Construction method of a core tube building machine system based on the staggered arrangement of arc beams and straight beams

Abstract

The present invention discloses a construction method for a core tube building machine system with staggered arrangement of arc beams and straight beams. The core tube includes two elliptical tube monomers connected by arc beams and / or straight beams. An elevator shaft is arranged inside the elliptical tube monomer, and an internal building machine component is installed in the elevator shaft. An external building machine component is arranged circumferentially outside the core tube. The construction method includes foundation construction; installing the internal building machine component after the construction of the second-layer vertical structural wall of the core tube is completed; installing the external building machine component after the construction of the third-layer vertical structural wall of the core tube is completed; the internal building machine component and the external building machine component perform climbing operations; the top floor and the second top floor are constructed; the internal building machine component and the external building machine component are removed. This method can perform sequential construction for different structures of the core tube, save the number of tower crane hoists, meet the needs of material stacking and allocation, and take into account the operation safety and provide an escape condition.

Description

Technical Field

[0001] The present invention relates to the technical field of the construction of a core tube building machine, and particularly relates to a construction method for a core tube building machine system based on the staggered arrangement of arc beams and straight beams. Background Art

[0002] Due to good structural stress and excellent seismic resistance, the core tube is the mainstream structural form widely adopted in super high-rise buildings internationally. When constructing the core tube, a building machine system is usually used for operation. In traditional core tubes, a large number of vertical transportation facilities (such as elevator shafts) and equipment pipelines are often concentrated. During the construction process, the vertical transportation of personnel, materials, and equipment depends on these limited channels. As the building height increases, the distance and difficulty of vertical transportation increase continuously, and problems such as low transportation efficiency and long waiting times may occur, affecting the overall construction progress. Moreover, when the shape and size of the outer facade of the core tube structure change, it is usually necessary to erect a scaffold for auxiliary operation, which affects the construction efficiency. During construction, the removed formwork needs to be hoisted to the ground, cleaned, and then hoisted to the next construction layer, repeatedly increasing the hoisting times of the tower crane and resulting in a high construction cost. Summary of the Invention

[0003] The purpose of the present invention is to provide a construction method for a core tube building machine system based on the staggered arrangement of arc beams and straight beams. This method can perform sequential construction for different structures of the core tube, save the hoisting times of the tower crane, meet the needs of material stacking and allocation, take into account the operation safety, provide an escape condition, and reduce the construction cost.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A construction method for a core tube building machine system based on the staggered arrangement of arc beams and straight beams. The core tube includes two elliptical tube monomers arranged on a structural foundation and arc beams and / or straight beams connecting the ends of the two elliptical tube monomers. A plurality of elevator shafts are arranged inside the elliptical tube monomers, and inner building machine components are installed in the elevator shafts. Ten outer building machine components are arranged circumferentially outside the core tube, numbered W1 to W10 in sequence, and two of the outer building machine components numbered W5 and W10 are located outside the arc beam or straight beam. Sixteen elevator shafts are provided, and thirteen of the inner building machine components are arranged in the sixteen elevator shafts, numbered N11 to N23 in sequence;

[0006] The construction method includes the following steps:

[0007] Step 1, foundation construction. First, construct the pile raft foundation, and then construct the first and second floors of the core tube on the pile raft foundation;

[0008] Step 2: Installation of the in - building machine assembly. After the construction of the vertical structural wall on the second floor of the core tube is completed, install the in - building machine assemblies numbered N11 - N12, N14 - N19, and N21 - N23. The in - building machine assembly includes an inner wall - attached support installed in the elevator shaft, an inner hydraulic climbing member installed on the inner wall - attached support, an inner lower frame installed on the inner hydraulic climbing member, an inner hanging bracket installed at the bottom of the inner lower frame, and an inner upper frame installed at the top of the inner lower frame. The in - building machine assembly is divided into an inner upper operation area, an inner middle operation area, an inner lower operation area, and an inner bottom operation area from top to bottom. Rebar tying operations are carried out in the inner upper operation area, formwork support, formwork closing, formwork removal, and formwork cleaning operations are carried out in the inner middle operation area, climbing operations are carried out in the inner lower operation area, and disassembly, cleaning, and maintenance operations are carried out in the inner bottom operation area. When the in - building machine assembly climbs, it drives the four - side formwork in the corresponding elevator shaft to climb.

