CN210369312U - Steel column base connection structure - Google Patents
Steel column base connection structure Download PDFInfo
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- CN210369312U CN210369312U CN201920617423.6U CN201920617423U CN210369312U CN 210369312 U CN210369312 U CN 210369312U CN 201920617423 U CN201920617423 U CN 201920617423U CN 210369312 U CN210369312 U CN 210369312U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 152
- 239000010959 steel Substances 0.000 title claims abstract description 152
- 210000002435 tendon Anatomy 0.000 claims abstract description 16
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 2
- 239000003351 stiffener Substances 0.000 claims 2
- 230000000452 restraining effect Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 12
- 230000006378 damage Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本实用新型涉及抗震结构工业化技术领域，提供一种钢柱柱脚连接结构，包括钢柱、预埋工字钢梁、预应力筋和屈曲约束板。预埋工字钢梁的底面预埋于混凝土梁中，钢柱与预埋工字钢梁相垂直连接；钢柱的下部设置有加劲肋，预应力筋一端连接加劲肋，另一端连接预埋工字钢梁的顶面；屈曲约束板包括横向板和竖向板，横向板与预埋工字钢梁的顶面相连接，竖向板与钢柱相连接。本实用新型提供的钢柱柱脚连接结构，地震作用下钢柱产生摇摆时，预应力筋能够通过预应力使钢柱快速回复原位，为钢柱提供自复位性能；屈曲约束板通过塑性变形吸收一定的地震能量，减少对主体构件的影响，从而能够显著提高柱脚连接的耗能能力，并实现震后的快速自复位功能。
The utility model relates to the technical field of seismic structure industrialization, and provides a steel column and column foot connection structure, which comprises a steel column, a pre-embedded I-beam, a prestressed tendon and a buckling restraint plate. The bottom surface of the pre-buried I-beam is pre-buried in the concrete beam, and the steel column is connected to the pre-buried I-beam perpendicularly; the lower part of the steel column is provided with a stiffening rib, one end of the pre-stressed rib is connected to the stiffening rib, and the other end is connected to the embedded I-beam. The top surface of the I-beam; the buckling restraint plate includes a transverse plate and a vertical plate, the transverse plate is connected with the top surface of the embedded I-beam, and the vertical plate is connected with the steel column. In the steel column and column foot connection structure provided by the utility model, when the steel column sways under the action of earthquake, the prestressed tendons can quickly restore the steel column to the original position through the prestress, and provide self-reset performance for the steel column; the buckling restraint plate is plastically deformed. It absorbs a certain amount of seismic energy and reduces the impact on the main components, so that the energy dissipation capacity of the column foot connection can be significantly improved, and the rapid self-resetting function after the earthquake can be realized.
Description
Technical Field
The utility model relates to an anti-seismic structure industrialization technical field especially relates to a steel column base connection structure.
Background
The prefabricated building formed by splicing the prefabricated components on site can effectively improve the construction efficiency, has the advantages of reducing the labor cost, saving energy, protecting environment, reducing pollution and the like, is suitable for the trend of new urbanization, meets the development requirement of the current society, and has become a wide consensus of the whole society by vigorously advocating and developing the prefabricated building.
Prefabricated parts of prefabricated buildings comprise concrete prefabricated parts and steel structure prefabricated parts, and the prefabricated steel columns are connected with concrete foundations in engineering practice. The existing steel column base connection generally adopts a direct drilling connection method, a steel bar in column direct connection method, a U-shaped hoop connection method and other methods to directly anchor the column base on a concrete foundation through an anchor bolt, the connection rigidity is high, the connection node is not allowed to generate relative rotation in principle, once a corner is generated between a steel column and a concrete beam, the original position cannot be quickly restored, and the force transmission performance is changed; the rigid connection of traditional steel column and concrete beam dissipates seismic energy through plastic deformation of steel column or destruction of concrete beam etc. and its anti-seismic performance is poor, and it is comparatively difficult to repair after the earthquake simultaneously.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a steel column base connection structure for solve or partly solve traditional steel column base and connect and allow to warp for a short time, antidetonation, damping performance are poor, are difficult to restore the scheduling problem after the column base destroys.
