CN105625578A - Giant pre-stressed string structure suitable for enclosing super-long-span coal yard and construction method - Google Patents
Giant pre-stressed string structure suitable for enclosing super-long-span coal yard and construction method Download PDFInfo
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- CN105625578A CN105625578A CN201610081106.8A CN201610081106A CN105625578A CN 105625578 A CN105625578 A CN 105625578A CN 201610081106 A CN201610081106 A CN 201610081106A CN 105625578 A CN105625578 A CN 105625578A
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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
- 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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Abstract
The invention discloses a giant pre-stressed string structure suitable for enclosing a super-long-span coal yard and a construction method. The structure comprises a group of pre-stressed string structure units arranged in parallel at intervals, wherein every two adjacent pre-stressed string structure units are connected through connecting structures; each of the pre-stressed string structure unit comprises a space truss and a string cable connected below the space truss in a tensioning way; a group of support trusses is vertically connected between the space trusses and the string cables. In the structural system, small-sized triangular space trusses are taken as sub-structures for replacing chord members, web members and brace rods in the string structure to form a giant composite string structure; upper chord trusses, diagonal web trusses, horizontal web trusses and lower chord trusses can be prefabricated in a factory and assembled into the space trusses on site, and then the space trusses are mounted in place through a group slippage method, so that high construction efficiency is achieved; moreover, running of yard equipment is not influenced during construction, equipment modification is not required, factory shutdown is not required, the manufacturing cost is lowered, and resource waste is reduced.
Description
Technical field
The present invention relates to building renovation field, particularly a kind of coal yard transformation enclosed construction and construction method thereof.
Background technology
Serious atmospheric pollution and haze weather is caused in order to alleviate and avoid the coal yard dust of the enterprises such as power plant, steel mill, Coal Chemical Industry to escape, coal yard needs to close transformation, but normal production and existing loading and unloading capacity in coal yard can not be affected in transformation process, this is accomplished by carrying out awning closing on existing stock ground, and be that super-span is without column space structure, structural span is big, also to ensure simultaneously safe and reliable, require that construction is convenient.
Prestressing force beam string structure structure is a kind of prestressed steel structure system relying on the good rigid arch of space-load to collectively constitute in conjunction with drag-line and strut, plastic simplicity, power transmission is clear, reasonable stress, steel using amount is better than the conventional steel structural system such as Elements of Space Grid Truss, steel truss, suitable in large public buildings such as the railway station of large span, gymnasium, Convention and Exhibition Hall, terminals, and the industrial building such as large-span industrial building, indoor coal storage yard, closed bedding plant.
Long span truss string structure is generally by steel arch, strut and high intensity drag-line composition, span is up to 60 ~ 150m, span hour, steel arch is single arch steel beam column, when span is big, steel arch is generally adopted space arch truss, but it is as the increase of span, Truss Steel component length is increasing, component stability problem is also more and more prominent, component stability is increased typically via increasing member section, malformation simultaneously also increases with the increase cube of span, need to increase structural thickness to strengthen the rigidity of structure, structural thickness increase brings again new component stability problem, its result is exactly that span is more big, structural steel amount is increasing.
Summary of the invention
It is an object of the invention to provide huge prestressing force beam string structure and construction method that a kind of applicable super-span coal yard is closed, the technical problem that compression member is unstable will be solved; And the problem solving to reduce structural steel amount.
For achieving the above object, the present invention adopts the following technical scheme that
The huge prestressing force beam string structure that a kind of applicable super-span coal yard is closed, including the prestressing force beam string structure unit that one group of parallel interval is arranged, being connected by association structure between two adjacent Pin prestressing force beam string structure unit, described association structure is the contact truss that one group of parallel interval is arranged between two adjacent Pin prestressing force beam string structure unit.
Every Pin prestressing force beam string structure unit includes space truss and stretch-draw is connected to the string drag-line below space truss, is vertically connected to the support truss that one group of parallel interval is arranged between described space truss and a string drag-line.
Described space truss is the huge triangle space truss being made up of as minor structure triangle space truss, including two framves wind up truss, the frame lower edge truss parallel with the truss that winds up, be connected horizontally on horizontal abdomen truss that two framves wind up between truss and be connected to the oblique abdomen truss winding up between truss and lower edge truss.
