CN114776029A - Construction operation method and system for outer curtain wall of corridor of high-altitude large-span building - Google Patents

Construction operation method and system for outer curtain wall of corridor of high-altitude large-span building Download PDF

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Publication number
CN114776029A
CN114776029A CN202210419611.4A CN202210419611A CN114776029A CN 114776029 A CN114776029 A CN 114776029A CN 202210419611 A CN202210419611 A CN 202210419611A CN 114776029 A CN114776029 A CN 114776029A
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CN
China
Prior art keywords
construction
rope
corridor
hoisting
hanging
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
CN202210419611.4A
Other languages
Chinese (zh)
Inventor
张博
李玲
徐士杰
胡晓光
王火华
刘俊峰
徐小琴
彭焜
宿佩君
戴婉婷
张恩会
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.)
Third Construction Co Ltd of China Construction Third Engineering Division
Original Assignee
Third Construction Co Ltd of China Construction Third Engineering Division
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 Third Construction Co Ltd of China Construction Third Engineering Division filed Critical Third Construction Co Ltd of China Construction Third Engineering Division
Priority to CN202210419611.4A priority Critical patent/CN114776029A/en
Priority to PCT/CN2022/094840 priority patent/WO2023201837A1/en
Publication of CN114776029A publication Critical patent/CN114776029A/en
Pending legal-status Critical Current

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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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/18—Implements for finishing work on buildings for setting wall or ceiling slabs or 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
    • E04G21/162—Handles to carry construction blocks
    • 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
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • 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
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
    • E04G3/32—Hoisting devices; Safety devices
    • 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

Abstract

The invention discloses a construction operation method and a system for an outer curtain wall of an overhead large-span building corridor, wherein a truss is supported and matched on rails on two sides through a bottom travelling mechanism, a winch and a cantilever are arranged on two sides of the top of the truss, a guide wheel train for installing a lifting rope and a guide wheel train for installing a transfer rope are arranged on the cantilever, and the transfer rope is driven by the winch; the hoisting machine drives the hoisting construction platform to ascend to the position near the bottom of the corridor through a hoisting rope, a longitudinal bottom construction hanging rope is arranged near the bottom of the corridor, and the safety rope is hung on the bottom construction hanging rope to carry out corridor bottom ceiling construction; lifting machine on the hanging flower basket drives the hanging flower basket through the hoisting rope and rises to the vestibule side, hangs the rope with safe rope and side construction and is connected and carry out vestibule side curtain construction, and construction material transports the rope through the hoist engine drive of place side and makes a round trip to transport between ground and construction area and obtain. The system realizes the integrated construction of the bottom suspended ceiling and the side curtain wall, and the material transfer and installation construction under the state that constructors do not fall to the ground.

