CN215716074U - Concrete cantilever beam lengthening connecting joint without changing beam section size - Google Patents
Concrete cantilever beam lengthening connecting joint without changing beam section size Download PDFInfo
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- CN215716074U CN215716074U CN202121485043.5U CN202121485043U CN215716074U CN 215716074 U CN215716074 U CN 215716074U CN 202121485043 U CN202121485043 U CN 202121485043U CN 215716074 U CN215716074 U CN 215716074U
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Abstract
The utility model provides a connecting node for lengthening a concrete cantilever beam without changing the cross-sectional dimension of the beam, which can improve the connecting strength of the concrete beam without changing the cross-sectional dimension of the beam. The concrete post-cast beam section is arranged at one end side of the original concrete beam section, one end of a longitudinal bar of the post-cast concrete beam section is fixed at one end of the longitudinal bar of the original concrete beam section by welding, and the outer side of the other end of the longitudinal bar of the post-cast concrete beam section is bound with a stirrup; the top, the bottom and two sides of the original concrete beam section and the post-cast concrete beam section are enclosed with an outer steel plate reinforcing cylinder, and the outer steel plate reinforcing cylinder is a rectangular reinforcing cylinder formed by welding the edges of a top steel plate, a bottom steel plate and two side steel plates after being enclosed.
Description
Technical Field
The utility model belongs to the technical field of industrial building structure improvement and reinforcement, and particularly relates to a connecting node for lengthening a concrete cantilever beam without changing the cross-sectional dimension of the beam.
Background
With the increasing importance of environmental protection in China, the development concept that the green water mountain is the Jinshan Yinshan is deeply mastered, and in order to improve the living environment of people and realize the aim of green development, many high-emission industrial enterprises face the stopping or transformation or the transformation and upgrading so as to meet the requirements of increasing environmental emission continuously in China and places. Therefore, a large number of industrial buildings and structures need to be transformed and utilized, which is beneficial to saving resources.
The concrete structure is the main structural style of various industrial factory building structures, the connection treatment of the concrete structure is also the key difficult point of the reconstruction project, at present, a plurality of reconstruction schemes adopt the concrete structure to connect the steel structure to form the mixed structure, the concrete structure is connected with the concrete structure, the member section needs to be enlarged to meet the use requirement, and the problem of how to improve the connection bearing capacity under the condition that the use requirement is met and the beam section size is not changed is considered.
Disclosure of Invention
In order to solve the problem of improving the bearing capacity of the joint of the concrete structure, the utility model provides the connecting node of the concrete cantilever beam extension without changing the cross section size of the beam, which can improve the connecting strength of the concrete beam without changing the cross section size of the beam.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model provides a do not change the concrete cantilever beam of roof beam cross sectional dimension and connect long connected node, its characterized in that includes former concrete beam section: the concrete beam comprises an original concrete beam section, a post-cast concrete beam section and a plurality of longitudinal ribs, wherein the original concrete beam section is provided with a plurality of longitudinal ribs; the original concrete beam section, the top, the bottom and two sides of the post-cast concrete beam section are enclosed by an outer steel plate reinforcing cylinder, and the outer steel plate reinforcing cylinder is a rectangular reinforcing cylinder formed by mutually welding the edges of a top steel plate, a bottom steel plate and two side steel plates after being enclosed.
It is further characterized in that:
more than two chemical anchor bolts respectively penetrate through the top steel plate and the bottom steel plate and are fixed on the top surface and the bottom surface of the original concrete beam section;
more than two split bolts respectively penetrate through the two side steel plates and the original concrete beam section, and two ends of the split bolts are fixed by nuts;
the inner sides of the top steel plate, the bottom steel plate and the two side steel plates are respectively provided with an anchor bar pointing to the inner cavity of the outer steel plate reinforcing cylinder, and the anchor bars are respectively inserted into the top surface, the bottom surface and the two side surfaces of the post-cast concrete beam section;
a pouring vibration hole is formed in one side, close to the post-cast concrete beam section, of the top steel plate;
the inner sides of the top steel plate, the bottom steel plate and the two side steel plates are respectively bonded with the original concrete beam section of the original concrete beam section through high-strength non-shrinkage fine aggregate concrete or grouting material;
the non-shrinkage fine aggregate concrete used for the post-cast concrete beam section is 1-2 strength levels higher than the strength of the original concrete beam section.
The utility model has the beneficial effects that: the longitudinal bars of the post-cast concrete beam section are welded with the longitudinal bars of the original concrete beam section and are bound with the stirrups, the outer steel plate reinforcing cylinder is enclosed outside the longitudinal bars of the original concrete beam section and the post-cast concrete beam section, and the post-cast concrete beam section is cast, so that the technical effect of improving the connection strength of the concrete beam is realized under the condition of not changing the cross section size of the beam.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
figure 2 is a schematic cross-sectional view of an original concrete beam section;
FIG. 3 is a schematic cross-sectional view of a post-cast concrete beam section;
FIG. 4 is a schematic view at the top steel plate;
FIG. 5 is a schematic view of a side steel plate;
in the figure: 1, original concrete beam section; 2 post-pouring concrete beam sections; 3, longitudinal ribs; 4, hooping; 5, a top steel plate; 6, a bottom steel plate; 7 side steel plates; 8, chemical anchor bolts; 9 pairs of pull bolts; 10, anchoring ribs; and 11, pouring a vibrating hole.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
A concrete cantilever beam lengthening connection node without changing the beam section size comprises an original concrete beam section 1 and a post-cast concrete beam section 2, wherein the post-cast concrete beam section 2 is arranged on one end side of the original concrete beam section 1, one end of a longitudinal rib 3 of the post-cast concrete beam section 2 is fixed at one end of the longitudinal rib 3 of the original concrete beam section 1 through welding, and a stirrup is bound on the outer side of the other end of the longitudinal rib 3 of the post-cast concrete beam section 2; the original concrete beam section 1 and the post-cast concrete beam section 2 are surrounded by outer steel plate reinforcing cylinders at the top, the bottom and two sides, and the outer steel plate reinforcing cylinders are rectangular reinforcing cylinders formed by welding the edges of top steel plates 5, bottom steel plates 6 and two side steel plates 7.