The described truss that winds up, lower edge truss, oblique abdomen truss and horizontal abdomen truss as huge triangle space truss minor structure, be triangle space truss.
The upper end of described oblique abdomen truss is connected on three oblique abdomen truss connecting rod, lower end is connected to three oblique abdomen truss lower links.
On three oblique abdomen truss, one end of connecting rod is connected with the top boom of oblique abdomen truss and lower boom respectively, and the other end converges into and is a bit connected with the truss that winds up.
One end of three oblique abdomen truss lower links is connected with the top boom of oblique abdomen truss and lower boom respectively, and the other end converges into and is a bit connected with lower edge truss.
The described truss that winds up is the belfast truss being spliced successively by the truss sections that winds up, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom.
Described lower edge truss is the belfast truss being spliced successively by lower edge truss sections, including a top boom, two lower booms, the horizontal web member being connected horizontally between two lower booms and the diagonal web member being connected between top boom and lower boom.
Described horizontal abdomen truss includes two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom, its two top boom two ends connect with the top boom of the corresponding truss that winds up, and its lower boom two ends connect with the lower boom of the corresponding truss that winds up.
Described contact truss is spliced by contact truss sections, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom.
Described contact truss is corresponding with horizontal abdomen truss, and its two top boom two ends connect with the top boom of the corresponding truss that winds up, and its lower boom two ends connect with the lower boom of the corresponding truss that winds up.
Described support truss is overall truss or is spliced by support truss sections, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom.
The upper end of described support truss is connected on three support truss connecting rod, lower end is connected to three support truss lower links.
On three support truss, one end of connecting rod is connected with top boom and the lower boom of support truss, and the other end is converged into and is a bit connected with lower edge truss by node on support truss.
One end of three support truss lower links is connected with top boom and the lower boom of support truss, and the other end is converged into and is a bit connected with a string drag-line by cord clip.
On described support truss, node is connected with the lower boom of lower edge truss by four lower edge truss connecting rods, and one end of four lower edge truss connecting rods is symmetrically connected on the lower boom of lower edge truss, the other end converges into any and crosses to be connected to and support on truss on node.
On described support truss node include segment connecting plate, the upper ear plate, the lower segment connecting plate that are welded on segment connecting plate and be welded on the lower ear plate on lower segment connecting plate, connected by bearing pin between described upper lower ear plate.
Four lower edge truss connecting rods cross on the sphere being connected to segment connecting plate.
On three support truss, connecting rod crosses on the sphere being connected to lower segment connecting plate.
A kind of construction method being suitable for the huge prestressing force beam string structure that super-span coal yard is closed as mentioned, specifically comprises the following steps that
Step one, prefabrication wind up truss, lower edge truss, horizontal abdomen truss, oblique abdomen truss, contact truss, support truss and support truss on node, the truss that wherein winds up, lower edge truss, contact truss and support truss according to transport and lifting requirements be built in sections.
Step 2, transports each sections of prefabricated horizontal abdomen truss, oblique abdomen truss and the truss that winds up, lower edge truss, contact truss and support truss to job site, carries out on-site consolidation.
Step 3, on the ground by connecting rod, oblique abdomen truss lower link, lower edge truss connecting rod on horizontal abdomen truss, oblique abdomen truss, oblique abdomen truss respectively with each sections of wind up truss and lower edge truss ground spliced become space truss sections.
Step 4, sets up cripple at the construction field (site), and sets up one group of interim moulding bed below the position wanting assembled space truss.
Step 5, lifts and utilizes interim moulding bed to be aloft spliced into space truss each space truss sections successively.
The two ends of space truss are connected by step 6 with structural column.
Step 7, becomes support truss by support truss section assembling on the ground, and connects connecting rod and support truss lower link on support truss at support truss two ends.
Step 8, connects connecting rod and lower edge truss connecting rod on support truss by support truss lifting good for assembly to correct position and by node on support truss.
Step 9, installs a string drag-line, is connected by cord clip with a string drag-line correspondence position by the support truss lower link of support truss lower end.
Step 10, according to simulation result, carries out prestressed stretch-draw to a string drag-line, so far, completes a Pin space truss construction.
Step 11, repeats step 3 to step 10, until completing the construction of whole space truss.
