CN115217216A - Construction method of tower crown structure of super high-rise building - Google Patents

Construction method of tower crown structure of super high-rise building Download PDF

Info

Publication number
CN115217216A
CN115217216A CN202210992092.0A CN202210992092A CN115217216A CN 115217216 A CN115217216 A CN 115217216A CN 202210992092 A CN202210992092 A CN 202210992092A CN 115217216 A CN115217216 A CN 115217216A
Authority
CN
China
Prior art keywords
hoisting
rise building
super high
units
truss
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210992092.0A
Other languages
Chinese (zh)
Inventor
刘兴
李孝宇
贾志远
王永刚
苏铠
黄云
李丽梅
颜友成
颜志伟
王洋洋
曾金龙
冯锦曦
黄媛
常雪敏
周程东
秦斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Construction Second Engineering Bureau Co Ltd
China Construction Second Engineering Bureau Yangguang Intelligent Manufacturing Co Ltd
Original Assignee
China Construction Second Engineering Bureau Co Ltd
China Construction Second Engineering Bureau Yangguang Intelligent Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Construction Second Engineering Bureau Co Ltd, China Construction Second Engineering Bureau Yangguang Intelligent Manufacturing Co Ltd filed Critical China Construction Second Engineering Bureau Co Ltd
Priority to CN202210992092.0A priority Critical patent/CN115217216A/en
Publication of CN115217216A publication Critical patent/CN115217216A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • 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
    • 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
    • E04B2001/0053—Buildings characterised by their shape or layout grid
    • E04B2001/0061—Buildings with substantially curved horizontal cross-section, e.g. circular
    • 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
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E04B2001/1936—Winged profiles, e.g. with a L-, T-, U- or X-shaped cross section

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention discloses a construction method of a tower crown structure of a super high-rise building, which comprises the following steps: pre-assembling hoisting units on the ground according to the crown structure, wherein the hoisting units comprise two hoisting units, a single hoisting unit and a triangular hoisting unit; installing two hoisting units at the middle part of the south side of the super high-rise building by using one of the tower cranes; before hoisting, welding profile steel supports at the lower parts of the two hoisting units and binding cable ropes; after the hoisting is in place, connecting the two hoisting units by using a pin shaft; and the two hoisted units are connected with the tower crane, and the other tower crane is used for hoisting the connecting rod pieces between the two hoisted units and the core barrel of the super high-rise building. The construction method of the tower crown structure of the super high-rise building, provided by the invention, has reasonable steps, and the hoisting unit is assembled in advance on the ground, so that the high-altitude welding amount is effectively reduced; and the double lifting cranes are matched with the in-situ hoisting, so that the construction safety is ensured, the construction period is shortened, and the construction cost is reduced.

