CN108756411B - Eccentric supporting structure of tree-shaped column - Google Patents
Eccentric supporting structure of tree-shaped column Download PDFInfo
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- CN108756411B CN108756411B CN201810541702.9A CN201810541702A CN108756411B CN 108756411 B CN108756411 B CN 108756411B CN 201810541702 A CN201810541702 A CN 201810541702A CN 108756411 B CN108756411 B CN 108756411B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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Abstract
The invention discloses an eccentric supporting structure of a tree-shaped column, which is characterized in that a first channel steel supporting beam is additionally arranged between an I-shaped section supporting beam and an I-shaped section variable beam, a second channel steel supporting beam is additionally arranged between the first channel steel supporting beam and the I-shaped section variable beam, so that the first channel steel supporting beam, the I-shaped section supporting beam and the I-shaped section variable beam form a triangular stable structure, the second channel steel supporting beam, the first channel steel supporting beam and the I-shaped section variable beam form a triangular stable structure, a tree-shaped column supporting structure is formed, a larger span space is formed by smaller rod pieces through multi-stage branching conversion, and a connecting node of a non-energy-consuming beam section and a column is connected with the I-shaped section variable beam through the tree-shaped column supporting structure, so that the connecting node of the non-energy-consuming beam section and the column can cooperatively deform with the I-shaped section support and bear the, the safety of the non-energy-consumption beam end is ensured, the stress is reasonable, and the earthquake energy can be effectively consumed under the action of earthquake load.
Description
Technical Field
The invention relates to the technical field of engineering construction, in particular to an eccentric supporting structure of a tree-shaped column.
Background
The eccentric supporting structure is a structural lateral force resisting system which has high rigidity, good earthquake resistance and reasonable force transmission path. In the eccentric supporting structure, when the energy dissipation beam section is subjected to inelastic deformation, the end part of the non-energy dissipation beam section bears larger axial force and bending moment, so that the non-energy dissipation beam section can be subjected to yielding or breaking.
At present, scholars at home and abroad make a great deal of research on the performance of the eccentric supporting structure. The following are found: 1. when the energy dissipation beam section is seriously fractured at a web and bent at a flange, the ductility and the energy dissipation capability of the energy dissipation beam section directly influence the anti-seismic performance of the structure 2, under the action of reciprocating load, the energy dissipation beam section can generate various damage forms and dissipate all seismic energy, and 3, under the action of axial force and bending moment, the end part of the non-energy dissipation beam section can be seriously damaged, and the anti-seismic performance of the structure can be influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the eccentric support structure of the tree-shaped column, which can bear the stress of part of non-energy-consuming beam ends, ensure the safety of the non-energy-consuming beam ends and effectively consume the seismic energy under the action of seismic load.
To solve the above technical problems, the present invention provides an eccentric support structure for a tree-shaped column, comprising
The I-shaped cross section supporting beams are symmetrically and obliquely arranged below the I-shaped variable cross section beam through the supporting piers and used for providing supporting force for the I-shaped variable cross section beam;
the first channel steel supporting beam is arranged between the I-shaped cross section supporting beam and the I-shaped variable cross section beam, one end of the first channel steel supporting beam is supported on the I-shaped cross section supporting beam, the other end of the first channel steel supporting beam is supported on the I-shaped variable cross section beam, and the first channel steel supporting beam, the I-shaped cross section supporting beam and the I-shaped variable cross section beam form a triangular stable structure; and
the second channel steel supporting beam is arranged between the first channel steel supporting beam and the I-shaped variable cross-section beam, one end of the second channel steel supporting beam is supported on the first channel steel supporting beam, the other end of the second channel steel supporting beam is supported on the I-shaped variable cross-section beam, and the second channel steel supporting beam, the first channel steel supporting beam and the I-shaped variable cross-section beam form a triangular stable structure.
Preferably, a stiffening rib component is arranged on a supporting point of the I-shaped variable cross-section beam, which supports the I-shaped variable cross-section beam relative to the I-shaped cross-section supporting beam.
Preferably, the stiffening rib part comprises a plurality of longitudinal stiffening ribs and a transverse stiffening rib which vertically penetrates through the longitudinal stiffening ribs, and two ends of the longitudinal stiffening ribs are abutted and supported on the upper and lower symmetrical flanges of the I-shaped variable cross-section beam.
Preferably, the width of the beam body of the I-shaped variable cross-section beam at the midspan part between the supporting points of the I-shaped cross-section supporting beams adjacent to the supporting pier columns is greater than the width of the beam body of the I-shaped variable cross-section beam between the supporting points of the I-shaped cross-section supporting beams symmetrically arranged on the same supporting pier column.
