CN214996503U - Reinforced concrete beam and concrete filled steel tube column connecting structure - Google Patents
Reinforced concrete beam and concrete filled steel tube column connecting structure Download PDFInfo
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- CN214996503U CN214996503U CN202120761878.2U CN202120761878U CN214996503U CN 214996503 U CN214996503 U CN 214996503U CN 202120761878 U CN202120761878 U CN 202120761878U CN 214996503 U CN214996503 U CN 214996503U
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Abstract
The utility model discloses a connection structure of reinforced concrete roof beam and steel core concrete column, the steel core concrete column includes the steel pipe and is located the concrete of steel pipe, the fixed surface of steel pipe is provided with the steel stub beam, the reinforced concrete roof beam is including a plurality of longitudinal reinforcement, its characterized in that: the steel pipe of the steel pipe concrete column is provided with a plurality of through holes, the end parts of partial longitudinal steel bars of the reinforced concrete beam penetrate through the through holes and then are anchored in the steel pipe concrete column, and the end parts of partial longitudinal steel bars of the reinforced concrete beam are welded and connected with the short steel beam. The utility model discloses reduce the trompil quantity on the steel pipe, effectively preserved the bearing capacity of steel-pipe column, the partial longitudinal reinforcement anchor of roof beam is in steel core concrete column, practices thrift the section bar and uses, has promoted the connection reliability, has promoted anti-seismic performance.
Description
Technical Field
The utility model relates to a connection structure of reinforced concrete roof beam and steel core concrete column (circular steel tube and square steel pipe) belongs to building technical field.
Background
The existing connection modes of the reinforced concrete beam and the steel pipe concrete column are mainly two.
One of the connection modes (a steel bar full lap joint type structure) is shown in fig. 1 and 2, a plurality of steel short beams (or corbels) extending transversely (horizontally) are welded and fixed on the outer surface of the steel pipe concrete column, and the end parts of longitudinal steel bars of the reinforced concrete beam are all welded and fixed on the short beams. This connection has the following disadvantages.
1. The joint strength of steel construction short beam and steel core concrete column has decided the joint strength of whole reinforced concrete roof beam and steel core concrete column, and the intensity of the longitudinal reinforcement of reinforced concrete roof beam does not obtain utilizing in the overlap joint district, has caused the waste of reinforcing bar.
2. In order to improve the connection strength of the steel structure short beam and the concrete-filled steel tube column, the cross section of the steel structure short beam is inevitably wider (the welding length is larger), so that all longitudinal steel bars can be welded with the short beam, the concrete pouring and tamping inside the short beam are difficult, and the construction defect is easily caused.
3. The torsional bearing capacity of the steel stub beam is not checked and calculated, and safety risks may exist.
Another connection mode (a steel bar full-through type structure) is shown in fig. 3, and the longitudinal steel bars of the reinforced concrete beam completely penetrate through the steel pipe concrete column, so that the advantage of the connection mode is that the longitudinal steel bars of the reinforced concrete beam all play a role in the strength of the connection node, and the connection strength of the beam and the column is improved. However, the disadvantages of this connection are:
1. the installation accuracy requirement of the longitudinal steel bars is high, the number of the construction penetrating bars is large, the construction difficulty is high, and the construction efficiency is low;
2. the steel tube is perforated too much, which affects the bearing capacity of the steel tube concrete column and often needs to be additionally reinforced.
Aiming at the technical problems in the prior art, a novel connecting structure of the reinforced concrete beam and the steel pipe concrete column is necessarily designed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that exists among the prior art, the utility model provides a reinforced concrete roof beam and concrete filled steel tube column's connection structure on the basis of the assurance connection structure security, suitably reduces the construction degree of difficulty. The specific technical scheme is as follows.
The utility model provides a reinforced concrete roof beam and concrete-filled steel tube column's connection structure, concrete-filled steel tube column includes the steel pipe and is located the concrete of steel pipe, the fixed surface of steel pipe is provided with the steel stub beam (or refer to the bracket), the reinforced concrete roof beam is including a plurality of longitudinal reinforcement, its characterized in that: the steel pipe of the steel pipe concrete column is provided with a plurality of through holes, the end parts of partial longitudinal steel bars of the reinforced concrete beam penetrate through the through holes and then are anchored in the steel pipe concrete column, and the end parts of partial longitudinal steel bars of the reinforced concrete beam are fixedly connected with the short steel beam.
