CN108468378B - Prefabricated node of concrete structure - Google Patents

Prefabricated node of concrete structure Download PDF

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Publication number
CN108468378B
CN108468378B CN201810328982.5A CN201810328982A CN108468378B CN 108468378 B CN108468378 B CN 108468378B CN 201810328982 A CN201810328982 A CN 201810328982A CN 108468378 B CN108468378 B CN 108468378B
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CN
China
Prior art keywords
reinforced concrete
steel plate
anchoring
steel
prefabricated
Prior art date
Application number
CN201810328982.5A
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Chinese (zh)
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CN108468378A (en
Inventor
吕伟
杨曌
杨泉
Original Assignee
武汉科技大学
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Priority to CN201810328982.5A priority Critical patent/CN108468378B/en
Publication of CN108468378A publication Critical patent/CN108468378A/en
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Publication of CN108468378B publication Critical patent/CN108468378B/en

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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
    • E04B1/20Structures 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
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

Abstract

The invention discloses a prefabricated node of a concrete structure, which comprises a prefabricated reinforced concrete beam and a prefabricated reinforced concrete column, wherein the reinforced concrete beam and the prefabricated reinforced concrete column are connected through an anchoring steel plate and an anchoring bolt, the end of the prefabricated reinforced concrete beam is welded with the anchoring steel plate through a longitudinal rib in the beam, a short anchoring steel bar is additionally arranged at the beam end and is welded on the anchoring steel plate, the anchoring bolt is embedded at a preset position in the reinforced concrete column, the prefabricated column is connected with the prefabricated beam through a reserved hole in the anchoring steel plate, a rubber cushion damping device is arranged between the anchoring steel plate and the prefabricated reinforced concrete column, the prefabricated node specifically comprises two large steel plates and a small steel plate clamped between the two large steel plates, the small steel plates are distributed at the upper end and the lower end of each large steel plate, and rubber sheets for damping are arranged between each small steel plate and the large steel plates at the two sides of the small. All components of the invention can be produced in factories, the field wet operation is reduced, the steel consumption is saved, the node ductility is high, and the earthquake resistance is good.

Description

Prefabricated node of concrete structure

Technical Field

The invention belongs to the field of reinforced concrete buildings, relates to a concrete structure installation node, and particularly relates to a novel prefabricated node.

Background

After a period of low tide, the assembled structure in China has gained high attention of governments and broad scholars under the influence of factors such as green energy conservation, labor price rising and the like in recent years, and a large amount of research work of novel assembled components, connection forms and structural systems is developed, so that a large number of exemplary engineering projects are built, and a large number of research results are obtained.

The nodes of the fabricated concrete frame structure may be divided into equivalent cast-in-place (wet) nodes and fabricated (dry) nodes according to the field construction method. The equivalent cast-in-place node comprises a prestress splicing node and a post-cast integral connecting node, and the assembly type node comprises a bolt connecting node and a welding connecting node. The main problem with fabricated concrete frame joints is their insufficient stiffness and ductility. The most widely used at present is the post-cast integral connecting joint. However, the design theory and the calculation method of the node are based on the principle of equivalent cast-in-place, and the mechanical characteristics and the construction characteristics of the fabricated structure are not fully considered, so that the node has the problems of large wet workload, complex connection, difficult construction and the like, and the popularization and the application of the fabricated frame structure are seriously influenced. The strength and the rigidity of the prestress splicing assembly type node can be close to or reach the level of an equivalent cast-in-place node, but the energy consumption capability of the prestress splicing assembly type node is lower than that of the cast-in-place node, and the prestress splicing assembly type node is complex in construction process and not beneficial to popularization and application. The performance of the welding connection node is influenced by the welding quality, and the welding quality cannot be ensured due to uneven quality of field welding workers, and the popularization and the use are not facilitated.

Disclosure of Invention

The invention aims to provide a novel prefabricated node to overcome the defects in the prior art, and the node is connected by bolts and has the characteristics of steel consumption saving, simplicity and convenience in construction and high node ductility.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a prefabricated assembled node of concrete structure, includes prefabricated reinforced concrete roof beam and reinforced concrete column, reinforced concrete roof beam and reinforced concrete column pass through anchor steel sheet and anchor bolt and link to each other its characterized in that: the anchor steel plate is fixed on the reinforced concrete beam in advance, and a damping device is arranged between the anchor steel plate and the reinforced concrete column.

