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

Abstract

The invention discloses a construction method of a core tube building machine system based on staggered arrangement of arc beams and straight beams, a core tube comprises two elliptical tube single bodies connected through the arc beams and / or the straight beams, an elevator shaft is arranged on the inner sides of the elliptical tube single bodies, and an inner building machine assembly is installed in the elevator shaft; an external building machine assembly is arranged on the outer side of the core tube in the circumferential direction; the construction method comprises the steps of foundation construction; after construction of the second-layer vertical structure wall body of the core tube is completed, an internal building machine assembly is installed; after construction of the third layer of vertical structure wall body of the core tube is completed, an external building machine assembly is installed; the inner building machine assembly and the outer building machine assembly perform climbing operation; constructing a top layer and a secondary top layer; and the inner building machine assembly and the outer building machine assembly are disassembled. According to the method, sequential construction can be conducted according to different structures of the core tube, the number of times of tower crane hoisting is reduced, the requirements for material stacking and allocation are met, operation safety is considered, and escape conditions are provided.

Description

Technical Field

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

[0002] The core tube has good structural stress and excellent earthquake resistance, and is the mainstream structural form widely used in super high-rise buildings in the world. During the construction of the core tube, a building machine system is usually used for operation. Traditional core tubes often concentrate a large number of vertical transportation facilities (such as elevator shafts) and equipment pipelines. During the construction process, the vertical transportation of personnel, materials and equipment depends on these limited channels. As the height of the building increases, the distance and difficulty of vertical transportation continue to increase, and problems such as low transportation efficiency and long waiting time may occur, affecting the overall construction progress. And when the shape and size of the facade of the core tube structure change, it is usually necessary to set up scaffolding for auxiliary operations, which affects the construction efficiency. During construction, the dismantled formwork needs to be hoisted to the ground, cleaned, and then hoisted to the upper construction layer. This repeatedly increases the number of hoisting times of the tower crane, and the construction cost is high. 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. The method can perform sequential construction for different structures of the core tube, save the number of tower crane hoisting times, meet the needs of material stacking and allocation, take into account operation safety, provide escape conditions, and reduce construction costs.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A construction method for a core tube building machine system based on the staggered arrangement of arc beams and straight beams, the core tube comprising 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 on the inner side of the elliptical tube monomers, an inner building machine assembly is installed in the elevator shaft, ten outer building machine assemblies are arranged circumferentially on the outer side of the core tube, numbered W1 to W10 in sequence, wherein the two outer building machine assemblies numbered W5 and W10 are located on the outer side of the arc beams or straight beams; sixteen elevator shafts are arranged, and thirteen inner building machine assemblies are arranged in the sixteen elevator shafts, numbered N11 to N23 in sequence; The construction method comprises the following steps: Step 1: foundation construction, first constructing a pile raft foundation, and then constructing the first and second layers of the core tube on the pile raft foundation; Step 2: Installation of the internal building machine assembly. After the construction of the second-layer vertical structural wall of the core tube is completed, the internal building machine assemblies numbered N11~N12, N14~N19 and N21~N23 are installed. The internal building machine assembly includes an internal wall support installed in the elevator shaft, an internal hydraulic climbing member installed on the internal wall support, an internal lower frame installed on the internal hydraulic climbing member, an internal hanger 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, and reinforcement binding operations are performed in the internal upper operation area, and formwork support, mold closing, mold removal and template cleaning operations are performed in the internal middle operation area. Climbing operations are performed in the internal lower operation area, and disassembly, cleaning and maintenance operations are performed in the internal bottom operation area; when the internal building machine assembly climbs, it drives the corresponding four sides of the elevator shaft to climb; Step three, installation of external building machine components. After the construction of the third-layer vertical structural wall of the core tube is completed, the external building machine components and the internal building machine components numbered N13 and N20 are installed. The external building machine components include an external wall support installed on the outer side of the core tube, an external hydraulic climbing component installed on the external wall support, an external lower frame installed on the external hydraulic climbing component, an external hanging frame installed at the bottom of the external lower frame, and an external upper frame installed at the top of the external lower frame. External protective steel plate mesh is arranged on the outside of the external lower frame, the external hanging frame and the external upper frame; the external building machine components are divided into an external upper operating area, an external middle operating area, an external lower operating area and an external bottom operating area from top to bottom, and reinforcement binding operations are performed in the external upper operating area, formwork support, mold closing, mold removal and template cleaning operations are performed in the external middle operating area, climbing operations are performed in the external lower operating area, and disassembly, cleaning and maintenance operations are performed in the external bottom operating area; when the external building machine components climb, they drive the corresponding core tube outer template to climb; In the arc beam layer, two external building machine assemblies numbered W5 and W10 are respectively installed on the arc beams arranged opposite to each other. In the straight beam layer, two external building machine assemblies numbered W5 and W10 are installed on the straight beams through the attached plate brackets. The attached plate brackets are arranged in an umbrella-like form with a large outside and a small inside. The attached plate brackets are reinforced and connected by multiple retractable tie rods; the external building machine assembly is installed at the end of the cantilevered end of the attached plate bracket; a diagonal brace tie piece is arranged between the external building machine assembly and the core tube; four top wall supports 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 is supported 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 hingedly mounted on the external building machine assembly, and the other end of the flap is connected to the external building machine assembly through a cable, and the length of the flap is adapted to the distance between the straightening beam and the external building machine assembly; Step 4: Climbing operation of the inner and outer building machine components. After the concrete of the core tube is poured and formed, the templates on both sides of the core tube are withdrawn, and the embedded deviation of the outer and inner wall supports is detected and adjusted to within the design range; after the concrete strength reaches more than 15MPa, the upper outer and inner wall supports are installed, and the upper wall reinforcement is tied; Step 5: Construction of the top and second top floors. After the construction of the core tube wall below the second top floor is completed, the two external building machine components numbered W5 and W10 stop climbing, and scaffolding is set up on the top of the two external building machine components numbered W5 and W10 to construct the top and second top floors; Step six, dismantling of inner and outer building machine assemblies. After the reinforcement of the 22nd floor is completed, the inner building machine assemblies numbered N15 to N18 are dismantled. After the reinforcement of the 33rd floor is completed, the inner building machine assemblies numbered N13 to N14 and N19 to N20 are dismantled. After the reinforcement of the 42nd floor is completed, the inner building machine assemblies numbered N12 and N21 are dismantled. After the overall construction of the core tube is completed, the inner building machine assembly numbered N11 and all outer building machine assemblies are dismantled.

