CN1644834A - Construction of steel bar reinforced hollow concrete floor cast-in-situs - Google Patents

Construction of steel bar reinforced hollow concrete floor cast-in-situs Download PDF

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Publication number
CN1644834A
CN1644834A CN 200510020286 CN200510020286A CN1644834A CN 1644834 A CN1644834 A CN 1644834A CN 200510020286 CN200510020286 CN 200510020286 CN 200510020286 A CN200510020286 A CN 200510020286A CN 1644834 A CN1644834 A CN 1644834A
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China
Prior art keywords
bar
floor
capsule
moulding core
steel
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CN 200510020286
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Chinese (zh)
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CN1318711C (en
Inventor
刘国模
邸江枫
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Guangsha Chongqing first construction (Group) Co., Ltd.
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刘国模
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Abstract

A construction method for in-situ casting hollow reinforced concrete floor slab features use of the inflatable and air releasing flexible core moulds, and includes such steps as binding reinforcing bars, arranging said flexible core moulds in the reinforcing cage at intervals, inflating them, pouring concrete but preserving a slot, releasing air from said moulds, taking them from the internal cavity via said slot, and pouring concrete in the slot.

Description

The making job practices of cast-in-situ reinforced concrete hollow floor
Technical field
The invention belongs to the realm of building construction, be specifically related to a kind of making job practices of cast-in-situ reinforced concrete hollow floor.
Technical background
In building trade, the reinforced concrete floor plate has two kinds of form of structure, and a kind of is the prestressed reinforced concrete cassette ceiling, and another kind is the cast-in-situ steel reinforced concrete solid floor.It is assembled by the some prestressed reinforced concrete cassette ceilings of making in advance adopting the flooring of prestressed reinforced concrete cassette ceiling, the heat insulating ability of this kind structure floor, thermal insulation, sound insulation and moisture resistance are better, and saving concrete material, but its globality, shock resistance and antiseep are poor, ftracture easily between plate and the plate.The cast-in-situ steel reinforced concrete solid floor that generally adopts is to lay floor bar is installed between Liang Yuliang now, carry out concreting again, make flooring form a whole reinforced concrete slab, because this kind floor is to build at the scene, can not adopt as the mode of prestressed reinforced concrete cassette ceiling and loose core, so this kind floor is solid plate body, its globality, shock resistance and antiseep are good, but owing to be solid plate body, its heat insulating ability, thermal insulation, sound insulation and moisture resistance are relatively poor, and expend Reinforced Concrete Materials, from great and uneconomical.
Summary of the invention
The making job practices that the purpose of this invention is to provide a kind of cast-in-situ reinforced concrete hollow floor is to make the cast-in-situ reinforced concrete hollow floor.
The making job practices of cast-in-situ reinforced concrete hollow floor of the present invention is: lay floor bar is installed, wherein parallel with the long limit of floor reinforcing bar is a distributing bar, the reinforcing bar parallel with the floor minor face is steel bar stress, with the moulding core along distributing bar direction equidistant placement in floor bar and parallel with steel bar stress; This moulding core is tubular capsule after by inflation, is sleeved on the outer cylinder-shaped coat of capsule by what cloth or plastic sheeting were made, and the strip steel disc composition that is axially fixed in the overcoat inner surface along overcoat, the capsule closed at both ends, a blind end setting therein has the valve of one way valve; Build carrying out floorslab concrete after the inflation of the capsule in the moulding core, and in floor bar and beam steel binding site reservation ater-casting, after the discharge of the gas in the moulding core capsule, the moulding core is extracted out through the ater-casting from steel concrete, after the concrete initial set expiration, finished building of ater-casting.
The making construction of cast-in-situ reinforced concrete hollow floor of the present invention can also be carried out by the following method: lay floor bar is installed, wherein parallel with the long limit of floor reinforcing bar is a distributing bar, the reinforcing bar parallel with the floor minor face is steel bar stress, with the moulding core along distributing bar direction equidistant placement in floor bar and parallel with steel bar stress; This moulding core is by pvc pipe and be tubular capsule after being positioned at wherein inflation and form, the capsule closed at both ends, and a blind end setting therein has the valve of one way valve; Build carrying out floorslab concrete after the inflation of the capsule in the moulding core, and in floor bar and beam steel binding site reservation ater-casting, after the discharge of the gas in the moulding core capsule, capsule is extracted out through the ater-casting in pvc pipe, finish building of ater-casting in the phase at concrete initial set.
The moulding core that the present invention adopts in a kind of method before above-mentioned is made up of capsule, overcoat and the strip steel disc that is fixed on the overcoat inner surface, when capsule is full of gas, the capsule of bulging will support overcoat makes the moulding core form the cylinder bodily form, and the strip steel disc that is fixed on the overcoat inner surface will make this one-tenth core mold be equipped with certain rigidity, pressure when enabling to bear concreting is realized building of floorslab concrete; And after the gas in the capsule is discharged, because capsule and overcoat are made by the flexibility material, and the strip steel disc also has certain pliability, can carry out largely curved around, so floor build finish after, this moulding core can be easily extracted out through the ater-casting in steel concrete, thereby realizes building and loosing core of in-situ reinforced concrete slab, and the moulding core can use repeatedly.
