CN117536334A - Accumulated slippage construction method for high-altitude large-span single-layer reticulated shell - Google Patents
Accumulated slippage construction method for high-altitude large-span single-layer reticulated shell Download PDFInfo
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- CN117536334A CN117536334A CN202311694129.2A CN202311694129A CN117536334A CN 117536334 A CN117536334 A CN 117536334A CN 202311694129 A CN202311694129 A CN 202311694129A CN 117536334 A CN117536334 A CN 117536334A
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- 239000002356 single layer Substances 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- 238000009434 installation Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 239000010410 layer Substances 0.000 claims description 10
- 230000001186 cumulative effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005496 tempering Methods 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
- E04B1/342—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
- E04B1/32—Arched structures; Vaulted structures; Folded structures
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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
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
-
- 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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
- E04B1/34331—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by three-dimensional 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
-
- 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
- E04B1/32—Arched structures; Vaulted structures; Folded structures
- E04B2001/3229—Arched structures; Vaulted structures; Folded structures constructed using a boom
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The application relates to the technical field of steel structure net rack construction, and provides a high-altitude large-span single-layer net shell accumulated slip construction method, which comprises the following steps: dividing the latticed shell structure into a plurality of latticed shell units, and assembling the latticed shell units on the ground in a segmented manner; building an aerial work platform; installing a sliding track beam, a steel column and a crawler; installing a high-altitude supporting jig frame, and hoisting the first section of reticulated shell unit to the high-altitude supporting jig frame for integral molding; carrying out inhaul cable installation and tensioning of the first section of latticed shell unit; dismantling the high-altitude supporting jig frame; pushing the first section of reticulated shell unit to slide to a target position while the crawler crawls; hoisting and integrally forming the next section of reticulated shell unit until the accumulated sliding of the reticulated shell structure is completed; and dismantling the aerial work platform. The beneficial effects of the invention are as follows: the construction difficulty is low, the construction efficiency is high, the construction safety is high, the construction cost is low, and the construction quality is easy to control.
Description
Technical Field
The invention belongs to the technical field of steel structure net rack construction, and particularly relates to a high-altitude large-span single-layer net shell accumulated slip construction method.
Background
Along with the continuous development of the building industry in China, in order to meet the requirements of building use functions and outer elevation modeling, a single-layer latticed shell structure is always a use object of building function parts such as large space, large span, ultra-high atrium and the like. The single-layer net shell structure is generally composed of steel beams, steel columns, steel inhaul cables, steel castings and steel supports, the installation position of the net shell structure is generally located between roof layers of two building structures, the net shell structure is high in distance from the ground and in an arch shape, the installation difficulty is high, the precision requirement is high, the risk is high, and the installation of the high-altitude large-span single-layer net shell is always a difficult point in the net shell construction process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-altitude large-span single-layer reticulated shell accumulated sliding construction method, which greatly improves the construction efficiency of a high-altitude large-span single-layer reticulated shell structure, reduces the safety construction risk, has good economic benefit and is easy to control in quality.
The invention provides a high-altitude large-span single-layer reticulated shell accumulated slip construction method, which comprises the following steps of:
step 1, dividing the reticulated shell structure into a plurality of sections of reticulated shell units according to the positions of steel castings and inhaul cables of the reticulated shell structure, and carrying out sectional assembly of the reticulated shell structure on the ground; building an overhead working platform between two existing buildings of a net shell structure to be constructed;
step 2, respectively installing two sliding track beams on the concrete structure beams of the roof layer of the two existing buildings; sequentially installing a plurality of steel columns on two sliding rail beams according to the length of each section of reticulated shell unit, and connecting the steel columns with the concrete structure beams by a construction temporary supporting device; installing the crawler on the sliding track beam, and connecting the crawler with the steel column;
step 3, installing a high-altitude supporting jig frame and a steel casting of a first section of net shell unit on an aerial working platform, hoisting the first section of net shell unit on the ground to the high-altitude supporting jig frame for integral molding, and enabling two ends of the first section of net shell unit to be respectively connected with steel columns on two sliding track beams;
step 4, carrying out the installation and tensioning of the inhaul cable of the first section of reticulated shell unit; dismantling the high-altitude supporting jig frame;
step 5, the temporary supporting device is disconnected from the steel column, and the crawler crawls on the sliding rail beam and pushes the first section of reticulated shell unit to slide to a target position on the sliding rail beam; returning to the step 3, hoisting and integrally forming the next section of reticulated shell unit until the accumulated sliding of the reticulated shell structure is completed;
and 6, cable tensioning, unloading the latticed shell structure and dismantling the aerial work platform.