[0005] Preferably, the core tube has a total height of forty-five floors, and 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; and the two ends of the elliptical tube monomer on the forty-fifth floor are open.

[0006] Preferably, the wall thickness of the core tube is a variable cross-section, the wall thickness of the first and second layers is 1000mm, the wall thickness of the third to sixth layers is 800mm, the wall thickness of the seventh to thirteenth layers is 700mm, the wall thickness of the fourteenth to twenty-fourth layers is 600mm, the wall thickness of the twenty-fifth to thirty-fifth layers is 500mm, and the wall thickness of the thirty-sixth to forty-fifth layers is 400mm.

[0007] Preferably, sixteen elevator shafts are symmetrically arranged on the inner side of the two elliptical cylinder units, and six internal building machine assemblies numbered N11 to N16 are arranged in the eight elevator shafts of the elliptical cylinder unit on the north side; seven internal building machine assemblies numbered N17 to N23 are arranged in the eight elevator shafts of the elliptical cylinder unit on the south side; among them, there is an empty elevator shaft between N11 and N12, between N14 and N15, and between N18 and N19.

[0008] Preferably, in step 2, the internal building machine assembly vertically covers four storeys; the top of the internal upper operating area also serves as a steel bar storage platform.

[0009] Preferably, in step 2, when the concrete in the elevator shaft where the inner building machine assembly is located reaches the demolding requirements, the formwork is withdrawn, and the upper wall reinforcement is tied with the help of the inner upper operating area. When the upper wall reinforcement is tied, the inner building machine assembly is climbed, and the inner building machine assembly drives the formwork in the elevator shaft to climb to the upper construction layer; before climbing, the steel bars and materials at the top of the inner upper operating area are hoisted away, and they are stacked after climbing into place and inspected and accepted.

