CN212613376U - Reinforced concrete coupling beam structure - Google Patents
Reinforced concrete coupling beam structure Download PDFInfo
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- CN212613376U CN212613376U CN202021984368.3U CN202021984368U CN212613376U CN 212613376 U CN212613376 U CN 212613376U CN 202021984368 U CN202021984368 U CN 202021984368U CN 212613376 U CN212613376 U CN 212613376U
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Abstract
The utility model relates to a reinforced concrete coupling beam structure, which comprises a sectional coupling beam and a floor beam; the sectional type coupling beam comprises a first yielding section and a second yielding section which are connected with each other, the floor beam is horizontally and vertically supported on the second yielding section, an I-shaped steel is arranged in the second yielding section, one end of the I-shaped steel is welded on the steel rib, and the other end of the I-shaped steel transversely penetrates through the end part of the floor beam; longitudinal bars and stirrups are arranged in the first yielding section and the second yielding section; the density of the stirrups on the rear yielding section is greater than that of the first yielding section; the distance between one side of the floor beam and the joint of the first yielding section and the second yielding section is not less than 100mm, the floor beam is prevented from being arranged into an oblique beam, the requirement of anti-seismic design can be met, the original arrangement and the section size of the connecting beam do not need to be adjusted, the construction is convenient, the material consumption is saved, and the process is simple and easy to operate.
Description
Technical Field
The utility model relates to a reinforced concrete links roof beam technical field, concretely relates to reinforced concrete links roof beam structure.
Background
In high-rise or super high-rise buildings, the standard requires that the floor beam is not suitable to be supported on the connecting beam of the shear wall or the core cylinder, because the connecting beam can generate torsion when the floor beam is supported on the connecting beam, on one hand, the floor beam cannot be effectively restrained, on the other hand, the stress on the connecting beam is very unfavorable, and when an earthquake occurs, potential safety hazards exist; in order to avoid the coupling beams in actual works it is often necessary to arrange the floor beams as oblique beams. However, the floor beams are arranged into oblique beams, which have large material loss and inconvenient construction, are not beneficial to room division and equipment arrangement, and the height and the structural arrangement of the connecting beams cannot be adjusted due to the limitation of building functional arrangement and subject structural arrangement.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a reinforced concrete is roof beam structure even, aims at strengthening the rigidity and the ductility of even roof beam one end, makes this end after surrender or slowly surrender.
For realizing the purpose of the utility model, the utility model adopts the following technical scheme:
a reinforced concrete coupling beam structure comprises a sectional coupling beam and a floor beam; the sectional type coupling beam comprises a first yielding section and a second yielding section which are connected with each other, the floor beam is horizontally and vertically supported on the second yielding section, an I-shaped steel is arranged in the second yielding section, one end of the I-shaped steel is welded on the steel rib, and the other end of the I-shaped steel transversely penetrates through the end part of the floor beam; longitudinal bars and stirrups are arranged in the first yielding section and the second yielding section; the density of the stirrups on the rear yielding section is greater than that of the first yielding section; the distance between one side of the floor beam and the joint of the first yielding section and the second yielding section is not less than 100 mm.
Preferably, the sectional type coupling beam is additionally provided with beam surface bending-resistant reinforcing steel bars and beam bottom bending-resistant reinforcing steel bars, the beam surface bending-resistant reinforcing steel bars and the beam bottom bending-resistant reinforcing steel bars extend out of two ends of the sectional type coupling beam and are bent, the extending length is less than or equal to 600mm, and the length of the bent sections is not less than 15 times of the diameter of the bent sections.
Preferably, the reinforced concrete coupling beam structure is characterized in that the distance between the stirrups of the rear yielding section is 100 mm.
Preferably, the reinforced concrete coupling beam structure is characterized in that the rigidity reduction coefficient of the first yielding section is 0.6-0.8, and the rigidity amplification coefficient of the second yielding section is 1.5-2.0.
The utility model has the advantages that:
the sizes and the reinforcing bars of the first yielding section and the second yielding section of the sectional type connecting beam can be determined according to the actual stress, and the I-shaped steel and the stirrup are arranged in the second yielding section, so that plastic hinge occurs even if the first yielding section and the second yielding section yield energy under medium and large earthquakes; the rear yield section can also directly support the floor beam under the independent action, the requirement of earthquake-proof design can be met, the original arrangement and the section size of the connecting beam are not required to be adjusted, the connecting beam is arranged into the vertical beam, the construction is convenient, the material consumption is saved, and the process is simple and easy to operate.
Drawings
FIG. 1 is a schematic structural view of a post-yield sectional type reinforced concrete coupling beam;
in the figure: the steel beam comprises a first yield section-1, a second yield section-2, a floor beam-3, a first shear wall-4, a second shear wall-5, a beam surface steel bar-6, a beam bottom steel bar-7, an I-shaped steel-8, a steel rib-9, a stirrup-10 and a longitudinal rib-11.
Detailed Description
For a better understanding of the present invention, reference is made to the accompanying drawings in the embodiments of the present invention; the technical solution of the embodiment of the present invention is clearly and completely described.
A reinforced concrete coupling beam structure as shown in fig. 1, comprising a sectional type coupling beam and a floor beam 3; the sectional type coupling beam comprises a first yielding section 1 and a second yielding section 2, wherein the first yielding section 1 yields energy first under medium and large earthquakes to form a plastic hinge. The rear yield segment 2 remains substantially elastic under moderate shocks and is only slightly damaged under major shocks.