Further, the step of installing the sliding rail beam in the step 2 includes: the method comprises the steps of horizontally paving a sliding track beam on a concrete structure beam, installing fixed clamping plates on two sides of the sliding track beam, compacting the fixed sliding track beam by using the fixed clamping plates, and fixedly connecting the fixed clamping plates with embedded parts embedded in the concrete structure beam.
Further, the temporary supporting devices are distributed on two sides of the sliding track beam and are in supporting connection between the steel column and the concrete structure beam.
Further, the crawler comprises an oil cylinder and a clamping block; one end of the oil cylinder is connected with the clamping block, and the other end of the oil cylinder is connected with the steel column; when the clamping blocks clamp the sliding rail beam, the oil cylinders stretch to push the steel columns to slide on the sliding rail beam; when the clamping blocks loosen the sliding track beam, the oil cylinders retract to pull the clamping blocks to climb on the sliding track beam.
Further, the side wall of the steel column is connected with a pushing lug plate, and the pushing lug plate is connected with the oil cylinder.
Further, the step 1 of dividing the latticed shell structure into a plurality of segments of latticed shell units according to the positions of the steel castings and the inhaul cables, and the step of assembling the latticed shell structure in a segmented manner on the ground comprises the following steps: dividing the reticulated shell structure into a plurality of sections of reticulated shell units according to the positions of the steel castings and the inhaul cables, drawing a ground supporting jig construction drawing based on the sizes of the divided sections of reticulated shell units, checking and calculating the stability of the ground supporting jig construction drawing, constructing the ground supporting jig based on the ground supporting jig construction drawing, and carrying out sectional assembly of the reticulated shell structure on the ground supporting jig.
Further, the step of setting up the aerial working platform in the step 1 between two existing buildings of the net shell structure to be constructed includes: according to the design position of the reticulated shell structure between two existing buildings, determining the sliding direction of the aerial working platform and the reticulated shell structure, drawing a vertical rod layout of the aerial working platform, and checking the stability of the vertical rod layout; based on the pole setting layout, pole setting, cross rod and horizontal shear support of the aerial work platform are built layer by layer, the pole setting of the aerial work platform is accurately positioned by using a level gauge and a total station, and after the pole setting layout is built to a designed height, a platform plate is fully paved above the pole setting layout and is fixed.
Further, a horizontal safety net bag is arranged below each horizontal shear stay of the aerial working platform.
Further, each section of the reticulated shell unit comprises a plurality of reticulated shell sheet bodies; and a plurality of net shell pieces are spliced transversely and longitudinally to form the net shell unit.
Further, at least two of the plurality of reticulated shell sheets of each of the plurality of reticulated shell units have different planar dimensions.
The beneficial effects of the invention are as follows:
1. the construction difficulty is low, and the construction efficiency is high. The net shell structure is divided into a plurality of sections of net shell units, the net shell units are assembled in sections on the ground, the operation is simple and convenient, the construction is efficient, the accumulated sliding of the net shell structure sections is the same, and the proficiency is high;
2. the construction safety is high. The high-altitude operation platform can be erected according to the standard of the high-altitude formwork body, the stability and the bearing capacity meet the high-altitude installation operation requirement of the latticed shell structure, and the high-altitude operation load is reduced after the high-altitude operation platform is erected; the ground assembled latticed shell structure is beneficial to construction safety, and potential safety hazards of high-altitude operation are further reduced.
3. The turnover times are high, and the construction cost is low. The components of the aerial working platform belong to turnover materials, and can serve as a structural formwork and a latticed shell structure for installation, so that the cost is saved. The ground support jig frame and the high-altitude support jig frame can be used in a turnover mode after the net shell unit slides each time, and cost is saved.
