CN110409820B - Formwork supporting device for construction of cantilever structure and construction method thereof - Google Patents
Formwork supporting device for construction of cantilever structure and construction method thereof Download PDFInfo
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- CN110409820B CN110409820B CN201910638981.5A CN201910638981A CN110409820B CN 110409820 B CN110409820 B CN 110409820B CN 201910638981 A CN201910638981 A CN 201910638981A CN 110409820 B CN110409820 B CN 110409820B
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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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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention relates to a formwork supporting device for construction of an overhanging structure and a construction method thereof, wherein the device comprises: one end of each support rod is embedded in the poured main structure, and the other end of each support rod protrudes out of the poured main structure to form a protruding section positioned in the overhanging structure to be constructed; the opposite ends of the connecting rods are fixed on the corresponding protruding extension sections of the supporting rods; the first connecting piece is transversely fixed on the bottom surfaces of the support rod and the connecting rod, and a transverse first slot for the bottom die to be inserted is formed in two opposite sides of the first connecting piece; and the second connecting piece is vertically fixed on the side surface of the supporting rod, and vertical second slots for the side molds to be inserted are formed on two opposite sides of the first connecting piece. The support rod is pre-buried in the main body structure to serve as a subsequent main stress member. The connecting rods and the supporting rods are used as stress members to transversely hoist the formwork, and the formwork is poured to form an overhanging structure.
Description
Technical Field
The invention relates to the field of building construction, in particular to a formwork supporting device for cantilever structure construction and a construction method thereof.
Background
For the construction of a high-altitude cantilever concrete structure, a structural floor slab is arranged below the cantilever structure, and the template support frame has no rooting point.
At present, the conventional method is to set up the formwork support frame from the ground, and the method needs to set up a higher scaffold, so that the safety risk exists. Or a steel platform is arranged on the lower layer of the overhanging structure, and then a template support frame is arranged on the steel platform, but the self weight of the steel platform is larger.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a formwork supporting device for cantilever structure construction and a construction method thereof, and solves the problems that no structural floor slab is arranged below a cantilever structure and no root point is arranged on a formwork supporting frame in the prior art.
The technical scheme for realizing the purpose is as follows:
the invention provides a formwork device for construction of an overhanging structure, which comprises at least one pair of supporting rods, wherein one end of each supporting rod is embedded in a poured main structure, and the other end of each supporting rod protrudes out of the poured main structure to form a protruding section positioned in the overhanging structure to be constructed;
the opposite ends of the connecting rods are fixed on the corresponding protruding sections of the supporting rods;
the first connecting piece is transversely fixed on the bottom surfaces of the support rod and the connecting rod, and a transverse first slot for inserting the bottom die is formed in two opposite sides of the first connecting piece; and
and the second connecting piece is vertically fixed on the side surface of the supporting rod, and vertical second slots for the side molds to be inserted are formed at two opposite sides of the second connecting piece.
The formwork device for cantilever structure construction of the present invention is further improved in that the first connecting member includes:
the first mounting plate is parallel to the supporting rod and the bottom surface of the connecting rod and is fixed by a plurality of first hanging rods which are vertically fixed on the supporting rod and the bottom surface of the connecting rod;
the parallel fixation in a plurality of first fixed plates of first mounting panel bottom surface, first fixed plate with leave between the first mounting panel and establish the interval and form first slot is through inserting the die block and locates first slot and combination bolt wear to establish first fixed plate, the die block with first mounting panel is fixed.
The formwork device for cantilever structure construction of the present invention is further improved in that the second connecting member includes:
the second mounting plate is parallel to the side face of the supporting rod and is fixed by a plurality of second hanging rods transversely fixed on the side face of the supporting rod;
parallel fixation in a plurality of second fixed plates of second mounting panel side, the second fixed plate with leave between the second mounting panel and establish the interval and form the second slot is located through the one end with the side form the die block just the other end of side form is inserted and is located second slot and combination bolt wear to establish the second fixed plate, the side form with the second mounting panel is fixed.
The formwork device for the construction of the cantilever structure is further improved in that one end of the supporting rod is embedded in a main beam of a poured main structure.