The moulding core that the present invention adopts in a kind of method in above-mentioned back is made up of pvc pipe and capsule, builds at steel concrete and finishes the back and only capsule extraction in the steel concrete also can be used repeatedly, and pvc pipe then forever is retained in the steel concrete.Because pvc pipe self has certain rigidity, and when capsule is full of gas, the capsule of bulging will play a supportive role to pvc pipe, pressure when enabling to bear concreting, realize building of floorslab concrete, and just because of the supporting role of capsule is arranged, make this pvc pipe can adopt thin wall type tubing, thereby reduce the cost of pvc pipe; After the gas in the capsule is discharged, because capsule is made by the flexibility material, can in steel concrete, extract out easily, thereby realize building and loosing core of in-situ reinforced concrete slab through the ater-casting.
The cast-in-situ reinforced concrete hollow floor that adopts the method for the invention to make possesses the advantage of prestressed reinforced concrete cassette ceiling and cast-in-situ steel reinforced concrete solid floor simultaneously, its globality, shock resistance, antiseep, heat insulating ability, thermal insulation, sound insulation and moisture resistance are all better, its hollow rate can reach 28.5%~39.6%, can save a large amount of Reinforced Concrete Materials, from heavy and light; The cast-in-situ reinforced concrete hollow floor that adopts above-mentioned preceding a kind of method to make is cost-saved more than 18%, and is though the cast-in-situ reinforced concrete hollow floor that adopts a kind of method in above-mentioned back to make has used Thin-Wall PVC tubing, also cost-saved more than 6%.
Description of drawings
Now in conjunction with the accompanying drawings the present invention is described in further detail.
Fig. 1 makes the schematic diagram of cast-in-situ reinforced concrete hollow floor for adopting the method for the invention;
Fig. 2 is the sectional view of A-A line among Fig. 1;
Fig. 3 is the cross-sectional view of the above-mentioned preceding employed moulding core of a kind of method (the moulding core is made up of capsule, overcoat and strip steel disc) after the capsule inflation;
Fig. 4 is the cross-sectional view of the above-mentioned back employed moulding core of a kind of method (the moulding core is made up of pvc pipe and capsule) after the capsule inflation.
The specific embodiment
Embodiment one:
As shown in Figure 1 and Figure 2, the making job practices of this cast-in-situ reinforced concrete hollow floor is:
1, lay lower floor's reinforcing bar that floor bar is installed, wherein parallel with the long limit of floor reinforcing bar is a distributing bar (non-stress reinforcing bar) 1, the reinforcing bar parallel with the floor minor face is steel bar stress 2, many locating rings 4 are equidistantly placed (locating ring quantity is decided according to steel bar stress length) along steel bar stress 2, form a location circular row, and along the such location circular row (the locating ring number of columns is decided according to distributing bar length) of distributing bar 1 equidistant placement multiple row, moulding core 3 is through respectively locatees in the circular row, re-lay the top reinforcement that floor bar is installed, and each locating ring 4 colligation is fixed on the distributing bar 1 of top reinforcement, be located at, between lower floor's reinforcing bar with last, lower floor's reinforcing bar is vertical.As shown in Figure 3, described moulding core 3 is tubular capsule 7 after by inflation, is sleeved on the outer cylinder-shaped coat 5 of capsule 7 by what cloth or plastic sheeting were made, and four strip steel discs, 6 compositions that are axially fixed in overcoat 5 inner surfaces along overcoat 5, article four, strip steel disc 6 is distributed on overcoat 5 inner surfaces, capsule 7 closed at both ends, a blind end setting therein has the valve of one way valve, can inflate to capsule 7 by this valve, and the gases in the capsule 7 can be given off.With the capsule in the moulding core 37 inflation, capsule 7 is propped up overcoat 5 makes moulding core 3 be cylinder, then this moulding core 3 along distributing bar 1 direction equidistant placement in floor bar and parallel with steel bar stress 2;
2, carry out floorslab concrete and build, and reserve ater-casting L, temporarily concreting not at floor bar and beam steel binding site;
3, the gas in the moulding core capsule 7 is discharged, and moulding core 3 is extracted out through ater-casting L from steel concrete;
4, after the concrete initial set expiration, finish building of ater-casting L.
Embodiment two:
As shown in Figure 1 and Figure 2, the making job practices of this cast-in-situ reinforced concrete hollow floor is:
1, lay lower floor's reinforcing bar that floor bar is installed, wherein parallel with the long limit of floor reinforcing bar is a distributing bar (non-stress reinforcing bar) 1, the reinforcing bar parallel with the floor minor face is steel bar stress 2, many locating rings 4 are equidistantly placed (locating ring quantity is decided according to steel bar stress length) along steel bar stress 2, form a location circular row, and along the such location circular row (the locating ring number of columns is decided according to distributing bar length) of distributing bar 1 equidistant placement multiple row, moulding core 3 is through respectively locatees in the circular row, re-lay the top reinforcement that floor bar is installed, and each locating ring 4 colligation is fixed on the distributing bar 1 of top reinforcement, be located at, between lower floor's reinforcing bar with last, lower floor's reinforcing bar is vertical.As shown in Figure 4, described moulding core 3 is by pvc pipe 8 and be tubular capsule 7 after being positioned at wherein inflation and form, capsule 7 closed at both ends, and a blind end setting therein has the valve of one way valve, can inflate to capsule 7 by this valve, and the gases in the capsule 7 can be given off.With the capsule in the moulding core 37 inflation, make capsule 7 supports be pressed in pvc pipe 8 inner surfaces, then this moulding core 3 along distributing bar 1 direction equidistant placement in floor bar and parallel with steel bar stress 2;
2, carry out floorslab concrete and build, and reserve ater-casting L, temporarily concreting not at floor bar and beam steel binding site;
3, the gas in the moulding core capsule 7 is discharged, and capsule 7 is extracted out through ater-casting L in pvc pipe 5;
4, finish building of ater-casting L in the phase at concrete initial set.

