CN110130485B - Prefabricated assembly type beam column node with toothed plates and assembly method thereof - Google Patents

Prefabricated assembly type beam column node with toothed plates and assembly method thereof Download PDF

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Publication number
CN110130485B
CN110130485B CN201910308917.0A CN201910308917A CN110130485B CN 110130485 B CN110130485 B CN 110130485B CN 201910308917 A CN201910308917 A CN 201910308917A CN 110130485 B CN110130485 B CN 110130485B
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steel
prefabricated
plate
column
toothed
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CN110130485A (en
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鲁正
范俏巧
马乃寅
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Tongji University
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Tongji University
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    • 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
    • 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
    • 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 relates to a prefabricated beam column node with a toothed plate and an assembling method thereof, which comprises a prefabricated column (1) and a prefabricated beam (2), the prefabricated column (1) is provided with an overhanging steel connecting plate (3) and a first connecting steel bar (601), the precast beam (2) is provided with an H-shaped steel (12) with a toothed plate, an M-shaped steel bar (7), a stirrup (8) and a second connecting steel bar (602) which extend outwards, the steel connecting plate (3) is provided with a bolt splicing plate (13) and a bolt hole which are used for connecting the steel connecting plate (3) and the H-shaped steel (12) with the toothed plate, the first connecting steel bar (601) and the second connecting steel bar (602) are connected through a grouting sleeve (5), after the precast columns (1) and the precast beams (2) are sleeved through the overhanging parts, the blank areas are filled with concrete to form a cast-in-situ layer. Compared with the prior art, the invention has the advantages of enhanced connectivity between the components and good anti-seismic effect.

