Existing stair board reinforcing structure

Abstract

The utility model relates to the technical field of structure reinforcement, in particular to an existing stair plate reinforcing structure, which is characterized in that the lower end of a high-end stair beam is fixedly connected with the lower end of a low-end stair beam through a main support column and a bottom connecting column, and the main support column is vertically arranged at the lower end of the high-end stair beam; the bottom connecting column is arranged at the lower end of the main supporting column, the main supporting column is perpendicular to the bottom connecting column, and meanwhile one end of the bottom connecting column is fixedly connected with the lower end of the low-end ladder beam. The main supporting columns and the bottom connecting columns are matched with each other, so that stable connection between the high-end stair beams and the low-end stair beams is ensured, the stability of the whole stair structure is enhanced, the safety of vertical load transmission is improved, meanwhile, the loads borne by the step sections can be further dispersed through the arrangement of the auxiliary supporting columns, and the service life of the stair is prolonged. Therefore, the overall bearing capacity and the deformation resistance of the stair are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of structural reinforcement, in particular to a reinforcement structure for an existing stair tread. Background Art

[0002] More and more buildings in cities are gradually entering the "middle age" or "old age". However, due to the influence of various factors such as the environment or surrounding construction activities, many old buildings have produced many quality problems, and even some components have various cracks, which seriously weakened the original bearing capacity of the structure itself. The Chinese utility model with the publication number CN219298866U discloses a reinforcement structure of a concrete structure staircase, including a staircase body with a staircase inclined plate, and the lower surface of the staircase inclined plate is provided with multiple carbon fiber cloth layers along its length direction; a steel plate bead is provided along its width direction, and the two ends of the carbon fiber cloth layer are placed between the staircase inclined plate and the steel plate bead, and the steel plate bead is in a vertical relationship with the carbon fiber cloth layer; a number of evenly distributed bolt holes are opened on the steel plate bead, and a glue anchor bolt is provided through each bolt hole, and the carbon fiber cloth layer is fixed by the glue anchor bolt. The carbon fiber cloth described in the utility model is pasted on the staircase inclined plate, so that when the upper part increases the load or the structure is damaged, its cross-sectional area is increased to improve the bearing capacity of the stairs. However, the reinforcement of the utility model will rust over time, so its service life is limited and requires long-term maintenance in the later stage. Utility Model Content

[0003] The purpose of the utility model is to provide a reinforcement structure for an existing stair tread to solve the problems raised in the above-mentioned background technology.

[0004] The technical solution of the utility model is: a reinforcement structure of an existing stair tread, comprising a high-end ladder beam and a low-end ladder beam, the low-end ladder beam is arranged on the side of the lower end of the high-end ladder beam, and the high-end ladder beam and the low-end ladder beam are fixedly connected through a step section, the lower end of the high-end ladder beam and the lower end of the low-end ladder beam are fixedly connected through a main support column and a bottom connecting column, the main support column is vertically arranged at the lower end of the high-end ladder beam, the bottom connecting column is arranged at the lower end of the main support column, and the main support column and the bottom connecting column are perpendicular to each other, and one end of the bottom connecting column is fixedly connected to the lower end of the low-end ladder beam.

[0005] Furthermore, a plurality of auxiliary support columns are evenly arranged at the lower end of the step section, and the plurality of auxiliary support columns are parallel to each other. At the same time, the auxiliary support columns are vertically arranged at the upper end of the bottom connecting column, and the auxiliary support columns are arranged on the side of the main support column.

[0006] Furthermore, a fiber cloth is provided at the lower end of the step section. The upper end of the fiber cloth is in contact with the lower end of the step section. At the same time, the fiber cloth is arranged at the lower end of the step section through a steel plate pressing strip and a fixing component. The steel plate pressing strip is arranged at the lower end of the fiber cloth. The end of the fixing component penetrates through the steel plate pressing strip and the fiber cloth and is inserted into the interior of the step section.

[0007] Furthermore, the upper end of the fiber cloth is adhered to the lower end of the step section through an epoxy resin adhesive.

[0008] Furthermore, the fixing component includes an anchor bolt and a fixing nut. The anchor bolt is arranged in the middle of the steel plate pressing strip. The inner end of the anchor bolt penetrates through the steel plate pressing strip and the fiber cloth. The fixing nut is sleeved on the outer end of the anchor bolt. At the same time, the fixing nut is in contact with the steel plate pressing strip.

[0009] Furthermore, the fixing component further includes a U-shaped connecting piece. Perforations are provided at the ends of the steel plate pressing strip and the fiber cloth. The perforations are arranged on both sides of the anchor bolt. The two ends of the U-shaped connecting piece are respectively arranged inside the two relatively arranged perforations. At the same time, the anchor bolt is arranged at the upper end of the U-shaped connecting piece, and the end of the anchor bolt is in contact with the upper end of the U-shaped connecting piece.

[0010] Furthermore, a concrete area is provided inside the perforation. The end of the U-shaped connecting piece is arranged inside the concrete area.

