CN108979113B - Simple nuclear power station equipment gate construction platform - Google Patents

Simple nuclear power station equipment gate construction platform Download PDF

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Publication number
CN108979113B
CN108979113B CN201810677660.1A CN201810677660A CN108979113B CN 108979113 B CN108979113 B CN 108979113B CN 201810677660 A CN201810677660 A CN 201810677660A CN 108979113 B CN108979113 B CN 108979113B
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China
Prior art keywords
platform
gate
horizontal section
construction
equipment gate
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CN201810677660.1A
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Chinese (zh)
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CN108979113A (en
Inventor
向群
耿秀伟
李闯
姜海滨
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China Nuclear Industry Huaxing Construction Co Ltd
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China Nuclear Industry Huaxing Construction Co Ltd
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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
    • 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

Abstract

The invention relates to a simple nuclear power station equipment gate construction platform which comprises three parts, namely a platform upright post, a platform cross beam and a platform horizontal section, wherein a joint is arranged at the joint; the horizontal section of the platform is connected with the equipment gate through a thick steel plate and two short angle steels on one side close to the gate; the platform horizontal section is positioned in the middle of the gate and is connected with the equipment gate through a platform upright post; the platform upright post below the horizontal section of the platform is connected with the equipment gate through a gusset plate; two angle steels are used as inclined struts between the overhanging parts of the horizontal sections of the platform and the platform upright posts. The method can reduce the construction period risk and the construction safety risk of the nuclear power station, creates conditions for the construction of the shell and the circular wall of the fuel plant, ensures the construction progress of the nuclear island main body, and shortens the construction period of the main key path of the nuclear power station.