Description

Construction method of tower crown structure of super high-rise building
Technical Field
The invention belongs to the technical field of building engineering, and relates to a construction method of a tower crown structure of a super high-rise building.
Background
With the rapid development of high-rise buildings and super high-rise buildings, the height of newly built super high-rise buildings in large cities in China generally reaches more than 200m, the top of each high-rise building directly influences the design effect of the whole high-rise building, particularly for the super high-rise buildings with the height of more than 200m, the good top design plays a role in drawing dragon eyes on the whole image of the building and can stand out in a building group of high-rise buildings. At present, super high-rise building top structure adopts the steel construction room lid molding mostly, and the courage adopts the structural style that the technique is complicated such as encorbelment, hang, slope, meanwhile, unique molding design has brought a series of challenges that have the degree of difficulty for steel construction room lid structure's construction.
Similar projects of the super high-rise tower crown structure in China include projects such as the Shanghai front beach center, construction of the tower crown steel structure adopts a construction method of 'scaffold cooperation, vertical fish-bellied truss ground segmentation and high-altitude in-situ hoisting', construction safety is reliable, but the high-altitude welding amount of construction is increased, scaffold cost is high, and project construction cost is increased.
Therefore, it is necessary to design a construction method of a tower crown structure of a super high-rise building to solve the technical problems in the prior art.
Disclosure of Invention
The invention aims to solve at least part of technical problems in the prior art to a certain extent, and provides a construction method of a tower crown structure of a super high-rise building, which has reasonable steps, wherein hoisting units are assembled on the ground in advance, so that the high-altitude welding amount is effectively reduced; and the double lifting cranes are matched with the in-situ hoisting, so that the construction safety is ensured, the construction period is shortened, and the construction cost is reduced.
In order to solve the technical problem, the invention provides a construction method of a tower crown structure of a super high-rise building, which comprises the following steps:
s1, pre-assembling hoisting units on the ground according to a tower crown structure, wherein the hoisting units comprise two hoisting units, a single hoisting unit and a triangular hoisting unit;
s2, installing two hoisting units at the middle part of the south side of the super high-rise building by using one tower crane; before hoisting, welding profile steel supports at the lower parts of the two hoisting units and binding cable ropes; after the hoisting is in place, connecting the two hoisting units by using a pin shaft; the two hoisted hoisting units are connected with a tower crane, and a connecting rod piece between the two hoisting units and a core tube of the super high-rise building is hoisted by using another tower crane;
s3, installing two adjacent hoisting units according to the step S2, and installing connecting rods between the two adjacent hoisting units;
s4, installing double-truss hoisting units at the south side and the north side of the super high-rise building according to the steps S2 to S3;
s5, installing two hoisting units at the northwest side of the super high-rise building according to the steps S2 to S3;
s6, hoisting the triangular hoisting unit at the lowest part of the northwest corner of the super high-rise building by using a tower crane, performing spot welding and fixing after hoisting in place, and temporarily fixing the triangular hoisting unit between two hoisting units at two sides by using a chain block; hoisting and fixing an inclined strut rod piece below the triangular hoisting unit by using a tower crane;
s7, sequentially hoisting triangular hoisting units at northwest corners of the super high-rise building from bottom to top according to the step S6;
s8, installing double-truss hoisting units at the northeast side of the super high-rise building according to the steps S2 to S3;
s9, installing a single-truss hoisting unit on one side of the northeast corner of the super high-rise building by using a tower crane, wherein the hook of the hoisted tower crane is not loosened so as to install a connecting rod piece between the single-truss hoisting unit and a core barrel of the super high-rise building;
s10, sequentially hoisting triangular hoisting units of northeast corners of the super high-rise building from bottom to top according to the step S6;
s11, detaching a tower crane on the west side of the super high-rise building, and installing single-truss hoisting units to the west side of the super high-rise building by using another tower crane, wherein the single-truss hoisting units are installed from the middle part to the corners of the super high-rise building;
s12, sequentially hoisting triangular hoisting units of southwest corners of the super high-rise building from bottom to top according to the step S6;