[0009] Step 3: Installation of the out - building machine assembly. After the construction of the vertical structural wall on the third floor of the core tube is completed, install the out - building machine assembly and the in - building machine assemblies numbered N13 and N20. The out - building machine assembly includes an outer wall - attached support installed on the outside of the core tube, an outer hydraulic climbing member installed on the outer wall - attached support, an outer lower frame installed on the outer hydraulic climbing member, an outer hanging bracket installed at the bottom of the outer lower frame, and an outer upper frame installed at the top of the outer lower frame. An outer protective steel wire mesh is provided on the outside of the outer lower frame, outer hanging bracket, and outer upper frame. The out - building machine assembly is divided into an outer upper operation area, an outer middle operation area, an outer lower operation area, and an outer bottom operation area from top to bottom. Rebar tying operations are carried out in the outer upper operation area, formwork support, formwork closing, formwork removal, and formwork cleaning operations are carried out in the outer middle operation area, climbing operations are carried out in the outer lower operation area, and disassembly, cleaning, and maintenance operations are carried out in the outer bottom operation area. When the out - building machine assembly climbs, it drives the formwork on the outside of the corresponding core tube to climb.

[0010] When in the arc beam layer, two external building machine components numbered W5 and W10 are respectively installed on the arc beams arranged oppositely. When in the straight beam layer, the two external building machine components numbered W5 and W10 are installed on the straight beam through an attachment plate bracket. The attachment plate bracket is arranged in an umbrella shape with a larger outer part and a smaller inner part, and the attachment plate bracket is reinforced and connected by multiple telescopic tie rods; the external building machine component is installed at the end of the cantilever end of the attachment plate bracket; a diagonal bracing member is arranged between the external building machine component and the core tube; four wall top legs are installed on one side of the external building machine component close to the core tube. When the external building machine component climbs, at least one of the four wall top legs supports on the outer wall of the core tube; the width of the two external building machine components numbered W5 and W10 along the radial direction of the core tube is smaller than the width of the external building machine components numbered W1 - W4 and W6 - W9; a flap is arranged on the two external building machine components numbered W5 and W10. One end of the flap is hinged and installed on the external building machine component, and the other end of the flap is connected to the external building machine component through a cable. The length of the flap is adapted to the distance between the straight beam and the external building machine component;

[0011] Step Four: The internal building machine component and the external building machine component perform climbing operations. After the concrete in the core tube is poured and formed, the formworks on both the inner and outer sides of the core tube are withdrawn, the embedded deviation of the external wall attachment support and the internal wall attachment support is detected, and adjusted to the design range; after the concrete strength reaches more than 15 MPa, the external wall attachment support and the internal wall attachment support of the upper layer are installed, and the steel bars of the upper layer wall are tied;

[0012] Step Five: Construction of the top layer and the sub - top layer. After the core tube wall construction below the sub - top layer is completed, the two external building machine components numbered W5 and W10 stop climbing, and a scaffold is erected on the tops of the two external building machine components numbered W5 and W10 to construct the top layer and the sub - top layer;

[0013] Step Six: Demolition operations of the internal building machine component and the external building machine component. After the steel bars of the twenty - second floor are tied, the internal building machine components numbered N15 - N18 are demolished. After the steel bars of the thirty - third floor are tied, the internal building machine components numbered N13 - N14 and N19 - N20 are demolished. After the steel bars of the forty - second floor are tied, the internal building machine components numbered N12 and N21 are demolished; after the overall construction of the core tube is completed, the internal building machine component numbered N11 and all the external building machine components are demolished.

[0014] Preferably, the total height of the core tube is forty-five floors. The two ends of the elliptical tube monomers on the third to ninth floors, twelfth floor, thirteenth floor, twenty-third floor, twenty-fourth floor, thirty-fourth floor, thirty-fifth floor, thirty-seventh floor and forty-third floor are connected by the straight beams; the two ends of the elliptical tube monomers on the tenth floor, eleventh floor, fourteenth to twenty-second floors, twenty-fifth to thirty-third floors, thirty-sixth floor and thirty-eighth to forty-second floors are connected by the arc beams; the two ends of the elliptical tube monomer on the forty-fifth floor are open-ended.

[0015] Preferably, the wall thickness of the core tube has a variable cross-section. The wall thickness of the first and second floors is 1000 mm, the wall thickness of the third to sixth floors is 800 mm, the wall thickness of the seventh to thirteenth floors is 700 mm, the wall thickness of the fourteenth to twenty-fourth floors is 600 mm, the wall thickness of the twenty-fifth to thirty-fifth floors is 500 mm, and the wall thickness of the thirty-sixth to forty-fifth floors is 400 mm.

[0016] Preferably, sixteen elevator shafts are symmetrically arranged inside the two elliptical tube monomers. Six in-building construction machine components numbered N11 to N16 are arranged in eight elevator shafts of the elliptical tube monomer on the north side; seven in-building construction machine components numbered N17 to N23 are arranged in eight elevator shafts of the elliptical tube monomer on the south side; one elevator shaft is left vacant between N11 and N12, between N14 and N15, and between N18 and N19.

[0017] Preferably, in the second step, the in-building construction machine component vertically covers four floor heights; the top of the inner upper operation area also serves as a steel bar storage platform.

