CN105821961A - T-shaped beam column connecting joint - Google Patents

T-shaped beam column connecting joint Download PDF

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Publication number
CN105821961A
CN105821961A CN201610344129.3A CN201610344129A CN105821961A CN 105821961 A CN105821961 A CN 105821961A CN 201610344129 A CN201610344129 A CN 201610344129A CN 105821961 A CN105821961 A CN 105821961A
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CN
China
Prior art keywords
steel tube
column
steel
connected node
plate
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Granted
Application number
CN201610344129.3A
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Chinese (zh)
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CN105821961B (en
Inventor
郝际平
孙晓岭
张伟
薛强
樊春雷
黄育琪
刘斌
陈永昌
王磊
尹伟康
刘瀚超
何梦楠
张峻铭
赵子健
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN201610344129.3A priority Critical patent/CN105821961B/en
Publication of CN105821961A publication Critical patent/CN105821961A/en
Application granted granted Critical
Publication of CN105821961B publication Critical patent/CN105821961B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B1/1903Connecting nodes specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor
    • E04B1/215Connections specially adapted therefor comprising metallic plates or parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/58Connections for building structures in general of bar-shaped building elements

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention discloses a T-shaped beam column connecting joint. The T-shaped beam column connecting joint comprises a multi-cavity concrete filled steel tube combined column and side plates symmetrically arranged at the two side walls of the multi-cavity concrete filled steel tube combined column, inserting plates which penetrate through the side plate and are inserted into the multi-cavity concrete filled steel tube combined column are arranged on one side plate, and a reinforcing H-shaped steel combined beam is inserted into extending sections of the two side plates and the inserting plate to form the T-shaped beam column connecting joint. The joint serves as an edge restraint member of the whole concrete filled steel tube column and can improve bearing capacity, energy-dissipating capacity and ductility of the concrete filled steel tube column; on-site construction is convenient, the multi-cavity concrete filled steel tube combined column is not damaged, and materials and labor are saved. A steel tube has a strong restraint effect on concrete, the whole structure conforms to the design rule of matching strong columns with weak beams and matching strong joints with weak members, the joint has multiple anti-seismic fortifying lines, it is avoided that a whole system is damaged as part of members are damaged, and the joint has necessary strength, good deformability and good energy-dissipating capacity.

