CN108868161B - Staggered construction method for external attachment landing type tower crane of super high-rise building structure - Google Patents
Staggered construction method for external attachment landing type tower crane of super high-rise building structure Download PDFInfo
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- CN108868161B CN108868161B CN201811080040.6A CN201811080040A CN108868161B CN 108868161 B CN108868161 B CN 108868161B CN 201811080040 A CN201811080040 A CN 201811080040A CN 108868161 B CN108868161 B CN 108868161B
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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
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/28—Climbing forms, i.e. forms which are not in contact with the poured concrete during lifting from layer to layer and which are anchored in the hardened concrete
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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
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
Abstract
The invention discloses a staggered construction method of an externally attached landing tower crane of a super high-rise building structure, which comprises the following steps: firstly, mounting and positioning a double-floor type tower crane; secondly, attaching a first tower crane of the first floor type tower crane to a wall; thirdly, jacking the first floor type tower crane; fourthly, lifting the core barrel; constructing a steel structure outer frame and attaching a second tower crane of a second floor type tower crane to a wall; sixthly, jacking a second floor type tower crane; seventhly, lifting the core barrel again; eighth, the outer frame of the steel structure is constructed again; and ninthly, regarding the (N + 2) th layer structure of the steel structure outer frame as the Nth layer structure of the steel structure outer frame, and circulating the step two. The invention utilizes two floor type tower cranes which are commonly used to be arranged in a staggered way up and down on the outer vertical surface of the building to carry out alternate jacking construction, reduces the engineering investment of construction units, is not limited by regional power supply, is economical and reasonable, is convenient and safe to mount and dismount, promotes the construction technical level of super high-rise buildings, and provides reference and basis for the construction of similar buildings in the industry.
Description
Technical Field
The invention belongs to the technical field of floor type tower crane construction, and particularly relates to a staggered construction method of an externally attached floor type tower crane of a super high-rise building structure.
Background
With the continuous rise of the super high-rise buildings in our country, various tower cranes are arranged in hundreds of flowers, and the development and application of tower cranes are more, however, in the face of the increasing super high-rise building requirements, the tower crane industry still has many problems: because of the product model classification standard, main parameters such as lifting speed, rotation speed, amplitude variation speed, walking speed, jacking speed, lifting capacity, lifting moment and the like, and geometrical dimensions such as supporting leg span, tail part turning radius and the like of the lower turning tower crane are strictly regulated, so that the technical progress of the tower crane is severely limited. In the current market, under the comprehensive restriction of the aspects of regional economic level, engineering input level of construction units, urban power supply capacity of project areas, economic capacity of construction units and the like, in the case of super high-rise building construction below 300 meters in height, the project cost of the construction units and the construction units can be greatly increased by adopting schemes of movable arm type tower cranes, arranging internal climbing type tower cranes in reinforced concrete core cylinders of the super high-rise building and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a staggered construction method of the landing tower crane attached to the outside of the super high-rise building structure, aiming at the defects in the prior art, two commonly used floor type tower cranes are arranged in a staggered manner up and down on the outer vertical surface of the building for alternate jacking construction, so that the engineering investment of construction units is reduced, the use load of electric quantity is greatly reduced, the limitation of regional power supply is avoided, the construction technology level of the super high-rise building is promoted, reference and basis are provided for the construction of the same kind of buildings in the industry, and the popularization and the use are convenient.
