Construction method of outer protective screen system for spindle-shaped structure

Abstract

The invention discloses a construction method of an outer protective screen system for a spindle-shaped structure. The construction method comprises the following steps that S1, a straight climbing area, a side inclined climbing area and a pitching climbing area are divided; s2, an arc line section changing in a spindle shape in the height direction is approximate to an arc; s3, converting an included angle alpha and an inclination angle according to the external expansion or retraction distance of the outer edge of each layer of structure; s4, determining the width of a single-chip adjustment small unit; s5, assembling the ground; s6, each unit of the outer protection screen is installed; s7, all the protection screens climb upwards in sequence through a hydraulic climbing system; s8, increasing or reducing the whole cross beam platform; and S9, climbing is continued. The side inclined climbing unit and the pitching climbing unit are adopted and matched with the common protection screen straight climbing unit, the problem that the outer vertical face of a spindle type outer vertical face super high-rise structure is closed is solved, the outer protection screen can be kept continuous and complete all the time in the whole structure construction period by increasing or decreasing the adjusting units, frequent high-altitude mounting and dismounting operation is avoided, and the construction efficiency is improved. The construction progress is accelerated and the labor cost is saved.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a construction method of an external protective screen system for a spindle-type structure. Background Art

[0002] The hydraulic external protection screen system has been widely used in the construction of super-high-rise concrete structures at home and abroad. All its parts are connected by bolts, and it has the characteristics of simple installation and disassembly, convenient and fast jacking, and high safety and reliability.

[0003] However, the conventional hydraulic external protection screen system only includes straight climbing units, and the positions of the brackets between the upper and lower floors need to correspond one to one, the guide rails are always perpendicular to the plane of the brackets, and the working platform is always perpendicular to the plane of the guide rails. For spindle-shaped facade concrete super-high-rise structures, due to the structural characteristics that the outer edge of the structural floor expands outward first and then retracts inward, traditional straight climbing units have problems such as being unable to climb and the gaps between climbing units cannot be effectively closed.

[0004] If the traditional steel cantilever external scaffolding is used, there will inevitably be a large number of high-altitude installation and dismantling operations, which will waste a lot of labor and also pose a major safety hazard, which needs to be improved. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a construction method for an external protective screen system for a spindle-type structure, which solves the problem of sealing the facade of the spindle-type facade concrete structure during construction.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A construction method for an external protective screen system for a spindle-shaped structure, comprising the following steps: S1, divide the floor plan of the spindle-shaped facade structure into straight climbing area, side inclined climbing area and pitch climbing area according to the characteristics of the facade changes; S2, the arc segment with spindle-shaped change along the height direction is approximated as a circular arc, and the circular arc segment is divided into several small segments according to a certain angle, which are used to locate the floor mounting system and the special mounting. Every two mountings form a group, corresponding to a protective screen unit, and the mounting direction is approximately arranged along the radial direction; S3, according to the expansion or indentation distance of the outer edge of each layer structure, the included angle α between the guide rail of the side climbing unit and the rectangular tube beam, and the inclination angle between the guide rail of the pitch climbing unit and the structural floor in the vertical plane are converted; S4, determining the width of the single-piece small adjustment unit by combining the angle β of the side climbing unit of the adjustment unit in the floor plane, the inclination angle α of the side climbing unit and other information; S5, assemble the ordinary protective screen straight climbing unit, side climbing unit, pitch climbing unit and adjustment unit on the ground, embed the floor mounting system and special mounting in the floor, and make special wooden wedges according to the angle α between the guide rail of the side climbing unit and the rectangular tube beam; S6, pour concrete for at least three floors of floor slabs. When each unit of the external protective screen is installed for the first time, the guide rails are inserted into the floor bracket system or special brackets of each floor from top to bottom by using a tower crane to lift the whole unit and manually assist. The gaps between the protective screen and the floor slab and the gaps between the protective screens are closed by flaps; S7, climb each protective screen upward in sequence through the hydraulic climbing system. Since there is an overlap between the adjustment unit and the adjacent side inclined climbing unit, the corresponding units need to be climbed alternately in sequence, and the climbing height each time is not greater than the clear distance between the rectangular tube enclosure uprights of the adjustment unit and the rectangular tube crossbeams of the side inclined climbing unit; S8, after the climbing is completed, the overall crossbeam platform is increased or decreased according to the gap between the adjustment unit and the adjacent side inclined climbing unit; S9, continue climbing until the main concrete structure construction is completed.