Description

A kind of tee girder column connected node
Technical field
The present invention relates to a kind of tee girder column connected node, the concrete filled steel tube coupled column of the multilayer structure being mainly used in building structure.
Background technology
Along with economic globalization, the raising of the level of urbanization, urban population closeness is gradually increased so that a large amount of high levels continue to bring out.This just high-rise in the urgent need to new technical support and design of tier building and construction.
Concrete filled steel tube utilizes steel pipe and the interaction in loading process of the concrete bi-material, i.e. steel pipe to make concrete be in complex stress condition the effect of contraction of concrete, so that the intensity of concrete is improved, plasticity and toughness greatly improve.Meanwhile, after steel duct fill concrete, due to the supporting role of concrete, can avoid or delay the flexing of steel pipe walls.The combination of bi-material compensate for respective shortcoming so that material property gives full play to.This structure can improve bearing capacity, has reduction wall thickness, the rate of decay of the bearing capacity and stiffness that slows down, and strengthens cylinder or the ductile performance of body of wall.
Along with development and the growth in the living standard of society, people are more and more higher to usable floor area and the cosmetic requirements of house.Traditional circle or Concrete Filled Square Steel Tubes post, be generally not capable of being surrounded by body of wall completely, the most prominent house interior of suspension column, takies certain interior space so that furnishings and room are arranged by a definite limitation.Use concrete filled steel rectangular tubes coupled column, can accomplish with wall with wide, solve the problem that post highlights corner angle.
Research shows, the concrete-filled rectangular steel tube coupled column of general type, steel pipe is only limitted to angle point to the constraint of core concrete, more weak at periphery, and bearing capacity is relatively low.Newel post is that the multi-cavity steel tube concrete coupled column of rectangular steel pipe arranges confining part to improve its bearing capacity and energy dissipation capacity at edge, horizontally set is put more energy into box construct, shaft is divided into some chambers, make steel plate that the effect of contraction of concrete to be strengthened, reduce the flakiness ratio of steel plate simultaneously, prevent or delay the cripling of steel plate.
Summary of the invention
It is an object of the invention to provide the tee girder column connected node of a kind of band ribbed stiffener concrete filled steel tube coupled column constructing simple, cheap, solve conventional post indoor and highlight the problem of corner angle, improve bearing capacity and the ductility of Multicarity concrete filled steel tube coupled column.Delay or avoid stiffness of structural member bearing capacity and the reduction of ductility caused due to steel pipe wallboard cripling, giving full play to the performance of material.Overall structure meets the design principle of " strong column and weak beam, the weak component of strong node ", and node possesses multiple tracks and provides fortification against earthquakes line, possesses intensity, good deformability and the energy dissipation capacity of necessity.
To achieve these goals, present invention employs following technical scheme:
A kind of tee girder column connected node, including multi-cavity steel tube concrete coupled column, and along the symmetrically arranged side plate in multi-cavity steel tube concrete coupled column two side, it is provided with along one of side plate and runs through side plate and be inserted therein the plate of side multi-cavity steel tube concrete coupled column, two pieces of side plate extensions and plate are inserted with reinforced H profile steel combination beam, constitute tee girder column connected node.
Further, described reinforced H profile steel combination beam includes H profile steel, and between the section steel flange of H profile steel end arrange two pieces of ribbed stiffeners, connect along the H profile steel web both sides inside ribbed stiffener and have the connector flushed with H profile steel edge a pair, H profile steel is respectively welded outside lower flange upper cover plate and lower cover.
Further, described connector is steel angle structure, bolt hole is distributed on the outer face of angle steel.
Further, described side plate is provided with the through hole corresponding with connector bolt hole.
Further, the width of described upper cover plate and lower cover is more than the width of lower flange in H profile steel.
Further, described ribbed stiffener uses three skirt solid weldings to be scheduled on the web both sides of H profile steel.
Further, described multi-cavity steel tube concrete coupled column is connected and composed with dividing plate by the web between sleeper and the sleeper at two ends, and concreting is wherein.
