CN110805257A - Flower basket overhanging type section steel bearing beam structure and construction method - Google Patents

Flower basket overhanging type section steel bearing beam structure and construction method Download PDF

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Publication number
CN110805257A
CN110805257A CN201911124851.6A CN201911124851A CN110805257A CN 110805257 A CN110805257 A CN 110805257A CN 201911124851 A CN201911124851 A CN 201911124851A CN 110805257 A CN110805257 A CN 110805257A
Authority
CN
China
Prior art keywords
cantilever
construction
steel
pull rod
flower basket
Prior art date
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.)
Pending
Application number
CN201911124851.6A
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Chinese (zh)
Inventor
饶明和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Tuhui Construction Engineering Co Ltd
Original Assignee
Guangxi Tuhui Construction Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Tuhui Construction Engineering Co Ltd filed Critical Guangxi Tuhui Construction Engineering Co Ltd
Priority to CN201911124851.6A priority Critical patent/CN110805257A/en
Publication of CN110805257A publication Critical patent/CN110805257A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/20Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/18Scaffolds 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/001Safety or protective measures against falling down relating to scaffoldings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/006Scaffold with cantilevered sections, e.g. to accommodate overhangs or recesses in the facade
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/04Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/06Consoles; Brackets
    • E04G5/061Consoles; Brackets specially adapted for attachment to scaffolds
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/08Scaffold boards or planks
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/14Railings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/16Struts or stiffening rods, e.g. diagonal rods

Abstract

The invention relates to an external scaffold wall connecting structure and a construction method, wherein bolts embedded in a concrete external wall are used for fixing cantilever steel beams, and a basket pull rod is additionally arranged to provide lifting tension for the cantilever steel beams. The cantilever beam in the structure of the invention does not need to extend into the building for fixing, and is directly fixed on the outer side of the building outer wall, so that the inner part of the building is not influenced, and when the construction is finished and the dismantling is needed, the fire cutting is not needed, the repairing and brushing are not needed, and the hidden troubles of water seepage and water leakage of the floor or the wall surface are avoided.

