CN203200925U - Prefabricated concrete framework beam column connected node structure - Google Patents
Prefabricated concrete framework beam column connected node structure Download PDFInfo
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- CN203200925U CN203200925U CN 201320189497 CN201320189497U CN203200925U CN 203200925 U CN203200925 U CN 203200925U CN 201320189497 CN201320189497 CN 201320189497 CN 201320189497 U CN201320189497 U CN 201320189497U CN 203200925 U CN203200925 U CN 203200925U
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Abstract
The utility model discloses a prefabricated concrete framework beam column connected node structure, which comprises a prefabricated concrete column and a prefabricated concrete beam, wherein the prefabricated concrete beam and the prefabricated concrete column are installed in a fit way to form a beam column node; the end part, facing the prefabricated concrete column, of the prefabricated concrete beam is provided with a U-shaped groove, a prestress steel strand is arranged in the prefabricated concrete beam in the length direction, the tail section of the prestress steel strand stretches out from a cavity of the U-shaped groove, the tail end of the prestress steel strand is provided with an embossing anchor, the embossing anchor is anchored in the beam column node or inside other U-shaped grooves of the beam column node, and the beam column node is fixed by pouring the concrete in a beam column node area. By adequately utilizing the flexibility of the steel strand inside the groove on the end part of the beam, the steel strand can be directly anchored into the beam column node area by avoiding a column bar and a beam bar, so that the extension of the prefabricated framework node can be improved, the strong column and weak beam can be realized, the construction can be simplified, the cost can be reduced, and the prefabricated concrete framework beam column connected node can be directly applied to the engineering practice.
Description
Technical field
The utility model relates to a kind of prefabrication and assembly construction concrete frame beam-column connection structure, belongs to construction work concrete frame structure technical field.
Background technology
For satisfying the anti-seismic performance requirement of assembly concrete frame construction, generally solve its connection reliability problem by the relative configurations measure between prefabricated post, the precast beam.Present known connection structure comprises that beam-ends arranges groove, and prestress wire is made crotch processing, groove and node area and set up with the crotch steel strand and make U-shaped reinforcing bar that overlap joint is connected and the connected node of node cast-in-situ concrete at the bottom of the beam in groove; Or beam-ends arranges the plain bars with crotch that placement table scalariform bracket, beam bottom stretch out certain-length and stretches into beam column node area, the connection structure of node cast-in-situ concrete; Or arrange by post side and beam-ends and to connect steel member, the assembly node that connects with bolt between beam column steel member.
Above-mentioned known connection structure, groove is set and steel strand in the groove are done the crotch processing for beam-ends, other establishes the U-shaped reinforcing bar and makes the structure that overlap joint is connected with steel strand, site operation U-shaped reinforcing bar location is difficult, it is relatively poor that steel strand overlap joint in U-shaped muscle and the beam end groove is connected transmission force property, causes the ductility less of node; The reinforcing bar head that stretches out certain-length for the beam end bottom is made crotch and is processed the structure that directly anchors into node area, and reinforcing bar stretches into node area and often has beam and beam or beam and the mutual collision problem of post reinforcing bar at the bottom of its different directions beam, increases prefabricated and installation difficulty; Beam column connects the contraposition accuracy by steel member bolt has relatively high expectations, and economic index is bad, and easy-to-rust etc., limited it and applied.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of prefabrication and assembly construction concrete frame beam-column connection structure, kept the design of beam end groove structure, when steel strand directly anchor in the beam column node area at the bottom of guaranteeing beam, take full advantage of the flexibility of steel strand in the beam end groove, so that steel strand can be avoided the post muscle and the beam muscle directly anchors into beam column node area, improve the ductility of prefabrication and assembly construction frame joint, can realize strong column and weak beam, simplify construction, reduce cost, can directly apply to engineering practice.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of prefabrication and assembly construction concrete frame beam-column connection structure comprises precast concrete column and precast concrete beam, and the suitable installation of described precast concrete beam and precast concrete column also forms bean column node; Described precast concrete beam is provided with U-shaped groove towards the end of precast concrete column, be provided with prestress wire along its length in the described precast concrete beam, the rear of described prestress wire stretches out in the cavity of U-shaped groove, its tail end is provided with the embossing anchor, described embossing anchor is anchored in the bean column node or in other U-shaped grooves of this bean column node, described bean column node is fixed by bean column node zone concreting.
