CN109024884B - Node in bolt reinforcing bar bolt prefabricated assembly concrete beam column - Google Patents
Node in bolt reinforcing bar bolt prefabricated assembly concrete beam column Download PDFInfo
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- CN109024884B CN109024884B CN201710429938.9A CN201710429938A CN109024884B CN 109024884 B CN109024884 B CN 109024884B CN 201710429938 A CN201710429938 A CN 201710429938A CN 109024884 B CN109024884 B CN 109024884B
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- steel bar
- bolt
- concrete beam
- nut
- connecting steel
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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 middle node of a bolt steel bar bolt prefabricated concrete beam column, which belongs to the field of constructional engineering and comprises the following components: the prefabricated concrete column, the prefabricated concrete beam, the connecting steel bar, the nut, the end nut and the bolt plate are arranged on the prefabricated concrete column; empty grooves are reserved at the upper parts of two ends of the precast concrete beam at a certain distance from the section of the end part to form sinking steps, and protruding steps are arranged at the lower parts of two ends of the precast concrete beam; when the precast beam is not hoisted, the connecting steel bars are arranged in the reserved empty grooves, and after the precast beam is hoisted in place, the connecting steel bars penetrate through the steel bar reserved holes; the bolt plate is inserted into a bolt plate groove of the precast concrete beam; the nuts are screwed on the thread sections at the two ends of the connecting steel bar and cling to the sunken steps and the protruding steps; the end nut is tightly attached to the bolt plate. The invention has simple and fast installation, high efficiency, good structural performance and capability of transmitting the tension and compression performance of the reinforcing steel bar.
Description
Technical Field
The invention relates to a middle node of a bolt, steel bar and bolt prefabricated concrete beam column, and belongs to the field of constructional engineering.
Background
The components of the prefabricated concrete structure are produced in a factory and then the prefabricated components are transported to construction for assembly. The construction mode can greatly improve the mechanized construction level, reduce constructors, save construction time, accelerate construction progress and reduce construction cost. The development of the precast concrete structure is an effective way for realizing building industrialization, can effectively save resources, reduce environmental pollution, is beneficial to improving the modernization development level of the national building industry, and has wide development prospect.
The key of the structure performance of the precast concrete frame lies in beam-column joint connection, and the safety and reliability of the structure can be ensured only if the precast beam-column joint connection is reliable. Meanwhile, the precast concrete frame beam column joint is also a key factor influencing the rapid and convenient construction of the precast concrete frame structure. At present, conventional prefabricated connecting nodes mainly comprise post-cast 'wet' connecting nodes, bolt connecting nodes, welding connecting nodes and the like. The post-cast wet connecting joint usually leaves a protruding reinforcing steel bar at the end of the precast beam, and the hoisting efficiency of the precast beam and the precast column is seriously influenced; the bolt connection node has the condition of inconvenient operation on site, the conventional bolt can only be pulled usually, and the auxiliary section steel node is required to be pre-embedded generally, so that the connection efficiency and performance are influenced; the welding connection node is in a narrow and small field range, manual operation is inconvenient, welding quality is difficult to guarantee, and efficiency is low.
Disclosure of Invention
The invention aims to provide a middle node of a bolt-steel bar bolt prefabricated concrete beam column, which is convenient and quick to install by adopting dry connection, and simultaneously ensures the anti-seismic performance of the middle node of beam column connection by utilizing the pulling and pressing performance of steel bars.
In order to achieve the purpose, the invention adopts the following technical scheme.
Node in bolt reinforcing bar bolt prefabricated assembly concrete beam column includes: the prefabricated concrete column, the prefabricated concrete roof beam, the connecting reinforcement, nut, end nut, bolt board.
And the prefabricated concrete column is provided with a reinforcing steel bar hole in the node area for penetrating through the connecting reinforcing steel bar.
The cavity is reserved at certain distance from the tip cross-section on precast concrete roof beam both ends upper portion for precast beam end upper portion forms the step that sinks, and long cavity is reserved to one end, and the short cavity is reserved to one end, the length of long cavity slightly is greater than the coupling bar length with the difference of the distance of long cavity to the beam-ends cross-section, long cavity is in the precast beam is not connected during the precast column, is used for depositing coupling bar avoids coupling bar stretches out the beam-ends, influences hoist and mount efficiency.
The prefabricated beam both ends lower part is equipped with outstanding step, sink the step with outstanding step reservation reinforcing bar hole, prefabricated roof beam erects prefabricated post both ends, the reservation hole corresponds each other for pass the connecting reinforcement.
And pin plate grooves are reserved at the rear parts of the sunken step and the protruding step, after the connecting steel bars penetrate through the reserved holes, epoxy glue is coated on the parts inserted into the pin plate grooves by the pin plates, and then the pin plates are inserted into the reserved pin plates to be used for propping against the connecting steel bars or the end nuts.
