CN216974265U - The external ring beam is connected with the original structure wall body by adopting L-shaped anchor bars - Google Patents
The external ring beam is connected with the original structure wall body by adopting L-shaped anchor bars Download PDFInfo
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- CN216974265U CN216974265U CN202122367484.1U CN202122367484U CN216974265U CN 216974265 U CN216974265 U CN 216974265U CN 202122367484 U CN202122367484 U CN 202122367484U CN 216974265 U CN216974265 U CN 216974265U
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Abstract
The utility model relates to a method for connecting an external ring beam with an original structure wall by adopting L-shaped anchor bars, which comprises L-shaped anchor bars, an external ring beam, a ring beam stirrup, longitudinal steel bars and anchor holes; the external ring beam forms a closed whole along the periphery of the building; the L-shaped anchor bars and the outer ring beam are integrally cast; the anchoring depth of the L-shaped anchor bar in the original structure wall is 150 mm-200 mm; the anchor slurry of the L-shaped anchor bars in the wall anchor holes is grouted by cement-based antirust mortar; the L-shaped anchor bars are arranged on two sides of a door and window opening of the original structural wall body, and the horizontal distance between the L-shaped anchor bars is 1000-2000 mm; and the L-shaped anchor bars are bound and poured with the longitudinal steel bars of the external ring beam and the hoop reinforcements of the ring beam. Therefore, the new structure and the old structure are reliably connected with each other in a pulling way, the common stress is ensured, and the rigidity mutation of each layer is prevented.
Description
Technical Field
The utility model relates to a method for connecting an external ring beam with an original structure wall body by adopting L-shaped anchor bars, belonging to the technical field of comprehensive reconstruction of the existing building.
Background
At present, masonry structure houses are the main structural form in the existing buildings in China, and account for more than sixty percent of civil buildings. However, the basic materials and connection mode of the masonry structure determine the shortages of brittle property, small deformation capability, poor seismic performance and the like of the structure, and the seismic damage is serious in the earthquake of all times. Therefore, the research on the seismic reinforcement of masonry structures is an important problem to be solved in the current structural engineering. The most common reinforcement method of masonry structures is an earthquake-resistant reinforcement method that an outer wall adopts reinforced concrete ring beams, constructional columns and inner transverse walls with steel pull rods, and the reinforcement method is safe and reliable after multiple earthquake verifications, and particularly the anti-structural collapse capability is obviously improved, so the reinforcement method is often adopted in earthquake-resistant reinforcement. The utility model mainly aims at the L-shaped anchor bar connection between the masonry structure outer ring beam and the original structure wall and the construction method thereof.
SUMMERY OF THE UTILITY MODEL
The utility model provides a method for connecting an external ring beam with an original structure wall by adopting L-shaped anchor bars, which is mainly used for enhancing the collapse resistance of the structure and the toughness of the structure.
The technical scheme of the utility model is as follows:
the external ring beam is connected with the original structural wall by adopting L-shaped anchor bars and comprises L-shaped anchor bars, the external ring beam, a ring beam stirrup, longitudinal steel bars and anchor holes; the external ring beam forms a closed whole along the periphery of the building; the L-shaped anchor bars and the outer ring beam are integrally cast; the anchoring depth of the L-shaped anchor bar in the original structure wall is 150 mm-200 mm; the anchor slurry of the L-shaped anchor bar in the anchor hole of the wall body is grouted by cement-based antirust mortar; the L-shaped anchor bars are preferably arranged on two sides of a door and window opening of the original structural wall body, and the horizontal distance between the L-shaped anchor bars is 1000-2000 mm; and the L-shaped anchor bars are bound and poured with the longitudinal steel bars of the external ring beam and the hoop reinforcements of the ring beam.
Furthermore, the diameter of an anchor hole of the L-shaped anchor bar is 18-25 mm, and the depth of the anchor hole is 150-200 mm.
Furthermore, the strength grade of the concrete of the external ring beam is not lower than C35.
Furthermore, the diameter of the L-shaped anchor bar is not less than 14.
Furthermore, the ring beam stirrups are phi 10 hot rolled steel bars of HBP300 or HRB335 grade, and the spacing between the ring beam stirrups is not more than 100 mm.
Furthermore, the height of the section of the external ring beam is not less than 180mm, and the width of the external ring beam is not less than 120 mm.
