CN114790818A - Diagonal bracing transition method for accelerating erection of overhanging scaffold - Google Patents
Diagonal bracing transition method for accelerating erection of overhanging scaffold Download PDFInfo
- Publication number
- CN114790818A CN114790818A CN202210634461.9A CN202210634461A CN114790818A CN 114790818 A CN114790818 A CN 114790818A CN 202210634461 A CN202210634461 A CN 202210634461A CN 114790818 A CN114790818 A CN 114790818A
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- scaffold
- inclined strut
- floor
- cantilever beam
- steel
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000007704 transition Effects 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 4
- 230000008093 supporting effect Effects 0.000 claims description 22
- 238000004873 anchoring Methods 0.000 claims 1
- 238000009435 building construction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 238000005034 decoration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Classifications
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
Abstract
The application discloses accelerate bracing transition method that encorbelment scaffold set up designs building construction technical field, including following step: embedding a positioning bolt on the upper surface of the corresponding ring beam steel bar from the outer edge, and welding and fixing the positioning bolt on the steel bar; pouring a first layer of ring beam concrete, and installing an I-shaped steel base through a positioning bolt; after a wire is erected on the vertical rod of the floor type double-row scaffold in a lofting mode around a ring beam outside a ring beam, the floor type scaffold is erected to more than two layers, and then template and steel bar construction of two layers of beams, columns and plates is carried out; after the I-beam cantilever beam embedded hole is positioned and installed, two-layer concrete pouring is carried out; the part of the cantilever beam extending out of the structure is connected with a layer of base anchor bolts through I-shaped steel inclined struts; after all the inclined struts are installed, the floor scaffold is converted into the overhanging scaffold; when the floor is poured to more than four floors, an inclined steel wire rope is additionally arranged; and finally removing the I-steel inclined strut and the base of the first layer.
Description
Technical Field
The application relates to the technical field of building construction, in particular to an inclined strut transition method for accelerating erection of a cantilever scaffold.
Background
The overhanging scaffold is a scaffold with a frame body structure unloaded on a rigid overhanging beam attached to a building structure, and is used for the operation of a main body or decoration engineering in building construction and the safety protection requirement of the main body or the decoration engineering. The supporting structure of the cantilever frame is an overhanging beam or an overhanging truss made of profile steel, and a steel pipe is not adopted; the nodes should be connected by bolts or welded, and should not be connected by fasteners. The fixing mode with the building structure should be determined by design calculation.
According to the construction progress and safety consideration, after the floor type scaffold is required to be built at least to more than four layers, the cantilever beam and the diagonal draw bar can be built only when the concrete strength of the ring beam of three layers reaches more than 75 percent, and the conversion from the floor type scaffold to the cantilever type scaffold is carried out. With this pressure-bearing and the stability that could guarantee the scaffold frame of encorbelmenting in later stage, guarantee construction safety, but need every layer all add to establish the device that is used for consolidating the cantilever beam in the work progress, construction cycle is still long when extravagant material.
Disclosure of Invention
In order to improve extravagant material when cantilever beam scaffold frame sets up the still long problem of construction cycle, this application provides an accelerate bracing transition method that cantilever scaffold set up.
The application provides a pair of bracing transition method for accelerating scaffold frame of encorbelmenting sets up adopts following technical scheme:
an inclined strut transition method for accelerating erection of a cantilever scaffold comprises the following steps:
s1, pre-burying positioning bolts on the corresponding ring beam steel bars at a position 100mm away from the outer side edges according to the floor plan layout, and welding and fixing the positioning bolts on the steel bars;
s2, pouring a first layer of ring beam concrete, and installing an I-shaped steel base through a positioning bolt after the concrete reaches a certain strength of more than 75%;
s3, after a floor type double-row scaffold vertical rod laying line is laid around the ring beam at a position 300mm away from the outer side of the ring beam, a floor type scaffold is started to be laid to more than two layers, and then template and steel bar construction of two layers of beams, columns and plates is carried out;
s4, after the I-beam cantilever beam embedded hole is positioned and installed, two-layer concrete pouring is carried out, and after the concrete pouring is finished, the cantilever beam can be installed when the strength reaches over 75 percent;
s5, using I-shaped steel diagonal braces to fix the part of the cantilever beam extending out of the structure with a layer of base anchor bolts;
s6, after all the inclined struts are installed, the floor scaffold is converted into the overhanging scaffold;
s7, when the floor is poured to more than four floors and the strength of the ring beam concrete of the three floors reaches more than 75%, arranging a diagonal steel wire rope;
s8, and finally removing the I-steel inclined strut and the base of the first layer.