Description

Construction operation method and system for outer curtain wall of corridor of high-altitude large-span building
Technical Field
The invention belongs to the field of building construction, and particularly relates to a construction operation method and system for an outer curtain wall of an overhead large-span building corridor.
Background
The traditional building corridor outer curtain wall generally adopts hanging baskets, movable gun trucks, truck cranes and scaffolds as construction operation platforms, but in the construction operation of the outer curtain wall of the high-altitude large-span building corridor, if the movable gun trucks and the truck cranes are adopted, the operation height and the load capacity are insufficient, and safety hazards exist.
Disclosure of Invention
The invention aims to provide a construction operation method and a system for an outer curtain wall of an overhead large-span building corridor, which realize the integrated construction of a suspended ceiling at the bottom of the overhead large-span building corridor and a side curtain wall, realize the material transfer and installation construction under the condition that constructors do not fall to the ground, and have convenient and safe operation and short construction period.
The technical scheme adopted by the invention is as follows:
a construction operation method for an outer curtain wall of a high-altitude large-span building corridor comprises the following steps of 1) installing a top walking lifting device: the method comprises the following steps that an embedded part is arranged at the top of a reversed beam concrete structure at the top of a corridor, H-shaped steel is welded and fixed to the upper portion of the embedded part after construction of a corridor main body is completed, a track is arranged on the upper portion of the H-shaped steel, the track is longitudinally arranged on two sides of the corridor in a through mode, a transverse truss is installed in a hanging mode, the truss is supported and matched on the tracks on two sides through traveling mechanisms on two sides of the bottom, the traveling mechanisms can travel along the track, can be locked and can prevent side turning, a winch and an overhanging cantilever are arranged on two sides of the top of the truss, a guide wheel train for installing a lifting rope and a guide wheel train for installing a transfer rope are arranged on the cantilever, and the transfer rope is driven to lift and lock by the winch on the side where the transfer rope is located; 2) constructing the bottom of the corridor: placing a transverse hoisting construction platform under the corridor, arranging hoisters at two ends of the hoisting construction platform, respectively connecting the hoisters at two ends with hoisting ropes at the sides, driving the hoisting construction platform to ascend to the position near the bottom of the corridor through the hoisting ropes, arranging longitudinal bottom construction hanging ropes near the bottom of the corridor, connecting two ends of the bottom construction hanging ropes with a main body structure and transversely distributing the bottom construction hanging ropes, hanging safety ropes on the bottom construction hanging ropes on the hoisting construction platform by constructors to perform corridor bottom ceiling construction, and moving a traveling mechanism for a distance after construction of one area is completed to drive the hoisting construction platform to enter the next area until the bottom construction is completed; 3) constructing the side surface of the corridor: transfer hoist and mount construction platform and fall to the ground, remove the connection with the lifting rope, be connected the lifting rope with the lifting machine on the hanging flower basket of place side, lifting machine on the hanging flower basket drives the hanging flower basket through the lifting rope and rises to the vestibule side, be connected with the side construction on the truss and hang the rope, constructor is on the hanging flower basket, hang the rope with safe rope and side construction and be connected and carry out vestibule side curtain construction, construction material transports the rope through the hoist engine drive of place side and makes a round trip to transport between ground and construction area and obtains, one section regional construction is accomplished the back, running gear removes one section distance, drive the hanging flower basket and get into next region, accomplish until the side construction.
Further, during corridor side construction, in the transportation construction material process, to fossil fragments, adopt to hang after perforating and hang, to the jumbo size panel, adopt electric chuck to lift by crane, to the small-size material, adopt hopper cooperation bandage to lift by crane.
Furthermore, running gear includes by motor drive's walking wheel and carries out the anticreep wheel of controlling spacing.