Description

Flower basket overhanging type section steel bearing beam structure and construction method
Technical Field
The invention relates to the field of building construction, in particular to a flower basket overhanging type section steel bearing beam structure and a construction method.
Background
The beam with one end buried or poured on the support and the other end extending out of the support is called a cantilever beam. When setting up the scaffold, often can meet the condition that begins to erect the scaffold from the half-height of building outer wall, at this moment, need set up the cantilever beam on the building, the end of encorbelmenting of cantilever beam stretches out the building outside, and the scaffold just upwards erects from the cantilever beam as the basis gradually, and the cantilever beam is as the basis, will bear very big bending stress.
In the traditional construction for erecting the cantilever beam, the steel beam must penetrate through the outer wall of a building, extend into the room and be laid on the floor of a main structure, and then a plurality of U-shaped embedded parts are anchored on the floor plate and the floor beam, and the method has the following defects: (1) the layout of the section steel beams extending into the room is complex, and the indoor building rubbish cleaning and the walking of constructors are hindered; the profile steel penetrates through the wall body, so that concrete beams and plate members are easy to damage, and water seepage and leakage of the floor are easy to cause; before the section steel beam is dismantled, the U-shaped anchoring ring may need to be cut on site, and holes and bricks need to be repaired after the section steel beam is dismantled, so that the construction time is prolonged. (2) The tradition I-steel that encorbelments stretches into indoor fixed length and should not be less than 1.25 times of outdoor section of encorbelmenting, so under the normal condition, need be with the shaped steel roof beam that is greater than or equal to 3 meters, the shaped steel roof beam of corner then need 4~5 meters, has following shortcoming: the steel materials are added at one time, and the weight is large; a3-5 m I-steel needs to depend on a tower crane in the whole process of installation and removal, so that a large number of blind areas exist in the lifting process, and great potential safety hazards exist. (3) The condition that the I-steel that encorbelments passes through the stairwell can appear at core section of thick bamboo position in tradition cantilever scaffold, and it is very big inconvenient to pass from top to bottom to the construction operation workman, still probably causes the health injury because of the collision, has great potential safety hazard. (4) When the traditional overhanging scaffold is used for dismantling the fixing ring at the upper end of the cable-stayed steel wire rope, on-site cutting is needed, and the traditional overhanging scaffold cannot be recycled. (5) The traditional overhanging scaffold has the defects that I-shaped steel in a local area cannot be detached, a cutting method is needed, the detaching difficulty is increased, the steel materials are wasted, and the hidden danger of firing operation exists. (6) After the cantilever type steel beam is removed by a traditional cantilever scaffold, a large masonry hole exists in an outer wall, a wall hole needs to be repaired, putty and paint of the outer wall need to be repaired and brushed, water seepage and water leakage of a floor or a wall surface are easily caused, and great quality hidden troubles exist.
Disclosure of Invention
The invention provides a flower basket overhanging type section steel bearing beam structure and a construction method; cantilever beam need not to stretch into the building inside and fixes in this structure, and the direct fixation does not have the influence to the building inside in the building outer wall outside, and the construction finishes, when needing to demolish, need not to move fiery cutting, need not to mend the building and mends the brush, does not have the hidden danger that floor or wall infiltration leaked water.
In order to achieve the purpose of the invention, the technical scheme is as follows:
the flower basket overhanging type section steel bearing beam structure and the construction method comprise the following construction steps:
A. according to the requirements of a drawing, the pull rod bolt sleeve and the cantilever bolt sleeve are embedded in the outer wall of the building, and concrete pouring is carried out; when the sleeve is embedded, the sleeve is firmly welded with the main steel bar in the concrete; the arrangement of the sleeve enables the bolt to be inserted more easily, the bolt can be screwed out and recycled after construction is finished, and only sleeve holes with smooth side walls exist on the building wall;
B. after the building outer wall is poured, the cantilever steel beam is lifted to be aligned with the mounting hole for placement, the cantilever bolt assembly is inserted into the sleeve to penetrate through the cantilever steel beam mounting hole and be fastened, the pull rod is fixed after the pull rod bolt assembly is fastened, and the other end of the pull rod is fixed on a hanging lug of the cantilever steel beam; the cantilever steel beam is an I-beam of which the end part is welded with a fixed plate, and the bending stress borne by the cantilever beam is transmitted to the building outer wall through the cantilever bolt assembly, so that a stable foundation is provided for an external scaffold;
C. adjusting the screw rod of the flower basket to tighten the pull rod, and erecting an outer scaffold on the basis of the cantilever steel beam; the arrangement of the pull rod supports the tension of the cantilever steel beam, so that the cantilever steel beam has stronger bearing capacity;
D. after the outer scaffold is erected, a pedal and a safety net are installed, and then the erection is completed; the treading plate provides a flat treading ground for constructors, and the safety net is arranged at the periphery of the outer scaffold, so that the construction safety is further improved;
E. and D, after the building construction is finished, removing all the parts according to the reverse sequence of the steps A-D, filling the through holes of the embedded sleeves with concrete, namely finishing the overall construction, and finally, flattening and smoothing the outer wall of the building, wherein the repair trace is few, and the appearance of the building is hardly affected.
The bolt assembly of encorbelmenting and pull rod bolt assembly all include: the front and rear backing plates are respectively positioned on the inner side and the outer side of the building wall body, the rear backing plate is tightly attached to the wall surface, and the front backing plate is tightly attached to the cantilever steel beam fixing plate.