Further, described sleeper is hot finished steel pipe.
Further, described two blocks of side plates are fixed along multi-cavity steel tube concrete coupled column both sides level, and two blocks of plates are fitted along sleeper both sides, two ends.
The present invention can obtain following beneficial effect:
1) reinforced H profile steel combination beam forms node with multi-cavity steel tube concrete coupled column, constitutes beam and multi-cavity steel tube concrete coupled column forms the form that T-shaped connects, solve and can increase room usable floor area and aesthetic property.
2), after reinforced H profile steel combination beam is fixing with multi-cavity steel tube concrete coupled column, as the edge constraint component of whole steel core concrete column, its bearing capacity and energy dissipation capacity can be improved.
3) reinforced H profile steel combination beam makes in advance, more overall insertion multi-cavity steel tube concrete coupled column, improves bearing capacity and the ductility of component.Site operation is convenient, does not damage multi-cavity steel tube concrete coupled column, saves material laborsaving.
4) owing to using multi-cavity steel tube concrete coupled column, steel pipe has stronger effect of contraction to concrete, and bearing capacity and ductility that shaft is overall are relatively good, it is achieved that the design requirement of strong column and weak beam.
5) overall structure meets the design principle of " strong column and weak beam; the strong weak component of node ", node possesses multiple tracks and provides fortification against earthquakes line, it is to avoid cause integral system to destroy because partial component destroys, and also possesses necessary intensity, good deformability and energy dissipation capacity simultaneously.
Accompanying drawing explanation
Fig. 1 is tee girder column connected node structural representation of the present invention;
Fig. 2 (a)-(c) is reinforced H profile steel combined beam structure schematic diagram;
Fig. 3 (a)-(h) is reinforced H profile steel combination beam and multi-cavity steel tube concrete coupled column node structure schematic diagram;
Fig. 4 (a)-(c) is tee girder column connected node sectional view of the present invention;
Fig. 5 be (a)-(c) be beam yield failure process schematic;
Fig. 6 is the hysteresis loop schematic diagram of node.
In figure: 1, multi-cavity steel tube concrete coupled column;2, side plate;3, reinforced H profile steel combination beam;3-1, H profile steel;3-2, upper cover plate;3-3, ribbed stiffener;3-4, lower cover;3-5, connector;4, plug-in type combined support;4, plate;5, hot finished steel pipe.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details.
As shown in Figure 1, tee girder column connected node of the present invention, including multi-cavity steel tube concrete coupled column 1, and along the symmetrically arranged side plate in multi-cavity steel tube concrete coupled column 1 two side 2, it is provided with along one of side plate 2 and runs through side plate 2 and be inserted therein the plate 4 of side multi-cavity steel tube concrete coupled column 1, two pieces of side plate 2 extensions and plate 4 are inserted with reinforced H profile steel combination beam 3, constitute tee girder column connected node.
As shown in Fig. 2 (a)-(c), the reinforced H profile steel combination beam 3 of the present invention, including H profile steel 3-1, and between the section steel flange of H profile steel 3-1 end arrange two pieces of ribbed stiffener 3-3, ribbed stiffener 3-3 is welded on the web both sides of H profile steel 3-1, it is welded with a pair the connector 3-5 flushed with H profile steel 3-1 edge along the H profile steel 3-1 web both sides inside ribbed stiffener 3-3, H profile steel 3-1 is respectively welded outside lower flange upper cover plate 3-2 and lower cover 3-4.Wherein, connector 3-5 is steel angle structure, bolt hole is distributed on the outer face of angle steel.Side plate 2 is provided with the through hole corresponding with connector 3-5 bolt hole with plate 4.The width of upper cover plate 3-2 and lower cover 3-4 is more than the width of lower flange in H profile steel 3-1.Ribbed stiffener 3-3 uses three skirt solid weldings to be scheduled on the web both sides of H profile steel.Web between sleeper and sleeper that multi-cavity steel tube concrete coupled column 1 is made up of the hot finished steel pipe at two ends connects and composes with dividing plate, concreting is wherein, two blocks of side plates 2 are fixed along multi-cavity steel tube concrete coupled column 1 both sides level, and two blocks of plates 4 are fitted along sleeper both sides, two ends.
As shown in Fig. 3 (a)-(h), the tee girder column connected node installation process of the present invention is as follows:
(1) first plate 4 is positioned on the multi-cavity steel tube of multi-cavity steel tube concrete coupled column 1;
