CN113914476B - Construction method of long-size overhanging floating plate - Google Patents
Construction method of long-size overhanging floating plate Download PDFInfo
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- CN113914476B CN113914476B CN202111215798.8A CN202111215798A CN113914476B CN 113914476 B CN113914476 B CN 113914476B CN 202111215798 A CN202111215798 A CN 202111215798A CN 113914476 B CN113914476 B CN 113914476B
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- 238000010276 construction Methods 0.000 title claims abstract description 53
- 238000009415 formwork Methods 0.000 claims abstract description 35
- 238000009435 building construction Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 239000006260 foam Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 4
- 239000000789 fastener Substances 0.000 claims description 3
- 230000001681 protective Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 210000001503 Joints Anatomy 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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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
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
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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
- E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
- E04G13/066—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for overhangs
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/001—Corner fastening or connecting means for forming or stiffening elements
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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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
Abstract
The invention relates to a construction method of a long-size overhanging floating plate, which relates to the technical field of building construction and comprises four steps of positioning, building a support system, pouring and dismantling the support system, wherein the pouring step is divided into two steps of pouring the overhanging floating plate, firstly pouring a reversed beam and a wallboard, pouring the floating plate after the reversed beam and the wallboard reach 70% strength in initial setting, and pouring concrete from outside to inside when pouring the floating plate. This application has shares the effect of wafing board weight through anti-roof beam and wallboard, can ensure formwork support frame's stability, has reduced formwork support frame's load requirement, has reduced the degree of difficulty, cost and the time limit for a project that the board construction of wafing is encorbelmented to long dimension.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a long overhanging floating plate.
Background
At present, with the rapid development of economic construction and urbanization, high-rise or super high-rise buildings with different shapes are rapidly pulled out of large and medium cities, and in order to expand the building personality and display the variety of shapes, a high altitude large cantilever method is often adopted to cantilever a roof out of a building plane to form a long size cantilever floating plate, so that the shape becomes a symbolic landscape line of the urban building. In the design, the height of the overhanging part from the ground is usually more than 40m, and the overhanging length of the overhanging part is large, so that the building is more beautiful, three-dimensional and vigorous in male posture. Meanwhile, the individual designs also bring various difficulties for the construction of buildings, and the construction span is large, the height is high, the load is large, and the difficulty is high.
For the long-size overhanging floating plate, a floor type full scaffold is usually erected from the ground to serve as a support frame system of a pouring template, then the pouring is carried out by adopting a one-step pouring forming method, the gravity of the overhanging floating plate is borne by the support frame system, the support frame system is large in stress, and the building difficulty is high.
Aiming at the related technologies, the inventor thinks that the defects that the gravity of the long overhanging floating plate is completely born by the support frame system when the long overhanging floating plate is constructed, the support frame system is stressed greatly, and the building difficulty is high exist.
Disclosure of Invention
In order to improve long-size board that wafts of encorbelmenting when the construction, gravity is whole to be born by the support frame system, and support frame system atress is big, builds the defect that the degree of difficulty is high, this application provides a long-size board construction method that wafts of encorbelmenting.
The application provides a long size board construction method that wafts of encorbelmenting adopts following technical scheme:
the construction method of the long-size cantilever floating plate comprises the following steps:
s1, positioning: determining the size and the position of the overhanging floating plate according to a structure construction drawing and a building construction drawing, and performing plane paying-off and elevation reading;
s2, building a support system: firstly, pouring top-layer wall column concrete, then building a template support frame, wherein the template support frame takes a top-layer wall column and a second-layer wall column as support stress points, then installing a floating plate template, a reverse beam template and a wallboard template on the template support frame, the reverse beam template is installed on an outer edge ring of the floating plate template, two ends of the wallboard template are respectively connected with the reverse beam template and a non-outward-picking roof template, and finally finishing the binding of reinforcing steel bars on the floating plate template, the reverse beam template and the wallboard template;
s3, pouring: the overhanging floating plate is poured in two times, the reversed beam and the wall plate are poured firstly, the floating plate is poured after the initial setting of the reversed beam and the wall plate reaches 70 percent of strength, and concrete is poured from outside to inside when the floating plate is poured;
s4, dismantling the support system: and after the strength of the poured floating plate reaches the design requirement, dismantling the floating plate template, the reversed beam template, the wallboard template and the template support frame.
