CN109505412B - Vertical splicing and overturn preventing method for large plate girder - Google Patents

Vertical splicing and overturn preventing method for large plate girder Download PDF

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Publication number
CN109505412B
CN109505412B CN201811451929.0A CN201811451929A CN109505412B CN 109505412 B CN109505412 B CN 109505412B CN 201811451929 A CN201811451929 A CN 201811451929A CN 109505412 B CN109505412 B CN 109505412B
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China
Prior art keywords
large plate
beams
structural system
stable structural
flexible
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CN201811451929.0A
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CN109505412A (en
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黄伟
焦建东
刘豪
白海
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Shanghai Baoye Group Corp Ltd
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Shanghai Baoye Group Corp Ltd
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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
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus
    • E04G21/145—Means in or on the elements for connecting same to handling apparatus specific for hollow plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/167—Tools or apparatus specially adapted for working-up plates, panels or slab shaped building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/18—Adjusting tools; Templates
    • E04G21/1841—Means for positioning building parts or elements
    • 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
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/26—Strutting means for wall parts; Supports or the like, e.g. for holding in position prefabricated walls

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention relates to the field of steel structure installation, in particular to a vertical splicing overturn-preventing method for a large plate girder; the method is characterized in that: comprises preparing a bracket; selecting two end heads and two middle end heads of the vertically spliced large plate girder as positions for mounting flexible supports, mounting the flexible supports, and tensioning turn-buckle screws; mounting a connecting beam and a flexible support of the two large plate beams at the end head to form a stable structural system; with the increase of the number of the vertically spliced large plate beams, the connecting beam and the local flexible support are sequentially installed, so that the whole plurality of large plate beams which are arranged side by side are always a stable structural system; when the large plate beams are lifted away, the connecting beams and the flexible supports are detached one by one, so that the whole large plate beam system is a stable structural system all the time before the last two large plate beams are lifted away. The support in the overturn-preventing method is a standard component processed in a factory, and can be reused, so that material waste is avoided; meanwhile, the method connects the large plate beams, and the anti-overturning effect is good.

