A method for reinforcing steel binding in shear walls encountering beams
By using methods such as drilling and rebar installation, bent anchor treatment, and formwork reinforcement, the problems of extended construction period and rebar damage when shear walls and concrete beams intersect longitudinally were solved, achieving efficient rebar binding and cost savings in construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHAANXI ACAD OF ARCHITECTONICS
- Filing Date
- 2023-09-13
- Publication Date
- 2026-05-26
AI Technical Summary
In structural modifications, when shear walls and concrete beams intersect longitudinally, conventional construction methods lead to extended construction periods and are prone to damaging beam reinforcement, and there is a lack of effective reinforcement binding methods.
By employing methods such as drilling and anchoring, bending and anchoring, and setting up equivalent and short reinforcing bars, combined with formwork reinforcement, the steel reinforcement of the shear wall and concrete beam is successfully tied. By chiseling at the bottom of the beam and drilling holes in the floor slab, the connection of the steel reinforcement is ensured to be smooth.
It shortened the construction period, saved construction costs, and improved the efficiency and quality of structural modification.
Smart Images
Figure CN116971619B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rebar tying construction methods; and more particularly to a rebar tying construction method for shear walls encountering beams. Background Technology
[0002] When structural modifications are made, especially due to changes in function such as the addition of stairs, it is necessary to add shear walls from the foundation for structural load-bearing. These shear walls are often obstructed by concrete beams. Since the concrete strength of shear walls is often higher than that of concrete beams, the conventional construction method is to completely remove the core area at the junction of the shear wall and the concrete beam, and then pour high-strength concrete for the shear wall. However, if the shear wall and concrete beam intersect in a cross shape, the amount of removal is relatively small, and the conventional method can be used. But if the shear wall and concrete beam intersect longitudinally, removing the entire concrete beam will significantly lengthen the construction period, and the removal process can easily damage the beam reinforcement, often resulting in more harm than good. Based on the shortcomings of the existing technology, a method to solve these problems is urgently needed. Summary of the Invention
[0003] The purpose of this invention is to provide a method for reinforcing steel binding construction when a shear wall encounters a beam.
[0004] This invention is achieved through the following technical solution:
[0005] This invention relates to a method for reinforcing steel reinforcement binding in shear walls encountering beams, comprising the following steps:
[0006] Step 1: Drill holes and install reinforcement bars at the foundation location according to the size of the vertical reinforcement bars 1 of the shear wall;
[0007] Step 2: Tie the vertical reinforcement 1 and the horizontal reinforcement 2 of the shear wall. When the shear wall encounters a beam, the bottom of the beam is chiseled and the vertical reinforcement 1 of the shear wall is bent and anchored at the bottom of the beam.
[0008] Step 3: Set equivalent reinforcement 3 between the vertical reinforcement bars at the bottom of the concrete beam, and set short reinforcement 4 at the location of the equivalent reinforcement bars 300mm below the floor slab; set the transverse reinforcement 2 of the shear wall at the location of the equivalent reinforcement 3 according to the original configuration, and tie the equivalent reinforcement 3 with the original vertical reinforcement 1 and transverse reinforcement 2 of the shear wall.
[0009] Step 4: Chisel at both ends of the concrete to allow the equivalent steel bar 3 to pass through the floor slab. The binding of the shear wall reinforcement in the upper part of the concrete beam is the same as in Step 2 and Step 3. Repeat these two steps.
[0010] Step 5: Erect the shear wall formwork. First, reinforce the formwork 7 at the variable cross-section position with square timber 5 and bolts 6. After reinforcement, pour concrete for this part.
[0011] Step 6: After the lower part of the variable cross section is poured, the formwork at the variable cross section is erected. Angle steel 8 is used to reinforce the variable cross section. Holes are made at the angle steel 8 to allow the bolts to pass through. The upper part of the variable cross section is reinforced with square timber 5 and bolts 6 as formwork 7. After the reinforcement is completed, concrete is poured.
[0012] Preferably, in step 1, the method of rebar installation specifically involves using rebar adhesive to implant the rebar into the foundation.
[0013] Preferably, in step 2, the length of the bent anchor is 15d, where d is the diameter of the vertical reinforcing bar 1 of the shear wall.
[0014] Preferably, in step 3, the diameter of the equivalent reinforcing bar 3 is 16mm.
[0015] Preferably, in step 3, the equivalent reinforcing bars 3 are placed at both ends of the beam and extend 60mm beyond both sides of the beam ends.
[0016] Preferably, in step 3, the length of the equivalent reinforcing bar 3 extending into the bottom of the beam is ≥1500mm.
[0017] Preferably, in step 3, the short ribs have a diameter of 8mm and a spacing of 200mm.
[0018] The present invention has the following advantages:
[0019] The present invention relates to a method for tying and constructing reinforcement in shear walls and beams, which can not only shorten the construction period but also save construction costs, and has important significance for structural modification research. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the reinforcement binding construction method for shear walls encountering beams according to the present invention;
[0021] Figure 2 This is a schematic diagram of the support of the variable cross-section position template according to the present invention;
[0022] Figure 3 This is a rendering of the reinforcement binding construction method for shear walls encountering beams according to the present invention.
