CN110863650A - Double-layer cantilever plate formwork installation construction method - Google Patents
Double-layer cantilever plate formwork installation construction method Download PDFInfo
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- CN110863650A CN110863650A CN201911165174.2A CN201911165174A CN110863650A CN 110863650 A CN110863650 A CN 110863650A CN 201911165174 A CN201911165174 A CN 201911165174A CN 110863650 A CN110863650 A CN 110863650A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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Abstract
The invention discloses a double-layer cantilever plate formwork installation construction method, which comprises the following steps: 1. preparation before construction; 2. checking and accepting the steel bars; 3. mounting a supporting mechanism; 4. and detecting the double-layer cantilever plate. By adopting the construction method, the support mechanisms are arranged at the lower two layers of the construction layer of the double-layer cantilever beam plate, so that the stability of the double-layer cantilever beam plate is improved, and the erection period is greatly shortened.
Description
Technical Field
The invention relates to a building construction method, in particular to a double-layer cantilever plate formwork installation construction method.
Background
In order to pursue the beautiful appearance and peculiar appearance of a building, the appearance and the quality of the building are improved, and the building is more and more widely used in university engineering as a special building design form. The double-layer cantilever slab is used as a cast-in-place concrete cantilever structure, horizontal steel bars of the cantilever slab are reserved or pre-embedded in the traditional construction method generally during frame construction, and after the frame concrete is poured, a cantilever component is poured independently. The construction process has the problems that the positions of the embedded steel bars are inaccurate, the horizontal steel bars are bent for multiple times, the construction joints are vertically reserved at the roots of the plates, the residual concrete of the construction joints is not dug in place and the like, so that the bearing capacity and the durability of the cantilever plates are reduced to a certain extent, even leakage and potential safety hazards are formed, and the plate surface cracking quality problem caused by later-stage decoration and finishing is solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a double-layer cantilever slab formwork installation construction method.
In order to achieve the purpose, the invention adopts the technical scheme that: the method for installing and constructing the double-layer cantilever plate formwork comprises the following steps:
a. preparation before construction: determining the size and the position of the double-layer cantilever plate according to the structural construction drawing and the building construction drawing, performing plane paying-off and elevation reading and measuring, and finishing the processing of the steel bars and the templates of the double-layer cantilever plate;
b. and (4) checking and accepting the steel bars: according to the template installation scheme, a reinforced lower cantilever plate is erected and installed with a floor template, the lower cantilever plate, horizontal steel bars and floor slab steel bars are horizontally fixed by adopting bidirectional steel bars, and steel bar concealment acceptance is carried out after the steel bars are bound;
c. installing a supporting mechanism: installing double-layer cantilever plate side formworks, fixing the double-layer cantilever plate side formworks through a counter-pulling screw rod by penetrating a beam between transverse square materials, supporting the double-layer cantilever plates at two ends of a vertical square material, and supporting the vertical square material through an inclined steel pipe;
d. detecting a double-layer cantilever plate: the load of calculating double-deck board, reinforcing bar and supporting mechanism of encorbelmenting multiplies 2 times factor of safety and converts into single square load, respectively sets up 5 deformation observation points before and after the loading on double-deck board of encorbelmenting, sets up respectively in double-deck board four corners of encorbelmenting and central point and puts, erects the spirit level and carries out the deformation monitoring of double-deck board of encorbelmenting, and load test duration is 8 hours, and double-deck board of encorbelmenting maximum settlement is not more than 3mm then qualified.
Preferably, the step c of installing a support mechanism further comprises: one end of the inclined steel pipe, which is close to the vertical square stock, is provided with big scurf.
Preferably, the size of the oblique steel pipe in the step c is 48 × 3.0 or 60 × 4.0.
Preferably, the step c further comprises: the opposite-pulling screw rod is positioned in the PVC pipe sleeve and penetrates through the wall body.
Preferably, the step b further comprises: and pouring the lower cantilever plate and the floor slab concrete, vibrating to be compact, pouring the concrete to the position with the elevation of the floor slab being plus 0.5mm, and curing after the concrete is poured.