s13, dismantling a tower crane on the east side of the super high-rise building, and installing single-truss hoisting units on the east side of the super high-rise building by using roof cranes, wherein the single-truss hoisting units are installed from the middle part to the corner part of the super high-rise building;
and S14, sequentially hoisting the triangular hoisting units at the southwest corner of the super high-rise building from bottom to top by using the roof crane according to the step S6.
Preferably, in step S1, the assembling of the two-pin hoisting unit using the supporting jig includes:
s110, hoisting the middle sections of the single fish-belly type trusses to the upper sides of the first supporting bed frames which are sequentially arranged;
s120, hoisting the end heads of the single fish-belly trusses to the two ends of the middle section of the single fish-belly truss to form the single fish-belly truss;
s130, mounting the ring truss on the finished single fish-belly type truss;
s140, in step S130, a single fish-belly type truss is mounted on the upper side of the ring truss via the second support jig.
Preferably, in step S1, a fireproof paint is sprayed on the non-welding position of the pre-assembled hoisting unit.
In some embodiments, after the hoisting of the tower crown structure is completed, fireproof paint is sprayed on the welding position of the hoisting unit.
In some embodiments, the hoisting units are sequentially installed along the middle of the side of the super high-rise building toward the corners.
In some embodiments, the two hoisting units are hoisted according to a bilaterally symmetrical operation sequence by taking the middle position of the side surface of the super high-rise building as a reference.
In some embodiments, the first support jig comprises a first main frame and first inclined struts, the first main frame is a first rectangular frame formed by welding I-beams, the number of the first inclined struts is a pair, and the first inclined struts are installed on two sides of the first rectangular frame in a staggered manner.
In some embodiments, the second support jig comprises a second main frame, a second inclined strut and a limiting frame, the second main frame is a second rectangular frame formed by welding I-shaped steel, and a pair of second inclined struts are installed on two sides of the second rectangular frame in a staggered mode; the limiting frame is vertically arranged on the upper side of the second rectangular frame.
In some embodiments, the limiting frame is an L-shaped structure and is formed by welding I-shaped steel.
In some embodiments, the triangular hoisting unit is a sheet structure formed by assembling a plurality of pipe fittings, wherein the outer diameter of the pipe fitting outside the sheet structure is larger than that of the pipe fitting inside the sheet structure.
The invention has the beneficial effects that:
the construction method of the tower crown structure of the super high-rise building provided by the invention has reasonable steps, and the hoisting unit is assembled on the ground in advance, so that the high-altitude welding amount is effectively reduced; and the double lifting cranes are matched with the in-situ hoisting, so that the construction safety is ensured, the construction period is shortened, and the construction cost is reduced.
Drawings
The above advantages of the present invention will become more apparent and more readily appreciated from the detailed description set forth below when taken in conjunction with the drawings, which are intended to be illustrative, not limiting, of the invention and in which:
fig. 1 is a flow chart of a construction method of a tower crown structure of a super high-rise building according to the present invention;
FIG. 2 is a schematic structural diagram of a double-pin hoisting unit according to the present invention;
FIG. 3 is a schematic structural view of a single-pin hoisting unit according to the present invention;
FIG. 4 is a schematic view of the triangular hoisting unit according to the invention;
fig. 5 is an exploded view of the components of the fish-belly truss of the invention;
FIG. 6 is a three-dimensional view of double hoisting units hoisted at the middle position of the south side of the super high-rise building;
fig. 7 is a top view of the connection rod member installed between the two hoisting units and the core barrel in fig. 6;
fig. 8 is a three-dimensional view of the corresponding two-truss hoisting units and connecting rods in fig. 7 fixed to the south side of the super high-rise building;
FIG. 9 is a three-dimensional view of two double-roof hoisting units installed at the south side of the super high-rise building;
fig. 10 is a schematic view of installation of a link member between two adjacent hoisting units in fig. 9;
fig. 11 is a three-dimensional view of two-truss hoisting units installed at the south side and the north side of the super high-rise building;
fig. 12 is a three-dimensional view of two hoisting units installed at the northwest side of a super high-rise building;
FIG. 13a is a three-dimensional view of the super high-rise building after the triangular hoisting unit is installed at the bottom of the northwest corner;
FIG. 13b is a schematic view of the installation of diagonal bracing members at the bottom most northwest corner of a super high-rise building;
FIG. 13c is a three-dimensional view of the super high-rise building after the triangular hoisting unit is installed in the northwest corner;
fig. 14 is a three-dimensional view of the super high-rise building after the hoisting unit is installed at the northeast corner of the northeast side;