[0007] In a preferred example, the present invention can be further configured as follows: the tripod secondary platform and the tripod main platform on the side inclined climbing unit are connected to the rectangular tube beam by bolts to form a rotatable hinge node, and the two adjacent layers of rectangular tube beams and the two guide rails form a parallelogram in the climbing facade, ensuring that the rectangular tube beam and the working platform thereon always remain level during the entire climbing process.

[0008] In a preferred example, the present invention can be further configured as follows: the pitch and climb unit is cut through the limit plate in the special mount so that the guide rail can rotate freely forward and backward within a certain range in the mount, and cooperates with the hydraulic jacking system to achieve pitch or rise climbing of the unit.

[0009] In a preferred example, the present invention can be further configured as follows: for a spindle-shaped facade concrete super-high-rise structure, the gap between the straight climbing unit and the side inclined climbing unit first expands and then decreases with the number of floors. In order to ensure the continuity and integrity of the facade closure, an adjustment unit is used between the straight climbing unit and the side inclined climbing unit. The beam on the adjustment unit is composed of a plurality of shorter integral beam platforms. The integral beam platform is connected to the guide rail through an L-shaped main platform. Two protective vertical poles and two protective horizontal poles are installed on each integral beam platform for fixing the color steel plate enclosure. The length of the protective horizontal pole is the same as that of the corresponding integral beam platform. The integral beam platforms are connected by bolts.

[0010] In a preferred example, the present invention can be further configured as follows: in step S2, the arc segment is divided into several small segments, and the arc segment is replaced by a straight line segment to avoid excessive gap between the protective screen and the structural floor, and the division angle is not greater than 10°.

[0011] In a preferred example, the present invention can be further configured as follows: in step S2, according to the spindle-shaped change characteristics, the protective screen unit at the end of the arc segment can only tilt and climb in the vertical plane without horizontal displacement, which is a pitch climbing unit, and the remaining units are all side-inclined climbing units, and the side-inclined climbing units are connected to the adjacent straight climbing areas by adjustment units.

[0012] In a preferred example, the present invention can be further configured as follows: the N-th layer side inclined climbing inclination angle α in step S3 can be calculated according to the following formula: α=arctan(h / S2cosγ), wherein h is the layer height of the N-th layer, S2 is the absolute value of the interlayer displacement of the outer edge of the N+1-th layer structure at the calculated protective screen mount relative to the outer edge of the N-th layer structure, the angle γ is directly related to the division angle of the calculated protective screen mount in step S2, and is a fixed value, S2cosγ is essentially the normal component of the interlayer displacement S2 at the calculated protective screen mount, and the absolute value of α during a single climbing process is not less than 80°.

[0013] In a preferred example, the present invention can be further configured as follows: the pitch climbing inclination angle α' of the Nth layer in step S3 can be calculated according to the following formula: α'=arctan(h / S1), where S1 is the absolute value of the inter-layer displacement of the outer edge of the N+1th layer structure at the end position of the arc segment relative to the outer edge of the Nth layer structure, and the absolute value of α' during a single climbing process is not less than 80°.

[0014] In a preferred example, the present invention can be further configured as follows: in step S4, during the climbing process of the adjustment unit, the overlapping relationship between the integral beam platforms at different floor heights and the adjacent side inclined climbing units is different. For example, the adjustment small unit on the Nth floor is not in contact with the lowermost platform of the side inclined climbing unit, but the adjustment small unit on the N+3th floor may have been overlapped and connected with the uppermost platform of the side inclined climbing unit. During the climbing process of the adjustment unit, the adjustment small unit needs to be continuously dismantled or reinstalled according to actual conditions to avoid collision with the external protective system of the side inclined climbing unit. To avoid too frequent installation and dismantling operations, the maximum length d of a single adjustment small unit can be calculated according to the following formula: d=nhcotαcosβ, where n represents the removal or installation of the outermost integral beam platform of the adjacent adjustment unit after the side inclined climbing unit has climbed n times. Considering the limited manual handling capacity, the maximum width d is less than 2m.