The invention also provides a construction method of the formwork supporting device for cantilever structure construction, which comprises the following steps:
providing at least one pair of support rods, and embedding one end of each support rod in the main structure and extending the other end of each support rod out of the main structure to form a protruding section in the overhanging structure to be constructed when the main structure is constructed;
providing a plurality of connecting rods, and correspondingly fixing two opposite ends of the connecting rods to the protruding sections of the pair of oppositely arranged supporting rods;
providing a bottom die and a first connecting piece, wherein first inserting grooves matched with the bottom die are formed in two opposite sides of the first connecting piece, the first connecting piece is transversely fixed on the bottom surfaces of the supporting rod and the connecting rod, the bottom die is transversely arranged at the bottom of the supporting rod and the connecting rod, and the end part of the bottom die is inserted into the corresponding first inserting groove; and
providing a side die and a second connecting piece, wherein second slots matched with the side die are formed in two opposite sides of the second connecting piece, the second connecting piece is vertically fixed on the side surface of the supporting rod, the side die is vertically arranged on the side part of the supporting rod, one end of the side die is supported on the bottom die, and the other end of the side die is inserted into the corresponding second slot;
concrete is poured in the area enclosed by the bottom die and the side die, and the bottom die, the first connecting piece, the side die and the second connecting piece are detached after the cantilever structure is formed.
The construction method of the formwork supporting device for cantilever structure construction is further improved in that the construction method further comprises the step of providing a hanging basket, and the hanging basket is hung on the protruding extension section of the supporting rod to provide an operation platform for installing the bottom formwork and the side formwork.
The formwork supporting device for cantilever structure construction and the construction method thereof have the beneficial effects that:
the support rod is pre-buried in the main body structure to serve as a subsequent main stress member. The connecting rods are erected by utilizing the protruding extension sections of the supporting rods, and the connecting rods and the supporting rods are transversely and longitudinally connected into a net-shaped structure. The connecting rods and the supporting rods are used as stress members to transversely hoist the formwork for pouring on the formwork to form the overhanging structure, so that the formwork can be erected without erecting a formwork upwards layer by layer on the ground or a lower-layer structure, and pouring construction of the overhanging structure is facilitated. The invention solves the problems that no structural floor slab is arranged below the cantilever structure and the template support frame has no root point in the prior art.
Drawings
Fig. 1 is a schematic view of a formwork supporting device for cantilever structure construction according to the present invention.
Fig. 2 is a schematic connection diagram of a support rod and a bottom die of the formwork supporting device for cantilever structure construction according to the present invention.
Fig. 3 to 5 are schematic views illustrating steps of a construction method of a formwork apparatus for cantilever structure construction according to the present invention.
Fig. 6 is a schematic view in the direction of a-a of fig. 3.
Fig. 7 is a schematic view in the direction B-B of fig. 4.
Fig. 8 is a schematic view in the direction of C-C of fig. 7.
Figure 9 is a schematic view of the connection between the support bar and the basket according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Fig. 1 is a schematic view of a formwork supporting device for cantilever structure construction according to the present invention. Fig. 2 is a schematic connection diagram of a support rod and a bottom die of the formwork supporting device for cantilever structure construction according to the present invention. Referring to fig. 1 and 2, a formwork apparatus for cantilever structure construction includes:
at least one pair of support rods 20 which are oppositely arranged, wherein one end of each support rod is embedded in the poured main body structure, and the other end of each support rod protrudes out of the poured main body structure to form a protruding section which is positioned in the overhanging structure to be constructed;
a plurality of connecting rods 30, opposite ends of the connecting rods 30 being fixed to the corresponding protruding sections of the supporting rods 20;
the first connecting pieces 70 are transversely fixed on the bottom surfaces of the support rods 20 and the connecting rods 30, and transverse first slots for the bottom die 40 to be inserted are formed on two opposite sides of each first connecting piece 70; and
and the second connecting piece 80 is vertically fixed on the side surface of the support rod 20, and vertical second slots for the side molds 41 to be inserted are formed at two opposite sides of the second connecting piece 80.
