CN113513086B - Assembled RC post connected node based on steel hoop board-steel tooth groove connecting piece - Google Patents
Assembled RC post connected node based on steel hoop board-steel tooth groove connecting piece Download PDFInfo
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- CN113513086B CN113513086B CN202110475253.4A CN202110475253A CN113513086B CN 113513086 B CN113513086 B CN 113513086B CN 202110475253 A CN202110475253 A CN 202110475253A CN 113513086 B CN113513086 B CN 113513086B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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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
- E04H9/025—Structures with concrete columns
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
An assembly type RC column connection node based on a steel hoop plate-steel tooth groove connecting piece comprises an upper concrete column and a lower concrete column, wherein the upper concrete column and the lower concrete column are connected with a steel plate connection hoop in a matched mode through a cross connection steel plate; during assembly, the cross-shaped connecting steel plate is inserted into the connecting lug plate of the steel plate connecting hoop and the second cross-shaped groove of the lower concrete column and is fixedly connected through bolts, the lower part of the cross-shaped connecting steel plate is matched with the steel plate connecting hoop and the second cross-shaped groove, a vertical gap of 1-3mm is reserved at the joint, and the vertical compression bearing capacity of the concrete column is transmitted through the column ends of the upper concrete column and the lower concrete column; the force transmission section of the invention has the same effective section area as the column, and the column end replaces a stirrup through a cross connecting steel plate and a steel plate connecting hoop, so that the restraint effect is enhanced, and the bearing capacity is basically equivalent to that of pouring the column; the cross connecting steel plate is inserted into the cross-shaped groove, so that out-of-plane yielding is avoided, the shearing force bearing capacity of the joint is guaranteed, and the effective transmission of axial force is guaranteed through welding of the joint connecting piece and longitudinal ribs in the upper concrete column and the lower concrete column.
Description
Technical Field
The invention belongs to the technical field of assembly type frame structure members, and particularly relates to an assembly type RC column connecting node based on a steel hoop plate-steel tooth groove connecting piece.
Background
The focus and difficulty of the research in the field of fabricated buildings has been focused on fabricated structure nodes, including strength, rigidity, etc., which are difficult to be completely equivalent to cast-in-place structures. The vertical connected node of current assembled mainly is post-post node, and the nodal connection mode of adoption mainly includes: grouting sleeve connection, bolt connection, welded connection, other connections.
The grouting sleeve connection needs on-site wet operation, the assembly rate is reduced, the operation is inconvenient, and the assembly connection efficiency is low because the wet operation needs a certain hardening time, so that the connection effectiveness cannot be accurately checked by the conventional method; the welding connection construction is convenient, the quality inspection has a mature standard, but the construction quality is greatly related to the quality of constructors, and the standard construction is not facilitated.
Bolted connection efficiency is high, and construction quality control easily guarantees, and current bolted connection mainly includes two kinds of types: one is vertical bolt connection, and the other is horizontal bolt connection. The vertical bolt connection is pulled through the bolt to bear the tensile force of the column, the connecting groove needs to be arranged on the column in the method, stress concentration is easy to generate to weaken the bearing capacity, the construction space is small, construction is not facilitated, and in the existing standard, the common bolt connection can generate additional moment in a pulled state, so that inconvenience is caused to the connection design. The current level is mainly for sleeving the steel hoop board in the outer layer of node to bolted connection mode, and the stay bolt is connected with the post steel hoop board, and this type of mode cost is high, and the construction is inconvenient, temporarily does not form ripe standard, still is exploring.
How to improve the shearing bearing capacity of the bolt connection construction under the condition of keeping the simple standard of the bolt connection construction needs to be solved at present.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an assembly type RC column connecting node based on a steel hoop plate-steel tooth groove connecting piece, which can solve the problem of low assembly rate of the existing assembly type column connection, improve the standardized construction degree, clarify the stress path and improve the shear bearing capacity of the assembly type column connection; the steel wire reinforced concrete composite slab has the advantages of high node rigidity, good force transmission effect, no weakening of vertical compression bearing capacity, strong shearing resistance bearing capacity, convenience in construction and high assembly efficiency.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an assembly type RC column connection node based on a steel hoop plate-steel tooth groove connection piece comprises an upper concrete column 1 and a lower concrete column 4, wherein a first boss 1-1 is arranged at the bottom end of the upper concrete column 1, a first cross-shaped groove 1-2 is formed in the middle of the first boss 1-1, a steel plate embedded groove 1-3 is formed in the periphery of the first boss 1-1, and the first boss 1-1 is inserted into the upper portion of a cross-shaped connection steel plate 2 through the first cross-shaped groove 1-2 and the steel plate embedded groove 1-3; the top end of the lower concrete column 4 is provided with a second boss 4-1, a second cross-shaped groove 4-2 is formed in the middle of the second boss 4-1, a steel hoop embedded groove 4-3 is formed in the periphery of the second boss 4-1, the second boss 4-1 is embedded with the lower portion of a steel plate connecting hoop 3 through the steel hoop embedded groove 4-3, and the steel plate connecting hoop 3 is connected with the lower portion of a cross-shaped stress steel plate 2-2 of the inner bottom wall of the cross-shaped connecting steel plate 2 in an inserted mode through connecting lug plates 3-2 formed in the periphery of the upper portion of the steel plate connecting hoop 3.
