CN111764684A - Construction method for protectively dismantling plant roof truss - Google Patents

Construction method for protectively dismantling plant roof truss Download PDF

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Publication number
CN111764684A
CN111764684A CN202010794829.9A CN202010794829A CN111764684A CN 111764684 A CN111764684 A CN 111764684A CN 202010794829 A CN202010794829 A CN 202010794829A CN 111764684 A CN111764684 A CN 111764684A
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CN
China
Prior art keywords
unit section
span unit
span
clamping
temporary support
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Granted
Application number
CN202010794829.9A
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Chinese (zh)
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CN111764684B (en
Inventor
武念铎
王浩
许昌
王会东
董俊杰
雷克
白洁
王欣
李赟
陈新喜
余少乐
许诺
吴光辉
许国文
黄青隆
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China Construction Eighth Engineering Division Co Ltd
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China Construction Eighth Engineering Division Co Ltd
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Priority to CN202010794829.9A priority Critical patent/CN111764684B/en
Publication of CN111764684A publication Critical patent/CN111764684A/en
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Publication of CN111764684B publication Critical patent/CN111764684B/en
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    • 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
    • E04G23/00Working measures on existing buildings
    • E04G23/08Wrecking of buildings

Abstract

The invention relates to a construction method for protectively dismantling a factory building roof truss, which comprises the following steps: arranging first temporary supports among web members in the N-span, the N + 1-span and the N + 2-span unit sections, and dismantling corresponding travelling beams, wherein N is 1; arranging second temporary supports among the upright columns in the N-span, the N + 1-span and the N + 2-span unit sections, dismantling corresponding roof panels, and installing horizontal top supports at the tops of the web members of the N + 1-span and the N + 2-span unit sections; sequentially dismantling a first temporary support, a web member, a second temporary support and an upright post in the N-span unit section from top to bottom; and arranging a first temporary support between the web members in the N + 3-span unit section, dismantling the corresponding travelling beams, arranging a second temporary support between the corresponding upright posts, dismantling the corresponding roof panels, and installing a top support at the top of the web members. The invention effectively solves the problem that blasting demolition has great influence on surrounding buildings, reduces pollution such as dust, noise and the like, and has the advantages of reusable disassembled structure and good economic benefit.

Description

Construction method for protectively dismantling plant roof truss
Technical Field
The invention relates to the field of building construction, in particular to a construction method for protectively dismantling a house truss of a factory building.
Background
At present, for the most common industrial buildings, the prefabricated concrete plant is mostly demolished by blasting, but in the demolition of blasting of the plant, the influence on surrounding buildings is large, and environmental problems such as dust and noise are accompanied, the structure of the plant is also destroyed, and the plant cannot be reused, and the economic benefit is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a construction method for protectively dismantling a house truss of a factory building, solves the problem that blasting dismantling has great influence on surrounding buildings, reduces pollution such as dust, noise and the like, and has the advantages of reusable dismantled structure and good economic benefit.
The technical scheme for realizing the purpose is as follows:
the invention provides a construction method for protectively dismantling a factory building roof truss, which comprises a plurality of upright posts arranged on the ground at intervals, a travelling beam horizontally arranged at the tops of the upright posts, web members vertically fixed at the tops of the upright posts and a roof panel fixedly arranged at the tops of two adjacent web members, and comprises the following steps:
s11, sequentially dividing a factory building roof truss into a plurality of cross unit sections along the horizontal direction;
s12, arranging a first temporary support among web members in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, and detaching a travelling crane beam in the N-span unit section, the N + 1-span large-heating section and the N + 2-span unit section, wherein N is 1;
s13, arranging second temporary supports among the upright columns in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, dismantling roof panels in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, and installing horizontal top supports at the tops of web members of the N + 1-span unit section and the N + 2-span unit section;
s14, sequentially removing the first temporary support, the web members, the second temporary support and the stand columns in the N-span unit sections from top to bottom;
s15, arranging a first temporary support between the web members in the N + 3-span unit section, removing the travelling beam in the N + 3-span unit section, arranging a second temporary support between the upright columns in the N + 3-span unit section, removing the roof panel in the N + 3-span unit section, and installing a top support corresponding to the top of the web members;
and then, changing the N to the N +1, and repeating the steps S14-S15 until all the plant roof trusses are dismantled.