[0015] To sum up, the present invention has the following beneficial effects: by adopting external protective screen climbing units such as side inclined climbing units and pitch climbing units, in cooperation with ordinary protective screen straight climbing units, the difficult problem of closing the facade of super-high-rise structures with spindle-shaped facades is overcome, and at the same time, by increasing and decreasing adjustment units, the external protective screen can always remain continuous and complete during the entire structural construction period. Compared with traditional cantilevered external scaffolding, frequent high-altitude installation and dismantling operations are avoided. On the premise of ensuring safety, the construction progress is accelerated and labor costs are effectively saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of the domestic and foreign protective screen system and construction method in the example of the present invention; Figure 2 This is a schematic diagram of arc segment division in an example of the present invention; Figure 3 This is a vertical view of the side inclined climbing unit of the inner and outer protective screen in the example of the present invention; Figure 4 It is a schematic diagram of the side inclined climbing unit bracket and wooden wedge of the internal and external protective screen in the example of the present invention; Figure 5 It is a three-dimensional detailed diagram of the side oblique climbing unit of the inner and outer protective screen in the example of the present invention; Figure 6 It is a schematic diagram of the side oblique climbing inclination angle of the side oblique climbing unit of the inner and outer protective screen in the example of the present invention; Figure 7 It is a detailed view of the mounting bracket of the pitch and climb unit of the internal and external protection screen in the example of the present invention; Figure 8 This is a vertical view of the pitch and climb unit of the internal and external protection screen in the example of the present invention; Fig. 9 This is a vertical view of the internal and external protective screen adjustment unit in the example of the present invention; Fig.10 It is a three-dimensional detailed diagram of the integral crossbeam platform of the internal and external protection screen adjustment unit in the example of the present invention; Fig.11 It is a detailed diagram of the overlap between the inner and outer protection screen adjustment unit and the side inclined climbing unit in the example of the present invention; Fig.12 This is a plan view of the overlap between the internal and external protective screen adjustment unit and the side inclined climbing unit in an example of the present invention.

[0017] Figure numerals: 1-side inclined climbing unit, 101-floor mount system, 102-special wooden wedge, 103-tripod secondary platform, 104-tripod main platform, 105-rectangular tube beam, 106-bolts connecting the rectangular tube beam and the tripod, 107-L-type enclosure vertical pole, 108-U-bolts connecting the L-type enclosure vertical pole and the rectangular tube beam, 109-guide rail, 110-external protection system, 111-hydraulic jacking system; 201-special mount, 202-pitch climbing unit tripod secondary platform, 203-pitch climbing unit tripod main platform, 204-inclined Climbing unit rectangular tube working platform, 205-limiting plate inside the bracket; 3-combined adjustment unit, 301-L-shaped main platform of the adjustment unit, 302-connecting bolts between the main platform and the guide rail, 303-integral beam platform of the adjustment unit, 304-U-bolts connecting the integral beam platform and the L-shaped main platform, 305-rectangular tube enclosure vertical pole, 306-connecting bolts between the enclosure vertical pole and the integral beam platform, 307-rectangular tube enclosure horizontal pole, 308-U-bolts connecting the enclosure horizontal pole and the vertical pole, 309-connecting bolts between the integral beam platforms; 31-35-single-piece adjustment small unit. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0019] Referring to 1-12, a construction method of an external protective screen system for a spindle-shaped structure is applicable to a building with a super high-rise structure, the floor height of which is 3600mm. The outer edge of the building is divided into a straight line segment and an arc segment. The straight line segment remains unchanged along the height direction, and the arc segment changes in a spindle shape along the height direction, that is, it first expands outward and then retracts inward. During the change process, the arc segment always keeps the center of the circle moving in the same direction and the radius unchanged. The absolute value of the inter-layer displacement of the arc segment is 300mm. The method comprises the following steps: S1, divide the floor plan of the spindle-shaped facade structure into straight climbing area, side inclined climbing area and pitch climbing area according to the characteristics of the facade changes.

[0020] S2, approximate the arc segment that changes in a spindle shape along the height direction to a circular arc, and divide the circular arc segment into several small segments according to a certain angle, so as to be used for positioning the floor mounting system 101 and the special mounting 201, wherein every two mountings form a group, corresponding to a protective screen unit, and the mounting directions are arranged approximately along the radial direction.

[0021] S3, according to the expansion or retraction distance of the outer edge of each layer structure, the included angle α between the guide rail 109 of the side climbing unit 1 and the rectangular tube beam 105, and the inclination angle between the guide rail 109 of the pitch climbing unit and the structural floor in the vertical plane are converted.

[0022] S4, determining the width of the single-piece regulating small units 31-35 based on the angle β between the regulating unit 3 and the side inclined climbing unit 1 in the floor plane, the inclination angle α of the side inclined climbing unit 1 and other information.