The bolt plate is characterized in that thread sections are arranged at two ends of the connecting steel bar, the connecting steel bar is arranged in the long hollow groove when the precast beam is not hoisted in place, and the precast beam penetrates through the preformed hole after being hoisted in place to tightly push the bolt plate in the short hollow groove.
And the nut is timely screwed on the thread sections at the two ends of the connecting steel bar after the connecting steel bar penetrates through the preformed hole, and the nut is further screwed after the connecting steel bar is in place and clings to the sunken step and the protruding step so as to transfer the tension of the connecting steel bar.
The length of the end nut is three times of that of a common nut with the same specification, an end plate slightly larger than the nut is arranged at one end of the end nut, the end nut is tightly screwed on a threaded section at one end of the long hollow groove of the connecting steel bar before the bolt plate is inserted into the bolt groove, and after the bolt plate is inserted into the bolt groove, the end nut is unscrewed towards the direction of the long hollow groove and is tightly attached to the bolt plate in the long hollow groove, so that the pressure of the connecting steel bar is transmitted.
Advantageous effects
Compared with the prior art, the invention has the following advantages:
(1) the invention adopts 'dry' connection to form the precast concrete frame beam column joint, and has no wet operation on site, high installation efficiency and high construction speed.
(2) According to the invention, the connecting steel bars do not extend out of the end faces of the precast beams when the precast beams are not installed, the problem of mutual 'racking' of the steel bars extending out of the ends of the conventional precast beams is solved, and after the precast beams are installed in place, the connecting steel bars pass through the preformed holes, so that the method can be suitable for field installation of integral prefabrication of multilayer columns, and is simple, convenient and rapid, and high in efficiency.
(3) The connecting reinforcing steel bar can effectively transmit tension and pressure to form rigid connection, so that the stress performance of the beam-column connecting node is ensured, meanwhile, the connecting reinforcing steel bar is not bonded in a pore channel, has good deformability and higher anti-seismic energy consumption capacity, and can effectively ensure the structural performance of the connecting node under the action of seismic load.
Drawings
FIG. 1 is a schematic diagram of the present invention with the components separated.
Fig. 2 is a schematic view of a precast concrete beam of the present invention.
FIG. 3 is a schematic diagram of node assembly in connection according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-3: and the prefabricated concrete column 1 is provided with a reinforcing steel bar hole 2 in a node area.
Empty grooves are reserved at the positions, away from the cross section of the end part, of the upper parts of the two ends of the precast concrete beam 3 at certain distances, so that a sunken step 4 is formed at the upper part of the precast beam end, a long empty groove 5 is reserved at one end, a short empty groove 6 is reserved at one end, and the length of the long empty groove 6 is slightly larger than the difference between the length of the connecting steel bar 7 and the distance from the long empty groove 5 to the cross section of the beam end.
And a bolt plate groove 9 is reserved at the rear parts of the sunken step 4 and the protruding step 8.
And thread sections are arranged at two ends of the connecting steel bar 7, when the precast beam 3 is not hoisted in place, the connecting steel bar 7 is arranged in the long hollow groove 5, and the nut 10 and the end nut 11 are screwed at one end of the connecting steel bar 7.
When the precast beam 3 is hoisted to two sides of the node area of the precast column 1, the connecting steel bars 7 penetrate through the precast column 1 and the reserved steel bar holes 2 of the precast beam 3, and the lower part of the bolt plate 12 is coated with epoxy glue and inserted into the bolt grooves 9.
The nut 13 is screwed on the thread section of the connecting steel bar 7 in the direction of the short hollow groove 6, the connecting steel bar 7 tightly pushes the bolt plate 12 in the direction of the short hollow groove 6, and the nuts 10 and 13 are screwed tightly and tightly attached to the sunken step 4 and the protruding step 8.
The length of the end nut 11 is three times of that of a common nut with the same specification, an end plate slightly larger than the nut 10 is arranged at one end of the end nut, and after the bolt plate 12 is inserted into the bolt groove 9, the end nut 11 is unscrewed towards the direction of the long empty groove 6 and is tightly attached to the bolt plate 12 in the long empty groove.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the spirit and scope of the invention.
