CN103452221A - Pitched roof concrete construction method - Google Patents
Pitched roof concrete construction method Download PDFInfo
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- CN103452221A CN103452221A CN2013104139875A CN201310413987A CN103452221A CN 103452221 A CN103452221 A CN 103452221A CN 2013104139875 A CN2013104139875 A CN 2013104139875A CN 201310413987 A CN201310413987 A CN 201310413987A CN 103452221 A CN103452221 A CN 103452221A
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Abstract
The invention discloses a pitched roof concrete construction method which is characterized in that a double-sided die sealing method is adopted to carry out construction on a pitched roof of which the slope is greater than or equal to 20 degrees; by bracing a bottom die and a top die of the pitched roof, concrete is poured to form a constraint under the slope condition; a short reinforcement is used as a bracket between the bottom die and the top die of the pitched roof; the short reinforcement has a diameter of 22 to 25 mm; the top die and the bottom die are connected into one whole body by split bolts; the split bolts have diameters of 14 to 16 mm; the split bolts are arranged at intervals of 250 to 300 mm; water stop rings are arranged in the middles of the split bolts; the water stop rings have diameters of 40 to 50 mm; reinforcement split heads are arranged on the upper surface of the bottom die for placing an upper negative reinforcement skeleton; sectional pouring and tamping are adopted in the pouring process of concrete, and a die plate at the upper part of the pitched roof is sealed step by step from bottom to top along the pouring progress of concrete.
Description
Technical field
The present invention relates to a kind of pitched roof, particularly a kind of Concrete Construction Method of Inclined Room Face.
Background technology
The concrete construction of conventional method pitched roof is to adopt single face envelope modulus method, and its working procedure is: after supporting bed die, tying up reinforcing bar, the harsh concrete that to build the slump be 8～10mm also photographed on template, then the concrete of slippage tenesmus is scraped to top.When concrete approaches initial set, with portable Small-scale Flat vibrator vibration compacting, and levelling simultaneously.
In many engineering practices, though do not find hole with the pitched roof concrete of single face envelope method constructing and overhanging model after stripping, other honeycombing is arranged.If these honeycomb holes are communicated with, just probably cause rain leakage, and easy-to-search roof leaking point not, thereby be difficult to be repaired.Affect the many factors of single face envelope modulus method concrete engineering quality.As roof pitch size, template smooth degree, rebar surface shape and concrete work character etc.Due to the concrete construction of pitched roof vibration compacting routinely, the concrete mix of constructing on the pitched roof mounted split pattern mainly maintains no longer and glides along inclined-plane by the support power of the frictional resistance of self viscous force, template face and steel mesh reinforcement.But, when template surpasses certain angle and concrete and vibrated effect, because template is less than concrete sliding force to concrete frictional resistance, thereby the phenomenon that concrete glides along template will appear.Before this phenomenon may last till concrete initial set, the segmentation barrier effect of steel mesh reinforcement, will cause concrete the honeycomb hole to occur in addition, cause roof leakage, thereby affect safety and the durability of total thing.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Concrete Construction Method of Inclined Room Face of reliable construction quality, overcomes the uncompacted difficulty of pitched roof concrete vibrating.
The technical solution used in the present invention is: be more than or equal to the pitched roof of 20 ° for the gradient, adopt two-sided envelope method constructing and overhanging model, by installing pitched roof bed die and backform, make concrete build certain constraint in gradient situation, between pitched roof bed die and backform, adopt bar dowel to do support to guarantee the concrete thickness of slab, the bar dowel diameter is 22～25mm, between backform and bed die, adopt split bolt to unify, the split bolt diameter is 14～16mm, the split bolt setting space is 250mm～300mm, seal ring is set to prevent seepage in the middle of split bolt, the seal ring diameter is 40～50mm, steel bar horse-shaped bench is set above bed die and shelves the negative muscles and bones frame in top, prevent the distortion when building operation of negative muscles and bones frame.During concreting, take segmentation to water and smash, with the concreting progress from bottom to top, seal step by step the pitched roof upper mould; Adopt pulverized fuel ash cement to carry out mixing pitched roof concrete, the pea gravel concreten slump is 14～16mm, the maximum particle diameter of cobble is less than or equal to 20mm, mixes the colophonium pyrolytic polymer air entraining agent in concrete, and colophonium pyrolytic polymer air entraining agent blended amount is concrete quality 0.5%.
