CN106948481B - Prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part - Google Patents
Prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part Download PDFInfo
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- CN106948481B CN106948481B CN201710301880.XA CN201710301880A CN106948481B CN 106948481 B CN106948481 B CN 106948481B CN 201710301880 A CN201710301880 A CN 201710301880A CN 106948481 B CN106948481 B CN 106948481B
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- concrete
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- column
- rod iron
- keyway
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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
-
- 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
- E04B1/22—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 with parts being prestressed
Abstract
The present invention discloses a kind of prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part, including precast concrete column (1) and precast concrete beam (2), one end of beams of concrete (2) is shelved on the concrete cover of concrete column (1) upper end, it is formed joint cores (3), there are U-shaped keyway (21) for beams of concrete (2) end, core beam (22) and PC rod iron (23) are equipped in U-shaped keyway (21), beams of concrete (2) end is stretched out in the free end of PC rod iron (23), soap-free emulsion polymeization processing is done to PC rod iron using pvc pipe (4) in keyway；Pier nose bar dowel (5) are respectively equipped in beams of concrete (2) joint cores (3) internal upper part and lower part, are equipped with elongated regular reinforcement (6) on beams of concrete (2) top.Beam-column connection of the invention, low cost, beam column joint surface shearing resistance are strong, easy for construction, anti-seismic performance is good, deformability is strong, cracking resistance is good.
Description
Technical field
The invention belongs to concrete frame structure technical field, especially a kind of low cost, beam column joint surface shearing resistance be strong,
Easy for construction, the good prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part of anti-seismic performance.
Background technique
For the anti-seismic performance requirement for meeting assembly concrete frame structure, generally pass through phase between prefabricated post, precast beam
It closes construction measure and solves the problems, such as its connection reliability.
Currently known connecting structure includes beam-ends setting groove, and beam bottom principal rod uses steel strand wires, and steel strand wires do not anchor into
Joint cores, groove and node area add the connection of the U-shaped reinforcing bar for making overlap joint connection with crotch steel strand wires and cast-in-place concrete
Node；Or beam-ends stays and sets keyway, while steel strand wires anchor into joint cores and go deep into the beam keyway of opposite, while in node core
Additional bar is placed in heart district keyway, it is then whole to be poured onto together；Or beam-ends setting placement table scalariform bracket, beam bottom end stretch out one
The regular reinforcement with crotch of measured length protrudes into beam column node area, the connecting structure of node cast-in-place concrete；Or pass through column side
And beam-ends setting connects steel member, the assembly node being attached between beam column steel member with bolt.
Above-mentioned well known connecting structure, is arranged groove for beam-ends and steel strand wires in slot is made crotch processing, separately set U-shaped steel
Muscle and steel strand wires make the construction of overlap joint connection, and the positioning of site operation U-shaped reinforcing bar is difficult, the steel strand wires in U-shaped muscle and beam end groove
Overlap joint connection transmission force property is poor, causes the ductility of node relatively small；
For directly anchoring into the node in the beam keyway of opposite using steel strand wires, steel strand anchoring performance is poor, for margin knot
Point steel strand anchoring length is relatively inaccessible to require；
The construction that crotch processing directly anchors into node area is done for the reinforcing bar head that certain length is stretched out in beam end lower part,
Different directions beam bottom reinforcing bar protrudes into node area and often there is the mutual collision problem of Liang Yuliang or Liang Yuzhu reinforcing bar, increases prefabricated and peace
Fill difficulty；
Beam column by steel member be bolted contraposition precise requirements it is higher, economic index is bad, and easy-to-rust etc., limit
Its popularization and application is made.
In short, problem of the existing technology is: prefabrication and assembly construction concrete frame beam-column connection cost is high, beam column connects
Conjunction face shearing resistance is not strong enough, construction is inconvenient, anti-seismic performance is not good enough.
Summary of the invention
The purpose of the present invention is to provide a kind of, and the prefabrication and assembly construction concrete frame beam column based on the high strengthening tendons in part connects section
Point, low cost, beam column joint surface shearing resistance are strong, easy for construction, anti-seismic performance is good.
The technical solution for realizing the aim of the invention is as follows:
A kind of prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part, including precast concrete column and
Precast concrete beam, one end of the beams of concrete are shelved on the concrete cover of concrete column upper end, form node core
Heart district, there are U-shaped keyways for the beams of concrete end, and core beam and PC rod iron are equipped in the U-shaped keyway, the PC rod iron
Beams of concrete end is stretched out in free end；Soap-free emulsion polymeization processing is done to PC rod iron using pvc pipe in keyway；In concrete girder connection core
Heart district internal upper part and lower part are respectively equipped with pier nose bar dowel；Elongated regular reinforcement is equipped in beams of concrete internal upper part.