Preferably, one end of the I-shaped section supporting beam is fixedly connected with the supporting pier stud through a gusset plate, and the gusset plates supporting the pier stud are connected through a prestressed steel strand.
Preferably, a stranded wire connecting plate is vertically arranged on the node plate, and a plurality of stranded wire connecting holes are formed in the stranded wire connecting plate.
Preferably, one side of the stranded wire connecting plate relative to the connecting direction of the prestressed steel stranded wires is provided with a plurality of supporting plates which are vertically arranged with the stranded wire connecting plate.
According to the eccentric support structure of the tree-shaped column, the first channel steel support beam is additionally arranged between the I-shaped cross section support beam and the I-shaped variable cross section beam, the second channel steel support beam is additionally arranged between the first channel steel support beam and the I-shaped variable cross section beam, so that the tree-shaped column support structure is formed, a large-span space is formed by using smaller rods through multi-stage branching conversion, and the tree-shaped column support structure is connected with the I-shaped variable cross section beam, so that the connecting node of the non-energy-consuming beam section and the column is cooperatively deformed with the I-shaped cross section support, the stress of part of the non-energy-consuming beam end can be borne, the safety of the non-energy-consuming beam end is ensured, the stress is reasonable, and the seismic energy can be effectively consumed under the action.
Drawings
FIG. 1 is a schematic structural diagram of an eccentric support structure of a tree-like column according to embodiment 1 of the present invention;
FIG. 2 is an enlarged perspective view of portion A of FIG. 1;
fig. 3 is a schematic structural diagram of an eccentric support structure of a tree-shaped column in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an eccentric supporting structure of a tree-shaped column, which comprises
The I-shaped cross section supporting beam 3 is symmetrically and obliquely arranged below the I-shaped variable cross section beam 2 through the supporting pier stud 9 and used for providing supporting force for the I-shaped variable cross section beam 2;
the first channel steel supporting beam 4 is arranged between the I-shaped cross section supporting beam 3 and the I-shaped variable cross section beam 2, one end of the first channel steel supporting beam 4 is supported on the I-shaped cross section supporting beam 3, the other end of the first channel steel supporting beam 4 is supported on the I-shaped variable cross section beam 2, and the first channel steel supporting beam 4, the I-shaped cross section supporting beam 3 and the I-shaped variable cross section beam 2 form a triangular stable structure; and
the second channel steel supporting beam 5 is arranged between the first channel steel supporting beam 4 and the I-shaped variable cross-section beam 2, one end of the second channel steel supporting beam 5 is supported on the first channel steel supporting beam 4, the other end of the second channel steel supporting beam 5 is supported on the I-shaped variable cross-section beam 2, and the second channel steel supporting beam 5, the first channel steel supporting beam 4 and the I-shaped variable cross-section beam 2 form a triangular stable structure.
Example 1
The I-shaped section supporting beam 3, the I-shaped section variable beam 2 and the H-shaped section variable column 1 form a triangular stable structure, the first channel steel supporting beam 4, the I-shaped section variable beam 3 and the I-shaped section variable beam 2 form a triangular stable structure, the second channel steel supporting beam 5, the first channel steel supporting beam 4 and the I-shaped section variable beam 2 form a triangular stable structure, the first channel steel supporting beam 4 and the second channel steel supporting beam 5 form a tree-shaped column supporting structure, a smaller rod piece is used for forming a larger span space after multi-stage branching conversion, and the tree-shaped column supporting structure is connected with the I-shaped section variable beam 2, so that a connecting node of a non-energy-consuming beam section and a column is cooperatively deformed with the I-shaped section support, the stress of part of the non-energy-consuming beam end can be borne, the safety of the non-energy-consuming beam end is ensured, the stress is reasonable, and under the action of earthquake load, seismic energy can be effectively consumed. Preferably, both ends of the first channel steel supporting beam 4 and the second channel steel supporting beam 5 are connected in a rigid connection mode.
The beam body of the I-shaped variable cross-section beam 2 at the midspan part between the supporting points of the I-shaped cross-section supporting beams 3 adjacent to the supporting pier stud 9 is an energy-consuming beam section, the beam body of the I-shaped variable cross-section beam 2 between the supporting points of the I-shaped cross-section supporting beams 3 symmetrically arranged on the same supporting pier stud 9 is a non-energy-consuming beam section, the width of the beam body of the energy-consuming beam section is larger than that of the beam body of the non-energy-consuming beam section, the energy-consuming beam section is reinforced by adopting the section of a wide-flange high-web plate, the bending and shearing bearing capacity of the energy-consuming beam section is improved by increasing the thickness of the web plate and the width of the flange of the.