Further, running gear still includes strengthens anticreep board, strengthens anticreep board and stretches into the outside groove of H shaped steel and extend to the top flange board downside of H shaped steel from the outside top.
A high-altitude large-span building corridor external curtain wall construction operation system comprises a top walking lifting device, a hoisting construction platform, a hanging basket and a safety device; the top walking lifting device comprises an embedded part arranged at the top of a reversed beam concrete structure at the top of the corridor, H-shaped steel welded and fixed at the upper part of the embedded part, a rail arranged at the upper part of the H-shaped steel and a transverse truss, wherein the rail is longitudinally arranged on two sides of the corridor in a through manner, the truss is supported and matched on the rails on two sides through traveling mechanisms on two sides of the bottom, the traveling mechanisms can travel along the rail, lock and prevent side turning, a winch and an overhanging cantilever are arranged on two sides of the top of the truss, a guide wheel train for installing a lifting rope and a guide wheel train for installing a transfer rope are arranged on the cantilever, and the transfer rope is driven to lift and lock by the winch on the side and is used for transferring construction materials back and forth between the ground and a construction area; the hoisting construction platform is transversely arranged right below the corridor, the two ends of the hoisting construction platform are provided with hoists, and the hoists at the two ends are respectively connected with the hoisting ropes at the sides of the hoists during construction; the lifting machine is arranged on the hanging basket and is connected with the lifting rope on the side where the lifting machine is located during construction; safety device includes that the rope is hung in the bottom construction and the rope is hung in the side construction, and the rope is hung in the bottom construction and is located near the vestibule bottom, vertically sets up, both ends and major structure are connected, along transverse distribution for hang the safety rope when the construction of vestibule bottom, the rope is hung in the side construction and establishes on the truss, connect the safety rope when being used for the construction of vestibule side.
Furthermore, running gear includes by motor drive's walking wheel and carries out the anticreep wheel of controlling spacing.
Further, running gear still includes strengthens anticreep board, strengthens anticreep board and stretches into the outside groove of H shaped steel and extend to the top flange board downside of H shaped steel from the outside top.
The beneficial effects of the invention are:
the invention realizes the integrated construction of the bottom suspended ceiling and the side curtain wall of the corridor of the high-altitude large-span building, separates the carrying of constructors and construction materials, can carry out full-plane transfer on the bottom and the side surfaces, realizes the material transfer and installation construction under the condition that the constructors do not fall to the ground, and has short construction period, convenient and safe operation, stable platform, high load and strong high-altitude wind resistance.
Drawings
Fig. 1 is an elevation view of an embodiment of the invention in the construction of the bottom of a corridor (for ease of viewing, the hoist and the guide train to which the transfer line is attached have been removed).
Figure 2 is a side view of an embodiment of the invention when constructing the bottom of a corridor (for ease of viewing, the hoist and the guide train to which the transfer line is attached have been removed).
Fig. 3 is a schematic view of the side installation of large-size panels in a corridor according to an embodiment of the present invention (the elevator is removed for easy viewing).
Fig. 4 is a schematic view of the side installation of small-sized materials in the vestibule (the elevator is removed for ease of viewing) according to an embodiment of the present invention.
Fig. 5 is a partial schematic view of a portion of a travel mechanism in an embodiment of the invention.
In the figure: 1-a truss; 2-a travelling mechanism; 3-a guide wheel train; 4-a cantilever; 5-a lifting rope; 6-hoisting machine; 7-hoisting the construction platform; 8-constructing a hanging rope at the bottom; 9-a winch; 10-a transfer line; 11-an electric suction cup; 12-constructing a hanging rope on the side surface; 13-hanging basket; 14-large size panel; 15-binding band; 16-a hopper; 17-a motor; 18-road wheels; 19-track; 20-H section steel; 21-reinforcing anti-drop plate.
Detailed Description
The invention is further illustrated by the following figures and examples.
