CN116876816A - Construction method of refuge layer at top of ultra-high atrium - Google Patents

Construction method of refuge layer at top of ultra-high atrium Download PDF

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Publication number
CN116876816A
CN116876816A CN202311093031.1A CN202311093031A CN116876816A CN 116876816 A CN116876816 A CN 116876816A CN 202311093031 A CN202311093031 A CN 202311093031A CN 116876816 A CN116876816 A CN 116876816A
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CN
China
Prior art keywords
altitude platform
constructing
refuge
layer
platform
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Pending
Application number
CN202311093031.1A
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Chinese (zh)
Inventor
陈浩
赵华颖
韩友强
李阳
林林
刘宇超
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Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
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Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
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Application filed by Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd filed Critical Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
Priority to CN202311093031.1A priority Critical patent/CN116876816A/en
Publication of CN116876816A publication Critical patent/CN116876816A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/40—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for coffered or ribbed ceilings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/02—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for rooms as a whole by which walls and floors are cast simultaneously, whole storeys, or whole buildings
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/066—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for overhangs
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/16—Members, e.g. consoles, for attachment to the wall to support girders, beams, or the like carrying forms or moulds for floors, lintels, or transoms
    • 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
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/246—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the inside contour of a building
    • 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
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • 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
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
    • E04H1/02—Dwelling houses; Buildings for temporary habitation, e.g. summer houses
    • E04H1/04—Apartment houses arranged in two or more levels

Abstract

The invention discloses a construction method of an evacuation layer at the top of an ultra-high atrium, which comprises the following steps: firstly, constructing a foundation and a basement part in the earlier stage, and then constructing a main building structure; building a high-altitude platform, namely locally dismantling a protective outer frame of the main building structure, and building the high-altitude platform on the top of the atrium; constructing a refuge layer, constructing a support frame on a high-altitude platform, supporting a formwork of a concrete pouring formwork after construction, pouring concrete after the formwork is supported, and removing the concrete pouring formwork after construction is completed; and step four, dismantling the high-altitude platform, dismantling a supporting frame on the high-altitude platform, connecting lifting equipment with the high-altitude platform, cutting the joint of the high-altitude platform and the top of the atrium, and conveying the cut whole high-altitude platform to a designated position through the lifting equipment. The method reduces the difficulty of high-altitude formwork support, shortens the construction period and increases the construction safety.

