trestle board 2 is covered with a housing. A drainage ditch 5 for draining water is formed between two trestle boards 2 erected on the support beam 1. A cover plate 4 for leaking water is covered between the two trestle boards 2.

[0028] Embodiment 2. Please refer to Figures 1 - 4 As shown, the present invention is a precast trestle board structure, including a plurality of support beams 1. A trestle board 2 is erected between the plurality of support beams 1. An inward depression is formed at the upper part of the edge of the trestle board 2 to form a notch 7. The periphery of the trestle board 2 is covered with a housing. A drainage ditch 5 for draining water is formed between two trestle boards 2 erected on the support beam 1. A cover plate 4 for leaking water is covered between the two trestle boards 2.

[0029] A hole is vertically penetrated through the trestle board 2 at the position of the angle steel 3, and a bolt 8 is inserted into the hole. The trestle board 2 is fixed to the support beam 1 through the bolt 8.

[0030] In another embodiment, a caulking layer 6 is laid at the bottom of the drainage ditch 5.

[0031] In another embodiment, the caulking layer 6 is an ointment for caulking.

[0032] In another embodiment, the thickness of the caulking layer 6 is 30 mm.

[0033] In another embodiment, the shape of the trestle board 2 is rectangular.

[0034] In another embodiment, the housing is the angle steel 3.

[0035] In another embodiment, a plurality of the drainage ditches 5 are communicated with each other.

[0036] It is worth mentioning that:

[0037] The supporting beam 1 is cast in situ with concrete. The dimensions of the in-situ casting part are 800mm×800mm and 1000mm×1000mm. Two connection holes for the embedded bolts 8 with a depth of 250mm are reserved at the connection part with each precast trestle board 2.

[0038] On the connection side of the supporting beam 1 and the trestle board 2, two high-strength bolts with a length of 500mm are selected to connect the precast trestle board 2 and the supporting beam 1 to form an integral whole.

[0039] The dimensions of the trestle board 2 are 4800mm×3760×300mm. From 250mm to 300mm upward from the bottom of the trestle board 2, a 50mm wedge-shaped notch is designed inward for placing the drainage ditch cover plate 4 with a thickness of 45mm.

[0040] All around the upper and lower sides of the trestle board 2 are wrapped inward by 5mm thick angle steel for 100mm.

[0041] A drainage ditch 5 with a width of 190mm is reserved between each trestle board 2. A 30mm deep caulking of putty is evenly set at the bottom. Waterproof paint is applied on both sides of the drainage ditch 5, and a drainage ditch cover plate 4 with a width of 390mm is laid on the upper part.

[0042] The installation construction process of the trestle board 2 is as follows: the supporting beam 1 is cast in situ and high-strength bolts are embedded at the connection part → design the cross-sectional dimensions and thickness of the trestle board 2 → customize from the manufacturer → hoist the precast trestle board 2 to the designated position → connect with bolts 8 → check the installation and connection quality → apply waterproof paint on the side of the drainage ditch 5 → lay the putty caulking → install the drainage ditch cover plate 4 → installation is completed.

[0043] When the trestle board 2 is demolished, the drainage ditch 5 and the high-strength bolts 8 are demolished in sequence, and then the precast trestle board 2 is hoisted out of the site, so as to achieve the effect of being reusable in turnover and reducing the construction cost.

[0044] The above has described a specific embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the claims of the present invention.

Claims

1. A prefabricated trestle board structure, comprising a plurality of support beams (1), characterized in that, A trestle board (2) is installed between multiple said support beams (1). An inward depression is formed at the upper part of the edge of the trestle board (2) to form a notch (7). The periphery of the trestle board (2) is coated with a housing. A drainage ditch (5) for water to flow is formed between two said trestle boards (2) installed on the support beam (1), and a cover plate (4) for leaking water is covered between the two said trestle boards (2).

2. The precast trestle slab structure according to claim 1, characterized in that, A hole is vertically and penetratingly opened on the trestle board (2) at the angle steel (3), and a bolt (8) is inserted into the hole. The trestle board (2) is fixed to the support beam (1) through the bolt (8).

3. The precast trestle slab structure according to claim 1, characterized in that, A caulking layer (6) is laid at the bottom of the drainage ditch (5).

4. A prefabricated trestle board structure according to claim 3, characterized in that, The caulking layer (6) is a caulking paste.

5. A precast trestle slab structure according to claim 3, characterized in that, The thickness of the caulking layer (6) is 30 mm.

6. A precast trestle slab structure according to any one of claims 1 to 5, characterized in that The shape of the trestle board (2) is rectangular.

7. A precast trestle slab structure according to any one of claims 1 to 5, characterized in that, The housing is an angle steel (3).

8. A precast trestle slab structure according to any one of claims 1 to 5, characterized in that, Multiple said drainage ditches (5) are interconnected.

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