According to the construction method for protectively dismantling the plant roof truss, after the first temporary support is arranged between the web members, the travelling beam in the unit section is dismantled, the second temporary support is erected between the stand columns, the roof panel is dismantled, and the first temporary support, the web members, the second temporary support and the stand columns are dismantled from top to bottom, so that the plant roof truss is dismantled, the dismantled structure can be reused, in addition, the first temporary support and the second temporary support can be recycled, the supporting cost is low, the problem that blasting dismantling has a large influence on peripheral buildings is solved, pollution of raised dust, noise and the like is reduced, the dismantled structure can be reused, and the economic benefit is good.
The construction method for the protective dismantling of the plant roof truss is further improved in that the construction method further comprises the following steps:
and conveying the first temporary support and the second temporary support of the N-span unit section to the N + 3-span unit section, installing the first temporary support between web members of the N + 3-span unit section, and installing the second temporary support between upright posts of the N + 3-span unit section.
The construction method for the protective dismantling of the factory building roof truss is further improved in that the first temporary support comprises two cross-shaped shear supports, the ends of the shear supports are detachably fixed to the web members.
The construction method for the protective dismantling of the plant roof truss is further improved in that the end part of the shear brace is rotatably connected with a first clamping piece;
the first clamping piece is utilized to clamp the web member, so that the shear brace is fixedly connected with the web member.
The construction method for the protective dismantling of the plant roof truss is further improved in that the first clamping piece comprises a first fixing plate and a second fixing plate, wherein the first fixing plate is rotatably connected to the end part of the shear support, and the second fixing plate is arranged opposite to the first fixing plate;
utilize first fixed plate and second fixed plate to carry the web member, and then make first holder clamp in the web member through first fixed plate of bolt fixed connection and second fixed plate.
The construction method for the protective dismantling of the plant roof truss is further improved in that the second temporary support comprises two diagonal braces which are intersected with each other and form an X shape and a cross brace which is horizontally supported at the top of the upright post, and the ends of the diagonal braces and the end of the cross brace are detachably fixed on the upright post.
The construction method for the protective dismantling of the plant roof truss is further improved in that the end parts of the inclined strut and the cross strut are rotatably connected with second clamping pieces;
utilize the second holder to clip the stand for bracing or stull can with stand fixed connection.
The construction method for the protective dismantling of the plant roof truss is further improved in that the second clamping piece comprises a first clamping plate and a second clamping plate, wherein the first clamping plate is rotatably connected to the end part of the inclined strut or the cross strut;
utilize first splint and second splint to carry the stand, and then through first splint of bolt fixed connection and second splint for the second holder is fixed in the stand.
The construction method for the protective dismantling of the house truss of the factory building is further improved in that a clamping groove is formed at the bottom of the top support corresponding to the web member;
the clamping groove is correspondingly clamped at the top end of the web member, so that the top support is fixedly connected to the top of the web member.
Drawings
FIG. 1 is a flow chart of a construction method for the protective demolition of a plant roof truss of the invention.
FIG. 2 is an enlarged schematic view of a top support, a first temporary support and a second temporary support in the construction method for the protective demolition of the plant roof truss.
Fig. 3 is a schematic diagram of the construction method for the protective dismantling of the plant roof truss, after the first temporary support is installed.
