A concrete thick plate opening reinforcing structure

Abstract

The utility model discloses a kind of concrete thick plate opening reinforcing structure, including eight angle steels, the upper surface and the lower surface of hole mouth side wall are set respectively surrounded, the two ends of each described angle steel respectively extend to the outside of hole mouth and form extension section, the extension section limb processing, the adjacent described extension section vertical lap joint and welding fixed, the first limb of the angle steel and the concrete thick plate top surface or bottom surface is fixed by the multiple anchor bolts of interval arrangement, the second limb of the angle steel opposite up and down is respectively connected by vertical plate welding connection.The utility model, adopt angle steel to carry out surrounding reinforcement to hole mouth, reduce the added concrete beam or steel beam engineering quantity, reduce engineering cost;Reduce the damage of original structure beam column to plant bar;Construction is convenient, shortens construction period.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a reinforced structure for opening holes in thick concrete slabs. Background Technology

[0002] When renovating old buildings in cities, it is common to encounter situations where openings need to be made in the basement ceiling due to functional upgrades (such as adding ventilation systems, fire protection facilities, or electromechanical equipment).

[0003] Basement roof slabs are typically cast-in-place reinforced concrete structures with a thickness of ≥250mm, serving multiple functions including load-bearing (supporting upper loads), waterproofing (preventing groundwater seepage), and civil defense (if applicable). Openings in thick concrete slabs weaken their rigidity, necessitating reinforcement around the openings. Existing reinforcement methods involve adding concrete or steel beams around the openings, connecting them to the original beams and columns with rebar. This method alters the original structural load path, leading to complex calculations, difficult construction, and high costs. Furthermore, the rebar installation process can cause some damage to the original structure. Utility Model Content

[0004] To address the aforementioned shortcomings, the technical problem to be solved by this utility model is to provide a reinforced structure for thick concrete slabs with openings, thereby solving the problems of high construction difficulty, high project cost, and potential damage to the original structure caused by existing technologies.

[0005] Therefore, this application provides a reinforced structure for opening in a thick concrete slab, comprising eight angle steels, which are respectively arranged to surround the upper and lower surfaces of the sidewall of the opening. Both ends of each angle steel extend to the outside of the opening to form an extension section. The extension sections are limb-treated, and adjacent extension sections are vertically overlapped and welded together. The first limb of the angle steel that is in contact with the top or bottom surface of the thick concrete slab is fixed by multiple anchor bolts arranged at intervals. The second limbs of the angle steels that are opposite each other are welded together by vertical plates.

[0006] In the above technical solution, preferably, the original structural steel bars in the thick concrete slab are fixed to the second leg of the angle steel by a drill plug weld.

[0007] In the above technical solution, preferably, the angle steel is an equilateral angle steel or an unequal angle steel.

[0008] In the above technical solution, preferably, the angle steel is an equilateral angle steel L125×10.

[0009] In the above technical solution, preferably, the anchor bolt deployment method is d8@800.

[0010] In the above technical solution, preferably, epoxy resin is injected into the gap between the extension section and the thick concrete slab.

[0011] As can be seen from the above technical solution, the concrete thick slab opening reinforcement structure provided by this utility model solves the problems of high construction difficulty, high project cost, and damage to the original structure caused by existing technologies. Compared with the prior art, this utility model has the following beneficial effects:

[0012] Using angle steel to enclose and reinforce the opening eliminates the need for additional secondary beams around the opening, reducing the amount of new concrete or steel beams required and lowering project costs. It also reduces damage to the original structural beams and columns caused by rebar installation, simplifies construction, and shortens the construction period. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced and explained below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the concrete thick slab opening reinforcement structure provided by this utility model;

[0015] Figure 2 for Figure 1 Cross-sectional view;

[0016] Figure 3 for Figure 2 Enlarged view of part A in the image.

[0017] Figures 1-3 The correspondence between the parts is as follows:

[0018] Opening 10, thick concrete slab 20, angle steel 30, vertical slab 40;

[0019] Original structural reinforcement 21;

[0020] Extension section 31, anchor bolt 32. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To provide a clearer explanation and description of the technical solution and implementation method of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0023] It should be noted that the directional terms such as "inner" and "outer", "front" and "back" and "left" and "right" in this article are based on the product's usage status. Obviously, the use of these directional terms does not limit the scope of protection of this solution.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model provides a reinforced structure for opening a hole in a thick concrete slab. The opening 10 is a rectangular opening made in the thick concrete slab 20. The reinforced structure includes eight angle steels 30, which are respectively arranged to surround the upper and lower surfaces of the sidewall of the opening 10. The two ends of each angle steel 30 extend to the outside of the opening to form an extension section 31. The extension section 31 is cut off. Adjacent extension sections 31 are vertically overlapped and welded together. The gap between the extension section 31 and the thick concrete slab 20 is filled with epoxy resin. The epoxy resin cures for 24 to 48 hours at room temperature, making it waterproof and rustproof.

[0025] The first limb of the angle steel 30, which is attached to the top or bottom surface of the concrete slab 20, is fixed by multiple anchor bolts 32 arranged at intervals.

[0026] The second limbs of the upper and lower opposing angle steels 30 are welded together by vertical plates 40.

[0027] The original structural steel bars 21 and angle steel 30 in the thick concrete slab 20 are fixed to the second leg of the opening 10 by drilling and welding, forming an integral structure with the original concrete structure without damaging the original structure.

[0028] Thus, the opening was enclosed and reinforced using angle steel and vertical plates. The angle steel can be either equal-sided or unequal-sided.

[0029] This embodiment is for openings with a side length of no more than 3000mm, using equal-sided angle steel L125×10, and the anchor bolt deployment method is d8@800.

[0030] Based on the above description of specific embodiments, the concrete thick slab opening reinforcement structure provided by this utility model changes the traditional design of adding concrete beams or steel beams around the opening. It uses angle steel to enclose and reinforce the opening, eliminating the need to add secondary beams around the opening, reducing the amount of new concrete beams or steel beams, and lowering the project cost; it also reduces the damage to the original structural beams and columns caused by rebar installation; construction is convenient and the construction period is shortened.

[0031] Finally, it should be noted that the terms "comprising," "including," or any other variations thereof as used herein are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a…" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] This utility model is not limited to the above-described preferred embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

Claims

1. A reinforced structure for opening holes in a thick concrete slab, characterized in that, It includes eight angle steels, which are respectively set around the upper and lower surfaces of the sidewall of the opening. The two ends of each angle steel extend to the outside of the opening to form an extension section. The extension sections are limbed, and adjacent extension sections are vertically overlapped and welded together. The first limb of the angle steel that is in contact with the top or bottom surface of the concrete slab is fixed by multiple anchor bolts that are spaced apart. The second limbs of the angle steel that are opposite each other are welded together by vertical plates.

2. The reinforced concrete slab with openings according to claim 1, characterized in that, The original structural steel bars in the thick concrete slab are fixed to the second leg of the angle steel by drilling and plug welding.

3. The reinforced concrete slab with openings according to claim 1, characterized in that, The angle steel used is either equal-sided or unequal-sided.

4. The reinforced concrete slab with openings according to claim 1, characterized in that, The angle steel used is an equal-sided angle steel L125×10.

5. The reinforced concrete slab with openings according to claim 1, characterized in that, The anchor bolt deployment method is d8@800.

6. The reinforced concrete slab with openings according to claim 1, characterized in that, The gap between the extension section and the thick concrete slab is filled with epoxy resin.

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