A stiffening rib component 6 is arranged on a supporting point of the I-shaped variable cross-section beam 2, which supports the I-shaped variable cross-section beam, relative to the I-shaped cross-section supporting beam 3, the stiffening rib component 6 comprises a plurality of longitudinal stiffening ribs and a transverse stiffening rib which vertically penetrates through the longitudinal stiffening ribs, the longitudinal stiffening ribs are welded in the area of the I-shaped variable cross-section beam 2 at the wide flange high web plate, and the stiffening rib component 6 is added, so that the reinforcing effect is realized on the shear mutation caused by the I-shaped support at the variable cross-section, the bending and shearing bearing capacity of the energy-consuming beam section is improved, and the safety of the connecting part of the energy-consuming beam section and the non-energy-consuming beam section of; and the end part of the non-energy-consuming beam section is reinforced through the stiffening rib component 6, so that the local damage of the beam is effectively prevented, and the integral working performance of the beam is ensured.
One end of the I-shaped section supporting beam 3 is fixedly connected with a supporting pier stud 9 through a gusset plate 7, and the gusset plates 7 supporting the pier stud 9 are connected through a prestressed steel strand 8. Wherein, as shown in fig. 2, gusset plate 7 adopts the cusp for increase welding seam length guarantees that the intensity of junction is enough, just be equipped with stranded conductor connecting plate 71 on the gusset plate 7 perpendicularly, be equipped with a plurality of stranded conductor connecting holes 73 on the stranded conductor connecting plate 71, for guaranteeing the steadiness of stranded conductor connecting plate 71, one side of the relative prestressing force stranded conductor 8 joint direction of stranded conductor connecting plate 71 is equipped with a plurality of backup pads 72 that set up perpendicularly with gusset plate 7 and stranded conductor connecting plate 71 simultaneously.
And the prestressed steel strands 8 are arranged among the gusset plates 7 for connection, so that the prestressed steel strands 8, the I-shaped section supporting beam 3 and the energy consumption beam section form a quadrilateral whole, internal forces in the horizontal direction are mutually offset, and the stress of the column is reduced.
According to the eccentric support structure of the tree-shaped column, the first channel steel support beam 4 is additionally arranged between the I-shaped cross section support beam 3 and the I-shaped variable cross section beam 2, the second channel steel support beam 5 is additionally arranged between the first channel steel support beam 4 and the I-shaped variable cross section beam 2, so that the tree-shaped column support structure is formed, a large-span space is formed by small rod pieces through multi-stage branching conversion, and the tree-shaped column support structure is connected with the I-shaped variable cross section beam 2, so that the connecting node of a non-energy-consuming beam section and a column is cooperatively deformed with the I-shaped cross section support, the stress of part of the non-energy-consuming beam end can be borne, the safety of the non-energy-consuming beam end is guaranteed, the stress is reasonable, and the earthquake energy can be effectively consumed under the action.
Example 2
The embodiment 2 of the invention provides another eccentric supporting structure of a tree-shaped column, which belongs to a multi-span supporting structure, and as shown in fig. 3, the eccentric supporting structure of the tree-shaped column is different from that provided in the embodiment 1 in that an H-shaped variable cross-section column 1 is vertically arranged on a head supporting pier 9 and a tail supporting pier 9, a plurality of transitional supporting piers 9 are arranged between the head supporting pier 9 and the tail supporting pier 9, and an i-shaped cross-section supporting beam 3 is symmetrically and obliquely arranged below the i-shaped variable cross-section beam 2 through the transitional supporting piers 9 to provide a cross-section force for the i-shaped variable cross-section beam 2, specifically, one end of the i-shaped cross-section supporting beam 3 is supported on the H-shaped variable cross-section column 1, and the other end is supported on the i-shaped variable cross-section.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (4)
1. An eccentric supporting structure of a tree-shaped column is characterized by comprising an H-shaped variable cross-section column, a plurality of supporting pier columns, an I-shaped cross-section supporting beam, an I-shaped variable cross-section beam, a first channel steel supporting beam arranged between the I-shaped cross-section supporting beam and the I-shaped variable cross-section beam and a second channel steel supporting beam arranged between the first channel steel supporting beam and the I-shaped variable cross-section beam;
the H-shaped variable cross-section columns are vertically arranged on the head support pier columns and the tail support pier columns relatively, the I-shaped variable cross-section beam is horizontally arranged between the H-shaped variable cross-section columns, a plurality of transition support pier columns are arranged between the head support pier columns and the tail support pier columns, the I-shaped cross-section support beam is symmetrically and obliquely arranged below the I-shaped variable cross-section beam through the head support pier columns, the tail support pier columns and the transition support pier columns, one end of the I-shaped cross-section support beam is supported on the H-shaped variable cross-section columns, and the other end of the I-shaped cross-section support beam is supported on the I-shaped variable;
one end of the first channel steel supporting beam is supported on the I-shaped cross section supporting beam, the other end of the first channel steel supporting beam is supported on the I-shaped variable cross section beam, and the first channel steel supporting beam, the I-shaped cross section supporting beam and the I-shaped variable cross section beam form a triangular stable structure; and
one end of the second channel steel supporting beam is supported on the first channel steel supporting beam, the other end of the second channel steel supporting beam is supported on the I-shaped variable cross-section beam, and the second channel steel supporting beam, the first channel steel supporting beam and the I-shaped variable cross-section beam form a triangular stable structure;
one end of the I-shaped section supporting beam is fixedly connected with the supporting pier stud through a gusset plate, the gusset plate is toothed, and the gusset plates for supporting the pier stud are connected through a prestressed steel strand;
the joint plate is vertically provided with a stranded wire connecting plate, the stranded wire connecting plate is provided with a plurality of stranded wire connecting holes, and for ensuring the stability of the stranded wire connecting plate, one side of the relative prestress steel stranded wire connecting direction of the stranded wire connecting plate is provided with a plurality of supporting plates which are vertically arranged with the joint plate and the stranded wire connecting plate.