If the embossing anchor is anchored in other U-shaped grooves, in general: if cross beam column node is anchored in the U-shaped groove of facing mutually; Bean column node for the building turning is anchored in the adjacent U-shaped groove.
Above-mentioned bean column node mounting structure, the prior art of comparing, the U-shaped groove structure that has kept the precast concrete beam end, but changed the processing mode that the precast concrete beam bottom is positioned at the prestress wire of U-shaped groove, its rear that stretches out the precast concrete beam end face is directly anchored into beam column node area, and rear made the embossing anchor, improve its anchoring.Prestress wire can utilize its flexibility to begin to do flexible bending from U-shaped groove starting point, in the node installation process, can avoid smoothly post muscle and beam muscle with anchor in the bean column node or opposite/adjacent U-shaped groove in, made things convenient for the installation of the prefabricated and on-the-spot node of post, beam.
Specifically, this case takes full advantage of the flexibility of prestress wire and the U-shaped groove of precast concrete beam end certain-length, in the precast concrete beam hoisting process, prestress wire in the U-shaped groove can upwards bend youngster and not stretch out beam-ends, avoid colliding with the prefabricated post muscle in the prefabricated units installation process, make things convenient for hoisted in position; In precast concrete beam process in place, can be according to the position of on-the-spot different directions prestress wire, free folding is all avoided the post muscle and is anchored into node area, thoroughly overcomes the construction difficult problem that muscle is easy and the post muscle collides of being advocated that stretch out the precast concrete beam bottom.And the setting of U-shaped groove can take into full account that force request, the shearing resistance of beam column mating face that prestress wire anchoring requirement, beam shelve temporarily require and the many factors such as bending facility of prestress wire are comprehensively determined.
Preferably, described precast concrete beam is Prefabricated pre-tensioned method prestressed concrete beam.
Preferably, also comprise bolt anchor head bar dowel, described bolt anchor head bar dowel two ends lay respectively in two U-shaped grooves of the precast concrete beam of facing mutually, the middle part is across beam column node core area; The basifacial anti-crack ability of beam column piece has been strengthened in arranging of bolt anchor head bar dowel, and offers help for the assembling framework plastic hinge appears on the beam of post, improves the ductility of bean column node.
Preferably, described precast concrete beam is placed with one group of beam stirrup along its length.
More preferred, the beam stirrup that design is positioned at U-shaped groove position is arranged density greater than the beam stirrup at other positions density of arranging; This design can allow the plastic hinge of precast concrete beam end appear in the scope on post limit.
More preferred, also comprise the back plain bars, described back plain bars is inserted in the beam stirrup; By the design of back plain bars, so that whole bean column node becomes a monolithic node.
Preferably, described precast concrete beam places on the concrete cover of precast concrete column.
Preferably, dispose post vertical posts muscle in the described precast concrete column, dispose the longitudinal beam muscle in the described precast concrete beam.
The basic job practices of this case is: at first that the concrete column layering is prefabricated, pre-tension prestressed concrete beam is by the span prefabricate; During installation precast beam is shelved on the concrete cover of precast concrete column; the prestress wire that the beam inner end stretches out gos deep into anchoring in the post, and rear placement node area bolt anchor head bar dowel inserts the back plain bars; node cast-in-situ concrete forms the fabricated assembly overall connected node.