Compared with prior art, the present invention its remarkable advantage are as follows:
1, low cost: the present invention can reduce Liang Yonggang using the Prefabricated pre-tensioned method prestressed concrete beam of configuration PC rod iron
Amount reduces beam section, achievees the purpose that save material, reduces cost；
2, shearing resistance is strong: certain length U-shaped keyway is arranged in prefabricated beam-ends, a core beam is arranged in slot, while setting in keyway
Shear connector is set, the shearing resistance on beam column joint surface is improved；Core beam action primarily to enhancing keyway bottom intensity, prevent
Premature refute of splined portion concrete falls, in addition a core beam can bond concrete；
3, easy for construction: the setting of keyway, it is possible to increase the free bend segment length of PC rod iron can more easily utilize PC steel
The flexibility of stick carries out spatial intersecting bending, and different directions beam bottom reinforcing bar and column muscle easily collide when thoroughly solution precast beam is in place
Construction difficult problem；
4, anti-seismic performance is good: PC rod iron protrudes into node area that bend up sufficiently anchoring, the continuous, node of back reinforcing bar upwards mixed
The one-piece casting of soil is coagulated, strong ties node is realized, the shock resistance of beam, column can be given full play to, improve integrally-built antidetonation energy
Power.
5, cracking resistance is good: applying prestressing force to the PC rod iron of precast beam configuration, can effectively solve the problem that configuration high tensile reinforcement
Distress in concrete carries out wide problem.
6, deformability is strong: by placing two pier nose reinforcing bars respectively at the position up and down that beam column combines, while in keyway
It is interior that one section of soap-free emulsion polymeization processing is done to PC rod iron, to realize enhancing beam column binding site, realize beam-ends plastic hinge, increase section
Point deformation ability.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is that the present invention is based on the structural representations of the prefabrication and assembly construction concrete frame beam-column connection of the high strengthening tendons in part
Figure.
Fig. 2 is the internal structure detail drawing of pre-tension prestressed concrete beam in Fig. 1.
Fig. 3 is the detail of construction of pier nose bar dowel in Fig. 1.
In figure, precast concrete column 1, precast concrete beam 2, joint cores 3, U-shaped keyway 21, core beam 22, PC rod iron
23, pvc pipe 4, pier nose bar dowel 5, regular reinforcement 6.
Specific embodiment
As shown in Figure 1, the present invention is based on the prefabrication and assembly construction concrete frame beam-column connection of the high strengthening tendons in part, including it is pre-
One end of concrete column 1 and precast concrete beam 2 processed, the beams of concrete 2 is shelved on the concrete protective of 1 upper end of concrete column
On layer, joint cores 3 are formed, there are U-shaped keyways 21 for 2 end of beams of concrete, and core beam is equipped in the U-shaped keyway 21
2 end of beams of concrete is stretched out in the free end of 22 and PC rod iron 23, the PC rod iron 23；Using pvc pipe 4 to PC rod iron in keyway
Do soap-free emulsion polymeization processing；In 2 joint cores of beams of concrete, 3 internal upper part and lower part are respectively equipped with pier nose bar dowel 5；In beams of concrete
2 internal upper parts are equipped with elongated regular reinforcement 6.
The setting of U-shaped keyway 21 can fully consider force request, beam column that pre- PC rod iron anchoring requirement, beam are temporarily shelved
The many factors such as joint surface shearing resistance requires and the bending of PC rod iron is convenient are comprehensive to be determined.
It placed pier nose bar dowel respectively on the top of prefabricated joint cores and lower part, strengthen beam column binding site
Intensity enhances column joints deformation ability so as to realize that beam plastic hinge shifts outward, improves Seismic Behavior.
It is provided with one small core beam in beam end U-lag length range, thereby may be ensured that keyway lower concrete exists
It is unlikely to bulk peeling under seismic loading.
Certain length U-shaped keyway is arranged in prefabricated beam-ends, a core beam is arranged in slot, while shear connector being arranged in keyway, mentions
The high shearing resistance on beam column joint surface.In addition, the setting of keyway, it is possible to increase the free bend segment length of PC rod iron can be more convenient
Ground carries out spatial intersecting bending using the flexibility of PC rod iron, different directions beam bottom reinforcing bar and column when thoroughly solution precast beam is in place
The construction difficult problem that muscle easily collides.
As shown in Fig. 2, the PC rod iron 23 for stretching out 2 end of beams of concrete is folded upward at.
PC rod iron protrudes into node area and bends up sufficiently anchoring upwards, continuous, node concrete the entirety of back reinforcing bar is poured
It builds, realizes strong ties node, the shock resistance of beam, column can be given full play to, improve integrally-built shock resistance
PC rod iron end decides whether to bend up upwards as needed, and beam-ends PC rod iron can be using its flexibility from U-lag
Initial point starts flexibly to be bent, and can smoothly avoid column muscle in node installation process and opposite beam muscle anchors into node area, facilitate
The prefabricated and field node of beam is installed.
Prefabricated pre-tensioned method prestressed concrete beam 1 is in hoisting process, by beam bottom end PC rod iron 23 in keyway inner bending,
It avoids colliding with prefabricated post vertical reinforcement, facilitates lifting operation.One section use pvc pipe of the PC rod iron in keyway is done at soap-free emulsion polymeization
Reason, in this way can taking human as make plastic hinge present in this.It is prefabricated it is beam prefabricated in, a prior pre-buried shorter bearing rod,
Facilitate the binding of keyway inner core beam steel.