Claims (2)

1, the making job practices of cast-in-situ reinforced concrete hollow floor, it is characterized in that: lay floor bar is installed, wherein parallel with the long limit of floor reinforcing bar is distributing bar (1), the reinforcing bar parallel with the floor minor face is steel bar stress (2), with moulding core (3) along distributing bar direction equidistant placement in floor bar and parallel with steel bar stress; This moulding core is tubular capsule (7) after by inflation, is sleeved on the outer cylinder-shaped coat (5) of capsule by what cloth or plastic sheeting were made, and strip steel disc (6) composition that is axially fixed in the overcoat inner surface along overcoat, the capsule closed at both ends, a blind end setting therein has the valve of one way valve; Build carrying out floorslab concrete after the inflation of the capsule in the moulding core, and in floor bar and beam steel binding site reservation ater-casting (L), after the discharge of the gas in the moulding core capsule, the moulding core is extracted out through the ater-casting from steel concrete, after the concrete initial set expiration, finished building of ater-casting.
2, the making job practices of cast-in-situ reinforced concrete hollow floor, it is characterized in that: lay floor bar is installed, wherein parallel with the long limit of floor reinforcing bar is distributing bar (1), the reinforcing bar parallel with the floor minor face is steel bar stress (2), with moulding core (3) along distributing bar direction equidistant placement in floor bar and parallel with steel bar stress; This moulding core is by pvc pipe (8) and be tubular capsule (7) after being positioned at wherein inflation and form, the capsule closed at both ends, and a blind end setting therein has the valve of one way valve; Build carrying out floorslab concrete after the inflation of the capsule in the moulding core, and in floor bar and beam steel binding site reservation ater-casting (L), after the discharge of the gas in the moulding core capsule, capsule is extracted out through the ater-casting in pvc pipe, finish building of ater-casting in the phase at concrete initial set.
CNB2005100202860A 2005-01-28 2005-01-28 Construction of steel bar reinforced hollow concrete floor cast-in-situs Active CN1318711C (en)

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CN1318711C CN1318711C (en) 2007-05-30