Description

Prefabricated assembly type beam column node with toothed plates and assembly method thereof
Technical Field
The invention belongs to the field of vibration control of civil structures, and particularly relates to a prefabricated assembled beam column node with a toothed plate and an assembling method thereof.
Background
The building industry is the prop industry for the economic development of China. In recent decades, the urbanization process of China has been accelerated, and the number of residences has been increased greatly. Under the condition of high energy consumption, how to advance a novel energy-saving building, promote the development of the energy-saving building and realize the development of an ecological city is a problem to be discussed in the current building industry. The prefabricated building is a modern building structure, prefabricated components are manufactured in a factory in advance and transported to the site, and scattered prefabricated components are combined through a certain assembling process and a certain mechanical construction process to be assembled into a whole. Compared with the traditional construction method of the building structure, the prefabricated structure has the advantages of saving the building cost, realizing streamlined production, reducing the demand on labor force, improving the precision and meeting the demands of different consumers.
The earthquake damage investigation of northern mountain earthquake in 1994 shows that the large-span prefabricated reinforced concrete frame structure is seriously damaged, mainly shown as the connection damage among prefabricated concrete members, and further causes the dispersion and collapse of the whole structure. On one hand, the node plays a role in reasonable transmission in the structure, on the other hand, because each component in the fabricated structure is manufactured in a factory, compared with a cast-in-place component, the node has the disadvantage of lacking integrity like cast-in-place, and the node is mainly embodied in the node. It can be seen that the key to assembling a monolithic structure is the connection of the frame beam-column joints. Therefore, the invention aims to solve the problem of node connection in the existing practical engineering and has great practical significance.
Patent CN109235663A discloses a high-strength threaded bolt assembled connection node, which includes a precast column and a precast beam installed on one side surface of the precast column, a first pressure-bearing end plate and a second pressure-bearing end plate are respectively pre-embedded in the precast column and one end of the precast beam, a plurality of first through holes and a plurality of second through holes are respectively arranged on the first pressure-bearing end plate and the second pressure-bearing end plate, the plurality of first through holes are respectively aligned with the plurality of second through holes, and a high-strength threaded bolt is driven between each first through hole and one second through hole aligned with the first through hole; and angle steel is arranged between the upper end surface and the lower end surface of the precast beam and the side surface of one side of the precast column, and tooth-shaped bolts are driven into two sides of the angle steel. The connectivity between the components of this patent is weak and the shock-resistant effect is not particularly desirable.
Disclosure of Invention
The invention aims to provide a prefabricated beam column node with a toothed plate and an assembling method thereof, aiming at solving the problems of poor anti-seismic performance and insufficient integrity of a connecting node in a prefabricated structure.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a prefabricated assembled beam column node of fishback, includes prefabricated post and precast beam, be equipped with overhanging steel connecting plate and first connecting reinforcement on the prefabricated post, be equipped with overhanging H shaped steel, M shaped steel, stirrup and the second connecting reinforcement of fishback on the precast beam, both are used for connecting the steel connecting plate and take the H shaped steel of fishback, first connecting reinforcement and second connecting reinforcement are connected in order to guarantee the wholeness through the grout sleeve, after prefabricated post and precast beam cup jointed through overhanging part, the blank area adopts the concrete to fill and forms cast-in-place layer.
Furthermore, the side face of the H-shaped steel with the toothed plate is provided with a viscoelastic material plate. Further preferably, the viscoelastic material sheet is selected from one or more of bitumen, water-soluble, latex or epoxy, with fillers added as required.
Further, the steel connecting plate is provided with a bolt splicing plate and a bolt hole, the outer side of the steel connecting plate is provided with a steel plate, and the inner wall of the steel connecting plate is provided with a buffer material so as to increase energy consumption. Further preferably, the buffer material is made of rubber or steel fiber.
Furthermore, the prefabricated column is provided with the metal damper, so that the energy consumption capacity of the node can be increased.
Further, the sizes of the first connecting steel bars, the H-shaped steel with the toothed plate and the second connecting steel bars are smaller than the size of the steel connecting plate and also smaller than the size of the precast beam, which is based on the feasibility of operation, and the steel connecting plate with one side edge and one bottom edge is not installed in assembly, so that subsequent installation and operation are facilitated.
Furthermore, prefabricated post is equipped with a plurality of steel connecting plates in the side, can assemble with a plurality of precast beams, can be applicable to the node design of many roof beams single-column, has more extensive suitability and flexibility.
Furthermore, the diameters, the use amounts and the setting intervals of the M-shaped steel bars and the stirrups are calculated and determined according to specifications and actual conditions so as to adapt to the requirements of different projects in practice.
A method for assembling prefabricated beam-column joints with toothed plates is characterized in that a prefabricated column is integrally cast with a steel connecting plate, first connecting steel bars and bolt splicing plates, the steel connecting plate with one side edge and one bottom edge is not installed at the moment, bolt holes are reserved in the steel connecting plate, the prefabricated beam is integrally cast with H-shaped steel, M-shaped steel bars, stirrups and second connecting steel bars with the toothed plates to ensure the reliability of connection, then the prefabricated column is fixed to a corresponding position, the prefabricated beam is hoisted to the corresponding position, high-strength bolts are installed in the bolt holes through the connecting bolt connecting plate to connect the prefabricated column and the prefabricated beam, the first connecting steel bars and the second connecting steel bars are connected through grouting sleeves, the steel connecting plates with the side edges and the bottom edges of the steel connecting plates which are not installed in advance are welded to the whole, and finally cast-in-place layers are formed by filling concrete in blank areas, and after the maintenance is finished, the buffer material and the steel plate are stuck to the outside of the steel connecting plate at one time, and the metal damper is installed.
Through the high-strength bolts at different positions, the connecting reinforcing steel bars connected by the grouting sleeves, the M-shaped reinforcing steel bars and the stirrups on the precast beams and the utilization of a cast-in-place layer, the purpose of enhancing the integrity between the component and the member is achieved, meanwhile, through the arrangement of the steel plates, the buffer materials, the toothed plates on the H-shaped steel, the viscoelastic material plates and the metal dampers, the energy consumption capacity of the nodes is increased, and the purpose of enhancing the earthquake resistance of the nodes is finally achieved.
Compared with the prior art, the invention has the following advantages:
1) compared with the common connecting node, the H-shaped steel with the toothed plates is added at the prefabricated beam, on one hand, the H-shaped steel is connected to the prefabricated beam through welding, so that the connection reliability can be ensured, and the high-strength bolts penetrate through the web plate of the H-shaped steel and the splicing plates welded on the prefabricated column, so that the connection between the components can be enhanced; on the other hand, the experiment shows that the toothed plate is adopted, the energy consumption capacity of the node can be increased, and the toothed plate and the metal damper below the toothed plate act together, so that a better anti-seismic effect can be achieved.
2) The upper end and the lower end of the precast beam are respectively provided with the M-shaped steel bar and the stirrup below, the M-shaped steel bar and the stirrup can play a certain shearing resisting role, and the node can be guaranteed to be damaged in a strong-shearing and weak-bending mode instead of a strong-bending and weak-shearing mode when an earthquake occurs, so that the aim of enhancing the earthquake resistance is fulfilled, meanwhile, the specific space and the diameter of the steel bar can be changed according to the actual engineering, the steel bar has strong flexibility, and the aim of saving the engineering cost can be fulfilled;
3) compared with the common connecting node, the invention adopts the combination of the cast-in-place layer, the prefabricated component, the high-strength bolt and the connecting steel bar, thereby ensuring the sufficient bonding and reliable connection between the prefabricated components;
4) the connecting steel bars are connected through the grouting sleeve, and tests show that the combination of the grouting sleeve and the steel bars can well ensure the connection performance at the nodes, so that the reliable connection between prefabricated parts is ensured;
5) tests show that under the combined action of the connecting steel bars and the high-strength bolts, on one hand, the connection between the column and the unilateral beam can be enhanced, and on the other hand, the connecting steel bars are connected with the two beams on the same straight line, so that the integrity of a node can be increased closer; the prefabricated column is provided with the steel connecting plates in four directions, so that the prefabricated column can be suitable for node design of multi-beam single columns and has wider applicability and flexibility;
6) according to the invention, the buffer materials are respectively added on the inner wall of the connecting steel plate and below the upper steel plate, and the viscoelastic material plate is attached on the precast beam, so that on one hand, the steel plate has good shaping performance and anti-seismic performance, and on the other hand, the joint anti-seismic performance can be well improved by utilizing the materials and the combined action of the materials.
Drawings
Fig. 1 is a schematic structural view of a prefabricated assembled beam-column joint with toothed plates;
fig. 2 is an exploded view of a prefabricated assembled beam-column joint with a toothed plate in a single direction.
In the figure: 1-prefabricating a column; 2-prefabricating a beam; 3-steel connecting plates; 4-high strength bolts; 5-grouting a sleeve; 601-first connecting bars; 602-a second connecting bar; 7-M type steel bars; 8-stirrup; 9-a steel plate; 10-a buffer material; 11-a sheet of viscoelastic material; 12-H-section steel with toothed plates; 13-bolt splice plate; 14-metal damper.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
Referring to fig. 1 and 2, a prefabricated assembled beam column node of toothed plate, including prefabricated post 1 and prefabricated roof beam 2, be equipped with overhanging steel connecting plate 3 and first connecting reinforcement 601 on the prefabricated post 1, be equipped with overhanging H shaped steel 12 of toothed plate on the prefabricated roof beam 2, M shaped steel muscle 7, stirrup 8 and second connecting reinforcement 602, be equipped with bolt splice plate 13 and bolt hole on the steel connecting plate 3, both are used for connecting steel connecting plate 3 and the H shaped steel 12 of toothed plate, first connecting reinforcement 601 and second connecting reinforcement 602 connect through grout sleeve 5, after prefabricated post 1 and prefabricated roof beam 2 cup joint through overhanging part, blank area adopts the concrete to fill and forms cast-in-place layer.
And a viscoelastic material plate 11 is arranged on the side surface of the H-shaped steel 12 with the toothed plate. The viscoelastic material sheet 11 is selected from one or more of asphalt, water-soluble substance, latex, or epoxy resin, and a filler is added as needed. The steel plate 9 is arranged on the outer side of the steel connecting plate 3, and the buffer material 10 is arranged between the steel connecting plate 3 and the steel plate 9. The cushioning material 10 is made of rubber or steel fiber. The prefabricated column 1 is provided with a metal damper 14. The sizes of the first connecting steel bars 601, the H-shaped steel 12 with the toothed plate and the second connecting steel bars 602 are smaller than the size of the steel connecting plate 3 and smaller than the size of the precast beam 2. The precast column 1 is provided with a plurality of steel connecting plates 3 on the side surface, and can be assembled with a plurality of precast beams 1. The diameters, the use amounts and the setting intervals of the M-shaped steel bars 7 and the stirrups 8 are calculated and determined according to the specifications and the actual conditions.
A prefabricated assembled beam column node with a toothed plate is assembled by integrally casting a prefabricated column 1 with a steel connecting plate 3, a first connecting steel bar 601 and a bolt splicing plate 13, at the moment, leaving the steel connecting plate 3 with one side edge and one bottom edge without installing, leaving a bolt hole on the steel connecting plate 3, integrally casting the prefabricated beam 1 with an H-shaped steel 12, an M-shaped steel bar 7, a stirrup and a 8 second connecting steel bar 602 with the toothed plate, fixing the prefabricated column 1 to a corresponding position, hoisting a prefabricated beam 2 to a corresponding position, installing a high-strength bolt 4 in the bolt hole of the bolt connecting plate 13 to connect the prefabricated column 1 and the prefabricated beam 2, connecting the first connecting steel bar 601 and the second connecting steel bar 602 through a grouting sleeve 5, welding the side edge and the steel connecting plate 3 with the steel connecting plate which is not installed in advance to a whole, and finally filling concrete in a blank area to form a cast-in-place layer, after the maintenance is finished, the buffer material 10 and the steel plate 9 are stuck on the outside of the steel connecting plate 3 at one time, and the metal damper 14 is installed.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (6)