FIG. 15 is a three-dimensional view of a first single-truss hoisting unit installed after a tower crane on the west side of the super high-rise building is removed;
fig. 16 is a three-dimensional view of a single-truss lifting unit at the west side of a super high-rise building connected to a core tube by a connection rod;
FIG. 17 is a three-dimensional view of the super high-rise building after the triangular hoisting unit is installed at the southwest corner;
FIG. 18 is a three-dimensional view of the super high-rise building after the installation of the tower crown structure;
fig. 19 is a flowchart for assembling a double-truss hoisting unit using a support jig;
FIG. 20 is a front view of a first support jig of the invention;
FIG. 21 is a three-dimensional view of the first support jig of FIG. 20;
FIG. 22 is a front view of a second support jig of the invention;
fig. 23 is a three-dimensional view of the second support jig of fig. 22.
Detailed Description
Fig. 1 to 23 are schematic diagrams related to a construction method of a crown structure of a super high-rise building according to the present application, and the present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The drawings accompanying this specification are for the purpose of illustrating the concepts of the invention and are not necessarily to scale, the drawings being schematic representations of the shapes of the parts and their interrelationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the invention. Like reference numerals are used to denote like parts.
The invention relates to a flow chart of a construction method of a tower crown structure of a super high-rise building, which is shown in figure 1. The construction method of the tower crown structure of the super high-rise building comprises the following steps:
s1, pre-assembling hoisting units on the ground according to a crown structure, wherein the hoisting units comprise two hoisting units 10, one hoisting unit 20 and a triangular hoisting unit 30;
fig. 2 is a schematic view of a two-beam hoisting unit 10, fig. 3 is a schematic view of a single-beam hoisting unit 20, and fig. 4 is a schematic view of a triangular hoisting unit 30. The two-truss hoisting units 10 and the single-truss hoisting unit 20 are based on a single-truss fish-belly type truss 80 shown in fig. 5. Because the fish-belly type truss 80 has a large size and a large weight, a single fish-belly type truss 80 needs to be split into a single fish-belly type truss middle section and a single fish-belly type truss end for convenient installation and transportation; the triangle hoisting unit 30 is divided into an upper triangle hoisting part and a lower triangle hoisting part.
In fig. 4, the triangular hoisting unit 30 is a sheet structure formed by assembling a plurality of pipe fittings, wherein the outer diameter of the pipe fitting outside the sheet structure is larger than that of the pipe fitting inside the sheet structure, so as to ensure the overall strength of the triangular hoisting unit 30.
S2, installing two hoisting units 10 at the middle part of the south side of the super high-rise building by using one tower crane; before hoisting, welding profile steel supports at the lower parts of the two hoisting units 10 and binding cable ropes; after the hoisting is in place, connecting the two hoisting units 10 by using a pin shaft; the two hoisted hoisting units 10 are connected with a tower crane, and a connecting rod member 40 between the two hoisted hoisting units 10 and a core tube of a super high-rise building is hoisted by using another tower crane;
fig. 6 is a plan view of one double-story hoisting unit 10 installed at a central position on the south side of the super high-rise building, and a schematic view of a connection dry frame 40 installed between the double-story hoisting unit 10 and the core tube of the super high-rise building, and fig. 8 is a three-dimensional view of the first double-story hoisting unit 10 fixed as shown in fig. 7.
S3, installing the two adjacent hoisting units 10 according to the step S2, and installing the connecting rods 50 between the two adjacent hoisting units 10 as shown in FIG. 10 as described in FIG. 9;
s4, installing double-truss hoisting units 10 at the south side and the north side of the super high-rise building according to the steps S2 to S3, as shown in the figure 11;
s5, installing two hoisting units 10 at the northwest side of the super high-rise building according to the steps S2 to S3, as shown in FIG. 12;
s6, hoisting the triangular hoisting unit 30 at the lowest part of the northwest corner of the super high-rise building by using a tower crane, as shown in FIG. 13a, performing spot welding and fixing after hoisting in place, and temporarily fixing the triangular hoisting unit between the two hoisting units 10 at two sides by using a chain block; hoisting and fixing the diagonal brace member 90 below the triangular hoisting unit 30 by using a tower crane, as shown in fig. 13 b;
s7, sequentially hoisting the triangular hoisting units 30 at the northwest corner of the super high-rise building from bottom to top according to the step S6; the effect diagram after installation is shown in fig. 13 c.
S8, installing two hoisting units 10 at the northeast side of the super high-rise building according to the steps S2 to S3;
