CN115030322B - Dome steel structure integral lifting construction method - Google Patents
Dome steel structure integral lifting construction method Download PDFInfo
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- CN115030322B CN115030322B CN202210723990.6A CN202210723990A CN115030322B CN 115030322 B CN115030322 B CN 115030322B CN 202210723990 A CN202210723990 A CN 202210723990A CN 115030322 B CN115030322 B CN 115030322B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 53
- 239000010959 steel Substances 0.000 title claims abstract description 53
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
- E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3588—Extraordinary methods of construction, e.g. lift-slab, jack-block using special lifting or handling devices, e.g. gantries, overhead conveying rails
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the technical field of building construction, in particular to a dome steel structure integral lifting construction method; the method comprises the following steps: assembling a dome, arranging a lifting platform, installing a hydraulic lifting system, installing steel strands and a lifting appliance, trying to lift, standing, formally lifting, erecting an elliptical frame system, and placing the dome on the elliptical frame system. The phenomenon that the dome is deformed locally and even cracked caused by the fact that the hydraulic lifting system is suddenly loaded on the dome is avoided through a step-by-step loading mode, so that the success rate of dome lifting is increased, accidents are reduced, and efficiency is improved; standing for 2-24 hours, and measuring the deformation of the dome to ensure that the lifted dome meets the requirements; when the dome is lifted to a certain distance from the design height, each hydraulic lifter is independently controlled through the control system, so that the hydraulic lifters reach the design height and are positioned on the same horizontal plane, the deflection phenomenon of the dome is reduced, and the lifting precision of the dome is higher.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a dome steel structure integral lifting construction method.
Background
The dome is used as a large-span space structure, is generally ellipsoidal, is arranged above a main building wall body with an elliptical space in the middle, and is generally erected with an elliptical frame system between the dome and the main building wall body to be used as a support for the dome; the dome has the advantages of large internal space, good strength and stability, novel and attractive appearance and the like;
The span of the member is large in the construction process of the dome steel structure, the mode of building the dome on the top by using a scaffold, large-scale mechanical equipment and the like is large in investment, and the difficulty of high-altitude operation is high and the danger coefficient is large; meanwhile, the dome assembled on the ground is lifted by the hydraulic lifting system, and when the dome is lifted, the dome is easily loaded too high to deform, so that the success rate of lifting the dome is affected, and even accidents occur; after lifting to the design installation height, when dropping the dome onto the oval frame system, the dropping positions of the lifting points can be mutually influenced, so that the whole dome is easily deviated, and the lifting precision of the dome is influenced.
Disclosure of Invention
Aiming at the technical problems that in the prior art, the mode of constructing a dome at the top is high in operation difficulty and large in danger coefficient, the dome is easy to deform due to too high loading when being lifted by a hydraulic lifting system, and meanwhile, the lifting precision of the dome is influenced, the invention provides a dome steel structure integral lifting construction method.