[0010] Preferably, in step three, a cantilever frame is provided on the inner side of the top of the outer frame, a manual hoist is provided on the cantilever frame, and the outer side template of the core tube is hung on the manual hoist after being withdrawn; an operating platform is provided on the top of the outer frame, and one end of the operating platform is cantilevered on the inner side of the outer frame; the bearing load of the outer upper operating area is 5kN / ㎡.

[0011] Preferably, the external building machine component is divided into four climbing conditions, namely, straight beam climbing to straight beam condition, straight beam climbing to curved beam condition, curved beam climbing to curved beam condition and curved beam climbing to straight beam condition. When there is a non-standard layer, it also has a non-standard layer climbing condition. Under different climbing conditions, the length of the top wall support leg is adjusted so that at least one top wall support leg is supported on the outer wall of the core tube.

[0012] In the present invention, the core tube adopts an alternating arrangement of arc beams and straight beams on the east and west sides of different floors, so that the external building machine components at the corresponding positions are divided into four climbing conditions. Four top wall legs are arranged on the external building machine components for the four climbing conditions, so that the vertical state of the external building machine components can be guaranteed under different climbing conditions, thereby increasing stability and safety during the operation process.

[0013] The external building machine assembly and the internal building machine assembly are divided into four operating areas vertically, and can carry out construction work on 3-4 floors simultaneously, which improves construction efficiency. The top of the external building machine assembly and the internal building machine assembly can be used to carry the steel bars and materials for the entire floor construction, solving the problems of large constraints on the use and allocation of labor, machinery and equipment, production materials and other factors. During the climbing process, the external building machine assembly and the internal building machine assembly can drive the core tube template to rise synchronously, reducing the number of tower crane hoisting times, improving construction efficiency and reducing construction costs.

[0014] The two external building machine assemblies numbered W5 and W10 are installed on the straight beam through the attached plate bracket. The attached plate bracket provides a basis for the vertical climbing of the external building machine assemblies, so that it can climb synchronously with other external building machine assemblies. 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, which reduces the cantilever length at the straight beam layer and ensures the safety of the operation. The straight beam layer will unfold the flap, and the arc beam layer will flip the flap downward, which will not affect the climbing.

[0015] By adopting this building machine system, the horizontal floor slab and the core tube staircase can be constructed synchronously. In case of emergency such as power outage and fire, workers can escape and save themselves through the horizontal floor slab and the staircase, taking into account the safety of the operation. During the construction of the core tube, as the floors increase, unnecessary internal building machine components are gradually removed to avoid the concentrated use of tower cranes during subsequent demolition operations and reduce the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a horizontal cross-sectional schematic diagram of the straight beam connection layer of the present invention; Figure 2 It is a schematic diagram of the state of installing the external building machine assembly in the horizontal section of the arc beam connection layer of the present invention; Figure 3 It is a schematic diagram of the construction status of the external building machine assembly of the present invention; Figure 4 It is a schematic diagram of the construction status of the building construction machine components in the present invention; Figure 5 This is a schematic diagram of the installation state of the connecting beam, the telescopic pull rod and the reinforcement steel pipe of the present invention; Figure 6 It is a schematic diagram of the partial structure of the outer lower frame of the present invention; Figure 7 This is a schematic diagram of the AA section of the present invention; Figure 8 It is a schematic diagram of the installation of the building machine components for the working condition of the curved beam climbing to the straight beam of the present invention; Fig. 9 It is a schematic diagram of the installation of the building machine components when the arc beam climbs to the arc beam working condition of the present invention; Fig.10 It is a schematic diagram of the installation of the external building machine assembly for the straight beam climbing to the curved beam working condition of the present invention; Fig.11 It is a schematic diagram of the installation of the building machine assembly when the straight beam climbs to the straight beam working condition of the present invention; Fig.12 This is a schematic elevation diagram of the core tube construction of the present invention; Fig.13 It is a schematic diagram of the local structure of the flap in the unfolded and flipped-down states of the present invention; In the figure: 1. Elliptical cylinder; 2. Arc beam; 3. Straight beam; 4. Elevator shaft; 5. Internal building machine assembly; 6. External building machine assembly; 7. Attached plate bracket; 8. Top wall support leg; 10. Connecting crossbeam; 11. S-shaped connecting beam; 12. Retractable pull rod; 13. Diagonal brace anchor; 14. Flap; 50. Internal wall support; 51. Internal hydraulic climbing member; 52. Internal lower frame; 53. Internal hanging frame; 54. Internal upper frame; 60. External wall support; 61. External hydraulic climbing member; 62. External lower frame; 63. External hanging frame; 64. External upper frame; 65. External protective steel plate mesh; 66. Cantilever frame; 67. Operating platform; 80. Foundation bracket; 81. Adjustment rod; 110. Main support beam; 111. Diagonal beam. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings: like Figures 1 to 13 A 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 a 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 core tube has a total height of 45 floors, the first floor and the second floor are integral tube structures, and the two ends of the elliptical tube monomers 1 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 straight beams 3. The two ends of the elliptical tube monomers 1 on the tenth floor, the eleventh floor, the fourteenth floor to the twenty-second floor, the twenty-fifth floor to the thirty-third floor, the thirty-sixth floor and the thirty-eighth floor to the forty-second floor are connected by arc beams 2. The two ends of the elliptical tube monomer on the forty-fifth floor are open. This application only takes the forty-five-story core tube as an example. Of course, core tubes of other floors with alternating straight beams and arc beams are also within the protection scope of this application.

