CN113863715B - Building structure reverse-operation demolition method and building structure reverse-operation demolition auxiliary equipment - Google Patents

Building structure reverse-operation demolition method and building structure reverse-operation demolition auxiliary equipment Download PDF

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Publication number
CN113863715B
CN113863715B CN202111192328.4A CN202111192328A CN113863715B CN 113863715 B CN113863715 B CN 113863715B CN 202111192328 A CN202111192328 A CN 202111192328A CN 113863715 B CN113863715 B CN 113863715B
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building
dismantled
columns
floor
column
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CN113863715A (en
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马明磊
阴光华
欧亚洲
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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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    • 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
    • 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
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/242Safety or protective measures preventing damage to building parts or finishing work during construction for temporarily covering the whole worksite, e.g. building, trench
    • 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
    • E04G23/082Wrecking of buildings using shears, breakers, jaws and the like
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00Fencing, e.g. fences, enclosures, corrals

Abstract

The invention discloses a building structure reverse-operation demolition method and a building structure reverse-operation demolition auxiliary device, wherein a building is demolished in a reverse-operation mode from bottom to top, the building to be demolished is integrally settled by using a hydraulic jack, a bottom floor is demolished while the building descends, dust raising and construction pollutant diffusion are perfectly prevented through a scaffold net rack and a fully-closed dustproof enclosure structure, noise is greatly reduced, because demolition is carried out on a lower layer, the original building waste can be sorted in a classified mode, high reutilization is easy to realize, blasting and high-altitude operation are avoided, and a temporary core barrel with a water-resisting horizontal force resisting measure is arranged, so that demolition construction safety is improved. The invention solves the problems of high-altitude operation and high construction difficulty in the traditional method for dismantling the high-rise or super high-rise building with the frame structure.

Description

Building structure reverse-operation demolition method and building structure reverse-operation demolition auxiliary equipment
Technical Field
The invention relates to the technical field of building construction, in particular to a building structure reverse-operation dismantling method and building structure reverse-operation dismantling auxiliary equipment.
Background
In the demolition construction of high-rise or super high-rise buildings with frame structures, the traditional demolition of buildings adopts blasting demolition or demolition from top to bottom layer by layer.
The demolition speed of the blasting demolition building is high, but the demolition speed has certain influence on the surrounding environment, evaluation is needed, the conditionality is limited, and the remaining waste materials after blasting are mixed and are difficult to sort, classify and recycle, and the environmental pollution is great during blasting.
Demolish from the upper portion downwards, high altitude construction, the operation difficulty is big, and the people's wood machine energy is difficult to transmit and goes up, and the waste material is difficult to transfer, and the not good very easily high altitude raise dust pollution environment of closed processing.
Disclosure of Invention
In order to overcome the defects in the prior art, a building structure reverse-operation dismantling method and building structure reverse-operation dismantling auxiliary equipment are provided so as to solve the problems of high-altitude operation and high construction difficulty in the traditional dismantling of high-rise or super high-rise buildings with frame structures.
In order to achieve the aim, the building structure reverse-construction dismantling method comprises the following steps:
a. respectively forming a through hole in a multi-layer floor slab at the lower part of a building to be dismantled to form a pouring space which is communicated up and down, and installing a dustproof enclosure structure outside the building to be dismantled;
b. pouring in the pouring space to form a temporary core tube;
c. installing a force transmission structure on the upper part of a circle of plate beams of the to-be-dismantled building surrounding the temporary core barrel, wherein the force transmission structure comprises a plurality of cuffs and a connecting beam, the cuffs are respectively detachably sleeved on a plurality of frame columns of the to-be-dismantled building, the frame columns are arranged along the circumferential direction of the temporary core barrel, the connecting beam is connected between two adjacent cuffs and is placed on the circle of plate beams, and the inner side of the connecting beam abuts against the outer edge of the top of the temporary core barrel;
d. installing a plurality of temporary support columns in the to-be-dismantled floor of the to-be-dismantled building, so that the temporary support columns are supported on the plate beam on the upper floor of the to-be-dismantled floor;
e. cutting off a frame column of the building to be dismantled, corresponding to a column section in the range of the floor to be dismantled, and supporting a hydraulic jack at the column bottom of the cut frame column;
f. dismantling the wall and the horizontal member in the floor to be dismantled;
g. removing the force transmission structure and breaking a floor slab corresponding to the upper part of the temporary core cylinder;
h. contracting the hydraulic jack to enable the building to be disassembled to sink;
i. and d, repeating the steps c-h to demolish the building to be demolished layer by layer from bottom to top.
