CN115030322A - Integral lifting construction method for dome steel structure - Google Patents
Integral lifting construction method for dome steel structure Download PDFInfo
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- CN115030322A CN115030322A CN202210723990.6A CN202210723990A CN115030322A CN 115030322 A CN115030322 A CN 115030322A CN 202210723990 A CN202210723990 A CN 202210723990A CN 115030322 A CN115030322 A CN 115030322A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 238000010924 continuous production Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 3
- 230000008092 positive effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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
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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
- 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 construction method for integrally lifting a dome steel structure; the method comprises the following steps: assembling a dome, arranging a lifting platform, installing a hydraulic lifting system, installing a steel strand and a lifting appliance, trying to lift, standing, formally lifting, erecting an oval frame system, and placing the dome on the oval frame system. The dome is prevented from local deformation and even cracking caused by the sudden loading of the hydraulic lifting system on the dome in a step-by-step loading mode, the success rate of lifting the dome is increased, accidents are reduced, and the efficiency is improved; standing for 2-24 hours, measuring the deformation of the dome and ensuring that the lifted dome meets the requirements; when the dome is lifted to a certain distance away from the design height, each hydraulic lifter is independently controlled through the control system to enable the hydraulic lifters to reach the design height and be located on the same horizontal plane, the deflection phenomenon of the dome is reduced, and therefore 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 construction method for integrally lifting a dome steel structure.
Background
The dome is used as a large-span space structure, is generally in an ellipsoidal shape, is arranged above a main building wall body with an elliptical space in the middle, and an elliptical frame system is generally erected between the dome and the main building wall body to serve as a support of the dome; the dome has the advantages of large internal space, good strength and stability, novel and beautiful appearance and the like;
the dome steel structure construction process is large in component span, great investment is made in a mode of constructing the dome at the top by using scaffolds, large-scale mechanical equipment and the like, and high-altitude operation difficulty and high risk coefficient are achieved; meanwhile, the dome assembled on the ground is lifted by a hydraulic lifting system, and during lifting, the dome is easily deformed due to too high loading, the success rate of lifting the dome is influenced, and even accidents can happen; after the dome is lifted to the designed installation height, when the dome falls onto the oval frame system, the falling positions of the suspension points can be influenced mutually, so that the integral deviation of the dome is easily caused, and the lifting precision of the dome is influenced.
Disclosure of Invention
The invention provides a construction method for integrally lifting a dome steel structure, aiming at the technical problems that in the prior art, the operation difficulty is high, the risk coefficient is large, the dome is easy to deform due to high loading when a hydraulic lifting system is used for lifting, and the lifting precision of the dome is influenced.
In order to achieve the purpose, the invention adopts the technical scheme that: the integral lifting construction method of the dome steel structure is characterized by comprising the following steps:
assembling a dome, namely building a jig frame on the ground in an elliptical space in the middle of a main building wall body, and assembling the dome on the jig frame;
step two, a lifting platform is arranged, a plurality of main steel beams are selected in a balanced manner on the inner side of a building main wall body building jig frame, and a group of lifting platforms are arranged above each selected main steel beam;
mounting a hydraulic lifting system, wherein the hydraulic lifting system comprises a plurality of hydraulic lifters which are respectively mounted on a lifting platform one by one;
fourthly, installing a steel strand and a lifting appliance; a lifting appliance is fixed at a position corresponding to the dome under each hydraulic lifter; connecting the upper end of the steel strand with a hydraulic lifter, and fixedly connecting the lower end of the steel strand with a lifting appliance right below the hydraulic lifter through a special anchorage 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, trial promotion; setting the joint of the dome and the sling as a hoisting point; the hydraulic lifter is controlled by a 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 away from the jig frame, and each lifting point on the dome is located on the same horizontal plane;
standing; standing the dome lifted in the step five for 2-24 hours at a certain height of the jig frame; measuring the deformation of the dome, comparing the measured deformation with the theoretical deformation of the dome, continuing the next step if the deformation of the dome is smaller than the theoretical deformation, removing the dome if the deformation of the dome is larger than the theoretical deformation, 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 standing dome in a step-by-step loading mode, and stops lifting after the dome is lifted to a height close to the designed installation height of the dome; measuring the difference value of the distance between each lifting point and the designed installation height, and independently controlling each hydraulic lifter by a hydraulic lifting system to lift the lifting point right below the hydraulic lifter to the designed installation height so that all the lifting points of the dome are positioned on the same horizontal plane;
step eight, building an oval frame system;
step nine, placing the dome on the oval frame system;
and step ten, dismantling equipment used in the lifting process.