[0018] The wall thickness of the core tube is variable, with the first and second floors being 1000mm thick, the third to sixth floors being 800mm thick, the seventh to thirteenth floors being 700mm thick, the fourteenth to twenty-fourth floors being 600mm thick, the twenty-fifth to thirty-fifth floors being 500mm thick, and the thirty-sixth to forty-fifth floors being 400mm thick. The outer facade of the core tube is stepped.

[0019] In the construction layer connected by the straight beams 3, a plurality of connecting cross beams 10 are arranged between the two elliptical tube monomers 1; in the construction layer connected by the arc beams 2, an S-shaped connecting beam 11 is arranged between the two elliptical tube monomers 1, and the S-shaped connecting beam 11 includes a main support beam 110 located in the middle and oblique beams 111 fixedly arranged at both ends of the main support beam 110, and the ends of the oblique beam 111 are connected to the inner side of the arc beam 2. The S-shaped connecting beams 11 and the connecting cross beams 10 are arranged alternately vertically, which increases the structural stability of the core tube.

[0020] A plurality of elevator shafts 4 are arranged inside the elliptical cylinder monomer 1, and internal building machine assemblies 5 are installed in the elevator shafts 4. Sixteen elevator shafts 4 are arranged, and thirteen internal building machine assemblies 5 are arranged in the sixteen elevator shafts 4, which are numbered N11 to N23 in sequence. Specifically, the sixteen elevator shafts 4 are symmetrically arranged inside the two elliptical cylinder monomers 1. Six internal building machine assemblies 5 numbered N11 to N16 are arranged in the eight elevator shafts 4 of the elliptical cylinder monomer 1 located on the north side; seven internal building machine assemblies 5 numbered N17 to N23 are arranged in the eight elevator shafts 4 of the elliptical cylinder monomer 1 located on the south side; among them, there is an empty elevator shaft 4 between the elevator shafts 4 where the internal building machine assemblies 5 numbered N11 and N12, N14 and N15, and N18 and N19 are installed. The internal building machine assemblies 5 numbered N11 and N17 are located on the west side of the core tube, and the remaining internal building machine assemblies 5 are arranged eastward in the order of installation numbers.

