CN101487309A - Precast slab for cast-in-situ floor and its construction method - Google Patents
Precast slab for cast-in-situ floor and its construction method Download PDFInfo
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- CN101487309A CN101487309A CNA2009100607085A CN200910060708A CN101487309A CN 101487309 A CN101487309 A CN 101487309A CN A2009100607085 A CNA2009100607085 A CN A2009100607085A CN 200910060708 A CN200910060708 A CN 200910060708A CN 101487309 A CN101487309 A CN 101487309A
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Abstract
A precast slab used for a cast-in-place floor slab and a construction method of the cast-in-place floor slab belong to the field of constructions. The bottom on both sides of a precast slab body (1) is provided with a transverse lug boss (3), the upper surface of the transverse lug boss (3) is vertical or intersected with a precast side wall (2) by uptilting, or connected with an arc by transition, or connected with the upper part of the precast side wall (2) to form an incline. The transverse lug bosses (3) on each precast slab body (1) are split-jointed to form a groove (8), a slab joint reinforcing steel bar (9) is arranged in the groove (8), the precast slab plane is laid with a board surface net bar (10), a slab joint drawing bar (11) is connected between the board surface net bar (10) and the slab joint reinforcing steel bar (9), and then a concrete layer (12) is poured. The structure of the precast slab is simple, self weight is light, and the precast slab is applicable to the industrial production. The invention has the advantages of simple construction method, less concrete amount, short construction period, high efficiency, large floor slab bearing capacity, good crack resistance and earthquake resistance, thus being applicable to the high-rise building and other buildings.
Description
Technical field
The present invention relates to the preparation method of a kind of building precast plate and floor, be meant the job practices of a kind of cast-in-situ floor specifically with precast plate and cast-in-situ floor.Belong to building unit and job practices.
Background technology
It is a kind of simple, quick using the precast plate combination to build floor level, the form of construction work that the batch production degree is high.But can produce the slit inevitably between two precast plates, thus easy to crack, cause the flooring seepage.Chinese patent notification number CN912178337, on March 25 1992 day for announcing, utility model title " antiseep cement precast plate " has proposed to be provided with the inclined-plane boss on the sidewall of precast plate both sides, also leaves the technical scheme of small semicircle breach at the sidewall upper and lower end.During use, with the identical mutually connection of the inclined-plane boss between the precast plate, it is floating to pour into cement in the small semicircle breach between seam, to prevent the seepage on the plate face, even the swelling on the plate face is gone in the slit of small semicircle breach, also can remain in the end and make progress in the inclined-plane boss and be unlikely to flow to below the floor.But because precast plate is to be the simply supported beam stress on load bearing wall or beam, globality and anti-seismic performance are all relatively poor, are unsuitable for the high building of framed building, highrise building and shockproof requirements and use.So in existing architectural design and construction, many employings cast-in-place concrete structure complicated, loaded down with trivial details, that construction cost is higher replaces precast plate.
Chinese patent notification number CN200999409Y, on January 2 2008 day for announcing, utility model title " the cast-in-place sandwich hollow slab of a kind of prefabricated plate " has proposed to solidify the technical scheme that concrete hollow board is arranged on the prefabricated plate surface.Adopt precast plate and the cast-in-place mode of closing that hardens to make, removed shut die, the loaded down with trivial details work of form removal from, have the advantage of hollowcore slab, overcome that the precast plate seam crossing is easy to crack, the defective of seepage and poor seismic behavior.But the thickness of prefabricated plate can not be too big in this technical scheme, thereby load-bearing and flexural strength are lower, and when transportation or lifting, very easily rupture, and compare construction formwork, its deadweight is bigger again, also will build bracing frame in cast-in-place construction supports, the cast-in-place construction of prefabricated plate top hollowcore slab is more complicated also, need to lay the material and the reinforcing rib of hollow hole moulding, long construction period, big with the concrete amount, the floor deadweight is difficult to reduce, the difficult quality control of Cast-in-place concrete, construction cost is higher.
Summary of the invention
First purpose of the present invention is the deficiency that overcomes above-mentioned precast plate, provides a kind of simple in structure, easy to make, is convenient to a kind of cast-in-situ floor precast plate of the integrated poured structure of floor.
Second purpose of the present invention is the deficiency that overcomes above-mentioned cast-in-situ floor job practices, and a kind of job practices of cast-in-situ floor is provided.