Step 12, becomes contact truss on ground by contact truss section assembling.
Step 13, lifts contact truss good for assembly successively to correct position and connects with two adjacent Pin space trusses.
Step 14, repeats step 12 and step 13, until all completing contact truss connection construction between adjacent space truss, so far, completing coal yard large span and closing awning construction.
Compared with prior art the invention have the characteristics that and beneficial effect:
Different from traditional truss structure or prestressing force truss string structure, huge prestressing force beam string structure is divided into quarternary structure by the present invention, first being constituted the truss that winds up, oblique abdomen truss, horizontal abdomen truss and lower edge truss equilateral triangle space truss by top boom, lower boom and web member, this is first order structure; Afterwards, the truss that winds up, oblique abdomen truss, horizontal abdomen truss and lower edge truss constituting space truss as minor structure, this is second level structure; After again, being made up of the prestressing force beam string structure unit of single Pin space truss, support truss and a string drag-line, this is third level structure; Finally, huge prestressing force beam string structure is constituted with contacting truss by prestressing force beam string structure unit, this is fourth stage structure, quarternary structure is successively deeply, relation is clear, accept rationally, formed a kind of suitable in super-span new structural systen, decrease the slenderness ratio of mammoth structure component, improve stability and the bearing capacity of structure, save steel using amount, give full play to the advantage of steel beam column and drag-line, realize bigger span ability, building structure can be made to reach optimum in moulding, use space, cost, difficulty of construction, manufacture and transport.
The two ends of the space truss of the present invention are connected with the top of structural column, and two framves of space truss are winded up and are connected by the oblique abdomen truss of oblique crossing layout between truss and a frame lower edge truss, form a huge del space truss, the upper end of support truss is connected with lower edge truss by four pull bars, the lower end of support truss is connected with a string drag-line by cord clip, by a string cable tension Shi Hanzhang is formed a Pin prestressing force beam string structure unit, contact truss is adopted to be connected between two adjacent Pin prestressing force beam string structure unit, its power transmission effect is identical with main purlin, and compared with common real abdomen purlin, contact truss adopts del space truss structure, can significantly increase span, 20��40m is increased to by 5 traditional��8m, decrease the material usage of purlin, and owing to span increases, the distance between two adjacent Pin prestressing force beam string structure unit is made to increase, and then reduce the quantity of prestressing force beam string structure unit, thus reducing rolled steel dosage, contact truss is corresponding with the truss that winds up in space truss simultaneously is connected, strengthen the stability that prestressing force beam string structure unit is lateral, thus improve stability in the large.
The structural system of the present invention is using small-sized triangle space truss as minor structure, replace the chord member in beam-string structure, web member and strut, form huge compound beam-string structure, by prestressing force truss string structure monomer rod member excessive for slenderness ratio is converted into space truss minor structure, thus greatly reducing component slenderness ratio, it is possible to achieve 200 ~ 300m super-span without column space, be suitable for bar shaped coal yard close awning, solve the problem that compression member is unstable, reduce the steel using amount of structure.
The present invention carries out closing transformation for the stock ground of the outdoor coal yard in coal-burning power plant runed, steel plant, be welded to connect if can adopt between each truss structure of huge prestressing force beam string structure, then this huge prestressing force beam string structure adopts the mode that on-the-spot loose mail welding concatenation construction or factory's piecemeal processing are welded in conjunction with on-site hoisting to construct; Or mode that can also be with bolts, quovis modo, wind up truss, oblique abdomen truss, horizontal abdomen truss and lower edge truss etc. all can be prefabricated in the factory, and spelling becomes space truss at the scene, and space truss adopts the method installation in position of packet slip again, efficiency of construction is high, and work progress does not affect stock ground equipment and runs, equipment is without transformation, and factory is without stopping work, reduce cost, and decrease the wasting of resources.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the main TV structure schematic diagram of the present invention.
Fig. 3 is the plan structure schematic diagram of the present invention.
Fig. 4 is the side-looking structural representation of the present invention.
Fig. 5 is the partial structurtes schematic diagram of the present invention.
Fig. 6 is the truss structure schematic diagram that winds up of the present invention.
Fig. 7 is the oblique abdomen truss structure schematic diagram of the present invention.
Fig. 8 is the support truss structure schematic diagram of the present invention.