Description

Simple nuclear power station equipment gate construction platform
Technical Field
The invention discloses a simple nuclear power station equipment gate construction platform, relates to the whole construction processes of manufacturing, on-site assembling, formwork erecting, concrete pouring and the like of a nuclear power station containment equipment gate construction platform, and belongs to the technical field of building construction.
Background
The nuclear power station equipment gate is respectively located 60 degrees of inner and outer shells, central elevation +19.700m, diameter 8064mm, because equipment gate diameter ratio is great, the construction horizon of strideing across is more, leads to being located the unable normal use of stores pylon in equipment gate region. The traditional method comprises the following steps: and (4) hanging a bearing hanging frame under the equipment gate, and then erecting a scaffold or a tower frame on the bearing hanging frame to serve as a construction platform.
The traditional method is completed by means of a bearing hanging frame at the lower part of an equipment gate, the gate of the inner shell equipment protrudes out of the surface of a cylinder body, the height of the protruding part is 14.6m, when the gate area of the inner shell equipment is constructed, the height of a scaffold or a tower erected on the bearing hanging frame is more than 12m, the time for erecting the scaffold or the tower on site is longer, and the safety risk is higher; due to the existence of the bearing hanging rack, the construction height of the shell is limited, and the construction of the shell is blocked due to the conflict of the inner and outer shell hanging racks when the shell is constructed at the lower part of the bearing hanging rack below the equipment gate, so that the whole construction progress of containment construction is influenced. Similarly, the construction progress of the annular wall of the fuel plant can be influenced by the construction shell equipment gate.
The traditional construction technology has a great risk of construction period for the construction of a new reactor type nuclear power station, particularly the first reactor.
Disclosure of Invention
The invention aims to reduce the construction period risk and the construction safety risk of the nuclear power station, create conditions for the construction of the shell and the circular wall of the fuel plant, ensure the construction progress of the nuclear island main body and shorten the construction period of the main key path of the nuclear power station.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a simple nuclear power station equipment gate construction platform is composed of three parts, including a platform upright post, a platform cross beam and a platform horizontal section, wherein a joint is arranged at the joint; the horizontal section of the platform is connected with the equipment gate through a thick steel plate and two short angle steels on one side close to the gate; the platform horizontal section is positioned in the middle of the gate and is connected with the equipment gate through a platform upright post; the platform upright post below the horizontal section of the platform is connected with the equipment gate through a gusset plate; two angle steels are used as inclined struts between the overhanging parts of the horizontal sections of the platform and the platform upright posts.
Furthermore, in the connection of the horizontal section of the platform, a thick steel plate is vertically welded on the inner side of the equipment gate, two short angle steels are welded on the top of the thick steel plate to form a support of the horizontal section of the platform, and finally the horizontal section of the platform is welded on the support.
Furthermore, the platform horizontal section is two channel-section steels, passes through steel sheet welded connection between platform horizontal section and the platform stand.
Furthermore, the platform stand is two channel-section steels, welds a gusset plate between two channel-section steels, welds the gusset plate on equipment gate again.
The inclined struts are connected with the platform upright post through the gusset plate, and the gusset plate is welded between the platform upright post close to the outer side and the two angle steel inclined struts, so that the overhanging part forms a triangular system.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention relates to a construction process for using a 'Mi' -shaped support welding steel platform as an equipment gate construction operation platform in a nuclear power station equipment gate, which changes the traditional construction method for hanging a bearing hanging frame at the lower part of the equipment gate and belongs to the construction technology adopted for the first time at home and abroad;
(2) aiming at the structural form characteristics of the equipment gate, the equipment gate construction platform is innovatively designed, the deformation control and bearing capacity requirements of the whole construction period (platform welding, construction platform erection, scaffold steel pipe or tower erection, template erection and concrete pouring) of the equipment gate are met, and the use requirements of each stage are met.
Drawings
FIG. 1: the front vertical surface structure of the equipment gate construction platform is schematic (the left figure is an inner shell, and the right figure is an outer shell).
FIG. 2: the section structure of the gate construction platform of the inner shell equipment is schematic.
FIG. 3: the sectional structure of the gate construction platform of the shell equipment is schematic.
FIG. 4: the horizontal section of the platform is connected with the gate of the equipment.
FIG. 5: the structural schematic diagram of the platform upright post.
FIG. 6: the platform upright post and the platform horizontal section are connected schematically.
FIG. 7: platform stand and equipment gate connection sketch map.
FIG. 8: the platform upright post and the gusset plate are connected schematically.
Detailed Description
The present invention will be further described with reference to the following specific examples.
A simple nuclear power station equipment gate construction platform is composed of three parts, including a platform upright post 1, a platform beam 2 and a platform horizontal section 3, wherein joints 4-1, 4-2 and 4-3 are arranged at the joints, and the upper part and the lower part of the gate construction platform are respectively connected with a 'meter' -shaped support 5 and an equipment gate 6 in the equipment gate; the horizontal section 3 of the platform is connected with the equipment gate 6 at one side close to the gate 6 through a steel plate with the thickness of 10mm and two L70 multiplied by 7 short angle steels 7; the platform horizontal section 3 is positioned in the middle of the gate 6, and the platform horizontal section 3 is connected with the equipment gate 6 through the platform upright post 1; the platform upright post 1 below the platform horizontal section 3 is connected with the equipment gate 6 through a 10mm node plate 14; 2L 70 multiplied by 7 angle steel 8 are used as diagonal braces between the overhanging part of the platform horizontal section 3 and the platform upright post 1.
In the connection of the platform horizontal section 3, a 10mm thick steel plate is vertically welded on the inner side of the equipment gate 6, two L70 × 7 short angle steels 7 are welded on the top of the 10mm thick steel plate to form a support of the platform horizontal section, and finally the platform horizontal section is welded on the support.
The platform horizontal section 3 is two [25c channel steels, and the platform horizontal section 3 is connected with the platform upright post 1 through a 25mm steel plate 10 in a welding mode.
The platform upright column 1 is composed of two [20a channel steels 11, a 10mm node plate 14 is welded between the two [20a channel steels 11, and then the node plate is welded on the equipment gate 6. The welding area of the upright post and the equipment gate 6 can be increased through the 10mm node plate 14, and the overall stability of the platform is improved.
The bracing is connected through another 10mm gusset plate 13 with the platform stand between, welds another 10mm gusset plate 13 in the middle of the platform stand that is close to the outside and two L70X 7 angle steel 8 bracing, makes the part of encorbelmenting form the triangle-shaped system, guarantees the rigidity of the part of encorbelmenting and the high requirement that the horizontal segment encorbelmented.
In the construction of a nuclear island containment equipment gate in a Bakistan Kalazi K-2/K-3 nuclear power project K3, a steel platform is welded by a 'Mi' shaped support 5 in an inner shell equipment gate, a construction technology that a shell room and one side of a fuel plant are taken as construction platforms is adopted, and the specific implementation is mainly divided into the following 6 major parts:
1. welding of platform columns
2. Welding and adjusting platform beam
3. Platform horizontal segment is in place and is welded
4. Laying of platform boards
5. Scaffold steel pipe or tower erection
6. Pouring of concrete
The construction method comprises the following steps that 1, 2 and 3 parts are welded and manufactured on site, 4 parts are construction platforms which are paved by battens and springboards after platform welding is completed, scaffold steel pipes or towers of the 5 th part can be erected for formwork erection and concrete pouring after the platforms are paved, the erection height of the scaffold steel pipes or towers is increased layer by layer along with construction layer by layer of equipment gate concrete, and the platforms are dismantled until the equipment gate construction is completed.
Practices of the Karagi 'Hualongyi' nuclear power plant prove that compared with the traditional construction technology, the construction technology of the invention not only reduces the erection height of scaffold steel pipes or towers and reduces safety risks, but also creates a time window for the construction of the shell and the circular wall of the fuel plant, shortens the time of constructing a key path of the nuclear power plant and creates greater economic and social benefits.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any person skilled in the art can make any simple modification, equivalent replacement, and improvement on the above embodiment without departing from the technical spirit of the present invention, and still fall within the protection scope of the technical solution of the present invention.