For realizing first purpose, the technical solution used in the present invention is: a kind of cast-in-situ floor precast plate, comprise the precast plate main body, the precast plate sidewall bottom of described precast plate main body both sides is provided with horizontal boss, laterally the upper surface of boss is vertical with the precast plate sidewall or be inclined upwardly crossing or arc transition is connected, and perhaps the top with the precast plate sidewall connects into the inclined-plane.
The reinforcing rib of described precast plate bottom part body is the prestress steel strand cable.
Be evenly equipped with through hole on the width of described precast plate main body.
Described through hole is the waist circular port, and the waist circular port vertically is arranged on the short transverse of precast plate main body.
Described precast plate sidewall or laterally the upper surface of boss be provided with opening or the groove of horizontal arrangement down.
Described precast plate sidewall or laterally the upper surface of boss be provided with projection direction or protruding stupefied less than horizontal boss height of projection of horizontal arrangement and height of projection down.
The 1/6-1/2 that described protruding stupefied height of projection is horizontal boss height of projection.
For realizing second purpose, the technical solution used in the present invention is: a kind of cast-in-situ floor job practices of using above-mentioned precast plate may further comprise the steps:
A. the two ends of precast plate main body are shelved respectively to load bearing wall or beam, and the horizontal boss on each precast plate main body is spliced into opening groove up mutually;
B. placing plate seam reinforcing bar in groove, on upper berth, precast plate plane that each precast plate main body is spliced to form if tie up plate veil sheet muscle, and between plate veil sheet muscle and plate seam reinforcing bar uniform hook joint plate seam tension rib;
C. pour into a mould layer of concrete on the precast plate plane behind the installation plate veil sheet muscle, smash and shake, floating, maintenance is until being frozen into cast-in-situ floor.
Among the described step C, the thickness of layer of concrete is the 40-80 millimeter.
By technique scheme, the invention has the beneficial effects as follows:
1. in the design of the both sides of precast plate horizontal boss is arranged, after splice mutually the side of adjacent two precast plates, can form a groove, help the interlocking of concrete cast and cast-in-situ concrete layer and precast plate in splicing place.2. the upper surface of precast plate sidewall or horizontal boss is provided with groove or protruding stupefied, make between cast-in-situ concrete layer and the precast plate and form keyed scarf, changed the stress of precast plate, increase compactness and affixed power that the cast-in-situ concrete layer is connected with precast plate, improved the bulk strength of cast-in-situ floor and cracking resistance, anti-seismic performance.3. precast plate of the present invention is simple in structure, easy to make, the intensity height, and it is lighter to conduct oneself with dignity, and is suitable for suitability for industrialized production, can effectively reduce the engineering quantity of site operation.4. job practices of the present invention is easy, need not template and bracing frame, need not the field fabrication hollow hole, concrete amount is few, short construction period, the efficient height, the floor bearing capacity of making is big, cracking resistance, shock resistance are good, are suitable for using in the high various building operations of framed building, highrise building and shockproof requirements.
Description of drawings:
Fig. 1 is first kind of structural representation of precast plate of the present invention;
Fig. 2 is second kind of structural representation of precast plate of the present invention;
Fig. 3 is the third structural representation of precast plate of the present invention;
Fig. 4 is the 4th a kind of structural representation of precast plate of the present invention;
Fig. 5 is the 5th a kind of structural representation of precast plate of the present invention;
Fig. 6 is the construction schematic diagram of cast-in-situ floor of the present invention.
Among the figure: precast plate main body 1, precast plate sidewall 2, horizontal boss 3, reinforcing rib 4, through hole 5, groove 6, protruding stupefied 7, groove 8, plate seam reinforcing bar 9, plate veil sheet muscle 10, plate seam tension rib 11, layer of concrete 12.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
A kind of cast-in-situ floor precast plate of the present invention, comprise precast plate main body 1, precast plate sidewall 2 bottoms of described precast plate main body 1 both sides are provided with horizontal boss 3, laterally the upper surface of boss 3 and precast plate sidewall 2 are vertical or be inclined upwardly crossing or arc transition is connected, and perhaps the top with precast plate sidewall 2 connects into the inclined-plane.