Furthermore, a plurality of socket through grooves are formed in the outer portion of the temporary core barrel, the socket through grooves are arranged at intervals along the circumferential direction of the temporary core barrel, the socket through grooves are arranged along the axial direction of the temporary core barrel, the inner side of the connecting beam is connected with the inserting columns, and the inserting columns are detachably embedded in the socket through grooves.
Further, cutting off treat that the frame post of tearing open the building corresponds to treat when tearing open the post section in the floor scope, will be the many that the matrix was arranged frame post divide into nuclear core post, encircle in many satellite posts and adjacent two of nuclear core post edge post between the satellite post of nuclear core post, and cut off in proper order nuclear core post edge post satellite post.
Further, the distance between the temporary supporting column and the column section is smaller than or equal to two times of the diameter of the column section.
Furthermore, an inlet and an outlet are formed in the lower portion of the dustproof enclosure structure, and an electric sliding door is mounted at the inlet and the outlet.
Furthermore, a bearing plate is installed at the top of the hydraulic jack, and the bearing plate is supported at the column bottom of the frame column.
The invention provides a building structure reverse-operation dismantling auxiliary device, which comprises:
the dustproof enclosure structure is enclosed outside the building to be dismantled;
the building to be dismantled is internally provided with a vertically through pouring space, and the temporary core tube is poured in the pouring space;
the force transmission structure comprises a plurality of cuffs and a connecting beam, the cuffs are respectively detachably sleeved on a plurality of frame columns of the to-be-dismantled building, the frame columns are arranged along the circumferential direction of the temporary core cylinder, the connecting beam is connected between two adjacent cuffs and is placed on a circle of plate beams of the to-be-dismantled building, the circle of plate beams surrounds the temporary core cylinder, and the inner side of the connecting beam abuts against the outer edge of the top of the temporary core cylinder;
the temporary support columns are detachably supported on the plate beam on the upper floor of the floor to be dismantled; and
and the hydraulic jack is supported at the column bottom of the frame column with the cut-off partial column section in the floor to be dismantled of the building to be dismantled.
The invention has the beneficial effect that the building structure reverse-construction demolition method is a reverse-construction type building demolition method, and demolishs the building from the lower part. The building to be dismantled is wholly settled by using the hydraulic jack, and the building descends while the bottom floor is dismantled. Through scaffold net frame and totally enclosed dustproof envelope, the perfect raise dust and the diffusion of construction pollutant are prevented, reduce the noise by a wide margin. Because offer in the lower floor and demolish, former construction waste can sort, easily realizes highly recycling, removes the energy resource consumption of blasting and lift heavy equipment from, and the overall process reduces the energy waste, reduces carbon emission, energy saving and emission reduction, green. The building structure reverse-operation dismantling method avoids blasting and high-altitude operation, is provided with the temporary core barrel for resisting horizontal force, and improves the dismantling construction safety.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a building structure reverse-operation demolition aid according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a temporary core barrel according to an embodiment of the present invention.
FIG. 3 is a top view of a temporary core barrel of an embodiment of the invention.
Fig. 4 to 7 are schematic views illustrating the frame post cutting steps according to the embodiment of the present invention.
Fig. 8 is a schematic partitioning diagram of the frame columns according to the embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 8, the present invention provides a method for dismantling a building structure in a reverse manner, comprising the steps of:
a. and respectively forming a through hole on the multilayer floor slab 1 at the lower part of the building A to be dismantled so as to form a vertically-through pouring space, and installing a dustproof enclosure structure 2 outside the building A to be dismantled.