By adopting the technical scheme, the erected template support frame takes the top-layer wall column and the secondary top-layer wall column as supporting stress points, and does not take the ground as a supporting stress point, so that the erecting difficulty of the template support frame can be greatly reduced, and then the counter beam and the wallboard are poured firstly, and the counter beam and the wallboard are poured after being initially set and then the floating plate is poured, so that the counter beam and the wallboard bear the gravity of a part of the floating plate, the stress of the template support frame is reduced, and the template support frame is stable and firm; by adopting the construction method, the erection difficulty of the template support frame can be reduced, the construction period for erecting the template support frame is greatly shortened, the stability of the template support frame can be ensured by a construction mode of sharing the weight of the floating plate by the reversed beam and the wallboard, the load requirement of the template support frame is reduced, and the difficulty, the cost and the construction period of long-size overhanging floating plate construction are reduced.
Preferably, before the formwork support frame is erected, the non-overhanging formwork support frame system and the non-overhanging roof formwork are erected, and the formwork support frame is connected with the non-overhanging formwork support frame system firmly in a pulling mode through the steel pipe.
By adopting the technical scheme, the steel pipe and the non-cantilever formwork support system are firmly connected in a pulling mode, so that the formwork support frame is firmer and more stable, and the supporting force of the formwork support frame is enhanced.
Preferably, when the inverted beam and the wallboard template are erected, the side die and the bottom die of the inverted beam template are supported by a foam plastic plate, the side die and the bottom die of the wallboard template are supported by the foam plastic plate, and after the inverted beam and the wallboard are initially set, the foam plastic plate is completely removed and then the floating plate is poured.
Through adopting above-mentioned technical scheme, the convenience is demolishd to the foamed plastic board, demolishs easily after anti-roof beam and wallboard initial set, and the structural damage to the anti-roof beam is little when demolising.
Preferably, the formwork support frame comprises an inclined support, a horizontal support and a vertical support, the horizontal support and the vertical support are erected firstly, the inclined support is erected again, the inclined support comprises an outer frame and an inner frame, the inner frame is welded with pre-buried short steel bars in the top layer wall column, the outer frame is welded with the pre-buried short steel bars in the secondary top layer wall column, the horizontal support is connected with the top layer wall column and the secondary top layer wall column in a column holding mode, and the horizontal support, the inclined support and the vertical support are connected through fasteners.
Through adopting above-mentioned technical scheme, through the braced frame that forms of braced frame, horizontal stand and vertical support interconnect, the braced frame is firm with pre-buried short steel bar welding, and the wall post is connected through the mode of embracing the post to the horizontal stand, and the homoenergetic that all can provide stable holding power, and vertical leg joint braced frame and horizontal stand of rethread constitute stable triangle-shaped bearing structure, and it is stable firm to support.
Preferably, after the horizontal stand was set up, before the bearing diagonal was set up, increase the bearing diagonal and set up construction operation protection frame to lay the scaffold board in floor operation elevation position, the protection frame is non-main atress support body, and constructor operates when only supplying to choose outward board, roofing structure construction uses, only considers scaffold board and constructor load in the design.
Through adopting above-mentioned technical scheme, the protection frame is used for protecting constructor's personal safety, and the scaffold board is used for supplying constructor to fall the foot walking, increases the security and the convenience of operation.
Preferably, before the inclined support is erected, safety nets are arranged on the outer side of the protection frame and below the operation surface respectively, inclined pull rods are arranged between the inner row rods and the outer cantilever horizontal rods of the protection frame, and the protection frame and the non-outer cantilever formwork support system are connected firmly in a pulling mode through steel pipes.
By adopting the technical scheme, the safety net can prevent most falling objects in the construction process from falling, so that the probability of falling objects at high altitude is reduced, and the occurrence probability of safety accidents is reduced; the inclined pull rod and the steel pipe ensure that the protection frame is firmer and more stable.
Preferably, short steel bars are pre-buried in the floor slabs of the top layer and the secondary top layer respectively so as to be in pull connection with the floor slab main body, and if the short steel bars cannot be pre-buried, a mode of burying after punching is adopted.
Through adopting above-mentioned technical scheme, draw protection frame and floor main part through pre-buried short steel bar and connect, with protection frame and floor firm in connection for protection frame atress is stable, satisfies the construction requirement.
Preferably, before pouring the reverse beam and the wallboard, the floating plate template, the reverse beam template and the wallboard template are respectively subjected to preloading, and whether the strength, the rigidity and the stability of the floating plate template, the reverse beam template and the wallboard template meet the requirements is checked.
