CN115095050A - Construction method for first-floor outer wall of building - Google Patents
Construction method for first-floor outer wall of building Download PDFInfo
- Publication number
- CN115095050A CN115095050A CN202210701092.0A CN202210701092A CN115095050A CN 115095050 A CN115095050 A CN 115095050A CN 202210701092 A CN202210701092 A CN 202210701092A CN 115095050 A CN115095050 A CN 115095050A
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- Prior art keywords
- wall
- plate
- building
- pcf
- floor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000009415 formwork Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- 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
-
- 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
- E04G21/14—Conveying or assembling building elements
Abstract
The invention discloses a construction method of a first-floor outer wall of a building, which comprises the following steps: pre-burying a fixing bolt; binding first-layer wall steel bars; installing a jacking device; installing a PCF board; forming a cast-in-place wall body; forming a first-floor outer wall of the building; removing the relevant parts and cutting off the exposed part of the fixing bolt; and finishing the construction of the first-floor outer wall of the building. The invention effectively solves the problem of difficult PCF plate installation and fixation, and improves the construction speed and quality of the first-floor outer wall of the building.
Description
Technical Field
The invention relates to a construction method of an outer wall of a first floor (first floor) of a building, belonging to the technical field of outer wall construction.
Background
At present, PCF plates are increasingly used in building structure construction due to the characteristics of factory prefabrication, field assembly and the like. The PCF board is also called a prefabricated external wall board and mainly formed by stacking a concrete external board with the thickness of 6cm and a heat insulation board with the thickness of 7 cm. In the construction of the building exterior wall, the PCF plate is often combined with a cast-in-place wall body for application, specifically, the PCF plate is installed after the reinforcement of the building wall body is bound, then an inner template is erected on the inner side of the PCF plate, the PCF plate and the inner template are fixed through wall-penetrating bolts, then concrete is poured to form the cast-in-place wall body, and then the PCF plate and the cast-in-place wall body form the building exterior wall. However, in actual construction, when the PCF plate is installed on the outer wall of the first floor of the building, because the concrete is not poured on the first floor of the building to form the wall, the bottom of the PCF plate is in a suspended state at the moment and has no effective support, and therefore, the method that the PCF plate is only fixed with the inner formwork cannot ensure the quality of the outer wall of the building formed by the subsequent on-site pouring of the wall, and the problem is still the difficulty of the construction of the outer wall of the first floor of the building at present.
Disclosure of Invention
The invention aims to provide a construction method for the first-floor outer wall of a building, which effectively solves the problem that a PCF plate is difficult to install and fix and improves the construction speed and quality of the first-floor outer wall of the building.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method of an outer wall of a first floor of a building is characterized by comprising the following steps:
1) pre-burying a fixing bolt: after the construction of the negative one-storey outer wall of the building is finished, the binding of the fixing bolts is carried out while the first-storey ground floor reinforcing steel bars are bound, then the concrete is poured to form the first-storey ground floor, and the embedding of the fixing bolts is immediately completed, wherein: a part of the fixing bolt is exposed outdoors;
2) binding first-layer wall steel bars: binding the steel bars of the first layer of wall body upwards along the negative layer of outer wall;
3) installing a jacking device: the jacking device is arranged on the exposed part of the embedded fixing bolt in a penetrating way, and then the jacking device is fixed on the outer side of the first floor slab through a fastening nut;
4) mounting a PCF board: the PCF board is lifted to the jacking device through the tower crane, and then is supported by the diagonal brace, so that the installation of the PCF board is completed;
5) forming a cast-in-place wall body: respectively erecting an inner template and an outer template on the inner side and the outer side of the steel bars bound on the first-layer wall body, fixing the inner template, the PCF plate and the outer template by utilizing split bolts, and then pouring concrete to form a cast-in-place wall body on the inner side of the PCF plate;
6) the first-floor outer wall of the building is formed by a PCF plate and a cast-in-place wall body;
7) removing the inner template, the outer template, the jacking device and the inclined strut, and cutting off the exposed part of the fixing bolt;
8) and finishing the construction of the first-floor outer wall of the building.