In order to achieve the above purpose, the invention adopts the following technical scheme: the dome steel structure integral lifting construction method is characterized by comprising the following steps of:
assembling a dome, namely erecting a jig frame on the ground in an elliptical space in the middle of a main wall of a building, and assembling the dome on the jig frame;
Step two, arranging lifting platforms, setting up a plurality of main body steel beams which are balanced on the inner side of a jig frame on a main wall of a building, and arranging a group of lifting platforms above each selected main body steel beam;
step three, installing a hydraulic lifting system, wherein the hydraulic lifting system comprises a plurality of hydraulic lifters which are respectively arranged on a lifting platform one by one;
Step four, installing a steel strand and a lifting appliance; the lifting appliance is fixed at the position of the corresponding dome under each hydraulic lifter; the upper end of the steel strand is connected with a hydraulic lifter, and the lower end of the steel strand is fixedly connected with a lifting appliance right below the hydraulic lifter through a special anchorage device of the steel strand; sequentially connecting a plurality of steel strands between each hydraulic lifter and a lifting appliance right below the hydraulic lifter one by one;
Step five, lifting; setting the connection part of the dome and the lifting appliance as a lifting point; the hydraulic lifter is controlled by the hydraulic lifting system to lift the dome in a step-by-step loading mode, the load power for lifting the dome is kept to be lifted to a certain height just separated from the jig frame, and all lifting points on the dome are located on the same horizontal plane;
step six, standing; standing the dome lifted in the fifth step at a certain height of the jig for 2-24 hours; measuring the deformation of the dome and comparing the deformation with the theoretical deformation of the dome, if the deformation of the dome is smaller than the theoretical deformation, continuing the next step, if the deformation of the dome is larger than the theoretical deformation, removing the dome, and repeating the first step, the fourth step and the sixth step;
step seven, formally lifting; the hydraulic lifting system controls the hydraulic lifter to continuously lift the still dome in a step-by-step loading mode, and stops lifting after the hydraulic lifter is lifted to be close to the designed installation height of the dome; measuring the difference value of each lifting point from the designed installation height, and independently controlling each hydraulic lifter by the hydraulic lifting system to lift the hydraulic lifter to the designed installation height by Fang Diaodian, so that all the lifting points of the dome are positioned on the same horizontal plane;
step eight, setting up an elliptical frame system;
Step nine, placing a dome on an elliptical frame system;
step ten, the equipment used in the lifting process is removed.
Preferably, the assembling dome in the first step specifically includes: a plane control reference net is established above the ground in an elliptical space in the middle of a main wall of a building by using a total station, a plurality of plane control reference points are selected on the plane control reference net, vertical delivery is carried out to the ground, a jig frame is erected under the plane control reference net, and a dome is assembled on the jig frame through the plane control reference points which are vertically delivered.
Preferably, the lifting platform in the second step comprises an upright post, a platform beam, an inclined strut and a rear pull rod; the upright posts are vertically arranged, and the lower ends of the upright posts are fixedly connected above the main body steel beams; one end of the platform beam is vertically and fixedly connected with the upper end of the upright post, a through hole is formed in one end, far away from the upright post, of the platform beam from top to bottom, and the hydraulic lifter is arranged at the through hole on the platform beam; one end of the diagonal brace is fixedly connected with the lower end of the upright post, and the other end of the diagonal brace is fixedly connected with one end, far away from the upright post, of the platform beam; one end of the rear pull rod is fixedly connected with the upper end of the upright post, and the other end of the rear pull rod is fixedly connected with the main body steel beam of the main wall body of the building.
Preferably, the platform beam is further provided with a guide frame, and the guide frame is positioned at one side of the hydraulic lifter close to the upright post; the guide frame comprises a vertical rod, a guide plate and two guide posts; the vertical pole is vertically arranged, the lower end of the vertical pole is fixedly connected to the platform beam, the guide plate is horizontally and fixedly connected to the upper end of the vertical pole, the length direction of the guide plate is perpendicular to the length direction of the platform beam, and the two guide posts are vertically arranged on two sides of the length direction of the guide plate respectively.
Preferably, the hydraulic lifting system in the third step further comprises a hydraulic pump source system and a computer synchronous control system; the hydraulic lifters are connected with a hydraulic pump source system through hydraulic pipelines, and the hydraulic pump source system is in communication connection with a computer synchronous control system; the hydraulic lifter is fixed at the through hole above the platform beam through a fixing plate.
Preferably, the step-by-step loading mode specifically includes: the computer synchronous control system controls the hydraulic lifter to lift according to 20% of the designed load power by controlling the flow of the hydraulic pump source system, and the continuous process is 5-15 minutes; continuously lifting by 40% of the designed load power for 5-15 minutes; and (5) reciprocally cycling until the dome is lifted, and enabling the hydraulic lifter to reach the load power for lifting the dome.