Fig. 4 is a schematic diagram of the roof panel and the crane beam after being removed in the construction method for the protective removal of the plant roof truss.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
With reference to fig. 1, the invention provides a construction method for protectively dismantling a factory building roof truss, which is characterized in that after a first temporary support is arranged between web members, a travelling beam in a unit section is dismantled, and then a second temporary support is erected between stand columns, a roof panel is dismantled, and then the first temporary support, the web members, the second temporary support and the stand columns are dismantled from top to bottom, so that the factory building roof truss is dismantled, the dismantled structure can be reused, in addition, the first temporary support and the second temporary support can be recycled, the support cost is lower, the problem that blasting dismantling has a large influence on peripheral buildings is solved, pollution such as dust raising and noise is reduced, the dismantled structure can be reused, and the economic benefit is good. The construction method for the protective demolition of the factory building roof truss is described below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a flow chart of a construction method for the protective demolition of a factory building roof truss. The construction method for the protective demolition of the factory building roof truss of the present invention will be described with reference to fig. 1.
As shown in fig. 1, fig. 3 and fig. 4, the construction method for the protective demolition of a factory building roof truss of the present invention includes a plurality of vertical columns 21 erected on the ground at intervals, a crane beam 23 horizontally installed on the tops of the plurality of vertical columns 21, web members 22 vertically fixed on the tops of the vertical columns 21, and a roof panel 24 fixedly installed on the tops of two adjacent web members 22, and includes the following steps:
s11, sequentially dividing the plant roof truss into a plurality of cross unit sections along the horizontal direction; then, step S12 is executed
Step S12 is executed, a first temporary support 11 is arranged among web members in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, and a travelling crane beam 23 in the N-span unit section, the N + 1-span large-heating section and the N + 2-span unit section is dismounted, wherein N is 1; then, step S13 is executed
Step S13 is executed, second temporary supports 12 are arranged among the upright columns in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, the roof panels 24 in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section are dismantled, and horizontal top supports 13 are arranged at the tops of the web members 22 of the N + 1-span unit section and the N + 2-span unit section; then, step S14 is executed
Step S14 is executed, wherein the first temporary support 11, the web member 22, the second temporary support 12 and the upright post 21 in the N-span unit section are sequentially detached from top to bottom; then, step S15 is executed
Step S15 is executed, a first temporary support 11 is arranged between the web members in the N + 3-span unit section, the travelling crane beam 23 in the N + 3-span unit section is removed, a second temporary support 12 is arranged between the upright posts 21 in the N + 3-span unit section, the roof panel 24 in the N + 3-span unit section is removed, and a top support 13 is arranged corresponding to the top of the web member 22;
and then, changing the N to the N +1, and repeating the steps S14-S15 until all the plant roof trusses are dismantled.
Preferably, the roof panels 24, the web members 22, the uprights 21 and the girders 23 are numbered in order to facilitate subsequent re-installation.
Specifically, still include:
the first temporary support 11 and the second temporary support 12 of the N-span unit section are conveyed to the N + 3-span unit section, the first temporary support 11 is installed between the web members 22 of the N + 3-span unit section, and the second temporary support 12 is installed between the upright posts 21 of the N + 3-span unit section, so that the turnover use of the supporting materials is realized.
As a preferred embodiment of the present invention, as shown in fig. 2, the first temporary support 11 includes two cross-shaped shear braces 111, the ends of which are detachably fixed to the web member 22.
Specifically, the end of the shear support 111 is rotatably connected with a first clamping piece 1111;
the first clamping member 1111 is used to clamp the web member 22, so that the shear brace 111 is fixedly connected to the web member 22.
Preferably, the first clamping member 1111 includes a first fixing plate rotatably connected to the end of the shear brace 111 and a second fixing plate opposite to the first fixing plate;
the web member 22 is clamped by the first fixing plate and the second fixing plate, and the first clamping member 1111 is clamped to the web member 22 by fixedly connecting the first fixing plate and the second fixing plate by bolts.
Preferably, a first ear plate is fixed at an end of the shear brace, a first connecting plate is fixed at a side portion of the first fixing plate corresponding to the first ear plate, and the first ear plate is fixedly connected with the first connecting plate through a pin shaft, so that the first fixing plate is rotatably connected to the end of the shear brace 111.