The embodiment of the utility model provides a steel column base connecting structure, which comprises a steel column, a pre-buried I-shaped steel beam, a prestressed tendon and a buckling restrained plate;
the bottom surface of the embedded I-shaped steel beam is embedded in the concrete beam, and the steel column is vertically connected with the embedded I-shaped steel beam; stiffening ribs are arranged at the lower parts of the steel columns, one ends of the prestressed ribs are connected with the stiffening ribs, and the other ends of the prestressed ribs are connected with the top surfaces of the pre-buried I-shaped steel beams; the buckling constraint plate comprises a transverse plate and a vertical plate, the transverse plate is connected with the top surface of the embedded I-shaped steel beam, and the vertical plate is connected with the steel column.
The steel column is connected with the bottom surface of the embedded I-shaped steel beam, a bottom plate is arranged between the steel column and the top surface of the embedded I-shaped steel beam, the upper surface of the bottom plate is connected with the bottom surface of the steel column, and a chamfer is arranged on the edge of the lower surface of the bottom plate.
And a rubber pad is arranged between the bottom plate and the top surface of the embedded I-shaped steel beam.
And an anti-corrosion and moisture-proof layer is arranged between the rubber pad and the top surface of the pre-buried I-shaped steel beam.
The buckling constraint plates are multiple, the transverse plates and the vertical plates are perpendicular to each other and are integrally formed, the transverse plates are connected with the top surfaces of the embedded I-shaped steel beams through bolts, and the vertical plates are connected with the vertical outer surfaces of the steel columns through bolts.
And a reinforcing plate is further arranged between the vertical plate and the vertical outer surface of the steel column.
And a rib plate cover is further arranged on one side surface of the vertical plate, which is far away from the steel column, and is connected with the vertical plate through bolts, and vertical ribs are arranged on the rib plate cover.
Wherein, the steel column cross-section is H shape.
The prestressed ribs are provided with a plurality of prestressed ribs, and a rigid backing plate is arranged at the anchorage device connecting the prestressed ribs and the stiffening ribs.
And a heat insulation layer is arranged between the top surface of the embedded I-shaped steel beam and the concrete beam.
The embodiment of the utility model provides a steel column base connection structure, pre-buried base as the steel column installation in the pre-buried I-shaped steel roof beam of concrete beam. The lower part of the steel column is provided with a stiffening rib, and the stiffening rib is connected with the top surface of the pre-buried I-shaped steel beam through a tensioned prestressed rib; the vertical plate of the buckling restrained plate is connected and fixed with the steel column, and the transverse plate of the buckling restrained plate is connected and fixed with the top surface of the pre-buried I-shaped steel beam. The prestressed tendons have certain retraction characteristics, and the buckling restrained plate is easy to plastically deform. When the steel column swings under the action of an earthquake, the prestressed tendons can enable the steel column to quickly return to the original position through prestress, and self-resetting performance is provided for the steel column; the buckling constraint plate can generate plastic deformation in advance compared with the steel column, and a certain amount of seismic energy is absorbed through the plastic deformation, so that the progress of the steel column entering the plasticity is delayed, and the damage to the main body structure is reduced; therefore, the energy consumption capacity of connection is remarkably improved, and the quick self-resetting function after the earthquake is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a steel column base connection structure provided in an embodiment of the present invention;
fig. 2 is a top view of a steel column base connection structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a buckling restrained plate according to an embodiment of the present invention;
in the figure: 1. embedding an I-shaped steel beam; 2. a steel column; 3. a buckling restrained plate; 4. prestressed tendons; 5. a stiffening rib; 6. a transverse plate; 7. a vertical plate; 8. a base plate; 9. a rubber pad; 10. a reinforcing plate; 11. a rib plate cover; 12. a rib; 13. a heat-insulating layer; 14. a concrete beam.
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. 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.
As shown in fig. 1-3, the embodiment of the utility model provides a steel column base connection structure, including steel column 2, still include pre-buried I-shaped steel roof beam 1, prestressing tendons 4 and the about board 3 of bucking. The bottom surface of the pre-buried I-shaped steel beam 1 is pre-buried in the concrete beam 14, and the steel column is vertically connected with the pre-buried I-shaped steel beam 1; the lower part of the steel column 2 is provided with a stiffening rib 5, one end of a prestressed tendon 4 is connected with the stiffening rib 5, and the other end is connected with the top surface of the pre-buried I-shaped steel beam 1; the buckling restrained plate 3 comprises a transverse plate 6 and a vertical plate 7, the transverse plate 6 is connected with the top surface of the embedded I-shaped steel beam 1, and the vertical plate 7 is connected with the steel column 2.