s9, installing a single-truss hoisting unit 20 at one side of the northeast corner of the super high-rise building by using a tower crane, wherein the hook of the hoisted tower crane is not loosened so as to install a connecting rod member 40 between the single-truss hoisting unit 20 and a core tube of the super high-rise building;
s10, sequentially hoisting the triangular hoisting units 30 of the northeast corner of the super high-rise building from bottom to top according to the step S6; the effect diagram after installation is shown in fig. 14.
S11, dismantling a tower crane on the west side of the super high-rise building, installing single-truss hoisting units 20 to the west side of the super high-rise building by using another tower crane, and installing single-truss hoisting units 10 from the middle to the corners of the super high-rise building; fig. 15 is a schematic diagram illustrating a single-frame hoisting unit 20 installed at a west-side middle position after a tower crane on a west side of the super high-rise building is removed, and fig. 16 is a schematic diagram illustrating the single-frame hoisting unit 20 on the west side of the super high-rise building connected to the core tube by the connection rod 40.
After the tower crane on the west side of the super high-rise building is removed, the two tower cranes cannot be matched with each other because only one tower crane remains, and in order to ensure the construction safety, the hoisting unit installed on the side of the super high-rise building again is a single-truss hoisting unit 20.
S12, hoisting the triangular hoisting units 30 of the southwest corner of the super high-rise building from bottom to top in sequence according to the step S6, as shown in FIG. 17;
s13, dismantling a tower crane on the east side of the super high-rise building, and installing single-truss hoisting units 20 on the east side of the super high-rise building by using a roof crane, wherein the single-truss hoisting units 20 are installed from the middle part to the corners of the super high-rise building;
and S14, sequentially hoisting the triangular hoisting units at the southwest corner of the super high-rise building from bottom to top by using the roof crane according to the step S6. FIG. 18 is a three-dimensional view of the completed tower crown structure after installation.
As an embodiment of the present invention, in step S1, a flow chart of construction steps of assembling a two-truss hoisting unit 10 using a support jig is shown in fig. 19, and the steps include:
s110, hoisting the middle sections 80a of the single fish-belly type trusses shown in fig. 5 to the upper side of the first support jig 60 arranged in sequence;
fig. 20 and 21 show schematic views of the first support jig 60. The first support jig 60 includes a first main frame 61 and first inclined struts 62, the first main frame 61 is a first rectangular frame formed by welding i-beams, the number of the first inclined struts 62 is a pair, and the first inclined struts 62 are installed on two sides of the first rectangular frame in a staggered manner, as shown in fig. 21.
S120, hoisting the single fish-belly truss end 80b to two ends of the single fish-belly truss middle section 80a to form the single fish-belly truss 80 shown in fig. 8; the left side of fig. 8 is a schematic view of a single fish-belly truss 80, and the right side of fig. 8 is an exploded view of the single fish-belly truss 80.
S130, mounting the ring truss on the finished single fish-belly truss 80;
in step S140, a single fish-belly truss 80 is mounted on the upper side of the ring truss via the second support jig 70 in addition to step S130.
The second support jig 70 comprises a second main frame 71, a second inclined strut 72 and a limiting frame 73, the second main frame 71 is a second rectangular frame formed by welding h-shaped steel, and the pair of second inclined struts 72 are installed on two sides of the second rectangular frame in a staggered manner, as shown in fig. 23; the second inclined struts 72 are respectively disposed at end portions of the side surfaces of the second rectangular frame.
The limiting frame 73 is vertically arranged on the upper side of the second rectangular frame, as shown in fig. 22. The limiting frame 73 is an L-shaped structure and is formed by welding h-shaped steel. In the assembly type of the two hoisting units 10, a fish-belly type truss 80 can be assembled on the first supporting jig 60 which is arranged in sequence at present, and a ring truss on the fish-belly type truss is welded; the assembled fish-belly truss 80 is placed above the limiting frame 73 and welded with the ring truss to form a double-truss hoisting unit 10 to be hoisted.
In the invention, the safety of construction is ensured in order to reduce the overhead working amount. In the step S1, spraying fireproof paint at a non-welding position of a pre-installed hoisting unit; and after the hoisting of the crown structure is finished, spraying fireproof paint at the welding position of the hoisting unit. Most of the work of spraying the fireproof coating is finished on the ground, so that the workload of overhead operation is effectively reduced, and the construction safety is improved.
In the invention, the hoisting units are sequentially installed towards the corner part along the middle position of the side surface of the super high-rise building.