Preferably, an inner side template is installed, the plate surface and the upper cantilever plate steel bars are checked and accepted after the reinforcement is completed, the lateral wall and the upper cantilever plate concrete are poured after the checking and acceptance is qualified, and the vibration is dense.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the construction method, the supporting mechanisms are arranged on the two layers below the construction layer of the double-layer cantilever beam plate, so that the stability of the double-layer cantilever beam plate is improved, and the erection period is greatly shortened;
2. the invention has stable structure, the support frame can not deform, and the support frame can be repeatedly used for many times, thereby reducing the construction cost.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic installation diagram of a double-layer cantilever slab formwork installation construction method.
The concrete slab comprises 1, a floor slab, 2, a split screw, 3, a template, 4, big-end chips, 5, an inclined steel pipe, 6, an upper cantilever plate, 7, a lower cantilever plate, 8, a transverse square stock and 9, a vertical square stock.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the method for installing and constructing the double-layer cantilever slab formwork is characterized by comprising the following steps:
a. preparation before construction: determining the size and the position of the double-layer cantilever plate according to the structural construction drawing and the building construction drawing, performing plane paying-off and elevation reading and measuring, and finishing the processing of the steel bars and the template 3 of the double-layer cantilever plate;
b. and (4) checking and accepting the steel bars: according to the template installation scheme, a reinforced lower cantilever plate 7 is erected and installed with a floor slab template, the lower cantilever plate 7, horizontal steel bars and floor slab steel bars are horizontally fixed by adopting bidirectional steel bars, and steel bar concealment acceptance is carried out after the steel bars are bound;
c. installing a supporting mechanism: installing double-layer cantilever slab side formworks, fixing the double-layer cantilever slabs through beams from the transverse square stock 8 through a counter-pulling screw rod 2, supporting the double-layer cantilever slabs at two ends of a vertical square stock 9, and supporting the vertical square stock 9 through an inclined steel pipe 5;
d. detecting a double-layer cantilever plate: the load of calculating double-deck board, reinforcing bar and supporting mechanism of encorbelmenting multiplies 2 times factor of safety and converts into single square load, respectively sets up 5 deformation observation points before and after the loading on double-deck board of encorbelmenting, sets up respectively in double-deck board four corners of encorbelmenting and central point and puts, erects the spirit level and carries out the deformation monitoring of double-deck board of encorbelmenting, and load test duration is 8 hours, and double-deck board of encorbelmenting maximum settlement is not more than 3mm then qualified.
Wherein: the step c of installing a supporting mechanism further comprises: one end of the inclined steel pipe 5, which is close to the vertical square stock 9, is provided with large chips 4; the specification of the inclined steel pipe in the step c is 48 x 3.0; the opposite-pulling screw rod 2 is positioned in the PVC pipe sleeve and penetrates through the wall body; the step b further comprises the following steps: pouring the lower cantilever plate and the floor slab concrete, vibrating to be compact, pouring the concrete to the position with the elevation of the floor slab being plus 0.5mm, and curing after the concrete is poured; installing an inner side template, checking and accepting the plate surface and the upper layer cantilever plate 6 steel bars after reinforcing, pouring lateral wall and upper layer cantilever plate 7 plate concrete after checking and accepting are qualified, and vibrating and compacting.
According to the construction method, the supporting mechanisms are arranged on the lower two layers of the construction layer of the double-layer cantilever beam plate, so that the stability of the double-layer cantilever beam plate is improved, and the erection period is greatly shortened.
The invention has stable structure, the support frame can not deform, and the support frame can be repeatedly used for many times, thereby reducing the construction cost.
It is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various insubstantial modifications of the inventive process concepts and solutions, or its application to other applications without modification.
Claims (6)
1. The method for installing and constructing the double-layer cantilever slab formwork is characterized by comprising the following steps of:
a. preparation before construction: determining the size and the position of the double-layer cantilever plate according to the structural construction drawing and the building construction drawing, performing plane paying-off and elevation reading and measuring, and finishing the processing of the steel bars and the templates of the double-layer cantilever plate;
b. and (4) checking and accepting the steel bars: according to the template installation scheme, a reinforced lower cantilever plate is erected and installed with a floor template, the lower cantilever plate, horizontal steel bars and floor slab steel bars are horizontally fixed by adopting bidirectional steel bars, and steel bar concealment acceptance is carried out after the steel bars are bound;
c. installing a supporting mechanism: installing double-layer cantilever plate side formworks, fixing the double-layer cantilever plate side formworks through a counter-pulling screw rod by penetrating a beam between transverse square materials, supporting the double-layer cantilever plates at two ends of a vertical square material, and supporting the vertical square material through an inclined steel pipe;
d. detecting a double-layer cantilever plate: the load of calculating double-deck board, reinforcing bar and supporting mechanism of encorbelmenting multiplies 2 times factor of safety and converts into single square load, respectively sets up 5 deformation observation points before and after the loading on double-deck board of encorbelmenting, sets up respectively in double-deck board four corners of encorbelmenting and central point and puts, erects the spirit level and carries out the deformation monitoring of double-deck board of encorbelmenting, and load test duration is 8 hours, and double-deck board of encorbelmenting maximum settlement is not more than 3mm then qualified.
