CN202990197U - Lap joint rib type prestress double-direction composite slab - Google Patents
Lap joint rib type prestress double-direction composite slab Download PDFInfo
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- CN202990197U CN202990197U CN201220470906.6U CN201220470906U CN202990197U CN 202990197 U CN202990197 U CN 202990197U CN 201220470906 U CN201220470906 U CN 201220470906U CN 202990197 U CN202990197 U CN 202990197U
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- laminated slab
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Abstract
The utility model provides a lap joint rib type prestress double-direction composite slab which comprises at least three prefabricated prestress thin boards, a post pouring concrete layer and board gap lap joint reinforcing steel bars. The lap joint rib type prestress double-direction composite slab is characterized in that the prefabricated prestress thin boards are width boards with ribs or reinforcing steel trusses, the board gap lap joint reinforcing steel bars are in a continuous S shape, and a cross board gap is horizontally laid on the upper surface of the adjacent prefabricated thin boards and embedded into the post pouring concrete layer. Prestress steel wires are longitudinally embedded into the prefabricated prestress thin boards, the continuous-S-shaped reinforcing steel bars are transversely embedded, and two ends of each transverse reinforcing steel rib are bent upwards and exposed out of the upper surface of each truss by a certain length. The double-direction composite slab is small in thickness, light in self-weight, high in double-direction matched rib strength, not prone to be fissured, large in conveying radius, and beneficial for enlarging product service radius.
Description
Technical field
The utility model relates to the building structure floor, relates in particular to the two-way laminated floor slab of a kind of steel bar concrete prestressing force.
Background technology
Tradition large span superimposed sheet has non-prestressed and prestressing force two classes, precast plate in non-prestressed superimposed sheet adopts larger dull and stereotyped of thickness or with the flat board of steel bar girder, steel using amount is large, thickness is large, easy to crack, superimposed sheet can only design by one-way slabs, cost performance is relatively poor.And traditional prestressing force superimposed sheet also adopts the larger flat board of thickness usually, not only antiarch is difficult to control, and it is little because of stressed effective height to be layed on precast plate the transverse reinforcement perpendicular to the precast plate direction, be difficult to bear the moment of flexure of this direction, therefore also can only calculate by single load bearing, the disclosed a kind of prestressing force of CN200420068045.4 precast plate with ribbing, perforate is used for wearing reinforcing bar on rib, reduce simultaneously slab-thickness, can design by two-way slab.But precast plate is made trouble, cost of labor is high, and reinforcing bar wears with pipeline and buries difficulty underground, and rib is tall and big, and from great, and the horizontal arrangement of reinforcement of precast plate seldom, and plate easily longitudinally ftractures, and the plate width is generally less, has reduced plate fabrication and installation work efficiency.A kind of saving of labor who need not muscle of the embedding elongated horizontal end in rear pouring concrete but can bidirectional stress, save time, prestressing force bidirectional laminated slab that cost is low yet there are no report.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, provide a kind of from heavy and light, cost is low and the prestressing force bidirectional laminated slab of easy construction.
A kind of overlap joint muscle formula prestressing force bidirectional laminated slab that provides according to the utility model, comprise at least three precast prestressed thin plates, rear pouring concrete layer and plate seam overlap joint reinforcing bar, described precast prestressed thin plate is with ribbing or with the width plate of steel bar girder, described plate seam overlap joint reinforcing bar is continuous S shape, be layed in the upper surface of contiguous prefabricated thin plate across plate seam level, and be embedded in rear pouring concrete.
A kind of overlap joint muscle formula prestressing force bidirectional laminated slab that provides according to the utility model also has following attached technical characterictic:
Described precast prestressed thin plate vertically is embedded with compressor wire, laterally is embedded with the horizontal steel of continuous S-shaped
Muscle, transverse reinforcement two ends upwards bending expose concrete upper surface certain-length.
The compressor wire of described prestressed thin slab exposes plate end certain-length, and steel cord end anchors in rear pouring concrete.