Preferably, an anchor hole is formed in the middle of the lifting appliance, and the lower end of the steel strand penetrates through the anchor hole and is anchored with the lifting appliance through a special anchor device of the steel strand.
Preferably, in the fifth step, the dome is lifted to be 100-200mm away from the jig frame.
Preferably, in the seventh step, the dome is lifted to a distance of 500-1000mm from the design installation height.
Compared with the prior art, the invention has the advantages and positive effects that: (1) The phenomenon that the dome is deformed locally and even cracked caused by the fact that the hydraulic lifting system is suddenly loaded on the dome is avoided through a step-by-step loading mode, so that the success rate of dome lifting is increased, accidents are reduced, and efficiency is improved; (2) Standing for 2-24 hours, and measuring the deformation of the dome after standing to ensure that the lifted dome meets the requirements; (3) When the dome is lifted to a certain distance from the design height, the hydraulic lifters are controlled by the control system independently, so that the hydraulic lifters reach the design height and are positioned on the same horizontal plane, and when the hydraulic lifters fall, the hydraulic lifters do not fall onto an elliptical frame system at a certain lifting point, so that deflection occurs at other positions, and the lifting precision of the dome is higher.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced,
FIG. 1 is a top view of the dome of the present invention after installation;
FIG. 2 is a schematic view of the dome lifted onto the body steel beam;
FIG. 3 is a schematic view of dome lifting;
FIG. 4 is a schematic view of a lift platform;
FIG. 5 is a perspective view of a guide frame;
FIG. 6 is a perspective view of a hanger;
Fig. 7 is a top view of the spreader.
Reference numerals illustrate:
1-a main wall body of a building, 11-a main steel beam and 12-an elliptical frame system;
2-dome, 21-hanging point;
3-lifting the platform; 31-upright posts, 32-platform beams, 33-diagonal braces and 34-rear pull rods;
4-hydraulic lifter;
5-guide frames, 51-upright rods, 52-guide plates and 53-guide columns;
6-fixing plates;
7-steel strand wires;
8-lifting appliance and 81-anchor hole.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended drawings and examples.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
Examples
The invention is further described below with reference to fig. 1-7, and the construction method for integrally lifting the steel structure of the seed dome comprises the following steps:
firstly assembling a dome 2, erecting a jig frame on the ground in an elliptical space in the middle of a main wall body 1 of a building, using a total station to establish a plane control reference net above the ground in the elliptical space in the middle of the main wall body 1 of the building, selecting a plurality of plane control reference points on the plane control reference net, carrying out vertical delivery to the ground, erecting the jig frame under the plane control reference net, and assembling the dome 2 on the jig frame through the vertically delivered plane control reference points.
Step two, arranging lifting platforms 3, setting ten main body steel beams 11 which are balanced on the inner side of a jig frame on a main wall body 1 of a building, and arranging a group of lifting platforms 3 above each selected main body steel beam 11;
the lifting platform 3 comprises an upright post 31, a platform beam 32, a diagonal bracing 33 and a rear pull rod 34; the upright posts 31 are vertically arranged, and the lower ends of the upright posts are fixedly connected above the main body steel beam 11; one end of the platform beam 32 is vertically and fixedly connected with the upper end of the upright post 31, one end of the platform beam 32 far away from the upright post 31 is provided with a through hole from top to bottom, one end of the diagonal brace 33 is fixedly connected with the lower end of the upright post 31, and the other end of the diagonal brace 33 is fixedly connected with one end of the platform beam 32 far away from the upright post 31; one end of the rear pull rod 34 is fixedly connected with the upper end of the upright post 31, and the other end of the rear pull rod is fixedly connected with the main body steel beam 11 of the main building wall 1; the upright posts 31, the platform beams 32 and the diagonal braces 33 are all box-shaped beams, and the rear pull rods 34 are H-shaped beams;
The platform beam 32 is also provided with a guide frame 5, and the guide frame 5 is positioned at one side of the hydraulic lifter 41, which is close to the upright post 31; the guide frame 5 comprises a vertical rod 51, a guide plate 52 and two guide posts 53; the vertical rod 51 is vertically arranged, the lower end of the vertical rod is fixedly connected to the platform beam 32, the guide plate 52 is horizontally and fixedly connected to the upper end of the vertical rod 51, the length direction of the guide plate 52 is perpendicular to the length direction of the platform beam 32, and the two guide posts 53 are vertically arranged on two sides of the length direction of the guide plate 52.