[0021] Ten external building machine assemblies 6 are arranged in the circumferential direction outside the core tube, numbered W1 to W10 in sequence, of which two external building machine assemblies 6 numbered W5 and W10 are located outside the arc beam 2 or the straight beam 3, and the numbering sequence increases in sequence in the clockwise direction. An unloading platform is arranged at the bottom of the two external building machine assemblies 6 numbered W4 and W9, which are installed on the outside of the core tube through a hydraulic climbing formwork. The unloading platform is always located below the external building machine assembly 6 and is used for material transport and garbage removal operations. The initial position of the unloading platform is located on the fourth floor slab of the core tube, and gradually climbs upwards.

[0022] The outer building machine assembly 6 and the inner building machine assembly 5 can provide vertical transportation for personnel and fire escape. Other horizontal structures (beams, plates, etc.) in the core tube except the elevator shaft 4 are constructed simultaneously, and the outer frame steel structure is constructed later.

[0023] The construction method includes the following steps: Step 1: foundation construction. First, construct the pile raft foundation. Then, construct the first and second layers of the core tube on the pile raft foundation. The construction of the first and second layers is carried out by setting up scaffolding.

[0024] Step 2: Installation of the internal building machine assembly 5. After the second layer of vertical structural wall construction of the core tube is completed, the internal building machine assembly 5 numbered N11-N12, N14-N19 and N21-N23 is installed. The internal building machine assembly 5 includes an internal wall support 50 installed in the elevator shaft 4, an internal hydraulic climbing member 51 installed on the internal wall support 50, an internal lower frame 52 fixedly installed on the internal hydraulic climbing member 51, an internal hanging frame 53 fixedly installed at the bottom of the internal lower frame 52, and an internal upper frame 54 fixedly installed at the top of the internal lower frame 52. The internal hydraulic climbing member 51 can climb vertically along the internal wall support 50, driving the internal lower frame 52, the internal hanging frame 53 and the internal upper frame 54 to climb. The inner building machine assembly 5 vertically covers the height of four construction layers; the top of the inner upper operating area also serves as a steel bar storage platform, and the bearing load of the inner upper operating area is not less than 5kN / ㎡. In this embodiment, the bearing load of the inner upper operating area is 5kN / ㎡.

[0025] The inner building machine assembly 5 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, wherein the inner upper frame 54 is provided with four layers in total, the upper two layers of the inner upper frame 54 are the inner upper operation area, where the reinforcement binding operation is performed; the remaining two layers of the inner upper frame 54 are the inner middle operation area, where the mold support, mold closing, mold removal and template cleaning operations are performed; the inner lower frame 52 is the inner lower operation area, where the climbing operation is performed; the inner hanging frame 53 is the inner bottom operation area, where the disassembly, cleaning and maintenance operations are performed; when the inner building machine assembly 5 climbs, it drives the templates on the four sides of the corresponding elevator shaft 4 to climb. A manual hoist is installed on the inner upper frame 54, and the templates on the four sides of the elevator shaft 4 are installed on the manual hoist to drive them to be lifted.

[0026] When the concrete in the elevator shaft where the inner building machine assembly 5 is located meets the demoulding requirements, the formwork is withdrawn. At this time, the upper wall reinforcement is tied with the help of the inner upper operating area. When the upper wall reinforcement is tied, the inner building machine assembly 5 is climbed. The inner building machine assembly 5 drives the formwork in the elevator shaft to climb to the upper construction layer; before climbing, the steel bars and materials at the top of the inner upper operating area are lifted away, and they are stacked after climbing to the position, inspection and acceptance.

[0027] Step 3, installation of the external building machine assembly 6. After the third-layer vertical structural wall of the core tube is completed, the external building machine assembly 6 and the internal building machine assembly 5 numbered N13 and N20 are installed. The external building machine assembly 6 includes an external wall support 60 fixedly installed on the outer side 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 plate mesh 65 is fixedly arranged outside 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 floor height of four construction layers; the external hydraulic climbing member 61 vertically climbs 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 plate mesh 65 to climb synchronously.

[0028] A cantilever frame 66 is fixedly arranged on the inner side of the top of the outer frame body 64, and a manual hoist is arranged on the cantilevered bottom of the cantilever frame 66. After the outer template of the core tube is withdrawn, it is hung on the manual hoist to drive the template to climb synchronously. An operating platform 67 is arranged on the top of the outer frame body 64, and one end of the operating platform 67 is cantilevered on the inner side of the outer frame body 64.