As an improvement, damping device is cushion damping device, and it specifically includes two big steel sheets and presss from both sides the little steel sheet constitution between two big steel sheets, little steel sheet has two and distributes in both ends about the big steel sheet, all is equipped with between the big steel sheet of every little steel sheet and its both sides and is used for the absorbing sheet rubber.

As an improvement, the anchoring steel plate is fixed at the end part of the reinforced concrete beam and is connected with the beam inner longitudinal bar of the reinforced concrete beam in a welding way.

As an improvement, short reinforcing steel bars connected with the anchoring steel plates in a welding mode are further arranged in the reinforced concrete beam.

As an improvement, the anchoring bolts are embedded in the reinforced concrete columns, penetrate through the small steel plates at the upper ends and the lower ends of the large steel plates and are fixed on the anchoring steel plates through nuts.

As an improvement, the rubber sheets between the small steel plates and the large steel plates on the two sides of the small steel plates are replaced by plastic gaskets.

After the scheme of the invention is adopted, the invention has the following advantages:

(1) the invention discloses a novel beam end connecting joint which is used for connecting a prefabricated reinforced concrete beam and a prefabricated reinforced concrete column by adopting a reinforced concrete frame assembly type node. All components are processed in a factory and are directly assembled and connected after being transported to a construction site, so that the field wet operation is reduced, and the construction efficiency is improved.

(2) The invention adopts the design principle that the end of a precast concrete beam is anchored with an overhanging anchoring steel plate through a beam longitudinal bar, and short anchoring steel bars are arranged to realize strong anchoring.

(3) The invention adopts the anchoring steel plate which is anchored and extends outwards at the beam end, replaces the common connection of the section steel joints and saves the steel consumption.

(4) According to the invention, the anchor bolts embedded in the precast concrete column are connected with the preset anchor steel plate bolts, so that the field wet operation is reduced, and the construction is convenient.

(5) According to the invention, the rubber pad damping device is additionally arranged between the precast reinforced concrete beam and the column, so that the node ductility is increased, and the node anti-seismic performance is improved.

Drawings

FIG. 1 is an elevational view of an assembled node of the present invention;

FIG. 2 is a cross-sectional view of the fabricated node A-A of FIG. 1;

FIG. 3 is a perspective view of the fabricated node of the present invention;

FIG. 4 is a perspective view of an anchoring steel plate according to the present invention;

FIG. 5 is a schematic view of the cushion shock absorber of the present invention.

In the figure: the concrete-reinforced beam-type damping device comprises 1-a reinforced concrete beam, 2-a reinforced concrete column, 3-an anchoring bolt, 4-a rubber cushion damping device, 5-an anchoring steel plate, 6-a nut, 7-a beam inner longitudinal rib, 8-a short anchoring steel bar, 9-a large steel plate, 10-a rubber sheet and 11-a small steel plate.

Detailed Description

As shown in fig. 1 to 5, a prefabricated assembled node of concrete structure, including prefabricated reinforced concrete roof beam 1 and reinforced concrete column 2, the roof beam end of reinforced concrete roof beam 1 is through indulging muscle 7 and short solid steel bar welding anchor steel sheet 5 in the roof beam, reinforced concrete column 2 is at preset position pre-buried anchor bolt 3, anchor bolt 3 is used for connecting cushion damping device 4 and anchor steel sheet 5, reserve the hole in cushion damping device 4 and anchor steel sheet 5 corresponding position, anchor bolt 3 passes in proper order and reserves the hole on cushion damping device 4 and the anchor steel sheet 5, it is fixed through nut 6 at 5 opposite sides of anchor steel sheet.

In this embodiment, the area of the anchor steel plate 5 is larger than the cross section of the reinforced concrete beam 1, the upper end and the lower end of the reinforced concrete beam 1 extend outwards, and the anchor bolt 3 is connected to the part, extending outwards, of the anchor steel plate 5.

One end of the short anchoring steel bar 8 is welded with the anchoring steel plate 5, one end of the short anchoring steel bar is anchored in the prefabricated reinforced concrete beam 1 in a hook shape, and the length of the short anchoring steel bar 8 is determined according to actual conditions and is not too long.

As shown in fig. 5, the cushion damping device 4 is composed of a large steel plate 9, rubber sheets 10 and small steel plates 11, two small steel plates 11 are distributed at the upper end and the lower end of the large steel plate 9, and the rubber sheets 10 for damping are arranged between each small steel plate 11 and the large steel plates 9 at the two sides of the small steel plate 11. Holes are reserved at the positions corresponding to the anchoring bolts 3 pre-embedded in the reinforced concrete columns 2.