Through adopting above-mentioned technical scheme, carry out the preloading to wafing board template, anti-roof beam template and wallboard template, can inspect its intensity, rigidity and stability before pouring, if find its intensity, rigidity and stability unsatisfied requirement, should in time improve, the emergence of incident when avoiding pouring.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the construction method can reduce the erection difficulty of the template support frame, greatly shortens the erection period of the template support frame, ensures the stability of the template support frame through a construction mode that the inverted beam and the wallboard share the weight of the floating plate, reduces the load requirement of the template support frame, and reduces the difficulty, cost and construction period of long-size cantilever floating plate construction;
2. through the inclined support, horizontal stand and vertical stand interconnect form the formwork support frame, the inclined support is firm with pre-buried short reinforcement welding, and the wall post is connected through the mode of embracing the post to the horizontal stand, and the homoenergetic that all can provide stable holding power, and the inclined support of vertical leg joint of rethread and horizontal stand constitute stable triangle-shaped bearing structure, and it is stable firm to support, and the formwork support frame need not to set up from ground, greatly reduced the cost of setting up of formwork support frame.
Drawings
Fig. 1 is a flowchart of a construction method of a long cantilevered floating slab according to an embodiment of the present application.
Fig. 2 is a sectional view of the suspended flag in the embodiment of the present application.
Fig. 3 is a construction effect diagram of a construction method of a long cantilevered floating slab according to an embodiment of the present application.
Description of the reference numerals: 1. a float plate; 2. a reversed beam; 3. a wallboard; 4. a roof; 5. a top layer; 6. a secondary top layer; 7. a template support frame.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a construction method of a long-size overhanging floating plate. Referring to fig. 1, 2 and 3, a construction method of a long-sized overhanging floating plate comprises the following steps:
s1, positioning: according to the structure construction drawing and the building construction drawing, the size and the position of the cantilever floating plate are determined, plane paying-off and elevation reading and measuring are carried out, and the ground processing part of the steel bar and the template of the cantilever floating plate is completed.
S2, setting up a support system: the method comprises the following steps of pouring top layer 5 wall column concrete, then completing the construction of a non-overhanging formwork support system and a non-overhanging roof 4 formwork, then erecting a formwork support frame 7 of an overhanging floating plate, wherein the formwork support frame 7 takes a top layer 5 wall column and a second top layer 6 wall column as supporting stress points, the formwork support frame 7 is firmly connected with the non-overhanging formwork support system through a steel pipe in a pulling way, the supporting force of the formwork support frame 7 is enhanced, the load of the formwork support frame 7 is increased, and the second top layer 6 is the next layer of the top layer 5; install on template support frame 7 and waft the board template, anti-beam template and wallboard template, anti-beam template installation is in the outside circle of wafting the board template, anti-beam template and 4 templates on the roofing of non-exterior cantilever are connected respectively to the both ends of wallboard template, the bottom of the side form of anti-beam template and wallboard template all adopts the foamed plastic board to support, accomplish at last and waft the board template, reinforcement on anti-beam template and the wallboard template, carry out the pile load pre-compaction to wafting the board template respectively, anti-beam template and wallboard template, inspect its intensity, whether rigidity and stability meet the demands, if do not meet the demands then improve so that it satisfies the requirement of intensity, rigidity and stability.
S3, pouring: before pouring, watering and wetting the floating plate templates, the reversed beam templates and the wallboard templates, ensuring that no water is accumulated in each template, then coating template isolating agents on the floating plate templates, the reversed beam templates and the wallboard templates, wherein the coated template isolating agents cannot stain joints of steel bars and concrete, when pouring, the floating plates are poured for two times, firstly pouring the reversed beams 2 and the wallboards 3, arranging a plurality of wallboards 3 at intervals, pouring the reversed beams 2 and the wallboards 3 together to form an integral body, extending the wallboards 3 into the non-overhanging roof 4, removing the foam plastic plates after the reversed beams 2 and the wallboards 3 are initially set to 70% strength, then pouring the floating plates 1, and when pouring the floating plates 1, pouring the concrete from outside to inside, improving the pouring safety and improving the pouring quality.
S4, dismantling the support system: and after the strength of the poured floating plate 1 reaches the design requirement, dismantling the floating plate template, the reversed beam template, the wallboard template and the template support frame 7.