4. The construction quality is easy to control. The net shell structure is assembled and welded on the ground to form a sheet, so that the welding quality and the installation accuracy of welding seams are facilitated, and the deformation and arching of the net shell structure are ensured to meet the requirements. The inhaul cable and the steel casting are installed and tensioned on the high-altitude operation platform, so that elevation and cable force can be easily controlled.
Drawings
FIG. 1 is a schematic flow chart of the high-altitude large-span single-layer reticulated shell accumulated slip construction method of the invention;
fig. 2 is a schematic top view of a ground support matrix with a reticulated shell unit supported thereon in the method of the present invention.
FIG. 3 is a schematic cross-sectional view 1-1 of FIG. 2.
Fig. 4 is a schematic cross-sectional view of 2-2 of fig. 2.
Fig. 5 is a top view of an overhead support jig in the method of the invention.
Fig. 6 is a side view of the overhead support jig of fig. 5.
FIG. 7 is a schematic plan view of a latticed shell unit assembled above an aerial platform in the method of the present invention.
Fig. 8 is a schematic diagram of a partial front view structure of an aerial platform in the method of the present invention.
Fig. 9 is a schematic plan view of a latticed shell structure and a skid rail beam between existing buildings in the method of the present invention.
Fig. 10 is a schematic plan view of the distribution of the plurality of reticulated shell sheets of one reticulated shell unit in the method of the present invention.
FIG. 11 is an enlarged view of a portion of a crawler, steel column, and skid rail beam in the method of the present invention.
Fig. 12 is a left-hand structural schematic diagram of fig. 11.
In the figure: the device comprises a base steel beam, a 2-supporting steel beam, a 3-connecting steel beam, a 4-net shell unit, a 5-inhaul cable, a 6-steel casting, a 7-high-altitude operation platform, an 8-sliding track beam, a 9-embedded part, a 10-temporary supporting device, a 11-fixing clamping plate, a 12-concrete structure beam, a 13-steel column, a 14-crawler and a 15-pushing lug plate; 16-high altitude supporting jig frame.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples.
The high-altitude large-span single-layer reticulated shell accumulated slip construction method shown in fig. 1 comprises the following steps:
step 1, dividing the latticed shell structure into a plurality of sections of latticed shell units 4 according to the positions of a steel casting 6 and a inhaul cable 5, and carrying out sectional assembly of the latticed shell structure on the ground; and erecting an aerial working platform 7 between two existing buildings of the net shell structure to be constructed.
The step 1 specifically comprises the following steps: dividing the reticulated shell structure into a plurality of sections of reticulated shell units 4 according to the positions of the steel castings 6 and the inhaul cables 5, drawing a ground supporting jig construction drawing based on the divided sections of reticulated shell units 4, checking the stability of the ground supporting jig construction drawing, constructing the ground supporting jig based on the ground supporting jig construction drawing, and carrying out sectional assembly of the reticulated shell structure on the ground supporting jig. According to the design position of the reticulated shell structure between two existing buildings, determining the sliding direction of the aerial working platform 7 and the reticulated shell structure, drawing a vertical rod layout of the aerial working platform 7, and checking the stability of the vertical rod layout; as shown in fig. 2-4, the ground support jig comprises a base steel beam 1, a support steel beam 2 and a connecting steel beam 3; the base steel beam 1, the support steel beam 2 and the connecting steel beam 3 are fixedly installed according to a design drawing of the ground support jig; after the ground support jig is installed, the first section of reticulated shell unit 4 of the reticulated shell structure is installed above the ground support jig.
As shown in fig. 8, based on the pole setting layout, pole setting, cross bar and horizontal shear support of the aerial work platform 7 are set up layer by layer, the pole setting of the aerial work platform 7 is accurately positioned by using a level gauge and a total station, and after being set up to a designed height, a platform plate is fully paved above the pole setting layout and fixed. When the aerial work platform 7 is erected, the upright posts of the aerial work platform 7 are accurately positioned by using a level gauge and a total station, and the upright posts and the cross bars of the aerial work platform 7 are both provided with a disc buckle frame; the bottom of the upright rod of the aerial work platform 7 is provided with a skid, and a horizontal safety net is arranged below each horizontal scissor support of the aerial work platform 7; after being erected to the designed height, the platform plate is fully paved above the designed height and fixed.
