CN103470042A - Construction method for integrally casting rigid sloping roof - Google Patents

Construction method for integrally casting rigid sloping roof Download PDF

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Publication number
CN103470042A
CN103470042A CN2012101842120A CN201210184212A CN103470042A CN 103470042 A CN103470042 A CN 103470042A CN 2012101842120 A CN2012101842120 A CN 2012101842120A CN 201210184212 A CN201210184212 A CN 201210184212A CN 103470042 A CN103470042 A CN 103470042A
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China
Prior art keywords
concrete
casting
roofing
region
band
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CN2012101842120A
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CN103470042B (en
Inventor
侯宪伟
曾学周
魏宏超
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China MCC20 Group Corp Ltd
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China MCC20 Group Corp Ltd
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Priority to CN201210184212.0A priority Critical patent/CN103470042B/en
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Publication of CN103470042B publication Critical patent/CN103470042B/en
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Abstract

The invention relates to roof casting construction. A construction method for integrally casting a rigid sloping roof is characterized by comprising the following steps of presetting and dividing a first casting belt region on the sloping roof; carrying out reinforcing bar reinforcement according to the divided first casting belt region after the binding of reinforcing bars designed on the sloping roof is completed, forming a first casting belt by adopting a double-layer steel wire mesh sealing model, dividing a concrete casting region by the first casting belt, arranging a steel wire mesh block in a larger-slope region, and covering the surface of the larger-slope region by adopting a single-layer steel wire mesh; casting concrete from one side of a rooftop to the other side of the rooftop or from two sides to the middle part, a, casting first casting belt concrete by adopting micro-expansive concrete, and paying attention to maintenance reinforcing and first vibrating, wherein the concrete surface is obviously sunk by pressing the concrete surface with one hand, the maintenance time is not less than 1 hour, and primary condensation is achieved; b, casting roofing concrete in concrete casting regions at two sides of the first casting belt which is cast, wherein the casting time is less than 1 hour, and a next first casting belt can be cast at the same time; circulating a and b until roofing concrete casting is finished. The construction method disclosed by the invention is beneficial for increasing concrete strength, and slope concrete is in one-step forming.

Description

The job practices of the oblique roofing of a kind of monobloc cast rigidity
Technical field
The present invention relates to the roofing pouring construction, relate in particular to the oblique roofing pouring construction method of rigidity.
Background technology
Growing along with building construction market, Architectural Design is more and more pursued the coordination function of Mechanical Builds attractive in appearance and Design Works and surrounding enviroment; As relatively hankered after building the oblique roofing of rigidity of heavy grade in market, then on deck paving encaustic tile sheet, when improving the structure space utilization rate, be convenient to structure drainage, and overlook the monolithic architecture group and can play the effect of making something perfect even more perfect.But because oblique roofing approaches the arch form Force principle, load transmission and the outside horizontal thrust of easy generation, thereby destroy the frame stressing member, therefore design oblique roofing, its globality, rigidity are all had to higher requirement, should it bear the transmission vertical load function of the satisfied constraint of its rigidity stressed member again.But owing to designing oblique roof pitch large (can approach 60 degree), in casting process, concrete itself is in liquid state, certain stream plasticity is arranged, and after tiltedly in Roof Design reinforced mesh casting process, being subject to vibrating load, can disperse to transmit along reinforcing bar, thereby destroy the adjacent concrete zone that is about to initial set, primary concreting moulding difficulty is strengthened.
Summary of the invention
The present invention is intended to address the aforementioned drawbacks, and the job practices of the oblique roofing of a kind of monobloc cast rigidity is provided.The present invention is conducive to concrete strength and improves, the inclined concrete one-shot forming.
For addressing the above problem, the present invention is achieved in that the job practices of the oblique roofing of a kind of monobloc cast rigidity, and it comprises the following steps:
Step 1, on oblique roofing, region is first watered in default division;
Step 2, tiltedly, after the Roof Design reinforcing bar binding, first water region according to division and carry out the reinforcing bar reinforcement, adopt clad steel silk screen envelope mould to form and first water band, divide the concrete casting area with first watering band, the gauze wire cloth gear is set up in the larger zone of the gradient, and surface adopts individual layer gauze wire cloth cover;
Step 3, build concrete in the middle of one side direction opposite side or two side direction from roof,
A, adopt the microdilatancy concrete to build and first water the band concrete, and note strengthening maintenance and vibrating for the first time; Have obviously and subside by the concrete surface with hand, and curing time is no less than 1 hour and reaches initial set;
B, build the roofing concrete completing the band both sides concrete casting area that first waters of building, and the time of building be no more than 1 hour, build next section simultaneously and first water band;
Step 4, till circulation step three end roofing concretes are built.
The job practices of the oblique roofing of described monobloc cast rigidity, in described step 2, every casting area area of division is not more than 200m 2.
The present invention utilizes concrete secondary vibration in previous hour of initial set can not reduce intensity, and be beneficial to the characteristics that improve concrete strength, set up and first water band, make the vibrating load of reinforcing bar transmission become the payload values of oblique roofing concrete secondary vibration, changed the unfavorable factor of former reinforcing bar transmitting vibrations load.First water the vibrating load transmitted with absorbing a large amount of reinforced mesh after the concrete initial set, be conducive to concrete strength and improve, the inclined concrete one-shot forming, avoid concrete large tracts of land segregation, the obscission of having built to occur.In addition, first water the region reinforcing bar and shift to an earlier date reinforcement, can avoid the reason reduction rigidity such as cold seam, further, regulation and control concrete match ratio, ginseng are joined early (delaying) solidifying agent, can control the concrete initial setting time, solve the defect of narrow field, personnel, equipment, material deficiency, enlarge oblique Roof Design, job area.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated;
The sequential schematic of building that Fig. 1 is one embodiment of the present of invention;
Fig. 2 is the described band sectional schematic diagram that first waters;
Fig. 3 is the described band side schematic view that first waters.
The specific embodiment
Refer to Fig. 1-Fig. 3: the present invention is achieved in that the job practices of the oblique roofing of a kind of monobloc cast rigidity, and it comprises the following steps:
Step 1, on oblique roofing, region 1 is first watered in default division;
Step 2, tiltedly, after the Roof Design reinforcing bar binding, first water region 1 according to division and carry out the reinforcing bar reinforcement, adopt clad steel silk screen B envelope mould to form and first water band A, divide concrete casting area 2 with first watering band, gauze wire cloth gear C is set up in the larger zone of the gradient, and surface adopts individual layer gauze wire cloth cover;
Step 3, build concrete in the middle of one side direction opposite side or two side direction from roof,
A, adopt the microdilatancy concrete to build and first water the band concrete, and note strengthening maintenance and vibrating for the first time; Have obviously and subside by the concrete surface with hand, and curing time is no less than 1 hour and reaches initial set;
B, build the roofing concrete completing the band both sides concrete casting area that first waters of building, and the time of building be no more than 1 hour, build next section simultaneously and first water band;
Step 4, till circulation step three end roofing concretes are built.
The job practices of the oblique roofing of described monobloc cast rigidity, in described step 2, every casting area area of division is not more than 200m 2.
Fig. 1 is one embodiment of the present of invention, and in figure, A is for first watering band, and arrow points is for building direction, building of this embodiment is to build from a side direction opposite side, while building, first water band and concrete pouring area and build according to numerical order separately, first water to be with identical with concrete pouring area numeral number the time and build.
Visible, the present invention utilizes concrete secondary vibration in hour of initial set can not reduce intensity, and be beneficial to the characteristics that improve concrete strength, setting up and first water band, is favorable factor thereby the payload values that makes the vibrating load of reinforcing bar transmission become oblique roofing concrete secondary vibration has changed the unfavorable factor of reinforcing bar transmitting vibrations load.