Described plate seam overlap joint reinforcing bar is placed along the plate seam is symmetrical, and reinforcing bar bending end place upwards bends certain altitude.
Be equipped with preheating embedding line under the rib top of described precast plate or the winding up of steel bar girder.
Be layed in the precast plate width at middle part greater than the precast plate width that is layed in both sides.
Described rear pouring concrete layer top is embedding two-way steel mesh reinforcement.
There is being Liang Chu on described last layer concrete top perpendicular to the embedding non-prestressed high tensile steel wire that certain-length is arranged of beam level.
A kind of overlap joint muscle formula prestressing force bidirectional laminated slab that provides according to the utility model compared with prior art also has following advantage:
1, precast prestressed lamella thickness little, high from heavy and light and two way system intensity, be difficult for the crack, transportation radius is large, is conducive to enlarge the service of goods radius.
2, the lateral stressed reinforcing bar perpendicular to the precast plate direction of superimposed sheet, adopt special overlapping mode, saved elongated muscle, easy construction, and reinforcing bar is saved, and stress performance is good.
3, adopt large width plate, fabrication and installation efficient is high, and speed of application is fast.
4, adopt with steel bar girder or be with its longitudinal rigidity of precast plate of low rib larger, can satisfy the stressed needs in lifting, haulage stage, can avoid the plate cracking.
5, install again the method for independent prop after the lifting of construction stage employing precast plate under plate, not only easy construction, do not affect construction speed, and branched point is stressed evenly, can make precast plate substantially not bear moment of flexure in the construction stage, so superimposed sheet can bear moment of flexure by the full prestressing superposed member, thereby thickness of slab can be reduced greatly, can alleviate dead load, save reinforcing bar.
Description of drawings
Fig. 1 is arrangement of reinforcement plan view of the present utility model
Figure 2 ?A be one of sectional drawing of the present utility model
Figure 2 ?B be two of sectional drawing of the present utility model
Fig. 3 is steel bar girder thin plate stereogram of the present utility model
Fig. 4 is low rib prefabricated plate stereogram of the present utility model
Figure 5 ?A be one of precast plate sectional drawing of the present utility model
Figure 5 ?B be one of precast plate sectional drawing of the present utility model
Fig. 6 is the utility model prop construction sectional drawing
The specific embodiment
Referring to Fig. 1 to Fig. 6, at a kind of embodiment that overlaps muscle formula prestressing force bidirectional laminated slab that the utility model provides, comprise at least three precast prestressed thin plates 1, rear pouring concrete layer 2 and plate seam overlap joint reinforcing bar 3.Described precast prestressed thin plate 1 is for ribbing 11 or with the width plate of steel bar girder 12, described plate seam overlap joint reinforcing bar 3 is continuous S shape, is layed in the upper surface of contiguous prefabricated thin plate across plate seam level, and is embedded in rear pouring concrete.Described superimposed sheet is generally used for plate across larger floor, but precast plate transportation, hoisting process that length is larger require precast plate that certain Rigidity and strength must be arranged, adopt with ribbing 11 or can improve the Rigidity and strength of plate with the precast plate of steel bar girder 12, thereby alleviate the thickness of precast plate concrete.Adopt the precast plate of large width to be conducive to reduce plate seam overlap joint reinforcing bar, improve plate making, transportation and installation effectiveness, plate seam overlap joint reinforcing bar is as the main steel bar stress of superimposed sheet in plate seam certain limit, adopt continuous S shape, can effectively improve the Bar Anchorage performance, greatly improve the stress performance of transverse reinforcement 14 overlap joints in itself and precast plate.