The periphery of the cross-shaped connecting steel plate 2 is provided with a steel frame connecting plate 2-1, the inner bottom wall of the steel frame connecting plate 2-1 is connected with a cross-shaped stress steel plate 2-2, the lower part of the cross-shaped stress steel plate 2-2 extends out of the steel frame connecting plate 2-1, and the tail end of a lower limb of the cross-shaped stress steel plate 2-2 is provided with a first screw hole 2-3.
The steel hoop plate 3-1 is arranged on the periphery of the steel plate connecting hoop 3, and the second screw holes 3-3 are formed in the connecting ear plate 3-2 arranged on the periphery of the upper portion of the steel hoop plate 3-1.
The first screw hole 2-3 at the tail end of the lower limb of the cross stress steel plate 2-2 is in adaptive connection with the second screw hole 3-3 on the connecting lug plate 3-2 through a bolt 2-4.
The upper concrete column 1 is provided with a through-length longitudinal rib and is welded and fixed with the top of a steel frame connecting plate 2-1 of the cross-shaped connecting steel plate 2.
And the lower concrete column 4 is provided with a through-length steel bar and is welded and fixed with the bottom of a steel hoop plate 3-1 of the steel plate connecting hoop 3.
The depth of the steel plate embedded groove 1-3 and the depth of the steel hoop embedded groove 4-3 are both 50-100 mm.
The depth of the second cross-shaped groove 4-2 is 1-3mm deeper than the depth of the cross-shaped connecting steel plate 2.
The invention has the beneficial effects that:
1. through cross connecting steel plate 2 and 3 transmission shear forces of steel sheet connector hoop, go up concrete column 1 and 4 insides of lower concrete column and consolidate through indulging the muscle to guarantee the transmission of shear force, the dry-type connection assembly efficiency is high simultaneously, effectively improves standardized construction degree.
2. The lower part of the cross stressed steel plate 2-2 is connected with the connecting ear plate 3-2 of the steel hoop plate 3-1 through a bolt hole and a bolt 2-4, and meanwhile, the lower part of the cross stressed steel plate 2-2 is inserted into the second cross-shaped groove 4-2, so that the out-of-plane yield is effectively avoided, and the bearing capacity is improved; effectively improves the rigidity of the column joints and meets the seismic design requirements of the strong column and the weak beam.
3. Because the depth of the second cross-shaped groove 4-2 is 1-3mm deeper than the lower part of the cross-shaped stressed steel plate 2-2, vertical force is directly transferred through the upper concrete column 1 and the lower concrete column 4 by vertical pressure, and the cross section is not weakened; and the peripheries of a first boss 1-1 at the bottom end of the upper concrete column 1 and a second boss 4-1 at the top end of the lower concrete column 4 respectively replace stirrups to reinforce the column ends through a steel frame connecting plate 2-1 and a steel hoop plate 3-1, so that the local vertical pressure bearing capacity is improved.
4. The depth of the steel frame connecting plate 2-1 inserted into the upper concrete column 1 and the depth of the steel hoop plate 3-1 inserted into the lower concrete column 4 are both 50-100 mm and are welded with longitudinal steel bars, and the steel frame connecting plate and the longitudinal steel bars effectively guarantee the uniform transmission of shearing force and axial force.
In conclusion, the invention has the advantages of high node rigidity, good force transmission effect, no weakening of vertical compression bearing capacity, strong shearing bearing capacity, convenient construction and high assembly efficiency.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is a schematic diagram of the upper node structure of the present invention.
Fig. 4 is a schematic diagram of the lower node structure of the present invention.
Fig. 5 is a schematic structural view of the cruciform attachment steel plate of the present invention.
Figure 6 is a schematic diagram of the construction of the steel plate connector of the present invention.
Fig. 7 is a schematic view of the upper concrete column structure of the present invention.
Fig. 8 is a schematic view of the lower concrete column structure of the present invention.