In order to solve the technical problems, the invention adopts the technical scheme that: a staggered construction method of an externally attached landing tower crane of a super high-rise building structure is characterized by comprising the following steps:
step one, installing and positioning a double-floor type tower crane: in the construction of the super high-rise building structure, two floor-type tower cranes with free cantilevers with heights exceeding M floors are selected, a first floor-type tower crane and a second floor-type tower crane are installed and positioned before the construction of the super high-rise building structure foundation according to a site and a surrounding environment, the work division cooperative construction of the first floor-type tower crane and the second floor-type tower crane covers the range of the super high-rise building structure foundation, and the structural construction of a core barrel is completed at the top end of a building in the construction process of the super high-rise building structure by any one of the first floor-type tower crane and the second floor-type tower crane, wherein M is a positive number;
step two, attaching a first tower crane of the first floor type tower crane to a wall: before the first tower crane of first console mode tower crane attaches to the wall and adheres to, the construction of the nth layer structure of outer frame of steel construction finishes and the construction of the (N + 1) th layer structure of a core section of thick bamboo finishes, the creeping formwork built-in fitting of creeping formwork is pre-buried in the (N + 1) th layer structure of a core section of thick bamboo, the creeping formwork covers P layer floor, the tower crane elevation position of first console mode tower crane is not less than the top position of creeping formwork, the distance between the tower crane elevation position of the top of creeping formwork and the second console mode tower crane is a1In the unit of m;
performing first tower crane wall attachment on the first floor type tower crane, wherein the first tower crane wall attachment is attached to the Nth layer structure of the steel structure outer frame;
wherein N is a positive integer and N is not less than 2, and P is a positive integer;
step three, jacking the first floor type tower crane: jacking the first floor type tower crane to ensure that the distance between the top of the creeping formwork and the tower crane elevation position of the first floor type tower crane is b1In the unit of m, b1＞a1；
Step four, lifting the core barrel: promote Q layer floor to a core section of thick bamboo, at this moment, the number of piles of a core section of thick bamboo is N +1+ Q layer, and the distance between the top of creeping formwork and the tower crane elevation position of first console mode tower crane is b2In the unit of m, wherein Q is a positive integer and
c is the height of a single floor, the unit is m, rho is a proportionality coefficient and is 0<ρ<1；
Step five, constructing a steel structure outer frame and attaching a second tower crane of a second floor type tower crane to a wall: constructing the steel structure outer frame to lift the steel structure outer frame to Q floors, wherein the number of the steel structure outer frame layers is N + Q floors;
performing second tower crane wall attachment on a second floor type tower crane, wherein the second tower crane wall attachment is attached to the (N + Q) th layer structure of the steel structure outer frame;
step six,Jacking of a second floor type tower crane: jacking the second floor type tower crane to ensure that the distance between the top of the creeping formwork and the tower crane elevation position of the second floor type tower crane is a2In the unit of m, wherein a2＝b1；
Seventhly, lifting the core barrel again: promote Q layer floor again to a core section of thick bamboo, at this moment, the number of piles of a core section of thick bamboo is N +1+2Q layer, and the distance between the top of creeping formwork and the tower crane elevation position of second console mode tower crane is a1；
Step eight, re-constructing the steel structure outer frame: the steel structure outer frame is constructed again, so that the steel structure outer frame can lift Q floors again, and at the moment, the number of layers of the steel structure outer frame is N +2Q layers;
step nine, regarding the (N + 2) th layer structure of the steel structure outer frame as the Nth layer structure of the steel structure outer frame;
step ten, circulating the step two to the step nine.
The staggered construction method of the landing tower crane attached to the outside of the super high-rise building structure is characterized by comprising the following steps of: the floor type tower crane is a flat arm type floor type tower crane.
The staggered construction method of the landing tower crane attached to the outside of the super high-rise building structure is characterized by comprising the following steps of: the creeping formwork is a hydraulic self-creeping formwork.
The staggered construction method of the landing tower crane attached to the outside of the super high-rise building structure is characterized by comprising the following steps of: q is 2 or 3, and P is 4-6.
The staggered construction method of the landing tower crane attached to the outside of the super high-rise building structure is characterized by comprising the following steps of: and the proportionality coefficient rho is 0.4-0.6.
The staggered construction method of the landing tower crane attached to the outside of the super high-rise building structure is characterized by comprising the following steps of: and fifthly, when the steel structure outer frame is constructed in the step eight, the construction of the steel structure outer frame is completed in a matched mode in which the first floor type tower crane and the second floor type tower crane are in division cooperation.
