CN211690753U - Concrete structure with different strength grades of beam-column joints - Google Patents
Concrete structure with different strength grades of beam-column joints Download PDFInfo
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- CN211690753U CN211690753U CN201922189323.0U CN201922189323U CN211690753U CN 211690753 U CN211690753 U CN 211690753U CN 201922189323 U CN201922189323 U CN 201922189323U CN 211690753 U CN211690753 U CN 211690753U
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Abstract
The utility model relates to a building construction technical field discloses a different intensity grade concrete structure of beam column node, including cylinder and the roof beam body, the roof beam body includes the isolation region, the isolation region slope is provided with the isolation net, one side that the isolation net is close to the cylinder is high strength grade concrete, the opposite side of isolation net is low strength grade concrete, distance L between the upper end of isolation net and the cylinder is the half of the height H of the roof beam body, contained angle alpha between the upper end of isolation net and the up end of the roof beam body in high strength grade concrete region is 120-; the utility model provides a pair of different intensity level concrete structure of beam column node can guarantee that the gomphosis that can be better between the high low strength concrete and avoid near the juncture of the two shrink crack to appear, improves the appearance quality of engineering.
Description
Technical Field
The utility model relates to a construction technical field, concretely relates to different intensity level concrete structure of beam column node.
Background
Because the strength grades of the concrete at the beam-column joints are greatly different, when the strength grades are different by two grades, the concrete with different strength grades has different cement using amounts, water-cement ratios and water using amounts, the column is large in volume, the cement using amounts are large, the generated hydration heat is high, and the contraction of the concrete with high and low strength grades is different, so that cracks are easily generated near the junction of the concrete, and the appearance quality of the engineering is influenced although the structure safety is not influenced by the cracks.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model provides a different intensity level concrete structure of beam column node can guarantee that the gomphosis that can be better between the high low strength concrete and avoid near the juncture of the two to appear the shrinkage crack, improves the appearance quality of engineering.
The utility model discloses the technical scheme who adopts does:
a beam-column joint concrete structure with different strength grades comprises a column body and a beam body, wherein the beam body comprises an isolation area, the isolation area is obliquely provided with an isolation net, one side, close to the column body, of the isolation net is made of high-strength grade concrete, the other side of the isolation net is made of low-strength grade concrete, the distance L between the upper end of the isolation net and the column body is one half of the height H of the beam body, and the included angle alpha between the upper end of the isolation net and the upper end face of the beam body in the high-strength grade concrete area is 120-150 degrees.
The rear beam of the uniform line column with different concrete strength grades of the beam column node is cast and tamped, in this way, micro cracks appear in the few floors near the concrete interface of the high and low strength grades of the cast beam column node, and although the micro cracks do not influence the safe use of the structure, the problem needs to be improved in a targeted technology in order to further improve the engineering quality. According to the technical scheme, the isolation net is arranged in the isolation area of the beam body, high-strength-grade concrete is arranged on one side, close to the column body, of the isolation net, low-strength-grade concrete is arranged on the other side of the isolation net, the isolation net can be used for isolating the high-strength-grade concrete from the low-strength-grade concrete, the high-strength-grade concrete is prevented from flowing, and beam body concrete pouring is completed before initial setting of the column body concrete; the isolation net is obliquely arranged, the included angle alpha between the upper end of the isolation net and the upper end face of the beam body in the high-strength-grade concrete area is 120-150 degrees, the distance L between the upper end of the isolation net and the column body is half of the height H of the beam body, good isolation can be guaranteed between the high-strength-grade concrete and the low-strength-grade concrete at the node of the beam column, and cracks cannot be generated near the junction of the high-strength-grade concrete and the low-strength-grade concrete due to the shrinkage difference of the high-strength-grade concrete and the low-strength-grade concrete.
Furthermore, in order to ensure that the isolation net has good structural strength, the isolation net is a steel wire net.
Furthermore, the aperture of the eyelet of the steel wire mesh is 10mm-15mm, the aperture of the eyelet is too large to achieve good isolation effect, and the undersize affects the mutual embedding of the joint surfaces.
Further, the aperture of the holes of the steel wire mesh is 15 mm.
Furthermore, in order to ensure the installation reliability of the isolation net, the periphery of the isolation net is bound and connected with stirrups of the beam body.
Furthermore, in order to ensure the installation reliability of the isolation net, the periphery of the isolation net is bound and connected with stirrups of the beam body through lead wires.
Further, an included angle alpha between the upper end of the isolation net and the upper end face of the beam body in the high-strength-grade concrete area is 135 degrees.
Further, the first stirrup at the end of the beam body is 50mm away from the column.
The utility model has the advantages that: the rear beam of the uniform line column with different concrete strength grades of the beam column node is cast and tamped, in this way, micro cracks appear in the few floors near the concrete interface of the high and low strength grades of the cast beam column node, and although the micro cracks do not influence the safe use of the structure, the problem needs to be improved in a targeted technology in order to further improve the engineering quality. According to the technical scheme, the isolation net is arranged in the isolation area of the beam body, high-strength-grade concrete is arranged on one side, close to the column body, of the isolation net, low-strength-grade concrete is arranged on the other side of the isolation net, the isolation net can be used for isolating the high-strength-grade concrete from the low-strength-grade concrete, the high-strength-grade concrete is prevented from flowing, and beam body concrete pouring is completed before initial setting of the column body concrete; the isolation net is obliquely arranged, the included angle alpha between the upper end of the isolation net and the upper end face of the beam body in the high-strength-grade concrete area is 120-150 degrees, the distance L between the upper end of the isolation net and the column body is half of the height H of the beam body, good isolation can be guaranteed between the high-strength-grade concrete and the low-strength-grade concrete at the node of the beam column, and cracks cannot be generated near the junction of the high-strength-grade concrete and the low-strength-grade concrete due to the shrinkage difference of the high-strength-grade concrete and the low-strength-grade concrete.
