CN202390978U - Self-centering prestressed concrete frame floor slab structure - Google Patents
Self-centering prestressed concrete frame floor slab structure Download PDFInfo
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- CN202390978U CN202390978U CN2011205373734U CN201120537373U CN202390978U CN 202390978 U CN202390978 U CN 202390978U CN 2011205373734 U CN2011205373734 U CN 2011205373734U CN 201120537373 U CN201120537373 U CN 201120537373U CN 202390978 U CN202390978 U CN 202390978U
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- girder
- secondary beam
- floor slab
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Abstract
The utility model discloses a self-centering prestressed concrete frame floor slab structure, which comprises N horizontally arranged spans; each span comprises four main beams, M secondary beams, four frame columns and a floor slab; the main beams are connected between adjacent two frame columns through pretressed steel stranded wires; the secondary beams are connected between relative two main beams; the floor slab is located above the main beams and the secondary beams; adjacent spans share same main beam and two frame columns; in one of the N spans, the secondary beams and the main beams which are connected with the secondary beams are respectively connected with the floor slab fixedly through a fastening device; the other two main beams are connected with the floor slab through a sliding device; in the rest spans, the main beams and the secondary beams are respectively connected with the floor slab through the sliding device. The concrete frame floor slab structure provided by the utility model can reduce the damage to the self-centering presstressed concrete frame caused by floor slab constraint effect under one-way earthquake effect.
Description
Technical field
The utility model relates to a kind of framed floor structure, specifically, relates to a kind of self-centering prestressed concrete frame floor slab structure.
Background technology
Traditional cast-in-situ concrete framed floor structure is that floor is carried out cast-in-place the connection with beam.Specifically, self-centering prestressed concrete frame comprises striding of N horizontal arrangement, and N is the integer greater than 1; Each strides four girders, the M root secondary beam that comprises rectangular layout; M is the integer greater than 1, four frame columns and floor, and girder is connected between two adjacent frame columns through prestress wire; Secondary beam is connected between two relative girders, and floor is positioned at the top of girder and secondary beam.A shared girder and two frame columns between adjacent the striding.For the self-centering concrete frame,, all adopt the mode of cast-in-place concrete to be fixedly connected then between floor and the girder, and between floor and the secondary beam if adopt the cast-in-place concrete floor structure.When the concrete frame floor slab structure of this fixed form under geological process, when girder separated with the frame column interface, floor can retrain the folding behavior at girder and frame column interface.If the restraint forces that cast-in-place concrete floor provides is stronger, tangible destruction is not taken place, then can produce very big restraint forces, and destroy the self-centering ability of self-centering prestressed concrete frame joint, thereby influence integrally-built anti-seismic performance framework.
Summary of the invention
Technical problem:The utility model technical problem to be solved is: a kind of self-centering prestressed concrete frame floor slab structure is provided; This concrete frame floor slab structure can be under unidirectional geological process; Reduce the damage that self-centering prestressed concrete frame causes because of the floor effect of restraint, thereby reduce the cost that repair the shake back.
Technical scheme:For solving the problems of the technologies described above, the self-centering prestressed concrete frame floor slab structure of the utility model, this concrete frame floor slab structure comprises striding of N horizontal arrangement; N is the integer greater than 1; Each is striden and comprises four girders, M root secondary beam, and M is the integer greater than 1, four frame columns and floor; Girder is connected between two adjacent frame columns through prestress wire; Girder and frame column are formed rectangular frame, and secondary beam is connected between two relative girders, and floor is positioned at the top of girder and secondary beam; An adjacent shared girder and two frame columns of striding; At a described N span centre of striding; Secondary beam; And two girders that are connected with secondary beam are fixedly connected with floor through fastener respectively, and all the other two girders pass through slide device and are connected with floor, and these two girders and floor can slide through slide device relatively; At each span centre of remainder, girder is connected with floor through slide device respectively with secondary beam, and girder and secondary beam can slide through slide device and floor respectively relatively.