Furthermore, the cement base material antirust mortar is prepared from polyvinyl alcohol fibers, the cement base material antirust mortar for filling the anchor hole is added with a water reducing agent to prepare compact mortar, and the doping volume ratio of the polyvinyl alcohol fibers is not more than 2%.
Further, the configuration strength of the cement-based antirust mortar is not less than M10.
The externally-added ring beam is connected with the original structural wall body by adopting the L-shaped anchor bars and the construction method thereof, and the method comprises the following steps:
the method comprises the following steps: and (4) blanking the L-shaped anchor bars and the reinforcing steel bars according to a design drawing.
Step two: before construction, the shortness alkali, oil stain or the veneer layer of the wall surface is removed, and the wall surface to be constructed is plastered and reinforced.
Step three: according to a design drawing, drilling anchor holes in the original structure wall, wherein the depth is 150-200 mm.
Step four: and (4) arranging steel bars and stirrups before pouring the L-shaped anchor bars and the external ring beam, and supporting a template.
Step five: the cement base material antirust mortar is grouted into the anchor holes of the L-shaped anchor bars, and meanwhile, the concrete is continuously poured into the outer ring beam.
Step six: and the top of the external ring beam is well flooded outwards, and the bottom surface of the external ring beam is provided with a water dripping groove.
Has the advantages that:
the most obvious advantage of the utility model is that the external ring beam and the L-shaped anchor bars are integrally cast, so that the new structure and the old structure are reliably connected with each other in a pulling way, the common stress is ensured, and the rigidity mutation of each layer is prevented. The method is adopted for reinforcement, and is suitable for non-ultrahigh and non-ultralimit masonry structures. Meanwhile, the method can not modify the trend of water and electric pipelines and has the advantages of small engineering quantity, quick construction progress, low construction cost and the like.
Drawings
FIG. 1 is a schematic plane view of an external ring beam and an original structural wall body connected by L-shaped anchor bars;
fig. 2 is a sectional view taken along line B-B of fig. 1.
In the figure, 1: l-shaped anchor bars; 2: an external ring beam; 3: an original structure wall body; 4: longitudinal reinforcing steel bars; 5: a hoop beam; 6: and (4) an anchor hole.
Detailed Description
The external ring beam is connected with the original structural wall body by adopting L-shaped anchor bars, and as shown in the figures 1 to 2, the external ring beam comprises L-shaped anchor bars 1, an external ring beam 2, a ring beam stirrup 5, longitudinal steel bars 4 and anchor holes 6; the external ring beam 2 forms a closed whole along the periphery of the building; the L-shaped anchor bars 1 and the external ring beam 2 are integrally cast; the anchoring depth of the L-shaped anchor bars 1 in the original structure wall 3 is 150 mm-200 mm; the anchor slurry of the L-shaped anchor bar 1 in the anchor hole 6 of the original structural wall 3 is grouted by cement-based antirust mortar; the L-shaped anchor bars 1 are preferably arranged at two sides of a door and window opening of the original structural wall 3, and the horizontal distance is 1000-2000 mm; the L-shaped anchor bars 1 are bound and poured with longitudinal steel bars 4 and ring beam stirrups 5 in the external ring beam 2.
Furthermore, the diameter of an anchor hole 6 of the L-shaped anchor bar 1 is 18 mm-25 mm, and the depth of the anchor hole 6 is 150 mm-200 mm.
Furthermore, the concrete strength grade of the outer ring beam 2 is not lower than C35.
Furthermore, the diameter of the L-shaped anchor bar 1 is not less than 14 of the hot rolled steel bar.
Furthermore, the ring beam stirrups 5 are phi 10 hot rolled steel bars of HBP300 or HRB335 grade, and the distance between the phi 10 hot rolled steel bars is not more than 100 mm.
Furthermore, the height of the section of the outer ring beam 2 is not less than 180mm, and the width of the section of the outer ring beam is not less than 120 mm.
Furthermore, the cement base antirust mortar is prepared from polyvinyl alcohol fibers, the cement base antirust mortar for filling the anchor hole 6 is added with a water reducing agent to prepare compact mortar, and the mixing volume ratio of the polyvinyl alcohol fibers is not more than 2%.
Furthermore, the configuration strength of the cement-based antirust mortar is not less than M10.