Compared with the prior art, the invention has the following advantages:
1. the tower crane adopts two common floor type tower cranes, the selection of the tower cranes is economic and reasonable, the double floor type tower cranes are arranged on the outer vertical surface of the building in a staggered manner up and down, alternate jacking construction is carried out, the jacking of the floor type tower cranes and the arrangement of the tower crane attached to the wall have strict logic, the principle is reliable and stable, the construction period requirement is met, the construction effect is good, and the popularization and the use are convenient.
2. The invention adopts two common floor type tower cranes, greatly reduces the use load of electric quantity, is not limited by regional power supply, is economical and reasonable, has simple and convenient construction, convenient and safe installation and disassembly, promotes the construction technical level of super high-rise buildings, provides reference and basis for the construction of similar buildings in the industry, and can be widely applied to the construction of super high-rise buildings.
3. The method disclosed by the invention is simple in steps, the two floor type tower cranes are installed and positioned, the two floor type tower cranes are in cooperation with each other in a labor division manner to construct and cover the range of the structural foundation of the super high-rise building, any one of the two floor type tower cranes completes the structural construction of the core barrel at the top end of the building in the process of constructing the super high-rise building structure, the orderly construction of the super high-rise building structure is ensured, the construction of the core barrel and the outer frame of the steel structure is realized by alternately attaching and alternately jacking the tower cranes of the two floor type tower cranes to the wall, the vertical transportation problem of the super high-rise building is solved, the construction cost is reduced.
In conclusion, the two common floor type tower cranes are arranged on the outer vertical surface of the building in a vertically staggered manner for alternate jacking construction, so that the construction unit engineering investment is reduced, the use load of electric quantity is greatly reduced, the restriction of regional power supply is avoided, the construction method is economical and reasonable, the installation and the disassembly are convenient and safe, the construction technical level of the super high-rise building is promoted, reference and basis are provided for the construction of similar buildings in the industry, and the popularization and the use are convenient.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a block diagram of the process flow of the present invention.
Fig. 2 is a schematic structural diagram of jacking of the first floor type tower crane after the first tower crane of the first floor type tower crane is attached to a wall in the embodiment of the invention.
Fig. 3 is a schematic structural diagram of lifting of the core barrel in the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of construction of a steel structure outer frame and attachment of a second tower crane to a wall of the second floor type tower crane in the embodiment of the invention.
Fig. 5 is a schematic structural diagram of jacking of the second tower crane on the embodiment of the invention.
Fig. 6 is a schematic diagram of the re-lifting structure of the core barrel according to the embodiment of the present invention.
Fig. 7 is a schematic structural diagram of the reconstruction of the steel structure outer frame and the wall attachment of the first tower crane of the first floor type tower crane in the embodiment of the invention.
Fig. 8 is a schematic structural diagram of jacking of the first floor tower crane in the embodiment of the invention.
Description of reference numerals:
1-a first floor type tower crane; 2-a second floor type tower crane; 3-core cylinder;
4, climbing a mold; 5, a steel structure outer frame; 6, attaching a first tower crane to a wall;
and 7, attaching a second tower crane to a wall.
Detailed Description
As shown in fig. 1 to 8, the staggered construction method of the external landing type tower crane of the super high-rise building structure of the invention comprises the following steps:
step one, installing and positioning a double-floor type tower crane: in the construction of the super high-rise building structure, two floor-standing tower cranes with free cantilevers with heights exceeding M floors are selected, a first floor-standing tower crane 1 and a second floor-standing tower crane 2 are installed and positioned before the construction of the super high-rise building structure foundation according to a site and a surrounding environment, the first floor-standing tower crane 1 and the second floor-standing tower crane 2 are in division cooperative construction to cover the range of the super high-rise building structure foundation, and the top end of a building of any one of the first floor-standing tower crane 1 and the second floor-standing tower crane 2 finishes the structural construction of a core barrel 3 in the building process of the super high-rise building structure, wherein M is a positive number;
in this embodiment, the console mode tower crane is flat arm formula tower crane that falls to the ground.