Further, the two-truss hoisting unit 10 is hoisted in a bilaterally symmetrical operation sequence with the middle position of the side surface of the super high-rise building as a reference. In other words, the first two-beam hoisting unit 10 is installed at the middle position of the side surface of the super high-rise building, the next two-beam hoisting unit 10 is installed on the right side of the two-beam hoisting unit 10, and the next two-beam hoisting unit 10 is installed on the left side of the two-beam hoisting unit 10.
In the invention, the core idea of the construction of the tower crown structure is ground assembly and double-machine cooperation, and the two hoisting units 10 (first hoisting unit) for the first hoisting use another tower crane to hoist the connecting rod member 40 of the core cylinder under the condition that the tower crane is not loosened. In order to increase the hoisting stability of the head unit and prevent the influence of gust, a temporary supporting measure is arranged below the head unit, and the head unit is hoisted together with the truss and then welded and fixed on the ground. This measure may enhance the stability of the head unit.
Before hoisting, computer software is used to simulate the hoisting steps. The checking conditions are as follows: the self weight of the structure is automatically calculated and considered by software. The checking calculation of the structure safety and the stability adopts 50-year wind load and the basic wind pressure is 0.9kN/m 2 The structural deformation displacement adopts the load of meeting wind once in 10 years, and the basic wind pressure is 0.45kN/m 2 And landform type C. And the wind load is obtained by calculation according to the actual elevation of the structure and the gradient wind profile.
Under the load combination, the two hoisting units are stable in position and then displace 1.5mm at most. And the double-roof hoisting unit is stable in checking calculation.
When the triangular hoisting units 30 corresponding to the four corner areas of the super high-rise building are hoisted, the four corner ring trusses are integrally hoisted, and the stability of the four corner ring trusses is checked and calculated before and after the lower inclined rods are hoisted. The checking conditions are as follows: the self weight of the structure is automatically calculated and considered by software. The checking calculation of the structure safety and the stability adopts 50-year wind load and the basic wind pressure is 0.9kN/m 2 The structural deformation displacement adopts the load of meeting wind once in 10 years, and the basic wind pressure is 0.45kN/m 2 And landform type C. And calculating the wind load according to the actual elevation of the structure and the gradient wind profile.
Under the load combination, the triangular hoisting unit 30 is stable in position and then moves by 11mm at most. The hoisting unit is stable in checking calculation.
Compared with the defects and shortcomings of the prior art, the construction method of the tower crown structure of the super high-rise building, provided by the invention, has the advantages that the steps are reasonable, and the following steps are realized:
a. the invention has the advantages of low installation cost and high construction efficiency, does not need a large amount of measures during installation, and only needs to be assembled in place on the ground, the field installation mainly adopts the construction process of 'ground assembly + in-situ hoisting + spare part embedding', the ground assembly mainly comprises a single fish-belly type truss hoisting unit and a double-truss hoisting unit consisting of two fish-belly type trusses, the field hoisting times are reduced, and the high-altitude welding amount is greatly reduced; in addition, after the on-site splicing is completed, the fireproof coating is sprayed in time, the fireproof coating is sprayed after the position of the welding seam is avoided on the ground, and then the lifting is carried out, so that the construction danger caused by the spraying of the high-altitude fireproof coating can be avoided, and the high-altitude spraying of the fireproof coating can be prevented from polluting the high altitude. Effectively promotes the construction safety, shortens the construction period and reduces the cost.
b. The truss structure is hoisted according to the construction method, most of the truss structure is assembled on the ground, the ground welding conditions are greatly superior to those of high-altitude butt welding, and the structure forming effect is good. In addition, before the truss structure is installed, finite element software preassembly simulation analysis is carried out on the structure construction, calculation is carried out according to the process of the method, deformation displacement values of the truss structure are all smaller than the standard requirement, and the method can well guarantee the design posture.
c. The tower crane is low in assembling speed and efficiency, a single fish-bellied truss hoisting unit and a double-fished hoisting unit consisting of two fish-bellied trusses are assembled in a concentrated mode only by using a plurality of small truck cranes, convenience and rapidness are achieved, dependence on the tower crane is effectively reduced, the tower crane is given other specialties needing large-range material transfer, and project construction efficiency is improved.
The present invention is not limited to the above embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which are the same as or similar to the technical solutions of the present invention, fall within the protection scope of the present invention.