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100363584C (en) * 2005-09-14 2008-01-23 傅礼铭 Soft form and construction method for cast-in-situ concrete cavity floor utilizing soft form
CN101793070A (en) * 2010-03-22 2010-08-04 徐焱 Hollow floor system filled with an air-filling bag and construction method thereof
CN102304952A (en) * 2011-07-07 2012-01-04 孙广亮 Inner partition board formed by cast-in-situ and manufacture method thereof
CN105256947A (en) * 2015-09-24 2016-01-20 广州建筑股份有限公司 Method for constructing recycled mixed concrete beams and slabs
CN105696790A (en) * 2016-03-01 2016-06-22 中国建筑第二工程局有限公司 Double-layer coupling beam hole opening formwork system and construction method of double-layer coupling beam hole opening formwork system applied to double-layer coupling beam
CN105908887A (en) * 2016-06-24 2016-08-31 重庆道同建材有限公司 Airbag core mold component cast hollow floor construction method
CN105908886A (en) * 2016-06-24 2016-08-31 重庆道同建材有限公司 Airbag core mold component
CN107313541A (en) * 2017-08-23 2017-11-03 广东班高得绿色建工科技有限公司 A kind of making of prefabricated assembled sandwich hollow slab and construction method
CN107379226A (en) * 2017-08-23 2017-11-24 广东班高得绿色建工科技有限公司 A kind of preparation method of multifunctional fabricated precast hollow building block
CN107471427A (en) * 2017-08-23 2017-12-15 广东班高得绿色建工科技有限公司 A kind of construction method of prefabricated assembled cassette ceiling
CN110630019A (en) * 2019-09-16 2019-12-31 中铁广州工程局集团深圳工程有限公司 Core mold for pouring subway rail top air duct and construction method
CN111749395A (en) * 2020-06-22 2020-10-09 吉林建筑大学 Hollow partition plate and vertical connection method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1022194C (en) * 1988-08-29 1993-09-22 和景义 Superposed hollow building roof and construction method thereof
CN1116486C (en) * 2000-07-18 2003-07-30 长沙巨星轻质建材有限公司 In-situ deposited porous reinforced concrete roof and its construction process
JP3673162B2 (en) * 2000-11-06 2005-07-20 株式会社栗本鐵工所 Embedded hollow form fixing structure for hollow concrete floor board
CN1152182C (en) * 2001-10-09 2004-06-02 邱则有 Hollow pipe member for in-situ deposited steel bar reinforced concrete combined structure
CN2536676Y (en) * 2001-12-10 2003-02-19 邱则有 Steel bar reinforced hollow blocks
CN2617841Y (en) * 2002-04-19 2004-05-26 王亮 Cast-in-situs environmental protective hollow wall body structure
CN1521376A (en) * 2003-01-30 2004-08-18 吴学文 Hollow slab beam and filling construction method therefor
CN1445422A (en) * 2003-03-11 2003-10-01 綦玉良 Gas-filled type tube mold for cast-in-situ concrete hollow floor

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100363584C (en) * 2005-09-14 2008-01-23 傅礼铭 Soft form and construction method for cast-in-situ concrete cavity floor utilizing soft form
CN101793070A (en) * 2010-03-22 2010-08-04 徐焱 Hollow floor system filled with an air-filling bag and construction method thereof
CN102304952A (en) * 2011-07-07 2012-01-04 孙广亮 Inner partition board formed by cast-in-situ and manufacture method thereof
CN105256947A (en) * 2015-09-24 2016-01-20 广州建筑股份有限公司 Method for constructing recycled mixed concrete beams and slabs
CN105696790A (en) * 2016-03-01 2016-06-22 中国建筑第二工程局有限公司 Double-layer coupling beam hole opening formwork system and construction method of double-layer coupling beam hole opening formwork system applied to double-layer coupling beam
CN105908887A (en) * 2016-06-24 2016-08-31 重庆道同建材有限公司 Airbag core mold component cast hollow floor construction method
CN105908886A (en) * 2016-06-24 2016-08-31 重庆道同建材有限公司 Airbag core mold component
CN107379226A (en) * 2017-08-23 2017-11-24 广东班高得绿色建工科技有限公司 A kind of preparation method of multifunctional fabricated precast hollow building block
CN107313541A (en) * 2017-08-23 2017-11-03 广东班高得绿色建工科技有限公司 A kind of making of prefabricated assembled sandwich hollow slab and construction method
CN107471427A (en) * 2017-08-23 2017-12-15 广东班高得绿色建工科技有限公司 A kind of construction method of prefabricated assembled cassette ceiling
CN107379226B (en) * 2017-08-23 2020-06-23 广东班高得绿色建工科技有限公司 Manufacturing method of multifunctional assembled prefabricated hollow building module
CN107471427B (en) * 2017-08-23 2020-06-23 广东班高得绿色建工科技有限公司 Construction method of prefabricated hollow floor slab
CN107313541B (en) * 2017-08-23 2020-06-23 广东班高得绿色建工科技有限公司 Manufacturing and construction method of prefabricated hollow floor slab module
CN110630019A (en) * 2019-09-16 2019-12-31 中铁广州工程局集团深圳工程有限公司 Core mold for pouring subway rail top air duct and construction method
CN110630019B (en) * 2019-09-16 2021-06-04 中铁广州工程局集团深圳工程有限公司 Core mold for pouring subway rail top air duct and construction method
CN111749395A (en) * 2020-06-22 2020-10-09 吉林建筑大学 Hollow partition plate and vertical connection method thereof

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Owner name: GUANGSHA CHONGQING FIRST BUILDING (GROUP) CO., LT

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Address after: Chongqing Jiulongpo Tanzikou Guangsha City Office Building No.

Patentee after: Guangsha Chongqing first construction (Group) Co., Ltd.

Address before: Chongqing, Fuling District, the magic Road, Seven Star Garden Complex Building 9-3

Patentee before: Liu Guomo