The super high-rise building structure is a building with the floor number of more than 40 floors and the building height of more than 100 meters, and the super high-rise building structure usually occupies a larger area, the flat-arm type floor tower crane controls the position of a lifting hook through the rotation of a large arm and the distance of a trolley, the lifting capacity is related to the position of the trolley, the closer the tower body is, the larger the lifting capacity is, and the biggest advantage is that the lifting range is larger, so that the super high-rise building structure is suitable for construction, the flat-arm type floor tower crane has small use load on electric quantity, is not limited by regional power supply, is economical and reasonable, is simple and convenient to construct, is convenient and safe to mount and dismount, promotes the construction technical level of the super high-rise building, provides reference and basis for the construction of similar buildings in the industry, and can be widely applied to the super high; during practical use, the installation and positioning of the first floor type tower crane 1 and the second floor type tower crane 2 meet the requirement that the first floor type tower crane 1 and the second floor type tower crane 2 are cooperatively constructed in a labor division mode to cover the range of a super high-rise building structure foundation, any one of the first floor type tower crane 1 and the second floor type tower crane 2 finishes the structural construction of the core barrel 3 at the top end of a building in the building process of the super high-rise building structure, a blind zone is avoided in the construction, the orderly construction of the super high-rise building structure is ensured, the far end of the flat-arm floor type tower crane meets the requirement of one-time hoisting of a single-layer column, the near end meets the requirement of one-time hoisting of 2-3 layers of columns, the weight of each unit of the outrigger truss is in the range of the hoisting capacity of.
In actual construction, the foundation positioning of the double-floor type tower crane meets the following requirements: the bearing capacity of the foundation meets the standard matching foundation requirement of the tower crane, the peripheral field of the super high-rise building meets the size requirement of the standard matching foundation for installing the tower crane, the wall attaching distance of the tower crane is within a reasonable range, the hoisting operation of the nearest component is not influenced, and when the peripheral field of the super high-rise building does not meet the size requirement of the standard matching foundation of the tower crane, the design unit is combined with the design requirement of the foundation to additionally design the tower crane foundation; the bottom surface of the tower crane foundation is not higher than that of the building foundation, so that the settlement deformation caused by the unfavorable factors such as soaking of the tower foundation in water in construction is reduced; the plane position of the tower crane is positioned, and the sufficient safety distance between each part of the tower crane and a building structure and a construction formwork must be ensured.
Step two, attaching a first tower crane of the first floor type tower crane to a wall: before first tower crane of first console mode tower crane 1 attaches wall 6 and adheres to, the construction of the nth layer structure of outer frame 5 of steel construction finishes and the construction of the (N + 1) th layer structure of a core section of thick bamboo 3 finishes, the creeping formwork built-in fitting of creeping formwork 4 is pre-buried in the (N + 1) th layer structure of a core section of thick bamboo 3, creeping formwork 4 covers P floor, the tower crane elevation position of first console mode tower crane 1 is not less than the top position of creeping formwork 4, the distance between the top of creeping formwork 4 and the tower crane elevation position of second console mode tower crane 2 is a1In the unit of m;
performing first tower crane wall attachment 6 attachment on the first floor type tower crane 1, wherein the first tower crane wall attachment 6 is attached to the Nth layer structure of the steel structure outer frame 5;
wherein N is a positive integer and N is not less than 2, and P is a positive integer;
in this embodiment, the creeping formwork 4 is a hydraulic self-creeping formwork.
In the embodiment, Q is 2 or 3, and P is 4-6.
The tower crane attached wall is suitable to be arranged in the range of 500mm at the root of the outer frame column or directly arranged on the beam column node of the frame, and is installed by welding or clamping the column, and the design and installation requirements of manufacturers are met; for variable cross-section floors in super high-rise buildings, the effective height of a free cantilever at the upper part of a selected tower crane must be ensured to be covered, and a large arm operation space and a safe distance of the tower crane are reserved; and when the maximum free cantilever height of the upper part of the tower crane is reduced along with the increase of the building height by some tower crane manufacturers, the scheme design and construction are carried out according to the reduced effective height.