In the figure: 1. putting a concrete column; 1-1, a first boss; 1-2, a first cross-shaped groove; 1-3, pre-burying a groove with a steel plate; 2. a cross-shaped connecting steel plate; 2-1, connecting a steel frame plate; 2-2, cross stressed steel plates; 2-3, a first screw hole; 2-4, bolts; 3. a steel plate connecting hoop; 3-1, steel hoop plate; 3-2, connecting an ear plate; 3-3, a second screw hole; 4. a lower concrete column; 4-1, a second boss; 4-2, a second cross-shaped groove; 4-3, pre-embedding grooves for steel hoops.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, 2, 7 and 8, the assembly type RC column connection node based on the steel hoop plate-steel tooth groove connection piece comprises an upper concrete column 1 and a lower concrete column 4, wherein a first boss 1-1 is arranged at the bottom end of the upper concrete column 1, a first cross-shaped groove 1-2 is formed in the middle of the first boss 1-1, a steel plate embedded groove 1-3 is formed in the periphery of the first boss 1-1, and the first boss 1-1 is connected with the upper portion of a cross-shaped connection steel plate 2 in an inserted mode through the first cross-shaped groove 1-2 and the steel plate embedded groove 1-3; the top end of the lower concrete column 4 is provided with a second boss 4-1, a second cross-shaped groove 4-2 is formed in the middle of the second boss 4-1, a steel hoop embedded groove 4-3 is formed in the periphery of the second boss 4-1, the second boss 4-1 is embedded with the lower portion of the steel plate connecting hoop 3 through the steel hoop embedded groove 4-3, and the steel plate connecting hoop 3 is connected with the lower portion of the cross-shaped stress steel plate 2-2 of the inner bottom wall of the cross-shaped connecting steel plate 2 in an inserting mode through connecting lug plates 3-2 formed in the periphery of the upper portion of the steel plate connecting hoop 3.
Referring to fig. 3 and 5, a steel frame connecting plate 2-1 is arranged on the periphery of the cross connecting steel plate 2, the inner bottom wall of the steel frame connecting plate 2-1 is connected with a cross stress steel plate 2-2, the lower part of the cross stress steel plate 2-2 extends out of the steel frame connecting plate 2-1, and the tail end of a lower limb of the cross stress steel plate 2-2 is provided with a first screw hole 2-3.
Referring to fig. 6, a steel hoop plate 3-1 is arranged on the periphery of the steel plate connecting hoop 3, and a second screw hole 3-3 is arranged on a connecting ear plate 3-2 arranged on the periphery of the upper part of the steel hoop plate 3-1.
Referring to fig. 4 and 5, a first screw hole 2-3 at the end of the lower limb of the cross force-bearing steel plate 2-2 is fittingly connected with a second screw hole 3-3 on the connecting lug plate 3-2 through a bolt 2-4.
The upper concrete column 1 is provided with a through-length longitudinal rib and is welded and fixed with the top of the steel frame connecting plate 2-1 of the cross connecting steel plate 2.
And the lower concrete column 4 is provided with a through-length steel bar and is welded and fixed with the bottom of a steel hoop plate 3-1 of the steel plate connecting hoop 3.
The depth of the steel plate embedded groove 1-3 and the depth of the steel hoop embedded groove 4-3 are both 50-100 mm, and the steel plate embedded groove and the steel hoop embedded groove can be respectively embedded with the steel frame connecting plate 2-1 and the steel hoop plate 3-1.
The depth of the second cross-shaped groove 4-2 is 1-3mm deeper than the depth of the cross-shaped connecting steel plate 2, so that the axial pressure of the node is transmitted through the column end, and no special design is needed under the condition that the section is not weakened.
The working principle of the invention is as follows:
firstly, a cross-shaped connecting steel plate 2 is inserted into a first cross-shaped groove 1-2 and a steel plate pre-embedding groove 1-3 of an upper concrete column 1, a through-length steel bar in the upper concrete column 1 is welded with a contact surface of a steel frame connecting plate 2-1, then a steel plate connecting hoop 3 is inserted into a steel hoop pre-embedding groove 4-3, and the through-length steel bar in a lower concrete column 4 is welded with the contact surface of the steel plate hoop 3-1; then, the cross-shaped stress steel plate 2-2 and a connecting ear plate 3-2 of a steel plate connecting hoop 3 are inserted oppositely, and the cross-shaped stress steel plate 2-2 and the connecting ear plate 3-2 are fastened through a bolt 2-4, a first screw hole 2-3 and a second screw hole 3-3; the depth of the second cross-shaped groove 4-2 is 1-3mm deeper than the depth of the cross-shaped connecting steel plate 2, so that the axial pressure of the node is transmitted through the column end.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (5)