Description

Construction method of refuge layer at top of ultra-high atrium
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of an evacuation layer at the top of an ultra-high atrium.
Background
The high-altitude formwork supporting area of the residential tower is mainly concentrated in an overhead area of a refuge layer of the residential tower, an outer vertical surface local cantilever plate area and an ultrahigh atrium overhead position of a building design. In the high-altitude construction project, the high-altitude formwork is not only high in construction difficulty but also extremely high in danger, and especially, an atrium structure is also arranged in a high-rise building structure, so that on the premise of simplifying construction procedures and construction cycles, a high-altitude platform of a formwork support frame is needed to solve the problem.
Disclosure of Invention
The invention aims to provide a construction method of an refuge layer at the top of an ultra-high atrium, which solves the problem of high-altitude formwork supporting difficulty.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a construction method of an evacuation layer at the top of an ultra-high atrium comprises the following steps:
firstly, constructing a foundation and a basement part in the earlier stage, then constructing a main building structure, and suspending the construction of the main building structure when constructing to the lower layer of the floor where the refuge layer is located;
the plane outline of the main building structure is quadrilateral, an atrium is arranged in the middle of the main building structure, and the top of the atrium is a refuge layer of the main building structure; mounting holes are reserved on the walls on two sides of the top of the atrium;
building a high-altitude platform, namely locally dismantling a protective outer frame of the main building structure, and building the high-altitude platform on the top of the atrium;
the specific construction steps of the high-altitude platform are as follows:
s0, splicing the high-altitude platforms, wherein operators splice the high-altitude platforms on the ground;
s1, preparing a high-altitude platform before hoisting, dismantling a protective outer frame at the installation position of the high-altitude platform, and reserving the protective outer frame below the installation position of the high-altitude platform as an operation platform;
s2, hoisting the high-altitude platform, hoisting the assembled high-altitude platform to an installation position by using a tower crane, and adjusting the high-altitude platform by a rope or an operator to ensure that the high-altitude platform is smoothly installed in place;
s3, preparing after hoisting the high-altitude platform, welding a plurality of square tubes on the high-altitude operation platform, and installing a support frame above the square tubes through fasteners;
constructing a refuge layer, constructing a support frame on a high-altitude platform, supporting a formwork of a concrete pouring formwork after construction, pouring concrete after the formwork is supported, and removing the concrete pouring formwork after construction is completed;
the construction of the refuge layer specifically comprises the following construction steps of:
a0, constructing a support frame, namely constructing a first support frame for constructing the refuge floor slab on the high-altitude platform, wherein the support frame body of the first support frame is higher than the position of the refuge floor slab, and externally hanging a dense mesh net at the higher part of the first support frame body as a temporary edge protection for concrete pouring;
a1, supporting a concrete pouring template, namely supporting the concrete pouring template of the refuge floor slab above a first support frame for constructing the refuge floor slab;
a2, concrete pouring is carried out, after the formwork is supported, concrete pouring is carried out to form a refuge layer floor slab, and then the concrete pouring template of the refuge layer floor slab is removed;
a3, carrying out subsequent construction, namely pulling a plurality of safety ropes between the high-altitude platform and the refuge floor slab, building an outer overhanging climbing frame on the high-altitude platform, and continuing to construct an upper main structure;
the construction of the refuge layer specifically comprises the construction of a refuge layer cantilever plate, and the construction steps are as follows:
b0, constructing a support frame, supporting a plurality of support rods at overhanging parts below the high-altitude platform, constructing a second support frame for constructing a refuge layer overhanging plate on the high-altitude platform, wherein the top of the support frame body of the second support frame is higher than the position of a refuge layer floor slab, and externally hanging a dense mesh net at the higher part as a border protection for concrete pouring;
b1, supporting a concrete pouring template, namely supporting the concrete pouring template of the refuge layer cantilever plate above a second support frame for construction of the refuge layer cantilever plate;
b2, concrete pouring is carried out, after the formwork is supported, concrete pouring is carried out to form a refuge layer cantilever plate, and then the refuge layer cantilever plate concrete pouring formwork is removed;
and step four, dismantling the high-altitude platform, dismantling a supporting frame on the high-altitude platform, installing a hanging basket below the constructed refuge floor slab, selecting a hoisting point on the high-altitude platform, connecting hoisting equipment with the high-altitude platform, cutting the joint of the high-altitude platform and the atrium top by an operator taking the hanging basket, and conveying the cut whole high-altitude platform to a designated position through the hoisting equipment.