As shown in fig. 10, each section of the reticulated shell unit 4 includes a plurality of reticulated shell sheets; a plurality of net shell pieces are spliced in the transverse and longitudinal directions to form the net shell unit 4. At least two of the plurality of reticulated shell sheets of each section of reticulated shell unit 4 have different planar dimensions. In this embodiment, each section of the reticulated shell unit 4 includes 8 reticulated shell sheets, and each section of the reticulated shell unit 4 is divided into three parts along the longitudinal direction of the reticulated shell structure, where the first part includes a first reticulated shell sheet, a second reticulated shell sheet, and a third reticulated shell sheet that are disposed along the transverse direction of the reticulated shell structure; the second part comprises a fourth reticulated shell sheet body, a fifth reticulated shell sheet body and a sixth reticulated shell sheet body which are arranged along the transverse direction of the reticulated shell structure; the third portion includes a seventh and eighth reticulated shell sheets disposed in a transverse direction of the reticulated shell structure. Wherein, first piece net shell lamellar body and fourth piece net shell lamellar body set up along the longitudinal direction of net shell structure, and second piece net shell lamellar body and fifth piece net shell lamellar body set up along the longitudinal direction of net shell structure, and third piece net shell lamellar body and sixth piece net shell lamellar body set up along the longitudinal direction of net shell structure. The first net shell piece body and the third net shell piece body have the same size and weight of 8 tons; the second and third mesh shell bodies are each larger in size and weight than the first and third mesh shell bodies. The fourth and sixth net shell pieces are the same in size and weight of 7 tons; the fifth net shell body is larger in size and weight than the fourth and sixth net shell bodies. The seventh and eighth mesh shell bodies are the same in size and weight and are larger than any one of the first to sixth mesh shell bodies.
A steel casting 6 is arranged at the center of the lower part of each reticulated shell unit 4, and four corners of the steel casting 6 and the reticulated shell units 4 are respectively tensioned through a guy cable 5.
Step 2, respectively installing the two sliding track beams 8 on the concrete structure beams 12 of the roof layers of the existing building, wherein the concrete structure beams 12 can be the existing structure of the existing building or the structure of site construction; a plurality of steel columns 13 are sequentially arranged on the two sliding track beams 8 according to the length of each section of the reticulated shell unit 4 along the longitudinal direction of the reticulated shell structure, and a construction temporary supporting device 10 is used for connecting the steel columns 13 with the concrete structure beams 12; the crawler 14 is mounted on the skid rail beam 8, and the crawler 14 is connected with the steel column 13.
As shown in fig. 11 and 12, the step of installing the slip rail beam 8 includes: the sliding track beam 8 is horizontally paved on the concrete structure beam 12, the fixed clamping plates 11 are installed on two sides of the sliding track beam 8, the sliding track beam 8 is pressed and fixed by the fixed clamping plates 11, and the fixed clamping plates 11 are fixedly connected with the embedded parts 9 embedded in the concrete structure beam 12. Part of the embedded part 9 is embedded in the concrete structure beam 12, and the other part is positioned at the top of the concrete structure beam 12 and distributed on two sides of the sliding track beam 8 for welding with the fixed clamping plates 11 on two sides of the sliding track beam 8. Under the action of the fixed clamping plates 11, the sliding track beam 8 is stably arranged on the concrete structure beam 12. The length direction of the sliding track beam 8 is the same as the length direction of the concrete structure beam 12, and is the longitudinal direction of the net shell structure.
In order to ensure that the steel columns 13 remain stationary on the sliding rail beam 8, temporary support means 10 are distributed on both sides of the sliding rail beam 8 and are supportingly connected between the steel columns 13 and the concrete structure beam 12. The lower end of the steel column 13 is provided with a steel shoe which sits on the slip rail beam 8, and the temporary support device 10 can be supported between the steel shoe and the concrete structure beam 12. The temporary support device 10 may be a steel bar or a steel pipe. The temporary supporting device 10 may also adopt a vertical telescopic structure, such as a hydraulic telescopic cylinder, the upper end of which is fixed with a steel sliding shoe, and the lower end of which abuts against the concrete structural beam 12 to support the steel column 13.