[0018] Preferably, in the second step, after the concrete in the elevator shaft where the in-building construction machine component is located reaches the demolding requirement, the formwork is retracted. At this time, the upper wall steel bars are tied with the help of the inner upper operation area. After the upper wall steel bars are tied, the in-building construction machine component is climbed. The in-building construction machine component drives the formwork in the elevator shaft to climb to the next construction layer; before climbing, the steel bars and materials located at the top of the inner upper operation area are lifted away, and after climbing to the position and passing the inspection and acceptance, they are stacked again.

[0019] Preferably, in the third step, a cantilever frame is set on the inner side of the top of the outer upper shelf, a manual hoist is set on the cantilever frame, and the outer formwork of the core tube is hung on the manual hoist after being retracted; an operation platform is set on the top of the outer upper shelf, and one end of the operation platform is cantilevered and arranged inside the outer upper shelf; the bearing load of the outer upper operation area is 5 kN / ㎡.

[0020] Preferably, the external building machine assembly is divided into four climbing working conditions, namely, the straight beam climbing to the straight beam condition, the straight beam climbing to the arc beam condition, the arc beam climbing to the arc beam condition, and the arc beam climbing to the straight beam condition. When there are non-standard floors, there is also a non-standard floor climbing working condition; under different climbing working conditions, the length of the top wall leg is adjusted so that at least one top wall leg supports on the outer wall of the core tube.

[0021] In the present invention, the core tube is arranged in an alternating manner of arc beams and straight beams on the east and west sides of different floors, so that the external building machine assemblies at the corresponding positions are divided into four climbing working conditions. Four top wall legs are arranged on the external building machine assembly for the four climbing working conditions, so as to ensure the vertical state of the external building machine assembly in different climbing working conditions and increase the stability and safety during the operation.

[0022] Both the external building machine assembly and the internal building machine assembly are vertically divided into four operation areas, and the construction operations of 3-4 floors can be carried out synchronously, improving the construction efficiency. The tops of the external building machine assembly and the internal building machine assembly can be used to carry the steel bars and materials for the construction of the whole floor, solving the problems of great constraints in the use and allocation of labor, mechanical equipment, production materials, etc. During the climbing process of the external building machine assembly and the internal building machine assembly, the formwork of the core tube can be synchronously lifted, reducing the hoisting times of the tower crane, improving the construction efficiency and reducing the construction cost.

[0023] Two external building machine assemblies numbered W5 and W10 are installed on the straight beam through the attachment plate bracket. The attachment plate bracket provides a basis for the vertical climbing of the external building machine assembly, enabling it to climb synchronously with other external building machine assemblies. The widths of the two external building machine assemblies numbered W5 and W10 along the radial direction of the core tube are smaller than those of the external building machine assemblies numbered W1-W4 and W6-W9, reducing the cantilever length on the straight beam floor and ensuring the safety of the operation. The turning plate is unfolded on the straight beam floor and turned down on the arc beam floor without affecting the climbing.

[0024] By adopting this building machine system, the horizontal floor and the core tube staircase can be constructed synchronously. In case of emergencies such as power outages and fires, workers can escape and self-rescue through the horizontal floor and the staircase, taking into account the safety of the operation. During the construction of the core tube, as the floor height increases, the unnecessary internal building machine assemblies are gradually removed to avoid the concentrated use of the tower crane during subsequent demolition operations and reduce the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic horizontal sectional view of the straight beam connection layer of the present invention;

[0026] Figure 2 It is a schematic state diagram of installing the external building machine assembly in the horizontal section of the arc beam connection layer of the present invention;

[0027] Figure 3Schematic diagram of the construction state of the external building machine component of the present invention;

[0028] Figure 4 Schematic diagram of the construction state of the internal building machine component of the present invention;

[0029] Figure 5 Schematic diagram of the installation state of the connecting cross beam, telescopic tie rod and reinforcement steel pipe of the present invention;

[0030] Figure 6 Schematic diagram of the partial structure of the external lower frame of the present invention;

[0031] Figure 7 Schematic diagram of the A-A cross-section of the present invention;

[0032] Figure 8 Schematic diagram of the installation of the external building machine component when the arc beam climbs to the straight beam working condition of the present invention;

[0033] Figure 9 Schematic diagram of the installation of the external building machine component when the arc beam climbs to the arc beam working condition of the present invention;

[0034] Figure 10 Schematic diagram of the installation of the external building machine component when the straight beam climbs to the arc beam working condition of the present invention;

[0035] Figure 11 Schematic diagram of the installation of the external building machine component when the straight beam climbs to the straight beam working condition of the present invention;

[0036] Figure 12 Elevation schematic diagram of the completed core tube construction of the present invention;

[0037] Figure 13 Partial structure schematic diagram of the unfolding and downward turning states of the turning plate of the present invention;