[0023] The reference numerals are as follows: 1 represents vertical reinforcement of the shear wall, 2 represents horizontal reinforcement of the shear wall, 3 represents equivalent reinforcement, 4 represents short reinforcement, 5 represents square timber, 6 represents threaded rod, 7 represents formwork, and 8 represents angle steel. Detailed Implementation
[0024] The present invention will now be described in detail with reference to specific embodiments. It should be noted that the following embodiments are merely further illustrations of the present invention, but the scope of protection of the present invention is not limited to the following embodiments.
[0025] Example
[0026] This embodiment describes a method for reinforcing steel reinforcement binding in shear walls encountering beams, such as... Figure 1-3 As shown, it includes the following steps:
[0027] Step 1: Drill holes and install the steel bars at the foundation location according to the size of the vertical steel bars 1 of the shear wall, and use anchoring adhesive to implant the steel bars into the foundation;
[0028] Step 2: Tie the vertical reinforcement 1 and the horizontal reinforcement 2 of the shear wall according to the drawing requirements. When the shear wall encounters a beam, after chiseling the bottom of the beam, bend and anchor the vertical reinforcement 1 of the shear wall at the bottom of the beam. The bending and anchoring length is 15d (d is the diameter of the vertical reinforcement of the shear wall).
[0029] Step 3: Install equivalent reinforcement 3 (equivalent reinforcement diameter is 16mm) between the vertical reinforcement bars at the bottom of the concrete beam. The equivalent reinforcement 3 is placed at both ends of the beam, each 60mm wide, and the equivalent reinforcement 3 needs to extend into the bottom of the beam by no less than 1500mm (the location of the shear wall cross-section). Short bars 4 are installed 300mm below the floor slab along the location where the equivalent reinforcement 3 is installed. The short bars 4 are C8@200 (diameter is 8mm, spacing is 200mm). The horizontal reinforcement bars of the shear wall at the location where the equivalent reinforcement 3 is installed are set according to the original configuration. The equivalent reinforcement 3 is tied to the original vertical reinforcement 1 and horizontal reinforcement 2 of the shear wall.
[0030] Step 4: Since the equivalent reinforcement 3 is placed 60mm at each end of the concrete beam, it is necessary to chisel at both ends of the concrete to allow the equivalent reinforcement 3 to pass through the floor slab. The binding of the shear wall reinforcement above the concrete beam is the same as in steps 2 and 3; simply repeat these two steps.
[0031] Step 5: Erect the shear wall formwork. Because the shear wall at the bottom of the beam has a variable cross section, it is difficult to reinforce the formwork 7. When closing the formwork, first erect the formwork 7 at the variable cross section position, and use square timber 5 and bolts 6 to reinforce the formwork 7. After the reinforcement is completed, pour concrete for this part first.
[0032] Step 6: After the lower part of the variable cross section is poured, the formwork at the variable cross section is erected. Angle steel 8 is used to reinforce the variable cross section. Holes are made at the angle steel 8 to allow the bolts to pass through. Square timber 5 and bolts 6 are used to reinforce the upper part of the variable cross section to reinforce the formwork 7. After the reinforcement is completed, concrete is poured.
[0033] The present invention relates to a method for tying and constructing reinforcement in shear walls and beams, which can not only shorten the construction period but also save construction costs, and has important significance for structural modification research.
[0034] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.
Claims
1. A method for reinforcing bar binding construction of a shear wall meeting beam, characterized by, Includes the following steps: Step 1: Drill holes and install reinforcement bars at the foundation location according to the size of the vertical reinforcement bars (1) of the shear wall; Step 2: Tie the vertical reinforcement (1) and horizontal reinforcement (2) of the shear wall. When the shear wall encounters a beam, the bottom of the beam is chiseled and the vertical reinforcement (1) of the shear wall is bent and anchored at the bottom of the beam. Step 3: Set equivalent reinforcement (3) between the vertical reinforcement bars at the bottom of the concrete beam, and set short reinforcement (4) at the location where the equivalent reinforcement bars are set 300mm below the floor slab; set the horizontal reinforcement bars of the shear wall at the location where the equivalent reinforcement bars (3) are set according to the original configuration, and tie the equivalent reinforcement bars (3) with the original vertical reinforcement bars (1) and horizontal reinforcement bars (2) of the shear wall. Step 4: Chisel the concrete at both ends to allow the equivalent steel bars (3) to pass through the floor slab. The binding of the shear wall reinforcement in the upper part of the concrete beam is the same as in Step 2 and Step 3. Repeat these two steps. Step 5: Erect the shear wall formwork. First, reinforce the formwork (7) at the variable cross-section position with square timber (5) and bolts (6). After reinforcement, pour concrete for this part. Step 6: After the lower part of the variable cross section is poured, the formwork at the variable cross section is erected. Angle steel (8) is used to reinforce the variable cross section. Holes are made at the angle steel (8) to allow the bolts to pass through. Square timber (5) and bolts (6) are used to reinforce the upper part of the variable cross section. After the reinforcement is completed, concrete is poured. In step 1, the method of rebar installation specifically involves using rebar adhesive to implant the rebar into the foundation; In step 2, the length of the bent anchor is 15d, where d is the diameter of the vertical reinforcement (1) of the shear wall; In step 3, the diameter of the equivalent steel bar (3) is 16mm. The equivalent steel bar (3) is located at both ends of the beam and extends 60mm beyond both sides of the beam end. The length of the equivalent steel bar (3) extending into the bottom of the beam is ≥1500mm. The short bars are 8mm in diameter and spaced 200mm apart.