Referring to Fig. 3, Fig. 4, figure 5 ?A, figure 5 ?B, in above-described embodiment that the utility model provides, precast prestressed thin plate 1 vertically is embedded with compressor wire 13, laterally is embedded with continuous S-shaped transverse reinforcement 14, and transverse reinforcement 14 2 ends upwards bending expose concrete upper surface certain-length.The compressor wire 13 of described prestressed thin slab 1 exposes plate end certain-length, and steel cord end anchors in rear pouring concrete 2.The utility model adopts prestressed thin slab 1 can reduce thickness of slab as the template of superimposed sheet and the part of force structure, control the crack, the S shape reinforcing bar of laterally burying underground both can be used as the muscle of the lateral stressed end of superimposed sheet, can prevent that again prefabricated plate 1 from ftractureing in the hoisting transportation process, the end bending part can improve the concrete shear strength of the old and new's concrete bonding surface, can stitch the main power transmission muscle of superimposed place bending resistance as plate again, lot of experiments proves that its transmission force property to the plate seam plays a crucial role.The steel wire 13 that expose the end of precast plate anchors in beam rear pouring concrete 2, improves the globality of floor.
Referring to Fig. 1, figure 2 ?A, figure 2 ?B, in above-described embodiment that the utility model provides, described plate seam overlap joint reinforcing bar 3 is placed along the plate seam is symmetrical, reinforcing bar bending end place upwards bends certain altitude.The upwards bending segment of plate seam overlap joint reinforcing bar 3 ends can make the anchoring property of reinforcing bar improve, thus can reduce with precast plate on the lap length of transverse reinforcement 14.
Referring to Fig. 1, figure 2 ?A, figure 2 ?B, in above-described embodiment that the utility model provides, be layed in the precast plate width at middle part greater than the precast plate width that is layed in both sides.Described rear pouring concrete layer 2 top are embedding two-way steel mesh reinforcement 21.For reducing as far as possible the plate seam, usually require plate wide large as far as possible, but for satisfying movement requirement, general plate is wide below 2.5m.Limit because of the panel size of floor, the less plate of width and large width plate assembled arrangement need to be arranged, to satisfy the panel dimensional requirement, because of mid span moment larger, therefore the plate that plate is roomy is put in the middle part usually, makes stressed less plate seam be positioned at both sides with this consumption that reduces plate seam reinforcing bar 3, saves reinforcing bar.
Referring to Fig. 1, in above-described embodiment that the utility model provides, there is being Liang Chu on described rear pouring concrete layer 2 top perpendicular to the embedding non-prestressed high tensile steel wire 22 that certain-length is arranged of beam level.Having the negative reinforcing bar of plate on the bearing of Liang Chu to adopt Hight strength cable, though when plate mid-span deflection supergage, the crack width on its bearing top can supergage, and intensity can be much higher than the floor that adopts plain bars, and the floor cost performance is improved greatly.
Job practices of the present utility model, changed the method for designing of traditional superimposed sheet secondary loading, can reduce thickness of slab, save reinforcing bar, though increased the operation that installs prop 5 under the plate, but special-purpose free-standing temporary steel tube column, from heavy and light, set up conveniently, cost is low, and do not affect the leading operation of floor slab construction, speed of application is not affected, and each intercolumniation is stressed relatively even, can avoid precast plate the crack to occur in the construction stage.
Claims (8)
1. one kind overlaps muscle formula prestressing force bidirectional laminated slab, comprise at least three precast prestressed thin plates, rear pouring concrete layer and plate seam overlap joint reinforcing bar, it is characterized in that described precast prestressed thin plate is with ribbing or with the width plate of steel bar girder, described plate seam overlap joint reinforcing bar is continuous S shape, be layed in the upper surface of contiguous prefabricated thin plate across plate seam level, and be embedded in rear pouring concrete.
2. overlap as claimed in claim 1 muscle formula prestressing force bidirectional laminated slab, it is characterized in that described precast prestressed thin plate vertically is embedded with compressor wire, laterally be embedded with the continuous S-shaped transverse reinforcement, transverse reinforcement two ends upwards bending expose concrete upper surface certain-length.
3. overlap as claimed in claim 1 muscle formula prestressing force bidirectional laminated slab, it is characterized in that the compressor wire of described prestressed thin slab exposes plate end certain-length, steel cord end anchors in rear pouring concrete.