[0023] S5, assemble the ordinary protective screen straight climbing unit, side climbing unit 1, pitch climbing unit and adjustment unit 3 on the ground, embed the floor mounting system 101 and special mounting 201 in the floor, and make special wooden wedges 102 according to the angle α between the guide rail 109 of the side climbing unit 1 and the rectangular tube beam 105.

[0024] S6, start by pouring concrete for at least three floors. When each unit of the external protective screen is installed for the first time, a tower crane is used to lift the entire unit and manually assist to insert the guide rail 109 from top to bottom into the floor mounting system 101 or the special mounting 201 of each floor, and the gap between the protective screen and the floor and the gap between the protective screens are closed by flaps.

[0025] S7, climb each protective screen upward in turn through the hydraulic climbing system 111. Since there is an overlap between the adjustment unit 3 and the adjacent side inclined climbing unit 1, the corresponding units need to climb alternately in turn, and the climbing height each time is not greater than the net distance between the rectangular tube enclosure uprights 305 of the adjustment unit 3 and the rectangular tube crossbeams 105 of the side inclined climbing unit 1.

[0026] S8, after the climbing is completed, increase or decrease the overall beam platform 303 according to the gap between the adjustment unit 3 and the adjacent side inclined climbing unit 1.

[0027] S9, continue climbing until the main concrete structure construction is completed.

[0028] The tripod secondary platform 103 and the tripod main platform 104 on the side inclined climbing unit 1 are connected to the rectangular tube beam 105 by bolts 106 to form a rotatable hinge node. The two adjacent layers of rectangular tube beams 105 and the two guide rails 109 form a parallelogram in the climbing facade, ensuring that the rectangular tube beams 105 and the working platform thereon always remain level during the entire climbing process.

[0029] The pitch climbing unit cuts the limit plate 205 in the special mount 201 so that the guide rail 109 can rotate freely forward and backward within a certain range in the mount, and cooperates with the hydraulic jacking system 111 to achieve pitch climbing or tilt climbing of the unit.

[0030] For the spindle-shaped facade concrete super-high-rise structure, the gap between the straight climbing unit and the side inclined climbing unit 1 first expands and then decreases with the number of floors. In order to ensure the continuity and integrity of the facade closure, an adjustment unit 3 is used between the straight climbing unit and the side inclined climbing unit 1. The beam on the adjustment unit 3 is composed of a plurality of shorter integral beam platforms 303. The integral beam platform 303 is connected to the guide rail 109 through an L-shaped main platform 301. Each integral beam platform 303 is installed with two enclosure vertical poles 305 and two enclosure horizontal poles 307 for fixing the color steel plate enclosure. The length of the enclosure horizontal pole 307 is the same as that of the corresponding integral beam platform 303. The integral beam platforms 303 are connected with bolts 309.

[0031] In step S2, the arc segment is divided into several small segments, and the arc segment is replaced by a straight line segment to avoid too large a gap between the protective screen and the structural floor, and the division angle is not greater than 10°.

[0032] In step S2, according to the spindle-shaped change characteristics, the protective screen unit at the end of the arc segment can only climb tilted in the vertical plane without horizontal displacement, which is a pitch climbing unit. The remaining units are all side climbing units 1, and the side climbing unit 1 is connected to the adjacent straight climbing area by an adjustment unit 3.

[0033] The N-th layer side inclined climbing inclination angle α in step S3 can be calculated according to the following formula: α=arctanh / S2cosγ, where h is the height of the N-th layer, S2 is the absolute value of the inter-layer displacement of the outer edge of the N+1-th layer structure at the calculation of the protective screen mount relative to the outer edge of the N-th layer structure, and the angle γ is directly related to the division angle of the calculation of the protective screen mount in step S2, which is a fixed value. S2cosγ is essentially the normal component of the inter-layer displacement S2 at the calculation of the protective screen mount. The absolute value of α during a single climbing process is not less than 80°.

[0034] The pitch climbing inclination angle α' of the Nth layer in step S3 can be calculated according to the following formula: α'=arctanh / S1, where S1 is the absolute value of the inter-layer displacement of the outer edge of the N+1th layer structure at the end position of the arc segment relative to the outer edge of the Nth layer structure. The absolute value of α' during a single climbing process is not less than 80°.