The invention has the advantages that:
the invention realizes the quick installation and stable support of the PCF plate, solves the problem of difficult installation and fixation of the PCF plate, realizes the quick unhooking of the tower crane, accelerates the construction speed and ensures the construction quality of the first-floor outer wall of the building.
Drawings
FIG. 1 is a schematic diagram of the construction process of the first floor outer wall of the building.
Fig. 2 is a schematic diagram of a step of embedding the fixing bolt.
Fig. 3 is a schematic diagram of the step of binding the first layer of wall reinforcing steel bars.
Fig. 4 is a schematic view of a step of installing the jacking device.
Fig. 5 is a schematic diagram of a step of mounting a PCF board.
Fig. 6 is a schematic left side view of fig. 5.
Fig. 7 is a schematic diagram of a step of forming a cast-in-place wall.
Fig. 8 is a schematic structural view of the jacking device.
Fig. 9 is a schematic right view of fig. 8.
Detailed Description
As shown in fig. 1 to 9, the invention provides a construction method of an outer wall of a first floor of a building, which comprises the following steps:
1) embedded fixing bolts (high-strength bolts) 16: after the construction of the minus one floor outer wall 30 of building, carry out fixing bolt 16's ligature when ligature first floor ground floor 40 reinforcing bar 41, then borrow the template (not shown in the figure) and pour concrete and form first floor ground floor 40, accomplish fixing bolt 16's pre-buried immediately, fixing bolt 16 forms an organic whole with first floor ground floor 40, wherein: a part of the fixing bolt 16 is exposed to the outside of the room, as shown in fig. 2;
2) binding the first layer of wall steel bars 51: after the first floor 40 is formed, binding the steel bars 51 of the first wall upward along the negative outer wall 30, as shown in fig. 3;
3) installing the jacking device 10: the jacking device 10 is arranged on the exposed part of the pre-embedded fixing bolt 16 in a penetrating manner, then the jacking device 10 is fixed on the outer side of the first floor 40 through the fastening nut 17, as shown in fig. 4, namely, after the jacking device 10 is arranged on the exposed part of the fixing bolt 16 in a penetrating manner, the fastening nut 17 is screwed on the fixing bolt 16, so that the jacking device 10 is locked on the outer side of the first floor 40 through the fastening nut 17;
4) mounting the PCF board 20: the PCF board 20 is lifted to the jacking device 10 by a tower crane, and then the PCF board 20 is supported by the inclined strut 24, so that the installation of the PCF board 20 is completed, as shown in FIG. 5;
5) forming a cast-in-place wall body: an inner formwork 61 and an outer formwork 62 are respectively erected on the inner side and the outer side of a steel bar 51 bound on a first-layer wall, the inner formwork 61, the PCF plate 20 and the outer formwork 62 are fixed by using a split bolt 63 (the split bolt 63 is schematically shown in FIG. 7), a stable casting formwork system is formed, then concrete is cast, so that a cast-in-place wall 50 is formed on the inner side of the PCF plate 20, as shown in FIG. 7, wherein: the outer template 62 is supported below the PCF board 20;
6) the first-floor outer wall of the building formed by the PCF plate 20 and the cast-in-place wall 50 (as shown in FIG. 7);
7) when the strength of the concrete reaches the standard, the split bolts 63, the inner template 61, the outer template 62, the jacking device 10 and the inclined strut 24 are removed, and the exposed parts of the fixed bolts 16 are cut off;
8) and finishing the construction of the first-floor outer wall of the building.
In practice, step 2) is performed by binding the steel bars 51 of the first layer of wall body with the steel bars 31 exposed upwards of the negative outer wall 30. Here, the first layer of wall reinforcements 51 are bound to prevent the offset phenomenon from occurring when the PCF board 20 is installed.