Optionally, a mounting plate is arranged on one end, extending out of the floor, of the cantilever beam, one end of the inclined strut is hinged to the mounting plate, and the mounting plate can be arranged in a sliding mode along the length direction of the cantilever beam.
Optionally, a supporting piece for supporting the inclined strut is arranged on one side of the inclined strut, which is far away from the base.
Optionally, the support member comprises two support rods and a sleeve, the two support rods are respectively hinged to the inclined strut and the ground, the two support rods are provided with threads in opposite directions, and the two support rods are sleeved with the threads at the two ends of the sleeve.
Optionally, one end of the support rod on the inclined strut 3 can be slidably arranged on the inclined strut along the length direction of the inclined strut.
Optionally, a fixing piece for fixing the cable-stayed steel wire rope is arranged at one end, extending out of the floor, of the cantilever beam, and the fixing piece can slide along the length direction of the cantilever beam.
The application comprises at least one of the following advantages: the floor type scaffold does not need to be erected to a height more than four layers, the floor type scaffold only needs to be erected to a height more than two layers, and after the strength of the two layers of ring beam concrete reaches more than 75%, the cantilever beam can be erected, so that the floor type scaffold is converted into the cantilever type scaffold. The method can improve the turnover rate of the material, reduce the loss and the space utilization rate, and also ensure the safe construction.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Description of reference numerals:
1. a base; 2. a cantilever beam; 21. mounting a plate; 22. a fixing member; 3. bracing; 4. cable-stayed steel wire ropes; 5. a support member; 51. a support bar; 52. a sleeve.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses an inclined strut transition method for accelerating erection of a cantilever scaffold. Referring to fig. 1 and 2, the diagonal bracing transition method for accelerating erection of the cantilever scaffold comprises the following steps:
and S1, pre-burying positioning bolts at positions 100mm away from the outer edges of the upper surfaces of the corresponding ring beam steel bars according to the floor plan layout, wherein the number of the positioning bolts is two, and the positioning bolts are fixed on the steel bars in a welding mode.
S2, pouring a first layer of ring beam concrete, installing an I-shaped steel base 1 after the concrete reaches a certain strength of more than 75%, fixing the base 1 on a positioning bolt, and installing an anchor bolt plate on the base 1, wherein the anchor bolt plate is an ear plate in the embodiment and is fixed on the base 1 through the positioning bolt.
S3, after a wire is erected around the ring beam at a position 300mm away from the outer side of the ring beam for laying out floor type double-row scaffold upright posts, erecting the floor type scaffold to more than two layers, and then carrying out formwork and steel bar construction on the two layers of beams, columns and plates.
And S4, after the I-shaped steel cantilever beam 2 embedded holes are positioned and installed, two-layer concrete pouring is carried out, after the concrete pouring is finished, the cantilever beam 2 can be installed after the strength reaches over 75 percent, the cantilever beam 2 is fixed on a floor slab, and a part of the cantilever beam 2 extends out to be used for building a scaffold.
S5, installing the brace 3 between the extending structure of the cantilever beam 2 and the one-layer base 1, in this embodiment, the brace uses i-steel, the bottom end of the brace 3 is hinged to the anchor bolt plate on the base 1, so that the brace 3 can rotate on the base 1, the mounting plate 21 is installed at the bottom side of the floor slab part in the deep part of the cantilever beam 2, and the top end of the brace 3 is connected to the mounting plate 21, so that the brace 3 can support the cantilever beam 2.