22 length of core beam is slightly less than 21 length of U-shaped keyway.
As shown in figure 3, pier nose bar dowel 4 is placed at position above and below node both sides U-shaped groove 21 and joint cores, help
In the intensity for further strengthening the prefabricated beam column faying face in node area, beam-ends plastic hinge can be made to appear in scheduled position.
The beams of concrete 2 is prefabricated using pre-tensioning system.
Using the Prefabricated pre-tensioned method prestressed concrete beam of configuration PC rod iron, beam steel using amount can be reduced or reduce beam section,
Achieve the purpose that save material, reduce cost；Details are as follows for node concrete construction method: concrete column is layered prefabricated, pre-tensioning system
Prestressed concrete beam is segmented prefabricated by span, and precast beam is shelved on prefabricated post concrete cover by when installation, beam inner end
The PC rod iron that portion is stretched out protrudes into anchoring in column, rear to place node area bottom and top pier nose reinforcing bar, is inserted into back regular reinforcement, section
Point cast-in-place concrete.Form fabricated assembly overall connecting node.
The present invention makes full use of the flexibility of prestressing force PC rod iron and the setting of beam-ends certain length keyway, hangs in precast beam
During dress, it can all avoid column muscle according to the position of live different directions beam bottom PC rod iron, free folding and anchor into node area,
Thoroughly overcome the construction difficult problem of the stress main reinforcement Yi Yuzhu muscle collision of beam bottom end stretching.
Claims (2)
1. a kind of prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part, including precast concrete column (1)
It is shelved on the concrete cover of concrete column (1) upper end with one end of precast concrete beam (2), the beams of concrete (2),
It is formed joint cores (3), it is characterised in that:
There are U-shaped keyway (21) for beams of concrete (2) end, and core beam (22) and PC steel are equipped in the U-shaped keyway (21)
Beams of concrete (2) end is stretched out in the free end of stick (23), the PC rod iron (23), using pvc pipe (4) to PC rod iron in keyway
Do soap-free emulsion polymeization processing；
Pier nose bar dowel (5) are respectively equipped in beams of concrete (2) joint cores (3) internal upper part and lower part；
Elongated regular reinforcement (6) is equipped in beams of concrete (2) internal upper part；
The PC rod iron (23) for stretching out beams of concrete (2) end is folded upward at；
The beams of concrete (2) is prefabricated using pre-tensioning system.
2. beam-column connection according to claim 1, it is characterised in that:
Core beam (22) length is slightly less than U-shaped keyway (21) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301880.XA CN106948481B (en) | 2017-05-02 | 2017-05-02 | Prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301880.XA CN106948481B (en) | 2017-05-02 | 2017-05-02 | Prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part |
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| Publication Number | Publication Date |
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| CN106948481A CN106948481A (en) | 2017-07-14 |
| CN106948481B true CN106948481B (en) | 2019-05-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905402A (en) * | 2017-11-30 | 2018-04-13 | 扬州大学 | A kind of assembled RPC/ Combined concretes frame energy-dissipating and shock-absorbing node |
| CN109930690A (en) * | 2019-04-15 | 2019-06-25 | 华东建筑设计研究院有限公司 | A kind of reinforced concrete structure, beam, column and building |
| CN111648468B (en) * | 2020-06-04 | 2022-01-28 | 瀚阳国际工程咨询有限公司 | Ultrahigh space utilization rate fabricated building system and efficient construction method thereof |
| CN112081242B (en) * | 2020-09-30 | 2022-05-13 | 东南大学 | Assembled integral beam-column joint provided with shape memory alloy reinforcement and construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207414A (en) * | 2011-03-29 | 2012-10-25 | Takenaka Komuten Co Ltd | Joint structure for reinforced concrete beam |
| CN103924731A (en) * | 2014-04-11 | 2014-07-16 | 北京工业大学 | Reinforced concrete beam with non-adhesive ends and preparation method thereof |
| CN105256891A (en) * | 2015-09-17 | 2016-01-20 | 东南大学 | Prefabricated concrete frame structure with high-strength bottom bars |
| CN105735469A (en) * | 2016-02-23 | 2016-07-06 | 同济大学 | Partially-bonded precast prestressed concrete frame structure |
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2017
- 2017-05-02 CN CN201710301880.XA patent/CN106948481B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207414A (en) * | 2011-03-29 | 2012-10-25 | Takenaka Komuten Co Ltd | Joint structure for reinforced concrete beam |
| CN103924731A (en) * | 2014-04-11 | 2014-07-16 | 北京工业大学 | Reinforced concrete beam with non-adhesive ends and preparation method thereof |
| CN105256891A (en) * | 2015-09-17 | 2016-01-20 | 东南大学 | Prefabricated concrete frame structure with high-strength bottom bars |
| CN105735469A (en) * | 2016-02-23 | 2016-07-06 | 同济大学 | Partially-bonded precast prestressed concrete frame structure |
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