By adopting the technical scheme, part of longitudinal steel bars are anchored in the steel tube concrete column, the longitudinal steel bars can directly and reliably improve the connection reliability of the reinforced concrete beam and the steel tube concrete column, and meanwhile, the end parts of the part of longitudinal steel bars are fixed on the short steel beams (not deeply penetrating into the steel tube concrete column), thereby being beneficial to improving the end part strength of the whole reinforced concrete beam. By adopting the connection mode, on one hand, the number of holes on the steel pipe is reduced, and the bearing capacity of the steel pipe column is effectively ensured, and on the other hand, part of longitudinal steel bars are anchored on the steel pipe concrete column, so that the connection reliability is improved, the lap joint quantity of the steel bars is favorably reduced, and the anti-seismic performance is improved.
Furthermore, the end part of the longitudinal steel bar on the outermost side of the reinforced concrete beam in the horizontal direction penetrates through the through hole and then is anchored in the steel pipe concrete column, and the end parts of the rest longitudinal steel bars of the reinforced concrete beam are fixedly connected with the short steel beam. Here, the longitudinal reinforcing bars on the outermost sides in the horizontal direction include longitudinal reinforcing bars located at corners of the beam and waist longitudinal reinforcing bars of the beam; the arrangement has the advantages that the occupied space of the cross section of the steel short beam can be properly reduced, concrete pouring at the steel short beam is convenient, and pouring defects are prevented; and the longitudinal steel bars at the top row and the longitudinal steel bars at the bottom row do not go deep into the steel pipe except the longitudinal steel bars at the most edge (the longitudinal steel bars at the corner), so that the number of openings of the steel pipe can be greatly reduced, and the adverse effect on the bearing capacity of the steel pipe column is avoided.
Further, the short steel beam is I-shaped steel. The I-shaped steel is convenient for the upper row of longitudinal reinforcements (except the longitudinal reinforcements at the corners) and the lower row of longitudinal reinforcements (except the longitudinal reinforcements at the corners) of the reinforced concrete beam to be fixedly welded on the I-shaped steel, and the I-shaped steel cannot form a cavity structure inside, so that the concrete pouring of the beam is facilitated, and the pouring defect is not easy to generate.
Furthermore, a plurality of pins are fixedly arranged on the inner wall of the I-shaped steel. The arrangement of the pins is beneficial to the close combination of the concrete of the reinforced concrete beam and the I-shaped steel.
Further, the reinforced concrete beam comprises an upper row of longitudinal steel bars, a lower row of longitudinal steel bars and a lower row of longitudinal steel bars, wherein the lower row of longitudinal steel bars is positioned below the upper row of longitudinal steel bars, and the lower row of longitudinal steel bars is positioned above the lower row of longitudinal steel bars.
Furthermore, one end, far away from the steel tube concrete column, of the upper wing plate of the I-shaped steel is lower than one end, close to the steel tube concrete column, of the upper wing plate of the I-shaped steel, part of the end portions of the upper row of longitudinal steel bars are fixedly welded to one end, close to the steel tube concrete column, of the upper wing plate of the I-shaped steel, and part of the end portions of the lower row of longitudinal steel bars are fixedly welded to one end, far away from the steel tube concrete column, of the upper wing plate of the I-shaped steel. By the mode, the welding fixing positions of the two rows of longitudinal steel bars are reasonably staggered, the welding quality is favorably improved, and the connection reliability of the longitudinal steel bars and the I-shaped steel is ensured. Here, the part of the upper row of the longitudinal reinforcements and the part of the lower row of the longitudinal reinforcements refer to longitudinal reinforcements except for two outermost longitudinal reinforcements in the horizontal direction.
Furthermore, the end parts of part of the lower row of longitudinal steel bars are fixedly welded at one end, close to the steel tube concrete column, of the I-shaped steel lower wing plate, and the end parts of part of the lower row of longitudinal steel bars are fixedly welded at one end, far away from the steel tube concrete column, of the I-shaped steel lower wing plate. Here, the part of the lower row of the longitudinal reinforcements and the part of the lower row of the longitudinal reinforcements refer to longitudinal reinforcements except for two outermost longitudinal reinforcements in the horizontal direction.
Compared with the prior art, the utility model, following beneficial effect has.