[0038] In the figure: 1. Oval-shaped cylinder monomer; 2. Arc beam; 3. Straight beam; 4. Elevator shaft; 5. Internal building machine component; 6. External building machine component; 7. Attachment plate support; 8. Top wall leg; 10. Connecting cross beam; 11. S-shaped connecting beam; 12. Telescopic tie rod; 13. Diagonal bracing member; 14. Turning plate; 50. Internal wall attachment support; 51. Internal hydraulic climbing member; 52. Internal lower frame; 53. Internal hanging rack; 54. Internal upper frame; 60. External wall attachment support; 61. External hydraulic climbing member; 62. External lower frame; 63. External hanging rack; 64. External upper frame; 65. External protective steel wire mesh; 66. Cantilever rack; 67. Operating platform; 80. Foundation support; 81. Adjusting rod; 110. Main support beam; 111. Inclined beam. Detailed implementation manners

[0039] The present invention will be further described below with reference to the accompanying drawings:

[0040] As Figures 1 to 13A construction method of a core tube building machine system based on the staggered arrangement of arc beams and straight beams is shown. The core tube includes two elliptical tube monomers 1 arranged on the structural foundation, and arc beams 2 and / or straight beams 3 connecting the two ends of the two elliptical tube monomers 1. In this embodiment, the total height of the core tube is forty-five floors. The first and second floors are integral tubular structures. At both ends of the elliptical tube monomer 1 on the third to ninth floors, twelfth floor, thirteenth floor, twenty-third floor, twenty-fourth floor, thirty-fourth floor, thirty-fifth floor, thirty-seventh floor and forty-third floor, straight beams 3 are used for connection. At both ends of the elliptical tube monomer 1 on the tenth floor, eleventh floor, fourteenth to twenty-second floors, twenty-fifth to thirty-third floors, thirty-sixth floor and thirty-eighth to forty-second floors, arc beams 2 are used for connection. The two ends of the elliptical tube monomer on the forty-fifth floor are open. This application only takes the forty-five-floor core tube as an example. Of course, core tubes with other numbers of floors arranged alternately with straight beams and arc beams are also within the protection scope of this application.

[0041] The wall thickness of the core tube is a variable cross-section. The wall thickness of the first and second floors is 1000 mm, the wall thickness of the third to sixth floors is 800 mm, the wall thickness of the seventh to thirteenth floors is 700 mm, the wall thickness of the fourteenth to twenty-fourth floors is 600 mm, the wall thickness of the twenty-fifth to thirty-fifth floors is 500 mm, and the wall thickness of the thirty-sixth to forty-fifth floors is 400 mm. The outer facade of the core tube is stepped.

[0042] In the construction floors connected by straight beams 3, multiple connecting cross beams 10 are arranged between the two elliptical tube monomers 1; in the construction floors connected by arc beams 2, an S-shaped connecting beam 11 is arranged between the two elliptical tube monomers 1. The S-shaped connecting beam 11 includes a main support beam 110 in the middle and inclined beams 111 fixedly arranged at both ends of the main support beam 110. The ends of the inclined beams 111 are connected to the inner side of the arc beam 2. The S-shaped connecting beam 11 and the connecting cross beam 10 are arranged vertically and alternately, increasing the structural stability of the core tube.

[0043] Inside the elliptical cylinder unit 1, multiple elevator shafts 4 are provided, and in the elevator shafts 4, in-situ building machine components 5 are installed. There are sixteen elevator shafts 4, and thirteen in-situ building machine components 5 are arranged in the sixteen elevator shafts 4, numbered N11 - N23 in sequence. Specifically, the sixteen elevator shafts 4 are symmetrically arranged inside the two elliptical cylinder units 1. Six in-situ building machine components 5 numbered N11 - N16 are arranged in the eight elevator shafts 4 of the elliptical cylinder unit 1 on the north side; seven in-situ building machine components 5 numbered N17 - N23 are arranged in the eight elevator shafts 4 of the elliptical cylinder unit 1 on the south side; among them, there is an empty elevator shaft 4 between the elevator shafts 4 where the in-situ building machine components 5 numbered N11 and N12, N14 and N15, and N18 and N19 are installed. The in-situ building machine components 5 numbered N11 and N17 are located on the west side inside the core tube, and the remaining in-situ building machine components 5 are installed and arranged eastward in sequence according to the numbering order.

[0044] Ten external building machine components 6 are arranged circumferentially outside the core tube, numbered W1 - W10 in sequence. Among them, the two external building machine components 6 numbered W5 and W10 are located outside the arc beam 2 or the straight beam 3, and the numbering order increases sequentially in the clockwise direction. Dumping platforms are arranged at the bottoms of the two external building machine components 6 numbered W4 and W9. The dumping platforms are installed outside the core tube through hydraulic climbing formwork. The dumping platforms are always located below the external building machine components 6 and are used for material transfer and garbage removal operations. The initial position of the dumping platform is on the fourth floor slab of the core tube and climbs upward step by step.