Description

Vertical splicing and overturn preventing method for large plate girder
Technical Field
The invention relates to the field of steel structure installation, in particular to a vertical splicing overturn-preventing method for a large plate girder.
Background
In recent years, with the development of national economy and construction industry, solid-web large plate girders with larger height and larger span are increasingly applied to industrial buildings (particularly power plants, steel plants, boiler plants and the like) and civil buildings (large-span space structures), the large plate girders are generally processed by sections in factories and then are installed in a mode of integral assembly and hoisting in a construction site, and the analysis of continuous overturning is more intensified due to the fact that the height of the large plate girders is higher in the process of erecting and assembling the large plate girders in the construction site, particularly when the construction site operation site is limited, the condition that a plurality of large plate girders are closely adjacent to each other is likely to exist, the measures generally adopted at present are mainly to weld section steels among the large plate girders for reinforcement, the defects of the reinforcement mode can cause local damage to finished steel members and influence the appearance quality and even the safety quality of the members, and the structural stability after the fixation is insufficient.
Disclosure of Invention
The aim of the present invention is to overcome the above drawbacks and to provide an anti-overturning method that allows to maintain the stability of the reinforcing structure without affecting the steel structure.
In order to achieve the above object, the present invention is realized by:
a vertical splicing overturn-preventing method for a large plate girder comprises
Step 1, preparing a bracket: the bracket comprises a connecting beam, a clamping piece, a turnbuckle, a flexible support and a bolt;
step 2, finishing the connecting beam in a factory according to the flange size of the large plate beam which is vertically spliced on site, wherein the connecting beam adopts H-shaped steel, I-shaped steel and clamping pieces, turn buckle screws and common bolts to purchase finished parts, and the flexible support is finished by manufacturing on-site reinforcing steel bars;
step 3, selecting two end heads and two middle end heads of the vertically spliced large plate girder as positions for installing flexible supports, installing the flexible supports, and tensioning the turnbuckles;
step 4, mounting a connecting beam and a flexible support of the two large plate beams at the end head to enable the two large plate beams at the end head to form a stable structural system;
step 5, with the increase of the number of the vertically spliced large plate beams, sequentially installing the connecting beams and the local flexible supports to ensure that the whole plurality of large plate beams which are arranged side by side are always a stable structural system;
and 6, when the large plate beams are lifted away, the connecting beams and the flexible supports are detached one by one, so that the whole large plate beam system is always a stable structural system before the last two large plate beams are lifted away.
The concrete structure of the support is as follows: the two connecting beams are arranged in parallel, the upper flange and the lower flange of the large plate beam are connected with the two connecting beams through the clamping pieces, and the two connecting beams are tensioned in a crossed mode through the steel bars on site.
The support in the overturn-preventing method is a standard component processed in a factory, and can be reused, so that material waste is avoided; meanwhile, the method connects the large plate girders, has good anti-overturning effect, and can always form a stable structural system in the processes of vertically splicing and one-by-one hanging-off the large plate girders; furthermore, the support in the overturn-preventing method has strong adaptability and can be adjusted according to the height and the number of the vertically spliced large plate girders; thereby causing no damage to the steel member; and the disassembly and the installation are very convenient and fast.
Drawings
FIG. 1 is a schematic diagram of the structure of the stent in the method.
FIG. 2 is a schematic diagram of the structure of the system formed in the method.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in figures 1 and 2, a vertical splicing overturn-preventing method for a large plate girder comprises
Step 1, preparing a bracket: the bracket comprises a connecting beam 1, a clamping piece 2, a turnbuckle, a flexible support 3 and a bolt;
step 2, finishing the connecting beam 1 in a factory according to the flange size of the large plate beam 4 which is vertically spliced on site, purchasing finished parts by adopting H-shaped steel, I-shaped steel and clamping parts, turnbuckles and common bolts for the connecting beam 1, and finishing the flexible support 3 by manufacturing on-site reinforcing steel bars;
step 3, selecting two end heads and two middle end heads of the vertically spliced large plate girder 4 as positions for mounting the flexible supports 3, and tensioning the turnbuckles;
step 4, mounting the connecting beam 1 and the flexible support 3 of the two large plate beams 4 at the end head, so that the two large plate beams 4 at the end head form a stable structural system;
step 5, with the increase of the number of the vertically spliced large plate beams, sequentially installing the connecting beams and the local flexible supports to ensure that the whole plurality of large plate beams which are arranged side by side are always a stable structural system;
and 6, when the large plate beams are lifted away, the connecting beams and the flexible supports are detached one by one, so that the whole large plate beam system is always a stable structural system before the last two large plate beams are lifted away.
The concrete structure of the support is as follows: the two connecting beams are arranged in parallel, the upper flange and the lower flange of the large plate beam are connected with the two connecting beams through the clamping pieces, and the two connecting beams are tensioned in a crossed mode through the steel bars on site.
The support in the overturn-preventing method is a standard component processed in a factory, and can be reused, so that material waste is avoided; meanwhile, the method connects the large plate girders, has good anti-overturning effect, and can always form a stable structural system in the processes of vertically splicing and one-by-one hanging-off the large plate girders; furthermore, the support in the overturn-preventing method has strong adaptability and can be adjusted according to the height and the number of the vertically spliced large plate girders; thereby causing no damage to the steel member; and the disassembly and the installation are very convenient and fast.