1. The bearing capacity of the steel short beam is only as strong as that of the connected longitudinal steel bar, the outermost longitudinal steel bar in the horizontal direction is anchored in the concrete filled steel tubular column, the longitudinal steel bars penetrating through the steel tube bear about 30% of bending moment of the beam, on the basis of ensuring the connection reliability, the section of the steel short beam can be properly reduced, and the steel is saved by more than 30%.
2. Through stretching into the inside of steel core concrete column with longitudinal reinforcement, the reinforcing bar undertakes whole moments of torsion, solves the antitorque bearing capacity risk among the prior art.
3. Compare in current trompil connected mode, the utility model discloses a trompil quantity reduces more than 50% on the steel pipe, has effectively preserved the bearing capacity of steel pipe.
4. The upper wing plate and the lower wing plate of the I-shaped steel can adopt a narrow flange design, so that concrete can be conveniently poured on two sides, and the compactness of concrete pouring is ensured.
Drawings
FIG. 1 is a schematic elevation view of a connection structure of prior art 1;
FIG. 2 is a schematic view of the connection structure of prior art 1 at a horizontal plane;
FIG. 3 is a schematic view of the connection structure of prior art 2 at a horizontal plane;
FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3;
fig. 5 is a schematic top view of the connection structure of the present invention;
FIG. 6 is a schematic cross-sectional view taken along line 1b-1b of FIG. 1;
FIG. 7 is a schematic cross-sectional view of 1-1 of FIG. 2;
FIG. 8 is a schematic cross-sectional view of section 1a-1a of FIG. 2.
In the figure: the steel pipe concrete column comprises a steel pipe concrete column 1, a steel pipe 1.1, I-shaped steel 2, a pin 2.1, a reinforced concrete beam 3, upper-row longitudinal steel bars 3.1, lower-row longitudinal steel bars 3.2, next upper-row longitudinal steel bars 3.3, next lower-row longitudinal steel bars 3.4 and waist longitudinal steel bars 3.5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 4-7, a connection structure of a reinforced concrete beam and a steel pipe concrete column, the steel pipe concrete column 1 includes a steel pipe 1.1 and concrete (not shown) located in the steel pipe 1.1, a short steel beam is fixedly disposed on an outer surface of the steel pipe 1.1, the short steel beam is an i-steel 2, and preferably, a plurality of pins 2.1 are fixedly disposed on an inner wall of the i-steel 2; the steel pipe (1.1) can be round steel pipe or square steel pipe.
The reinforced concrete beam 3 comprises a plurality of longitudinal steel bars, the longitudinal steel bars comprise upper row longitudinal steel bars 3.1, lower row longitudinal steel bars 3.2, secondary upper row longitudinal steel bars 3.3, secondary lower row longitudinal steel bars 3.4 and waist longitudinal steel bars 3.5, the secondary upper row longitudinal steel bars 3.3 are positioned below the upper row longitudinal steel bars 3.1, and the secondary lower row longitudinal steel bars 3.4 are positioned above the lower row longitudinal steel bars 3.2;
a plurality of through holes 4 are formed in a steel pipe 1.1 of the steel pipe concrete column 1, the end parts of longitudinal steel bars (including waist longitudinal steel bars 3.5, two outermost longitudinal steel bars 3.1 in the upper row, two outermost longitudinal steel bars 3.2 in the lower row, two outermost longitudinal steel bars 3.3 in the lower row and two outermost longitudinal steel bars 3.4 in the lower row) on the outermost side in the horizontal direction of the reinforced concrete beam 3 penetrate through the through holes 4 and are anchored in the steel pipe concrete column 1, and the end parts of the rest longitudinal steel bars of the reinforced concrete beam 3 are fixedly connected with the I-shaped steel 2.
One end, far away from the steel pipe concrete column 1, of an upper wing plate of the I-steel 2 is lower than one end, close to the steel pipe concrete column 1, of the upper wing plate of the I-steel 2, the end parts of the upper rows of longitudinal steel bars (the parts refer to the longitudinal steel bars except for the two outermost longitudinal steel bars, and the parts are the same) are fixedly welded at one end, close to the steel pipe concrete column 1, of the upper wing plate of the I-steel 2, and the end parts of the lower rows of longitudinal steel bars 3.3 are fixedly welded at one end, far away from the steel pipe concrete column 1, of the upper wing plate of the I-steel 2; the end parts of the lower row of longitudinal steel bars 3.2 are fixedly welded at one end, close to the steel tube concrete column 1, of the lower flange of the I-steel 2, and the end parts of the lower row of longitudinal steel bars 3.4 are fixedly welded at one end, far away from the steel tube concrete column 1, of the lower flange of the I-steel 2.