Claims (1)

1. The utility model provides a plain type nuclear power station equipment gate construction platform which characterized in that: the gate construction platform consists of three parts, including a platform upright post, a platform cross beam and a platform horizontal section, wherein a joint is arranged at the joint, and the upper part and the lower part of the gate construction platform are respectively connected with a 'meter' support and an equipment gate in the equipment gate; the horizontal section of the platform is connected with the equipment gate through a thick steel plate and two short angle steels on one side close to the gate; the platform horizontal section is positioned in the middle of the gate and is connected with the equipment gate through a platform upright post; the platform upright post below the horizontal section of the platform is connected with the equipment gate through a gusset plate; two angle steels are used as inclined struts between the overhanging parts of the horizontal sections of the platform and the platform upright columns;
in the connection of the platform horizontal section, a thick steel plate is vertically welded on the inner side of the equipment gate, two short angle steels are welded on the top of the thick steel plate to form a support of the platform horizontal section, and finally the platform horizontal section is welded on the support;
the platform horizontal section is two channel steels, and the platform horizontal section is welded with the platform upright post through a steel plate;
the platform upright column is provided with two channel steels, a gusset plate is welded between the two channel steels, and then the gusset plate is welded on the equipment gate;
the inclined struts are connected with the platform upright post through the gusset plate, and the gusset plate is welded between the platform upright post close to the outer side and the two angle steel inclined struts, so that the overhanging part forms a triangular system.
CN201810677660.1A 2018-06-27 2018-06-27 Simple nuclear power station equipment gate construction platform Active CN108979113B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810677660.1A CN108979113B (en) 2018-06-27 2018-06-27 Simple nuclear power station equipment gate construction platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810677660.1A CN108979113B (en) 2018-06-27 2018-06-27 Simple nuclear power station equipment gate construction platform

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Publication Number Publication Date
CN108979113A CN108979113A (en) 2018-12-11
CN108979113B true CN108979113B (en) 2021-07-02

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748659B (en) * 2019-09-27 2020-11-13 中广核工程有限公司 Nuclear power plant equipment gate

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201169904Y (en) * 2008-07-18 2008-12-24 山东金塔建设有限公司 Assembly type suspension supporting discharge platform
CN201695663U (en) * 2010-07-05 2011-01-05 南通永安建设工程有限公司 Adjustable overhung supporter for building construction
CN202810173U (en) * 2012-09-19 2013-03-20 中国核工业华兴建设有限公司 Mounting and construction platform for steel lining bracket and circular crane track girder of nuclear power plant
CN206308990U (en) * 2016-11-17 2017-07-07 中建三局第二建设工程有限责任公司 A kind of moveable overhanging type operating platform and construction system
CN206784942U (en) * 2017-04-25 2017-12-22 中天建设集团有限公司 One kind building recessed corridor high-altitude support for shuttering
CN207392716U (en) * 2017-09-27 2018-05-22 广西壮族自治区冶金建设公司 A kind of tool-type suspension scaffold

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201169904Y (en) * 2008-07-18 2008-12-24 山东金塔建设有限公司 Assembly type suspension supporting discharge platform
CN201695663U (en) * 2010-07-05 2011-01-05 南通永安建设工程有限公司 Adjustable overhung supporter for building construction
CN202810173U (en) * 2012-09-19 2013-03-20 中国核工业华兴建设有限公司 Mounting and construction platform for steel lining bracket and circular crane track girder of nuclear power plant
CN206308990U (en) * 2016-11-17 2017-07-07 中建三局第二建设工程有限责任公司 A kind of moveable overhanging type operating platform and construction system
CN206784942U (en) * 2017-04-25 2017-12-22 中天建设集团有限公司 One kind building recessed corridor high-altitude support for shuttering
CN207392716U (en) * 2017-09-27 2018-05-22 广西壮族自治区冶金建设公司 A kind of tool-type suspension scaffold

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