1. A prefabricated assembled beam column node with a toothed plate comprises a prefabricated column (1) and a prefabricated beam (2),
the prefabricated column (1) is provided with an overhanging steel connecting plate (3), a first connecting steel bar (601) and a bolt splicing plate (13), the prefabricated beam (2) is provided with an overhanging H-shaped steel (12) with a toothed plate, an M-shaped steel bar (7), a stirrup (8) and a second connecting steel bar (602),
the first connecting steel bars (601) and the second connecting steel bars (602) are connected through grouting sleeves (5), and after the prefabricated columns (1) and the prefabricated beams (2) are sleeved through the overhanging parts, blank areas are filled with concrete to form cast-in-place layers;
a viscoelastic material plate (11) is arranged on the side surface of the H-shaped steel (12) with the toothed plate;
the inner wall of the steel connecting plate (3) is provided with a buffer material (10);
a metal damper (14) is arranged at the lower part of the joint of the precast column (1) and the precast beam (2);
the steel connecting plate (3) is composed of two side plates and a bottom plate, and a steel plate is arranged on the outer side of the steel connecting plate.
2. Prefabricated assembled beam-column joint with toothed plate according to claim 1, characterized in that said viscoelastic material plate (11) is selected from one or more of asphalt, water soluble, latex or epoxy.
3. The prefabricated assembled beam-column joint with toothed plate according to claim 1, wherein said cushioning material (10) is selected from one or a combination of rubber or steel fiber.
4. The prefabricated assembled beam-column joint with toothed plates according to claim 1, wherein the sizes of the first connecting steel bars (601), the H-shaped steel (12) with toothed plates and the second connecting steel bars (602) are smaller than those of the steel connecting plate (3) and the prefabricated beam (2).
5. The prefabricated assembled beam-column joint with toothed plate according to claim 1, wherein the prefabricated column (1) is provided with a plurality of steel connecting plates (3) at the side surface, and can be assembled with a plurality of prefabricated beams (1).
6. The assembling method of the prefabricated assembled beam column node with the toothed plate according to any one of claims 1 to 5, wherein the prefabricated column (1) is integrally cast with the steel connecting plate (3), the first connecting steel bar (601) and the bolt splicing plate (13), a buffer material is adhered to the inner wall of the steel connecting plate (3), and bolt holes are reserved on the steel connecting plate (3);
integrally pouring the precast beam (2) with H-shaped steel (12) with a toothed plate, M-shaped steel bars (7), stirrups and (8) second connecting steel bars (602);
then fixing the prefabricated column (1) to a corresponding position, hoisting the prefabricated beam (2) to the corresponding position, installing high-strength bolts (4) in the connecting bolt connecting plates (13) and the bolt holes to connect the prefabricated column (1) and the prefabricated beam (2), and connecting the first connecting steel bar (601) and the second connecting steel bar (602) through grouting sleeves (5),
and finally, filling concrete in the blank area to form a cast-in-place layer.
CN201910308917.0A 2019-04-17 2019-04-17 Prefabricated assembly type beam column node with toothed plates and assembly method thereof Active CN110130485B (en)