The pull rod bolt sleeve and the cantilever bolt sleeve are double sleeves, the connecting rods are connected between the double sleeves, the position accuracy of the through holes of the two sleeves is guaranteed due to the use of the double sleeves, and the fixing holes of the cantilever steel beams and the bolts can be accurately positioned.
Set up fixed circle of founding on the girder steel of encorbelmenting, fixed circle of founding can insert the scaffold steel pipe to realize perpendicular accurate positioning, do benefit to the whole accuracy and the firm of scaffold.
The outer edge of the upper part of the pedal is provided with a skirting board, and the skirting board can prevent objects from falling off from the scaffold.
The part that exposes the outer wall behind the installation of cantilever bolt subassembly and pull rod bolt subassembly to and basket screw thread uses plastic film to wrap up, have the position of installation grafting or thread, all need protect, and one face concrete or mortar are pasted, influence dismantlement.
At the corner position of encorbelmenting, pull rod bolt subassembly, pull rod and hangers set up the multiunit, because the corner position span of encorbelmenting is great, and the atress condition is abominable, sets up the multiunit pull rod, can effectively increase the factor of safety of the girder steel of encorbelmenting.
The secondary beam is fixed above the cantilever steel beam at the cantilever corner part, the cantilever steel beam and the fixed secondary beam are fastened by the U-shaped fasteners, the secondary beam is arranged, the large-span weight of the corner part can be distributed to a plurality of cantilever steel beams, the whole stress stability of the structure is facilitated, and the cantilever steel beam and the secondary beam are tightly fixed by the U-shaped fasteners to prevent displacement.
Compared with the prior art, the invention has the substantive characteristics and the progress that:
1. the overhanging I-shaped steel is cantilevered from the outer side of the structure, does not extend into a floor surface, does not need to embed a U-shaped snap ring in advance, does not influence the cleaning of floor garbage, avoids the water seepage and leakage risks of the floor, and does not need to carry out large-scale hole repairing operation.
2. The cantilever I-steel has the advantages that the cantilever length is 1250mm for the most part, and the corners of the cantilever I-steel are slightly longer, compared with the traditional method, the steel consumption is less, the one-time investment cost is low, the cutting is not needed, and the turnover rate can reach 100%; the hoisting is light and convenient, and the operation efficiency is high.
3. The I-shaped steel does not extend into floors or staircases, has no influence on the construction of a masonry structure and a decoration stage, and does not have the condition of personal injury caused by stumbling or colliding with construction operators.
4. The upper pull anchoring point of the cantilever scaffold is a detachable bolt, so that the cantilever scaffold does not need to be cut off, the influence of external decoration operation is small, after the external scaffold is dismantled, the diagonal draw bar is dismantled, the hole in the side wall of the structure is repaired, and the repairing workload is small.
5. The cantilever I-shaped steel and the diagonal draw bar of the cantilever scaffold are fixed through the detachable bolts, so that the cantilever scaffold is convenient to detach, relatively simple to operate, free of material waste and free of fire hazard.
6. After the overhanging I-steel is dismantled by the overhanging scaffold, the structure only has a small number of screw holes on the outer vertical surface, and the condition that the masonry holes need to be repaired does not exist, so that the repairing workload is reduced, the hidden quality troubles of water seepage and water leakage are controlled, the repairing cost is saved, and the construction period is shortened.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an overhanging corner structure of the present invention;
FIG. 3 is a schematic exploded view of the cantilever bolt assembly and the stay bolt assembly of the present invention;
FIG. 4 is a schematic top view of an overhanging corner according to the present invention;
the reference numbers in the figures are: 1. cantilever steel beam; 2. a pull rod; 21. hanging a lug; 22. a flower basket screw; 3. building exterior walls; 4. a draw bar bolt assembly; 5. an overhanging bolt assembly; 6. an outer scaffold; 61. fixing the vertical ring; 62. a secondary beam; 63. a U-shaped fastener; 7. treading a pedal; 8. a safety net; 9. skirting board.
Detailed Description
Example 1
The present invention will be described in further detail with reference to the accompanying fig. 1-4 of the present invention;
the flower basket overhanging type section steel bearing beam structure and the construction method comprise the following construction steps:
A. according to the requirements of a drawing, the pull rod bolt sleeve and the cantilever bolt sleeve are embedded in the building outer wall 3 for concrete pouring;
B. after the building outer wall 3 is poured, the cantilever steel beam 1 is lifted to be aligned with the mounting hole for placement, the cantilever bolt assembly 5 is inserted into the sleeve to penetrate through the cantilever steel beam mounting hole and be fastened, the pull rod 2 is fixed after the pull rod bolt assembly 4 is fastened, and the other end of the pull rod 2 is fixed on a hanging lug 21 of the cantilever steel beam 1;
C. adjusting the flower basket screw 22 to tighten the pull rod 2, and erecting the outer scaffold 6 on the basis of the cantilever steel beam 1;
D. after the outer scaffold 6 is erected, a pedal 7 and a safety net 8 are installed, and then the erection is completed;
E. and D, after the building construction is finished, dismantling all the parts according to the reverse sequence of the steps A-D, and filling the through holes of the embedded sleeves with concrete, so that the overall construction is finished.
The overhanging bolt assembly 5 and the pull rod bolt assembly 4 both include: the screw rod specification is phi 28 x 300mm, the front and rear backing plate specification is 50 x 5mm, and the backing plate hole diameter is phi 32 mm.
The pull rod bolt sleeve and the cantilever bolt sleeve are double sleeves, the double sleeves are connected through a connecting rod, and the specification of the sleeves is phi 40 x 195 mm.
And a fixed vertical ring 61 is arranged on the cantilever steel beam 1.
The outer edge of the upper part of the pedal 7 is provided with a skirting board 9.
The parts of the outer wall are exposed after the cantilever bolt assembly 5 and the pull rod bolt assembly 4 are installed, and the screw teeth of the basket screw are wrapped by plastic films.
And a plurality of groups of pull rod bolt assemblies 4, pull rods 2 and hanging lugs 21 are arranged at the overhanging corner parts.
At the corner position of encorbelmenting, the fixed secondary beam 62 of girder steel 1 top of encorbelmenting uses U type fastener 63 to fasten between girder steel 1 and the fixed secondary beam 62 of encorbelmenting.