4. overlap as claimed in claim 1 muscle formula prestressing force bidirectional laminated slab, it is characterized in that described plate seam overlap joint reinforcing bar places along the plate seam is symmetrical, reinforcing bar bending end place upwards bends certain altitude.
5. overlap as claimed in claim 1 muscle formula prestressing force bidirectional laminated slab, it is characterized in that being equipped with preheating embedding line under the winding up of the rib top of described precast plate or steel bar girder.
6. overlap as claimed in claim 1 muscle formula prestressing force bidirectional laminated slab, it is characterized in that being layed in the precast plate width at middle part greater than the precast plate width that is layed in both sides.
7. overlap as claimed in claim 1 muscle formula prestressing force bidirectional laminated slab, it is characterized in that described rear pouring concrete layer top is embedding has a two-way steel mesh reinforcement.
8. overlap as claimed in claim 1 muscle formula prestressing force bidirectional laminated slab, it is characterized in that there is being Liang Chu on described last layer concrete top perpendicular to the embedding non-prestressed high tensile steel wire that certain-length is arranged of beam level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220470906.6U CN202990197U (en) | 2012-09-17 | 2012-09-17 | Lap joint rib type prestress double-direction composite slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220470906.6U CN202990197U (en) | 2012-09-17 | 2012-09-17 | Lap joint rib type prestress double-direction composite slab |
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| Publication Number | Publication Date |
|---|---|
| CN202990197U true CN202990197U (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220470906.6U Expired - Lifetime CN202990197U (en) | 2012-09-17 | 2012-09-17 | Lap joint rib type prestress double-direction composite slab |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900191A (en) * | 2012-09-17 | 2013-01-30 | 杨众 | Lap joint bar type prestressed two-way laminated plate and construction method |
| CN107152107A (en) * | 2017-07-06 | 2017-09-12 | 中国矿业大学 | Precast concrete wall panel class component steel wire rope detours splicing construction and method |
| CN107237428A (en) * | 2017-07-06 | 2017-10-10 | 中国矿业大学 | Precast concrete wall panel class component steel wire hook connects splicing construction and method |
| CN107642163A (en) * | 2017-10-23 | 2018-01-30 | 重庆凌锋投资管理有限公司 | A kind of self-support type steel plate concrete integral type beam slab is whole to pour structure and its construction method |
| CN110014508A (en) * | 2019-03-26 | 2019-07-16 | 江苏盛世伟业新材料有限公司 | A kind of manufacturing and processing equipment and application method of prefabricated superimposed sheet |
| CN110258884A (en) * | 2019-06-12 | 2019-09-20 | 湖南固可得建筑科技有限公司 | A kind of fire prevention combination floor support plate |
-
2012
- 2012-09-17 CN CN201220470906.6U patent/CN202990197U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900191A (en) * | 2012-09-17 | 2013-01-30 | 杨众 | Lap joint bar type prestressed two-way laminated plate and construction method |
| CN107152107A (en) * | 2017-07-06 | 2017-09-12 | 中国矿业大学 | Precast concrete wall panel class component steel wire rope detours splicing construction and method |
| CN107237428A (en) * | 2017-07-06 | 2017-10-10 | 中国矿业大学 | Precast concrete wall panel class component steel wire hook connects splicing construction and method |
| CN107237428B (en) * | 2017-07-06 | 2019-05-14 | 中国矿业大学 | Precast concrete wall panel class component steel wire hook connects splicing construction and method |
| CN107642163A (en) * | 2017-10-23 | 2018-01-30 | 重庆凌锋投资管理有限公司 | A kind of self-support type steel plate concrete integral type beam slab is whole to pour structure and its construction method |
| CN110014508A (en) * | 2019-03-26 | 2019-07-16 | 江苏盛世伟业新材料有限公司 | A kind of manufacturing and processing equipment and application method of prefabricated superimposed sheet |
| CN110258884A (en) * | 2019-06-12 | 2019-09-20 | 湖南固可得建筑科技有限公司 | A kind of fire prevention combination floor support plate |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
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| CX01 | Expiry of patent term |