Claims (10)

1. A construction method of a tower crown structure of a super high-rise building is characterized by comprising the following steps:
s1, pre-assembling hoisting units on the ground according to a tower crown structure, wherein the hoisting units comprise two hoisting units, a single hoisting unit and a triangular hoisting unit;
s2, installing two hoisting units at the middle part of the south side of the super high-rise building by using one tower crane; before hoisting, welding profile steel supports at the lower parts of the two hoisting units and binding cable ropes; after the hoisting is in place, connecting the two hoisting units by using a pin shaft; the two hoisted hoisting units are connected with a tower crane, and a connecting rod piece between the two hoisting units and a core tube of the super high-rise building is hoisted by using another tower crane;
s3, installing two adjacent hoisting units according to the step S2, and installing connecting rods between the two adjacent hoisting units;
s4, installing double-truss hoisting units at the south side and the north side of the super high-rise building according to the steps S2 to S3;
s5, installing two hoisting units at the northwest side of the super high-rise building according to the steps S2 to S3;
s6, hoisting the triangular hoisting unit at the lowest part of the northwest corner of the super high-rise building by using a tower crane, performing spot welding and fixing after hoisting in place, and temporarily fixing the triangular hoisting unit between two hoisting units at two sides by using a chain block; hoisting and fixing an inclined strut rod piece below the triangular hoisting unit by using a tower crane;
s7, sequentially hoisting triangular hoisting units at northwest corners of the super high-rise building from bottom to top according to the step S6;
s8, installing two hoisting units at the northeast side of the super high-rise building according to the steps S2 to S3;
s9, installing a single-truss hoisting unit on one side of the northeast corner of the super high-rise building by using a tower crane, wherein the hook of the hoisted tower crane is not loosened so as to install a connecting rod piece between the single-truss hoisting unit and a core barrel of the super high-rise building;
s10, sequentially hoisting triangular hoisting units of northeast corners of the super high-rise building from bottom to top according to the step S6;
s11, dismantling a tower crane on the west side of the super high-rise building, and installing single-truss hoisting units to the west side of the super high-rise building by using another tower crane, wherein the single-truss hoisting units are installed from the middle part to the corner part of the super high-rise building;
s12, sequentially hoisting triangular hoisting units of southwest corners of the super high-rise building from bottom to top according to the step S6;
s13, dismantling a tower crane on the east side of the super high-rise building, and installing single-truss hoisting units on the east side of the super high-rise building by using roof cranes, wherein the single-truss hoisting units are installed from the middle part to the corner part of the super high-rise building;
and S14, sequentially hoisting the triangular hoisting units at the southwest corner of the super high-rise building from bottom to top by using the roof crane according to the step S6.
2. The method of constructing a crown structure of a super high-rise building according to claim 1, wherein the step S1 of assembling the two hoisting units using the supporting jig comprises the steps of:
s110, hoisting the middle sections of the single fish-belly type trusses to the upper sides of the first supporting bed frames which are sequentially arranged;
s120, hoisting the end of the single fish-belly truss to two ends of the middle section of the single fish-belly truss to form the single fish-belly truss;
s130, mounting the ring truss on the finished single fish-belly type truss;
and S140, in step S130, mounting the single fish-belly type truss on the upper side of the ring truss through the second supporting jig.
3. The method of constructing a tower crown structure of a super high-rise building according to claim 1, wherein in step S1, a fire retardant coating is sprayed on the non-welded position where the pre-assembled hoisting unit is completed.
4. The method for constructing a tower crown structure of a super high-rise building according to claim 1, wherein after the hoisting of the tower crown structure is completed, a fireproof paint is sprayed on the welding position of the hoisting unit.
5. The method of constructing a crown structure of a super high-rise building according to claim 1, wherein the hoisting units are sequentially installed toward corners along a middle position of a side of the super high-rise building.
6. The method of constructing a crown structure of a super high-rise building according to claim 1, wherein the two hoisting units are hoisted in a bilaterally symmetrical operation order with reference to a middle position of a side surface of the super high-rise building.
7. The method for constructing the tower crown structure of the super high-rise building according to claim 2, wherein the first support jig comprises a first main frame and a pair of first inclined struts, the first main frame is a first rectangular frame formed by welding I-shaped steel, and the first inclined struts are installed on two sides of the first rectangular frame in a staggered manner.
8. The construction method of the crown structure of the super high-rise building according to claim 2, wherein the second supporting jig comprises a second main frame, a second diagonal brace and a limiting frame, the second main frame is a second rectangular frame formed by welding I-shaped steel, and a pair of the second diagonal braces are installed on two sides of the second rectangular frame in a staggered manner; the limiting frame is vertically arranged on the upper side of the second rectangular frame.
9. The method for constructing the tower crown structure of a super high-rise building according to claim 8, wherein the limiting frame is an L-shaped structure and is formed by welding I-shaped steel.
10. The method for constructing the tower crown structure of the super high-rise building according to claim 1, wherein the triangular hoisting unit is a sheet structure formed by assembling a plurality of pipe fittings, wherein the outer diameter of the pipe fitting outside the sheet structure is larger than that of the pipe fitting inside the sheet structure.
CN202210992092.0A 2022-08-18 2022-08-18 Construction method of tower crown structure of super high-rise building Pending CN115217216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210992092.0A CN115217216A (en) 2022-08-18 2022-08-18 Construction method of tower crown structure of super high-rise building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210992092.0A CN115217216A (en) 2022-08-18 2022-08-18 Construction method of tower crown structure of super high-rise building