In step 3), each jacking device 10 is fixed by two pre-embedded fixing bolts 16.
As shown in fig. 8 and 9, in the present invention, the jacking device 10 includes a fixed seat 11 composed of an inner side plate 111, an outer side plate 112, a top plate 113 and a bottom plate 114, the fixed seat 11 is in a square tube shape or a square vertical section and is open towards two horizontal ends, wherein: two leveling screws 12 are movably arranged on a top plate 113 of the fixed seat 11 in a penetrating manner, namely, two through holes (not marked in the figure) are formed in the top plate 113, and the two leveling screws 12 vertically extend out of the top plate 113 and are connected with a supporting plate 13 for forming a jacking plane; an upper locking nut 14 and a lower locking nut 15 are movably screwed on each leveling screw 12, and the upper locking nut 14 and the lower locking nut 15 are respectively positioned outside and inside the fixed seat 11; two pairs of through holes (not shown) are oppositely formed on the inner side plate 111 and the outer side plate 112, and each pair of through holes is used for the exposed part of the fixing bolt 16 (part of the screw rod of the fixing bolt 16 is exposed) to penetrate.
In practical design, the fixing base 11 is formed by welding the inner plate 111, the outer plate 112, the top plate 113 and the bottom plate 114 made of steel, or the fixing base 11 is directly made of square steel pipe. Here, since one side plate faces the inside of the room and the other side plate faces the outside of the room after the jacking device 10 is mounted, the two side plates are defined as an inner plate 111 and an outer plate 112, respectively. The pallet 13 is also made of steel.
As shown in fig. 8, two pairs of through holes on the fixing base 11 are located at the same height position, and in addition, two leveling screws 12 are arranged along the length direction of the fixing base 11.
When the step 3) is implemented, the heights of the two leveling screws 12 on the jacking device 10 are adjusted according to the installation height of the PCF plate 20, so that the height of the supporting plate 13 is adjusted.
In practical implementation, after the height of the leveling screw 12 is adjusted to a proper position, the upper locking nut 14 and the lower locking nut 15 are screwed to make the upper locking nut 14 and the lower locking nut 15 respectively abut against the outer surface and the inner surface of the fixing seat 11, so as to realize the height locking of the leveling screw 12.
The step 4) specifically comprises the following steps: the PCF plate 20 is lifted to the top support device 10 by the tower crane and then supported by the supporting plate 13, the PCF plate 20 abuts against the outer side of the steel bars 51 bound on the first-layer wall body, the connecting piece 23 on the PCF plate 20 penetrates through the steel bars 51 of the first-layer wall body and then is connected with the upper end of the inclined strut 24, the lower end of the inclined strut 24 is connected with the fixing piece 25 pre-embedded on the first-layer ground floor 40, so that the inclined strut 24 supports the PCF plate 20, and at the moment, the tower crane can be unhooked to perform other hoisting operations.
In practical implementation, after the PCF board 20 is installed, the flatness of the supporting plate 13 should be adjusted by adjusting the heights of the two leveling screws 12 to adjust the flatness of the PCF board 20, and then the perpendicularity of the PCF board 20 is adjusted by adjusting the inclined struts 24 to ensure the installation quality of the PCF board 20.
In the invention, the installation and adjustment of the jacking device 10 are very simple, convenient and easy to operate, the firmness after installation is high, the PCF plate 20 can be stably supported, and the flatness of the PCF plate 20 can be effectively ensured by flexibly adjusting the leveling screw 12 on the PCF plate. In addition, the jacking device 10 is simple, small and reliable in structure, can be manufactured by adopting common parts on a construction site, is high in practicability, can be recycled, and is low in cost.
In the present invention, each PCF board 20 is preferably supported by two jacking devices 10, as shown in fig. 6.