The externally-added ring beam is connected with the original structure wall body by adopting the L-shaped anchor bars and the construction method thereof, and the method comprises the following steps:
the method comprises the following steps: and (4) blanking the L-shaped anchor bars 1 and the reinforcing steel bars according to a design drawing.
Step two: before construction, the shortness alkali, oil stain or the veneer layer of the wall surface is removed, and the wall surface to be constructed is plastered and reinforced.
Step three: according to a design drawing, drilling an anchor hole 6 with the depth of 150 mm-200 mm in the original structure wall 3.
Step four: and (3) arranging steel bars and stirrups before pouring the L-shaped anchor bars 1 and the outer ring beam 2, and supporting a template.
Step five: the cement base material antirust mortar is grouted into the anchor holes 6 of the L-shaped anchor bars 1, and meanwhile, the concrete is continuously poured into the outer ring beam 2.
Step six: the top of the external ring beam 2 is well watered outwards, and the bottom surface is provided with a water dripping groove.
The above is a typical embodiment of the present invention, the specific implementation of the present invention is not limited to this, and a utility model patent of "the external ring beam is connected with the original structure wall by a concrete pin key" is also applied.
Claims (7)
1. The outer ring beam is connected with the original structure wall body through L-shaped anchor bars, and is characterized in that: comprises L-shaped anchor bars (1), an external ring beam (2), a ring beam stirrup (5), longitudinal steel bars (4) and anchor holes (6); the external ring beam (2) forms a closed whole along the periphery of the building; the L-shaped anchor bars (1) and the external ring beam (2) are integrally cast; the anchoring depth of the L-shaped anchor bars (1) in the original structural wall body (3) is 150-200 mm; the anchor slurry of the L-shaped anchor bar (1) in the anchor hole (6) of the original structural wall (3) is grouted by cement-based antirust mortar; the L-shaped anchor bars (1) are arranged at two sides of a door and window opening of the original structural wall body (3), and the horizontal distance is 1000-2000 mm; the L-shaped anchor bars (1) are bound and poured with longitudinal steel bars (4) and hoop reinforcements (5) of the ring beam in the external ring beam (2).
2. The external ring beam and the original structural wall body are connected by adopting L-shaped anchor bars according to claim 1, and the external ring beam is characterized in that: the diameter of the L-shaped anchor bar (1) is not less than 14.
3. The external ring beam and the original structural wall body are connected by adopting L-shaped anchor bars according to claim 1, and the external ring beam is characterized in that: the diameter of the anchor hole (6) of the L-shaped anchor bar (1) is 18 mm-25 mm, and the depth of the anchor hole (6) is 150 mm-200 mm.
4. The external ring beam and the original structural wall body are connected by adopting L-shaped anchor bars according to claim 1, and the external ring beam is characterized in that: the concrete strength grade of the external ring beam (2) is not lower than C35.
5. The external ring beam and the original structural wall body are connected by adopting L-shaped anchor bars according to claim 1, and the external ring beam is characterized in that: the ring beam stirrups (5) are phi 10 hot rolled steel bars with HBP300 or HRB335 grade, and the distance between the hot rolled steel bars is not more than 100 mm.
6. The external ring beam and the original structural wall body are connected by adopting L-shaped anchor bars according to claim 1, and the external ring beam is characterized in that: the height of the section of the external ring beam (2) is not less than 180mm, and the width of the external ring beam is not less than 120 mm.
7. The external ring beam and the original structural wall body are connected by adopting L-shaped anchor bars according to the claim 1, and the external ring beam is characterized in that: the preparation strength of the cement-based antirust mortar is not less than M12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122367484.1U CN216974265U (en) | 2021-09-28 | 2021-09-28 | The external ring beam is connected with the original structure wall body by adopting L-shaped anchor bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122367484.1U CN216974265U (en) | 2021-09-28 | 2021-09-28 | The external ring beam is connected with the original structure wall body by adopting L-shaped anchor bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216974265U true CN216974265U (en) | 2022-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122367484.1U Active CN216974265U (en) | 2021-09-28 | 2021-09-28 | The external ring beam is connected with the original structure wall body by adopting L-shaped anchor bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216974265U (en) |
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2021
- 2021-09-28 CN CN202122367484.1U patent/CN216974265U/en active Active
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