In the present embodiment, as shown in fig. 1 and 8, the building to be dismantled is a high-rise frame structure, and specifically includes frame columns 7, a floor slab 1, and shear walls. The bottom of the floor slab 1 is poured to form a plate girder 11.
When the through hole is formed, the through hole is formed in the multi-layer floor slab at the lower part of the building to be dismantled, and the through hole is arranged in the center of the plane of the floor slab.
And a plurality of layers of floor slabs arranged at the lower part of the building to be dismantled are provided with through holes which are communicated up and down to form a pouring space which is vertically arranged.
Referring to fig. 1, in the present embodiment, the building to be dismantled includes an above-ground structure and an underground structure, and the multiple floors at the lower part of the building to be dismantled are a top floor of a basement (i.e., a floor of a bottom floor 1F), a floor of a first floor 2F, a floor of a third floor 3F, and a floor of a fourth floor 4F, respectively.
b. And pouring in the pouring space to form the temporary core barrel 3.
The temporary core tube is poured at the bottom of the building to be dismantled. Specifically, the lower part of the temporary core tube is disposed in the underground structure, and the upper part of the temporary core tube is disposed in four layers of the above-ground structure.
Specifically, the temporary core barrel 3 has a quadrangular prism shape. The temporary core tube is arranged among the four frame columns.
c. A force transmission structure 4 is arranged on the upper portion of a circle of plate beams of a building A to be disassembled and surrounding a temporary core barrel 3, the force transmission structure 4 comprises a plurality of hoops 41 and a connecting beam 42, the hoops 41 are respectively detachably sleeved on a plurality of frame columns 7 of the building A to be disassembled and arranged along the circumferential direction of the temporary core barrel 3, the connecting beam 42 is connected between two adjacent hoops 41 and is placed on a circle of plate beams 11, and the inner side of the connecting beam 42 is abutted against the outer edge of the top of the temporary core barrel 3.
In this embodiment, the force transfer structure is of steel construction. The four hoop members are respectively sleeved outside the four frame columns, and specifically, referring to fig. 1, the hoop members are sleeved outside the column sections of the frame columns corresponding to the fourth floor. The connecting beam rests on the plate beam 11 of the floor slab of the fourth floor. The force transfer structure is rectangular.
As a preferred embodiment, the exterior of the temporary core barrel 3 is formed with a plurality of female through slots 30. The plurality of socket through grooves 30 are arranged at intervals in the circumferential direction of the temporary core barrel 3. Each of the socket through slots 30 is provided in the axial direction of the temporary core barrel 3. The connection beam 42 is connected at its inner side with a plug-in stud 43. The plug column 43 is detachably inserted into the socket through groove 30.
The force transfer structure is pressed against the outer side of the temporary core cylinder through the inserting columns arranged on the inner sides of the connecting beams, so that the building to be dismantled serves as a temporary anchoring structure for resisting horizontal forces such as seismic force.
The temporary core tube is a reinforced concrete shear wall, such as a frame shear structure, and a part of the core tube shear wall in the middle of the structure can be selected as a temporary anti-seismic structure, but the outer surface needs to be subjected to chiseling and recessing treatment.
The force transfer structure is made of profile steel, the hoops at four corners are arranged outside the frame columns, the connecting beams at four sides are arranged on the plate beams, and a plurality of convex wedge-shaped inserting columns (the number of the inserting columns is determined according to the length of the structure) at each side are embedded into the socket-joint through grooves of the shear wall of the temporary core barrel and are clamped tightly, so that the force transfer structure transfers the received horizontal load to the shear wall of the temporary core barrel.
d. And installing a plurality of temporary support columns 5 in the to-be-dismantled floor of the to-be-dismantled building A, so that the temporary support columns 5 are supported on the plate beam 11 on the upper floor of the to-be-dismantled floor.
Specifically, referring to fig. 4, in the present embodiment, the demolition sequence of each floor of the building to be demolished is demolition from bottom to top layer by layer.
When the bottom floor is removed, a plurality of temporary support columns are installed in the first floor, and the temporary support columns 5 are supported on the plate beam 11 on the upper floor of the floor to be removed (namely the plate beam on the floor of the second floor).