The sliding rail beam 8 adopts 43kg/m I-steel. The fixed clamping plates 11 and the embedded parts 9 are arranged at the sliding track beam 8 at intervals of 800 mm. In this embodiment, the pull cable 5 uses a PE cable, the steel casting 6 adopts a cast steel G20Mn5 material for tempering, the pull cable 5 and the steel casting 6 are integrally cast and formed, and the pull cable 5 and the steel casting 6 are positioned below the reticulated shell structure.
The crawler 14 adopts a TLPG-1000 self-locking hydraulic crawler 14, and the crawler 14 comprises an oil cylinder and a clamping block; one end of the oil cylinder is connected with the clamping block, and the other end of the oil cylinder is connected with the steel column 13; when the clamping blocks clamp the sliding rail beam 8, the oil cylinder stretches to push the steel column 13 to slide on the sliding rail beam 8; when the clamp splice loosens the sliding rail beam 8, the oil cylinder retracts to pull the clamp splice to climb on the sliding rail beam 8. The side wall of the steel column 13 is connected with a pushing lug plate 15, and the pushing lug plate 15 is connected with an oil cylinder.
And 3, as shown in fig. 7-9, installing a high-altitude supporting jig 16 and a cast steel 6 of the first-section net shell unit 4 on the high-altitude working platform 7, hoisting the first-section net shell unit 4 on the ground onto the high-altitude supporting jig 16 for integral forming, and connecting two ends of the first-section net shell unit 4 with steel columns 13 on two sliding rail beams 8 respectively. The overhead support jig 16 is shown in fig. 5 and 6.
Step 4, installing and tensioning the inhaul cable 5 of the first section of reticulated shell unit 4; the overhead support jig 16 is removed.
Step 5, the temporary supporting device 10 is disconnected from the steel column 13, and the crawler 14 pushes the first section of reticulated shell unit 4 to slide to a target position on the sliding track beam 8 while crawling on the sliding track beam 8; and returning to the step 3, hoisting and integrally forming the next section of reticulated shell unit 4 until the accumulated sliding of the reticulated shell structure is completed.
And 6, repairing and tensioning the inhaul cable 5, unloading the reticulated shell structure, and dismantling the aerial work platform 7. The aerial platform 7 is removed according to the principles of first supporting and first removing, and dividing and removing from outside and inside.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the invention without departing from the principles thereof are intended to be comprehended by those skilled in the art and are intended to be within the scope of the invention.
Claims (10)
1. The high-altitude large-span single-layer reticulated shell accumulated slip construction method is characterized by comprising the following steps of:
step 1, dividing the reticulated shell structure into a plurality of sections of reticulated shell units according to the positions of steel castings and inhaul cables of the reticulated shell structure, and carrying out sectional assembly of the reticulated shell structure on the ground; building an overhead working platform between two existing buildings of a net shell structure to be constructed;
step 2, respectively installing two sliding track beams on the concrete structure beams of the roof layer of the two existing buildings; sequentially installing a plurality of steel columns on two sliding rail beams according to the length of each section of reticulated shell unit, and connecting the steel columns with the concrete structure beams by a construction temporary supporting device; installing the crawler on the sliding track beam, and connecting the crawler with the steel column;
step 3, installing a high-altitude supporting jig frame and a steel casting of a first section of net shell unit on an aerial working platform, hoisting the first section of net shell unit on the ground to the high-altitude supporting jig frame for integral molding, and enabling two ends of the first section of net shell unit to be respectively connected with steel columns on two sliding track beams;
step 4, carrying out the installation and tensioning of the inhaul cable of the first section of reticulated shell unit; dismantling the high-altitude supporting jig frame;
step 5, the temporary supporting device is disconnected from the steel column, and the crawler crawls on the sliding rail beam and pushes the first section of reticulated shell unit to slide to a target position on the sliding rail beam; returning to the step 3, hoisting and integrally forming the next section of reticulated shell unit until the accumulated sliding of the reticulated shell structure is completed;
and 6, cable tensioning, unloading the latticed shell structure and dismantling the aerial work platform.