Further, the second temporary support 12 includes two diagonal braces 121 crossing each other to form an X shape and a cross brace horizontally supported on the top of the upright, and the ends of the diagonal braces 121 and the cross brace are detachably fixed to the upright 21.
Specifically, the ends of the diagonal brace 121 and the cross brace are rotatably connected with a second clamping member 1211;
the second clamping member 1211 clamps the vertical column 21 so that the diagonal brace 121 or the cross brace can be fixedly connected to the vertical column 21.
Preferably, the second clamping member 1211 includes a first clamping plate rotatably connected to an end of the inclined strut 121 or the cross strut, and a second clamping plate disposed opposite to the first clamping plate;
the first clamping plate and the second clamping plate are used for clamping the upright post 21, and then the first clamping plate and the second clamping plate are fixedly connected through bolts, so that the second clamping piece is fixed on the upright post 21.
Preferably, the end portions of the inclined strut 121 and the cross strut are both fixed with second ear plates, the side portion of the first clamping plate is fixed with a second connecting plate corresponding to the second ear plates, and the second ear plates are fixedly connected with the second connecting plate through pin shafts, so that the first clamping plate is rotatably connected to the end portions of the inclined strut and the cross strut.
Further, a clamping groove 131 is formed at the bottom of the top brace 13 corresponding to the web member;
the engaging slot 131 is correspondingly engaged with the top end of the web member 22, so that the top stay 13 is fixedly connected to the top of the web member 22.
Preferably, two steel plates may be welded to the bottom of the top brace 13, and a slot 131 is formed between the two opposite steel plates.
The specific embodiment of the invention is as follows:
sequentially dividing a factory building roof truss into a plurality of cross unit sections along the horizontal direction;
arranging a first temporary support 11 among web members 22 in the first span unit section, the second span unit section and the third span unit section, and detaching a travelling crane beam 23 in the first span unit section, the second span unit section and the third span unit section;
arranging second temporary supports 12 among the upright columns 21 in the first cross-unit section, the second cross-unit section and the third cross-unit section, dismantling roof panels 24 in the first cross-unit section, the second cross-unit section and the third cross-unit section, and installing horizontal top supports 13 at the tops of the second cross-unit section and the third cross-unit section;
the first temporary support 11, the web member 22, the second temporary support 12 and the upright post 21 in the first span unit section are sequentially dismantled from top to bottom;
arranging a first temporary support 11 between web members 22 in a fourth span unit section, removing a travelling beam 23 in the fourth span unit section, arranging a second temporary support 12 between upright posts 21 in the fourth span unit section, removing a roof panel 24 in the fourth span unit section, and installing a top support 13 corresponding to the top of the web members 22, wherein the first temporary support 11 and the second temporary support 12 used at the moment are detached parts in the first span unit section;
further dismantling the roof panel 24, the web members 22 and the upright posts 21 of the second span unit section, and repeating the steps until the workshop roof truss is completely dismantled;
when the first temporary support 11 is installed, both ends of the shear brace 111 are clamped to the web member 22 by the first clamping members 1111, so that the shear brace 111 is fixed to the web member 22, and when the second temporary support 12 is installed, both ends of the diagonal brace 121 and the lateral brace are clamped to the upright post 21 by the second clamping members 1211, so that the diagonal brace 121 and the lateral brace are fixed to the upright post 21;
the plant roof truss is dismantled by the protective dismantling method, only the supporting structure of the three-span unit section is actually needed, the supporting cost is low, the supporting structure can be used in a turnover mode, in addition, the dismantled web members 22, the stand columns 21, the roof panels 24 and the travelling beams 23 can be reused, the economic benefit is good, the influence on the periphery in the dismantling process is small, the dust emission and the noise pollution are less, and the requirement of civilized construction can be met.