Beneficial effect:Compared with prior art, the utlity model has following beneficial effect:
1.Under the uniaxially shock effect, reduce the damage that self-centering prestressed concrete frame causes because of the floor effect of restraint.In the technical scheme of the utility model, a plurality of span centres forming the concrete frame floor slab structure at any span centre, are fixedly connected secondary beam respectively with two girders with floor, and at remaining other span centres, secondary beam and girder can slide with floor respectively relatively.Self-centering prestressed concrete frame is under the uniaxially shock effect; When the contact surface of girder and frame column opens behavior; Floor is along with girder and secondary beam with its fixed connection are done horizontal movement; And step up generation at other and slide relatively, the concrete frame floor basically still is in elastic range.After the geological process, frame construction is returned to original vertical center (self-centering) under the effect of steel strand prestress, thereby reduces the permanent set of concrete frame floor slab structure under geological process greatly.Adopt the self-centering prestressed concrete frame floor slab structure of the utility model; After the uniaxially vibrations finish; Because the distortion of girder, secondary beam and frame column can be controlled in the elastic range,, thereby reduce the cost that repair the shake back so the concrete frame floor slab structure is harmless.
2. structural cost is low.Member in the utility model can be prefabricated in the factory, and assembled on site helps accelerating construction progress, ensures the quality of products and reduces cost of labor then.
Description of drawings
Fig. 1 is the extensional deformation figure of the utility model.
Fig. 2 is the floor map of the utility model.
Fig. 3 is the A-A section of Fig. 2.
Fig. 4 is the B-B section of Fig. 2.
Fig. 5 is the C-C section of Fig. 2.
Fig. 6 is the D-D section of Fig. 2.
Have among the figure: 1. stride, 2. girder, 3. secondary beam, 4. frame column, 5. floor; 6. fastener, 7. slide device, 8. shearing resistance pin, 9. the cement mortar screeding layer is 10. gone up sliding plate; 11. down-shift board.
The specific embodiment
Below in conjunction with the technical scheme further explain of accompanying drawing to the utility model.
Shown in Fig. 1 to 6, what a kind of self-centering prestressed concrete frame floor slab structure of the utility model, this concrete frame floor slab structure comprised N horizontal arrangement strides 1, and N is the integer greater than 1, and for example N can be 2,3 or 4.In Fig. 2, N is 2.Each is striden 1 and comprises four girders 2, M root secondary beam 3, and M is the integer greater than 1, four frame columns 4 and floor 5.Girder 2 is connected between two adjacent frame columns 4 through prestress wire, and girder 2 is formed rectangular frame with frame column 4.Secondary beam 3 is connected between two relative girders 2.Floor 5 is positioned at the top of girder 2 and secondary beam 3.Stride in 1 at one, the quantity of secondary beam 3 is decided according to actual demands of engineering.In Fig. 2, adopt two secondary beams 3.Stride with stride between be connected the form that adopts sharing structure.As shown in Figure 2, adjacent 1 a shared girder 2 and two frame columns 4 of striding.Stride a span centre of 1 at N, secondary beam 3, and two girders 2 that are connected with secondary beam 3 are fixedly connected with floor 5 through fastener 6 respectively; All the other two girders 2 are connected with floor 5 through slide device 7, and these two girders 2 can slide through slide device 7 with floor 5 relatively.At each span centre of remainder, girder 2 is connected with floor 5 through slide device 7 respectively with secondary beam 3, and girder 2 can slide through slide device 7 and floor 5 respectively with secondary beam 3 relatively.