(2) according to plate 4 in the location dimension of the multi-cavity steel tube of multi-cavity steel tube concrete coupled column 1, the web of multi-cavity steel tube has the vertical slot identical with plate 4 thickness, run through the passage of the side plate 2 of multi-cavity steel tube concrete coupled column 1 as plate 4;Built-in inserted plate is inserted, uses spot welding to fixedly mount temporarily;
(3) on multi-cavity steel tube, position the installation site of side plate, use angle welding to be connected with multi-cavity steel tube along long side direction side plate fixing;
Then plug welding mode is used to be welded together with side plate and multi-cavity steel tube by plate;Outside plate 4 is broken as two sections, and the outer section of outside plate 4 uses twin fillet wolt mode vertically to connect along front side board, and it is fixing that outside plate 4 inner segment uses plug welding to be connected with sleeper and both sides side plate;
(4) good for pre-assembly reinforced H profile steel combination beam 3 is inserted between the side plate of both sides, by tightening installation bolt, reinforced H profile steel combination beam 3 is fixed with both sides side plate temporarily;Then side plate is welded with upper and lower cover plates and connector;
(5) by filling concrete in multi-cavity steel tube, the installation of T-shaped beam-column connection is completed.
As shown in Fig. 4 (a)-(c), for tee girder column connected node sectional view of the present invention.
Tee girder column connected node of the present invention can improve its bearing capacity and energy dissipation capacity.And site operation is convenient, does not damage multi-cavity steel tube concrete coupled column, saves material laborsaving.
The mechanical property of tee girder column connected node of the present invention is described with multi-cavity steel tube concrete coupled column girder steel U-shaped rigid joint for row below.
Utilizing ABAQUS software that node carries out finite element analysis, node post is the multi-cavity steel tube concrete coupled column of 200x600, and beam uses the welding H-bar of H350x150x6x10, and at node, dual-sided board and cover sheet thickness are all same with flange of beam thick.Shown in Finite element analysis results Fig. 5 (a)-(c).
Owing to using multi-cavity steel tube concrete coupled column, steel pipe has stronger effect of contraction to concrete, and bearing capacity and ductility that shaft is overall are relatively good, it is achieved that the design requirement of strong column and weak beam.The destruction order of multi-cavity steel tube concrete coupled column girder steel U-shaped rigid joint is as shown in Fig. 5 (a)-(c) institute.When external force action is bigger, first the beam-ends A away from node bonding pad occurs shown in plastic hinge Fig. 5 (a), Internal Force Redistribution, the bearing power increase of structure;Along with the increase of external force, beam cover plate B occurs shown in plastic hinge Fig. 5 (b) prior to side plate;Finally destroying as shown in Fig. 5 (c) of structure, beam-ends edge of a wing flexing, side plate upper and lower sides C large area is surrendered, but side plate does not forms plastic hinge, and structure still has certain energy dissipation capacity, meets the design requirement of the weak component of strong node.
The present invention is according to conceptual Design of Earthquake Resistance principle, and structure should possess multiple tracks and provide fortification against earthquakes line, it is to avoid cause integral system to destroy because partial component destroys, and also requires that structure should possess necessary intensity, good deformability and energy dissipation capacity simultaneously.Tee girder column connected node of the present invention uses multi-cavity steel tube concrete coupled column girder steel U-shaped rigid joint form, uses the mode of post and beam-ends isolation, and the node connector consisted of full-height side plate and cover plate transmits beam-ends moment of flexure and shearing.When geological process, first beam-ends there is plastic hinge, consumes certain seismic energy and forms first earthquake protection line, back shroud plastic hinge occurs, dissipate seismic energy further, formed second earthquake protection line, side plate ultimately forms plastic hinge, forms the 3rd road earthquake protection line.Overall structure meets the design principle of " strong column and weak beam, the weak component of strong node ", and the energy-dissipating property of structure is relatively good.As shown in Figure 6, the hysteresis loop of node is full, does not has obvious Draw shrinkage, and the energy dissipation capacity of node is good, and deformation is big, when coming earthquake, allows resident family have more escape time.
Above content is to combine concrete preferred implementation further description made for the present invention; it cannot be assumed that the detailed description of the invention of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple reasonings or replacement can also be made, all should be considered as belonging to the present invention and be determined scope of patent protection by the claims submitted to.