In a preferred embodiment, the distance between the temporary support column 5 and the column section 70 is less than or equal to two times the diameter of the column section 70.
e. The frame column 7 of the building A to be dismantled is cut off and corresponds to the column section 70 in the range of the floor to be dismantled, and the hydraulic jack 6 is supported at the column bottom of the cut-off frame column 7.
Referring to fig. 4 to 7, when the pillars within each floor range are cut, the pillars within each floor range are cut in batches while being cut in segments from bottom to top.
As shown in fig. 4, after the lower part of the column section in each floor range is cut, the hydraulic jack is supported at the bottom of the column, and then the column sections of other frame columns in the floor range are cut.
As shown in fig. 5, the middle of the column section of the frame column is cut; as shown in fig. 6, to remove the middle of the column section of the frame column that is cut away; as shown in fig. 7, the telescopic end of the hydraulic jack is extended and supported at the bottom of the column. A bearing plate 61 is installed on the top of the hydraulic jack 6, and the bearing plate 61 is supported on the bottom of the frame column 7.
Specifically, when all the frame columns are divided into three parts and the corresponding column sections in each floor range are cut off, the column sections in each floor range are cut off in batches in sequence.
Referring to fig. 8, which is a schematic cross-sectional view of a building to be dismantled, a plurality of frame columns of the building to be dismantled are arranged in a matrix. When the column sections of the frame columns in the same floor range are cut off, the plurality of frame columns 7 are divided into a core column 71, a plurality of satellite columns 72 and a plurality of edge columns 73. A plurality of satellite columns 72 surround the core column 71. The periphery of each core column is surrounded by a plurality of satellite columns to form a circular or sector area, and between two adjacent circular or sector areas is an edge column 73.
When the frame columns 7 of the building a to be dismantled are cut off and correspond to the column sections 70 in the range of the floors to be dismantled, the cutting-off sequence of the core column 71, the edge column 73 and the satellite column 72 is as follows: the core column 71, the edge column 73 and the satellite column 72 are cut off.
f. And (4) dismantling the walls and the horizontal members in the floors to be dismantled.
Before frame columns are cut off, horizontal members and shear walls of a building to be dismantled are dismantled, a dustproof enclosure structure is built, and an inlet and an outlet are formed in the lower portion of the dustproof enclosure structure. The inlet and the outlet are provided with sliding doors. The medium and small-sized demolition machines enter the floor to be demolished in a mode of lifting or pouring a temporary external ramp or a channel 8 by a platform outside the dustproof enclosure structure in cooperation with a crane. And laying steel plates under the driving route of the medium-sized machine.
The building dismantling machine is cooperated with manpower to dismantle the secondary structure and the decorative component of the floor to be dismantled, then the horizontal beam plate component is dismantled, and waste materials are concentrated. The lower sliding door of the dust enclosure is opened and the waste is transported out through the temporary lift 9 or an external ramp, after which the sliding door is closed again.
g. And (4) removing the force transmission structure 4 and breaking the floor 1 corresponding to the upper part of the temporary core cylinder 3.
h. The hydraulic jacks 6 are retracted so that the building a to be dismantled sinks.
In this embodiment, take 2F and 3F as examples, take a floor slab of 2F as a support, after the floor slab of 3F is removed, the floor slab of 2F is removed in a reversed manner, and after the machine and the temporary support column are removed, the height of 4F is reduced to the original 2F by the contraction of the hydraulic jack and is flush with the external platform or the external ramp. Meanwhile, the upper layer of the building to be dismantled is dismantled in advance, and a secondary structure, a decorative component and the like can be dismantled in advance through manual work and small-sized machine tool equipment operation modes by means of a temporary elevator.
i. And c, repeating the steps c-h to dismantle the building A to be dismantled layer by layer from bottom to top.
The invention discloses a reverse construction demolition method of a building structure, which is a reverse construction type building demolition method and is used for demolishing a building from the lower part.
The building to be dismantled is wholly settled by using the hydraulic jack, and the building descends while the bottom floor is dismantled. Through scaffold net frame and totally enclosed dustproof envelope, prevent raise dust and construction pollutant diffusion, reduce the noise by a wide margin.