Kind difference due to cement, its mineralogical composition, consumptive use of water normal consistence are not identical yet, thereby the workability of concrete mix is also produced to certain impact, therefore adopt mobility, water retention, cohesiveness to carry out mixing pitched roof concrete than the better pulverized fuel ash cement of Portland cement, further improve the workability of concrete mix, do not use the poor portland slag cement of mobility and water retention and some Portland pozzolana cement, be beneficial to concrete vibration compacting.
The too little meeting of the pea gravel concreten slump causes the mobility variation, builds to pave to acquire a certain degree of difficulty the easily trickling of construction on pitched roof too greatly of the pea gravel concreten slump for pitched roof.According to a large amount of engineering practices, the pea gravel concreten slump adopts 14～16mm.
The maximum particle diameter of cobble is less than or equal to 20mm, and the grain composition by improving coarse-fine aggregate is to improve mobility and the vibration compacting of concrete mix.
Add a small amount of air entraining agent with the rheological property that improves concrete mix and the durability of hardenite thereof.In concrete whipping process, air entraining agent will be introduced a large amount of microbubbles that is uniformly distributed, stablizes and seal, and can reduce intergranular frictional force, greatly improve the mobility of concrete mix, increase concrete vibration compacting.A large amount of microbubbles that air entraining agent produces, although reduced concrete modulus of elasticity, be conducive to improve concrete crack resistance and impermeability.
The pitched roof that the present invention is directed to different gradient is taked different formwork schemes.Be more than or equal to 20 ° of pitched roofs that are less than 30 ° for the gradient, the formwork scheme is taked as follows: between pitched roof bed die and backform, adopt bar dowel to do support, the bar dowel diameter is 22～25mm, and the bar dowel setting space is one every square metre, bar dowel length equals thickness of slab, with the plate muscle, is welded and fixed.Bed die thickness is 18～20mm, backform thickness is 18～20mm, backform length and width are 800～1000mm, indent stairstepping interface is kept somewhere at the backform edge, stairstepping interface indent length is 8～10mm, between adjacent backform, seal mould is set, evagination stairstepping interface is kept somewhere at the seal mould edge, connect between seal mould and backform and adopt rivet to connect, between backform and bed die, adopt split bolt to unify, the split bolt diameter is 14～16mm, the split bolt setting space is 250mm～300mm, seal ring is set to prevent seepage in the middle of split bolt, the seal ring diameter is 40～50mm, steel bar horse-shaped bench is set above bed die and shelves the negative muscles and bones frame in top.The seal mould position, as the casting and compacting of concrete hole, is watered and is smash from the bottom to top by pouring hole during concreting, utilizes little vibrating spear vibration compacting, is built from lower to upper successively.Build along with concrete, along with concrete rising, seal mould is successively sealed from bottom to top.
This scheme has the following advantages: because the surface layer template only leaves rear envelope template, need sealing, workload is little, be conducive to last time after concreting, completed in time installing of residue template, avoided before next concreting last time concrete to occur condensing, implement and operating personnel's work plane is provided simultaneously.