Claims (9)

1. a tee girder column connected node, it is characterized in that: include multi-cavity steel tube concrete coupled column, and along the symmetrically arranged side plate in multi-cavity steel tube concrete coupled column two side, it is provided with along one of side plate and runs through side plate and be inserted therein the plate of side multi-cavity steel tube concrete coupled column, two pieces of side plate extensions and plate are inserted with reinforced H profile steel combination beam, constitute tee girder column connected node.
A kind of tee girder column connected node the most according to claim 1, it is characterized in that: described reinforced H profile steel combination beam includes H profile steel, and between the section steel flange of H profile steel end arrange two pieces of ribbed stiffeners, connect along the H profile steel web both sides inside ribbed stiffener and have the connector flushed with H profile steel edge a pair, H profile steel is respectively welded outside lower flange upper cover plate and lower cover.
A kind of tee girder column connected node the most according to claim 2, it is characterised in that: described connector is steel angle structure, bolt hole is distributed on the outer face of angle steel.
4. according to a kind of tee girder column connected node described in claim 1 or 3, it is characterised in that: described side plate is provided with the through hole corresponding with connector bolt hole with plate.
A kind of tee girder column connected node the most according to claim 2, it is characterised in that: the width of described upper cover plate and lower cover is more than the width of lower flange in H profile steel.
A kind of tee girder column connected node the most according to claim 2, it is characterised in that: described ribbed stiffener uses three skirt solid weldings to be scheduled on the web both sides of H profile steel.
A kind of tee girder column connected node the most according to claim 1, it is characterised in that: described multi-cavity steel tube concrete coupled column is connected and composed with dividing plate by the web between sleeper and the sleeper at two ends, and concreting is wherein.
A kind of tee girder column connected node the most according to claim 7, it is characterised in that: described sleeper is hot finished steel pipe.
9. according to a kind of tee girder column connected node described in any one of claim 7 or 8, it is characterised in that: described two blocks of side plates are fixed along multi-cavity steel tube concrete coupled column both sides level, and two blocks of plates are fitted along sleeper both sides, two ends.
CN201610344129.3A 2016-05-20 2016-05-20 A kind of tee girder column connected node Expired - Fee Related CN105821961B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106264007A (en) * 2016-10-31 2017-01-04 桂林航天工业学院 A kind of cantilevered bed clothes hanger and use the bed of this clothes hanger
CN106320607A (en) * 2016-08-10 2017-01-11 天津大学建筑设计研究院 Manufacturing method of assembly type prefabricated superposed beam with steel structure connection joints
CN106836470A (en) * 2016-11-23 2017-06-13 同济大学建筑设计研究院(集团)有限公司 A kind of girder steel without diaphragm plate and steel pipe column rigid joint
CN106968337A (en) * 2017-04-24 2017-07-21 西安建筑科技大学 A kind of exterior formula connecting node of multi-cavity steel tube concrete pole steel beam plane used to wearing rod iron
CN106968339A (en) * 2017-04-24 2017-07-21 西安建筑科技大学 With plug welding assembled connecting node outside the Multicarity concrete filled steel tube pole steel beam face to wearing rod iron
CN107989186A (en) * 2017-11-29 2018-05-04 厦门合立道工程设计集团股份有限公司 A kind of prefabricated concrete structure primary steel feather joint node and its construction method
CN110117988A (en) * 2019-06-10 2019-08-13 西安建筑科技大学 A kind of antitorque node of beam-ends of two-way beam column isolation
CN110130494A (en) * 2019-06-10 2019-08-16 西安建筑科技大学 The board-like unilateral bolted antitorque node of beam-ends of bilateral
CN110295670A (en) * 2019-07-24 2019-10-01 青岛理工大学 Square FRP steel-wood combined node and installation method thereof
CN110359561A (en) * 2019-07-31 2019-10-22 西安建筑科技大学 A kind of side plate connection beam-column node structure and connection method
CN113152660A (en) * 2021-01-08 2021-07-23 凉山州现代房屋建筑集成制造有限公司 Combination enhancement mode node that girder steel and wide steel core concrete column are connected

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CN204919805U (en) * 2015-07-27 2015-12-30 云南建工钢结构有限公司 A bundled tube steel framework composition structure that is used for industrialization assembled steel construction house
CN105569191A (en) * 2016-01-23 2016-05-11 安徽鸿路钢结构(集团)股份有限公司 Steel-encased concrete composite beam-steel pipe column connection joint
CN205637122U (en) * 2016-05-20 2016-10-12 西安建筑科技大学 T beam -column connecting joint that appears