Preferably, the assembling dome in the first step is specifically as follows: the method comprises the steps of establishing a plane control reference network above the ground in an oval space in the middle of a main wall of a building by using a total station, selecting a plurality of plane control reference points on the plane control reference network, vertically delivering the plane control reference points to the ground, erecting a bed-jig below the plane control reference network, and assembling a dome on the bed-jig through the vertically delivered plane control reference points.
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 beam; 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 the end, away from the upright post, of the platform beam from top to bottom, and the hydraulic lifter is installed at the through hole on the platform beam; one end of the inclined strut is fixedly connected with the lower end of the upright post, and the other end of the inclined strut is fixedly connected with one end of the platform beam far away from the upright post; one end of the rear pull rod is fixedly connected with the upper end of the stand column, and the other end of the rear pull rod is fixedly connected with the main 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 on one side of the hydraulic lifter, which is close to the upright post; the guide frame comprises a vertical rod, a guide plate and two guide columns; the vertical setting of pole setting, and lower extreme fixed connection is on the platform roof beam, deflector horizontal fixed connection is in the pole setting upper end, just the length direction of deflector is perpendicular with the length direction of platform roof beam, two guide posts are vertical setting respectively in the length direction's of deflector both sides.
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 all 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 increasing by 40% of the designed load power, and keeping the process for 5-15 minutes; and (4) performing reciprocating circulation until the dome is lifted, and the hydraulic lifter reaches the load power for lifting the dome.
Preferably, the middle part of the lifting appliance is provided with an anchor hole, and the lower end of the steel strand penetrates through the anchor hole and is anchored with the lifting appliance through a special anchorage device of the steel strand.
Preferably, the dome is lifted to a distance of 200mm from the tire frame in the fifth step.
Preferably, the dome is lifted to a distance of 500-1000mm from the designed installation height in the seventh step.
Compared with the prior art, the invention has the advantages and positive effects that: (1) the dome is prevented from local deformation and even cracking caused by the sudden loading of the hydraulic lifting system on the dome in a step-by-step loading mode, the success rate of lifting the dome is increased, accidents are reduced, and the efficiency is improved; (2) standing for 2-24 hours, measuring the deformation of the dome after standing, and ensuring that the lifted dome meets the requirements; (3) when the dome is lifted to a certain distance away from the design height, the dome is lifted by adopting the first speed reduction, and each hydraulic lifter is independently controlled through the control system, so that the hydraulic lifters all reach the design height and are positioned on the same horizontal plane, and when the hydraulic lifters fall down, the lifting points cannot fall onto the oval frame system at first to cause the deviation of other positions, so that 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 used 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 a body steel beam;
FIG. 3 is a schematic view of the lifting of the dome;
FIG. 4 is a schematic view of a lift platform;
FIG. 5 is a perspective view of the guide frame;
FIG. 6 is a perspective view of the spreader;
fig. 7 is a top view of the spreader.
Description of reference numerals:
1-building main wall, 11-main body steel beam and 12-oval frame system;
2-dome, 21-hoisting point;
3-lifting the platform; 31-upright column, 32-platform beam, 33-inclined strut and 34-rear pull rod;
4-a hydraulic lifter;
5-a guide frame, 51-a vertical rod, 52-a guide plate and 53-a guide column;
6, fixing a plate;
7-steel strand wires;
8-lifting appliance, 81-anchor hole.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Examples
The invention is further explained by combining the attached drawings 1-7, and the integral lifting construction method of the dome steel structure comprises the following steps:
step one, assembling a dome 2, building a moulding bed on the ground in the elliptical space in the middle of the main building wall 1, building a plane control reference network above the ground in the elliptical space in the middle of the main building wall 1 by using a total station, selecting a plurality of plane control reference points on the plane control reference network, vertically delivering the plane control reference points to the ground, building the moulding bed under the plane control reference network, and assembling the dome 2 on the moulding bed through the vertically delivered plane control reference points.