Due to the fact that the lower layer is opened for dismantling, the original building waste can be sorted in a classified mode, high recycling is easy to achieve, energy consumption of blasting and lifting heavy equipment is omitted, energy waste is reduced in the whole process, carbon emission is reduced, energy is saved, emission is reduced, and the environment is protected. The building structure reverse-operation dismantling method avoids blasting and high-altitude operation, is provided with the temporary core barrel for resisting horizontal force, and improves the dismantling construction safety.
The invention provides a building structure reverse-operation dismantling auxiliary device which comprises a dustproof enclosing structure, a temporary core cylinder, a force transmission structure, a plurality of temporary supporting columns and a hydraulic jack.
The dustproof enclosure structure is enclosed outside the building to be dismantled. The dustproof enclosure structure comprises an outer scaffold and a dustproof net. The outer scaffold is erected on the ground outside the building to be dismantled and is provided with a circle along the circumferential direction of the building to be dismantled. The dust screen is installed in the outside of outer scaffold frame and sets up the closed dust screen panel that forms of round along the circumferential direction of outer scaffold frame.
The temporary core tube is poured in the pouring space. Before a building to be dismantled is dismantled, the multilayer floor slab at the bottom of the building to be dismantled is provided with through holes to form a vertically-through pouring space, a temporary core cylinder is poured in the pouring space, and the bottom of the temporary core cylinder is fixed in a foundation. The temporary core tube is poured at the bottom of the building to be dismantled. In this embodiment, the lower portion of the temporary core barrel is disposed in the underground structure and the upper portion of the temporary core barrel is disposed in four levels of the above-ground structure. Specifically, the temporary core tube 3 has a quadrangular prism shape. The temporary core tube is arranged among the four frame columns.
The building to be dismantled is dismantled layer by layer from bottom to top, the building to be dismantled is continuously settled, and the floor slab corresponding to the upper part of the temporary core barrel in the building to be dismantled is provided with through holes, so that the building to be dismantled can smoothly sink.
The force transfer structure includes a plurality of ferrules and a connecting beam. The hoops are respectively detachably sleeved on a plurality of frame columns which are arranged along the circumferential direction of the temporary core tube of the building to be dismantled, the connecting beam is connected between the two adjacent hoops and is placed on a circle of plate beam surrounding the temporary core barrel of the building to be dismantled, and the inner side of the connecting beam is abutted against the outer edge of the top of the temporary core barrel.
In this embodiment, the force transfer structure is of steel construction. The four hoops are respectively sleeved outside the four frame columns, and specifically, the hoops are sleeved outside the column sections of the frame columns corresponding to the four floors. The connecting beam rests on the plate beam 11 of the floor slab of the fourth floor. The force transmission structure is rectangular. A plurality of socket through slots 30 are formed in the exterior of the temporary core barrel 3. The plurality of socket through grooves 30 are arranged at intervals in the circumferential direction of the temporary core barrel 3. Each of the socket through slots 30 is provided in the axial direction of the temporary core barrel 3. The connection beam 42 is connected at its inner side with a plug-in stud 43. The plug column 43 is detachably inserted into the socket through groove 30.
The temporary support columns are detachably supported on the plate beam on the upper floor of the storey to be dismantled.