Be more than or equal to the pitched roof of 30 ° for the gradient, the formwork scheme is taked as follows: at pitched roof, in 900mm altitude range from bottom to top, install match plate, all the other positions only install the bottom template of pitched roof, between backform and bed die, adopt split bolt to unify, the split bolt diameter is 14～16mm, the split bolt setting space is 250mm～300mm, seal ring is set to prevent seepage in the middle of split bolt, the seal ring diameter is 40-50mm, steel bar horse-shaped bench is set above bed die and shelves the negative muscles and bones frame in top.After the 900mm of the complete bottom of concreting height concrete, carry out from bottom to top installing of second layer 900mm height match plate, then carry out that the second layer is concrete builds, so repeatedly, until that the pitched roof concrete is all built is complete.
This scheme has the following advantages: carrying out concrete watering while smashing, can adopt small-sized vibrating spear to carry out omnibearing vibrating, and can, by observe and decide concrete vibration compacting whether, guarantee concrete pouring quality.
Construction quality of the present invention is better, and concrete density is higher, has effectively prevented the phenomenon of pitched roof seepage.
The accompanying drawing explanation
The two-sided envelope mould of Fig. 1 open type schematic diagram.
Accompanying drawing sign: 1, bed die, 2, split bolt, 3, seal ring, 4, backform, 5, seal mould, 6, steel bar horse-shaped bench.
The specific embodiment one
Below in conjunction with accompanying drawing, the present embodiment is described in detail.
Certain engineering construction area is 980M
2, be four story frame structure buildings, roof pitch is 26 °, and the pitched roof total length is 45m, and roof panel thickness is 120mm.
Fig. 1 is the two-sided envelope mould of open type schematic diagram, by installing pitched roof bed die 1 and backform 4, make concrete build certain constraint in gradient situation, between pitched roof bed die 1 and backform 4, adopt bar dowel to do support to guarantee the concrete thickness of slab, the bar dowel diameter is 22mm, between backform 4 and bed die 1, adopt split bolt 2 to unify, split bolt 2 diameters are 14mm, split bolt 2 setting spaces are 250mmmm, seal ring 3 is set to prevent seepage in the middle of split bolt 2, seal ring 3 diameters are 45mm, steel bar horse-shaped bench 6 is set above bed die 1 and shelves the negative muscles and bones frame in top, prevent the distortion when building operation of negative muscles and bones frame.During concreting, take segmentation to water and smash, with the concreting progress from bottom to top, seal step by step the pitched roof upper mould; Adopt pulverized fuel ash cement to carry out mixing pitched roof concrete, the pea gravel concreten slump is 15mm, and the maximum particle diameter of cobble is less than or equal to 20mm, mixes the colophonium pyrolytic polymer air entraining agent in concrete, and colophonium pyrolytic polymer air entraining agent blended amount is concrete quality 0.5%.
The formwork scheme is taked as follows: between pitched roof bed die 1 and backform 4, adopt bar dowel to do support, the bar dowel diameter is 22mm, and the bar dowel setting space is one every square metre, and bar dowel length equals thickness of slab, with the plate muscle, is welded and fixed.Bed die 1 thickness is 18mm, backform 4 thickness are 18mm, backform 4 length and width are 900mm, indent stairstepping interface is kept somewhere at backform 4 edges, stairstepping interface indent length is 10mm, between adjacent backform 4, seal mould 5 is set, evagination stairstepping interface is kept somewhere at seal mould 5 edges, connect between seal mould 5 and backform 4 and adopt rivet to connect, between backform 4 and bed die 1, adopt split bolt 2 to unify, split bolt 2 diameters are 14mm, split bolt 2 setting spaces are 250mm, seal ring 3 is set to prevent seepage in the middle of split bolt 2, seal ring 3 diameters are 45mm, steel bar horse-shaped bench 6 is set above bed die 1 and shelves the negative muscles and bones frame in top.Seal mould 5 positions, as the casting and compacting of concrete hole, are watered and are smash from the bottom to top by pouring hole during concreting, utilize little vibrating spear vibration compacting, are built from lower to upper successively.Build along with concrete, along with concrete rising, seal mould 5 is successively sealed from bottom to top.