During construction on site, firstly, the prefabricated reinforced concrete column 2 is hoisted to a fixed position, then the rubber cushion damping device 4 is assembled according to the figure 5, and then the rubber cushion damping device 4 is connected with the anchor bolt 3 through the reserved hole on the rubber cushion damping device 4 and is tightly attached to the prefabricated reinforced concrete column 2. And then hoisting the prefabricated reinforced concrete beam 1, connecting the beam with the anchor bolt 3 through a reserved hole on the beam end anchor steel plate 5, and fixing the beam by using a nut 6.

Claims (2)

1. The utility model provides a prefabricated assembled node of concrete structure, includes prefabricated reinforced concrete roof beam and reinforced concrete column, reinforced concrete roof beam and reinforced concrete column pass through anchor steel sheet and anchor bolt and link to each other its characterized in that: the anchoring steel plate is fixed on the reinforced concrete beam in advance, and a damping device is arranged between the anchoring steel plate and the reinforced concrete column;
the damping device is a rubber cushion damping device and specifically comprises two large steel plates and small steel plates clamped between the two large steel plates, the two small steel plates are distributed at the upper end and the lower end of the large steel plates, and rubber sheets for damping are arranged between each small steel plate and the large steel plates at the two sides of the small steel plate;
the anchoring steel plate is fixed at the end part of the reinforced concrete beam and is connected with the longitudinal bar in the reinforced concrete beam and the short anchoring steel bar in a welding way, one end of the short anchoring steel bar is welded with the anchoring steel plate, and the other end of the short anchoring steel bar is anchored in the prefabricated reinforced concrete beam in a bent hook shape; the area of the anchoring steel plate is larger than the section of the reinforced concrete beam, the anchoring steel plate extends outwards from the upper end and the lower end of the reinforced concrete beam, and the anchoring bolt is connected to the part, extending outwards, of the anchoring steel plate;
the anchor bolts are embedded in the reinforced concrete columns and penetrate through the small steel plates at the upper ends and the lower ends of the large steel plates and are fixed on the anchor steel plates through nuts.
2. A prefabricated node of a concrete structure according to claim 1, characterized in that: and rubber sheets between the small steel plate and the large steel plates on the two sides of the small steel plate are replaced by plastic gaskets.
CN201810328982.5A 2018-04-13 2018-04-13 Prefabricated node of concrete structure CN108468378B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810328982.5A CN108468378B (en) 2018-04-13 2018-04-13 Prefabricated node of concrete structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810328982.5A CN108468378B (en) 2018-04-13 2018-04-13 Prefabricated node of concrete structure

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CN108468378A CN108468378A (en) 2018-08-31
CN108468378B true CN108468378B (en) 2020-05-08

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110145021B (en) * 2019-05-06 2020-11-20 东南大学 Assembled self-resetting beam-column connecting node with built-in extrusion energy dissipation device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2973812B2 (en) * 1994-03-10 1999-11-08 鹿島建設株式会社 Joint structure between steel members and concrete members
JPH08218498A (en) * 1995-02-15 1996-08-27 Kanegafuchi Chem Ind Co Ltd Connecting metal of column and horizontal member
JPH10205006A (en) * 1997-01-28 1998-08-04 Tadao Fukuda Column-beam joint structure, and wooden structure
JPH11190068A (en) * 1997-12-26 1999-07-13 Taisei Corp Building structure
CN101451379A (en) * 2007-12-07 2009-06-10 同济大学 Flush end-plate connecting beam column node structure with backing plate and manufacturing method thereof
CN102444211B (en) * 2011-11-15 2014-04-30 福州大学 Reamed steel structure beam-column joint connected via end plate and construction method for same
JP6067403B2 (en) * 2013-02-14 2017-01-25 株式会社フジタ Beam-to-column connection and steel beam connection at beam-to-column connection
CN104032840B (en) * 2014-07-03 2016-03-23 华北理工大学 The prestressing force assembling frame node connecting structure of additional angle steel
CN105714933B (en) * 2016-05-05 2018-08-07 安徽理工大学 A kind of beam-column connection in frame structure
CN106337503A (en) * 2016-10-11 2017-01-18 云南震安减震科技股份有限公司 Prefabricated compound shock isolation member for assembling type building
CN106284655B (en) * 2016-10-13 2018-09-07 哈尔滨工业大学 Precast concrete beam stud connects connecting node and connection method
CN107700655B (en) * 2017-10-21 2019-06-28 山东建筑大学 A kind of fabricated construction and its installation method of Special-Shaped Column

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