Preferably, in the second step, the high-altitude platform comprises a platform frame, a plurality of connecting rods and a plurality of diagonal braces, the platform frame is mounted on the diagonal braces through the connecting rods, the platform frame comprises a plurality of cross rods and a plurality of longitudinal rods, the longitudinal rods are arranged below the cross rods arranged at parallel intervals in parallel, the diagonal braces comprise four diagonal brace supporting legs, the four diagonal brace supporting legs are arranged at intervals in two groups of splayed shapes, the tops of each group of splayed shapes are connected through one connecting rod, and the diagonal brace supporting legs are connected with one end of the connecting rod through a diagonal brace support; the cross rod is made of I-steel, and a plurality of positioning ribs are vertically arranged on the cross rod.
Preferably, the high-altitude platform spans and installs in the atrium roof both sides, bracing landing leg bottom and the connecting rod both ends are all installed in reserving the wall body upper mounting hole that sets up in atrium roof both sides.
Preferably, connecting ribs are pre-buried in the mounting holes; the bottom of the diagonal bracing supporting leg is provided with a connecting cross rod, and the diagonal bracing supporting leg is connected with the connecting rib through the connecting cross rod.
Preferably, in the third step, the upright rods forming the support frame for constructing the refuge floor slab are connected with the positioning ribs.
Preferably, in the third step, the upright rods forming the support frame for constructing the cantilever plate of the shelter layer are connected with the positioning ribs.
In the invention, the middle and lower parts of the main building structure are left and right independent parts, the interval area between the two independent parts is an atrium, and in order to simplify the construction process and shorten the construction period in construction, the protective outer frame and the climbing frame of the middle and lower part of the main building structure can be constructed by only depending on the left and right independent parts, and when the main building structure is constructed to the top of the atrium, the outer protective climbing frame can be partially disassembled, and an overhead platform is constructed between the left and right independent parts forming the atrium, and the construction of the refuge layer and the upper main building structure is carried out by depending on the overhead platform, thereby reducing the construction difficulty. When the refuge layer above the atrium is of a common floor structure, a first support frame can be built by means of the high-altitude platform, a refuge layer formwork is supported and concrete pouring is carried out on the first support frame, a plurality of safety ropes are tied between the high-altitude platform and a refuge layer bottom plate after the refuge layer construction is completed, so that the safety of the high-altitude platform is improved, then the high-altitude platform can be used as a support frame foundation, construction of an upper-layer main building structure is continued, and construction difficulty and risk are reduced; when the refuge layer above the atrium is in a cantilever structure, the platform frame of the high-altitude platform needs to be subjected to applicability adjustment according to the cantilever length of the cantilever plate of the refuge layer, so that the cantilever part below the high-altitude platform is supported with a plurality of support rods for improving the safety of the high-altitude platform, and the high-altitude platform is reinforced and then is subjected to construction of a second support frame and concrete casting molding.
Drawings
FIG. 1 is a schematic plan view of the main building structure of the present invention;
FIG. 2 is a schematic construction diagram of a second step of the present invention;
FIG. 3 is a schematic view of another construction view of the second step of the present invention;
FIG. 4 is a schematic view of a third construction step of the present invention;
FIG. 5 is a schematic view of the construction of the refuge layer in the third step of the present invention, specifically, the construction of the refuge layer cantilever plate;
in the figure: 1. a main building structure; 2. a high-altitude platform; 3. a dense mesh net; 4. a support frame; 5. a support rod; 10. a refuge layer; 11. an atrium; 110. a mounting hole; 111. a connecting rib; 20. a platform stand; 21. a connecting rod; 22. a diagonal bracing frame; 40. a first support frame; 41. a second support frame; 200. a cross bar; 201. a longitudinal bar; 202. positioning ribs; 220. diagonal bracing support legs; 221. and connecting the cross bars.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
a construction method of an evacuation layer at the top of an ultra-high atrium comprises the following steps:
firstly, pre-construction, namely constructing a foundation and a basement part, then constructing a main building structure 1, and suspending the construction of the main building structure 1 when constructing to the lower layer of the storey where the refuge layer 10 is positioned;
in this example, as shown in fig. 1, the plane outline of the main building structure 1 is quadrilateral, an atrium 11 is arranged in the middle of the main building structure 1, and the top of the atrium 11 is the refuge layer 10 of the main building structure 1; mounting holes 110 are reserved on the walls on two sides of the top of the atrium 11;
step two, building a high-altitude platform 2, namely, partially dismantling a protective outer frame of a main building structure as shown in fig. 2 and 3, and building the high-altitude platform 2 at the top of an atrium 11;