A construction operation method for an outer curtain wall of a high-altitude large-span building corridor comprises the following steps:
1) installing a top walking lifting device: the method comprises the following steps that an embedded part is arranged at the top of a reversed beam concrete structure at the top of a corridor, after construction of a corridor main body is completed, H-shaped steel 20 is welded and fixed to the upper portion of the embedded part, rails 19 are arranged on the upper portion of the H-shaped steel 20, the rails 19 are arranged on two sides of the corridor in a longitudinal through mode, transverse trusses 1 are hung and installed, the trusses 1 are supported and matched on the rails 19 on two sides through travelling mechanisms 2 on two sides of the bottom, the travelling mechanisms 2 can travel along the rails 19, are locked and are prevented from turning on the side, a winch 9 and an overhanging cantilever 4 are arranged on two sides of the top of each truss 1, a guide wheel train 3 for installing a lifting rope 5 and a guide wheel train 3 for installing a transfer rope 10 are arranged on each cantilever 4, and the transfer rope 10 is driven to lift and lock by the winch 9 on the side;
2) constructing the bottom of the corridor: a transverse hoisting construction platform 7 is placed under a corridor, hoists 6 are arranged at two ends of the hoisting construction platform 7, the hoists 6 at two ends are respectively connected with hoisting ropes 5 on the sides, as shown in fig. 1 and fig. 2, the hoists 6 drive the hoisting construction platform 7 to ascend to the position near the bottom of the corridor through the hoisting ropes 5, longitudinal bottom construction hanging ropes 8 are arranged near the bottom of the corridor, two ends of the bottom construction hanging ropes 8 are connected with a main body structure and are distributed along the transverse direction, a constructor hangs safety ropes on the bottom construction hanging ropes 8 to conduct corridor bottom ceiling construction, after construction of one area is completed, a travelling mechanism 2 moves for a distance to drive the hoisting construction platform 7 to enter the next area until bottom construction is completed;
3) constructing the side surface of the corridor: the hoisting construction platform 7 is lowered to fall to the ground, the connection with the hoisting rope 5 is removed, the hoisting rope 5 is connected with a hoisting machine 6 on a hanging basket 13 on the side where the hoisting rope 5 is located, the hoisting machine 6 on the hanging basket 13 drives the hanging basket 13 to ascend to the side face of the corridor through the hoisting rope 5, as shown in fig. 3 and 4, the side face construction hanging rope 12 is connected to the truss 1, constructors are arranged on the hanging basket 13, the safety rope and the side face construction hanging rope 12 are connected to conduct curtain wall construction on the side face of the corridor, construction materials are obtained by driving the transport rope 10 to transport back and forth between the ground and a construction area through a hoisting machine 9 on the side where the construction materials are located, after construction of one area is completed, the travelling mechanism 2 moves one distance, the hanging basket 13 is driven to enter the next area, and the construction of the side face is completed.
In this embodiment, during the side construction of the corridor and during the process of transferring construction materials, a perforated hanging bracket is adopted for the keel, as shown in fig. 3, an electric suction cup 11 is adopted for the large-size panel 14 (such as a glass panel) as shown in fig. 4, and a hopper 16 is adopted for the small-size material (such as stone and aluminum plate) to be hung in cooperation with a binding belt 15.
As shown in fig. 5, in the present embodiment, the traveling mechanism 2 includes traveling wheels 18 driven by a motor 17 and an anti-drop wheel (not shown) for performing a left-right limit; running gear 2 still includes strengthens anticreep board 21, strengthens anticreep board 21 and stretches into the outside groove of H shaped steel 20 and extend to the top flange board downside of H shaped steel 20 from the outside top, plays the effect of strengthening the anticreep.
The invention realizes the integrated construction of the suspended ceiling at the bottom and the side curtain wall of the high-altitude large-span building corridor, separates the carrying of constructors and construction materials, and can carry out full-plane transfer at the bottom and the side, thereby realizing the material transfer and installation construction under the state that the constructors do not fall to the ground, and having short construction period, convenient and safe operation, stable platform, high load and strong high-altitude wind resistance.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (7)