Fig. 9 is node structure schematic diagram on the support truss of the present invention.
Accompanying drawing labelling: 1-winds up, and truss 2-oblique abdomen truss, 3-horizontal abdomen truss, 4-lower edge truss, 5-contact truss, 6-supports that truss, 7-open string drag-line, 8-structural column, 9-support on truss connecting rod, 11-oblique abdomen truss lower link on node, 10-oblique abdomen truss, 12-supports connecting rod on truss, 13-supports segment connecting plate, 18-lower ear plate, 19-bearing pin under truss lower link, 14-lower edge truss connecting rod, the upper segment connecting plate of 15-, 16-upper ear plate, 17-.
Detailed description of the invention
Embodiment is referring to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, the huge prestressing force beam string structure that this applicable super-span coal yard is closed, including the prestressing force beam string structure unit that one group of parallel interval is arranged, between two adjacent Pin prestressing force beam string structure unit, spacing is 40m and is connected by association structure, and described association structure is the contact truss 5 that one group of parallel interval is arranged between two adjacent Pin prestressing force beam string structure unit; The span of every Pin prestressing force beam string structure unit is 300m, include space truss and stretch-draw is connected to the string drag-line 7 below space truss, the support truss 6 that one group of parallel interval is arranged vertically it is connected between described space truss and a string drag-line 7, described support truss 6 is by 9 roads, and middle support truss 6 length is 35m to the maximum.
Described space truss is the huge triangle space truss being made up of as minor structure triangle space truss, whole space truss span is 300m, is highly 10m for 15m, width, including two framves wind up truss 1, the frame lower edge truss 4 parallel with the truss that winds up, be connected horizontally on horizontal abdomen truss 3 that two framves wind up between truss 1 and be connected to the oblique abdomen truss 2 winding up between truss 1 and lower edge truss 4.
The described truss 1 that winds up, lower edge truss 4, oblique abdomen truss 2 and horizontal abdomen truss 3 as huge triangle space truss minor structure, be similarly triangle space truss, the width of minor structure truss and be highly 2m, its each rod member all adopts round steel pipe.
Shown in Fig. 5, Fig. 7, the upper end of described oblique abdomen truss 2 is connected on three oblique abdomen truss connecting rod 10, lower end is connected to three oblique abdomen truss lower links 11; On three oblique abdomen truss, one end of connecting rod 10 is connected with the top boom of oblique abdomen truss 2 and lower boom respectively, and the other end converges into and is a bit connected with the truss 1 that winds up; One end of three oblique abdomen truss lower links 11 is connected with the top boom of oblique abdomen truss 2 and lower boom respectively, and the other end converges into and is a bit connected with lower edge truss 4.
Shown in Figure 6, the described truss 1 that winds up is the belfast truss being spliced successively by the truss sections that winds up, every segmental length is about 20m, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom.
Described lower edge truss 4 is the belfast truss being spliced successively by lower edge truss sections, every segmental length is about 20m, including a top boom, two lower booms, the horizontal web member being connected horizontally between two lower booms and the diagonal web member being connected between top boom and lower boom.
Described horizontal abdomen truss 3 includes two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom, its two top boom two ends connect with the top boom of the corresponding truss 1 that winds up, and its lower boom two ends connect with the lower boom of the corresponding truss 1 that winds up.
Described contact truss 5 is spliced by two sections of contact truss sections, every segmental length is about 20m, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom.
Described contact truss 5 is corresponding with horizontal abdomen truss 3 position, as it is shown on figure 3, its two top boom two ends connect with the top boom of the corresponding truss 1 that winds up, its lower boom two ends connect with the lower boom of the corresponding truss 1 that winds up.
Shown in Figure 8, described support truss 6 is different due to length, can overall truss or be spliced by support truss sections, it is divided into two sections to be prefabricated in the factory the support truss 6 of more than 20m, to meet movement requirement, support truss 6 includes two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom; The upper end of described support truss 6 is connected on three support truss connecting rod 12, lower end is connected to three support truss lower links 13; On three support truss, one end of connecting rod 12 is connected with top boom and the lower boom of support truss 6, and the other end is converged into and is a bit connected with lower edge truss 4 by node 9 on support truss, and wherein on three support truss, connecting rod 12 crosses on the sphere being connected to lower segment connecting plate; One end of three support truss lower links 13 is connected with top boom and the lower boom of support truss 6, and the other end is converged into and is a bit connected with a string drag-line 7 by cord clip.