Claims (3)

1. the job practices of the oblique roofing of monobloc cast rigidity, is characterized in that, it comprises the following steps:
Step 1, on oblique roofing, region is first watered in default division;
Step 2, tiltedly, after the Roof Design reinforcing bar binding, first water region according to division and carry out the reinforcing bar reinforcement, adopts clad steel silk screen envelope mould to form and first water band, and surface adopts individual layer gauze wire cloth cover, with first watering to be with, divides the concrete casting area,
Step 3, build concrete in the middle of one side direction opposite side or two side direction from roof,
A, adopt the microdilatancy concrete to build and first water the band concrete, and note strengthening maintenance and vibrating for the first time; Have obviously and subside by the concrete surface with hand, and curing time is no less than 1 hour and reaches initial set;
B, build the roofing concrete completing the band both sides concrete casting area that first waters of building, and the time of building be no more than 1 hour, build next section simultaneously and first water band;
Step 4, till circulation step three end roofing concretes are built.
2. the job practices of the oblique roofing of monobloc cast rigidity according to claim 1, is characterized in that, in described step 2, every casting area area of division is not more than 200m 2.
3. the job practices of the oblique roofing of monobloc cast rigidity according to claim 1, the band both sides of first watering of described step 2 are provided with the gauze wire cloth gear.
CN201210184212.0A 2012-06-06 2012-06-06 A kind of construction method of monobloc cast rigidity Sloping roof Active CN103470042B (en)

Priority Applications (1)

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CN201210184212.0A CN103470042B (en) 2012-06-06 2012-06-06 A kind of construction method of monobloc cast rigidity Sloping roof

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Application Number Priority Date Filing Date Title
CN201210184212.0A CN103470042B (en) 2012-06-06 2012-06-06 A kind of construction method of monobloc cast rigidity Sloping roof

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CN103470042A true CN103470042A (en) 2013-12-25
CN103470042B CN103470042B (en) 2016-03-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821023A (en) * 2019-11-28 2020-02-21 中国一冶集团有限公司 Villa flat tile large-gradient inclined roof construction method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2753702A (en) * 1998-08-31 2002-05-16 Bhp Steel Limited A modular roofing system
CN201649459U (en) * 2010-04-23 2010-11-24 王世杰 Slope roof cast-in-place concrete structure
CN202170600U (en) * 2011-07-21 2012-03-21 中国建筑第二工程局有限公司 Anti-segregation device for concrete pouring of large-angle sloping roof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2753702A (en) * 1998-08-31 2002-05-16 Bhp Steel Limited A modular roofing system
CN201649459U (en) * 2010-04-23 2010-11-24 王世杰 Slope roof cast-in-place concrete structure
CN202170600U (en) * 2011-07-21 2012-03-21 中国建筑第二工程局有限公司 Anti-segregation device for concrete pouring of large-angle sloping roof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张同军,徐爱斌: "45°坡屋面混凝土施工技术的研究与应用", 《建筑技术》, vol. 35, no. 7, 31 July 2004 (2004-07-31) *
张宪辉: "超长无缝现浇混凝土结构施工技术", 《科技致富向导》, no. 14, 31 May 2011 (2011-05-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821023A (en) * 2019-11-28 2020-02-21 中国一冶集团有限公司 Villa flat tile large-gradient inclined roof construction method

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