The PCF panel 20 of the present invention is also called prefabricated external wall panel, and is generally formed by stacking a concrete outer sheet 21 having a thickness of 6cm and an insulation board 22 having a thickness of 7cm, wherein the outer sheet 21 faces outwards and the insulation board 22 faces inwards, as will be understood with reference to fig. 7.
The invention has the advantages that:
the invention realizes the quick installation and stable support of the PCF plate, solves the problem of difficult installation and fixation of the PCF plate, realizes the quick unhooking of the tower crane, accelerates the construction speed and ensures the construction quality of the first-floor outer wall of the building.
The above description is of the preferred embodiment of the present invention and the technical principle applied thereto, and it will be apparent to those skilled in the art that any equivalent changes, simple substitutions and other obvious changes based on the technical solution of the present invention can be made without departing from the spirit and scope of the present invention.
Claims (10)
1. A construction method for the first floor outer wall of a building is characterized by comprising the following steps:
1) pre-burying a fixing bolt: after the construction of the negative one-storey outer wall of the building is finished, the binding of the fixing bolts is carried out while the first-storey ground floor reinforcing steel bars are bound, then the concrete is poured to form the first-storey ground floor, and the embedding of the fixing bolts is immediately completed, wherein: a part of the fixing bolt is exposed towards the outdoor;
2) binding first-layer wall steel bars: binding the steel bars of the first layer of wall body upwards along the negative layer of outer wall;
3) installing a jacking device: the jacking device is arranged on the exposed part of the embedded fixing bolt in a penetrating way, and then the jacking device is fixed on the outer side of the first floor slab through a fastening nut;
4) installing a PCF board: the PCF board is lifted to the jacking device through the tower crane, and then is supported by the diagonal brace, so that the installation of the PCF board is completed;
5) forming a cast-in-place wall body: respectively erecting an inner template and an outer template on the inner side and the outer side of the steel bars bound on the first-layer wall body, fixing the inner template, the PCF plate and the outer template by utilizing split bolts, and then pouring concrete to form a cast-in-place wall body on the inner side of the PCF plate;
6) the first-floor outer wall of the building is formed by a PCF plate and a cast-in-place wall body;
7) removing the inner template, the outer template, the jacking device and the inclined strut, and cutting off the exposed part of the fixing bolt;
8) and finishing the construction of the first-floor outer wall of the building.
2. The construction method of the first floor outer wall of the building as claimed in claim 1, wherein:
in the step 2), the reinforcing steel bars of the first layer of wall body are bound with the reinforcing steel bars exposed upwards of the negative layer of outer wall.
3. The construction method of the first floor outer wall of the building as recited in claim 1, wherein:
in the step 3), each jacking device is fixed through two pre-embedded fixing bolts.
4. The construction method of the first floor outer wall of the building as claimed in claim 1, wherein:
the top holds in the palm the fixing base that the device includes by interior plate, outer panel, roof and bottom plate constitution, wherein: two leveling screws movably penetrate through a top plate of the fixing seat, and the two leveling screws vertically extend out of the top plate and are connected with a supporting plate for forming a jacking plane; an upper locking nut and a lower locking nut are movably screwed on each leveling screw rod, and the upper locking nut and the lower locking nut are respectively positioned outside and inside the fixed seat; two pairs of through holes are oppositely formed in the inner side plate and the outer side plate, and each pair of through holes are used for the exposed part of the fixing bolt to penetrate through.
5. The construction method of the first floor outer wall of the building as claimed in claim 4, wherein:
the two pairs of through holes on the fixed seat are positioned at the same height position.
6. The construction method of the first floor outer wall of the building as claimed in claim 4, wherein:
in the step 3), the heights of the two leveling screws on the jacking device are adjusted according to the installation height of the PCF plate, so that the height of the supporting plate is adjusted.