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CN202139692U (en) * 2010-09-29 2012-02-08 中冶建筑研究总院有限公司 Vertical external connection and rigid connection node for rectangular tubular column and H-shaped steel beam
CN102995758A (en) * 2012-12-14 2013-03-27 金天德 Rigid-connection node of combined steel-pipe concrete column and steel beam
US20150033661A1 (en) * 2013-07-31 2015-02-05 Staging Concepts Acquisitions, Llc Staging system and method
CN204919805U (en) * 2015-07-27 2015-12-30 云南建工钢结构有限公司 A bundled tube steel framework composition structure that is used for industrialization assembled steel construction house
CN105569191A (en) * 2016-01-23 2016-05-11 安徽鸿路钢结构(集团)股份有限公司 Steel-encased concrete composite beam-steel pipe column connection joint
CN205637122U (en) * 2016-05-20 2016-10-12 西安建筑科技大学 T beam -column connecting joint that appears

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106320607A (en) * 2016-08-10 2017-01-11 天津大学建筑设计研究院 Manufacturing method of assembly type prefabricated superposed beam with steel structure connection joints
CN106264007B (en) * 2016-10-31 2018-03-02 桂林航天工业学院 A kind of cantilevered bed clothes hanger and the bed using this clothes hanger
CN106264007A (en) * 2016-10-31 2017-01-04 桂林航天工业学院 A kind of cantilevered bed clothes hanger and use the bed of this clothes hanger
CN106836470A (en) * 2016-11-23 2017-06-13 同济大学建筑设计研究院(集团)有限公司 A kind of girder steel without diaphragm plate and steel pipe column rigid joint
CN106968337A (en) * 2017-04-24 2017-07-21 西安建筑科技大学 A kind of exterior formula connecting node of multi-cavity steel tube concrete pole steel beam plane used to wearing rod iron
CN106968339A (en) * 2017-04-24 2017-07-21 西安建筑科技大学 With plug welding assembled connecting node outside the Multicarity concrete filled steel tube pole steel beam face to wearing rod iron
CN106968339B (en) * 2017-04-24 2024-03-29 西安建筑科技大学 Multi-cavity concrete filled steel tube column-steel beam out-of-plane plug welding assembly type connecting node with opposite penetrating steel bars
CN106968337B (en) * 2017-04-24 2024-02-09 西安建筑科技大学 Multi-cavity concrete filled steel tube column-steel beam out-of-plane assembly type connecting node adopting opposite penetrating steel bars
CN107989186B (en) * 2017-11-29 2019-10-25 厦门合立道工程设计集团股份有限公司 A kind of prefabricated concrete structure primary steel feather joint node and its construction method
CN107989186A (en) * 2017-11-29 2018-05-04 厦门合立道工程设计集团股份有限公司 A kind of prefabricated concrete structure primary steel feather joint node and its construction method
CN110130494A (en) * 2019-06-10 2019-08-16 西安建筑科技大学 The board-like unilateral bolted antitorque node of beam-ends of bilateral
CN110117988A (en) * 2019-06-10 2019-08-13 西安建筑科技大学 A kind of antitorque node of beam-ends of two-way beam column isolation
CN110295670A (en) * 2019-07-24 2019-10-01 青岛理工大学 Square FRP steel-wood combined node and installation method thereof
CN110359561A (en) * 2019-07-31 2019-10-22 西安建筑科技大学 A kind of side plate connection beam-column node structure and connection method
CN113152660A (en) * 2021-01-08 2021-07-23 凉山州现代房屋建筑集成制造有限公司 Combination enhancement mode node that girder steel and wide steel core concrete column are connected
CN113152660B (en) * 2021-01-08 2022-11-25 凉山州现代房屋建筑集成制造有限公司 Combination enhancement mode node that girder steel and wide steel core concrete column are connected

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