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 (9)

1. A construction method for protectively dismantling a factory building roof truss comprises a plurality of stand columns which are erected on the ground at intervals, travelling beams which are horizontally arranged at the tops of the stand columns, web members which are vertically fixed at the tops of the stand columns and roof panels which are fixedly arranged at the tops of two adjacent web members, and is characterized by comprising the following steps:
s11, sequentially dividing the plant roof truss into a plurality of cross unit sections along the horizontal direction;
s12, arranging first temporary supports among web members in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, and dismantling a travelling crane beam in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, wherein N is 1;
s13, arranging second temporary supports among the upright columns in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, dismantling roof panels in the N-span unit section, the N + 1-span unit section and the N + 2-span unit section, and installing horizontal top supports at the tops of web members of the N + 1-span unit section and the N + 2-span unit section;
s14, sequentially removing the first temporary support, the web members, the second temporary support and the stand columns in the N-span unit sections from top to bottom;
s15, arranging a first temporary support between the web members in the N + 3-span unit section, removing the travelling beam in the N + 3-span unit section, arranging a second temporary support between the upright columns in the N + 3-span unit section, removing the roof panel in the N + 3-span unit section, and installing a top support corresponding to the top of the web member;
and then, changing the N to the N +1, and repeating the steps S14-S15 until all the plant roof trusses are dismantled.
2. The construction method for the protective demolition of a factory building roof truss as recited in claim 1, further comprising:
and conveying the first temporary support and the second temporary support of the N-span unit section to the N + 3-span unit section, installing the first temporary support between web members of the N + 3-span unit section, and installing the second temporary support between upright posts of the N + 3-span unit section.
3. The method for the construction of the protective demolition of factory building roof trusses as claimed in claim 1, wherein said first temporary supports comprise two shear braces crossing each other in an X-shape, the ends of said shear braces being detachably fixed to said web members.
4. The construction method for the protective demolition of factory building roof trusses as claimed in claim 3, wherein the end portion of said shear brace is rotatably connected with a first clamping member;
and clamping the web member by using the first clamping piece, so that the shear brace is fixedly connected with the web member.
5. The construction method for the protective demolition of a factory building roof truss as recited in claim 4, wherein said first clamping member includes a first fixing plate rotatably connected to an end portion of said shear brace and a second fixing plate disposed opposite to said first fixing plate;
the first fixing plate and the second fixing plate are used for clamping the web member, and then the first fixing plate and the second fixing plate are fixedly connected through bolts, so that the first clamping piece is clamped on the web member.
6. The construction method for the protective demolition of factory building roof trusses according to claim 1, wherein the second temporary support comprises two diagonal braces crossing each other in an X shape and a cross brace horizontally supported on the top of the vertical column, and the ends of the diagonal braces and the cross brace are detachably fixed to the vertical column.
7. The construction method for protectively dismantling the factory building roof truss recited in claim 6, wherein the end parts of the inclined strut and the cross strut are both rotatably connected with a second clamping piece;
and clamping the upright column by using the second clamping piece, so that the inclined support or the cross support can be fixedly connected with the upright column.
8. The construction method for the protective demolition of a factory building roof truss as recited in claim 7, wherein said second clamping member includes a first clamping plate rotatably connected to an end of said diagonal brace or cross brace and a second clamping plate disposed opposite to said first clamping plate;
and clamping the upright post by using the first clamping plate and the second clamping plate, and further fixedly connecting the first clamping plate and the second clamping plate by using bolts so that the second clamping piece is clamped on the upright post.
9. The construction method for the protective demolition of a factory building roof truss as recited in claim 1, wherein a slot is formed at the bottom of said top brace corresponding to said web member;
and correspondingly clamping the clamping grooves on the top end of the web member, so that the top support is fixedly connected to the top of the web member.
CN202010794829.9A 2020-08-10 2020-08-10 Construction method for protectively dismantling plant roof truss Active CN111764684B (en)

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