More than two chemical anchor bolts 8 respectively penetrate through the top steel plate 5 and the bottom steel plate 6 to be fixed on the top surface and the bottom surface of the original concrete beam section 1; more than two split bolts 9 respectively penetrate through the two side steel plates 7 and the original concrete beam section 1, and two ends of the split bolts are fixed by nuts; the inner sides of the top steel plate 5, the bottom steel plate 6 and the two side steel plates 7 are respectively provided with an anchor bar 10 pointing to the inner cavity of the outer layer steel plate reinforcing cylinder, and the anchor bars 10 are respectively inserted into the top surface, the bottom surface and the two side surfaces of the post-cast concrete beam section 2; a pouring vibration hole 11 is formed in one side, close to the post-cast concrete beam section 2, of the top steel plate 5; the inner sides of the top steel plate 5, the bottom steel plate 6 and the two side steel plates 7 are respectively bonded with the original concrete beam section 1 of the original concrete beam section 1 through high-strength non-shrinkage fine aggregate concrete or grouting material; the non-shrinkage fine aggregate concrete used by the post-cast concrete beam section 2 has the strength which is 1-2 strength levels higher than that of the original concrete beam section 1.
The utility model has the beneficial effects that: the longitudinal ribs 3 of the post-cast concrete beam section 2 are welded with the longitudinal ribs 3 of the original concrete beam section 1 and bound with the stirrups, the outer steel plate reinforcing cylinder is enclosed outside the original concrete beam section 1 and the longitudinal ribs 3 of the post-cast concrete beam section 2, and the post-cast concrete beam section 2 is poured, so that the technical effect of improving the connection strength of the concrete beam is realized under the condition of not changing the cross-sectional dimension of the beam.
Claims (7)
1. The utility model provides a do not change the concrete cantilever beam of roof beam cross sectional dimension and connect long connected node, its characterized in that includes former concrete beam section: the concrete beam comprises an original concrete beam section, a post-cast concrete beam section and a plurality of longitudinal ribs, wherein the original concrete beam section is provided with a plurality of longitudinal ribs; the original concrete beam section, the top, the bottom and two sides of the post-cast concrete beam section are enclosed by an outer steel plate reinforcing cylinder, and the outer steel plate reinforcing cylinder is a rectangular reinforcing cylinder formed by mutually welding the edges of a top steel plate, a bottom steel plate and two side steel plates after being enclosed.
2. A concrete cantilever beam extension joint according to claim 1, wherein: more than two chemical anchor bolts respectively penetrate through the top steel plate and the bottom steel plate and are fixed on the top surface and the bottom surface of the original concrete beam section.
3. A concrete cantilever beam extension joint according to claim 2, wherein: more than two split bolts respectively penetrate through the two side steel plates and the original concrete beam section, and two ends of each split bolt are fixed by nuts.
4. A concrete cantilever beam extension joint according to claim 3, wherein: and the inner sides of the top steel plate, the bottom steel plate and the two side steel plates are respectively provided with an anchor bar pointing to the inner cavity of the outer steel plate reinforcing cylinder, and the anchor bars are respectively inserted into the top surface, the bottom surface and the two side surfaces of the post-cast concrete beam section.
5. A concrete cantilever beam extension joint according to claim 4, wherein: and one side of the top steel plate, which is close to the post-cast concrete beam section, is provided with a pouring vibrating hole.
6. A concrete cantilever beam extension joint according to claim 5, wherein: the top steel plate, the bottom steel plate and the two inner sides of the side steel plates are respectively bonded with the original concrete beam section of the original concrete beam section through high-strength non-shrinkage fine aggregate concrete or grouting material.
7. A concrete cantilever beam extension joint according to claim 6, wherein: the non-shrinkage fine aggregate concrete used for the post-cast concrete beam section is 1-2 strength levels higher than the strength of the original concrete beam section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121485043.5U CN215716074U (en) | 2021-07-01 | 2021-07-01 | Concrete cantilever beam lengthening connecting joint without changing beam section size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121485043.5U CN215716074U (en) | 2021-07-01 | 2021-07-01 | Concrete cantilever beam lengthening connecting joint without changing beam section size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215716074U true CN215716074U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121485043.5U Active CN215716074U (en) | 2021-07-01 | 2021-07-01 | Concrete cantilever beam lengthening connecting joint without changing beam section size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215716074U (en) |
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2021
- 2021-07-01 CN CN202121485043.5U patent/CN215716074U/en active Active
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