Claims (2)

1. A vertical splicing overturn-preventing method for a large plate girder is characterized by comprising the following steps: comprises that
Step 1, preparing a bracket: the bracket comprises a connecting beam, a clamping piece, a turnbuckle, a flexible support and a bolt;
step 2, finishing the connecting beam in a factory according to the flange size of the large plate beam which is vertically spliced on site, wherein the connecting beam is made of H-shaped steel and I-shaped steel, finished parts are purchased by the clamping piece, the turnbuckle and the common bolt, and the flexible support is finished by manufacturing on-site steel bars;
step 3, selecting two end heads and two middle end heads of the vertically spliced large plate girder as positions for installing flexible supports, installing the flexible supports, and tensioning the turnbuckles;
step 4, mounting a connecting beam and a flexible support of the two large plate beams at the end head to enable the two large plate beams at the end head to form a stable structural system;
step 5, with the increase of the number of the vertically spliced large plate beams, sequentially installing the connecting beams and the local flexible supports to ensure that the whole plurality of large plate beams which are arranged side by side are always a stable structural system;
and 6, when the large plate beams are lifted away, the connecting beams and the flexible supports are detached one by one, so that the whole large plate beam system is always a stable structural system before the last two large plate beams are lifted away.
2. The vertical splicing overturn-preventing method for the large plate girder as claimed in claim 1, which is characterized in that: the specific structure of the bracket is as follows: the two connecting beams are arranged in parallel, the upper flange and the lower flange of the large plate beam are connected with the two connecting beams through the clamping pieces, and the two connecting beams are tensioned in a crossed mode through the steel bars on site.
CN201811451929.0A 2018-11-30 2018-11-30 Vertical splicing and overturn preventing method for large plate girder Active CN109505412B (en)

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CN201811451929.0A CN109505412B (en) 2018-11-30 2018-11-30 Vertical splicing and overturn preventing method for large plate girder

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Application Number Priority Date Filing Date Title
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CN109505412B true CN109505412B (en) 2021-03-26

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* Cited by examiner, † Cited by third party
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CN112894743B (en) * 2021-01-15 2022-07-12 山东大学 Concrete prefabricated T roof beam antidumping device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2057234C1 (en) * 1994-05-27 1996-03-27 НПП "Энергоперспектива" Suspended trestle and method for installing wall enclosure
CN103225411A (en) * 2013-05-08 2013-07-31 中铁十局集团西北工程有限公司 Existing line protective shed
CN104846734A (en) * 2015-06-02 2015-08-19 中建四局第六建筑工程有限公司 Unit-assembly type steel trestle
CN105926855A (en) * 2016-06-30 2016-09-07 浙江东南网架股份有限公司 Super-high-rise core tube suspended steel rib column and construction method thereof
CN205954904U (en) * 2016-08-10 2017-02-15 中国建筑第八工程局有限公司 Board house prevent overtum equipment
CN207061642U (en) * 2017-06-18 2018-03-02 中国能源建设集团东北电力第一工程有限公司 A kind of boiler girder lifts interim lengthening beam
CN207160539U (en) * 2017-09-08 2018-03-30 中核华泰建设有限公司 A kind of easy-to-dismount overhanging scaffold of high-mechanic

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2057234C1 (en) * 1994-05-27 1996-03-27 НПП "Энергоперспектива" Suspended trestle and method for installing wall enclosure
CN103225411A (en) * 2013-05-08 2013-07-31 中铁十局集团西北工程有限公司 Existing line protective shed
CN104846734A (en) * 2015-06-02 2015-08-19 中建四局第六建筑工程有限公司 Unit-assembly type steel trestle
CN105926855A (en) * 2016-06-30 2016-09-07 浙江东南网架股份有限公司 Super-high-rise core tube suspended steel rib column and construction method thereof
CN205954904U (en) * 2016-08-10 2017-02-15 中国建筑第八工程局有限公司 Board house prevent overtum equipment
CN207061642U (en) * 2017-06-18 2018-03-02 中国能源建设集团东北电力第一工程有限公司 A kind of boiler girder lifts interim lengthening beam
CN207160539U (en) * 2017-09-08 2018-03-30 中核华泰建设有限公司 A kind of easy-to-dismount overhanging scaffold of high-mechanic

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