During installation, in place with prefabricate reinforced concrete frame girder 2, secondary beam 3 and frame column 4 through on-site hoisting, prestress wire is passed the duct of reserving in girder 2 and the frame column 4, carry out the prestressed stretch-draw of main beam in frame 2.Afterwards, prefabricate reinforced concrete floor 5 is fixedly connected on the secondary beam of striding and two girders of prestressed frame with shearing resistance pin 8.For guaranteeing that the self-centering framework does not receive the constraint of floor 5, on other girders of striding of self-centering framework and secondary beam, horizontal sliding device 7 is set.The self-centering prestressed concrete frame floor slab structure is a kind of novel structural system; Main beam in frame 2 combines through horizontally disposed prestress wire and frame column 4, and shearing is born by frictional force or dissipative cell on the contact surface between girder 2 and the frame column 4.When the earthquake effect increased to a certain degree, the contact surface of girder 2 and frame column 4 will open.Along with opening of the contact surface of girder 2 and frame column 4, power consumption member rates such as the angle steel of girder 2 end faces, friction member are introduced into plastic state and consume energy realizing.Simultaneously, the longitudinal reinforcement in the floor 5 can be used as the hogging moment usefulness at opposing girder 2 two ends.Floor 5 is along with the girder 2 with the prestressed frame of its fixed connection is done horizontal movement with secondary beam 3, and steps up to produce relatively at other and slide, and the concrete frame floor basically still is in elastic range.After the geological process; The secondary beam 3 and the girder 2 that are fixedly connected with floor 5 are returned to original vertical center (self-centering) under the effect of steel strand prestress; Thereby eliminate the permanent set of concrete frame floor slab structure under geological process; And the distortion of the main element of the concrete frame floor slab structure of being made up of girder 2, secondary beam 3 and frame column 4 can be controlled in the elastic range, and promptly the concrete frame floor slab structure is harmless.
The technical scheme that the utility model adopts has overcome 5 pairs of Frame's Constrain effect problem of floor in the self-centering prestressed concrete frame floor slab structure; Reduce (or avoiding) because of 5 pairs of self-centering prestressed concrete frame joints of floor; Promptly to the constraint of the node between girder 2 and the frame column 4 and weaken auto-reset function after the shake of self-centering concrete frame; Eliminate or reduced the permanent set of structure effectively, reduced the cost that repair the shake back.
Described fastener 6 can have multiple structure.Like Fig. 3 and shown in Figure 5, the fastener 6 that the utility model adopts comprises shearing resistance pin 8 and cement mortar screeding layer 9.Cement mortar screeding layer 9 is fixedly connected between secondary beam 3 and the floor 5, perhaps is fixedly connected between girder 2 and the floor 5.Shearing resistance pin 8 passes cement mortar screeding layer 9, and the two ends of shearing resistance pin 8 lay respectively in girder 2 and the floor 5, and perhaps the two ends of shearing resistance pin 8 lay respectively in secondary beam 3 and the floor 5.Like this, the girder 2 that adopts fastener 6 to connect can move with floor 5 together; The secondary beam 3 that adopts fastener 6 to connect can move with floor 5 together.
Described slide device 7 can have multiple structure.Like Fig. 4 and shown in Figure 6, the slide device 7 that the utility model adopts comprises sliding plate 10 and down-shift board 11.Last sliding plate 10 is fixedly connected on the bottom surface of floor 5, and down-shift board 11 is fixedly connected on the end face of girder 2 or secondary beam 3, and the area of down-shift board 11 is less than the area of last sliding plate 10, and last sliding plate 10 covers whole down-shift board 11.Like this, last sliding plate 10 is fixedly connected with floor 5, and girder 2 or secondary beam 3 are fixedly connected with down-shift board 11.When generation between floor 5 and girder 2 or the secondary beam 3 relatively moves, will produce relative slip between last sliding plate 10 and the down-shift board 11.The area of down-shift board 11 can guarantee that less than the area of last sliding plate 10 down-shift board 11 and last sliding plate 10 can produce relative slippage freely.The described thickness sum that goes up sliding plate 10 and down-shift board 11 equals the thickness of cement mortar screeding layer 9.Can guarantee that so the interior floor 5 of whole frame plane is at sustained height.
Slide owing to can produce relatively between last sliding plate 10 and the down-shift board 11, so for reducing friction effect, down-shift board 11 adopts polytetrafluoroethylmaterial material to process respectively with last sliding plate 10.Like this, down-shift board 11 more is easy to generate relative slip with last sliding plate 10.