The specific embodiment two
Certain engineering construction area is 830M
2, be three story frame structure buildings, roof pitch is 35 °, and the pitched roof total length is 42m, and roof panel thickness is 120mm.
The present embodiment adopts two-sided envelope method constructing and overhanging model, by installing pitched roof bed die 1 and backform 4, make concrete build certain constraint in gradient situation, between pitched roof bed die 1 and backform 4, adopt bar dowel to do support to guarantee the concrete thickness of slab, the bar dowel diameter is 22mm, between backform 4 and bed die 1, adopt split bolt 2 to unify, split bolt 2 diameters are 14mm, split bolt 2 setting spaces are 250mmmm, seal ring 3 is set to prevent seepage in the middle of split bolt 2, seal ring 3 diameters are 45mm, steel bar horse-shaped bench 6 is set above bed die 1 and shelves the negative muscles and bones frame in top, prevent the distortion when building operation of negative muscles and bones frame.During concreting, take segmentation to water and smash, with the concreting progress from bottom to top, seal step by step the pitched roof upper mould; Adopt pulverized fuel ash cement to carry out mixing pitched roof concrete, the pea gravel concreten slump is 15mm, and the maximum particle diameter of cobble is less than or equal to 20mm, mixes the colophonium pyrolytic polymer air entraining agent in concrete, and colophonium pyrolytic polymer air entraining agent blended amount is concrete quality 0.5%.
The formwork scheme is taked as follows: at pitched roof, in 900mm altitude range from bottom to top, install match plate, all the other positions only install the bottom template of pitched roof, between backform 4 and bed die 1, adopt split bolt 2 to unify, split bolt 2 diameters are 14mm, split bolt 2 setting spaces are 250mm, seal ring 3 is set to prevent seepage in the middle of split bolt 2, seal ring 3 diameters are 45mm, steel bar horse-shaped bench 6 is set above bed die 1 and shelves the negative muscles and bones frame in top.After the 900mm of the complete bottom of concreting height concrete, carry out from bottom to top installing of second layer 900mm height match plate, then carry out that the second layer is concrete builds, so repeatedly, until that the pitched roof concrete is all built is complete.
Claims (4)
1. a Concrete Construction Method of Inclined Room Face, it is characterized in that being more than or equal to for the gradient pitched roof of 20 °, adopt two-sided envelope method constructing and overhanging model, by installing pitched roof bed die and backform, make concrete build Constrained in gradient situation, between pitched roof bed die and backform, adopt bar dowel to do support, the bar dowel diameter is 22～25mm, between backform and bed die, adopt split bolt to unify, the split bolt diameter is 14～16mm, the split bolt setting space is 250mm-300mm, seal ring is set in the middle of split bolt, the seal ring diameter is 40-50mm, steel bar horse-shaped bench is set above bed die and shelves the negative muscles and bones frame in top, during concreting, take segmentation to water and smash, with the concreting progress from bottom to top, seal step by step the pitched roof upper mould.
2. Concrete Construction Method of Inclined Room Face according to claim 1, it is characterized in that adopting pulverized fuel ash cement to carry out mixing pitched roof concrete, the pea gravel concreten slump is 14-16mm, the maximum particle diameter of cobble is less than or equal to 20mm, mix the colophonium pyrolytic polymer air entraining agent in concrete, colophonium pyrolytic polymer air entraining agent blended amount is concrete quality 0.5%.