Step three, jacking the first floor type tower crane: jacking the first floor type tower crane 1 to ensure that the distance between the top of the creeping formwork 4 and the tower crane elevation position of the first floor type tower crane 1 is b1In the unit of m, b1＞a1；
Step four, lifting the core barrel: lifting Q floors of the core barrel 3, wherein the number of floors of the core barrel 3 is equal to that of the core barrelIs an N +1+ Q layer, the distance between the top of the creeping formwork 4 and the tower crane elevation position of the first floor type tower crane 1 is b2In the unit of m, wherein Q is a positive integer and
c is the height of a single floor, the unit is m, rho is a proportionality coefficient and is 0<ρ<1；
In the embodiment, the proportionality coefficient rho is 0.4-0.6.
In actual use, the preferable proportionality coefficient rho is 0.5, the creeping formwork 4 is arranged from the middle of the floor corresponding to the core barrel 3, and the construction is simple and efficient.
Step five, constructing a steel structure outer frame and attaching a second tower crane of a second floor type tower crane to a wall: constructing the steel structure outer frame 5 to enable the steel structure outer frame 5 to lift floors of Q layers, wherein the number of the layers of the steel structure outer frame 5 is N + Q layers;
performing second tower crane wall attachment 7 attachment on the second floor type tower crane 2, wherein the second tower crane wall attachment 7 is attached to the (N + Q) th layer structure of the steel structure outer frame 5;
in actual use, the double floor type tower cranes are arranged on the outer vertical surface of the building in a vertically staggered manner to perform alternate jacking construction, jacking of the floor type tower cranes and arrangement of the tower cranes attached to the wall are strict, the principle is reliable and stable, the requirements of the construction period are met, and the construction effect is good.
Step six, jacking a second floor type tower crane: jacking the second floor type tower crane 1 to ensure that the distance between the top of the creeping formwork 4 and the tower crane elevation position of the second floor type tower crane 2 is a2In the unit of m, wherein a2＝b1；
Seventhly, lifting the core barrel again: promote Q layer floor again to core section of thick bamboo 3, at this moment, the number of piles of a core section of thick bamboo 3 is N +1+2Q layer, and the distance between the top of creeping formwork 4 and the tower crane elevation position of second console mode tower crane 2 is a1；
Step eight, re-constructing the steel structure outer frame: the steel structure outer frame 5 is constructed again, so that the steel structure outer frame 5 can lift the floors of Q layers again, and at the moment, the number of the layers of the steel structure outer frame 5 is N +2Q layers;
in this embodiment, when the steel structure outer frame 5 is constructed in the fifth step and the eighth step, the construction of the steel structure outer frame 5 is completed in a coordinated manner by the first floor type tower crane 1 and the second floor type tower crane 2, so that the construction time is saved, and the construction period is shortened.
Step nine, regarding the (N + 2) th layer structure of the steel structure outer frame 5 as the Nth layer structure of the steel structure outer frame 5;
step ten, circulating the step two to the step nine.