Shown in Figure 9, on described support truss node 9 include segment connecting plate, the upper ear plate, the lower segment connecting plate that are welded on segment connecting plate and be welded on the lower ear plate on lower segment connecting plate, connected by bearing pin between described upper lower ear plate, described otic placode is two folder one formulas, namely upper ear plate has one and is clamped between a pair lower ear plate, and both pass through bearing pin pin joint; Or lower ear plate has one and is clamped between a pair upper ear plate, both pass through bearing pin pin joint.
The lower boom of described lower edge truss 4 is connected with node 9 on support truss by four lower edge truss connecting rods 14, and one end of four lower edge truss connecting rods is symmetrically connected on the lower boom of lower edge truss 4, the other end converges into any and crosses on the sphere being connected to segment connecting plate.
In huge prestressing force beam string structure, in the place that each truss member crosses, if each rod member different diameters is little, then welded spherical node can be adopted to be connected; If be computed, the chord member diameter of upper lower edge truss much larger than the rod member diameter crossed, then can directly cross and pass through in main chord mutually, adopts welding or bolted mode to connect.
A kind of construction method being suitable for the huge prestressing force beam string structure that super-span coal yard is closed as mentioned, specifically comprises the following steps that
Step one, prefabrication wind up truss 1, lower edge truss 4, horizontal abdomen truss 3, oblique abdomen truss 2, contact truss 5, support truss 6 and support truss on node 9, the truss that wherein winds up, lower edge truss, contact truss and support truss according to transport and lifting requirements be built in sections.
Step 2, transports each sections of prefabricated horizontal abdomen truss, oblique abdomen truss and the truss that winds up, lower edge truss, contact truss and support truss to job site, carries out on-site consolidation.
Step 3, on the ground by connecting rod, oblique abdomen truss lower link, lower edge truss connecting rod on prefabricated horizontal abdomen truss, oblique abdomen truss, oblique abdomen truss respectively with each sections of wind up truss and lower edge truss ground spliced become space truss sections, each segmental length is about 20m.
Step 4, sets up cripple at the construction field (site), and sets up 10 interim moulding beds below the position wanting assembled space truss.
Step 5, lifts and utilizes interim moulding bed to be aloft spliced into the space truss of 300m span each space truss sections successively.
Step 6, the two ends of space truss are connected with structural column 8: the height of described structural column 8 is 50m, one end of space truss is hinged with structural column 8, the other end is connected with structural column 8 single-directional sliding support, wherein, pivoting support structure: each rod member crosses and is welded in hollow ball node, is welded to connect plate and is connected or bolt connection by bearing pin with capital embedded board under hollow ball node; Single-directional sliding support structure: each rod member crosses and is welded in hollow ball node, is welded to connect plate and contacts connection or rubber support connection with capital embedded board by slide plate under hollow ball node, in truss span direction, bearing side arranges lateral Displacement plate.
Step 7, becomes support truss 6 by support truss section assembling on the ground, and connects connecting rod 12 and support truss lower link 13 on support truss at support truss two ends.
Step 8, lifts assembled good support truss 6 to correct position and connects connecting rod 12 and lower edge truss connecting rod 14 on support truss by supportting node 9 on truss.
Step 9, installs a string drag-line 7, is connected by cord clip with a string drag-line correspondence position by the support truss lower link 13 of support truss 6 lower end: wherein, and cord clip can adopt double; two segment crab bolt to be connected, open arc shape rope groove in the middle of the plane of two blocks of segment plates, it is simple to rope passes.
Step 10, according to simulation result, carries out prestressed stretch-draw to a string drag-line, so far, completes a Pin space truss construction.
Step 11, repeats step 3 to step 10, until completing the construction of whole space truss: in space truss work progress, for preventing huge truss lateral bucking, drawing and putting interim cable rope and laterally secure temporarily between space truss both sides and ground.
Step 12, becomes contact truss 5 on ground by contact truss section assembling.
Step 13, lifts contact truss 5 good for assembly successively to correct position and connects with two adjacent Pin space trusses, and contact truss 5, as the main purlin of structure, enhances the stability in the large of structure.