1. The utility model provides an assembled RC post connected node based on steel hoop board-steel tooth groove connecting piece, includes concrete column (1) and lower concrete column (4), its characterized in that: the bottom end of the upper concrete column (1) is provided with a first boss (1-1), a first cross-shaped groove (1-2) is formed in the middle of the first boss (1-1), a steel plate embedded groove (1-3) is formed in the periphery of the first boss (1-1), and the first boss (1-1) is spliced with the upper part of the cross-shaped connecting steel plate (2) through the first cross-shaped groove (1-2) and the steel plate embedded groove (1-3); the top end of the lower concrete column (4) is provided with a second boss (4-1), a second cross-shaped groove (4-2) is formed in the middle of the second boss (4-1), a steel hoop pre-embedding groove (4-3) is formed in the periphery of the second boss (4-1), the second boss (4-1) is embedded with the lower portion of the steel plate connecting hoop (3) through the steel hoop pre-embedding groove (4-3), and the steel plate connecting hoop (3) is connected with the lower portion of a cross-shaped stress steel plate (2-2) of the inner bottom wall of the cross-shaped connecting steel plate (2) in an inserting mode through connecting lug plates (3-2) formed on the periphery of the upper portion of the steel plate connecting hoop (3);
the periphery of the cross-shaped connecting steel plate (2) is provided with a steel frame connecting plate (2-1), the inner bottom wall of the steel frame connecting plate (2-1) is connected with a cross-shaped stress steel plate (2-2), the lower part of the cross-shaped stress steel plate (2-2) extends out of the steel frame connecting plate (2-1), and the tail end of a lower limb of the cross-shaped stress steel plate (2-2) is provided with a first screw hole (2-3);
a steel hoop plate (3-1) is arranged on the periphery of the steel plate connecting hoop (3), and a second screw hole (3-3) is formed in a connecting lug plate (3-2) arranged on the periphery of the upper part of the steel hoop plate (3-1);
the first screw hole (2-3) at the tail end of the lower limb of the cross stress steel plate (2-2) is in adaptive connection with the second screw hole (3-3) on the connecting lug plate (3-2) through a bolt (2-4).
2. The fabricated RC column connection node based on steel hoop plate-steel tooth groove connection piece of claim 1, wherein: the upper concrete column (1) is provided with a through-length longitudinal rib and is welded and fixed with the top of a steel frame connecting plate (2-1) of the cross connecting steel plate (2).
3. The assembled RC column connection node based on steel hoop plate-steel tooth slot connecting pieces of claim 1, wherein: the lower concrete column (4) is provided with a through-length steel bar and is fixedly welded with the bottom of a steel hoop plate (3-1) of the steel plate connecting hoop (3).
4. The fabricated RC column connection node based on steel hoop plate-steel tooth groove connection piece of claim 1, wherein: the depth of the steel plate embedded groove (1-3) and the depth of the steel hoop embedded groove (4-3) are both 50-100 mm.
5. The assembled RC column connection node based on steel hoop plate-steel tooth slot connecting pieces of claim 1, wherein: the depth of the second cross-shaped groove (4-2) is 1-3mm deeper than the inserting depth of the cross-shaped connecting steel plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475253.4A CN113513086B (en) | 2021-04-29 | 2021-04-29 | Assembled RC post connected node based on steel hoop board-steel tooth groove connecting piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475253.4A CN113513086B (en) | 2021-04-29 | 2021-04-29 | Assembled RC post connected node based on steel hoop board-steel tooth groove connecting piece |
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| CN113513086A CN113513086A (en) | 2021-10-19 |
| CN113513086B true CN113513086B (en) | 2022-07-15 |
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Families Citing this family (1)
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| CN115142546A (en) * | 2022-05-10 | 2022-10-04 | 中铁第一勘察设计院集团有限公司 | Novel dry-type connection assembly type RC frame column node structure |
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| JPH0396542A (en) * | 1989-09-11 | 1991-04-22 | Fujita Corp | Tenacity reinforcing mechanism for column/beam jointing section in combined structure consisting of rc column and steel frame beam |
| JPH06212700A (en) * | 1993-01-13 | 1994-08-02 | Sato Kogyo Co Ltd | Jointing of different structural members |
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| CN112144668A (en) * | 2020-09-29 | 2020-12-29 | 青岛理工大学 | Tenon-type inserted novel assembled steel-concrete combined node |
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2021
- 2021-04-29 CN CN202110475253.4A patent/CN113513086B/en active Active
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| JPH0396542A (en) * | 1989-09-11 | 1991-04-22 | Fujita Corp | Tenacity reinforcing mechanism for column/beam jointing section in combined structure consisting of rc column and steel frame beam |
| JPH06212700A (en) * | 1993-01-13 | 1994-08-02 | Sato Kogyo Co Ltd | Jointing of different structural members |
| JP2019203359A (en) * | 2018-05-25 | 2019-11-28 | 清水建設株式会社 | Joint structure of columns |
| CN108755950A (en) * | 2018-07-11 | 2018-11-06 | 上海应用技术大学 | Prefabricated concrete structure column and column rigid connection node and construction method |
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| CN111364679A (en) * | 2020-04-16 | 2020-07-03 | 浙江大学建筑设计研究院有限公司 | Assembled reinforced concrete structure post and connected node |
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