Beneficial effect: the prefabrication and assembly construction concrete frame beam-column connection structure that the utility model provides, has following advantage: 1) adopt Prefabricated pre-tensioned method prestressed concrete beam, can reduce the beam steel using amount or reduce beam section, reach the purpose of economical with materials, reduction cost; 2) prefabricated beam-ends arranges certain-length U-shaped groove, and groove inner concrete and node concrete monobloc cast have improved the shearing resistance on beam column mating face, and can increase the anchorage length of prestress wire at the bottom of the beam; In addition, the setting of U-shaped groove, can increase the free bend segment length of prestress wire, can utilize more easily the flexibility of prestress wire to carry out the spatial intersecting bending, thoroughly solve the precast beam construction difficult problem that reinforcing bar and post muscle easily collide at the bottom of the different directions beam when in place; 3) the prestress wire head stretch into node area with embossing anchor one end in addition insert fully anchoring in the U-lag of opposite precast beam, back reinforcing bar continuously, the monobloc cast of node concrete, realize strong connected node, can give full play to the shock resistance of beam, post, improve integrally-built shock resistance; 4) the prestress wire bending that can make progress is stretched out in the precast beam end in groove, avoids in the hoisting process and the collision of prefabricated post vertical reinforcement, makes things convenient for hoisted in position.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic three dimensional views of precast concrete beam prestress wire bending in hoisting process;
Fig. 3 is the structural representation of bolt anchor head bar dowel;
Fig. 4 is prestress wire and bolt anchor head reinforcement placement in the beam-ends U-shaped groove.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Be depicted as a kind of prefabrication and assembly construction concrete frame beam-column connection structure such as Fig. 1,2,3,4, comprise precast concrete column 1 and precast concrete beam 2, described precast concrete beam 2 and precast concrete column 1 suitable installation also form bean column node; Described precast concrete beam 2 is provided with U-shaped groove 3 towards the end of precast concrete column 1, be provided with prestress wire 4 along its length in the described precast concrete beam 2, the rear of described prestress wire 4 stretches out in the cavity of U-shaped groove 3, its tail end is provided with embossing anchor 9, and described embossing anchor 9 is anchored in the bean column node or in other U-shaped grooves 3 of this bean column node; Described bean column node is built fixing by bean column node zone concrete 5.
Wherein, described precast concrete beam 2 is Prefabricated pre-tensioned method prestressed concrete beam; Dispose the post vertical reinforcement in the described precast concrete column 1, dispose the longitudinal beam muscle in the described precast concrete beam 2; Described precast concrete beam 2 is placed with one group of beam stirrup 6 along its length, and the beam stirrup 6 that is positioned at U-shaped groove 3 positions is arranged density greater than the beam stirrup 6 at other positions density of arranging.
The job practices of above-mentioned bean column node is:
(1) at first that concrete column 1 layering is prefabricated, pre-tension prestressed concrete beam 2 is by the span prefabricate;
(2) with concrete beam 2 lifting and be shelved on the concrete cover of concrete column 1 temporarily, prestress wire 4 manually is bent to form interlaced arrangement according to the physical location of on-the-spot post muscle, and stretch in the bean column node or other U-shaped groove 3 interior abundant anchorings;
(3) in the U-shaped groove on bean column node both sides, place bolt anchor head bar dowel 8 with beam column node core area;
(4) back plain bars 7 is inserted in the beam stirrup 6, and colligation is fixed;
(5) cast in situs bean column node zone concrete 5 forms the fabricated assembly overall beam-column connection.
As shown in Figure 2, Prefabricated pre-tensioned method prestressed concrete beam 2 is in hoisting process, and prestress wire 4 can be in U-shaped groove 3 inner bendings, avoid with concrete column 1 in the collision of post muscle, make things convenient for lifting operation; One end of prestress wire 4 is made embossing anchor 9, can make like this prestress wire 4 reliably anchor into node area.
As shown in Figure 4: in node both sides U-shaped groove 3 and joint cores, put bolt anchor head bar dowel 8, help further to strengthen the intensity of the prefabricated beam column bonding surface of node area, can make the beam-ends plastic hinge appear at preposition.
The above only is preferred embodiment of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a prefabrication and assembly construction concrete frame beam-column connection structure comprises precast concrete column (1) and precast concrete beam (2), and described precast concrete beam (2) and the suitable installation of precast concrete column (1) also form bean column node; It is characterized in that: described precast concrete beam (2) is provided with U-shaped groove (3) towards the end of precast concrete column (1), be provided with prestress wire (4) along its length in the described precast concrete beam (2), the rear of described prestress wire (4) stretches out in the cavity of U-shaped groove (3), its tail end is provided with embossing anchor (9), described embossing anchor (9) is anchored in the bean column node or in other U-shaped grooves (3) of this bean column node, described bean column node is built fixing by bean column node zone concrete (5).