Referring to Fig. 1, precast plate sidewall 2 is perpendicular with the upper and lower surface of precast plate main body 1, the structure of precast plate main body 1 and the difference of pre existing making sheet structure are, precast plate sidewall 2 bottoms are provided with horizontal boss 3, laterally the upper surface and the precast plate sidewall 2 of boss 3 intersect vertically, it is wide to form the bottom on the cross section of precast plate main body 1, the structure that top is narrow.In conjunction with Fig. 6, when two precast plate main bodys 1 side by side after, above two horizontal boss 3, will form an opening " U " type space up, it is groove 8, when pouring into a mould the layer of concrete 12 of precast plate face, concrete in the groove 8 is embedded between the splicing position of two precast plate main bodys 1, forms an integral body that firmly connects.
For improving bending resistance, the compressive property of precast plate main body 1, can make the reinforcing rib 4 of described precast plate main body 1 bottom be the prestress steel strand cable.
For alleviating the deadweight of precast plate main body 1, can on the width of described precast plate main body 1, be evenly equipped with through hole 5.And described through hole 5 can be oval shape hole, and the waist circular port vertically is arranged on the short transverse of precast plate main body 1.
Referring to Fig. 2, precast plate sidewall 2 is perpendicular with the upper and lower surface of precast plate main body 1, and the upper surface of horizontal boss 3 is arc transition with precast plate sidewall 2 and is connected.And the arc transition section is provided with the groove 6 of opening horizontal arrangement.In Fig. 2, groove 6 also can be arranged on the precast plate sidewall 2, and the opening of groove 6 also can be arranged down.Be described precast plate sidewall 2 or laterally the upper surface of boss 3 be provided with opening or the groove 6 of horizontal arrangement down.All the other are identical with embodiment 1.
Referring to Fig. 3, precast plate sidewall 2 is up-narrow and down-wide inclined-plane with the upper and lower surface of precast plate main body 1, and the upper surface court of horizontal boss 3 tilts and precast plate sidewall 2 intersects.The inclined-plane of precast plate sidewall 2 is provided with downward opening groove 6.Groove 6 be shaped as sloping platform shape, also can be other shape.When two precast plate main bodys 1 side by side after, above two horizontal boss 3, will form an opening " V " type space up, all the other are identical with embodiment 1.
Referring to Fig. 4, the top of the upper surface of described horizontal boss 3 and precast plate sidewall 2 directly connects into the inclined-plane.Be provided with downward opening groove 6 on this inclined-plane.All the other are identical with embodiment 3.
Referring to Fig. 5, present embodiment is the improvement to embodiment 1, promptly precast plate sidewall 2 be provided with projection direction down protruding stupefied 7, in order to guarantee the cast-in-situ concrete construction at horizontal boss 3 positions, protruding stupefied 7 height of projection should be less than the height of projection of horizontal boss 3, generally speaking, described protruding stupefied 7 the height of projection 1/6-1/2 that is horizontal boss 3 heights of projection.
In the foregoing description, groove 6 and protruding stupefied 7 be provided with and can increase the globality that precast plate main body 1 is connected with the cast-in-situ concrete layer improve the anti-seismic performance of cast-in-situ floor.
Referring to Fig. 6, a kind of cast-in-situ floor job practices may further comprise the steps:
A. the two ends of precast plate main body 1 of the present invention are shelved respectively to load bearing wall or beam, each precast plate main body 1 is discharged side by side, and the horizontal boss 3 on each precast plate main body 1 is spliced into opening groove 8 up mutually, is paved with whole flooring until each precast plate main body 1;
B. placing plate stitches reinforcing bar 9 in groove 8, plate seam reinforcing bar 9 can be one, also can be many, plate seam reinforcing bar 9 is placed along groove 8 directions, its length is identical with the length of precast plate main body 1, on upper berth, precast plate plane that each precast plate main body 1 is spliced to form if tie up plate veil sheet muscle 10, and between plate veil sheet muscle 10 and plate seam reinforcing bar 9 uniform hook joint plate seam tension rib 11, plate seam tension rib 11 stitches 9 vertical connections of reinforcing bar with plate veil sheet muscle 10 and plate;
C. cast layer of concrete 12 on the precast plate plane behind the installation plate veil sheet muscle 10 is smash and is shaken, and floating, maintenance is until being frozen into cast-in-situ floor.Among the described step C, the thickness of layer of concrete 12 is the 40-80 millimeter.Job practices of the present invention is easy, and concrete amount is few, short construction period, and the efficient height, the floor bearing capacity of making is big, and cracking resistance, shock resistance are good.