When the method is used, the creeping formwork 4 covers four floors, and two floors are lifted to the core barrel 3 every time as an example, as shown in fig. 2, when the Nth layer structure of the steel structure outer frame 5 is constructed and the (N + 1) th layer structure of the core barrel 3 is constructed, the creeping formwork embedded part of the creeping formwork 4 is embedded in the (N + 1) th layer structure of the core barrel 3, the tower crane elevation position of the first floor type tower crane 1 is not lower than the top position of the creeping formwork 4, and the distance between the top of the creeping formwork 4 and the tower crane elevation position of the second floor type tower crane 2 is a1Performing first tower crane wall attachment 6 attachment on the first floor type tower crane 1, wherein the first tower crane wall attachment 6 is attached to the Nth layer structure of the steel structure outer frame 5; jacking the first floor type tower crane 1 to ensure that the distance between the top of the creeping formwork 4 and the tower crane elevation position of the first floor type tower crane 1 is b1；
As shown in fig. 3, two floors are lifted for the core tube 3, at this time, the number of floors of the core tube 3 is N +3 floors, the starting position of the creeping formwork 4 is located at the N +3 th floor of the core tube 3, and the distance between the top of the creeping formwork 4 and the tower crane elevation position of the first floor type tower crane 1 is b2；
As shown in fig. 4, the steel structure outer frame 5 is constructed to lift the steel structure outer frame 5 to two floors, and at this time, the number of the floors of the steel structure outer frame 5 is N + 2; performing second tower crane wall attachment 7 attachment on the second floor type tower crane 2, wherein the second tower crane wall attachment 7 is attached to the (N + 2) th layer structure of the steel structure outer frame 5;
as shown in fig. 5, the second tower crane floor 1 is lifted so that the distance between the top of the creeping formwork 4 and the tower crane elevation position of the second tower crane floor 2 is a2；
As shown in fig. 6, the core tube 3 is lifted again by two floors, at this time, the number of floors of the core tube 3 is N +5 floors, the starting position of the creeping formwork 4 is located at the N +5 th floor of the core tube 3, and the distance between the top of the creeping formwork 4 and the tower crane elevation position of the second floor type tower crane 2 is a1；
As shown in fig. 7, the steel structure outer frame 5 is constructed again, so that the steel structure outer frame 5 is lifted up to two floors again, and at this time, the number of floors of the steel structure outer frame 5 is N +4 floors; then, carrying out first tower crane wall attachment 6 attachment on the first floor type tower crane 1;
as shown in fig. 8, the first floor type tower crane 1 is lifted, so that the distance between the top of the creeping formwork 4 and the tower crane elevation position of the first floor type tower crane 1 is b1The N +4 th layer structure of the steel structure outer frame 5 is regarded as the N th layer structure of the steel structure outer frame 5, the parts above the N +4 th layer structure of the steel structure outer frame 5 in the figure are consistent with those in the figure 2, and therefore the staggered construction of the landing tower crane attached outside the super high-rise building structure is realized, the construction technology level of the super high-rise building is promoted, and reference and basis are provided for the construction of similar buildings in the industry.
In actual construction, more than two floor type tower cranes can be adopted according to the actual building plane area, field and surrounding environment, the jacking of the floor type tower cranes and the arrangement logic of the tower crane attached to the wall are designed, and staggered construction is implemented to carry out construction of the super high-rise building.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A staggered construction method of an externally attached landing tower crane of a super high-rise building structure is characterized by comprising the following steps:
step one, installing and positioning a double-floor type tower crane: in the construction of a super high-rise building structure, two floor-type tower cranes with free cantilevers with heights exceeding M floors are selected, a first floor-type tower crane (1) and a second floor-type tower crane (2) are installed and positioned before the construction of a super high-rise building structure foundation according to a site and a surrounding environment, the first floor-type tower crane (1) and the second floor-type tower crane (2) are constructed in a labor-division cooperation mode to cover the range of the super high-rise building structure foundation, and the top end of a building is constructed by the core barrel (3) when any one of the first floor-type tower crane (1) and the second floor-type tower crane (2) is constructed in the super high-rise building structure building process, wherein M is a positive number;
