Multi-unit post-fire concrete column damage repair and reinforcement structure
By installing an outer steel plate and a vibrator on the outside of the concrete column after the fire, the problem of the concrete not flowing easily was solved, achieving high-quality repair and fire protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU DAKANG CONSTR TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-12
AI Technical Summary
In existing fire-damaged concrete column repair and reinforcement structures, the poured concrete is not easy to flow, easily forming cavities, and subsequent protection is difficult.
The multi-unit repair component includes an outer steel plate, a vibrator, and a fastening mechanism. Vibration is transmitted through the vibrating rod to accelerate the flow of concrete, and after solidification, holes are formed to fix the steel plate, thus providing fire protection.
This method achieves compacted repair of concrete, improves repair quality, and forms effective fire protection on the outside of the concrete column.
Smart Images
Figure CN224351674U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building repair structure technology, specifically a multi-unit structure for repairing and reinforcing damaged concrete columns after a fire. Background Technology
[0002] After a fire, it is generally necessary to determine the changes in the performance of reinforced concrete and the degree of damage based on the fire temperature and duration, and to assess the damage level of the column. However, for safe use, repair and reinforcement are often required.
[0003] Existing fire-damaged concrete column repair and reinforcement structures generally employ formwork enclosure followed by secondary pouring. However, due to the column structure, the poured concrete does not flow downwards easily, potentially forming cavities. Furthermore, the vibration method above the formwork is insufficient to guide the flow to the lower part of the column. Additionally, conventional formwork needs to be removed after pouring, making subsequent protection of the column impossible. Therefore, we propose a multi-unit fire-damaged concrete column repair and reinforcement structure. Utility Model Content
[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.
[0005] Therefore, the technical solution adopted by this utility model is as follows:
[0006] A multi-unit fire-damaged concrete column repair and reinforcement structure, disposed on the outside of the concrete column, includes: a fixing component and a repair component disposed on the fixing component; the fixing component includes a fixing plate fixed around the bottom of the concrete column and a limiting plate disposed on the outside of the fixing plate; the repair component includes an outer protective steel plate inserted into the limiting plate, a positioning bolt installed on the top of the outer protective steel plate, an installation hole opened in the outer protective steel plate, a hole-drilling mechanism assembled in the installation hole, a vibration mechanism connected to the hole-drilling mechanism, and a fastening mechanism disposed on the vibration mechanism; the hole-drilling mechanism includes a fixing bolt threaded into the installation hole and a vibration head inserted into the inner end of the fixing bolt.
[0007] In a preferred embodiment, the present invention can be further configured as follows: the vibration mechanism includes a vibrating rod embedded in the vibrating head, a mating hole opened at the end of the vibrating rod, an insertion hole opened in the middle of the fixing bolt, a vibrator fixed to the outside of the outer protective steel plate, a vibrating rod connected to the vibrator, a connector fixed to the end of the vibrating rod and inserted into the mating hole, and a pad fixed to the inside of the vibrator.
[0008] In a preferred embodiment, the present invention can be further configured such that the fastening mechanism includes a positioning block installed on the outside of the vibrator, a fixing strap fastened to the inside of the positioning block, and an adjusting buckle disposed on the fixing strap.
[0009] In a preferred embodiment, the present invention can be further configured such that the mounting holes and fixing bolts are evenly distributed at equal intervals on the outer protective steel plate.
[0010] In a preferred embodiment, the present invention can be further configured such that a sealing gasket is provided on the inner side of the outer end of the fixing bolt.
[0011] In a preferred embodiment, the present invention can be further configured such that: a through hole is provided in the middle of the fixing bolt for the vibration head to be inserted, and the vibration head is bonded and fixed inside the fixing bolt.
[0012] The above-mentioned technical solution of this utility model has the following beneficial technical effects:
[0013] 1. This utility model, through the repair component, can fix the outer protective steel plate to the outside of the concrete column, and then pour concrete into it. After the concrete solidifies, the fixing bolt and vibrator head are removed, thus forming a hole for fixing the outer protective steel plate to the outside of the concrete, which facilitates the use of the bolt. In this way, not only is the repair achieved, but the outer protective steel plate also plays a role in subsequent fire prevention, which is highly practical.
[0014] 2. This utility model, through the repair component, can fix the vibrator to the outside of the fixing bolt. When the vibrator is working, the vibration is transmitted to the vibrating rod by the vibrating rod, and then diffused to the concrete by the vibrating head. This accelerates the flow of the concrete, makes the grout more compact, and improves the repair quality. Attached Figure Description
[0015] Figure 1 This is a cross-sectional view of the concrete column damage repair and reinforcement structure of this utility model;
[0016] Figure 2 This is an enlarged view of section A of the concrete column damage repair and reinforcement structure of this utility model;
[0017] Figure 3 This is the main view of the concrete column damage repair and reinforcement structure of this utility model.