In order to make the best supporting effect of the inclined strut 3 on the cantilever beam 2, the mounting plate 21 is arranged on the cantilever beam 2 in a sliding mode along the length direction of the cantilever beam 2, the position of the mounting plate 21 can be adjusted, the supporting angle of the inclined strut 3 on the cantilever beam 2 can be changed, after the position of the mounting plate 21 is adjusted, the mounting plate 21 is fixed on the cantilever beam 2 through bolts, and the inclined strut 3 is hinged to the mounting plate 21. Meanwhile, certain 2 errors exist between the cantilever beam 2 and the ground in the construction process, the mounting plate 21 is moved on the cantilever beam 2, so that two ends of the inclined strut 3 can be fixed on the cantilever beam 2 and the base 1 respectively, the phenomenon that the length of the inclined strut 3 is not suitable for installation of the inclined strut 3 can be avoided, the inclined strut 3 is replaced, and materials can be saved.
In order to stabilize the support of the cantilever beam 2 by the inclined strut 3, the support member 5 is installed on one side of the inclined strut 3 away from the base 1, one end of the support member 3 is installed on the inclined strut 3, the other end of the support member is fixed to the ground, the support member 5 can support the inclined strut 3, the stability of the installation of the inclined strut 3 can be improved, and the cantilever beam 2 is stabilized.
In order to conveniently adjust the supporting angle of the supporting piece 5 to the inclined strut 3, one end of the supporting rod 51, which is installed on the inclined strut 3, is arranged on the inclined strut 3 in a sliding manner along the length direction of the inclined strut 3, the supporting rod 51 is arranged on the inclined strut 3 in a sliding manner, the distance between the two supporting rods 51 can be adjusted by rotating the sleeve 52, the supporting rod 51 is fixed on the inclined strut 3 by using bolts after the position is adjusted, the supporting angle of the supporting piece 5 to the inclined strut 3 is conveniently adjusted, and the supporting effect of the supporting piece 5 to the inclined strut 3 is better.
And S6, after all the inclined struts 3 are installed, the floor scaffold is converted into the cantilever scaffold, and the scaffold is erected on the cantilever beam 2.
And S7, when the floor is poured to more than four layers, and the strength of the ring beam concrete of the three layers reaches more than 75%, arranging a cable-stayed steel wire rope 4, installing a fixing ring 22 at the upper side of one end of the cantilever beam 2 extending out of the floor slab, fixing one end of the cable-stayed steel wire rope 4 on the floor slab, fixing the other end of the cable-stayed steel wire rope 4 on the fixing ring 22 on the cantilever beam 2, wherein the cable-stayed steel wire rope 4 can play a role in reinforcing the cantilever beam 2, and the stability of the cantilever beam 2 can be further improved.
In order to enable the cable-stayed steel wire rope 4 to maximize the tension of the cantilever beam 2, the fixing ring 22 is slidably mounted on the cantilever beam 2 along the length direction of the cantilever beam 2, the fixing ring 22 is fixed on the cantilever beam 2 by using a bolt after the position of the fixing ring 22 is adjusted, so that the cable-stayed steel wire rope 4 maximizes the tension of the cantilever beam 2, and the cantilever beam 2 is more stable.
S8, removing the I-shaped steel diagonal brace 3 and the base 1 on the first floor, when more than four floors are poured on a floor, and the strength of the ring 3 beam concrete on the three floors reaches more than 75%, arranging the diagonal steel wire rope 4, and removing the I-shaped steel diagonal brace 3 and the base 1 on the first floor, thereby being capable of being repeatedly used.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. An inclined strut transition method for accelerating erection of a cantilever scaffold comprises the following steps:
s1, pre-burying positioning bolts on the corresponding ring beam steel bars at a position 100mm away from the outer edge according to a floor plan layout, and welding and fixing the positioning bolts on the steel bars;
s2, pouring a first layer of ring beam concrete, and installing an I-shaped steel base (1) through a positioning bolt after the concrete reaches a certain strength of more than 75%;
s3, after a floor type double-row scaffold vertical rod laying line is laid around the ring beam at a position 300mm away from the outer side of the ring beam, a floor type scaffold is started to be laid to more than two layers, and then template and steel bar construction of two layers of beams, columns and plates is carried out;
s4, after the I-shaped steel cantilever beam (2) pre-buried holes are positioned and installed, two-layer concrete pouring is carried out, and after the concrete pouring is finished, the cantilever beam (2) can be installed after the strength reaches more than 75%;
s5, anchoring the part of the cantilever beam (2) extending out of the structure with a layer of base (1) by an I-shaped steel inclined strut (3);
s6, after all the inclined struts (3) are installed, the floor scaffold is converted into the overhanging scaffold;
s7, when the floor is poured to more than four floors and the strength of the ring beam concrete of the three floors reaches more than 75%, arranging a diagonal steel wire rope (4);
s8, and finally removing the I-steel inclined strut (3) and the base (1) of the first layer.