2. The method for installing and constructing the double-layer cantilever slab formwork of claim 1, wherein the step c of installing the supporting mechanism further comprises the following steps: one end of the inclined steel pipe, which is close to the vertical square stock, is provided with big scurf.
3. The method for installing and constructing the double-layer cantilever slab formwork according to claim 1, wherein the specification of the inclined steel pipe in the step c is 48 x 3.0 or 60 x 4.0.
4. The double-deck cantilever slab formwork installation and construction method according to claim 1, wherein the step c further comprises: the opposite-pulling screw rod is positioned in the PVC pipe sleeve and penetrates through the wall body.
5. The double-deck cantilever slab formwork installation construction method according to claim 1, wherein the step b further comprises: and pouring the lower cantilever plate and the floor slab concrete, vibrating to be compact, pouring the concrete to the position with the elevation of the floor slab being plus 0.5mm, and curing after the concrete is poured.
6. The method for installing and constructing the double-layer cantilever slab formwork according to any one of claims 1 to 5, wherein the inner formwork is installed, the checking and acceptance of the plate surface and the upper layer cantilever slab steel bars are carried out after the reinforcement is finished, the lateral wall and the upper layer cantilever slab concrete are poured after the checking and acceptance is qualified, and the vibration compaction is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911165174.2A CN110863650A (en) | 2019-11-25 | 2019-11-25 | Double-layer cantilever plate formwork installation construction method |
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| CN201911165174.2A CN110863650A (en) | 2019-11-25 | 2019-11-25 | Double-layer cantilever plate formwork installation construction method |
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Citations (6)
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|---|---|---|---|---|
| DE102007016724B3 (en) * | 2007-04-07 | 2008-10-02 | Peri Gmbh | Beam formwork with automatic de-shuttering of the inner shield |
| CN103669562A (en) * | 2013-12-18 | 2014-03-26 | 北京城建六建设集团有限公司 | Cantilever bay window board concrete overall pouring structure and construction method thereof |
| CN105040975A (en) * | 2015-07-15 | 2015-11-11 | 中国建筑第二工程局有限公司 | Support platform for bay window construction and bay window construction method |
| CN105971274A (en) * | 2016-06-13 | 2016-09-28 | 中国建筑第二工程局有限公司 | Cantilever support frame formwork system and construction method thereof |
| CN106049852A (en) * | 2016-05-24 | 2016-10-26 | 成都市第建筑工程公司 | Tool type aluminum alloy formwork and construction method thereof |
| CN106703407A (en) * | 2017-02-17 | 2017-05-24 | 四川省第六建筑有限公司 | Construction method of double-layered shape steel supporting rack of cantilever beam plate |
-
2019
- 2019-11-25 CN CN201911165174.2A patent/CN110863650A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007016724B3 (en) * | 2007-04-07 | 2008-10-02 | Peri Gmbh | Beam formwork with automatic de-shuttering of the inner shield |
| CN103669562A (en) * | 2013-12-18 | 2014-03-26 | 北京城建六建设集团有限公司 | Cantilever bay window board concrete overall pouring structure and construction method thereof |
| CN105040975A (en) * | 2015-07-15 | 2015-11-11 | 中国建筑第二工程局有限公司 | Support platform for bay window construction and bay window construction method |
| CN106049852A (en) * | 2016-05-24 | 2016-10-26 | 成都市第建筑工程公司 | Tool type aluminum alloy formwork and construction method thereof |
| CN105971274A (en) * | 2016-06-13 | 2016-09-28 | 中国建筑第二工程局有限公司 | Cantilever support frame formwork system and construction method thereof |
| CN106703407A (en) * | 2017-02-17 | 2017-05-24 | 四川省第六建筑有限公司 | Construction method of double-layered shape steel supporting rack of cantilever beam plate |
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Application publication date: 20200306 |