[0011] The present utility model provides a reinforcement structure for an existing stair slab through improvement. Compared with the prior art, it has the following improvements and advantages:

[0012] First: Through the mutual cooperation between the main support column and the bottom connection column, the present utility model ensures the stable connection between the high-end ladder beam and the low-end ladder beam, enhances the stability of the entire stair structure, improves the safety of vertical load transfer. At the same time, the setting of multiple auxiliary support columns can further disperse the load borne by the step section, thereby improving the overall load-bearing capacity and anti-deformation ability of the stair.

[0013] Second: Through the fixing component of the anchor bolt and the fixing nut, in cooperation with the steel plate pressing strip, the fiber cloth can be firmly fixed on the step section. Through adhesion with the epoxy resin adhesive, the firm connection between the fiber cloth and the concrete can be further ensured. At the same time, the setting of the U-shaped connecting piece and the concrete area can not only increase the contact area and restraint effect of the anchoring points, but also ensure that the anchoring component is not easily loosened when stressed, thereby enhancing the durability and safety of the reinforcement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further explains the present utility model in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a structural schematic diagram of the existing stair tread reinforcement structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the fixing assembly of the utility model;

[0017] Description of reference numerals:

[0018] 1. High-end ladder beam; 2. Main support column; 3. Bottom connecting column; 4. Step section; 5. Steel plate strip; 6. Fiber cloth; 7. Fixing assembly; 701. Anchor bolt; 702. Fixing nut; 703. U-shaped connector; 8. Low-end ladder beam; 9. Auxiliary support column; 10. Perforation; 11. Concrete area. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0022] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0023] refer to Figure 1 and Figure 2, this embodiment provides a reinforcement structure for an existing stair tread, which includes a main support column 2, a bottom connecting column 3, a steel plate strip 5, a fiber cloth 6, a fixing assembly 7 and an auxiliary support column 9. The main support column 2, the bottom connecting column 3, the steel plate strip 5, the fiber cloth 6, the fixing assembly 7 and the auxiliary support column 9 are all arranged on the existing stair tread to improve the firmness of the existing stair tread. Specifically, the existing stair tread includes a high-end ladder beam 1, a step section 4 and a low-end ladder beam 8. The low-end ladder beam 8 is arranged on the lower end side of the high-end ladder beam 1, and the high-end ladder beam 1 and the low-end ladder beam 8 are fixedly connected through the step section 4.

[0024] In this embodiment, the lower end of the high-end ladder beam 1 and the lower end of the low-end ladder beam 8 are fixedly connected through the main support column 2 and the bottom connecting column 3. The main support column 2 is vertically arranged at the lower end of the high-end ladder beam 1, and the bottom connecting column 3 is arranged at the lower end of the main support column 2. The main support column 2 and the bottom connecting column 3 are perpendicular to each other, and one end of the bottom connecting column 3 is fixedly connected to the lower end of the low-end ladder beam 8. Furthermore, a plurality of auxiliary support columns 9 are evenly arranged at the lower end of the step section 4, and the plurality of auxiliary support columns 9 are parallel to each other. At the same time, the auxiliary support columns 9 are vertically arranged at the upper end of the bottom connecting column 3, and the auxiliary support columns 9 are arranged on the side of the main support column 2. At the same time, a fiber cloth 6 is provided at the lower end of the step section 4, and the upper end of the fiber cloth 6 is fitted with the lower end of the step section 4. At the same time, the fiber cloth 6 is provided at the lower end of the step section 4 through a steel plate strip 5 and a fixing component 7. The steel plate strip 5 is provided at the lower end of the fiber cloth 6, and the end of the fixing component 7 penetrates the steel plate strip 5 and the fiber cloth 6 and is inserted into the interior of the step section 4. It is worth noting that the upper end of the fiber cloth 6 is adhered to the lower end of the step section 4 by an epoxy resin adhesive.

[0025] In this embodiment, the fixing assembly 7 includes an anchor bolt 701, a fixing nut 702 and a U-shaped connector 703. The anchor bolt 701 is arranged in the middle of the steel plate strip 5, and the inward end of the anchor bolt 701 penetrates the steel plate strip 5 and the fiber cloth 6, and the fixing nut 702 is sleeved on the outward end of the anchor bolt 701, and the fixing nut 702 and the steel plate strip 5 are in contact with each other. Further, the ends of the steel plate strip 5 and the fiber cloth 6 are both provided with perforations 10, and the perforations 10 are arranged on both sides of the anchor bolt 701. The two ends of the U-shaped connector 703 are respectively arranged inside the two oppositely arranged perforations 10, and the anchor bolt 701 is arranged at the upper end of the U-shaped connector 703, and the end of the anchor bolt 701 is in contact with the upper end of the U-shaped connector 703. It is worth noting that a concrete area 11 is arranged inside the perforation 10, and the end of the U-shaped connector 703 is arranged inside the concrete area 11.