The embodiment of the utility model provides a steel column base connection structure, pre-buried base as the installation of steel column 2 in the pre-buried I-shaped steel roof beam 1 of concrete beam 14. The lower part of the steel column 2 is provided with a stiffening rib 5, and the stiffening rib 5 is connected with the top surface of the pre-buried I-shaped steel beam 1 through a tensioned prestressed rib 4; the vertical plate 7 of the buckling restrained plate 3 is connected and fixed with the steel column 2, and the transverse plate 6 of the buckling restrained plate 3 is connected and fixed with the top surface of the pre-buried I-shaped steel beam 1. The prestressed tendons 4 have certain retraction characteristics, and the buckling restrained plate 3 is easy to plastically deform. When the steel column 2 swings under the action of an earthquake, the prestressed tendons 4 can enable the steel column 2 to quickly return to the original position through prestress, and self-resetting performance is provided for the steel column 2; the buckling constraint plate 3 can generate plastic deformation in advance compared with the steel column 2, and absorb certain seismic energy through the plastic deformation, so that the progress of the steel column 2 entering the plastic property is delayed, and the damage to the main body structure is reduced; therefore, the energy consumption capacity of connection is remarkably improved, and the quick self-resetting function after the earthquake is realized.
In the steel column base connection structure provided by the embodiment of the utility model, a bottom plate 8 can be arranged between the top surfaces of the steel column 2 and the pre-buried i-shaped steel beam 1, so that the upper surface of the bottom plate 8 can be connected with the bottom surface of the steel column 2, for example, a steel plate is welded at the bottom surface end of the steel column 2 to form a base, so as to increase the contact area between the steel column 2 and the supporting surface below, reduce stress concentration and improve structural stability; bottom plate 8's lower surface edge can be equipped with the chamfer structure, for example sets up circular chamfer along 8 lower surface outward flanges of bottom plate, and when steel column 2 took place to rotate under the external load effect, steel column 2 can have a small rotation space, avoids bottom plate 8 and below holding surface to produce stress concentration and causes the harm.
Further, the embodiment of the utility model provides a steel column base connection structure can also be equipped with rubber pad 9 between the top surface of bottom plate 8 and pre-buried I-shaped steel roof beam 1. When the steel column 2 sways, the rubber pad 9 can play a role in buffering, and large stress concentration is prevented. In addition, before the steel column 2 is connected with the embedded I-shaped steel beam 1, an anti-corrosion moisture-proof layer can be laid on the top surface of the embedded I-shaped steel beam 1, and the anti-corrosion moisture-proof layer can be arranged between the rubber pad 9 and the top surface of the embedded I-shaped steel beam 1 so as to effectively prevent the corrosion of rigid components at the connecting part and enhance the structural durability.
The embodiment of the utility model provides a steel column base connection structure, the about board 3 of bucking can have a plurality ofly, along 2 column bases circumference distributions of steel column, forms comprehensive circumference restraint to steel column 2. As shown in fig. 3, the transverse plate 6 and the vertical plate 7 of the buckling-restrained plate 3 may be formed by vertical integration, the transverse plate 6 is connected with the top surface of the embedded i-beam 1 by bolts, the vertical plate 7 is connected with the vertical outer surface of the steel column 2 by bolts, and the bolts may be high-strength bolts. The buckling restrained plate 3 has the working principle that energy consumption is carried out through tensile yielding and reverse buckling of the plate at the position of a small section, and then seismic energy is absorbed through plastic deformation, so that the purpose of protecting the main body structure is achieved. The section width of the vertical plate 7 part of the buckling restrained plate 3 is reduced in the middle part, and a dumbbell shape with two wide ends and a narrow middle part is formed, so that the part with the narrow middle part is easy to be stretched, buckled or compressed and buckled, and external energy is absorbed through buckling and buckling. Further, a reinforcing plate 10 can be arranged between the vertical outer surface of the steel column 2 and the vertical plate 7, and the steel column 2 is prevented from generating premature plastic deformation due to stress concentration caused by local stress of the column foot in the swinging process through the arrangement of the reinforcing plate 10. Vertical plate 7 deviates from one side surface of steel column 2 and can also be equipped with floor cover 11, floor cover 11 and vertical plate 7 bolted connection, and the bolt can pass floor cover 11 and vertical plate 7 in proper order and with floor cover 11 and vertical plate 7 fixed mounting and 2 column bases of steel column, is equipped with vertical rib 12 on floor cover 11. For example, a T-shaped cover plate is attached to the outer side surface of the vertical plate 7 of the buckling restrained plate 3, which is away from the steel column 2, the cross section of the T-shaped cover plate in the horizontal direction is T-shaped, the top horizontal surface of the T-shaped cover plate is a rib plate cover 11, and the ribs 12 are the lower vertical surface of the T-shaped cover plate. By providing the rib cover 11 and the ribs 12, the buckling-restrained plate 3 can be prevented from being prematurely buckled out-of-plane to reduce its plastic deformation capability.