3. Concrete Construction Method of Inclined Room Face according to claim 1, it is characterized in that being more than or equal to 20 ° of pitched roofs that are less than 30 ° for the gradient, the formwork scheme is taked as follows: between pitched roof bed die and backform, adopt bar dowel to do support, the bar dowel diameter is 22-25mm, the bar dowel setting space is one every square metre, bar dowel length equals thickness of slab, with the plate muscle, is welded and fixed, bed die thickness is 18-20mm, backform thickness is 18-20mm, backform length and width are 800-1000mm, indent stairstepping interface is kept somewhere at the backform edge, stairstepping interface indent length is 8-10mm, between adjacent backform, seal mould is set, evagination stairstepping interface is kept somewhere at the seal mould edge, connect between seal mould and backform and adopt rivet to connect, between backform and bed die, adopt split bolt to unify, the split bolt diameter is 14-16mm, the split bolt setting space is 250mm-300mm, seal ring is set to prevent seepage in the middle of split bolt, the seal ring diameter is 40-50mm, steel bar horse-shaped bench is set above bed die and shelves the negative muscles and bones frame in top, the seal mould position, as the casting and compacting of concrete hole, is watered and is smash from the bottom to top by pouring hole during concreting, utilizes little vibrating spear vibration compacting, is built from lower to upper successively, build along with concrete, along with concrete rising, seal mould is successively sealed from bottom to top.
4. Concrete Construction Method of Inclined Room Face according to claim 1, it is characterized in that being more than or equal to for the gradient pitched roof of 30 °, the formwork scheme is taked as follows: at pitched roof, in 900mm altitude range from bottom to top, install match plate, all the other positions only install the bottom template of pitched roof, between backform and bed die, adopt split bolt to unify, the split bolt diameter is 14-16mm, the split bolt setting space is 250mm～300mm, seal ring is set to prevent seepage in the middle of split bolt, the seal ring diameter is 40-50mm, steel bar horse-shaped bench is set above bed die and shelves the negative muscles and bones frame in top, after the 900mm of the complete bottom of concreting height concrete, carry out from bottom to top installing of second layer 900mm height match plate, then carry out that the second layer is concrete builds, so repeatedly, until that the pitched roof concrete is all built is complete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310413987.5A CN103452221B (en) | 2013-08-26 | 2013-08-26 | Concrete Construction Method of Inclined Room Face |
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| CN201310413987.5A CN103452221B (en) | 2013-08-26 | 2013-08-26 | Concrete Construction Method of Inclined Room Face |
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| CN103452221A true CN103452221A (en) | 2013-12-18 |
| CN103452221B CN103452221B (en) | 2016-01-20 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018674A (en) * | 2014-06-10 | 2014-09-03 | 中机环建集团有限公司 | Concrete pouring process for large-angel sloping roof |
| CN104234414A (en) * | 2014-09-04 | 2014-12-24 | 江苏沪宁钢机股份有限公司 | Steel bottom template of leaf-shaped roof and pouring method for blade-shaped roof |
| CN104763143A (en) * | 2015-04-08 | 2015-07-08 | 中国建筑土木建设有限公司 | Pitched roof template system |
| CN104847107A (en) * | 2015-03-19 | 2015-08-19 | 蔡舒廷 | Composite side wall flat mold |
| CN107386467A (en) * | 2017-08-04 | 2017-11-24 | 苏交科集团股份有限公司 | Steel reinforced concrete joint portion water resistance lifting construction and its method to set up |
| CN107605107A (en) * | 2017-09-18 | 2018-01-19 | 中建八局第三建设有限公司 | A kind of method for controlling pitched roof concrete construction quality |