Step three, installing a hydraulic lifting system, wherein the hydraulic lifting system comprises ten hydraulic lifters 4, a hydraulic pump source system and a computer synchronous control system; ten hydraulic lifters 4 are respectively arranged on the lifting platform 3 one by one; the hydraulic pump source system is internally provided with hydraulic pumps with the same number as the hydraulic lifters 4, and the hydraulic pumps are respectively connected with the hydraulic lifters 4 one by one through hydraulic pipelines, and can independently control any hydraulic lifter 4by controlling the flow of each hydraulic pump; the hydraulic pump source system is in communication connection with the computer synchronous control system; the hydraulic lifter 4 is fixed at the through hole above the platform beam 32 through the fixing plate 6; the fixed plate 6 is L-shaped steel plate, and the minor face of L-shaped steel plate presses on the connecting plate of hydraulic lifter 4 bottom, and the long limit is fixed on platform roof beam 32, and fixed plate 6 has four, and balanced arranging is closely around hydraulic lifter 4.
Step four, installing a steel strand 7 and a lifting appliance 8; a lifting appliance 8 is fixed at a position right below each hydraulic lifter 41 corresponding to the dome 2, and an anchor hole 81 is arranged in the middle of the lifting appliance 8; the upper end of the steel strand 7 is connected with the hydraulic lifter 4, and the lower end passes through the anchor hole 81 and is anchored with the lifting appliance 8 under the hydraulic lifter 4 through a special anchor of the steel strand 7. Ten steel strands 7 are sequentially connected between each hydraulic lifter 4 and a lifting appliance 8 right below the hydraulic lifter one by one;
The upper end of the steel strand 7 passes through the hydraulic lifter 4 and is led to one side through the guide frame 5, the steel strand 7 is a high-strength low-relaxation prestress steel strand, the tensile strength is 1860MPa, the single diameter is 17.80mm, and the breaking force is not less than 36t.
Step five, lifting; setting the connection part of the dome 2 and the lifting appliance 8 as a lifting point 21; the hydraulic lifter 4 is controlled by the hydraulic lifting system to lift the dome 2 in a step-by-step loading mode, the load power for lifting the dome 2 is kept to be lifted to a height of 100mm just away from the jig frame, and all lifting points 21 on the dome 2 are positioned on the same horizontal plane;
the step-by-step loading mode is specifically as follows: the computer synchronous control system controls the hydraulic lifter 4 to lift according to 20% of the designed load power by controlling the flow of the hydraulic pump source system, and the continuous process is 10 minutes; continuing to increase the load power by 40% of the design load power for 10 minutes; the reciprocating cycle is carried out until the dome 2 is lifted, and the hydraulic lifter 4 reaches the load power for lifting the dome 2.
Step six, standing; standing the dome 2 lifted in the fifth step at a certain height of the jig for 2-24 hours; the dome 2 should be kept stand for enough time in winter to meet the deformation requirement in summer, and the standing time in summer can be shortened; and (3) measuring the deformation of the dome 2 and comparing with the theoretical deformation of the dome 2, if the deformation of the dome 2 is smaller than the theoretical deformation, continuing the next step, and if the deformation of the dome 2 is larger than the theoretical deformation, removing the dome 2, and repeating the first step, the fourth step and the sixth step.