Claims (9)
1. cast-in-situ floor precast plate, comprise precast plate main body (1), it is characterized in that: precast plate sidewall (2) bottom of described precast plate main body (1) both sides is provided with horizontal boss (3), laterally the upper surface of boss (3) is vertical with precast plate sidewall (2) or be inclined upwardly crossing or arc transition is connected, and perhaps the top with precast plate sidewall (2) connects into the inclined-plane.
2. a kind of cast-in-situ floor precast plate according to claim 1 is characterized in that: the reinforcing rib (4) of described precast plate main body (1) bottom is the prestress steel strand cable.
3. a kind of cast-in-situ floor precast plate according to claim 1 is characterized in that: be evenly equipped with through hole (5) on the width of described precast plate main body (1).
4. a kind of cast-in-situ floor precast plate according to claim 3 is characterized in that: described through hole (5) is the waist circular port, and the waist circular port vertically is arranged on the short transverse of precast plate main body (1).
5. according to claim 1 or 2 or 3 or 4 described a kind of cast-in-situ floor precast plates, it is characterized in that: described precast plate sidewall (2) or laterally the upper surface of boss (3) be provided with opening or the groove of horizontal arrangement (6) down.
6. according to claim 1 or 2 or 3 or 4 described a kind of cast-in-situ floor precast plates, it is characterized in that: described precast plate sidewall (2) or laterally the upper surface of boss (3) be provided with projection direction down or horizontal arrangement and height of projection less than horizontal protruding stupefied (7) of boss (3) height of projection.
7. a kind of cast-in-situ floor precast plate according to claim 6 is characterized in that: the height of projection of described protruding stupefied (7) is the 1/6-1/2 of horizontal boss (3) height of projection.
8. cast-in-situ floor job practices of using each described precast plate among the claim 1-6 is characterized in that: may further comprise the steps:
A. the two ends of precast plate main body (1) are shelved respectively to load bearing wall or beam, and the horizontal boss (3) on each precast plate main body (1) is spliced into opening groove (8) up mutually;
B. placing plate seam reinforcing bar (9) in groove (8), if tie up plate veil sheet muscle (10), and uniform hook joint plate stitches tension rib (11) between plate veil sheet muscle (10) and plate seam reinforcing bar (9) on upper berth, precast plate plane that each precast plate main body (1) is spliced to form;
C. pour into a mould layer of concrete (12) on the precast plate plane behind the installation plate veil sheet muscle (10), smash and shake, floating, maintenance is until being frozen into cast-in-situ floor.
9. cast-in-situ floor job practices according to claim 8 is characterized in that: among the described step C, the thickness of layer of concrete (12) is the 40-80 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100607085A CN101487309A (en) | 2009-02-09 | 2009-02-09 | Precast slab for cast-in-situ floor and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100607085A CN101487309A (en) | 2009-02-09 | 2009-02-09 | Precast slab for cast-in-situ floor and its construction method |
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| Publication Number | Publication Date |
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| CN101487309A true CN101487309A (en) | 2009-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100607085A Pending CN101487309A (en) | 2009-02-09 | 2009-02-09 | Precast slab for cast-in-situ floor and its construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532998A (en) * | 2014-12-30 | 2015-04-22 | 王睿敏 | Superimposed floor easy to install and construction method thereof |
| CN106088454A (en) * | 2016-06-16 | 2016-11-09 | 湖南三快而居住宅工业有限公司 | Extrusion molding wear muscle precoated plate and preparation method thereof |
| CN107605084A (en) * | 2017-09-17 | 2018-01-19 | 湖南诚友绿色建材科技有限公司 | A kind of pre-stress concrete cored slab with ribbing |
| CN113982168A (en) * | 2021-11-29 | 2022-01-28 | 易建网科技有限公司 | Detachable superimposed floor slab made of UHPC |
-
2009
- 2009-02-09 CN CNA2009100607085A patent/CN101487309A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532998A (en) * | 2014-12-30 | 2015-04-22 | 王睿敏 | Superimposed floor easy to install and construction method thereof |
| CN106088454A (en) * | 2016-06-16 | 2016-11-09 | 湖南三快而居住宅工业有限公司 | Extrusion molding wear muscle precoated plate and preparation method thereof |
| CN107605084A (en) * | 2017-09-17 | 2018-01-19 | 湖南诚友绿色建材科技有限公司 | A kind of pre-stress concrete cored slab with ribbing |
| CN113982168A (en) * | 2021-11-29 | 2022-01-28 | 易建网科技有限公司 | Detachable superimposed floor slab made of UHPC |
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Open date: 20090722 |