[0026] Specifically, the working process of the existing stair tread reinforcement structure in this embodiment is as follows:

[0027] Step 1: Install the main support column 2 vertically at the lower end of the high-end ladder beam 1, install the bottom connection column 3 below it, and make the two vertically cross, and ensure that the main support column 2 and the high-end ladder beam 1 are fixedly connected, and the bottom connection column 3 and the low-end ladder beam 8 are fixedly connected. Then, according to the actual length and actual needs of the step section 4, add auxiliary support columns 9 at the lower end of the step section 4, and ensure that all auxiliary support columns 9 are vertically connected to the bottom connection column 3, thereby increasing the horizontal and vertical stability of the step section 4.

[0028] Step 2: Clean the lower end surface of the tread section 4 and then stick it to the fiber cloth 6 using epoxy resin adhesive.

[0029] Step 3: Lay the steel strip 5 at the lower end of the fiber cloth 6, and pre-open holes for the anchor bolt 701 to pass through, and holes 10 for the U-shaped connector 703 to pass through, on the steel strip 5. Then, pass the anchor bolt 701 through the holes and penetrate the fiber cloth 6, and insert the end of the anchor bolt 701 into the concrete of the step section 4. Then install the fixing nut 702 at the outer end of the anchor bolt 701, and tighten the nut 702 to tightly combine the step section 4, the steel strip 5 and the fiber cloth 6.

[0030] Step 4: Pass the C-shaped connector 703 through the through hole 10, and make the anchor bolt 701 located at the upper end of the C-shaped connector 703, and the two are in close contact. At the same time, the end of the C-shaped connector 703 needs to be embedded in the preset concrete area 11 to increase the stability and reliability of the anchor point.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reinforcement structure for an existing stair tread, comprising a high-end ladder beam (1) and a low-end ladder beam (8), wherein the low-end ladder beam (8) is arranged on the lower side of the high-end ladder beam (1), and the high-end ladder beam (1) and the low-end ladder beam (8) are fixedly connected through a step section (4), characterized in that: The lower end of the high-end ladder beam (1) and the lower end of the low-end ladder beam (8) are fixedly connected by a main support column (2) and a bottom connection column (3). The main support column (2) is vertically arranged at the lower end of the high-end ladder beam (1). The bottom connection column (3) is arranged at the lower end of the main support column (2), and the main support column (2) and the bottom connection column (3) are perpendicular to each other. At the same time, one end of the bottom connection column (3) is fixedly connected to the lower end of the low-end ladder beam (8).

2. The existing stair tread reinforcement structure according to claim 1, characterized in that: A plurality of auxiliary support columns (9) are evenly arranged at the lower end of the step section (4). The plurality of auxiliary support columns (9) are parallel to each other. At the same time, the auxiliary support columns (9) are vertically arranged at the upper end of the bottom connection column (3), and the auxiliary support columns (9) are arranged on the side of the main support column (2).

3. An existing stair tread reinforcement structure according to claim 1 or 2, characterized in that: A fiber cloth (6) is arranged at the lower end of the step section (4). The upper end of the fiber cloth (6) is attached to the lower end of the step section (4). At the same time, the fiber cloth (6) is arranged at the lower end of the step section (4) through a steel plate pressing strip (5) and a fixing component (7). The steel plate pressing strip (5) is arranged at the lower end of the fiber cloth (6). The end of the fixing component (7) penetrates through the steel plate pressing strip (5) and the fiber cloth (6) and is inserted into the interior of the step section (4).

4. The existing stair tread reinforcement structure according to claim 3, characterized in that: The upper end of the fiber cloth (6) is adhered to the lower end of the step section (4) by an epoxy resin adhesive.

5. The existing stair tread reinforcement structure according to claim 3, characterized in that: The fixing component (7) includes an anchor bolt (701) and a fixing nut (702). The anchor bolt (701) is arranged in the middle of the steel plate pressing strip (5), and the inner end of the anchor bolt (701) penetrates through the steel plate pressing strip (5) and the fiber cloth (6). The fixing nut (702) is sleeved on the outer end of the anchor bolt (701). At the same time, the fixing nut (702) is in contact with the steel plate pressing strip (5).

6. The existing stair tread reinforcement structure according to claim 5, characterized in that: The fixing component (7) further includes a U-shaped connecting piece (703). Perforations (10) are formed at the ends of the steel plate pressing strip (5) and the fiber cloth (6). The perforations (10) are arranged on both sides of the anchor bolt (701). The two ends of the U-shaped connecting piece (703) are respectively arranged inside the two relatively arranged perforations (10). At the same time, the anchor bolt (701) is arranged at the upper end of the U-shaped connecting piece (703), and the end of the anchor bolt (701) is in contact with the upper end of the U-shaped connecting piece (703).

7. The existing stair tread reinforcement structure according to claim 6, characterized in that: A concrete area (11) is arranged inside the perforation (10). The end of the U-shaped connecting piece (703) is arranged inside the concrete area (11).

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