The hydraulic jack is supported at the column bottom of the frame column with the cut-off partial column section in the storey to be dismantled of the building to be dismantled. Specifically, after the plurality of temporary support columns are supported on the plate girder on the upper floor of the floor to be dismantled, the column sections of the frame columns in the floor to be dismantled are cut off by using cutting equipment, and the hydraulic jacks are supported at the column bottoms of the frame columns of which part of the column sections are cut off. And then, dismantling the temporary support column, contracting the hydraulic jack to settle the building to be dismantled, and circularly reciprocating in the way, and dismantling the building to be dismantled layer by layer from bottom to top.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (7)

1. A building structure reverse-construction dismantling method is characterized by comprising the following steps:
a. respectively forming a through hole in a multi-layer floor slab at the lower part of a building to be dismantled to form a pouring space which is communicated up and down, and installing a dustproof enclosure structure outside the building to be dismantled;
b. pouring in the pouring space to form a temporary core tube;
c. installing a force transmission structure on the upper part of a circle of plate beams of the to-be-dismantled building surrounding the temporary core barrel, wherein the force transmission structure comprises a plurality of cuffs and a connecting beam, the cuffs are respectively detachably sleeved on a plurality of frame columns of the to-be-dismantled building, the frame columns are arranged along the circumferential direction of the temporary core barrel, the connecting beam is connected between two adjacent cuffs and is placed on the circle of plate beams, and the inner side of the connecting beam abuts against the outer edge of the top of the temporary core barrel;
d. installing a plurality of temporary support columns in the to-be-dismantled floor of the to-be-dismantled building, so that the temporary support columns are supported on the plate girder on the upper floor of the to-be-dismantled floor;
e. cutting off a column section of the frame column of the building to be dismantled corresponding to the range of the floor to be dismantled, and supporting a hydraulic jack at the column bottom of the cut frame column;
f. dismantling walls and horizontal members in the floor to be dismantled;
g. removing the force transmission structure and breaking a floor corresponding to the upper part of the temporary core tube;
h. retracting the hydraulic jack to enable the building to be dismantled to sink;
i. and d, repeating the steps c-h to demolish the building to be demolished layer by layer from bottom to top.
2. The building structure demolition method according to claim 1, wherein a plurality of socket through grooves are formed in an outer portion of the temporary core barrel, the plurality of socket through grooves are arranged at intervals in a circumferential direction of the temporary core barrel, the socket through grooves are arranged in an axial direction of the temporary core barrel, an insertion column is connected to an inner side of the connection beam, and the insertion column is detachably embedded in the socket through grooves.
3. The method as claimed in claim 1, wherein when the frame columns of the building to be dismantled are cut off corresponding to the column sections within the range of the floor to be dismantled, the plurality of frame columns arranged in a matrix form are divided into core columns, a plurality of satellite columns surrounding the core columns, and edge columns between the satellite columns of two adjacent core columns, and the core columns, the edge columns, and the satellite columns are cut off in sequence.
4. The building structure demolition method according to claim 1, characterized in that the distance between the temporary support column and the column section is less than or equal to two times the diameter of the column section.
5. The method of claim 1, wherein the dust-proof enclosure has an access opening at a lower portion thereof, and the access opening is provided with a power-operated sliding door.
6. The building structure demolition method according to claim 1 wherein a cap plate is installed on top of the hydraulic jack, the cap plate being supported at a bottom of the frame column.
7. An auxiliary equipment for reverse construction and demolition of a building structure, comprising:
the dustproof enclosure structure is enclosed outside the building to be dismantled;
the building to be dismantled is internally provided with a vertically through pouring space, and the temporary core tube is poured in the pouring space;
the force transmission structure comprises a plurality of cuffs and a connecting beam, the cuffs are respectively detachably sleeved on a plurality of frame columns of the to-be-dismantled building, the frame columns are arranged along the circumferential direction of the temporary core cylinder, the connecting beam is connected between two adjacent cuffs and is placed on a circle of plate beams of the to-be-dismantled building, the circle of plate beams surrounds the temporary core cylinder, and the inner side of the connecting beam abuts against the outer edge of the top of the temporary core cylinder;
the temporary support columns are detachably supported on the plate beam on the upper floor of the floor to be dismantled; and
and the hydraulic jack is supported at the column bottom of the frame column with the cut part of the column section in the storey to be dismantled of the building to be dismantled.
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CN108678423B (en) * 2018-08-06 2023-12-08 中建研科技股份有限公司 Vertical conversion supporting structure is demolishd in reverse direction to reinforced concrete structure
CN110439318B (en) * 2019-08-22 2021-07-13 哈尔滨工业大学 Vertical conversion method for reverse demolition of existing building
CN113027167A (en) * 2021-03-19 2021-06-25 中建八局天津建设工程有限公司 Environment-friendly demolition method for high-rise building

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