7. The construction method of the first floor outer wall of the building as claimed in claim 4, wherein:
in the step 4): the PCF board is hung to the top support device by the tower crane and is supported by the supporting plate, the PCF board is abutted against the outer side of the steel bars bound by the first-layer wall body, the connecting piece on the PCF board penetrates through the steel bars of the first-layer wall body and then is connected with the upper end of the inclined strut, and the lower end of the inclined strut is connected with the fixing piece pre-buried on the first-layer ground floor slab to realize that the inclined strut is used for supporting the PCF board.
8. The construction method of the first floor outer wall of the building as claimed in claim 7, wherein:
after the PCF plate is installed, the flatness of the supporting plate is adjusted by adjusting the heights of the two leveling screws so as to adjust the flatness of the PCF plate, and then the perpendicularity of the PCF plate is adjusted by adjusting the inclined strut.
9. The construction method of the first floor outer wall of the building as claimed in claim 8, wherein:
each PCF plate is supported and supported by two jacking devices.
10. The construction method of the first floor outer wall of the building as claimed in claim 1, wherein:
the PCF plate is formed by stacking a concrete outer leaf plate and an insulation plate, wherein the outer leaf plate faces outwards, and the insulation plate faces inwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210701092.0A CN115095050A (en) | 2022-06-20 | 2022-06-20 | Construction method for first-floor outer wall of building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210701092.0A CN115095050A (en) | 2022-06-20 | 2022-06-20 | Construction method for first-floor outer wall of building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115095050A true CN115095050A (en) | 2022-09-23 |
Family
ID=83291957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210701092.0A Pending CN115095050A (en) | 2022-06-20 | 2022-06-20 | Construction method for first-floor outer wall of building |
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| Country | Link |
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| CN (1) | CN115095050A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204001699U (en) * | 2014-08-13 | 2014-12-10 | 梁媛 | Building exterior wall heat preserving integrated template braced structures |
| CN204940863U (en) * | 2015-09-07 | 2016-01-06 | 中铁建工集团有限公司 | External wall construction outside large form bracket |
| US20180282998A1 (en) * | 2017-03-29 | 2018-10-04 | Johns Manville | Thermal insulation properties of polyiso foams |
| CN208267174U (en) * | 2018-04-26 | 2018-12-21 | 江苏中鹰国际装配式建筑科技产业园有限公司 | A kind of overlaid plate type heat-preservation shear wall by squeezing sleeve connection |
| CN110485707A (en) * | 2019-07-26 | 2019-11-22 | 中国华冶科工集团有限公司 | Wall column formwork blocks levelling device and its construction method |
| CN212957621U (en) * | 2020-08-20 | 2021-04-13 | 浙江国泰建设集团有限公司 | Jacking with socket |
| CN216476308U (en) * | 2021-10-13 | 2022-05-10 | 北京市第三建筑工程有限公司 | Vertical adjusting structure of template system |
-
2022
- 2022-06-20 CN CN202210701092.0A patent/CN115095050A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204001699U (en) * | 2014-08-13 | 2014-12-10 | 梁媛 | Building exterior wall heat preserving integrated template braced structures |
| CN204940863U (en) * | 2015-09-07 | 2016-01-06 | 中铁建工集团有限公司 | External wall construction outside large form bracket |
| US20180282998A1 (en) * | 2017-03-29 | 2018-10-04 | Johns Manville | Thermal insulation properties of polyiso foams |
| CN208267174U (en) * | 2018-04-26 | 2018-12-21 | 江苏中鹰国际装配式建筑科技产业园有限公司 | A kind of overlaid plate type heat-preservation shear wall by squeezing sleeve connection |
| CN110485707A (en) * | 2019-07-26 | 2019-11-22 | 中国华冶科工集团有限公司 | Wall column formwork blocks levelling device and its construction method |
| CN212957621U (en) * | 2020-08-20 | 2021-04-13 | 浙江国泰建设集团有限公司 | Jacking with socket |
| CN216476308U (en) * | 2021-10-13 | 2022-05-10 | 北京市第三建筑工程有限公司 | Vertical adjusting structure of template system |
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