1. A construction operation method for an outer curtain wall of a high-altitude large-span building corridor is characterized by comprising the following steps: comprising the steps of 1) installing a top walking lifting device: the method comprises the following steps that an embedded part is arranged at the top of a reversed beam concrete structure at the top of a corridor, H-shaped steel is welded and fixed to the upper portion of the embedded part after construction of a corridor main body is completed, a track is arranged on the upper portion of the H-shaped steel, the track is longitudinally arranged on two sides of the corridor in a through mode, a transverse truss is installed in a hanging mode, the truss is supported and matched on the tracks on two sides through traveling mechanisms on two sides of the bottom, the traveling mechanisms can travel along the track, can be locked and can prevent side turning, a winch and an overhanging cantilever are arranged on two sides of the top of the truss, a guide wheel train for installing a lifting rope and a guide wheel train for installing a transfer rope are arranged on the cantilever, and the transfer rope is driven to lift and lock by the winch on the side where the transfer rope is located; 2) constructing the bottom of the corridor: placing a transverse hoisting construction platform under the corridor, arranging hoists at two ends of the hoisting construction platform, respectively connecting the hoists at the two ends with hoisting ropes at the sides, driving the hoisting construction platform to ascend to the position near the bottom of the corridor through the hoisting ropes, arranging longitudinal bottom construction hanging ropes near the bottom of the corridor, connecting two ends of the bottom construction hanging ropes with a main body structure and transversely distributing the bottom construction hanging ropes, hanging safety ropes on the bottom construction hanging ropes by constructors on the hoisting construction platform to carry out corridor bottom ceiling construction, and moving a traveling mechanism for a certain distance after one section of area construction is finished to drive the hoisting construction platform to enter the next area until the bottom construction is finished; 3) constructing the side surface of the corridor: transfer hoist construction platform and fall to the ground, remove being connected with the lifting rope, be connected the lifting rope with the lifting machine on the hanging flower basket of place side, lifting machine on the hanging flower basket drives the hanging flower basket through the lifting rope and rises to the vestibule side, it hangs the rope to be connected with the side construction on the truss, constructor is on the hanging flower basket, hang the rope with safe rope and side construction and be connected and carry out vestibule side curtain construction, construction material transports the rope through the hoist engine drive of place side and makes a round trip to transport between ground and construction area and obtains, one section regional construction is accomplished the back, one section distance of running gear removal, it gets into next region to drive the hanging flower basket, accomplish until the side construction.
2. The construction method of the curtain wall outside the corridor of the high-altitude large-span building as claimed in claim 1, characterized in that: during corridor side construction, transport the construction material in-process, to fossil fragments, adopt to hang after perforating and hang, to the jumbo size panel, adopt electric chuck to lift by crane, to the small-size material, adopt hopper cooperation bandage to lift by crane.
3. The construction method of the curtain wall outside the corridor of the high-altitude large-span building as claimed in claim 1, characterized in that: the walking mechanism comprises a walking wheel driven by a motor and an anti-drop wheel for limiting left and right.
4. The construction method of the curtain wall outside the corridor of the high-altitude large-span building as claimed in claim 1, characterized in that: running gear still includes strengthens the anticreep board, strengthens the anticreep board and stretches into the outside groove of H shaped steel and extend to the top flange board downside of H shaped steel from the outside top.
5. The utility model provides a high altitude large-span building vestibule outer curtain wall construction operating system which characterized in that: the lifting device comprises a top walking lifting device, a hoisting construction platform, a hanging basket and a safety device; the top walking lifting device comprises an embedded part arranged at the top of a reversed beam concrete structure at the top of the corridor, H-shaped steel welded and fixed at the upper part of the embedded part, a rail arranged at the upper part of the H-shaped steel and a transverse truss, wherein the rail is longitudinally arranged on two sides of the corridor in a through manner, the truss is supported and matched on the rails on two sides through traveling mechanisms on two sides of the bottom, the traveling mechanisms can travel along the rail, lock and prevent side turning, a winch and an overhanging cantilever are arranged on two sides of the top of the truss, a guide wheel train for installing a lifting rope and a guide wheel train for installing a transfer rope are arranged on the cantilever, and the transfer rope is driven to lift and lock by the winch on the side and is used for transferring construction materials back and forth between the ground and a construction area; the hoisting construction platform is transversely arranged right below the corridor, the two ends of the hoisting construction platform are provided with hoists, and the hoists at the two ends are respectively connected with the hoisting ropes at the sides of the hoists during construction; the lifting machine is arranged on the hanging basket and is connected with the lifting rope on the side where the lifting machine is located during construction; safety device includes that the rope is hung in the bottom construction and the rope is hung in the side construction, and the rope is hung in the bottom construction and is located near the vestibule bottom, vertically sets up, both ends and major structure are connected, along transverse distribution for hang the safety rope when the construction of vestibule bottom, the rope is hung in the side construction and establishes on the truss, connect the safety rope when being used for the construction of vestibule side.
6. The high-altitude large-span building corridor outer curtain wall construction operation system of claim 5, wherein: the walking mechanism comprises a walking wheel driven by a motor and an anti-drop wheel for limiting left and right.
7. The high-altitude large-span building corridor outer curtain wall construction operation system of claim 5, wherein: running gear still includes strengthens the anticreep board, strengthens the anticreep board and stretches into the outside groove of H shaped steel and extend to the top flange board downside of H shaped steel from the outside top.
CN202210419611.4A 2022-04-20 2022-04-20 Construction operation method and system for outer curtain wall of corridor of high-altitude large-span building Pending CN114776029A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202210419611.4A CN114776029A (en) 2022-04-20 2022-04-20 Construction operation method and system for outer curtain wall of corridor of high-altitude large-span building
PCT/CN2022/094840 WO2023201837A1 (en) 2022-04-20 2022-05-25 Construction operation method and system for outer curtain walls of high-altitude large-span building corridor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210419611.4A CN114776029A (en) 2022-04-20 2022-04-20 Construction operation method and system for outer curtain wall of corridor of high-altitude large-span building

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CN114776029A true CN114776029A (en) 2022-07-22

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CN109653481A (en) * 2019-01-21 2019-04-19 济南四建（集团）有限责任公司 A kind of hanging rail formula high-altitude operation platform and production method
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115306137A (en) * 2022-08-22 2022-11-08 北京建工四建工程建设有限公司 Operation platform structure for mounting suspended ceiling at bottom of overhead corridor and construction method thereof
CN115306137B (en) * 2022-08-22 2023-07-07 北京建工四建工程建设有限公司 Operation platform structure for installing suspended ceiling at bottom of high-altitude corridor and construction method thereof

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