Referring to fig. 3, the formwork support frame 7 includes an inclined bracket, a horizontal bracket and a vertical bracket, the inclined bracket, the horizontal bracket and the vertical bracket form a stable triangular support structure, the horizontal bracket and the vertical bracket are firstly erected, and then the inclined bracket is added to erect the construction operation protection frame. And then, erecting an inclined support, wherein the inclined support comprises an outer frame and an inner frame, the inner frame is welded with the pre-buried short steel bars in the 5 wall columns on the top layer, the outer frame is welded with the pre-buried short steel bars in the 6 wall columns on the second top layer, the horizontal support is connected with the 5 wall columns on the top layer and the 6 wall columns on the second top layer in a column holding manner, the horizontal support is at least connected with the two rows of wall columns in a column holding manner, and the horizontal support, the inclined support and the vertical support are connected through fasteners. If no short steel bars are embedded in the top 5 wall columns or the second top 6 wall columns, the steel bars need to be embedded in a punching and embedding mode, and then the steel bars are welded with the inclined support.
And (3) respectively embedding short steel bars in the floor slabs of the top layer 5 and the secondary top layer 6, embedding the steel bars in a mode of embedding after punching, and welding the embedded steel bars by the protective frame to be connected with the floor slab main body in a pulling mode. Need set up oblique pull rod in the protection frame between the bent bar and the outer horizon bar of choosing when the protection frame is set up, utilize the steel pipe with the protection frame and choose template support system outside with and draw to connect firmly to set up the safety net in the protection frame outside and operating surface below, lay the scaffold board in floor operation elevation position, the protection frame is the main atress support body of non-, constructor uses when only supplying to choose board 1, the 4 structure construction of roofing outward, only considers scaffold board and constructor load in the design.
And S3, self-monitoring the construction process by adopting a level meter and a theodolite in the pouring process, wherein the main monitoring items are support settlement and horizontal displacement and settlement observation of the stability of the supporting ground. The early warning value of the support settlement displacement is 8mm, and the allowable value of the settlement displacement is 10mm; the early warning value of the horizontal displacement of the bracket is 5mm, and the allowable value of the horizontal displacement is 8mm. The concrete pouring process is strictly carried out according to the concrete pouring construction scheme, an illuminating lamp is installed below the support, under the supervision of a safety worker, a carpenter is dispatched to patrol on the floor slabs of the top layer 5 and the second top layer 6, and pouring is stopped and evacuation is carried out immediately when a problem is found. And if the support is settled and the displacement reaches the alarm value, the construction is immediately stopped.
In the step S4, the demolished templates and supports fall on the temporary protection support firstly, the side molds of the reversed beam templates and the wallboard templates are demolished firstly, the strength of the mixed soil during demolition of the side molds ensures that the surfaces and edges and corners of the side molds are not damaged, then the bottom molds of the floating plate templates are demolished, finally the bottom molds of the reversed beam templates and the wallboard templates are demolished, the demolition is carried out in a segmented and separated mode, the plates are strictly forbidden to be pried or pulled and dismantled in a segmented mode, the demolition of the templates cannot form impact load on floors, and the demolished templates and supports need to be stacked dispersedly and cleared in time. When the template is disassembled, the first support is disassembled, the second support is disassembled, the non-bearing template is disassembled first, the bearing template is disassembled later, the disassembly is carried out from top to bottom, and the sledge hammer and the crowbar are forbidden to be used. The removed formworks can not be thrown away and should be stacked according to a specified place, and the stacking of the temporarily removed formworks on the operation layer can not exceed 3 layers. If the form removal stops in the midway, the loose, suspended and floating form or the support which is removed should be supported firmly or connected firmly temporarily, and the movable part must be removed at one time. And after the formwork is removed, removing the formwork support frame 7.