[0045] The external building machine components 6 and the in-situ building machine components 5 can be used for personnel vertical transportation and fire escape. Other horizontal structures (beams, slabs, etc.) inside the core tube except for the elevator shafts 4 are constructed synchronously, and the outer frame steel structure is constructed later.

[0046] The construction method includes the following steps:

[0047] Step 1, foundation construction. First, construct the pile raft foundation, and then construct the first and second floors of the core tube on the pile raft foundation. When constructing the first and second floors, operate by erecting a scaffold.

[0048] Step 2: Installation of the in-house building machine assembly 5. After the construction of the vertical structural wall of the second floor of the core tube is completed, the in-house building machine assemblies 5 numbered N11 - N12, N14 - N19, and N21 - N23 are installed. The in-house building machine assembly 5 includes an in-house wall support 50 installed in the elevator shaft 4, an in-house hydraulic climbing member 51 installed on the in-house wall support 50, an in-house lower frame 52 fixedly installed on the in-house hydraulic climbing member 51, an in-house hanging bracket 53 fixedly installed at the bottom of the in-house lower frame 52, and an in-house upper frame 54 fixedly installed at the top of the in-house lower frame 52. The in-house hydraulic climbing member 51 can climb vertically along the in-house wall support 50, driving the in-house lower frame 52, the in-house hanging bracket 53, and the in-house upper frame 54 to climb. The in-house building machine assembly 5 vertically covers the height of four construction floors; the top of the in-house upper operation area also serves as a steel bar storage platform, and the load-bearing capacity of the in-house upper operation area is not less than 5 kN / ㎡. In this embodiment, the load-bearing capacity of the in-house upper operation area is 5 kN / ㎡.

[0049] The in-house building machine assembly 5 is divided into an in-house upper operation area, an in-house middle operation area, an in-house lower operation area, and an in-house bottom operation area from top to bottom. Among them, the in-house upper frame 54 is provided with four floors. The upper two floors of the in-house upper frame 54 are the in-house upper operation area, where steel bar binding operations are carried out; the remaining two floors of the in-house upper frame 54 are the in-house middle operation area, where formwork support, formwork closing, formwork removal, and formwork cleaning operations are carried out; the in-house lower frame 52 is the in-house lower operation area, where climbing operations are carried out; the in-house hanging bracket 53 is the in-house bottom operation area, where disassembly, cleaning, and maintenance operations are carried out; when the in-house building machine assembly 5 climbs, it drives the formwork on the four sides in the corresponding elevator shaft 4 to climb. A manual hoist is installed on the in-house upper frame 54, and the formwork on the four sides in the elevator shaft 4 is installed on the manual hoist to drive its lifting.

[0050] When the concrete in the elevator shaft where the in-house building machine assembly 5 is located reaches the formwork removal requirement, the formwork is retracted. At this time, the upper layer of wall steel bars are tied with the help of the in-house upper operation area. After the upper layer of wall steel bars are tied, the in-house building machine assembly 5 is climbed, and the in-house building machine assembly 5 drives the formwork in the elevator shaft to climb to the previous construction floor; before climbing, the steel bars and materials located at the top of the in-house upper operation area are lifted away, and after climbing to the position and passing the inspection and acceptance, they are stacked again.

[0051] Step 3: Installation of the external building machine assembly 6. After the construction of the vertical structural wall of the third floor of the core tube is completed, install the external building machine assembly 6 and the internal building machine assemblies 5 numbered N13 and N20. The external building machine assembly 6 includes an external wall support 60 fixedly installed on the outside of the core tube, an external hydraulic climbing member 61 installed on the external wall support 60, an external lower frame 62 fixedly installed on the external hydraulic climbing member 61, an external hanging frame 63 fixedly installed at the bottom of the external lower frame 62, and an external upper frame 64 fixedly installed at the top of the external lower frame 62. An external protective steel mesh 65 is fixedly arranged on the outside of the external lower frame 62, the external hanging frame 63, and the external upper frame 64. The external building machine assembly 6 vertically covers the height of four construction floors; the external hydraulic climbing member 61 climbs vertically along the external wall support 60, driving the external lower frame 62, the external hanging frame 63, the external upper frame 64, and the external protective steel mesh 65 to climb synchronously.

[0052] A cantilever frame 66 is fixedly arranged on the inner side of the top of the external upper frame 64. A manual hoist is arranged on the bottom of the cantilever of the cantilever frame 66. After the formwork on the outside of the core tube is retracted, it is hooked on the manual hoist to drive the formwork to climb synchronously. An operation platform 67 is arranged on the top of the external upper frame 64, and one end of the operation platform 67 is cantilevered and arranged on the inside of the external upper frame 64.