step two, attaching a first tower crane of the first floor type tower crane to a wall: before first tower crane of first console mode tower crane (1) attaches wall (6) and adheres to, the construction of the Nth floor structure of steel construction outer frame (5) finishes and the construction of the (N + 1) th floor structure of core section of thick bamboo (3) finishes, the creeping formwork built-in fitting of creeping formwork (4) is pre-buried in the (N + 1) th floor structure of core section of thick bamboo (3), creeping formwork (4) cover P layer floor, the tower crane elevation position of first console mode tower crane (1) is not less than the top position of creeping formwork (4), the distance between the top of creeping formwork (4) and the tower crane elevation position of second console mode tower crane (2) is a1In the unit of m;
attaching a first tower crane attaching wall (6) to the first floor type tower crane (1), wherein the first tower crane attaching wall (6) is attached to the Nth layer structure of the steel structure outer frame (5);
wherein N is a positive integer and N is not less than 2, and P is a positive integer;
step three, jacking the first floor type tower crane: jacking the first floor type tower crane (1) to ensure that the distance between the top of the creeping formwork (4) and the tower crane elevation position of the first floor type tower crane (1) is b1In the unit of m, b1＞a1；
Step four, lifting the core barrel: lifting Q floors of the core tube (3), wherein the number of the floors of the core tube (3) is N +1+ Q floors, and the distance between the top of the creeping formwork (4) and the tower crane elevation position of the first floor type tower crane (1) is b2In the unit of m, wherein Q is a positive integer and
c is the height of a single floor, the unit is m, rho is a proportionality coefficient and is 0<ρ<1；
Step five, constructing a steel structure outer frame and attaching a second tower crane of a second floor type tower crane to a wall: constructing the steel structure outer frame (5) to enable the steel structure outer frame (5) to lift floors of Q layers, wherein the number of the layers of the steel structure outer frame (5) is N + Q layers;
performing second tower crane wall attachment (7) attachment on a second floor type tower crane (2), wherein the second tower crane wall attachment (7) is attached to the (N + Q) th layer structure of the steel structure outer frame (5);
step six, jacking a second floor type tower crane: jacking the second floor type tower crane (1) to ensure that the distance between the top of the creeping formwork (4) and the tower crane elevation position of the second floor type tower crane (2) is a2In the unit of m, wherein a2＝b1；
Seventhly, lifting the core barrel again: the Q floors are lifted again for the core tube (3), at the moment, the number of the layers of the core tube (3) is N +1+2Q layers, and the distance between the top of the creeping formwork (4) and the tower crane elevation position of the second floor type tower crane (2) is a1；
Step eight, re-constructing the steel structure outer frame: the steel structure outer frame (5) is constructed again, so that the steel structure outer frame (5) can lift the floors of Q layers again, and at the moment, the number of the layers of the steel structure outer frame (5) is N +2Q layers;
step nine, regarding the (N + 2) th layer structure of the steel structure outer frame (5) as the Nth layer structure of the steel structure outer frame (5);
step ten, circulating the step two to the step nine.
2. The staggered construction method of the external landing type tower crane of the super high-rise building structure according to claim 1, characterized in that: the floor type tower crane is a flat arm type floor type tower crane.
3. The staggered construction method of the external landing type tower crane of the super high-rise building structure according to claim 1, characterized in that: the creeping formwork (4) is a hydraulic self-creeping formwork.
4. The staggered construction method of the external landing type tower crane of the super high-rise building structure according to claim 1, characterized in that: q is 2 or 3, and P is 4-6.
5. The staggered construction method of the external landing type tower crane of the super high-rise building structure according to claim 1, characterized in that: and the proportionality coefficient rho is 0.4-0.6.
6. The staggered construction method of the external landing type tower crane of the super high-rise building structure according to claim 1, characterized in that: and fifthly, when the steel structure outer frame (5) is constructed in the eighth step, the construction of the steel structure outer frame (5) is completed in a matched manner by adopting a mode of division and cooperation of the first floor type tower crane (1) and the second floor type tower crane (2).
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| CN113387281B (en) * | 2021-06-25 | 2022-11-08 | 中建一局集团建设发展有限公司 | Construction method of alternate conversion attachment system of externally attached tower crane |
| CN113445741B (en) * | 2021-07-08 | 2023-02-28 | 江苏沪宁钢机股份有限公司 | Half-floor tower suspended ceiling construction method |
| CN113700306A (en) * | 2021-08-27 | 2021-11-26 | 北京天邦巨成科技有限公司 | Hydraulic lifting method for steel structure building |
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