[0029] 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, wherein the external upper frame 64 is provided with four layers, the upper two layers of the external upper frame 64 are the external upper operation area, and the reinforcement binding operation is performed in the external upper operation area. The remaining two layers of the external upper frame 64 are the external middle operation area, and the mold support, mold closing, mold removal and template cleaning operations are performed in the external middle operation area; the external lower frame 62 is the external lower operation area, and the climbing operation is performed 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 performed in the external bottom operation area; when the external building machine assembly 6 climbs, it drives the corresponding core tube outer template to climb; the load-bearing load of the external upper operation area is 5kN / ㎡.

[0030] When there are two arc beams, 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 directions.

[0031] When there are three layers of straight beams, two external building machine assemblies 6 numbered W5 and W10 are installed on the straight beam 3 through the attached plate bracket 7. The attached plate bracket 7 is arranged in an umbrella-like form with a large outside and a small inside. The attached plate bracket 7 is reinforced and connected by multiple retractable rods 12. The retractable rods 12 increase the structural strength of the attached plate bracket 7 to form a frame with high structural stability. The external building machine assembly 6 is installed at the end of the cantilevered end of the attached plate bracket 7; a diagonal brace anchor 13 is set between the external building machine assembly 6 and the core tube, and the diagonal brace anchor 13 increases the stability of the installation of the external building machine assembly 6. Specifically, one end of the diagonal brace anchor 13 is fixedly connected to the outer upper frame 64.

[0032] Four top wall legs 8 are installed on the 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 is supported on the outer wall of the core tube. The top wall legs 8 include a basic bracket 80 fixedly mounted on the guide rail of the external hydraulic climbing member 61 and an adjusting rod 81 adjustably mounted at both ends of the basic bracket 80. By adjusting the installation position of the adjusting rod 81 to adapt to the change of the distance between it and the outer wall of the core tube, the verticality of the external building machine assembly 6 is ensured, and the safety of the operation is improved.

[0033] The width of the two external building machine assemblies 6 numbered W5 and W10 along the radial direction of the core tube is smaller than the width of the external building machine assemblies 6 numbered W1-W4 and W6-W9, which reduces the length and weight of the cantilever when the straight beam is 3 layers, ensures the safety of construction, and ensures the safety and versatility of construction outside the core tube with uneven facade structure. A flap 14 is set on the two external building machine assemblies 6 numbered W5 and W10, one end of the flap 14 is hingedly installed on the external building machine assembly 6, and the other end of the flap 14 is connected to the external building machine assembly 6 through a cable or a wire rope. The length of the flap 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 14 is unfolded, and the unfolded flap 14 safely protects the gap between the straight beam 3 and the external building machine assembly 6. When constructing on the arc beam 2 layer, the flap 14 is flipped down, which does not affect the overall climbing. It can adapt to different climbing conditions and has a strong safety protection capability. exist Fig.13 In the embodiment, the upper flap 14 is in a flipped-down state, and the lower flap 14 is in an unfolded state.

[0034] Step 4: The inner building machine assembly 5 and the outer building machine assembly 6 are climbed. After the concrete of the core tube is cast and formed, the formwork on the inner and outer sides of the core tube is withdrawn, and the embedded deviations of the corresponding outer wall supports 60 and inner wall supports 50 are respectively detected and adjusted to within the design range; after the concrete strength reaches 15MPa or more, the upper outer wall supports 60 and inner wall supports 50 are installed, and the upper wall reinforcement is tied.

[0035] Due to the alternating arrangement of straight beams 3 and curved beams 2, the external building machine assembly 6 is divided into four climbing conditions, namely, the condition where straight beam 3 climbs to straight beam 3, the condition where straight beam 3 climbs to curved beam 2, the condition where curved beam 2 climbs to curved beam 2, and the condition where curved beam 2 climbs to straight beam 3. When there are non-standard floors, there is also a non-standard layer climbing condition. In this embodiment, the floor heights of the 34th, 12th and 23rd floors are 5.5m, the floor height of the first floor is 7.8m, and the floor heights of the remaining floors are 4.2m. Under different climbing conditions, the length of the adjusting rod 81 is adjusted so that at least one top wall leg 81 is supported on the outer wall of the core tube.