Step 14, repeats step 12 and step 13, until all completing contact truss connection construction between adjacent space truss, so far, completing coal yard large span and closing awning construction.
Claims (10)
1. the huge prestressing force beam string structure that an applicable super-span coal yard is closed, including the prestressing force beam string structure unit that one group of parallel interval is arranged, connected by association structure between two adjacent Pin prestressing force beam string structure unit, it is characterised in that: described association structure is the contact truss (5) that one group of parallel interval is arranged between two adjacent Pin prestressing force beam string structure unit;
Every Pin prestressing force beam string structure unit includes space truss and stretch-draw is connected to the string drag-line (7) below space truss, is vertically connected to the support truss (6) that one group of parallel interval is arranged between described space truss and a string drag-line (7);
Described space truss is the huge triangle space truss being made up of as minor structure triangle space truss, including two framves wind up truss (1), the frame lower edge truss (4) parallel with the truss that winds up, be connected horizontally on the horizontal abdomen truss (3) that two framves wind up between truss (1) and the oblique abdomen truss (2) being connected between the truss that winds up (1) and lower edge truss (4);
The described truss that winds up (1), lower edge truss (4), oblique abdomen truss (2) and horizontal abdomen truss (3) as huge triangle space truss minor structure, be triangle space truss.
2. the huge prestressing force beam string structure that applicable super-span coal yard according to claim 1 is closed, it is characterised in that: the upper end of described oblique abdomen truss (2) is connected on three oblique abdomen truss connecting rod (10), lower end is connected to three oblique abdomens truss lower link (11);
On three oblique abdomen truss, one end of connecting rod (10) is connected with the top boom of oblique abdomen truss (2) and lower boom respectively, and the other end converges into and is a bit connected with the truss that winds up (1);
One end of three oblique abdomens truss lower link (11) is connected with the top boom of oblique abdomen truss (2) and lower boom respectively, and the other end converges into and is a bit connected with lower edge truss (4).
3. the huge prestressing force beam string structure that applicable super-span coal yard according to claim 2 is closed, it is characterized in that: described in the truss (1) that winds up be the belfast truss being spliced successively by the truss sections that winds up, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom;
Described lower edge truss (4) is the belfast truss being spliced successively by lower edge truss sections, including a top boom, two lower booms, the horizontal web member being connected horizontally between two lower booms and the diagonal web member being connected between top boom and lower boom.
4. the huge prestressing force beam string structure that applicable super-span coal yard according to claim 3 is closed, it is characterized in that: described horizontal abdomen truss (3) includes two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom, its two top boom two ends connect with the top boom of the corresponding truss that winds up (1), and its lower boom two ends connect with the lower boom of the corresponding truss that winds up (1).
5. the huge prestressing force beam string structure that applicable super-span coal yard according to claim 4 is closed, it is characterized in that: described contact truss (5) is spliced by contact truss sections, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom;
Described contact truss (5) is corresponding with horizontal abdomen truss (3), and its two top boom two ends connect with the top boom of the corresponding truss that winds up (1), and its lower boom two ends connect with the lower boom of the corresponding truss that winds up (1).
6. the huge prestressing force beam string structure that the applicable super-span coal yard according to claim 1 to 5 any one is closed, it is characterized in that: the overall truss of described support truss (6) or be spliced by support truss sections, including two top booms, lower boom, the horizontal web member being connected horizontally between two top booms and the diagonal web member being connected between top boom and lower boom;
The upper end of described support truss (6) is connected on three support truss connecting rod (12), lower end is connected to three supports truss lower link (13);
On three support truss, one end of connecting rod (12) is connected with top boom and the lower boom of support truss (6), and the other end is converged into and is a bit connected with lower edge truss (4) by node (9) on support truss;
One end of three supports truss lower link (13) is connected with top boom and the lower boom of support truss (6), and the other end is converged into and is a bit connected with a string drag-line (7) by cord clip.
7. the huge prestressing force beam string structure that applicable super-span coal yard according to claim 6 is closed, it is characterized in that: on described support truss, node (9) is connected with the lower boom of lower edge truss (4) by four lower edges truss connecting rod (14), one end of four lower edge truss connecting rods is symmetrically connected on the lower boom of lower edge truss (4), the other end converges into any and crosses and be connected on support truss on node (9).