2. The bracing transition method for accelerating erection of overhanging scaffold according to claim 1, wherein: the floor-mounted cantilever beam is characterized in that a mounting plate (21) is arranged at one end, extending out of a floor, of the cantilever beam (2), one end of the inclined strut (3) is hinged to the mounting plate (21), and the mounting plate (21) can slide along the length direction of the cantilever beam (2).
3. The bracing transition method for accelerating erection of overhanging scaffold according to claim 1, wherein: one side of the inclined strut (3) far away from the base (1) is provided with a supporting piece (5) used for supporting the inclined strut (3).
4. The bracing transition method for accelerating erection of overhanging scaffold according to claim 3, wherein: the supporting piece (5) comprises two supporting rods (51) and a sleeve (52), the two supporting rods (51) are hinged to the inclined strut (3) and the ground respectively, threads in opposite directions are arranged on the two supporting rods (51), and the two supporting rods (51) are sleeved at the threads at the two ends of the sleeve (52).
5. The bracing transition method for accelerating erection of overhanging scaffold according to claim 4, wherein: one end of the support rod (51) positioned on the inclined strut (3) can be arranged on the inclined strut (3) in a sliding manner along the length direction of the inclined strut (3).
6. The bracing transition method for accelerating erection of overhanging scaffold according to claim 1, wherein: and a fixing piece (22) for fixing the cable-stayed steel wire rope (4) is arranged at one end of the cantilever beam (2) extending out of the floor, and the fixing piece (22) can slide along the length direction of the cantilever beam (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210634461.9A CN114790818B (en) | 2022-06-07 | Diagonal bracing transition method for accelerating erection of overhanging scaffold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210634461.9A CN114790818B (en) | 2022-06-07 | Diagonal bracing transition method for accelerating erection of overhanging scaffold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114790818A true CN114790818A (en) | 2022-07-26 |
| CN114790818B CN114790818B (en) | 2024-04-23 |
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|---|---|---|---|---|
| EP0606948A1 (en) * | 1993-01-11 | 1994-07-20 | Hein Douwinus Voskamp | Universal supporting construction |
| FR2868455A1 (en) * | 2004-04-02 | 2005-10-07 | Frenehard Et Michaux Sa Ets | Console for holding balustrade stud and/or scaffolding floor, has sleeve fixed to abutment, and receiving free end of perch in order to permit operator situated at ground to lift console |
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| JP2018197450A (en) * | 2017-05-24 | 2018-12-13 | 平和技研株式会社 | Brace lower crosspiece coupling metal fitting |
| CN108999394A (en) * | 2018-08-14 | 2018-12-14 | 中冶建工集团有限公司 | Console mode scaffold turns the construction technology of overhanging scaffold |
| CN211622558U (en) * | 2019-12-10 | 2020-10-02 | 山西四建集团有限公司 | Adjustable horizontal protection support frame between scaffold layer |
| CN212642080U (en) * | 2020-06-15 | 2021-03-02 | 中国水利水电第九工程局有限公司 | Adjustable overhanging scaffold structure |
| CN112942778A (en) * | 2021-03-23 | 2021-06-11 | 中铁二十局集团第六工程有限公司 | Overhanging type double-row scaffold and construction method thereof |
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| CN211622558U (en) * | 2019-12-10 | 2020-10-02 | 山西四建集团有限公司 | Adjustable horizontal protection support frame between scaffold layer |
| CN212642080U (en) * | 2020-06-15 | 2021-03-02 | 中国水利水电第九工程局有限公司 | Adjustable overhanging scaffold structure |
| CN112942778A (en) * | 2021-03-23 | 2021-06-11 | 中铁二十局集团第六工程有限公司 | Overhanging type double-row scaffold and construction method thereof |
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