[0036] Step five, construction of the top and second top floors. After the construction of the core tube wall below the second top floor is completed, the two external building machine assemblies 6 numbered W5 and W10 stop climbing, and scaffolding is set up on the top of the two external building machine assemblies 6 numbered W5 and W10 to construct the top and second top floors.

[0037] Step six, dismantling the inner building machine components 5 and the outer building machine components 6. After the reinforcement of the 22nd floor is completed, the inner building machine components 5 numbered N15 to N18 are dismantled. After the reinforcement of the 33rd floor is completed, the inner building machine components 5 numbered N13 to N14 and N19 to N20 are dismantled. After the reinforcement of the 42nd floor is completed, the inner building machine components 5 numbered N12 and N21 are dismantled. After the overall construction of the core tube is completed, the inner building machine component 5 numbered N11 and all the outer building machine components 6 are dismantled.

[0038] The above embodiments are only some illustrations of the concept and implementation of the present invention, and are not intended to limit the same. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A construction method for 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 a structural foundation and an arc beam and / or a straight beam connecting the ends of the two elliptical tube monomers. A plurality of elevator shafts are arranged on the inner side of the elliptical tube monomers. An inner building machine assembly is installed in the elevator shaft. Ten outer building machine assemblies are arranged circumferentially on the outer side of the core tube, numbered W1 to W10 in sequence, wherein the two outer building machine assemblies numbered W5 and W10 are located on the outer side of the arc beam or the straight beam; sixteen elevator shafts are arranged, and thirteen inner building machine assemblies are arranged in the sixteen elevator shafts, numbered N11 to N23 in sequence; The construction method comprises the following steps: Step 1: foundation construction, first constructing a pile raft foundation, and then constructing the first and second layers of the core tube on the pile raft foundation; Step 2: Install the internal building machine components. After the second-layer vertical structure wall of the core tube is constructed, install the internal building machine components numbered N11-N12, N14-N19 and N21-N23. When the internal building machine components climb, they drive the corresponding four-side templates in the elevator shaft to climb; Step 3: Installation of the external building machine assembly. After the third-layer vertical structural wall of the core tube is completed, the external building machine assembly and the internal building machine assemblies numbered N13 and N20 are installed. When the external building machine assembly climbs, it drives the corresponding core tube outer template to climb; Step 4: Climbing operation of the inner and outer building machine components. After the concrete of the core tube is poured and formed, the templates on both sides of the core tube are withdrawn, and the embedded deviation of the outer and inner wall supports is detected and adjusted to within the design range; after the concrete strength reaches more than 15MPa, the upper outer and inner wall supports are installed, and the upper wall reinforcement is tied; Step 5: Construction of the top and second top floors. After the construction of the core tube wall below the second top floor is completed, the two external building machine components numbered W5 and W10 stop climbing, and scaffolding is set up on the top of the two external building machine components numbered W5 and W10 to construct the top and second top floors; Step six, dismantling of inner and outer building machine assemblies. After the reinforcement of the 22nd floor is completed, the inner building machine assemblies numbered N15 to N18 are dismantled. After the reinforcement of the 33rd floor is completed, the inner building machine assemblies numbered N13 to N14 and N19 to N20 are dismantled. After the reinforcement of the 42nd floor is completed, the inner building machine assemblies numbered N12 and N21 are dismantled. After the overall construction of the core tube is completed, the inner building machine assembly numbered N11 and all outer building machine assemblies are dismantled.