Claims (8)

1. A flower basket overhanging type section steel carrier beam structure and a construction method are characterized in that: the method comprises the following construction steps:
A. according to the requirements of a drawing, the pull rod bolt sleeve and the cantilever bolt sleeve are embedded in the building outer wall (3) for concrete pouring;
B. after the building outer wall (3) is poured, the cantilever steel beam (1) is lifted to be aligned to the mounting hole for placement, the cantilever bolt assembly (5) is inserted into the sleeve to penetrate through the cantilever steel beam mounting hole and be fastened, the pull rod (2) is fixed after the pull rod bolt assembly (4) is fastened, and the other end of the pull rod (2) is fixed on a hanging lug (21) of the cantilever steel beam (1);
C. adjusting a flower basket screw rod (22) to tighten the pull rod (2), and erecting an outer scaffold (6) on the basis of the cantilever steel beam (1);
D. after the outer scaffold (6) is erected, a pedal (7) and a safety net (8) are installed, and then the erection is completed;
E. and D, after the building construction is finished, dismantling all the parts according to the reverse sequence of the steps A-D, and filling the through holes of the embedded sleeves with concrete, so that the overall construction is finished.
2. The flower basket cantilever type steel carrier bar structure and the construction method according to claim 1, wherein: cantilever bolt subassembly (5) and stay bolt subassembly (4) all include: bolt, spring washer, nut and front and back backing plate.
3. The flower basket cantilever type steel carrier bar structure and the construction method according to claim 1, wherein: the pull rod bolt sleeve and the cantilever bolt sleeve are double sleeves, and connecting rods are arranged between the double sleeves.
4. The flower basket cantilever type steel carrier bar structure and the construction method according to claim 1, wherein: the cantilever steel beam (1) is provided with a fixed vertical ring (61).
5. The flower basket cantilever type steel carrier bar structure and the construction method according to claim 1, wherein: the outer edge of the upper part of the pedal (7) is provided with a skirting board (9).
6. The flower basket cantilever type steel carrier bar structure and the construction method according to claim 1, wherein: the part of the overhanging bolt component (5) and the pull rod bolt component (4) exposed out of the outer wall after being installed, and the screw thread of the basket screw are wrapped by a plastic film.
7. The flower basket cantilever type steel carrier bar structure and the construction method according to claim 1, wherein: and a plurality of groups of pull rod bolt assemblies (4), pull rods (2) and hangers (21) are arranged at the overhanging corner parts.
8. The flower basket cantilever type steel carrier bar structure and the construction method according to claim 1, wherein: at the corner position of encorbelmenting, girder steel (1) top fixed secondary beam (62) encorbelment uses U type fastener (63) to fasten between girder steel (1) and the fixed secondary beam (62) of encorbelmenting.
CN201911124851.6A 2019-11-18 2019-11-18 Flower basket overhanging type section steel bearing beam structure and construction method Pending CN110805257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911124851.6A CN110805257A (en) 2019-11-18 2019-11-18 Flower basket overhanging type section steel bearing beam structure and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911124851.6A CN110805257A (en) 2019-11-18 2019-11-18 Flower basket overhanging type section steel bearing beam structure and construction method

Publications (1)

Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111335618A (en) * 2020-04-21 2020-06-26 中国核工业中原建设有限公司 Drawknot system of assembled suspension scaffold
CN112267659A (en) * 2020-10-26 2021-01-26 中铁六局集团有限公司 Construction method of bolt type I-steel cantilever scaffold

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202227476U (en) * 2011-09-15 2012-05-23 浙江城建建设集团有限公司 High-altitude large-span overhung corridor-type reinforced concrete structure
CN105926925A (en) * 2016-06-21 2016-09-07 中天建设集团有限公司天津分公司 Joist steel cantilever beam of suspended scaffold and construction method thereof
CN205777424U (en) * 2016-07-07 2016-12-07 中建三局集团有限公司 A kind of pull-up builder's jack support means being anchored in outside structure
CN206844617U (en) * 2017-06-22 2018-01-05 中国新兴建筑工程总公司 A kind of builder's jack
CN109779225A (en) * 2019-03-13 2019-05-21 中国十七冶集团有限公司 A kind of change overhanging type external scaffold and construction method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202227476U (en) * 2011-09-15 2012-05-23 浙江城建建设集团有限公司 High-altitude large-span overhung corridor-type reinforced concrete structure
CN105926925A (en) * 2016-06-21 2016-09-07 中天建设集团有限公司天津分公司 Joist steel cantilever beam of suspended scaffold and construction method thereof
CN205777424U (en) * 2016-07-07 2016-12-07 中建三局集团有限公司 A kind of pull-up builder's jack support means being anchored in outside structure
CN206844617U (en) * 2017-06-22 2018-01-05 中国新兴建筑工程总公司 A kind of builder's jack
CN109779225A (en) * 2019-03-13 2019-05-21 中国十七冶集团有限公司 A kind of change overhanging type external scaffold and construction method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111335618A (en) * 2020-04-21 2020-06-26 中国核工业中原建设有限公司 Drawknot system of assembled suspension scaffold
CN111335618B (en) * 2020-04-21 2021-12-03 淮安市博彦土木工程科学研究院有限公司 Drawknot system of assembled suspension scaffold
CN112267659A (en) * 2020-10-26 2021-01-26 中铁六局集团有限公司 Construction method of bolt type I-steel cantilever scaffold

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