[0035] During the climbing process of the adjustment unit 3 in step S4, the overlapping relationship between the integral beam platform 303 of different floor heights and the adjacent side inclined climbing unit 1 is different. For example, the adjustment unit 32 on the Nth floor is not in contact with the lowest platform of the side inclined climbing unit 1, but the adjustment unit 32 on the N+3th floor may have been overlapped and connected with the uppermost platform of the side inclined climbing unit 1. During the climbing process of the adjustment unit 3, the adjustment units 31-35 need to be continuously dismantled or reinstalled according to actual conditions to avoid collision with the external protective system 110 of the side inclined climbing unit 1. To avoid too frequent installation and dismantling operations, the maximum length d of a single adjustment unit 31-35 can be calculated according to the following formula: d=nhcotαcosβ, where n represents the removal or installation of the outermost integral beam platform 303 of the adjacent adjustment unit 3 after the side inclined climbing unit 1 has climbed n times. Considering the limited manual handling capacity, the maximum width d is less than 2m.

[0036] According to the above formula: In step S2, the arc segment is divided into several small segments at intervals of 10° for arranging mounts. The mounts are arranged radially (the angle γ is 5°, 15°, 25°, ...). Except for the two special mounts at the end, the rest are ordinary mounts and special wooden wedges.

[0037] In step S3, the angle α between the side climbing unit guide rail and the rectangular tube beam and the inclination angle α'=85° between the pitch climbing unit guide rail and the structural floor in the vertical plane are converted according to the expansion or indentation distance S1=S2=300mm of the outer edge of each layer of the structure. For the side climbing unit adjacent to the straight climbing area, the angle γ=5°, and α=85° is obtained.

[0038] In step S3, based on the information such as the angle β=15° between the adjustment unit and the side inclined climbing unit in the floor plane and the corresponding side inclined climbing unit inclination angle α=85°, and taking into account the removal or installation of an integral beam platform after every 6 climbs, it is determined that the maximum width of the single integral beam platform of the adjustment unit is 1825mm, and the actual width is 1700mm.

[0039] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A construction method for an external protective screen system for a spindle-shaped structure, characterized in that: The steps include: S1, divide the floor plan of the spindle-shaped facade structure into straight climbing area, side inclined climbing area and pitch climbing area according to the characteristics of the facade changes; S2, approximating the arc segment that changes in a spindle shape along the height direction to a circular arc, and dividing the circular arc segment into a plurality of small segments according to a certain angle, so as to be used for positioning the floor mounting system (101) and the special mounting (201), wherein every two mountings form a group, corresponding to a protective screen unit, and the mounting directions are arranged approximately along the radial direction; S3, converting the included angle α between the guide rail (109) of the side climbing unit (1) and the rectangular tube beam (105) and the inclination angle between the guide rail (109) of the pitch climbing unit and the structural floor in the vertical plane according to the outward expansion or indentation distance of the outer edge of each layer structure; S4, determining the width of the single-piece small adjustment unit (31-35) by combining information such as the angle β between the adjustment unit (3) and the side climbing unit (1) in the floor plane, the inclination angle α of the side climbing unit (1), etc.; S5, assembling a common protective screen straight climbing unit, a side-slanting climbing unit (1), a pitch climbing unit and an adjustment unit (3) on the ground, pre-embedding a floor mounting system (101) and a special mounting (201) in the floor, and manufacturing a special wooden wedge (102) according to the angle α between the guide rail (109) of the side-slanting climbing unit (1) and the rectangular tube crossbeam (105); S6, pouring concrete for at least three floors of floor slabs, when each unit of the external protective screen is first installed, the guide rail (109) is inserted from top to bottom into the floor mounting bracket system (101) or the special mounting bracket (201) of each floor by using a tower crane to lift the whole unit and manually assist, and the gap between the protective screen and the floor slab and the gap between the protective screens are closed by flaps; S7, climbing each protective screen upward in sequence through the hydraulic climbing system (111). Since there is an overlap between the adjustment unit (3) and the adjacent side inclined climbing unit (1), the corresponding units need to be climbed alternately in sequence, and the climbing height each time is not greater than the clear distance between the rectangular tube enclosure uprights (305) of the adjustment unit (3) and the rectangular tube crossbeams (105) of the side inclined climbing unit (1); S8, after the climbing is completed, the overall crossbeam platform (303) is increased or decreased according to the gap between the adjustment unit (3) and the adjacent side inclined climbing unit (1); S9, continue climbing until the main concrete structure construction is completed.