2. prefabrication and assembly construction concrete frame beam-column connection according to claim 1 is constructed, and it is characterized in that: described precast concrete beam (2) is Prefabricated pre-tensioned method prestressed concrete beam.
3. prefabrication and assembly construction concrete frame beam-column connection according to claim 1 is constructed, it is characterized in that: also comprise bolt anchor head bar dowel (8), described bolt anchor head bar dowel (8) two ends lay respectively in two U-shaped grooves (3) of the precast concrete beam (2) of facing mutually, the middle part is across beam column node core area.
4. prefabrication and assembly construction concrete frame beam-column connection according to claim 1 is constructed, and it is characterized in that: described precast concrete beam (2) is placed with one group of beam stirrup (6) along its length.
5. prefabrication and assembly construction concrete frame beam-column connection according to claim 4 structure is characterized in that: the beam stirrup (6) that is positioned at U-shaped groove (3) position is arranged density greater than the beam stirrup (6) at other positions density of arranging.
6. prefabrication and assembly construction concrete frame beam-column connection structure according to claim 4, it is characterized in that: also comprise back plain bars (7), described back plain bars (7) is inserted in the beam stirrup (6).
7. prefabrication and assembly construction concrete frame beam-column connection according to claim 1 is constructed, and it is characterized in that: described precast concrete beam (2) places on the concrete cover of precast concrete column (1).
8. prefabrication and assembly construction concrete frame beam-column connection according to claim 1 is constructed, and it is characterized in that: described precast concrete column disposes the post vertical reinforcement in (1), and described precast concrete beam disposes the longitudinal beam muscle in (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189497 CN203200925U (en) | 2013-04-16 | 2013-04-16 | Prefabricated concrete framework beam column connected node structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189497 CN203200925U (en) | 2013-04-16 | 2013-04-16 | Prefabricated concrete framework beam column connected node structure |
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| CN203200925U true CN203200925U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320189497 Withdrawn - After Issue CN203200925U (en) | 2013-04-16 | 2013-04-16 | Prefabricated concrete framework beam column connected node structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195172A (en) * | 2013-04-16 | 2013-07-10 | 东南大学 | Beam-column joint structure of prefabricated concrete frame |
| CN103541433A (en) * | 2013-09-22 | 2014-01-29 | 沈阳建筑大学 | Fabricated concrete hooking type joint |
| CN103924683A (en) * | 2014-04-14 | 2014-07-16 | 北京工业大学 | Prestress connected concrete beam rectangular steel tube concrete column node |
| CN104294920A (en) * | 2014-10-30 | 2015-01-21 | 江苏中宝钢构有限公司 | Joint assembly of U-shaped steel reinforced concrete combined beam and special-shaped concrete-filled steel tube column and manufacturing method of joint assembly |
-
2013
- 2013-04-16 CN CN 201320189497 patent/CN203200925U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195172A (en) * | 2013-04-16 | 2013-07-10 | 东南大学 | Beam-column joint structure of prefabricated concrete frame |
| CN103541433A (en) * | 2013-09-22 | 2014-01-29 | 沈阳建筑大学 | Fabricated concrete hooking type joint |
| CN103541433B (en) * | 2013-09-22 | 2015-12-09 | 沈阳建筑大学 | Assembly concrete hook-hang type node |
| CN103924683A (en) * | 2014-04-14 | 2014-07-16 | 北京工业大学 | Prestress connected concrete beam rectangular steel tube concrete column node |
| CN104294920A (en) * | 2014-10-30 | 2015-01-21 | 江苏中宝钢构有限公司 | Joint assembly of U-shaped steel reinforced concrete combined beam and special-shaped concrete-filled steel tube column and manufacturing method of joint assembly |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130918 Effective date of abandoning: 20150909 |
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| RGAV | Abandon patent right to avoid regrant |