The concrete structure is as follows: the post-buckling section 2 is horizontally and vertically supported with a floor beam 3, and the post-buckling section
I-shaped steel 8 is arranged in the clothing section 2, one end of the I-shaped steel 8 is welded with a steel rib 8, and the other end transversely penetrates through the end part of the floor beam 3; longitudinal ribs 11 and stirrups 10 are arranged in the first yielding section 1 and the second yielding section 2; the density of the stirrup 10 on the rear yielding section 2 is greater than that of the first yielding section 1; the distance between one side of the floor beam 3 and the joint of the first yielding section 1 and the second yielding section 2 is not less than 100 mm. During specific implementation, the two ends of the coupling beam structure are provided with the first shear wall 4 and the second shear wall 5, the steel rib 8 is arranged in the first shear wall 4, and the steel rib 9 can be made of section steel, so that the connection strength of the rear yield section 2 and the first shear wall 4 is increased.
Specifically, the sectional type connecting beam is additionally provided with a beam surface bending-resistant reinforcing steel bar 6 and a beam bottom bending-resistant reinforcing steel bar 7, the beam surface bending-resistant reinforcing steel bar 6 and the beam bottom bending-resistant reinforcing steel bar 7 extend out of two ends of the sectional type connecting beam and are bent, the extending length is less than or equal to 600mm, and the length of the bent section is not less than 15 times of the diameter of the bent section. During specific implementation, the parts of the beam surface bending-resistant reinforcing steel bars 6 and the beam bottom bending-resistant reinforcing steel bars 7 extending out of the two ends of the sectional type connecting beam are positioned in the first shear wall 4 and the second shear wall 5, so that the overall strength is enhanced.
In particular to a reinforced concrete coupling beam structure, the distance between the stirrups of the rear yielding section is 100 mm.
Specifically, the rigidity reduction coefficient of the first yielding section 1 is 0.6-0.8, and the rigidity amplification coefficient of the second yielding section 2 is 1.5-2.0.
The utility model discloses specific embodiment's design process as follows:
(1) modeling calculation, designing the section required by the connecting beam, the size of the steel bar in the connecting beam, the size of the I-shaped steel 8 and the like;
(2) during structural elasticity analysis, the rigidity of the first yield section 1 of the connecting beam is reduced, the reduction coefficient is not less than 0.6, the reduction coefficient is generally recommended to be 0.7 when the fortification intensity is 6 and 7 degrees, and the reduction coefficient is 0.6 when the fortification intensity is 8 and 9 degrees; the rigidity of the yield section 2 behind the coupling beam is amplified, and the amplification factor is recommended to be 1.5-2.0.
(3) The length of the beam surface bending-resistant reinforcing steel bars 6 and the beam bottom bending-resistant reinforcing steel bars 7 extending into the shear wall is less than or equal to 600mm, and the reinforcing steel bars need to be bent, the bending length is not less than 15d, and d is the diameter of the reinforcing steel bars.
(4) And positioning and welding the I-shaped steel 8 in the rear buckling section 2 on a steel rib 9 of the shear wall.
(5) The elastic-plastic analysis is adopted for verification, so that the yield section 2 basically keeps elasticity under the middle earthquake, the yield section 2 is slightly damaged under the large earthquake, and the yield section 1 can generate plastic hinge.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention, and all the technical solutions and the improvement concepts should be covered by the protection scope of the present invention.
Claims (4)
1. A reinforced concrete coupling beam structure is characterized by comprising a sectional coupling beam and a floor beam; the sectional type coupling beam comprises a first yielding section (1) and a second yielding section (2) which are connected with each other, the floor beam is horizontally and vertically supported on the second yielding section, an I-shaped steel (8) is arranged in the second yielding section (2), one end of the I-shaped steel (8) is welded on a steel rib (9), and the other end transversely penetrates through the end part of the floor beam; longitudinal ribs (11) and stirrups (10) are arranged in the first yielding section (1) and the second yielding section (2); the density of the stirrup (10) on the rear yielding section is greater than that of the first yielding section (1); the distance between one side of the floor beam (3) and the joint of the first yielding section (1) and the second yielding section (2) is not less than 100 mm.
2. A reinforced concrete coupling beam structure according to claim 1, wherein a beam face bending-resistant reinforcing bar (6) and a beam bottom bending-resistant reinforcing bar (7) are attached to the sectional coupling beam, the beam face bending-resistant reinforcing bar (6) and the beam bottom bending-resistant reinforcing bar (7) are extended from both ends of the sectional coupling beam and bent, the extended length is less than or equal to 600mm, and the length of the bent section is not less than 15 times of the diameter thereof.
3. A reinforced concrete coupling beam structure according to claim 1, wherein the rear yielding section (2) stirrup spacing is 100 mm.
4. A reinforced concrete coupling beam structure according to claim 1, wherein the stiffness reduction coefficient of the first yielding segment (1) is 0.6-0.8, and the stiffness amplification coefficient of the second yielding segment (2) is 1.5-2.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021984368.3U CN212613376U (en) | 2020-09-11 | 2020-09-11 | Reinforced concrete coupling beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021984368.3U CN212613376U (en) | 2020-09-11 | 2020-09-11 | Reinforced concrete coupling beam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212613376U true CN212613376U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021984368.3U Active CN212613376U (en) | 2020-09-11 | 2020-09-11 | Reinforced concrete coupling beam structure |
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|---|---|
| CN (1) | CN212613376U (en) |
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2020
- 2020-09-11 CN CN202021984368.3U patent/CN212613376U/en active Active
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