2. The method for constructing the integrated sliding of the high-altitude large-span single-layer net shell according to claim 1, wherein the step of installing the sliding rail beam in the step 2 comprises the steps of: the method comprises the steps of horizontally paving a sliding track beam on a concrete structure beam, installing fixed clamping plates on two sides of the sliding track beam, compacting the fixed sliding track beam by using the fixed clamping plates, and fixedly connecting the fixed clamping plates with embedded parts embedded in the concrete structure beam.
3. The method for constructing the integrated sliding of the high-altitude large-span single-layer net shell according to claim 2, wherein the temporary supporting devices are distributed on two sides of the sliding track beam and are supported and connected between the steel column and the concrete structure beam.
4. The high-altitude large-span single-layer reticulated shell accumulated slip construction method according to claim 1, wherein the crawler comprises an oil cylinder and a clamping block; one end of the oil cylinder is connected with the clamping block, and the other end of the oil cylinder is connected with the steel column; when the clamping blocks clamp the sliding rail beam, the oil cylinders stretch to push the steel columns to slide on the sliding rail beam; when the clamping blocks loosen the sliding track beam, the oil cylinders retract to pull the clamping blocks to climb on the sliding track beam.
5. The method for constructing the integrated sliding of the high-altitude large-span single-layer net shell according to claim 4, wherein the side wall of the steel column is connected with a pushing lug plate, and the pushing lug plate is connected with the oil cylinder.
6. The method for constructing the integrated sliding of the high-altitude large-span single-layer reticulated shell according to claim 1, wherein the step 1 of dividing the reticulated shell structure into a plurality of sections of reticulated shell units according to the positions of the steel castings and the inhaul cables, and the step of assembling the reticulated shell structure in a sectional manner on the ground comprises the following steps:
dividing the reticulated shell structure into a plurality of sections of reticulated shell units according to the positions of the steel castings and the inhaul cables, drawing a ground supporting jig construction drawing based on the sizes of the divided sections of reticulated shell units, checking and calculating the stability of the ground supporting jig construction drawing, constructing the ground supporting jig based on the ground supporting jig construction drawing, and carrying out sectional assembly of the reticulated shell structure on the ground supporting jig.
7. The method for constructing a single-layer and single-layer high-altitude net shell cumulative slip according to claim 6, wherein the step of setting up the high-altitude operation platform between two existing buildings with net shell structures to be constructed in step 1 comprises the steps of:
according to the design position of the reticulated shell structure between two existing buildings, determining the sliding direction of the aerial working platform and the reticulated shell structure, drawing a vertical rod layout of the aerial working platform, and checking the stability of the vertical rod layout; based on the pole setting layout, pole setting, cross rod and horizontal shear support of the aerial work platform are built layer by layer, the pole setting of the aerial work platform is accurately positioned by using a level gauge and a total station, and after the pole setting layout is built to a designed height, a platform plate is fully paved above the pole setting layout and is fixed.
8. The method for constructing the integrated sliding of the high-altitude large-span single-layer net shell according to claim 7, wherein a horizontal safety net bag is arranged below each horizontal shear support of the high-altitude operation platform.
9. The method for constructing the high-altitude large-span single-layer reticulated shell integrated sliding according to claim 1, wherein each section of the reticulated shell unit comprises a plurality of reticulated shell sheet bodies; and a plurality of net shell pieces are spliced transversely and longitudinally to form the net shell unit.
10. The method for constructing the integrated sliding of the high-altitude large-span single-layer reticulated shell according to claim 1, wherein at least two of the plurality of reticulated shell sheets of each section of the reticulated shell unit have different planar dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311694129.2A CN117536334A (en) | 2023-12-11 | 2023-12-11 | Accumulated slippage construction method for high-altitude large-span single-layer reticulated shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311694129.2A CN117536334A (en) | 2023-12-11 | 2023-12-11 | Accumulated slippage construction method for high-altitude large-span single-layer reticulated shell |
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| CN117536334A true CN117536334A (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311694129.2A Pending CN117536334A (en) | 2023-12-11 | 2023-12-11 | Accumulated slippage construction method for high-altitude large-span single-layer reticulated shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117536334A (en) |
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2023
- 2023-12-11 CN CN202311694129.2A patent/CN117536334A/en active Pending
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