Step two, a lifting platform 3 is arranged, ten main steel beams 11 are selected in a balanced manner on the inner side of a building main wall body 1 building jig, and a group of lifting platforms 3 are arranged above each selected main steel beam 11;
the lifting platform 3 comprises a column 31, a platform beam 32, a diagonal brace 33 and a rear pull rod 34; the upright column 31 is vertically arranged, and the lower end of the upright column is fixedly connected above the main steel beam 11; one end of the platform beam 32 is vertically and fixedly connected with the upper end of the upright column 31, a through hole is formed in one end, away from the upright column 31, of the platform beam 32 from top to bottom, one end of the inclined strut 33 is fixedly connected with the lower end of the upright column 31, and the other end of the inclined strut is fixedly connected with one end, away from the upright column 31, of the platform beam 32; one end of the rear pull rod 34 is fixedly connected with the upper end of the upright column 31, and the other end of the rear pull rod is fixedly connected with the main steel beam 11 of the main building wall 1; the upright column 31, the platform beam 32 and the inclined strut 33 are all box-shaped beams, and the rear pull rod 34 is an H-shaped beam;
the platform beam 32 is also provided with a guide frame 5, and the guide frame 5 is positioned on one side of the hydraulic lifter 41 close to the upright column 31; the guide frame 5 comprises a vertical rod 51, a guide plate 52 and two guide columns 53; the upright pole 51 is vertically arranged, the lower end of the upright pole is fixedly connected to the platform beam 32, the guide plate 52 is horizontally and fixedly connected to the upper end of the upright pole 51, the length direction of the guide plate 52 is perpendicular to that of the platform beam 32, and the two guide columns 53 are vertically arranged on two sides of the length direction of the guide plate 52 respectively.
Mounting 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; the ten hydraulic lifters 4 are respectively installed 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, the hydraulic pumps are respectively connected with the hydraulic lifters 4 one by one through hydraulic pipelines, and the hydraulic pump source system can independently control any one hydraulic lifter 4 by 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 a through hole above the platform beam 32 through a fixing plate 6; fixed plate 6 is L shaped steel board, and the minor face of L shaped steel board presses on the connecting plate of hydraulic lift 4 bottoms, and the long limit is fixed on platform roof beam 32, and fixed plate 6 has four, and balanced range is pasted tightly around hydraulic lift 4.
Fourthly, installing a steel strand 7 and a lifting appliance 8; a lifting appliance 8 is fixed at a position corresponding to the dome 2 right below each hydraulic lifter 41, and an anchor hole 81 is formed in the middle of each lifting appliance 8; the upper end of the steel strand 7 is connected with the hydraulic lifter 4, and the lower end of the steel strand passes through the anchor hole 81 and is anchored with the lifting appliance 8 right below the hydraulic lifter 4 through a special anchorage device of the steel strand 7. Sequentially connecting the ten bundles of steel strands 7 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 penetrates through the hydraulic lifter 4 and is dredged to one side through the guide frame 5, the steel strand 7 is a high-strength low-relaxation prestressed steel strand, the tensile strength is 1860MPa, the diameter of a single strand is 17.80mm, and the breaking tension is not less than 36 t.
Step five, trial promotion; setting the connection position of the dome 2 and the lifting appliance 8 as a lifting point 21; the hydraulic lifter 4 is controlled by a 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 which is just 100mm away from the jig frame, and each lifting point 21 on the dome 2 is located on the same horizontal plane;
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 by controlling the flow of the hydraulic pump source system, and the continuous process is 10 minutes; continuously increasing by 40% of the designed load power, wherein the continuous process is 10 minutes; and the process is repeated until the dome 2 is lifted, and the hydraulic lifter 4 reaches the load power for lifting the dome 2.
Standing; standing the dome 2 lifted in the step five for 2-24 hours at a certain height of the jig frame; the dome 2 should be kept still for enough time in winter to meet the deformation requirement in summer, and the standing time in summer can be shortened; and (3) comparing the deformation of the measured dome 2 with the theoretical deformation of the dome 2, continuing the next step if the deformation of the dome 2 is less than the theoretical deformation, removing the dome 2 if the deformation of the dome 2 is greater than the theoretical deformation, and repeating the step one, the step four to the step six.
Step seven, formal lifting; the hydraulic lifting system controls the hydraulic lifter 4 to continuously lift the standing dome 2 in a step-by-step loading mode, lift the dome to a position 1000mm away from the designed installation height of the dome 2, and stop lifting; and measuring the difference between each lifting point 21 and 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.
And step eight, building the oval frame system 12.
Step nine, the dome 2 is placed on the oval frame system 12; the dome 2 is placed on the oval frame system 12 by means of gradual unloading, which is: the computer synchronous control system controls the hydraulic lifter 4 to firstly reduce to 80% of the load power by controlling the flow of the hydraulic pump source system, and the continuous process is 10 minutes; continuously reducing the load power to 60 percent, wherein the continuous process is 10 minutes; until the steel strand 7 is loosened, the load is completely transferred to the oval frame system 12.
Step ten, dismantling equipment used in the lifting process; the lifting device comprises a lifting platform 3, a guide frame 5, a hydraulic lifting system, a steel strand 7, a lifting appliance 8, a fixing plate 6 and the like.
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (9)
1. The integral lifting construction method of the dome steel structure is characterized by comprising the following steps:
firstly, assembling a dome (2), building a jig frame on the ground in an elliptical space in the middle of a main building wall body (1), and assembling the dome (2) on the jig frame;
step two, lifting platforms (3) are arranged, a plurality of main steel beams (11) are selected on the inner side of a building main wall body (1) in a balanced mode, and a group of lifting platforms (3) are arranged above each selected main steel beam (11);
mounting a hydraulic lifting system, wherein the hydraulic lifting system comprises a plurality of hydraulic lifters (4), and the plurality of hydraulic lifters (4) are respectively mounted on the lifting platform (3) one by one;
fourthly, installing a steel strand (7) and a lifting appliance (8); a lifting appliance (8) is fixed at a position corresponding to the dome (2) right below each hydraulic lifter (4); the upper end of a steel strand (7) is connected with a 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 respectively;
step five, trial promotion; setting the joint of the dome (2) and the lifting appliance (8) as a lifting point (21); the hydraulic lifter (4) is controlled by a 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 away from the jig frame, and each lifting point (21) on the dome (2) is located on the same horizontal plane;
standing; standing the dome (2) lifted in the step five for 2-24 hours at a certain height of the jig; comparing the deformation of the dome (2) with the theoretical deformation of the dome (2), continuing the next step if the deformation of the dome (2) is smaller than the theoretical deformation, removing the dome (2) if the deformation of the dome (2) is larger than the theoretical deformation, 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 standing dome (2) in a step-by-step loading mode, and stops lifting after the dome is lifted to a height 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 a 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 oval frame system (12);
step nine, placing the dome (2) on an oval frame system (12);
and step ten, dismantling equipment used in the lifting process.
2. The integral lifting construction method for the steel structure of the dome according to claim 1, wherein the assembling dome (2) in the first step is specifically as follows: the method comprises the steps of establishing a plane control reference network above the ground in an oval space in the middle of a main wall body (1) of the building by using a total station, selecting a plurality of plane control reference points on the plane control reference network, vertically delivering the plane control reference points to the ground, building a jig frame below the plane control reference network, and assembling a dome (2) on the jig frame through the vertically delivered plane control reference points.
3. The integral lifting construction method for the steel structure of the dome steel structure as claimed in claim 1, wherein the lifting platform (3) in the second step comprises upright columns (31), platform beams (32), inclined struts (33) and rear pull rods (34);
the upright columns (31) are vertically arranged, and the lower ends of the upright columns are fixedly connected above the main steel beam (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 the end, far away from the upright post (31), of the platform beam (32) from top to bottom, and the hydraulic lifter (4) is installed in the through hole in the platform beam (32); one end of the inclined strut (33) is fixedly connected with the lower end of the upright post (31), and the other end of the inclined strut 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 a main steel beam (11) of the main building wall body (1).
4. The integral lifting construction method of the steel structure of the dome according to the claim 3, characterized in that the platform beam (32) is further provided with a guide frame (5), and the guide frame (5) is positioned at one side of the hydraulic lifter (4) close to the upright column (31);
the guide frame (5) comprises an upright rod (51), a guide plate (52) and two guide posts (53); the vertical setting of pole setting (51), and lower extreme fixed connection is on platform roof beam (32), deflector (52) level fixed connection is in pole setting (51) upper end, just the length direction of deflector (52) is perpendicular with the length direction of platform roof beam (32), two guide post (53) are vertical setting respectively in the length direction's of deflector (52 both sides.
5. The integral lifting construction method for the steel structure of the dome according to claim 1, wherein 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 all 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).
6. The integral lifting construction method for the dome steel structure as claimed in claim 5, wherein the gradual 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 5-15 minutes; continuously increasing by 40% of the designed load power, and keeping the process for 5-15 minutes; and (4) performing reciprocating circulation until the dome (2) is lifted, and the hydraulic lifter (4) reaches the load power for lifting the dome (2).
7. The integral lifting construction method of the dome steel structure according to the claim 1, characterized in that the middle of the lifting appliance (8) is provided with an anchor hole (81), and the lower end of the steel strand (7) passes through the anchor hole (81) and is anchored with the lifting appliance (8) through a special anchor of the steel strand (7).
8. The integral lifting construction method for the steel structure of the dome as claimed in claim 1, wherein the dome (2) is lifted to a distance of 100-200mm from the jig frame in the step five.
9. The integral lifting construction method for the steel structure of the dome according to the claim 1, characterized in that the dome (2) is lifted to the distance of 500-1000mm 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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