As a preferred embodiment of the formwork supporting apparatus for cantilever structure construction according to the present invention, the first connecting member 70 includes:
a first mounting plate 71 parallel to the bottom surfaces of the support bar 20 and the connecting bar 30, the first mounting plate 71 being fixed by a plurality of first hanger rods 72 vertically fixed to the bottom surfaces of the support bar 20 and the connecting bar 30;
parallel fixation in a plurality of first fixed plates 73 of first mounting panel 71 bottom surface, first fixed plate 73 with leave between the first mounting panel 71 and establish the interval and form first slot is through inserting die block 40 and locating first slot and combination bolt wear to establish first fixed plate 73, die block 40 with first mounting panel 71 fixes.
The top end of the first hanger bar 72 is welded to the bottom surface of the support bar 20. The first mounting plate 71 is a strip plate and is disposed at a middle position of the bottom surface of the support bar 20. The first fixing plate 73 has three holes, and the first fixing plate 73 and the first mounting plate 71 are connected by screwing the first hanger bar 72 into the holes formed in the middle of the first fixing plate 73 with screws, and the first fixing plate 73 and the first mounting plate 71 are parallel to each other with a space therebetween to form first slots.
The bottom die 40 is inserted into the first slot in a pulling manner, and the other two holes formed in the first fixing plate 73 are fixed by bolts.
As a preferred embodiment of the formwork supporting device for cantilever structure construction according to the present invention, the second connecting member 80 includes:
a second mounting plate 81 parallel to the side of the support bar 20, the second mounting plate 81 being fixed by a plurality of second hanger rods 82 transversely fixed to the side of the support bar 20;
parallel fixation in a plurality of second fixed plates 83 of second mounting panel 81 side, second fixed plate 83 with leave between the second mounting panel 81 and establish the interval and form the second slot is located through propping up the one end with side form 41 the die block 40 just the other end of side form 41 is inserted and is located the second slot and combination bolt wear to establish second fixed plate 83, side form 41 with second mounting panel 81 fixes. In this embodiment, the structure of the second connector is similar to the structure and connection of the first connector.
As a preferred embodiment of the formwork device for cantilever structure construction according to the present invention, one end of the support rod 20 is embedded in the main beam 11 of the cast main structure.
Referring to fig. 3 to 5, steps of the construction method of the formwork apparatus for cantilever structure construction according to the present invention are schematically shown. Fig. 6 is a schematic view in the direction of a-a of fig. 3. Fig. 7 is a schematic view in the direction B-B of fig. 5. Fig. 8 is a schematic view in the direction of C-C of fig. 7. Referring to fig. 1 to 8, the present invention further provides a method for constructing a formwork apparatus for use in construction of an overhanging structure, including the steps of:
providing at least one pair of support rods 20, and when the main body structure 10 is constructed, burying one end of each support rod 20 in the main body structure 10 and protruding the other end of each support rod 20 out of the main body structure 10 to form a protruding section in an overhanging structure to be constructed;
providing a plurality of connecting rods 30, and correspondingly fixing the opposite ends of the connecting rods 30 to the protruding sections of the pair of oppositely arranged supporting rods 20;
providing a bottom die 40 and a first connecting piece 70, wherein first slots matched with the bottom die 40 are formed on two opposite sides of the first connecting piece 70, the first connecting piece 70 is transversely fixed on the bottom surfaces of the supporting rod 20 and the connecting rod 30, the bottom die 40 is transversely arranged on the bottom surfaces of the supporting rod 20 and the connecting rod 30, and the end part of the bottom die 40 is inserted into the corresponding first slot; and
providing a side die 41 and a second connecting piece 80, wherein second slots matched with the side die 41 are formed in two opposite sides of the second connecting piece 80, the second connecting piece 80 is vertically fixed on the side surface of the supporting rod 20, the side die 41 is vertically arranged on the side part of the supporting rod 20, one end of the side die 41 is supported on the bottom die 40, and the other end of the side die 41 is inserted into the corresponding second slot;
concrete is poured in the area enclosed by the bottom die 40 and the side die 41, the bottom die 40, the first connecting piece 70, the side die 41 and the second connecting piece 80 are detached after the cantilever structure is formed.