Step seven, formally lifting; the hydraulic lifting system controls the hydraulic lifter 4 to continuously lift the still dome 2 in a step-by-step loading mode, and lift the dome 2 to a position 1000mm away from the designed installation height of the dome 2, and stops lifting; the difference between each lifting point 21 and the design installation height is measured, and the hydraulic lifting system independently controls each hydraulic lifter 4 to lift the lifting point 21 right below the hydraulic lifter to the design installation height, so that all the lifting points 21 of the dome 2 are positioned on the same horizontal plane.
Step eight establishes an elliptical framing system 12.
Step nine, placing the dome 2 on the elliptical frame system 12; the dome 2 is placed on the oval frame system 12 in a stepwise unloading manner: the computer synchronous control system controls the hydraulic lifter 4 to be firstly reduced to 80% of the load power by controlling the flow of the hydraulic pump source system, and the duration is 10 minutes; continuing to reduce to 60% of the load power for 10 minutes; until the strands 7 relax, the load is transferred entirely to the oval frame system 12.
Step ten, dismantling equipment used in the lifting process; comprises a lifting platform 3, a guide frame 5, a hydraulic lifting system, steel strands 7, a lifting appliance 8, a fixed plate 6 and the like.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification and equivalent changes to the above-mentioned embodiments according to the technical substance of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (5)
1. The dome steel structure integral lifting construction method is characterized by comprising the following steps of:
Assembling a dome (2), namely erecting a jig frame on the ground in an elliptical space in the middle of a main wall body (1) of a building, and assembling the dome (2) on the jig frame;
Step two, arranging lifting platforms (3), erecting a plurality of main body steel beams (11) which are balanced on the inner side of a jig frame on a main wall body (1) of the building, and arranging a group of lifting platforms (3) above each selected main body steel beam (11);
Step three, installing a hydraulic lifting system, wherein the hydraulic lifting system comprises a plurality of hydraulic lifters (4), and the hydraulic lifters (4) are respectively arranged on the lifting platform (3) one by one;
Step four, installing a steel strand (7) and a lifting appliance (8); a lifting appliance (8) is fixed at the position of the corresponding dome (2) under each hydraulic lifter (4); the upper end of the steel strand (7) is connected with the hydraulic lifter (4), and the lower end of the steel strand is fixedly connected with a lifting appliance (8) right below the hydraulic lifter (4) through a special anchorage device of the steel strand (7); sequentially connecting a plurality of steel strands (7) between each hydraulic lifter (4) and a lifting appliance (8) right below the hydraulic lifter one by one;
Step five, lifting; setting the connection part of the dome (2) and the lifting appliance (8) as a lifting point (21); the hydraulic lifter (4) is controlled by the hydraulic lifting system to lift the dome (2) in a step-by-step loading mode, the load power for lifting the dome (2) is kept to be lifted to a certain height just separated from the jig frame, and all lifting points (21) on the dome (2) are located on the same horizontal plane;
Step six, standing; standing the dome (2) lifted in the fifth step at a certain height of the jig for 2-24 hours; comparing the deformation of the dome (2) with the theoretical deformation of the dome (2), if the deformation of the dome (2) is smaller than the theoretical deformation, continuing the next step, and if the deformation of the dome (2) is larger than the theoretical deformation, dismantling the dome (2), and repeating the first step, the fourth step and the sixth step;
step seven, formally lifting; the hydraulic lifting system controls the hydraulic lifter (4) to continuously lift the still dome (2) in a step-by-step loading mode, and stops lifting after the still dome (2) is lifted to be close to the designed installation height of the dome (2); measuring the difference value of each lifting point (21) from the designed installation height, and independently controlling each hydraulic lifter (4) by the hydraulic lifting system to lift the lifting point (21) right below the hydraulic lifter to the designed installation height, so that all the lifting points (21) of the dome (2) are positioned on the same horizontal plane;
Step eight, building an elliptical frame system (12);
Step nine, placing a dome (2) on the elliptical frame system (12);