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 is characterized by: In the step 2, the internal building machine assembly includes an internal wall support installed in the elevator shaft, an internal hydraulic climbing member installed on the internal wall support, an internal lower frame installed on the internal hydraulic climbing member, an internal hanger 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 operating area, an internal middle operating area, an internal lower operating area and an internal bottom operating area from top to bottom, reinforcement binding operations are performed in the internal upper operating area, formwork support, mold closing, mold removal and template cleaning operations are performed in the internal middle operating area, climbing operations are performed in the internal lower operating area, and disassembly, cleaning and maintenance operations are performed in the internal bottom operating 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 is characterized by: The external building machine assembly includes an external wall support installed on the outer side of the core tube, an external hydraulic climbing member installed on the external wall support, an external lower frame installed on the external hydraulic climbing member, an external hanging frame installed at the bottom of the external lower frame, and an external upper frame installed at the top of the external lower frame. External protective steel plate mesh is arranged on the outside of the external lower frame, the external hanging frame 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, and reinforcement binding operations are performed in the external upper operation area, and mold support, mold closing, mold removal and template cleaning operations are performed in the external middle operation area. Climbing operations are performed in the external lower operation area, and disassembly, cleaning and maintenance operations are performed 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 arc beams arranged opposite to each other. In the straight beam layer, two external building machine assemblies numbered W5 and W10 are installed on the straight beams through the attached plate brackets. The attached plate brackets are arranged in an umbrella-like form with a large outside and a small inside. The attached plate brackets are reinforced and connected by multiple retractable tie rods; the external building machine assembly is installed at the end of the cantilevered end of the attached plate bracket; a diagonal brace tie piece is arranged between the external building machine assembly and the core tube; four top wall supports are installed on the side of the external building machine assembly close to the core tube. Legs, when the external building machine assembly climbs, at least one of the four top wall legs is supported 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 arranged on the two external building machine assemblies numbered W5 and W10, one end of the flap is hingedly mounted on the external building machine assembly, and the other end of the flap is connected to the external building machine assembly through a cable, and the length of the flap is adapted to the distance between the straightening 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 is characterized in that: The core tube has a total height of 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 is characterized in that: The wall thickness of the core tube is variable section, the wall thickness of the first and second floors is 1000mm, the wall thickness of the third to sixth floors is 800mm, the wall thickness of the seventh to thirteenth floors is 700mm, the wall thickness of the fourteenth to twenty-fourth floors is 600mm, the wall thickness of the twenty-fifth to thirty-fifth floors is 500mm, and the wall thickness of the thirty-sixth to forty-fifth floors is 400mm.

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 on the inner side of the two elliptical cylinder units. Six inner building machine assemblies numbered N11 to N16 are arranged in the eight elevator shafts of the elliptical cylinder unit on the north side; seven inner building machine assemblies numbered N17 to N23 are arranged in the eight elevator shafts of the elliptical cylinder unit on the south side; among them, there is an empty elevator shaft 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 is characterized by: In the step 2, the internal building machine assembly vertically covers four storeys; the top of the internal upper operating 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 is characterized in that: In the step 2, when the concrete in the elevator shaft where the inner building machine assembly is located reaches the demolding requirements, the formwork is withdrawn, and the upper wall reinforcement is tied with the help of the inner upper operating area. When the upper wall reinforcement is tied, the inner building machine assembly is climbed, and the inner building machine assembly drives the formwork in the elevator shaft to climb to the upper construction layer; before climbing, the steel bars and materials at the top of the inner upper operating area are lifted away, and they are stacked after climbing into place and inspection and acceptance are qualified.

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 is characterized by: In the step three, a cantilever frame is arranged on the inner side of the top of the outer frame, a manual hoist is arranged on the cantilever frame, and the outer side template of the core tube is hung on the manual hoist after being withdrawn; an operating platform is arranged on the top of the outer frame, and one end of the operating platform is cantilevered on the inner side of the outer frame; the bearing load of the outer upper operating area is 5kN / ㎡.

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 is characterized in that: The external building machine component is divided into four climbing conditions, namely, straight beam climbing to straight beam condition, straight beam climbing to curved beam condition, curved beam climbing to curved beam condition and curved beam climbing to straight beam condition. When there is a non-standard layer, it also has a non-standard layer climbing condition. Under different climbing conditions, the length of the top wall support leg is adjusted so that at least one top wall support leg is supported on the outer wall of the core tube.

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