[0053] The external building machine assembly 6 is divided into an external upper operation area, an external middle operation area, an external lower operation area, and an external bottom operation area from top to bottom. Among them, the external upper frame 64 is provided with four floors. The upper two floors of the external upper frame 64 are the external upper operation area, and the steel bar binding operation is carried out in the external upper operation area. The remaining two floors of the external upper frame 64 are the external middle operation area, and the formwork support, formwork closing, formwork removal, and formwork cleaning operations are carried out in the external middle operation area; the external lower frame 62 is the external lower operation area, and the climbing operation is carried out in the external lower operation area; the external hanging frame 63 is the external bottom operation area, and the disassembly, cleaning, and maintenance operations are carried out in the external bottom operation area; when the external building machine assembly 6 climbs, it drives the corresponding formwork on the outside of the core tube to climb; the bearing load of the external upper operation area is 5 kN / ㎡.

[0054] When at the arc beam layer 2, two external building machine assemblies 6 numbered W5 and W10 are respectively installed on two arc beams 2 arranged opposite to each other in the east and west.

[0055] When at the straight beam layer 3, two external building machine assemblies 6 numbered W5 and W10 are installed on the straight beam 3 through the attachment plate support 7. The attachment plate support 7 is arranged in the form of an umbrella with a large outside and a small inside. The attachment plate support 7 is reinforced and connected by multiple telescopic tie rods 12. The structural strength of the attachment plate support 7 is increased through the telescopic tie rods 12 to form a framework with high structural stability. The external building machine assembly 6 is installed at the end of the cantilever end of the attachment plate support 7; a diagonal bracing member 13 is arranged between the external building machine assembly 6 and the core tube. The stability of the installation of the external building machine assembly 6 is increased through the diagonal bracing member 13. Specifically, one end of the diagonal bracing member 13 is fixedly connected to the external upper frame 64.

[0056] Four top wall legs 8 are installed on one side of the external building machine assembly 6 close to the core tube. When the external building machine assembly 6 climbs, at least one of the four top wall legs 8 supports on the outer wall of the core tube. The top wall leg 8 includes a base bracket 80 fixedly installed on the guide rail in the external hydraulic climbing member 61 and adjusting rods 81 adjustably installed at both ends of the base bracket 80. By adjusting the installation position of the adjusting rods 81, the change in the distance between it and the outer wall of the core tube is adapted, ensuring the verticality of the external building machine assembly 6 and improving the safety of the operation.

[0057] The widths of the two external building machine assemblies 6 numbered W5 and W10 along the radial direction of the core tube are smaller than those of the external building machine assemblies 6 numbered W1 - W4 and W6 - W9, reducing the length and weight of the cantilever when on the straight beam 3 layer, ensuring the safety of the construction, and ensuring the safety and versatility of the construction on the outer side of the core tube with an uneven facade structure. Flap plates 14 are provided on the two external building machine assemblies 6 numbered W5 and W10. One end of the flap plate 14 is hinged to the external building machine assembly 6, and the other end of the flap plate 14 is connected to the external building machine assembly 6 by a cable or wire rope. The length of the flap plate 14 is adapted to the distance between the straight beam 3 and the external building machine assembly 6. When constructing on the straight beam 3 layer, the flap plate 14 is unfolded, and the unfolded flap plate 14 provides safety protection for the gap between the straight beam 3 and the external building machine assembly 6. When constructing on the arc beam 2 layer, the flap plate 14 is turned downwards, without affecting the overall climbing. It can adapt to different climbing working conditions and has strong safety protection ability. In Figure 13 Among them, the upper flap plate 14 is in the turned - down state, and the lower flap plate 14 is in the unfolded state.

[0058] Step 4: The internal building machine assembly 5 and the external building machine assembly 6 perform climbing operations. After the concrete in the core tube is poured and formed, the formworks on both the inner and outer sides of the core tube are retracted, and the embedded deviations of the corresponding external wall attachment supports 60 and internal wall attachment supports 50 are respectively detected and adjusted to the design range; after the concrete strength reaches above 15 MPa, the upper - layer external wall attachment supports 60 and internal wall attachment supports 50 are installed, and the steel bars of the upper - layer wall are tied.

[0059] Due to the alternating arrangement of the straight beam 3 and the arc beam 2, the external building machine assembly 6 has four climbing working conditions, namely the straight beam 3 climbing to the straight beam 3 working condition, the straight beam 3 climbing to the arc beam 2 working condition, the arc beam 2 climbing to the arc beam 2 working condition, and the arc beam 2 climbing to the straight beam 3 working condition. When there are non - standard floors, there is also a non - standard floor climbing working condition. In this embodiment, the floor heights of the thirty - fourth floor, the twelfth floor, and the twenty - third floor are 5.5 m, the floor height of the first floor is 7.8 m, and the floor heights of the remaining floors are 4.2 m; under different climbing working conditions, the length of the adjusting rod 81 is adjusted so that at least one top wall leg 8 supports on the outer wall of the core tube.