[0018] Figure label:
[0019] 100. Fixing component; 110. Fixing plate; 120. Limiting plate;
[0020] 200. Repair component; 210. Outer protective steel plate; 220. Positioning bolt; 230. Mounting hole; 240. Fixing bolt; 241. Sealing gasket; 250. Vibration head; 260. Positioning block; 270. Fixing strap; 280. Adjusting buckle;
[0021] 310, Vibrator; 320, Connecting hole; 330, Insertion hole; 340, Vibrator; 350, Vibrating rod; 360, Connecting joint; 370, Pad. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0023] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.
[0024] The following describes, with reference to the accompanying drawings, some embodiments of this utility model, providing a multi-unit structure for repairing and reinforcing damaged concrete columns after a fire.
[0025] Combination Figures 1-3 As shown, the present invention provides a multi-unit fire-damaged concrete column repair and reinforcement structure, which is set on the outside of the concrete column and includes: a fixing component 100 and a repair component 200 set on the fixing component 100. The fixing component 100 includes a fixing plate 110 fixed around the bottom of the concrete column and a limiting plate 120 set on the outside of the fixing plate 110.
[0026] The repair component 200 includes an outer protective steel plate 210 inserted into the limiting plate 120, a positioning bolt 220 installed on the top of the outer protective steel plate 210, an installation hole 230 opened on the outer protective steel plate 210, a hole-reserving mechanism assembled in the installation hole 230, a vibration mechanism connected to the hole-reserving mechanism, and a fastening mechanism provided on the vibration mechanism. The hole-reserving mechanism includes a fixing bolt 240 threadedly connected in the installation hole 230 and a vibration head 250 inserted into the inner end of the fixing bolt 240. The fixing bolt 240 and the vibration head 250 can be removed after the concrete has solidified through the hole-reserving mechanism, thereby forming a hole for fixing the outer protective steel plate 210 to the outside of the concrete, which facilitates the use of the bolt. In this way, not only is the repair achieved, but the outer protective steel plate 210 also plays a role in subsequent fire prevention.
[0027] Specifically, the vibration mechanism includes a vibrating rod 310 embedded in the vibrating head 250, a mating hole 320 at the end of the vibrating rod 310, an insertion hole 330 in the middle of the fixing bolt 240, a vibrator 340 fixed to the outside of the outer protective steel plate 210, a vibrating rod 350 connected to the vibrator 340, a connector 360 fixed to the end of the vibrating rod 350 and inserted into the mating hole 320, and a pad 370 fixed to the inside of the vibrator 340. The vibrator 340 can be fixedly connected to the outside of the fixing bolt 240. When the vibrator 340 is working, the vibration is transmitted to the vibrating rod 310 by the vibrating rod 350, and then diffused to the concrete by the vibrating head 250. This accelerates the flow of the concrete, makes the grout more compact, and improves the repair quality.
[0028] Furthermore, the fastening mechanism includes a positioning block 260 installed on the outside of the vibrator 340, a fixing strap 270 fastened to the inside of the positioning block 260, and an adjusting buckle 280 provided on the fixing strap 270. The fixing strap 270 can stably fix the vibrator 340 to the outside of the outer protective steel plate 210, thereby facilitating the stability of the operation when the vibrator 340 is started.
[0029] On the other hand, the mounting holes 230 and fixing bolts 240 are evenly distributed on the outer protective steel plate 210. Multiple mounting holes 230 and fixing bolts 240 can be set to form a bolt body mechanism. When the concrete is poured, a depression is formed. After solidification, the mounting holes 230 and fixing bolts 240 can be removed to leave holes in the concrete for subsequent fixing. At the same time, the vibrating rod 350 can be selectively connected to the outer end of the fixing bolt 240, so as to target the unit parts damaged after the fire with vibration as needed, which has high practicality.
[0030] Furthermore, a sealing gasket 241 is provided on the inner side of the outer end of the fixing bolt 240, which can achieve a sealing effect after the fixing bolt 240 solidifies in the mounting hole 230, preventing concrete leakage.
[0031] Furthermore, the fixing bolt 240 has a through hole in the middle for the vibrating head 250 to be inserted, and the vibrating head 250 is bonded and fixed in the fixing bolt 240. This allows the vibration generated by the vibrator 340 to be transmitted to the vibrating rod 310 through the vibrating rod 350, and to be transmitted to the fixing bolt 240 as little as possible, thus providing some shock absorption to the outer protective steel plate 210.
[0032] It should be noted that the outer protective steel plate 210 is formed into a rectangular shape by staggered connection of the first and last parts of the plate. Its sides can be sealed by splicing or sealing strips can be set as needed. This kind of adaptive adjustment can effectively prevent concrete leakage, thereby ensuring the reliability of the repair.
[0033] Furthermore, the vibrating head 250 is made of rubber, which makes it easy to remove after the concrete has hardened. A thin film can also be placed on the outside of the vibrating head 250 to reduce the connection strength between the vibrating head 250 and the concrete, making it easier to remove later.