Step ten, dismantling equipment used in the lifting process;
The dome (2) assembled in the first step is specifically: a total station is used for establishing a plane control reference network above the ground in an elliptical space in the middle of a main wall body (1) of the building, a plurality of plane control reference points are selected on the plane control reference network, vertical delivery is carried out to the ground, a jig frame is erected under the plane control reference network, and a dome (2) is assembled on the jig frame through the vertically delivered plane control reference points;
The lifting platform (3) in the second step comprises an upright post (31), a platform beam (32), a diagonal bracing (33) and a rear pull rod (34);
The upright posts (31) are vertically arranged, and the lower ends of the upright posts are fixedly connected above the main body steel beams (11); one end of the platform beam (32) is vertically and fixedly connected with the upper end of the upright post (31), a through hole is formed in one end, far away from the upright post (31), of the platform beam (32), and the hydraulic lifter (4) is arranged at the through hole on the platform beam (32); one end of the diagonal brace (33) is fixedly connected with the lower end of the upright post (31), and the other end of the diagonal brace is fixedly connected with one end, far away from the upright post (31), of the platform beam (32); one end of the rear pull rod (34) is fixedly connected with the upper end of the upright post (31), and the other end of the rear pull rod is fixedly connected with the main body steel beam (11) of the main building wall body (1);
The hydraulic lifting system in the third step further comprises a hydraulic pump source system and a computer synchronous control system; the hydraulic lifters (4) are connected with a hydraulic pump source system through hydraulic pipelines, and the hydraulic pump source system is in communication connection with a computer synchronous control system;
The hydraulic lifter (4) is fixed at a through hole above the platform beam (32) through a fixing plate (6);
The step-by-step loading mode specifically comprises the following steps: the computer synchronous control system controls the hydraulic lifter (4) to lift according to 20% of the designed load power for 5-15 minutes by controlling the flow of the hydraulic pump source system; continuously lifting by 40% of the designed load power for 5-15 minutes; and (3) reciprocating the hydraulic lifter (4) until the dome (2) is lifted, and the hydraulic lifter (4) reaches the load power for lifting the dome (2).
2. The dome steel structure integral lifting construction method according to claim 1, wherein a guide frame (5) is further arranged on the platform beam (32), and the guide frame (5) is positioned on one side, close to the upright post (31), of the hydraulic lifter (4);
The guide frame (5) comprises a vertical rod (51), a guide plate (52) and two guide posts (53); the vertical rod (51) is vertically arranged, the lower end of the vertical rod is fixedly connected to the platform beam (32), the guide plate (52) is horizontally and fixedly connected to the upper end of the vertical rod (51), the length direction of the guide plate (52) is perpendicular to the length direction of the platform beam (32), and the two guide posts (53) are vertically arranged on two sides of the length direction of the guide plate (52) respectively.
3. The dome steel structure integral lifting construction method according to claim 1, wherein an anchor hole (81) is formed in the middle of the lifting appliance (8), and the lower end of the steel strand (7) penetrates through the anchor hole (81) and is anchored with the lifting appliance (8) through a special anchor of the steel strand (7).
4. The method for integrally lifting and constructing the dome steel structure according to claim 1, wherein in the fifth step, the dome (2) is lifted to be 100-200mm away from the jig frame.
5. The method for integrally lifting and constructing the dome steel structure according to claim 1, wherein the dome (2) is lifted to be 500-1000mm away from the designed installation height in the seventh step.
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| CN202210723990.6A CN115030322B (en) | 2022-06-24 | 2022-06-24 | Dome steel structure integral lifting construction method |
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| CN202210723990.6A CN115030322B (en) | 2022-06-24 | 2022-06-24 | Dome steel structure integral lifting construction method |
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| CN115030322B true CN115030322B (en) | 2024-06-07 |
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