The embodiments of the present invention have been described above with reference to the accompanying drawings, and features of the embodiments and examples of the present invention may be combined with each other without conflict. The present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and the scope of the present invention, which is encompassed by the present invention.
Claims (8)
1. The utility model provides a reinforced concrete roof beam and concrete filled steel tube column's connection structure, concrete filled steel tube column (1) includes steel pipe (1.1) and is located the concrete of steel pipe (1.1), the external fixed surface of steel pipe (1.1) is provided with the steel stub beam, reinforced concrete roof beam (3) are including a plurality of vertical reinforcing bars, its characterized in that: a plurality of through holes (4) are formed in steel pipes (1.1) of the steel pipe concrete column (1), the end portions of partial longitudinal steel bars of the reinforced concrete beam (3) penetrate through the through holes (4) and are anchored in the steel pipe concrete column (1), and the end portions of partial longitudinal steel bars of the reinforced concrete beam (3) are fixedly connected with the short steel beams.
2. A connection structure of a reinforced concrete beam and a steel pipe concrete column according to claim 1, characterized in that the end of the longitudinal steel bar at the outermost side of the reinforced concrete beam (3) in the horizontal direction is anchored in the steel pipe concrete column (1) after passing through the through hole (4), and the ends of the other longitudinal steel bars of the reinforced concrete beam (3) are fixedly connected with the steel short beam.
3. A reinforced concrete beam and concrete filled steel tube column connection structure according to claim 2, wherein said steel short beam is an i-beam (2).
4. A reinforced concrete beam and steel tube concrete column connection structure according to claim 3, characterized in that a plurality of pins (2.1) are fixedly arranged on the inner wall of the i-steel (2).
5. A connection structure of a reinforced concrete beam and a steel pipe concrete column according to claim 3, wherein the reinforced concrete beam (3) comprises an upper row of longitudinal steel bars (3.1), a lower row of longitudinal steel bars (3.2), a lower row of longitudinal steel bars (3.3) and a lower row of longitudinal steel bars (3.4), the lower row of longitudinal steel bars (3.3) is positioned below the upper row of longitudinal steel bars (3.1), and the lower row of longitudinal steel bars (3.4) is positioned above the lower row of longitudinal steel bars (3.2).
6. A reinforced concrete beam and concrete filled steel tube column connection structure as claimed in claim 5, wherein the end of the upper wing plate of said I-beam (2) far away from said concrete filled steel tube column (1) is lower than the end near said concrete filled steel tube column (1), part of the ends of said upper row of longitudinal steel bars (3.1) are fixedly welded to the end of the upper wing plate of said I-beam (2) near said concrete filled steel tube column (1), and part of the ends of said second upper row of longitudinal steel bars (3.3) are fixedly welded to the end of the upper wing plate of said I-beam (2) far away from said concrete filled steel tube column (1).
7. A reinforced concrete beam and concrete filled steel tube column connection structure as claimed in claim 5, wherein part of the ends of the lower row of longitudinal steel bars (3.2) are fixedly welded to the end of the lower flange of the I-beam (2) close to the concrete filled steel tube column (1), and part of the ends of the lower row of longitudinal steel bars (3.4) are fixedly welded to the end of the lower flange of the I-beam (2) far from the concrete filled steel tube column (1).
8. A reinforced concrete beam and concrete filled steel tube column connection according to claim 1, wherein said steel tube (1.1) is a round steel tube or a square steel tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120761878.2U CN214996503U (en) | 2021-04-14 | 2021-04-14 | Reinforced concrete beam and concrete filled steel tube column connecting structure |
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| CN202120761878.2U CN214996503U (en) | 2021-04-14 | 2021-04-14 | Reinforced concrete beam and concrete filled steel tube column connecting structure |
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| CN214996503U true CN214996503U (en) | 2021-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370008A (en) * | 2022-08-02 | 2022-11-22 | 深圳市柏涛蓝森国际建筑设计有限公司 | Connecting structure of concrete filled steel tubular column and reinforced concrete beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370008A (en) * | 2022-08-02 | 2022-11-22 | 深圳市柏涛蓝森国际建筑设计有限公司 | Connecting structure of concrete filled steel tubular column and reinforced concrete beam |
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