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CN112575891B (en) * 2020-12-17 2021-10-15 西南交通大学 Low-seismic-loss beam column node based on waveform BFRP connecting plate

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Publication number Priority date Publication date Assignee Title
JP3050136B2 (en) * 1996-09-30 2000-06-12 鹿島建設株式会社 Connection structure between reinforced concrete columns and steel beams with large diameters only in the column reinforcement around the panel zone
JP4376088B2 (en) * 2003-02-28 2009-12-02 新日本製鐵株式会社 Beam joint structure
CN201381556Y (en) * 2009-04-24 2010-01-13 王玥 Connected node of steel girder and combined steel and concrete column
CN103243817B (en) * 2013-04-28 2016-12-28 中国十七冶集团有限公司 A kind of assembled beam-column attachment means
CN205804625U (en) * 2016-07-05 2016-12-14 重庆大学 A kind of case shaped-steel joint bracket for prefabricated assembled concrete center pillar
CN206157894U (en) * 2016-11-12 2017-05-10 吴从晓 Improved generation assembled concrete beam -column joint connection structure
CN206360086U (en) * 2016-11-24 2017-07-28 重庆市中科大业建筑科技有限公司 Clod wash multi-cavity steel tube concrete Special-Shaped Column and the rigid connection node of U-shaped combination beam
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CN108222289A (en) * 2018-03-22 2018-06-29 南京工业大学 A kind of assembled bamboo wood beam-column joint connecting structure
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