In this embodiment, the main structure 10 is a beam-slab structure, which includes a pair of oppositely disposed main beams 11. During construction, the construction area is divided into an inner construction area a and an outer construction area b according to the boundary of the edge of the lower floor slab. An inner construction area a is constructed on a lower floor slab. Wherein, the lower part of the inner construction area a is correspondingly constructed with a lower floor slab 50, and a column 51 is vertically arranged on the lower floor slab 50. Subsequently, a bent frame can be erected on the lower floor slab 50, and the bent frame is directly used for constructing the part of the cantilever structure 10 located in the inner construction area a. The construction of the cantilever structure 10 is performed in the order of the inner construction zone a and then the outer construction zone b.
In the process of construction in the inner construction area a, a framed bent erected on the lower floor slab 50 is utilized to bind part of the steel reinforcement framework of the main beam 11 positioned in the inner construction area a at the position of the main beam 11 to be constructed and erect a main beam template. Because the outer construction area b temporarily has no operating platform, the reinforcement cage in the outer construction area b is temporarily not bound.
The support rods 20 are arranged at the position of the main beam 11 to be constructed, and the ends of the support rods 20 are flush with the ends of the main beam 11. And pouring to form part of the main beam 11 in the inner construction area a, so that one end of the support rod 20 is embedded and fixed in the main beam 11, and the other end of the support rod 20 protrudes out of the inner construction area a and is positioned in the outer construction area b to form a protruding section. The support rod 20 serves as a main force-bearing member in the later period.
In the present embodiment, the overhanging portion bottom mold 40 and the side mold 41 are both steel molds, and the overhanging portion bottom mold 40 is laterally fixed to the bottom of the support rod 20 and the connecting rod 30 by the first connecting member 70. The side mold 41 is fixed to the side of the support rod 20 by the second connector 80, one end of the side mold 41 is erected on the bottom mold 40, and concrete is cast in a form of a suspended mold.
Referring to figure 9, there is shown a schematic view of the connection of the support pole and basket of the present invention. Referring to fig. 9, before the bottom mold 40 and the side mold 41 are installed, a hanging basket 60 is provided, and the hanging basket 60 is hung on the protruding section of the support rod 20 to provide an operating platform for installing the bottom mold 40 and the side mold 41.
In this embodiment, the edge banding beam 90 is vertically disposed at the end of the overhanging structure 10 located in the outer construction area, and the section steel 91 is embedded in the edge banding beam 90.
In the present embodiment, the support rod 20 and the connecting rod 30 are both i-shaped steel, but the corresponding dimensions may be selected.
The formwork supporting device for cantilever structure construction and the construction method thereof have the beneficial effects that:
the support rod is pre-buried in the main body structure to serve as a subsequent main stress member. The connecting rods are erected by utilizing the protruding extension sections of the supporting rods, and the connecting rods and the supporting rods are transversely and longitudinally connected into a net-shaped structure. The connecting rods and the supporting rods are used as stress members to transversely hoist the formwork for pouring on the formwork to form the overhanging structure, so that the formwork can be erected without erecting a formwork upwards layer by layer on the ground or a lower-layer structure, and pouring construction of the overhanging structure is facilitated. The invention solves the problems that no structural floor slab is arranged below the cantilever structure and the template support frame has no root point in the prior art.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (6)
1. The utility model provides a formwork device of structure construction usefulness of encorbelmenting which characterized in that includes:
at least one pair of support rods which are oppositely arranged, wherein one end of each support rod is embedded in the poured main body structure, and the other end of each support rod protrudes out of the poured main body structure to form a protruding extension section positioned in the overhanging structure to be constructed;
the opposite ends of the connecting rods are fixed on the corresponding protruding sections of the supporting rods;
the first connecting piece is transversely fixed on the bottom surfaces of the support rod and the connecting rod, and a transverse first slot for inserting the bottom die is formed in two opposite sides of the first connecting piece; and
and the second connecting piece is vertically fixed on the side surface of the supporting rod, and vertical second slots for the side molds to be inserted are formed at two opposite sides of the second connecting piece.