Drawings
Fig. 1 is a schematic top view of the present invention;
fig. 2 is a schematic sectional structure diagram of the present invention.
In the figure: a column 1; a beam body 2; an isolation net 3; high strength grade concrete 4; low strength grade concrete 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1 and 2, the embodiment provides a beam-column joint concrete structure with different strength grades, which includes a column 1 and a beam 2, wherein the beam 2 includes an isolation region, the isolation region is obliquely provided with an isolation net 3, one side of the isolation net 3, which is close to the column 1, is provided with high-strength-grade concrete 4, the other side of the isolation net 3 is provided with low-strength-grade concrete 5, a distance L between an upper end of the isolation net 3 and the column 1 is one half of a height H of the beam 2, an included angle α between an upper end of the isolation net 3 and an upper end face of the beam 2 in a region of the high-strength-grade concrete 4 is 135 °, and a first stirrup at an end of the beam 2 is 50mm from the column 1.
The rear beam of the uniform line column with different concrete strength grades of the beam column node is cast and tamped, in this way, micro cracks appear in the few floors near the concrete interface of the high and low strength grades of the cast beam column node, and although the micro cracks do not influence the safe use of the structure, the problem needs to be improved in a targeted technology in order to further improve the engineering quality. In the technical scheme, the isolation net 3 is arranged at the position of the isolation area of the beam body 2, one side of the isolation net 3, which is close to the column body 1, is provided with the high-strength-grade concrete 4, the other side of the isolation net 3 is provided with the low-strength-grade concrete, the isolation net 3 can isolate the high-strength-grade concrete 4 from the low-strength-grade concrete 5, the high-strength-grade concrete 4 is prevented from flowing, and the concrete pouring of the beam body 2 is completed before the concrete of the column body 1 is initially set; the isolation net 3 is obliquely arranged, an included angle alpha between the upper end of the isolation net 3 and the upper end face of the beam body 2 in the area of the high-strength-grade concrete 4 is 135 degrees, the distance L between the upper end of the isolation net 3 and the column body 1 is half of the height H of the beam body 2, good isolation can be guaranteed between the high-strength-grade concrete 4 and the low-strength-grade concrete 5 at the node of the beam column, and cracks cannot be generated near the junction of the high-strength-grade concrete and the low-strength-grade concrete due to the shrinkage difference of the high-strength-grade concrete and the low-strength-grade concrete.
In order to ensure that the isolation net 3 has good structural strength, the isolation net 3 is a steel wire mesh.
The aperture of the holes of the steel wire mesh is 15mm, the too large aperture of the holes cannot achieve good isolation effect, and the too small aperture affects the mutual embedding of the joint surfaces.
In order to ensure the installation reliability of the isolation net 3, the periphery of the isolation net 3 is bound and connected with the stirrups of the beam body 2 through lead wires.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (8)
1. The utility model provides a different intensity grade concrete structure of beam column node which characterized in that: the beam comprises a column body and a beam body, wherein the beam body comprises an isolation region, the isolation region is obliquely provided with an isolation net, one side of the isolation net close to the column body is made of high-strength grade concrete, the other side of the isolation net is made of low-strength grade concrete, the distance L between the upper end of the isolation net and the column body is one half of the height H of the beam body, and the included angle alpha between the upper end of the isolation net and the upper end face of the beam body in the high-strength grade concrete region is 120-plus 150 degrees.
2. The beam-column node concrete structure of different strength grades according to claim 1, characterized in that: the isolation net is a steel wire net.
3. The beam-column node concrete structure with different strength grades according to claim 2, characterized in that: the aperture of the holes of the steel wire mesh is 10mm-15 mm.
4. The beam-column node concrete structure with different strength grades according to claim 2, characterized in that: the aperture of the holes of the steel wire mesh is 15 mm.
5. The beam-column node concrete structure of different strength grades according to claim 1, characterized in that: the periphery of the isolation net is connected with the stirrups of the beam body in a binding manner.
6. The beam-column node concrete structure with different strength grades according to claim 5, wherein: the periphery of the isolation net is bound and connected with stirrups of the beam body through lead wires.
7. The beam-column node concrete structure of different strength grades according to claim 1, characterized in that: and an included angle alpha between the upper end of the isolation net and the upper end face of the beam body in the high-strength grade concrete area is 135 degrees.
8. The beam-column node concrete structure of different strength grades according to claim 1, characterized in that: the first stirrup at the end of the beam body is 50mm away from the column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922189323.0U CN211690753U (en) | 2019-12-09 | 2019-12-09 | Concrete structure with different strength grades of beam-column joints |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922189323.0U CN211690753U (en) | 2019-12-09 | 2019-12-09 | Concrete structure with different strength grades of beam-column joints |
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| CN211690753U true CN211690753U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110773A (en) * | 2022-08-15 | 2022-09-27 | 中国十七冶集团有限公司 | Partition device at beam column node and using method |
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2019
- 2019-12-09 CN CN201922189323.0U patent/CN211690753U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110773A (en) * | 2022-08-15 | 2022-09-27 | 中国十七冶集团有限公司 | Partition device at beam column node and using method |
| CN115110773B (en) * | 2022-08-15 | 2024-03-05 | 中国十七冶集团有限公司 | Partition device at beam-column joint and use method |
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