8. the huge prestressing force beam string structure that applicable super-span coal yard according to claim 7 is closed, it is characterized in that: on described support truss node (9) include segment connecting plate, the upper ear plate, the lower segment connecting plate that are welded on segment connecting plate and be welded on the lower ear plate on lower segment connecting plate, connected by bearing pin between described upper lower ear plate.
9. the huge prestressing force beam string structure that applicable super-span coal yard according to claim 8 is closed, it is characterised in that: four lower edges truss connecting rod (14) cross on the sphere being connected to segment connecting plate;
On three support truss, connecting rod (12) crosses on the sphere being connected to lower segment connecting plate.
10. the construction method of the huge prestressing force beam string structure of the applicable super-span coal yard closing as described in claim 1 to 9 any one, it is characterised in that specifically comprise the following steps that
Step one, prefabrication wind up truss (1), lower edge truss (4), horizontal abdomen truss (3), oblique abdomen truss (2), contact truss (5), support truss (6) and support truss on node (9), the truss that wherein winds up, lower edge truss, contact truss and support truss according to transport and lifting requirements be built in sections;
Step 2, transports each sections of prefabricated horizontal abdomen truss, oblique abdomen truss and the truss that winds up, lower edge truss, contact truss and support truss to job site, carries out on-site consolidation;
Step 3, on the ground by connecting rod, oblique abdomen truss lower link, lower edge truss connecting rod on horizontal abdomen truss, oblique abdomen truss, oblique abdomen truss respectively with each sections of wind up truss and lower edge truss ground spliced become space truss sections;
Step 4, sets up cripple at the construction field (site), and sets up one group of interim moulding bed below the position wanting assembled space truss;
Step 5, lifts and utilizes interim moulding bed to be aloft spliced into space truss each space truss sections successively;
The two ends of space truss are connected by step 6 with structural column (8);
Step 7, becomes support truss (6) by support truss section assembling on the ground, and connects connecting rod (12) and support truss lower link (13) on support truss at support truss two ends;
Step 8, connects connecting rod (12) and lower edge truss connecting rod (14) on support truss by support truss (6) lifting good for assembly to correct position and by node (9) on support truss;
Step 9, installs a string drag-line (7), support truss lower link (13) of support truss (6) lower end is connected by cord clip with a string drag-line correspondence position;
Step 10, according to simulation result, carries out prestressed stretch-draw to a string drag-line, so far, completes a Pin space truss construction;
Step 11, repeats step 3 to step 10, until completing the construction of whole space truss;
Step 12, becomes contact truss (5) on ground by contact truss section assembling;
Step 13, lifts assembled good contact truss (5) successively to correct position and connects with two adjacent Pin space trusses;
Step 14, repeats step 12 and step 13, until all completing contact truss connection construction between adjacent space truss, so far, completing coal yard large span and closing awning construction.
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| CN108571075A (en) * | 2017-03-10 | 2018-09-25 | 五冶集团上海有限公司 | A kind of large-span shell assembling jig frame staged Platforms Construct Method of Super |
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| CN109235769A (en) * | 2018-11-16 | 2019-01-18 | 中建二局安装工程有限公司 | Truss structure and its installation method are reinforced in a kind of recessed fish-bellied type combination of large span |
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| CN115041853A (en) * | 2022-06-20 | 2022-09-13 | 中铁宝桥（扬州）有限公司 | Method for manufacturing upper chord block body with hollowed-out transverse connection |
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| CN108842954A (en) * | 2018-05-29 | 2018-11-20 | 中国建筑第二工程局有限公司 | Installation and construction method of huge different-section honeycomb beam structure system of wing-shaped roof |
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| CN109235769B (en) * | 2018-11-16 | 2023-06-20 | 中建二局安装工程有限公司 | Large-span concave fish belly type combined reinforced truss structure and installation method thereof |
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| CN111119494A (en) * | 2019-12-30 | 2020-05-08 | 北京市机械施工集团有限公司 | High-altitude in-situ construction method for ultra-large span string arched steel structure |
| CN111119494B (en) * | 2019-12-30 | 2021-12-14 | 北京市机械施工集团有限公司 | High-altitude in-situ construction method for ultra-large span string arched steel structure |
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