CN2200010Y - Prestressed reinforced concrete load-carrying floor - Google Patents
Prestressed reinforced concrete load-carrying floor Download PDFInfo
- Publication number
- CN2200010Y CN2200010Y CN 94205004 CN94205004U CN2200010Y CN 2200010 Y CN2200010 Y CN 2200010Y CN 94205004 CN94205004 CN 94205004 CN 94205004 U CN94205004 U CN 94205004U CN 2200010 Y CN2200010 Y CN 2200010Y
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- reinforced concrete
- concrete
- prestressed
- utility
- prestressed reinforced
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- Expired - Fee Related
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Abstract
The utility model relates to a prestressed reinforced concrete load-carrying floor, which is composed of an upper and a lower layers. The utility model belongs to the technical field of the concrete component, and can be used for architectonic floor board or roof board. The lower layer of the utility model is a preformed prestressed reinforced concrete slab whose cross section forms an inverted T shape with ribs, and the upper layer of the utility model is cast-in-site concrete or reinforced concrete. With two or more lower layers whose cross section forms an inverted T shape, the cohesive force between the upper and the lower layers can be enhanced, the integral performance of the load-carrying floor can be improved, and the thickness of the lower precast slab and the whole load-carrying floor can be reduced; with two or more ribs, the lower precast slab can not be broken easily during transportation, and the transportation and installation is easy.
Description
The utility model is a kind of floor plate that is used to build or roof panel, is a kind of novel prestressed reinforced concrete compound slab, belongs to the concrete component field.
To be (seeing " research of Sichuan building science " the 3rd phase of nineteen eighty-two P16 " prestressing force coincide continuous slab ") compound slab two-layerly be made of upper and lower the basic comprising that is used to the prestressed reinforced concrete compound slab built at present, lower floor is a prefabricated prestressed reinforced concrete flat board, thickness of slab 40～60mm, upper surface is uneven, the concavo-convex degree of depth is 2～3mm, as template, concrete that cast-in-place in the above 40mm is thick or steel concrete are as the upper strata with this plate.Difference according to prefabricated dull and stereotyped span, need add 2～3 supports in the bottom, the upper and lower two-layer common prestressed reinforced concrete compound slab of having formed, this plate is when bearing vertical load, upper and lower two-layer acting in conjunction, lower floor's prestressed reinforced concrete flat board bears tensile stress, upper strata cast-in-situ concrete coincide the layer bear compressive stress, the distortion of global sections meets the hypothesis of plane mechanism substantially.The span of this compound slab is in 7.2 meters.Because the upper and lower contact surface between two-layer of this compound slab is a plane, although surface irregularity is increasing the adhesion strength between two-layer, but still difficultly reach satisfied effect, it is a big weak link of prestressed reinforced concrete compound slab.Compound slab is when bearing load, and the shear stress of plate often makes the joint portion produce the crack, is difficult to guarantee upper and lower two-layer common co-ordination, is a big hidden danger to the safety of building structure.
Existing prestressed reinforced concrete compound slab, adhesion stress is poor between the not only upper and lower layer, and also since its slabbed construction, fracture easily in transportation.In order to solve the deficiency that above-mentioned prestressed reinforcement mixes native compound slab, ad hoc the utility model prestressed reinforced concrete compound slab of having counted.
The utility model is a kind of prestressed reinforced concrete compound slab, two-layerly is made of upper and lower.Lower floor is prefabricated prestressed concrete slabs with ribbing, and its cross section is two or several inverted T-shapeds, and the upper strata is cast-in-place concrete or the steel concrete layer that coincides.Owing to increased by two or several rib-shaped components at lower floor's upper surface, making prefabricated prestressed concrete slabs and cast-in-place concrete or the contact surface between the steel concrete is not a simple plane, increase contact area greatly, thereby guaranteed the fine combination between two-layer.The appearance and size of prefabricated prestressed concrete slabs is generally width between 400～1000mm, on establish two or several rib-shaped components; Height is between 80～130mm; Wherein plate part is thick is between 30～50mm, and the width of flank is between 40～80mm, and the rib depth to span ratio is 1/50-1/80.The span-depth radio of compound slab can reach 45.Because adopting the cross section is the substructure of inverted T-shaped, its mechanical property is improved greatly, in span during less than 7.2mm, make template with one or more prefabricated prestressed concrete slabs, middle need add one support, the concrete of cast-in-place required label promptly can be made into the good prestressed reinforced concrete compound slab of overall performance in the above.