in this example, the high-altitude platform 2 comprises a platform frame 20, a plurality of connecting rods 21 and a plurality of diagonal braces 22, wherein the platform frame 20 is installed on the diagonal braces 22 through the connecting rods 21, the platform frame 20 comprises a plurality of cross rods 200 and a plurality of longitudinal rods 201, the longitudinal rods 201 are arranged below the cross rods 200 which are arranged at parallel intervals, the diagonal braces 22 comprises four diagonal brace legs 220, the four diagonal brace legs 220 are arranged at two groups of splayed intervals, the tops of each group of splayed are connected through one connecting rod 21, and the diagonal brace legs 220 are connected with one end of the connecting rod 21 through diagonal brace supports; the cross bar 200 is made of I-steel, and a plurality of positioning ribs 202 are vertically arranged on the cross bar 200. The high-altitude platform 2 is transversely arranged at the two sides of the top of the atrium 11, and the bottom ends of the diagonal bracing legs 220 and the two ends of the connecting rods 21 are arranged in the wall body upper mounting holes 110 reserved at the two sides of the top of the atrium 11. Connecting ribs 111 are pre-embedded in the mounting holes 110; the bottom of the diagonal brace supporting leg 220 is provided with a connecting cross rod 221, the diagonal brace supporting leg 220 is connected with the connecting rib 111 through the connecting cross rod 221, and the connecting cross rod 221 is connected with the connecting rib 111 through welding.
The specific construction steps of the high-altitude platform 2 are as follows:
s0, assembling the high-altitude platform 2, wherein an operator assembles the high-altitude platform 2 on the ground;
s1, preparing before hoisting the high-altitude platform 2, dismantling a protective outer frame at the installation position of the high-altitude platform 2, and reserving the protective outer frame below the installation position of the high-altitude platform 2 as an operation platform;
s2, hoisting the high-altitude platform 2, hoisting the assembled high-altitude platform 2 to an installation position by using a tower crane, and adjusting the high-altitude platform 2 by a rope or an operator to ensure that the high-altitude platform 2 is smoothly installed in place;
s3, preparing after hoisting the high-altitude platform 2, welding a plurality of square tubes on the high-altitude operation platform, and installing a support frame 4 above the square tubes through fasteners;
constructing a refuge layer, constructing a support frame 4 on a high-altitude platform, supporting a formwork of a concrete pouring formwork after construction, pouring concrete after the formwork is completed, and dismantling the concrete pouring formwork after construction is completed, see fig. 4;
the construction of the refuge layer is specifically the construction of a refuge layer floor, and the construction steps are as follows:
a0, building a support frame 4, building a first support frame 40 for constructing the refuge floor slab on the high-altitude platform 2, wherein in the example, the upright rods forming the first support frame 40 for constructing the refuge floor slab are connected with the positioning ribs 202, the first support frame 40 is higher than the position of the refuge floor slab, and the outer hanging dense mesh net 3 is used as the edge protection of concrete pouring at the higher part;
a1, supporting a concrete pouring template, namely supporting the concrete pouring template of the refuge floor slab above a first support frame 40 for constructing the refuge floor slab;
a2, concrete pouring is carried out, after the formwork is supported, concrete pouring is carried out to form a refuge layer floor slab, and then the concrete pouring template of the refuge layer floor slab is removed;
a3, carrying out subsequent construction, namely pulling a plurality of safety ropes between the high-altitude platform 2 and the refuge floor slab, building an outer overhanging climbing frame on the high-altitude platform 3, and continuing to construct the upper main structure 1;
the construction of the refuge layer specifically comprises the construction of a refuge layer cantilever plate, referring to fig. 5, the construction steps are as follows:
b0, building a support frame 4, supporting a plurality of support rods 5 at overhanging positions below the high-altitude platform 2, building a second support frame 41 for constructing a refuge layer overhanging plate on the high-altitude platform 2, wherein the top of a frame body of the second support frame 41 is higher than the position of a refuge layer floor slab, and externally hanging a dense mesh net 3 at the higher part as a temporary edge protection for concrete pouring; in this example, the upright rods of the second support frame 41 for constructing the shelter layer cantilever plate are connected with the positioning ribs 202;
b1, supporting a concrete pouring template, namely supporting the concrete pouring template of the refuge layer cantilever plate above a second supporting frame 41 for constructing the refuge layer cantilever plate;
b2, concrete pouring is carried out, after the formwork is supported, concrete pouring is carried out to form a refuge layer cantilever plate, and then the refuge layer cantilever plate concrete pouring formwork is removed;
and step four, dismantling the high-altitude platform 2, dismantling a support frame 4 on the high-altitude platform 2, installing a hanging basket below the constructed refuge floor slab, selecting a hoisting point on the high-altitude platform 2, connecting hoisting equipment with the high-altitude platform 2, cutting the joint of the high-altitude platform 2 and the top of the atrium 11 by an operator taking the hanging basket, and conveying the cut whole high-altitude platform 2 to a designated position through the hoisting equipment.
The above embodiments are only a few descriptions of the inventive concept and implementation, and are not limited thereto, and the technical solutions without substantial transformation remain within the scope of protection under the inventive concept.