Claims (5)
1. self-centering prestressed concrete frame floor slab structure; This concrete frame floor slab structure comprises stride (1) of N horizontal arrangement, and N is the integer greater than 1, and each is striden (1) and comprises four girders (2), M root secondary beam (3); M is the integer greater than 1; Four frame columns (4) and floor (5), girder (2) is connected between adjacent two frame columns (4) through prestress wire, and girder (2) and frame column (4) are formed rectangular frame; Secondary beam (3) is connected between relative two girders (2), and floor (5) is positioned at the top of girder (2) and secondary beam (3); Adjacent (a 1) shared girder (2) and two frame columns (4) of striding; It is characterized in that; At a described N span centre of striding (1), secondary beam (3), and two girders (2) that are connected with secondary beam (3) are fixedly connected with floor (5) through fastener (6) respectively; All the other two girders (2) are connected with floor (5) through slide device (7), and these two girders (2) and floor (5) can slide through slide device (7) relatively; At each span centre of remainder, girder (2) is connected with floor (5) through slide device (7) respectively with secondary beam (3), and girder (2) and secondary beam (3) can slide through slide device (7) and floor (5) respectively relatively.
2. according to the described self-centering prestressed concrete frame floor slab structure of claim 1; It is characterized in that; Described fastener (6) comprises shearing resistance pin (8) and cement mortar screeding layer (9); Cement mortar screeding layer (9) is fixedly connected between secondary beam (3) and the floor (5), perhaps is fixedly connected between girder (2) and the floor (5); Shearing resistance pin (8) passes cement mortar screeding layer (9), and the two ends of shearing resistance pin (8) lay respectively in girder (2) and the floor (5), and perhaps the two ends of shearing resistance pin (8) lay respectively in secondary beam (3) and the floor (5).
3. according to claim 1 or 2 described self-centering prestressed concrete frame floor slab structures; It is characterized in that; Described slide device (7) comprises sliding plate (10) and down-shift board (11), and last sliding plate (10) is fixedly connected on the bottom surface of floor (5), and down-shift board (11) is fixedly connected on the end face of girder (2) or secondary beam (3); And the area of down-shift board (11) is less than the area of last sliding plate (10), and last sliding plate (10) covers whole down-shift board (11).
4. according to the described self-centering prestressed concrete frame floor slab structure of claim 3, it is characterized in that the described thickness sum that goes up sliding plate (10) and down-shift board (11) equals the thickness of cement mortar screeding layer (9).
5. according to the described self-centering prestressed concrete frame floor slab structure of claim 3, it is characterized in that described down-shift board (11) and last sliding plate (10) adopt polytetrafluoroethylmaterial material to process respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205373734U CN202390978U (en) | 2011-12-21 | 2011-12-21 | Self-centering prestressed concrete frame floor slab structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205373734U CN202390978U (en) | 2011-12-21 | 2011-12-21 | Self-centering prestressed concrete frame floor slab structure |
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| Publication Number | Publication Date |
|---|---|
| CN202390978U true CN202390978U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205373734U Withdrawn - After Issue CN202390978U (en) | 2011-12-21 | 2011-12-21 | Self-centering prestressed concrete frame floor slab structure |
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| Country | Link |
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| CN (1) | CN202390978U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425257A (en) * | 2011-12-21 | 2012-04-25 | 东南大学 | Self-centering pre-stressed concrete framework floor slab structure |
| CN104563524A (en) * | 2014-12-02 | 2015-04-29 | 中南大学 | Anti-water-seepage prefabricated slab construction method |
| CN112681766A (en) * | 2020-12-15 | 2021-04-20 | 安徽晶宫绿建集团有限公司 | Construction device and method for water seepage prevention prefabricated slab |
-
2011
- 2011-12-21 CN CN2011205373734U patent/CN202390978U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425257A (en) * | 2011-12-21 | 2012-04-25 | 东南大学 | Self-centering pre-stressed concrete framework floor slab structure |
| CN102425257B (en) * | 2011-12-21 | 2013-07-31 | 东南大学 | Self-centering pre-stressed concrete framework floor slab structure |
| CN104563524A (en) * | 2014-12-02 | 2015-04-29 | 中南大学 | Anti-water-seepage prefabricated slab construction method |
| CN112681766A (en) * | 2020-12-15 | 2021-04-20 | 安徽晶宫绿建集团有限公司 | Construction device and method for water seepage prevention prefabricated slab |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120822 Effective date of abandoning: 20130731 |
|
| RGAV | Abandon patent right to avoid regrant |