The implementation principle of the construction method of the long-size overhanging floating plate in the embodiment of the application is as follows: the erected template support frame 7 takes the top layer 5 wall column and the second top layer 6 wall column as supporting stress points, and does not take the ground as the supporting stress points, so that the erection difficulty of the template support frame 7 can be greatly reduced, then the counter beam 2 and the wallboard 3 are poured firstly, and after the counter beam 2 and the wallboard 3 are initially set, the pouring method of the floating plate 1 is poured, so that the counter beam 2 and the wallboard 3 bear the gravity of a part of the floating plate 1, the stress of the template support frame 7 is reduced, the template support frame 7 is stable and firm, and the concrete is poured from outside to inside so that the gravity of the poured concrete acts on the counter beam 2, and the loads of the floating plate template and the template support frame 7 are reduced; the stability of the formwork support frame 7 can be ensured by the construction mode of sharing the weight of the floating plate 1 through the reversed beam 2 and the wallboard 3, the load requirement of the formwork support frame 7 is reduced, and the difficulty, the cost and the construction period of the long-size overhanging floating plate construction are reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A construction method of a long-size overhanging floating plate is characterized by comprising the following steps:
s1, positioning: determining the size and the position of the cantilever floating plate according to the structure construction drawing and the building construction drawing, and performing plane paying-off and elevation reading and measuring;
s2, building a support system: pouring top layer (5) wall column concrete, then building a template support frame (7), wherein the template support frame (7) takes a top layer (5) wall column and a second top layer (6) wall column as supporting stress points, then installing a floating plate template, a reverse beam template and a wallboard template on the template support frame (7), installing the reverse beam template on an outer edge ring of the floating plate template, respectively connecting the reverse beam template with a non-exterior cantilever roof (4) template at two ends of the wallboard template, and finally completing steel bar binding on the floating plate template, the reverse beam template and the wallboard template;
s3, pouring: the overhanging floating plate is poured for two times, firstly, the reversed beam (2) and the wallboard (3) are poured, after the reversed beam (2) and the wallboard (3) are initially set to 70% of strength, the floating plate (1) is poured, and when the floating plate (1) is poured, concrete is poured from outside to inside;
s4, dismantling the support system: and after the strength of the poured floating plate (1) reaches the design requirement, dismantling the floating plate template, the reversed beam template, the wallboard template and the template support frame (7).
2. The construction method of the long-size overhanging floating plate according to claim 1, characterized in that: before the formwork support frame (7) is erected, the erection of the non-cantilever formwork support frame system and the formwork of the non-cantilever roof (4) is completed, and the formwork support frame (7) is firmly connected with the non-cantilever formwork support frame system through a steel pipe in a pulling mode.
3. The construction method of the long-size overhanging floating plate according to claim 1, characterized in that: when the inverted beam (2) and the wallboard template are erected, the side die and the bottom die of the inverted beam template are supported by a foam plastic plate, the side die and the bottom die of the wallboard template are supported by the foam plastic plate, and after the inverted beam (2) and the wallboard (3) are initially set, the foam plastic plate is removed completely and then the floating plate (1) is poured.
4. The construction method of the long-size overhanging floating plate according to claim 1, characterized in that: formwork support frame (7) includes the down tube, horizontal stand and vertical support, set up horizontal stand and vertical support earlier, set up the down tube again, the down tube includes outrigger and inner tower, pre-buried short steel bar welding in inner tower and top layer (5) wall post, pre-buried short steel bar welding in outrigger and inferior top layer (6) wall post, top layer (5) wall post and inferior top layer (6) wall post are connected through the mode of embracing the post to the horizontal stand, be connected through the fastener between down tube and the vertical support.
5. The construction method of the long-size overhanging floating plate according to claim 4, characterized in that: after the horizontal stand was set up, before the bearing diagonal was set up, increased the bearing diagonal and set up construction operation protection frame to lay the scaffold board in floor operation elevation position, the protection frame is non main atress support body, and constructor operates when only supplying to choose outward board (1), roofing (4) structure construction and uses, only considers scaffold board and constructor load in the design.
6. The construction method of the long-size overhanging floating plate according to claim 5, characterized in that: before the inclined support is erected, safety nets are arranged on the outer side of the protection frame and below the operation surface respectively, diagonal draw bars are arranged between the row rods and the cantilever horizontal rods in the protection frame, and the protection frame and the non-cantilever formwork support system are firmly connected in a pulling mode through steel pipes.
7. The construction method of the long-size overhanging floating plate according to claim 6, characterized in that: and respectively embedding short steel bars in the floor slabs of the top layer (5) and the secondary top layer (6) so as to be ready for the pull connection of the protective frame and the floor slab main body, and if the short steel bars cannot be embedded, adopting a mode of embedding after punching.
8. The construction method of the long-size overhanging floating plate according to claim 1, characterized in that: before pouring the reverse beam (2) and the wallboard (3), respectively carrying out preloading on the floating plate template, the reverse beam template and the wallboard template, and checking whether the strength, the rigidity and the stability of the floating plate template, the reverse beam template and the wallboard template meet the requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111215798.8A CN113914476B (en) | 2021-10-19 | 2021-10-19 | Construction method of long-size overhanging floating plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111215798.8A CN113914476B (en) | 2021-10-19 | 2021-10-19 | Construction method of long-size overhanging floating plate |
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| CN113914476A CN113914476A (en) | 2022-01-11 |
| CN113914476B true CN113914476B (en) | 2022-10-04 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113914476A (en) | 2022-01-11 |
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