The embodiment of the utility model provides a steel column base connection structure, steel column 2 can adopt the cross-section to be the H shaped steel post 2 of H shape. The prestressed tendons 4 can be multiple, and the multiple prestressed tendons 4 can be uniformly distributed on the section of the steel column 2, for example, symmetrically distributed on two sides of the H-shaped steel column 2; the anchorage device connecting the prestressed reinforcing steel 4 and the stiffening rib 5 can be provided with a rigid backing plate to uniformly distribute the tension force at the anchorage device and transmit the tension force to the stiffening rib 5, so as to prevent stress concentration. The bottom surface of the pre-buried I-shaped steel beam 1 is pre-buried in the concrete beam 14, a reserved space for installing an anchorage device below the prestressed tendon 4 is formed between the top surface of the pre-buried I-shaped steel beam 1 and the concrete beam 14, and after the steel column 2 and the pre-buried I-shaped steel beam 1 are assembled, the reserved space can be filled with heat-insulating materials to form a heat-insulating layer 13, so that the influence of the internal and external temperature difference on the steel structure connecting member is reduced.
Can see by above embodiment, the utility model provides a steel column base connection structure, pre-buried base as the installation of steel column 2 in the pre-buried I-shaped steel roof beam 1 of concrete beam 14. The lower part of the steel column 2 is provided with a stiffening rib 5, and the stiffening rib 5 is connected with the top surface of the pre-buried I-shaped steel beam 1 through a tensioned prestressed rib 4; the vertical plate 7 of the buckling restrained plate 3 is connected and fixed with the steel column 2, and the transverse plate 6 of the buckling restrained plate 3 is connected and fixed with the top surface of the pre-buried I-shaped steel beam 1. The prestressed tendons 4 have certain retraction characteristics, and the buckling restrained plate 3 is easy to plastically deform. When the steel column 2 swings under the action of an earthquake, the prestressed tendons 4 can enable the steel column 2 to quickly return to the original position through prestress, and self-resetting performance is provided for the steel column 2; the buckling constraint plate 3 can generate plastic deformation in advance compared with the steel column 2, and absorb certain seismic energy through the plastic deformation, so that the progress of the steel column 2 entering the plastic property is delayed, and the damage to the main body structure is reduced; therefore, the energy consumption capacity of connection is remarkably improved, and the quick self-resetting function after the earthquake is realized. Further, structures such as a bottom plate 8, a rubber pad 9, an anti-corrosion and moisture-proof layer and the like can be arranged between the steel column 2 and the top surface of the pre-buried I-shaped steel beam 1; the bolt can pass ribbed plate lid 11, vertical plate 7 and reinforcing plate 10 in proper order to with ribbed plate lid 11, vertical plate 7 and 10 fixed mounting in 2 column bases of steel column, with further perfecting the utility model discloses a 2 column bases connection structure of steel column improves its power consumption ability and self-resuming ability.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617423.6U CN210369312U (en) | 2019-04-30 | 2019-04-30 | Steel column base connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617423.6U CN210369312U (en) | 2019-04-30 | 2019-04-30 | Steel column base connection structure |
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| Publication Number | Publication Date |
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| CN210369312U true CN210369312U (en) | 2020-04-21 |
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| CN201920617423.6U Expired - Fee Related CN210369312U (en) | 2019-04-30 | 2019-04-30 | Steel column base connection structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016965A (en) * | 2019-04-30 | 2019-07-16 | 北京建筑大学 | Steel column foot connection structure |
| CN114263378A (en) * | 2021-12-24 | 2022-04-01 | 深圳供电局有限公司 | A combined structure semi-underground substation |
-
2019
- 2019-04-30 CN CN201920617423.6U patent/CN210369312U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016965A (en) * | 2019-04-30 | 2019-07-16 | 北京建筑大学 | Steel column foot connection structure |
| CN114263378A (en) * | 2021-12-24 | 2022-04-01 | 深圳供电局有限公司 | A combined structure semi-underground substation |
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