Claims (3)
1. Node in bolt reinforcing bar bolt prefabricated assembly concrete beam column, its characterized in that includes: the prefabricated concrete column, the prefabricated concrete beam, the connecting steel bar, the nut, the end nut and the bolt plate are arranged on the prefabricated concrete column;
the prefabricated concrete column is provided with a reinforcing steel bar hole in a node area;
reserving empty grooves at positions, which are at a certain distance away from the section of the end part, at the upper parts of two ends of the precast concrete beam to form a sinking step, reserving a long empty groove at one end, reserving a short empty groove at the other end, wherein the length of the long empty groove is slightly larger than the difference between the length of the connecting steel bar and the distance from the long empty groove to the section of the beam end, protruding steps are arranged at the lower parts of two ends of the precast concrete beam, steel bar holes are reserved in the sinking step and the protruding steps, bolt plate grooves are reserved at the rear parts of the sinking step and the protruding steps, the precast concrete beam is erected at two ends of the precast concrete column, and the reserved steel bar holes correspond to each other;
the bolt plate is inserted into the bolt plate groove;
threaded sections are arranged at two ends of the connecting steel bar and inserted into the reserved steel bar holes;
the nuts are screwed on the thread sections at the two ends of the connecting steel bar and cling to the sunken steps and the protruding steps;
the end nut is screwed at one end of the connecting steel bar, which is positioned at the long empty groove, and is tightly attached to the bolt plate;
when the precast concrete beam is not installed at a preset position, the bolt plate is inserted into the bolt plate groove of the short empty groove, and the connecting steel bar is arranged in the long empty groove;
after the precast concrete beam is hoisted to a preset position, the connecting steel bar penetrates through the reserved steel bar hole, the end part of the connecting steel bar is tightly attached to the bolt plate in the short empty groove, the nut is screwed, and the end nut is unscrewed towards the long empty groove and tightly attached to the bolt plate in the long empty groove.
2. The node in a bolt reinforcing bar bolt prefabricated assembly concrete beam column of claim 1, characterized in that: and epoxy glue is coated on the part of the plug pin plate inserted into the plug pin plate groove.
3. The node in a bolt reinforcing bar bolt prefabricated assembly concrete beam column of claim 1, characterized in that: the length of the end nut is three times of that of a common nut with the same specification, and an end plate slightly larger than the end nut is arranged at one end of the end nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429938.9A CN109024884B (en) | 2017-06-09 | 2017-06-09 | Node in bolt reinforcing bar bolt prefabricated assembly concrete beam column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429938.9A CN109024884B (en) | 2017-06-09 | 2017-06-09 | Node in bolt reinforcing bar bolt prefabricated assembly concrete beam column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109024884A CN109024884A (en) | 2018-12-18 |
| CN109024884B true CN109024884B (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710429938.9A Active CN109024884B (en) | 2017-06-09 | 2017-06-09 | Node in bolt reinforcing bar bolt prefabricated assembly concrete beam column |
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| Country | Link |
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| CN (1) | CN109024884B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797476Y (en) * | 2005-04-22 | 2006-07-19 | 北京工业大学 | Mixed jointing node of assembled concrete frame structure beam column |
| KR20060093889A (en) * | 2005-02-23 | 2006-08-28 | 유승룡 | Dry joint structure of precast concrete beam and column unit |
| CN103195170A (en) * | 2013-04-03 | 2013-07-10 | 中铁建设集团有限公司 | Prefabricated reinforced concrete frame structure system |
| CN103362210A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | Prestress assembly frame structure |
| CN203866982U (en) * | 2014-05-28 | 2014-10-08 | 江苏尚昇建设集团有限公司 | Prefabricated beam end joint structure |
| CN105839775A (en) * | 2016-05-24 | 2016-08-10 | 东南大学 | Beam end crossed arc-shaped post-tensioned pre-stressed reinforcing steel dry-type assembling beam-column node |
| CN205875395U (en) * | 2016-08-02 | 2017-01-11 | 北京市建筑工程研究院有限责任公司 | Prestressing force is from restoring to throne assembled concrete frame beam column node |
| CN104727439B (en) * | 2015-03-09 | 2017-01-18 | 沈阳建筑大学 | Assembly concrete pillar and beam structure and assembly connecting method |
-
2017
- 2017-06-09 CN CN201710429938.9A patent/CN109024884B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060093889A (en) * | 2005-02-23 | 2006-08-28 | 유승룡 | Dry joint structure of precast concrete beam and column unit |
| CN2797476Y (en) * | 2005-04-22 | 2006-07-19 | 北京工业大学 | Mixed jointing node of assembled concrete frame structure beam column |
| CN103195170A (en) * | 2013-04-03 | 2013-07-10 | 中铁建设集团有限公司 | Prefabricated reinforced concrete frame structure system |
| CN103362210A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | Prestress assembly frame structure |
| CN203866982U (en) * | 2014-05-28 | 2014-10-08 | 江苏尚昇建设集团有限公司 | Prefabricated beam end joint structure |
| CN104727439B (en) * | 2015-03-09 | 2017-01-18 | 沈阳建筑大学 | Assembly concrete pillar and beam structure and assembly connecting method |
| CN105839775A (en) * | 2016-05-24 | 2016-08-10 | 东南大学 | Beam end crossed arc-shaped post-tensioned pre-stressed reinforcing steel dry-type assembling beam-column node |
| CN205875395U (en) * | 2016-08-02 | 2017-01-11 | 北京市建筑工程研究院有限责任公司 | Prestressing force is from restoring to throne assembled concrete frame beam column node |
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| Publication number | Publication date |
|---|---|
| CN109024884A (en) | 2018-12-18 |
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