2. A formwork apparatus for cantilever structure construction according to claim 1, wherein the first connecting member comprises:
the first mounting plate is parallel to the supporting rod and the bottom surface of the connecting rod and is fixed by a plurality of first hanging rods which are vertically fixed on the supporting rod and the bottom surface of the connecting rod;
the parallel fixation in a plurality of first fixed plates of first mounting panel bottom surface, first fixed plate with leave between the first mounting panel and establish the interval and form first slot is through inserting the die block and locates first slot and combination bolt wear to establish first fixed plate, the die block with first mounting panel is fixed.
3. A formwork apparatus for cantilever structure construction according to claim 2, wherein the second connector comprises:
the second mounting plate is parallel to the side face of the supporting rod and is fixed by a plurality of second hanging rods transversely fixed on the side face of the supporting rod;
parallel fixation in a plurality of second fixed plates of second mounting panel side, the second fixed plate with leave between the second mounting panel and establish the interval and form the second slot is located through the one end with the side form the die block just the other end of side form is inserted and is located second slot and combination bolt wear to establish the second fixed plate, the side form with the second mounting panel is fixed.
4. A formwork apparatus for cantilever structure construction according to claim 1,
one end of the supporting rod is embedded in a main beam of the poured main structure.
5. A construction method of a formwork device for cantilever structure construction is characterized by comprising the following steps:
providing at least one pair of support rods, and embedding one end of each support rod in the main structure and extending the other end of each support rod out of the main structure to form a protruding section in the overhanging structure to be constructed when the main structure is constructed;
providing a plurality of connecting rods, and correspondingly fixing two opposite ends of the connecting rods to the protruding sections of the pair of oppositely arranged supporting rods;
providing a bottom die and a first connecting piece, wherein first inserting grooves matched with the bottom die are formed in two opposite sides of the first connecting piece, the first connecting piece is transversely fixed on the bottom surfaces of the supporting rod and the connecting rod, the bottom die is transversely arranged at the bottom of the supporting rod and the connecting rod, and the end part of the bottom die is inserted into the corresponding first inserting groove; and
providing a side die and a second connecting piece, wherein second slots matched with the side die are formed in two opposite sides of the second connecting piece, the second connecting piece is vertically fixed on the side surface of the supporting rod, the side die is vertically arranged on the side part of the supporting rod, one end of the side die is supported on the bottom die, and the other end of the side die is inserted into the corresponding second slot;
concrete is poured in the area enclosed by the bottom die and the side die, and the bottom die, the first connecting piece, the side die and the second connecting piece are detached after the cantilever structure is formed.
6. A method as claimed in claim 5, further comprising providing a hanging basket, hanging the hanging basket on the protruding section of the supporting rod to provide an operation platform for installing the bottom mold and the side mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638981.5A CN110409820B (en) | 2019-07-16 | 2019-07-16 | Formwork supporting device for construction of cantilever structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910638981.5A CN110409820B (en) | 2019-07-16 | 2019-07-16 | Formwork supporting device for construction of cantilever structure and construction method thereof |
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| Publication Number | Publication Date |
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| CN110409820A CN110409820A (en) | 2019-11-05 |
| CN110409820B true CN110409820B (en) | 2021-06-15 |
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| CN201910638981.5A Active CN110409820B (en) | 2019-07-16 | 2019-07-16 | Formwork supporting device for construction of cantilever structure and construction method thereof |
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| CN115538678B (en) * | 2022-10-25 | 2023-08-15 | 广东科能工程管理有限公司 | Construction method for small side surface platform of large-angle overhanging view platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FI20070334A0 (en) * | 2007-04-27 | 2007-04-27 | Destia Tieliikelaitos | Rack system and method for repairing a concrete bridge edge structure |
| CN202755649U (en) * | 2012-08-07 | 2013-02-27 | 中建三局建设工程股份有限公司 | Rebar mold-supporting frame of cantilever slab |
| CN105971274A (en) * | 2016-06-13 | 2016-09-28 | 中国建筑第二工程局有限公司 | Overhanging support frame formwork system and construction method thereof |
| CN106150088B (en) * | 2016-08-11 | 2019-07-26 | 上海嘉实（集团）有限公司 | Large cantilever beam slab combined type formwork system and construction method |
| 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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