[0060] Step 5: Construction of the top floor and the second top floor. After the construction of the core wall below the second top floor is completed, the two external building machine components 6 numbered W5 and W10 stop climbing, and a scaffold is erected on the tops of the two external building machine components 6 numbered W5 and W10 to construct the top floor and the second top floor.

[0061] Step 6: Demolition operation of the internal building machine components 5 and the external building machine components 6. After the steel bar binding of the 22nd floor is completed, the internal building machine components 5 numbered N15 - N18 are demolished. After the steel bar binding of the 33rd floor is completed, the internal building machine components 5 numbered N13 - N14 and N19 - N20 are demolished. After the steel bar binding of the 42nd floor is completed, the internal building machine components 5 numbered N12 and N21 are demolished. After the overall construction of the core wall is completed, the internal building machine component 5 numbered N11 and all the external building machine components 6 are demolished.

[0062] The above embodiments are only several illustrations of the concept and implementation of the present invention, and do not limit it. Under the concept of the present invention, the technical solutions without substantial transformation are still within the protection scope.

Claims

1. A construction method of a core tube building machine system based on the staggered arrangement of arc beams and straight beams, characterized in that: The core tube includes two elliptical tube monomers arranged on the structural foundation, and arc beams and / or straight beams connecting the ends of the two elliptical tube monomers. A plurality of elevator shafts are arranged inside the elliptical tube monomers, and in-building construction machine components are installed in the elevator shafts. Ten out-building construction machine components are arranged circumferentially outside the core tube, numbered W1 to W10 in sequence, and two of the out-building construction machine components numbered W5 and W10 are located outside the arc beam or straight beam. Sixteen elevator shafts are provided, and thirteen of the in-building construction machine components are arranged in the sixteen elevator shafts, numbered N11 to N23 in sequence; The construction method includes the following steps: Step 1, foundation construction. First, construct the pile raft foundation, and then construct the first and second floors of the core tube on the pile raft foundation; Step 2, installation of in-building construction machine components. After the vertical structural walls of the second floor of the core tube are constructed, install the in-building construction machine components numbered N11 - N12, N14 - N19, and N21 - N23. When the in-building construction machine components climb, they drive the four-side formwork in the corresponding elevator shafts to climb; Step 3, installation of out-building construction machine components. After the vertical structural walls of the third floor of the core tube are constructed, install the out-building construction machine components and the in-building construction machine components numbered N13 and N20. When the out-building construction machine components climb, they drive the formwork outside the corresponding core tube to climb; Step 4, climbing operation of in-building and out-building construction machine components. After the concrete of the core tube is poured and formed, retract the formwork on both the inside and outside of the core tube, detect the embedded deviation of the external wall supports and the internal wall supports, and adjust it within the design range. After the concrete strength reaches above 15 MPa, install the upper-layer external wall supports and internal wall supports, and tie the steel bars of the upper-layer wall; Step 5, construction of the top floor and the sub-top floor. After the core tube walls below the sub-top floor are constructed, the two out-building construction machine components numbered W5 and W10 stop climbing, and scaffolds are erected on the tops of the two out-building construction machine components numbered W5 and W10 to construct the top floor and the sub-top floor; Step 6, demolition operation of in-building and out-building construction machine components. After the steel bars of the twenty-second floor are tied, demolish the in-building construction machine components numbered N15 - N18. After the steel bars of the thirty-third floor are tied, demolish the in-building construction machine components numbered N13 - N14 and N19 - N20. After the steel bars of the forty-second floor are tied, demolish the in-building construction machine components numbered N12 and N21. After the overall construction of the core tube is completed, demolish the in-building construction machine component numbered N11 and all the out-building construction machine components.

2. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 1, characterized in that: In the second step, the internal building machine assembly includes an internal wall attachment support installed in the elevator shaft, an internal hydraulic climbing member installed on the internal wall attachment support, an internal lower frame installed on the internal hydraulic climbing member, an internal hanging bracket installed at the bottom of the internal lower frame, and an internal upper frame installed at the top of the internal lower frame; the internal building machine assembly is divided into an internal upper operation area, an internal middle operation area, an internal lower operation area, and an internal bottom operation area from top to bottom. Steel bar binding operations are carried out in the internal upper operation area, formwork support, formwork closing, formwork removal, and formwork cleaning operations are carried out in the internal middle operation area, climbing operations are carried out in the internal lower operation area, and disassembly, cleaning, and maintenance operations are carried out in the internal bottom operation area.

3. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 2, characterized in that: The external building machine assembly includes an external wall attachment support installed on the outside of the core tube, an external hydraulic climbing member installed on the external wall attachment support, an external lower frame installed on the external hydraulic climbing member, an external hanging bracket installed at the bottom of the external lower frame, and an external upper frame installed at the top of the external lower frame. An external protective steel wire mesh is provided on the outside of the external lower frame, the external hanging bracket, and the external upper frame; the external building machine assembly is divided into an external upper operation area, an external middle operation area, an external lower operation area, and an external bottom operation area from top to bottom. Steel bar binding operations are carried out in the external upper operation area, formwork support, formwork closing, formwork removal, and formwork cleaning operations are carried out in the external middle operation area, climbing operations are carried out in the external lower operation area, and disassembly, cleaning, and maintenance operations are carried out in the external bottom operation area; In the arc beam layer, two external building machine assemblies numbered W5 and W10 are respectively installed on the oppositely arranged arc beams. In the straight beam layer, two external building machine assemblies numbered W5 and W10 are installed on the straight beam through an attachment plate support. The attachment plate support is arranged in the form of an umbrella with a large outer part and a small inner part. The attachment plate support is reinforced and connected by multiple telescopic tie rods; the external building machine assembly is installed at the end of the cantilever end of the attachment plate support; a diagonal bracing member is provided between the external building machine assembly and the core tube; four top wall legs are installed on the side of the external building machine assembly close to the core tube. When the external building machine assembly climbs, at least one of the four top wall legs supports on the outer wall of the core tube; the width of the two external building machine assemblies numbered W5 and W10 along the radial direction of the core tube is smaller than the width of the external building machine assemblies numbered W1 - W4 and W6 - W9; a flap is provided on the two external building machine assemblies numbered W5 and W10. One end of the flap is hinged and installed on the external building machine assembly, and the other end of the flap is connected to the external building machine assembly by a cable. The length of the flap is adapted to the distance between the straight beam and the external building machine assembly.

4. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 1, characterized in that: The total height of the core tube is forty-five floors. The two ends of the elliptical tube monomers on the third to ninth floors, the twelfth floor, the thirteenth floor, the twenty-third floor, the twenty-fourth floor, the thirty-fourth floor, the thirty-fifth floor, the thirty-seventh floor, and the forty-third floor are connected by the straight beams; the two ends of the elliptical tube monomers on the tenth floor, the eleventh floor, the fourteenth to twenty-second floors, the twenty-fifth to thirty-third floors, the thirty-sixth floor, and the thirty-eighth to forty-second floors are connected by the arc beams; the two ends of the elliptical tube monomer on the forty-fifth floor are open.

5. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 4, characterized in that: The wall thickness of the core tube has a variable cross-section. The wall thickness of the first and second floors is 1000 mm, the wall thickness of the third to sixth floors is 800 mm, the wall thickness of the seventh to thirteenth floors is 700 mm, the wall thickness of the fourteenth to twenty-fourth floors is 600 mm, the wall thickness of the twenty-fifth to thirty-fifth floors is 500 mm, and the wall thickness of the thirty-sixth to forty-fifth floors is 400 mm.

6. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 1 or 5, characterized in that: Sixteen elevator shafts are symmetrically arranged inside two elliptical tube monomers. Six in-situ building machine components numbered N11 to N16 are arranged in eight elevator shafts of the elliptical tube monomer on the north side; seven in-situ building machine components numbered N17 to N23 are arranged in eight elevator shafts of the elliptical tube monomer on the south side; one elevator shaft is left vacant between N11 and N12, between N14 and N15, and between N18 and N19.

7. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 2, characterized in that: In the second step, the in-situ building machine component vertically covers four floor heights; the top of the inner upper operation area also serves as a steel bar storage platform.

8. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 7, characterized in that: In the second step, when the concrete in the elevator shaft where the in-situ building machine component is located reaches the demoulding requirement, the formwork is retracted. At this time, the steel bars of the upper wall are tied with the help of the inner upper operation area. After the steel bars of the upper wall are tied, the in-situ building machine component is climbed. The in-situ building machine component drives the formwork in the elevator shaft to climb to the upper construction layer; before climbing, the steel bars and materials located at the top of the inner upper operation area are lifted away and stacked again after passing the inspection and acceptance after climbing in place.

9. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 3, characterized in that: In the third step, a cantilever scaffold is set on the inner side of the top of the outer upper scaffold, and a manual hoist is set on the cantilever scaffold. After the formwork on the outside of the core tube is retracted, it is hung on the manual hoist; an operation platform is set on the top of the outer upper scaffold, and one end of the operation platform is cantilevered and arranged inside the outer upper scaffold; the bearing load of the outer upper operation area is 5 kN / ㎡.

10. The construction method of the core tube building machine system based on the staggered arrangement of arc beams and straight beams according to claim 9, characterized in that: The outer building machine component is divided into four climbing working conditions, namely straight beam climbing to straight beam working condition, straight beam climbing to arc beam working condition, arc beam climbing to arc beam working condition, and arc beam climbing to straight beam working condition. When there are non-standard floors, there is also a non-standard floor climbing working condition; under different climbing working conditions, the length of the top wall support leg is adjusted so that at least one top wall support leg supports on the outer wall of the core tube.

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