[0034] Furthermore, the fixing strap 270 adopts a chain fastening strap, which has high stability, while the adjusting buckle 280 adopts an existing conventional fastening buckle, which can be used to fix the fixing strap 270 by pressing the adjusting buckle 280 after the fixing strap 270 is adjusted.
[0035] The working principle and usage process of this utility model are as follows: First, the fixing plate 110 is fixed around the bottom of the concrete column. Then, the outer protective steel plate 210 is placed into the limiting plate 120. Next, the upper part of the outer protective steel plate 210 is fixed to the concrete column using the positioning bolt 220. Then, the mounting holes 230 are screwed into the outer protective steel plate 210. Then, the vibrator 340 is placed in a suitable position according to the requirements, so that the vibrating rod 350 is inserted into the insertion hole 330 and the connector 360 is inserted into the docking hole 320 to complete the docking. Then, a fixing strap 270 is wrapped around the positioning block 260, and the fixing is adjusted by adjusting the buckle 280. The tension of the strap 270 is adjusted so that the vibrator 340 is stably secured to the outside of the outer steel plate 210. Then, concrete is poured from the top of the outer steel plate 210. The vibrator 340 is turned on to transmit vibration to the vibrating head 250, accelerating the flow of concrete. After pouring, wait for the concrete to solidify. After solidification, loosen the strap 270 and remove the vibrator 340. Then, remove the fixing bolt 240 and the vibrating head 250 in sequence. Finally, install a bolt structure at the hole formed by the fixing bolt 240 and the vibrating head 250 to fix the outer steel plate 210 to the outside of the repaired concrete column, thus providing protection.
[0036] The terms "fixed," "installed," "connected," "set up," "open," "equipped with," "embedded," and "assembled" used in this manual to describe the position or relationship of components all refer to conventional physical connections or spatial configurations that can be understood and implemented by those skilled in the art based on the function of the relevant components, the context, and common knowledge. These relationships encompass, but are not limited to, specific forms such as welding, bonding, threaded fastening, snap-fit, interference fit, plug-in, sliding fit, hinge, integral molding, adjacent arrangement, and opening or slot accommodating. Their purpose is to clearly describe the relative positions, mating methods, and functional implementation paths between components, rather than limiting a single specific structural detail. To ensure a smooth and concise reading experience and ease of understanding, no separate explanation is provided after each term.
[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A multi-unit structure for repairing and reinforcing damaged concrete columns after a fire, disposed on the outer side of the concrete column, characterized in that, Includes: a fixing component (100) and a repair component (200) disposed on the fixing component (100); The fixing assembly (100) includes a fixing plate (110) that is fixed around the bottom of the concrete column and a limiting plate (120) disposed on the outside of the fixing plate (110); The repair component (200) includes an outer protective steel plate (210) inserted into the limiting plate (120), a positioning bolt (220) installed on the top of the outer protective steel plate (210), a mounting hole (230) opened on the outer protective steel plate (210), a hole-drilling mechanism assembled in the mounting hole (230), a vibration mechanism connected to the hole-drilling mechanism, and a fastening mechanism provided on the vibration mechanism; The hole-drilling mechanism includes a fixing bolt (240) threaded into the mounting hole (230) and a vibrating head (250) inserted into the inner end of the fixing bolt (240).
2. The multi-unit fire-damaged concrete column repair and reinforcement structure according to claim 1, characterized in that, The vibration mechanism includes a vibrating rod (310) embedded in the vibrating head (250), a mating hole (320) opened at the end of the vibrating rod (310), an insertion hole (330) opened in the middle of the fixing bolt (240), a vibrator (340) fixed to the outside of the outer protective steel plate (210), a vibrating rod (350) connected to the vibrator (340), a connector (360) fixed to the end of the vibrating rod (350) and inserted into the mating hole (320), and a pad (370) fixed to the inside of the vibrator (340).
3. A multi-unit fire-damaged concrete column repair and reinforcement structure according to claim 2, characterized in that, The fastening mechanism includes a positioning block (260) installed on the outside of the vibrator (340), a fixing strap (270) fastened to the inside of the positioning block (260), and an adjusting buckle (280) provided on the fixing strap (270).
4. The multi-unit fire-damaged concrete column repair and reinforcement structure according to claim 1, characterized in that, The mounting holes (230) and fixing bolts (240) are evenly distributed at equal intervals on the outer protective steel plate (210).
5. A multi-unit fire-damaged concrete column repair and reinforcement structure according to claim 1, characterized in that, A sealing gasket (241) is provided on the inner side of the outer end of the fixing bolt (240).
6. A multi-unit fire-damaged concrete column repair and reinforcement structure according to claim 1, characterized in that, The fixing bolt (240) has a through hole in the middle for the vibrating head (250) to be inserted, and the vibrating head (250) is bonded and fixed inside the fixing bolt (240).