2. The eccentric support structure of a tree post according to claim 1, wherein the i-section variable cross-section beam is provided with a stiffener member at a supporting point thereof with respect to the i-section support beam.
3. The eccentric bracing structure according to claim 2, wherein said stiffening rib members comprise a plurality of longitudinal stiffening ribs and a transverse stiffening rib passing perpendicularly through said longitudinal stiffening ribs, both ends of said longitudinal stiffening ribs being supported in abutment against upper and lower symmetrical flanges of the i-beam.
4. The eccentric support structure of a tree column according to claim 1, wherein the width of the beam body of the i-shaped variable cross-section beam at the midspan part between the support points of the i-shaped cross-section support beams of adjacent support piers is greater than the width of the beam body of the i-shaped variable cross-section beam between the support points of the i-shaped cross-section support beams symmetrically arranged on the same support pier.
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| CN201810541702.9A CN108756411B (en) | 2018-05-30 | 2018-05-30 | Eccentric supporting structure of tree-shaped column |
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| CN201810541702.9A CN108756411B (en) | 2018-05-30 | 2018-05-30 | Eccentric supporting structure of tree-shaped column |
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| CN108756411B true CN108756411B (en) | 2020-06-16 |
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| CN110735538B (en) * | 2019-08-20 | 2023-01-31 | 东南大学 | Assembly type reinforcing structure with external contact surface energy consumption of existing structure |
| CN112609852B (en) * | 2020-11-12 | 2022-06-28 | 中国建筑第八工程局有限公司 | Connecting structure for viscous damping wall to be mounted on building main body |
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| JP3800476B2 (en) * | 1998-04-27 | 2006-07-26 | 清水建設株式会社 | Earthquake resistant building |
| JP5340998B2 (en) * | 2010-03-03 | 2013-11-13 | 長岡鉄工株式会社 | Construction method of seismic reinforcement steel brace |
| JP6074132B2 (en) * | 2011-05-27 | 2017-02-01 | 大和ハウス工業株式会社 | Damping brace joint structure |
| JP6327436B2 (en) * | 2014-01-07 | 2018-05-23 | 清水建設株式会社 | Building damping structure and building equipped with the same |
| JP6265422B2 (en) * | 2014-04-15 | 2018-01-24 | 株式会社グレイプ | Reinforcement structure and building |
| KR101670548B1 (en) * | 2014-10-29 | 2016-10-31 | 서울시립대학교 산학협력단 | Buckling-Restrained Braces |
| US9689173B2 (en) * | 2015-09-01 | 2017-06-27 | Hory Corporation | Structure attached with vibration control device |
| CN106703285B (en) * | 2016-12-13 | 2018-12-04 | 国核电力规划设计研究院 | A kind of shearing-type accentric support active beam link structure |
| CN206941801U (en) * | 2017-05-09 | 2018-01-30 | 北京建筑大学 | A kind of assembled accentric support steel frame system of replaceable dissipative links |
| CN107700691B (en) * | 2017-08-30 | 2019-07-05 | 国核电力规划设计研究院有限公司 | A kind of shearing-type eccentrically braces structure |
| CN107939133B (en) * | 2017-10-23 | 2019-08-30 | 国核电力规划设计研究院有限公司 | A kind of shearing-type eccentrically braces structure of thermal power plant bunker bay |
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