| CN109235891A (en) * | 2018-09-04 | 2019-01-18 | 中建八局第三建设有限公司 | A kind of Large Span Prestressed Beam concrete pitched roof jump storehouse method construction method |
| CN109577538A (en) * | 2018-12-12 | 2019-04-05 | 湖南易兴建筑有限公司 | Roof construction method |
| CN110005112A (en) * | 2019-04-16 | 2019-07-12 | 中国十七冶集团有限公司 | A kind of pitched roof concrete structure and its construction method |
| CN110761559A (en) * | 2019-10-16 | 2020-02-07 | 中国二十冶集团有限公司 | Method for fixing concrete pouring template of inclined roof |
| CN111058631A (en) * | 2020-02-29 | 2020-04-24 | 中国二十二冶集团有限公司 | Concrete construction method for large-gradient inclined roof |
| CN112900854A (en) * | 2021-01-13 | 2021-06-04 | 中国水利水电第八工程局有限公司 | Template system for slope bottom plate construction and construction method |
| CN113898104A (en) * | 2021-10-15 | 2022-01-07 | 中建八局第一建设有限公司 | Concrete construction system for large-gradient special-shaped inclined roof and construction method thereof |
| CN115977381A (en) * | 2023-01-18 | 2023-04-18 | 中国十七冶集团有限公司 | Reinforcing device suitable for large-gradient roof formwork and construction method |
| CN116220369A (en) * | 2023-01-09 | 2023-06-06 | 中国十七冶集团有限公司 | Concrete pouring method for large-gradient roof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018674A (en) * | 2014-06-10 | 2014-09-03 | 中机环建集团有限公司 | Concrete pouring process for large-angel sloping roof |
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| CN104234414A (en) * | 2014-09-04 | 2014-12-24 | 江苏沪宁钢机股份有限公司 | Steel bottom template of leaf-shaped roof and pouring method for blade-shaped roof |
| CN104847107A (en) * | 2015-03-19 | 2015-08-19 | 蔡舒廷 | Composite side wall flat mold |
| CN104763143A (en) * | 2015-04-08 | 2015-07-08 | 中国建筑土木建设有限公司 | Pitched roof template system |
| CN107386467A (en) * | 2017-08-04 | 2017-11-24 | 苏交科集团股份有限公司 | Steel reinforced concrete joint portion water resistance lifting construction and its method to set up |
| CN107605107A (en) * | 2017-09-18 | 2018-01-19 | 中建八局第三建设有限公司 | A kind of method for controlling pitched roof concrete construction quality |
| CN109235891A (en) * | 2018-09-04 | 2019-01-18 | 中建八局第三建设有限公司 | A kind of Large Span Prestressed Beam concrete pitched roof jump storehouse method construction method |
| CN109577538A (en) * | 2018-12-12 | 2019-04-05 | 湖南易兴建筑有限公司 | Roof construction method |
| CN110005112A (en) * | 2019-04-16 | 2019-07-12 | 中国十七冶集团有限公司 | A kind of pitched roof concrete structure and its construction method |
| CN110761559A (en) * | 2019-10-16 | 2020-02-07 | 中国二十冶集团有限公司 | Method for fixing concrete pouring template of inclined roof |
| CN111058631A (en) * | 2020-02-29 | 2020-04-24 | 中国二十二冶集团有限公司 | Concrete construction method for large-gradient inclined roof |
| CN111058631B (en) * | 2020-02-29 | 2022-03-11 | 中国二十二冶集团有限公司 | Concrete construction method for large-gradient inclined roof |
| CN112900854A (en) * | 2021-01-13 | 2021-06-04 | 中国水利水电第八工程局有限公司 | Template system for slope bottom plate construction and construction method |
| CN113898104A (en) * | 2021-10-15 | 2022-01-07 | 中建八局第一建设有限公司 | Concrete construction system for large-gradient special-shaped inclined roof and construction method thereof |
| CN116220369A (en) * | 2023-01-09 | 2023-06-06 | 中国十七冶集团有限公司 | Concrete pouring method for large-gradient roof |
| CN115977381A (en) * | 2023-01-18 | 2023-04-18 | 中国十七冶集团有限公司 | Reinforcing device suitable for large-gradient roof formwork and construction method |
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| CN103452221B (en) | 2016-01-20 |
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Effective date of registration: 20191211 Address after: Jiaxing City, Zhejiang province 314300 Haiyan ganpu town wall Hill Industrial Park Patentee after: JIAXING LIFUTONG NEW MATERIAL TECHNOLOGY CO.,LTD. Address before: 325000 No. 4, Jinchuan Road, Tianhe street, Wenzhou economic and Technological Development Zone, Zhejiang, China Patentee before: Ye Changqing |
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