Publications (1)

Publication Number Publication Date
CN115217216A true CN115217216A (en) 2022-10-21

Family

ID=83615574

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210992092.0A Pending CN115217216A (en) 2022-08-18 2022-08-18 Construction method of tower crown structure of super high-rise building

Country Status (1)

Country Link
CN (1) CN115217216A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1082749A1 (en) * 1982-01-21 1984-03-30 Центральное Конструкторское Бюро "Строймаш" Научно-Производственного Объединения "Ленстроймаш" Tower crane
JP2015055062A (en) * 2013-09-10 2015-03-23 株式会社川瀬工務店 Lift type work scaffold device of tower crane

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1082749A1 (en) * 1982-01-21 1984-03-30 Центральное Конструкторское Бюро "Строймаш" Научно-Производственного Объединения "Ленстроймаш" Tower crane
JP2015055062A (en) * 2013-09-10 2015-03-23 株式会社川瀬工務店 Lift type work scaffold device of tower crane

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李博;翟海涛;张国东;倪陈;刘蕾;: "中国国际贸易中心三期工程主塔楼主要施工技术", 工程质量, vol. 28, no. 05, 10 May 2010 (2010-05-10), pages 45 - 60 *

Similar Documents

Publication Publication Date Title
CN208430687U (en) Self-anchored type suspended-cable structure support construction and system
CN112695952B (en) Building roof truss support structure and construction method
CN107152078B (en) Hinge device and construction method for releasing welding internal stress of steel gallery by using hinge device
CN108532968A (en) A kind of assembled support device of steel bar truss floor support plate composite floor system
CN114525877B (en) Stadium combined roof based on large cantilever inclined triangular truss and construction method
CN111395533A (en) Multi-mechanism resultant force air overturning construction method for large-span arc-shaped latticed shell structure
CN111779274A (en) Construction method for integrally lifting temporary hoisting point of large-span unequal-height steel structure net rack
CN102003078A (en) Assembling method of net rack
CN106759909A (en) Bearing structure system and its construction method are hung up under one kind
CN117569609A (en) Integral hoisting construction method for large-span beam string
CN113833107A (en) Conversion truss and welding method of truss nodes thereof
CN105480002A (en) Single-layer steel structure decoration tree and mounting method thereof
CN114837483B (en) High-low span portal steel frame building structure and construction process thereof
CN114941433B (en) Construction method of high-weight ship type daylighting roof steel structure
CN113756504B (en) Construction method of right-angle aluminum alloy latticed shell with external corners
CN115217216A (en) Construction method of tower crown structure of super high-rise building
CN113123609B (en) Method for mounting steel structure dome net rack with two low ends and high middle
CN216190654U (en) Line-straight-down type station room finite space large-span steel structure lifting tool
CN205444935U (en) Special -shaped steel space frame construction and installation structure of complicated large -span department
CN113833279A (en) Integral jacking construction method for deformed steel net rack with height difference during mounting of support
CN114482561A (en) Steel structure roof installation method
CN113833277A (en) Construction method for decomposing primary and secondary beams of steel latticed shell
CN108797350B (en) Tower column inner and outer stiff skeleton device and construction method thereof
CN205292077U (en) Tree is decorated to individual layer steel construction
CN115110640B (en) Method for installing circular ring steel truss of experimental building

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination