CN113235947B - Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed - Google Patents
Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed Download PDFInfo
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- CN113235947B CN113235947B CN202110627131.2A CN202110627131A CN113235947B CN 113235947 B CN113235947 B CN 113235947B CN 202110627131 A CN202110627131 A CN 202110627131A CN 113235947 B CN113235947 B CN 113235947B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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Abstract
The invention discloses a construction method of an ultrahigh large-span giant ribbed space folded plate grid structure steel cover shed, belonging to the technical field of constructional engineering and comprising the following steps: dividing the steel awning into a roof awning and a vertical face awning; after the construction of the concrete main structure of the venue is finished, constructing a vertical face awning, mounting a horizontally spliced support jig frame on a stand structure in the venue, mounting a front lifting frame and a rear lifting frame in the venue, splicing a rotary structure unit on the horizontally spliced support jig frame and arranging a limiting device; selecting a front pulling point and a rear pulling point on the rotating structure unit, and installing pulling point devices on the front pulling point and the rear pulling point; and lifting the rotating structure unit upwards to a designed elevation, welding the joint of the rotating structure unit and the vertical face awning, and installing a rod piece between the rotating structure units by adopting hoisting equipment in an embedding manner. The invention improves the construction efficiency and the safety factor of the ultrahigh large-span giant ribbed space folded plate grid structure steel awning, reduces the overhead working amount and ensures the construction quality.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a construction method of an ultrahigh large-span giant ribbed space folded plate grid structure steel cover shed.
Background
With the rapid development of the infrastructure construction in China, a large number of ultrahigh large-span deformed steel structural projects with different forms, such as venues, airports, high-speed railway stations and the like, emerge, and higher requirements are put forward on the accurate and efficient construction of steel structures. At present, the common construction methods for mounting the steel sheds of the large stadiums comprise a high-altitude bulk mounting method, a strip or block mounting method, a high-altitude sliding method, an integral hoisting method, an integral lifting method, an integral jacking method and the like.
The high-altitude bulk method is a method for directly and totally assembling small units or parts (single rod piece and single node) at a designed position, is suitable for various types of net racks with bolted joints, and is particularly suitable for the situation of difficult lifting.
The strip or block mounting method is a mounting method that the net rack is divided into strip or block units which are respectively hoisted to a high-altitude design position by hoisting equipment to be placed in place and then form a whole. The method is suitable for the net racks with small changes of rigidity and stress conditions after division, such as net racks with two-direction orthogonal square pyramid, positive evacuation square pyramid and the like. The mounting method is beneficial to improving the engineering quality and can save most of the assembly supports.
The high-altitude sliding method is an installation method for splicing the split net rack units into a whole by sliding the split net rack units to a designed position on a preset slide rail one by one. The device is suitable for the racks such as the square pyramid which is placed rightly, the evacuation square pyramid which is placed rightly, the two-direction orthogonal square pyramid and the like. The sliding unit is guaranteed to be a geometric invariant system during sliding.
The integral hoisting method is a construction method that after the net racks are assembled on the ground, the net racks are hoisted in place by hoisting equipment. The welding work of the integral net rack is carried out on the ground, the construction quality is better ensured, the method is suitable for various net racks, and the net racks can be horizontally moved or rotated to be in place at high altitude during hoisting.
The integral lifting method is a construction method for mounting lifting equipment on a structural column and lifting a net rack spliced on the ground in place. The net rack integral lifting method can structurally install a lifting device to lift the net rack, and can also lift the net rack when the sliding formwork construction of the column is carried out. It is suitable for peripheral support and multi-point support net frame, and can be constructed by small machines such as plate-lifting machine and hydraulic jack.
The integral jacking method is a lifting method that the net rack is assembled into a whole on the ground at a designed position and then the net rack is jacked to a designed height by a jack. It is suitable for multi-point supporting net frame with less supporting points.
In summary, the high-altitude bulk mounting method is to perform total assembly at a design position, the high-altitude slip method is to perform accumulated slip assembly at a design elevation, both the two mounting modes need to arrange a large number of supporting jig frames, the high-altitude welding amount is large, the high-altitude hoisting workload is large, the requirement on precision control is high, a large amount of manpower, machines and tools are often input due to the limitation of a construction period, and the construction quality and the construction safety are difficult to guarantee. The strip or block mounting method and the integral hoisting method refer to hoisting the assembled unit to a designed position by means of hoisting equipment, the two mounting methods are often influenced by the hoisting capacity and hoisting range of the hoisting equipment, and meanwhile, the hoisting capacity of the hoisting equipment is supplemented with the self weight, so that the requirement on the bearing capacity of the walking track is high. While the integral lift method and the integral jacking method are generally applicable to regular multi-point support net frames, the integral jacking method is also affected by the stroke of the jacking equipment.
Aiming at large steel awning with large component size, heavy rod piece weight, large hoisting difficulty, large structural span and ultrahigh installation height, especially ultrahigh large-span huge ribbed folded plate grid structure, the installation requirement of the steel structural engineering is difficult to meet by using the existing steel awning installation method.
Therefore, how to provide a construction method for an ultrahigh large-span huge ribbed space folded plate type grid structure steel shed is a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a construction method of an ultrahigh large-span giant ribbed space folded plate type grid structure steel shed, which improves the construction efficiency and safety factor of the ultrahigh large-span giant ribbed space folded plate type grid structure steel shed, reduces the overhead working capacity and ensures the construction quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method of an ultrahigh large-span giant ribbed space folded plate grid structure steel shed comprises the following steps:
dividing the steel awning into a roof awning and a vertical face awning; wherein, the rotary structure unit in the roof awning is installed by adopting a construction method of rotation and lifting; the vertical face awning is installed by adopting a high-altitude bulk method;
after the construction of the concrete main structure of the venue is finished, the construction of the vertical face awning is started, meanwhile, a horizontally spliced support jig frame is arranged on a stand structure in the venue, a plurality of front lifting frames and rear lifting frames are arranged in the venue, and a rotary structure unit is spliced on the horizontally spliced support jig frame and is provided with a corresponding limiting device; after the assembly of the rotating structure unit is completed, selecting proper front pulling points and back pulling points on the rotating structure unit, and installing pulling point devices on the front pulling points and the back pulling points; and connecting the lifting equipment with the lifting point device, lifting the rotary structure unit upwards to a designed elevation, welding the joint of the rotary structure unit and the vertical face awning, and embedding and installing rod pieces between the rotary structure units by adopting lifting equipment to complete the construction of the ultrahigh large-span giant ribbed space folded plate-shaped grid structure steel awning.
Preferably, the roof awning is reasonably divided into n rotary structure units according to the structural form of the roof awning, and the rotary structure units are sequentially numbered as 1# unit, 2# unit, … and n # unit, the divided rotary structure units are symmetrical, and the rotary structure units are ensured to be in a geometrically-unchangeable system and stable in a plane.
Preferably, after the front lifting frame and the rear lifting frame are installed, the lifting equipment is installed on the front lifting frame and the rear lifting frame, and the lifting equipment and the lifting point device are connected through a buckle cable; and a monitoring instrument is arranged on the rotary structure unit to dynamically monitor the change condition of the rotary structure unit in the rotary lifting process.
Preferably, after the rotating lifting system is inspected to be intact, under the conditions of no wind or breeze and good weather, the lifting devices on the front lifting frame and the rear lifting frame are started, the rotating structure unit is lifted by 100mm in an attempt, and the rotating structure unit is kept still for one day.
Preferably, after the lifting stage to be tested is finished, the lifting equipment on the front lifting frame is started, and the rotating structure unit is rotated to the position of the design line according to the planned lifting speed; the positions of the center-penetrating oil cylinders on the front lifting frame and the rear lifting frame are continuously adjusted, so that the position of the center-penetrating oil cylinder on the front lifting frame is consistent with the radial sliding distance of the front pulling point, the position of the center-penetrating oil cylinder on the rear lifting frame is consistent with the radial sliding distance of the rear pulling point, the buckling rope is guaranteed to be always kept in vertical pulling, and the rotating structure unit is lifted upwards to the designed elevation according to the planned lifting speed.
Preferably, the front lifting frame comprises four lattice columns, a first transverse connecting beam, a second transverse connecting beam and a third transverse connecting beam, the four lattice columns form a frame structure, and the transverse connecting beam, the second transverse connecting beam and the third transverse connecting beam are sequentially arranged on the lattice columns from bottom to top.
Preferably, after the venue concrete main structure is constructed to a certain floor height, the vertical face awning, the horizontal splicing support jig frame, the front lifting frame and the rear lifting frame are inserted into the area where the concrete main structure is constructed in advance for construction.
The invention has the beneficial effects that:
firstly, the horizontally split supporting jig frame is installed along the stand structural form by utilizing the structural form of the stand in the yard, so that the installation height of the horizontally split supporting jig frame is obviously reduced.
Secondly, the rotary structure units are assembled and assembled at low altitude, so that the high altitude operation amount is obviously reduced, the construction efficiency, the installation precision, the construction safety coefficient and the like are improved, and the construction quality is also ensured.
In addition, the invention has the advantages of short time for vertically rotating the rotary structure unit in place, large vertical rotation angle, high vertical rotation height, large space size of the vertical rotation structure unit and heavy weight.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a top view of a steel canopy;
FIG. 2 is a front view of the steel canopy;
FIG. 3 is a schematic cross-sectional view of a steel canopy;
FIG. 4 is a schematic view of the mounting structure of the rotary structural unit;
FIG. 5 is a schematic view of a rotary structure unit;
FIG. 6 is a schematic cross-sectional view of the rotating structural unit in a horizontal assembled state and rotated to a design line position;
FIG. 7 is a schematic cross-sectional view of the rotary structural unit rotated to a design line position and lifted to a desired position;
fig. 8 is a schematic plan view of the front lifting frame, the rear lifting frame and the lifting point device.
Wherein, in the figure:
1-roofing awning; 2-a facade awning; 3-concrete main structure; 4-a rotational structural unit; 5-front pull point; 6-rear pulling point; 7-a first transverse tie beam; 8-front lifting frame; 9-rear lifting frame; 10-horizontal assembling supporting jig; 11-a lifting device; 12-a buckle cable; 13-a second transverse tie beam; 14-third transverse tie beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-8, in order to improve the construction efficiency and the safety coefficient of the ultrahigh large-span giant ribbed space folded plate-shaped grid structure steel shed, reduce the overhead working amount and ensure the construction quality, the invention provides a construction method of the ultrahigh large-span giant ribbed space folded plate-shaped grid structure steel shed, which comprises the following steps:
and S1, dividing the steel awning into a vertical face awning and a roof awning according to the structural characteristics and the stress form of the steel awning. The rotary structure units in the roof awning are installed by a construction method combining rotation and lifting, and the rods among the rotary structure units are installed by hoisting equipment in a hoisting mode; the vertical face awning is installed by adopting a high-altitude bulk method. As shown in fig. 1 and fig. 2, the steel awning of the embodiment is divided into a roof awning and a facade awning.
S2, reasonably dividing the roof awning into n rotary structural units according to the structural form of the roof awning, and numbering the rotary structural units sequentially into 1# unit, 2# unit, … # unit and n # unit. Meanwhile, the divided rotating structure units should be symmetrical as much as possible, and the rotating structure units are ensured to be in a geometrically-invariant system and stable in a plane. In this embodiment, the canopy is divided into 8 rotating structural units, which are numbered in the counterclockwise direction as 1# unit, 2# unit, …, 8# unit in that order, as shown in fig. 4.
And S3, in order to save construction period, after the concrete main structure of the venue is constructed, constructing the vertical face awning, simultaneously installing a horizontal splicing supporting jig frame on a stand structure in the venue, and installing a front lifting frame and a rear lifting frame in the venue.
And S4, after the horizontally assembled supporting jig frame is installed, assembling the rotating structure unit on the horizontally assembled supporting jig frame and arranging a corresponding limiting device, as shown in figure 5.
And S5, after the assembly of the rotary structure unit is completed, selecting a front pulling point and a rear pulling point on the rotary structure unit, and installing pulling point devices on the front pulling point and the rear pulling point. In this embodiment, 2 front pull points and 3 rear pull points are selected for each rotational structural unit. The 3 rear pulling points are also called rear pulling point a, rear pulling point B and rear pulling point C, respectively, and the rear pulling point A, C is at the same elevation, and the 2 selected front pulling points are also at the same elevation, and the distances from the 2 front pulling points to the rear pulling point A, C are equal.
And S6, after the front lifting frame and the rear lifting frame are installed, installing lifting equipment on the front lifting frame and the rear lifting frame, and connecting the lifting equipment and a lifting point device by using a buckle cable (a steel strand) (the lifting equipment on the front lifting frame is connected with the lifting point device on the front lifting point, and the lifting equipment on the rear lifting frame is connected with the lifting point device on the rear lifting point). Meanwhile, a monitoring instrument is installed on the rotary lifting system to dynamically monitor the change condition of the rotary lifting system in the rotary lifting process. In this embodiment, 8 front lifting frames and 24 rear lifting frames are provided, wherein each rotary structure unit is provided with 1 front lifting frame and 3 rear lifting frames, the 3 rear lifting frames are respectively called rear lifting frame a, rear lifting frame B and rear lifting frame C, and the 3 rear lifting frames are provided because the rotary structure unit rod is large in size, long in length and heavy in weight, so that a plurality of rear lifting frames are required to be provided to coordinate the stress and deformation of the rotary structure unit in the rotary lifting process. Meanwhile, three transverse connecting beams are arranged at different elevations on the front lifting frame in the embodiment and are sequentially called as a first transverse connecting beam, a second transverse connecting beam and a third transverse connecting beam from bottom to top, and the three transverse connecting beams are arranged for enhancing the overall stability of the front lifting frame.
And S7, after all the rotating lifting installation procedures are ready, releasing the limiting device arranged during horizontal splicing, assembling and rotating the structural unit.
And S8, after the limiting devices on the horizontal splicing assembly rotating structure units are released, checking whether the rotating and lifting system is complete and good.
And S9, after the rotating lifting system is inspected to be intact, starting lifting equipment on the front lifting frame and the rear lifting frame under the conditions of no wind or breeze and good weather, trying to lift the rotating structural unit by 100mm, and standing for one day. In this embodiment, the rotating structure units are tried to be lifted symmetrically in groups, wherein the 1# unit and the 5# unit are classified as a group, the 3# unit and the 7# unit are classified as a group B, and the 2# unit, the 4# unit, the 6# unit and the 8# unit are classified as a group C.
And S10, after the lifting stage to be tested is finished, starting the lifting equipment on the front lifting frame, and rotating the rotating structure unit to the design line position according to the planned lifting speed. In the rotation stage of this embodiment, the rotation structure units of group a, group B, and group C are sequentially rotated, and in addition to the lifting device on the lifting frame before starting, the lifting device on the lifting frame B after starting is also needed, because the lifting point B and the lifting point A, C are not in the same elevation plane, and the lifting point B slides when the connecting line of the lifting point A, C is taken as the imaginary axis, the lifting device on the lifting frame B after starting is needed. Meanwhile, the positions of the center-penetrating oil cylinders on the front lifting frame and the rear lifting frame B need to be continuously adjusted to enable the radial sliding distances between the center-penetrating oil cylinders and the corresponding lifting points to be consistent, so that the buckling ropes are ensured to be always kept in vertical lifting. In addition, because the prerequisite rises the frame and has set up three horizontal tie beams, and rotatory constitutional unit falls in the prerequisite and rises in the frame, so rotatory in-process, horizontal tie beam need be through the process of demolising, reinstallating, and the concrete implementation mode is: and when the rotary structure unit rotates to be close to the second transverse connecting beam, the second transverse connecting beam is detached, the rotary structure unit is rotated again, after the rotary structure unit rotates to be higher than the second transverse connecting beam, the second transverse connecting beam is installed, the third transverse connecting beam is detached and installed again according to the step, and the first transverse connecting beam is lower than the rotary structure unit, so that the step is not needed.
And S11, after the rotation stage is finished, starting the lifting devices on the front lifting frame and the rear lifting frame at the same time, and lifting the rotating structure unit to the designed elevation upwards according to the planned lifting speed. In the lifting stage of this embodiment, the rotational structural units of the group a, the group B, and the group C are sequentially lifted to the designed elevation position. Meanwhile, in this stage, the rotary structure units may need to be finely adjusted to be just raised to the designed elevation, and the embedded rods between the rotary structure units can be precisely butted.
And S12, after the lifting stage is finished, fixing the rotating structure unit by a limiting device to prevent the rotating structure unit from swinging in the air.
And S13, after the limiting device is made on the rotating structure unit lifted in place, welding the joint of the rotating structure unit and the vertical face awning to ensure that the joint is complete and meets the construction requirements.
And S14, after all the rotating structure units are lifted in place, the limiting devices are made, and the vertical face awning is welded, and the rod pieces between the rotating structure units are installed in an embedding manner by adopting hoisting equipment.
And S15, after the installation stage of the embedded rod piece is completed, removing the limiting device installed when the rotating structure unit is lifted in place.
And S16, after the limiting devices installed when the rotating structure unit is lifted in place are all removed, gradually releasing lifting force according to a planned unloading scheme to complete the system conversion of the steel awning.
And S17, after the conversion of the steel cover shed system is finished, removing the temporary support measures.
In S3, in order to save construction period, after the concrete main structure of the venue is constructed to a certain floor height, the vertical face awning, the horizontal split supporting jig frame and the front lifting frame can be inserted into the area where the concrete main structure is constructed in advance for construction. Meanwhile, the front lifting frame and the rear lifting frame in the S3 comprise four lattice columns, a first transverse connecting beam, a second transverse connecting beam and a third transverse connecting beam, the four lattice columns form a frame structure, the transverse connecting beam, the second transverse connecting beam and the third transverse connecting beam are sequentially mounted on the lattice columns from bottom to top, wherein the two lattice columns of the front lifting frame fall in the area of the rotary structural unit, so that the rotary structural unit needs to be inspected and analyzed by rotary sweeping collision first, and then the mounting position of the front lifting frame is determined.
The lifting point device in the S5 is composed of an ear plate and a pin shaft, and the lifting point device is arranged in a rotatable pin shaft mode in the construction method, so that the buckling cable is prevented from being twisted in the rotating process.
The lifting equipment in the S6 comprises a core-through oil cylinder, a buckling rope (steel strand), a hydraulic station, a fixing device, a lifting control system, a pushing control system and the like. The pushing control systems are arranged on the front lifting frame and the rear lifting frame, because the rotating structure unit is in the rotating process, the rotating tracks of the front pulling point and the rear pulling point are an arc line, namely the front pulling point and the rear pulling point have a sliding distance in the radial direction, the position of the center-penetrating oil cylinder needs to be controlled by arranging the pushing control system, so that the buckling rope can be always kept to be vertically pulled in the rotating stage. Meanwhile, the rotary lifting system in S6 includes a rotary structural unit, a lifting point device, a front lifting frame, a rear lifting frame, a lifting device, and the like.
In addition, in the steps S7-S16, the change of the rotating and lifting system needs to be dynamically monitored, and data collection and data analysis reports are made.
According to the invention, a stand structure form is utilized, a horizontally spliced supporting jig frame is arranged along a stand structure, then a steel member is spliced on the horizontally spliced supporting jig frame in a low altitude mode to form a rotating structure unit, and then the rotating structure unit is vertically rotated to a design line shape and then is lifted to a design elevation. The horizontally spliced supporting jig frame is installed along the stand structural form by utilizing the structural form of the stand in the yard, so that the installation height of the horizontally spliced supporting jig frame is obviously reduced. The low-altitude assembling and rotating structure unit obviously reduces the high-altitude operation amount, improves the construction efficiency, the installation precision, the construction safety factor and the like, and also ensures the construction quality. The time for vertically rotating the rotary structure unit in place is short, the vertical rotation angle is large, the vertical rotation height is high, and the vertical rotation structure unit is large in space size and heavy in weight.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The construction method of the ultrahigh large-span giant ribbed space folded plate grid structure steel shed is characterized by comprising the following steps of:
dividing the steel awning into a roof awning and a vertical face awning; wherein, the rotary structure unit in the roof awning is installed by adopting a construction method of rotation and lifting; the vertical face awning is installed by adopting a high-altitude bulk method;
after the construction of the concrete main structure of the venue is finished, the construction of the vertical face awning is started, meanwhile, a horizontally spliced support jig frame is arranged on a stand structure in the venue, a plurality of front lifting frames and rear lifting frames are arranged in the venue, and a rotary structure unit is spliced on the horizontally spliced support jig frame and is provided with a corresponding limiting device; after the assembly of the rotary structure unit is completed, selecting proper front pulling points and rear pulling points on the rotary structure unit, and installing pulling point devices on the front pulling points and the rear pulling points; connecting a lifting device with the lifting point device, lifting the rotary structure unit to a designed elevation upwards, welding the joint of the rotary structure unit and the vertical face awning, and mounting a rod piece between the rotary structure units by embedding and repairing the lifting device to complete the construction of the ultrahigh large-span giant ribbed space folded plate-shaped grid structure steel awning;
mounting a horizontally spliced supporting jig frame along a stand structure by utilizing a stand structure form, then performing low-altitude splicing on a steel member on the horizontally spliced supporting jig frame to form a rotating structure unit, and then vertically rotating the rotating structure unit to a design line shape and then lifting the rotating structure unit to a design elevation;
after the rotary structure units are assembled, proper front pulling points and rear pulling points are selected on the rotary structure units, pulling point devices are installed on the front pulling points and the rear pulling points, each rotary structure unit selects 2 front pulling points and 3 rear pulling points, wherein the 3 rear pulling points are respectively called rear pulling points A, rear pulling points B and rear pulling points C, the rear pulling points A, C are located on the same elevation, meanwhile, the selected 2 front pulling points are located on the same elevation, and the distances from the 2 front pulling points to the rear pulling points A, C are equal.
2. The construction method of the ultrahigh large-span giant ribbed space folded plate-shaped grid structure steel awning as claimed in claim 1, wherein the roof awning is reasonably divided into n number of rotary structural units according to the structural form of the roof awning, and the rotary structural units are sequentially numbered as 1# unit, 2# unit, … and n # unit, the divided rotary structural units are symmetrical, and the rotary structural units are ensured to be geometrically indeformable and stable in a plane.
3. The construction method of the ultrahigh large-span giant ribbed space folded plate type grid structure steel shed as claimed in claim 1, wherein after the front lifting frame and the rear lifting frame are installed, a lifting device is installed on the front lifting frame and the rear lifting frame, and the lifting device and the lifting point device are connected by a buckle cable; and a monitoring instrument is arranged on the rotary structure unit to dynamically monitor the change condition of the rotary structure unit in the rotary lifting process.
4. The method as claimed in claim 3, wherein after the rotary lifting system is inspected to be intact, starting the lifting devices on the front and rear lifting frames under the condition of no wind or breeze and good weather, and trying to lift the rotary structural unit by 100mm and standing for one day.
5. The construction method of the ultrahigh large-span giant ribbed space folded plate type grid structure steel shed as claimed in claim 4, wherein after the trial lifting stage is finished, the lifting equipment on the front lifting frame is started, and the rotating structure unit is rotated to the design line position according to the planned lifting speed; the positions of the center-penetrating oil cylinders on the front lifting frame and the rear lifting frame are continuously adjusted, so that the position of the center-penetrating oil cylinder on the front lifting frame is consistent with the radial sliding distance of the front pulling point, the position of the center-penetrating oil cylinder on the rear lifting frame is consistent with the radial sliding distance of the rear pulling point, the buckling rope is guaranteed to be always kept in vertical pulling, and the rotating structure unit is lifted upwards to the designed elevation according to the planned lifting speed.
6. The construction method of the ultrahigh large-span giant ribbed space folded plate-shaped grid structure steel shed as claimed in claim 1, wherein the front lifting frame comprises four grid columns, a first transverse connecting beam, a second transverse connecting beam and a third transverse connecting beam, the four grid columns are combined into a frame structure, and the transverse connecting beam, the second transverse connecting beam and the third transverse connecting beam are sequentially installed on the grid columns from bottom to top.
7. The construction method of the ultrahigh large-span giant ribbed space folded plate type grid structure steel awning as claimed in claim 1, wherein after the venue concrete main structure is constructed to a certain floor height, the vertical awning, the horizontal splicing support jig frame, the front lifting frame and the rear lifting frame are inserted into the area where the concrete main structure is constructed in advance.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110627131.2A CN113235947B (en) | 2021-06-04 | 2021-06-04 | Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed |
| PCT/CN2022/096147 WO2022253209A1 (en) | 2021-06-04 | 2022-05-31 | Construction method for steel shed of ultrahigh large-span giant ribbed spatial folded-plate-shaped grid structure |
| ZA2023/07166A ZA202307166B (en) | 2021-06-04 | 2023-07-17 | Construction method for a steel shed of an ultrahigh large-span giant ribbed spatial folded-plate-shaped grid structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110627131.2A CN113235947B (en) | 2021-06-04 | 2021-06-04 | Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed |
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| Publication Number | Publication Date |
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| CN113235947A CN113235947A (en) | 2021-08-10 |
| CN113235947B true CN113235947B (en) | 2022-06-07 |
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| CN202110627131.2A Active CN113235947B (en) | 2021-06-04 | 2021-06-04 | Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed |
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| WO (1) | WO2022253209A1 (en) |
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|---|---|---|---|---|
| CN113235947B (en) * | 2021-06-04 | 2022-06-07 | 中国建筑第四工程局有限公司 | Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed |
| CN113235946B (en) * | 2021-06-04 | 2022-06-21 | 中国建筑第四工程局有限公司 | High-altitude rotation construction method for steel cover shed of large-scale venue |
| CN114215366B (en) * | 2021-12-29 | 2023-03-31 | 浙江精工钢结构集团有限公司 | Lifting construction method for dense hanging points of large-span arched roof |
| CN116044175B (en) * | 2022-12-21 | 2023-11-14 | 中交建筑集团有限公司 | Intelligent multipoint lifting construction scheme determining method and system |
| CN116905817B (en) * | 2023-09-12 | 2023-11-21 | 北京城建集团有限责任公司 | Large-scale steel roof efficient accumulation sliding construction method with limited construction field |
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| CN113235947B (en) * | 2021-06-04 | 2022-06-07 | 中国建筑第四工程局有限公司 | Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed |
| CN113235948B (en) * | 2021-06-04 | 2022-06-07 | 中国建筑第四工程局有限公司 | Spatial vertical rotation construction method for steel structure roof of large-scale venue |
| CN113235946B (en) * | 2021-06-04 | 2022-06-21 | 中国建筑第四工程局有限公司 | High-altitude rotation construction method for steel cover shed of large-scale venue |
| CN113622576B (en) * | 2021-09-08 | 2022-11-25 | 中国建筑第四工程局有限公司 | Swivel construction method for structural space of steel cover shed roof of ultra-large stadium |
-
2021
- 2021-06-04 CN CN202110627131.2A patent/CN113235947B/en active Active
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2022
- 2022-05-31 WO PCT/CN2022/096147 patent/WO2022253209A1/en unknown
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Also Published As
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| WO2022253209A1 (en) | 2022-12-08 |
| CN113235947A (en) | 2021-08-10 |
| ZA202307166B (en) | 2023-08-30 |
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