2. The construction method of the spindle-shaped structure external protection screen system according to claim 1, characterized in that: The tripod secondary platform (103) and the tripod main platform (104) on the side inclined climbing unit (1) are connected to the rectangular tube cross beam (105) by bolts (106) to form a rotatable hinge node, and two adjacent layers of rectangular tube cross beams (105) and two guide rails (109) form a parallelogram in the climbing facade, ensuring that the rectangular tube cross beam (105) and the working platform thereon always remain horizontal during the entire climbing process.

3. The construction method of the external protective screen system for a spindle-shaped structure according to claim 1, characterized in that: The pitch climbing unit is configured such that the guide rail (109) can freely rotate forward and backward within a certain range in the mounting seat by cutting the limit plate (205) in the special mounting seat (201), and the pitch climbing or the upward climbing of the unit can be realized by cooperating with the hydraulic jacking system (111).

4. The construction method of the external protective screen system for a spindle-shaped structure according to claim 1, characterized in that: For a spindle-shaped external facade concrete super-high-rise structure, the gap between the straight climbing unit and the side inclined climbing unit (1) first increases and then decreases with the number of floors. In order to ensure the continuity and integrity of the external facade closure, an adjustment unit (3) is used between the straight climbing unit and the side inclined climbing unit (1). The crossbeam on the adjustment unit (3) is composed of a plurality of shorter integral crossbeam platforms (303). The integral crossbeam platform (303) is connected to the guide rail (109) through an L-shaped main platform (301). Two enclosure vertical poles (305) and two enclosure horizontal poles (307) are installed on each integral crossbeam platform (303) for fixing the color steel plate enclosure. The length of the enclosure horizontal pole (307) is the same as that of the corresponding integral crossbeam platform (303). Bolts (309) are used to connect the integral crossbeam platforms (303).

5. The construction method of the spindle-shaped structure external protection screen system according to claim 1, characterized in that: In step S2, the arc segment is divided into several small segments, and the arc segment is replaced by a straight line segment to avoid too large a gap between the protective screen and the structural floor, and the division angle is not greater than 10°.

6. The construction method of the external protective screen system for a spindle-shaped structure according to claim 1, characterized in that: In step S2, according to the spindle-shaped variation characteristics, the protective screen unit at the end of the arc segment can only climb in an inclined manner in a vertical plane without horizontal displacement, and is a pitch climbing unit. The remaining units are all side-slant climbing units (1). The side-slant climbing unit (1) is connected to the adjacent straight climbing area by an adjustment unit (3).

7. The construction method of the external protective screen system for a spindle-shaped structure according to claim 1, characterized in that: The N-th layer side inclined climbing inclination angle α in step S3 can be calculated according to the following formula: α=arctan(h / S2cosγ), where h is the height of the N-th layer, S2 is the absolute value of the inter-layer displacement of the outer edge of the N+1-th layer structure at the calculation of the protective screen mount relative to the outer edge of the N-th layer structure, the angle γ is directly related to the division angle of the calculation of the protective screen mount in step S2, and is a fixed value. S2cosγ is essentially the normal component of the inter-layer displacement S2 at the calculation of the protective screen mount. The absolute value of α during a single climbing process is not less than 80°.

8. The construction method of the spindle-shaped structure external protection screen system according to claim 1, characterized in that: The pitch climbing inclination angle α' of the Nth layer in step S3 can be calculated according to the following formula: α'=arctan(h / S1), where S1 is the absolute value of the inter-layer displacement of the outer edge of the N+1th layer structure at the end position of the arc segment relative to the outer edge of the Nth layer structure. The absolute value of α' during a single climbing process is not less than 80°.

9. The construction method of the external protective screen system for a spindle-shaped structure according to claim 1, characterized in that: In step S4, during the climbing process of the adjustment unit (3), the overlapping relationship between the integral beam platform (303) of different floor heights and the adjacent side inclined climbing unit (1) is different. For example, the adjustment small unit (32) on the Nth floor is not in contact with the bottom platform of the side inclined climbing unit (1), but the adjustment small unit (32) on the N+3th floor may be overlapped and connected with the top platform of the side inclined climbing unit (1). During the climbing process of the adjustment unit (3), the adjustment small units (31-35) need to be continuously removed or reinstalled according to actual conditions to avoid collision with the external protection system (110) of the side inclined climbing unit (1). In order to avoid too frequent installation and removal operations, the maximum length d of a single adjustment small unit (31-35) can be calculated by the following formula: d=nhcotαcosβ, where n represents the removal or installation of the outermost integral beam platform (303) of the adjacent adjustment unit (3) after the side inclined climbing unit (1) climbs n times. Considering the limited manual handling capacity, the maximum width d is less than 2m.

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