Claims (6)

1. The construction method of the refuge layer at the top of the ultra-high atrium is characterized by comprising the following steps of:
firstly, constructing a foundation and a basement part in the early stage, then constructing a main building structure (1), and suspending the construction of the main building structure (1) when constructing to the lower layer of the floor where the refuge layer (10) is positioned;
the plane outline of the main building structure (1) is quadrilateral, an atrium (11) is arranged in the middle of the main building structure (1), and the top of the atrium (11) is a refuge layer (10) of the main building structure (1); mounting holes (110) are reserved on the wall bodies on two sides of the top of the atrium (11);
building a high-altitude platform (2), locally dismantling a protective outer frame of the main building structure, and building the high-altitude platform (2) on the top of an atrium (11);
the specific construction steps of the high-altitude platform (2) are as follows:
s0, assembling the high-altitude platform (2), wherein an operator assembles the high-altitude platform (2) on the ground;
s1, preparing before hoisting the high-altitude platform (2), dismantling a protective outer frame at the installation position of the high-altitude platform (2), and reserving the protective outer frame below the installation position of the high-altitude platform (2) as an operation platform;
s2, hoisting the high-altitude platform (2), hoisting the assembled high-altitude platform (2) to an installation position by using a tower crane, and adjusting the high-altitude platform (2) by a rope or an operator to ensure that the high-altitude platform (2) is smoothly installed in place;
s3, preparing after hoisting the high-altitude platform (2), welding a plurality of square tubes on the high-altitude operation platform, and installing a support frame (4) above the square tubes through fasteners;
constructing a refuge layer, constructing a support frame (4) on a high-altitude platform, supporting a formwork of a concrete pouring formwork after construction, pouring concrete after the formwork is supported, and removing the concrete pouring formwork after construction is completed;
the construction of the refuge layer specifically comprises the following construction steps of:
a0, constructing a support frame (4), constructing a first support frame (40) for constructing a refuge floor slab on a high-altitude platform (2), wherein the support frame body of the first support frame (40) is higher than the position of the refuge floor slab, and externally hanging a dense mesh net (3) at the higher part of the first support frame as a temporary edge protection for concrete pouring;
a1, supporting a concrete pouring template, namely supporting the concrete pouring template of the refuge floor slab above a first support frame (40) for constructing the refuge floor slab;
a2, concrete pouring is carried out, after the formwork is supported, concrete pouring is carried out to form a refuge layer floor slab, and then the concrete pouring template of the refuge layer floor slab is removed;
a3, carrying out subsequent construction, namely pulling a plurality of safety ropes between the high-altitude platform (2) and the refuge floor slab, building an outer cantilever climbing frame on the high-altitude platform (3), and continuing to construct an upper main structure (1);
the construction of the refuge layer specifically comprises the construction of a refuge layer cantilever plate, and the construction steps are as follows:
b0, constructing a support frame (4), supporting a plurality of support rods (5) at overhanging parts below the high-altitude platform (2), constructing a second support frame (41) for constructing a refuge layer cantilever plate on the high-altitude platform (2), wherein the top of a frame body of the second support frame (41) is higher than the position of a refuge layer floor slab, and externally hanging a dense mesh net (3) at the higher part as a temporary edge protection for concrete pouring;
b1, supporting a concrete pouring template, namely supporting the concrete pouring template of the refuge layer cantilever plate above a second supporting frame (41) for constructing the refuge layer cantilever plate;
b2, concrete pouring is carried out, after the formwork is supported, concrete pouring is carried out to form a refuge layer cantilever plate, and then the refuge layer cantilever plate concrete pouring formwork is removed;
and step four, dismantling the high-altitude platform (2), dismantling a support frame (4) on the high-altitude platform (2), installing a hanging basket below a constructed refuge floor slab, selecting a hoisting point on the high-altitude platform (2), connecting hoisting equipment with the high-altitude platform (2), cutting the joint of the high-altitude platform (2) and the top of the atrium (11) by an operator taking the hanging basket, and conveying the cut whole high-altitude platform (2) to a designated position through the hoisting equipment.
2. The method for constructing an evacuation layer at the top of an ultra-high atrium according to claim 1, wherein: in the second step, the high-altitude platform (2) comprises a platform frame (20), a plurality of connecting rods (21) and a plurality of diagonal braces (22), wherein the platform frame (20) is arranged on the diagonal braces (22) through the connecting rods (21), the platform frame (20) comprises a plurality of cross rods (200) and a plurality of longitudinal rods (201), the longitudinal rods (201) are arranged below the cross rods (200) which are arranged at parallel intervals, the diagonal braces (22) comprise four diagonal brace legs (220), the four diagonal brace legs (220) are arranged at two groups of splayed intervals, the tops of each group of splayed shapes are connected through one connecting rod (21), and one ends of the diagonal brace legs (220) and one ends of the connecting rods (21) are connected through diagonal brace supports; the cross rod (200) is made of I-steel, and a plurality of positioning ribs (202) are vertically arranged on the cross rod (200).
3. The method for constructing an evacuation layer at the top of an ultra-high atrium according to claim 2, wherein: the high-altitude platform (2) is transversely arranged on the two sides of the top of the atrium (11), and the bottom ends of the diagonal bracing supporting legs (220) and the two ends of the connecting rods (21) are respectively arranged in mounting holes (110) on the wall body reserved on the two sides of the top of the atrium (11).
4. A method of constructing an evacuation layer at the roof of an ultra-high atrium according to claim 3, wherein: connecting ribs (111) are embedded in the mounting holes (110); the bottom of the diagonal bracing support leg (220) is provided with a connecting cross rod (221), and the diagonal bracing support leg (220) is connected with the connecting rib (111) through the connecting cross rod (221).
5. The method for constructing an evacuation layer at the top of an ultra-high atrium according to claim 1, wherein: in the third step, the upright rods of the first support frame (40) for constructing the refuge floor are connected with the positioning ribs (202).
6. The method for constructing an evacuation layer at the top of an ultra-high atrium according to claim 1, wherein: in the third step, the upright rods of the second support frame (41) for constructing the suspension plates of the shelter layer are connected with the positioning ribs (202).
CN202311093031.1A 2023-08-29 2023-08-29 Construction method of refuge layer at top of ultra-high atrium Pending CN116876816A (en)

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