Because lower floor of the present utility model pre-erection has rib-shaped component, do not need plate face connecting portion is done special the processing, after the cast-in-situ concrete, precast plate and in-situ layer can be combined closely, on the cross section of compound slab, bonding surface does not all connect on arbitrary level height, has improved the overall performance of compound slab greatly, improve the performance that compound slab bears shearing, improved the cracking resistance of compound slab.Use the utility model can reduce the gross thickness of plate, improves the utilization rate of architectural space.Since prefabricated inverted T-shaped prestressed concrete slabs from heavy and light, be convenient to transportation and install, use simple facility even manually all can install.
Accompanying drawing is the schematic diagram of prestressed reinforced concrete compound slab, wherein B is the width of lower floor's precast plate, h is the height of lower floor's precast plate, δ is the thick of plate part, b is the width of flank, H is the height of whole compound slab, and (1) is precast prestressed armored concrete slab, and (2) are cast-in-situ concrete or the steel concrete layer that coincides.
Most preferred embodiment of the present utility model is for making 6 meters large bay residence floorslabs, and the span of compound slab is 6.0 meters, and the height H of compound slab is 0.14m.The width B of precast prestressed armored concrete slab is 0.49 meter, and top has two riblets, and δ is that 0.036 meter, b are that 0.05 meter, h are 0.095 meter, is spaced apart 0.25 meter between the both sides of the chest, and the planar section of lower floor is 6 φ of configuration evenly
S5 high-strength indented wires, flank are respectively joined a φ
b4 cold-drawn low-carbon wires, whole lower floor employing strength grade is that the pea gravel concreten of C30 is cast, the lower floor that makes is emitted on the scene as bed die, the centre adds one support, the layer of concrete that integrated poured in the above then strength grade is C20 is the prestressed reinforced concrete compound slab with 6 meters large bay residence floorslabs that it is good that said method promptly can be made into overall performance.
Claims (2)
1, a kind of prestressed reinforced concrete compound slab, by lower floor-prefabricated prestressed concrete slabs [1] and upper strata-cast-in-situ concrete or reinforced concrete floor [2] formation, the invention is characterized on the described precast prestressed armored concrete slab to have rib-shaped component that the cross section is two or several inverted T-shapeds.
2, prestressed reinforced concrete compound slab as claimed in claim 1 is characterized in that the ratio of the high h of rib and span on the prefabricated prestressed concrete slabs (1) is 1/50-1/80.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205004 CN2200010Y (en) | 1994-03-31 | 1994-03-31 | Prestressed reinforced concrete load-carrying floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205004 CN2200010Y (en) | 1994-03-31 | 1994-03-31 | Prestressed reinforced concrete load-carrying floor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2200010Y true CN2200010Y (en) | 1995-06-07 |
Family
ID=33824059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94205004 Expired - Fee Related CN2200010Y (en) | 1994-03-31 | 1994-03-31 | Prestressed reinforced concrete load-carrying floor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2200010Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200930B (en) * | 2006-12-08 | 2010-12-15 | 邱则有 | Laminated slab |
| CN1975052B (en) * | 2006-09-28 | 2011-09-07 | 邱则有 | Laminated slab |
| CN104453230A (en) * | 2014-11-28 | 2015-03-25 | 李广浩 | Method for embedding prestress high-strength concrete prefabricated part |
-
1994
- 1994-03-31 CN CN 94205004 patent/CN2200010Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1975052B (en) * | 2006-09-28 | 2011-09-07 | 邱则有 | Laminated slab |
| CN101200930B (en) * | 2006-12-08 | 2010-12-15 | 邱则有 | Laminated slab |
| CN104453230A (en) * | 2014-11-28 | 2015-03-25 | 李广浩 | Method for embedding prestress high-strength concrete prefabricated part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| MM1K | Cease caused by non payment of annual fee |