CN111663698B - Assembled steel structure roof and assembly construction method thereof - Google Patents
Assembled steel structure roof and assembly construction method thereofInfo
- Publication number
- CN111663698B CN111663698B CN202010631570.6A CN202010631570A CN111663698B CN 111663698 B CN111663698 B CN 111663698B CN 202010631570 A CN202010631570 A CN 202010631570A CN 111663698 B CN111663698 B CN 111663698B
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- China
- Prior art keywords
- edge
- girders
- arc
- beams
- steel structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
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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
-
- 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
- E04G21/165—Tools or apparatus specially adapted for in situ prefabricated building elements to be tilted up in position
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2457—Beam to beam connections
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses an assembled steel structure roof which comprises a concrete foundation formed by combining a plurality of upright posts and circular ring beams and a steel structure roof body detachably connected to the concrete foundation, wherein the steel structure roof body comprises an inner ring in the middle, a plurality of edge girders uniformly distributed on the periphery of the inner ring, a plurality of arc girders detachably arranged between the two edge girders, edge secondary girders with two ends detachably connected with the arc girders and the concrete foundation respectively, and a plurality of arc secondary girders detachably arranged between the edge secondary girders and the edge girders, a plurality of extension girders the same as the number of the edge girders are uniformly and fixedly arranged outside the inner ring, the length of the extension girders is shorter than that of the edge girders, two ends of the edge girders are respectively connected with the extension girders and the concrete foundation of the inner ring, and grooves for accommodating the edge girders and the edge secondary girders are formed inside the top end of the concrete foundation.
Description
Technical Field
The invention relates to the field of foundation pit pile anchor support, in particular to an assembled steel structure roof and a splicing construction method thereof.
Background
At present, in some large-scale public constructional engineering, the special appearance is frequently met, the hollow building in the interior is large in space and transparent up and down, and in consideration of the large span of the roof structure and lighting requirements, the steel structure lighting glass roof is generally designed. The steel structure of the roof has simple appearance, but the hollow height and the area of the roof are relatively high because the steel structure is positioned at the inner top of a building, and the steel structure of the roof has heavy weight and conceivable installation difficulty. When the roof of the engineering steel structure is installed, as large hoisting equipment cannot enter indoor hoisting, the hoisting of the indoor tower crane is set, and the dismantling of the tower crane is a difficult problem, and the common construction methods of the large-span steel structure such as integral hoisting (jacking), integral hoisting, sliding method construction and the like are not suitable for the engineering, and the construction methods of full-hall scaffolds, sectional hoisting and high-altitude assembly are suitable, but the integral hoisting of the steel structure is difficult, the input amount of turnover materials is very large, and the integral construction period is longer. The high-large assembled steel structure roof is widely applied to large-scale public building engineering, but the existing high-large roof steel structure construction has the problems of large self weight of steel members, difficult hoisting, large turnover material input amount, long construction period, difficult installation and maintenance, high cost and the like. Therefore, the design of the high and large roof steel structure with simple structure, convenient installation and maintenance, less turnover material investment and short construction period and the assembly construction method thereof have important practical significance.
Disclosure of Invention
The invention aims to solve the problems of high self weight of steel members, difficult lifting, large turnover material input, long construction period, difficult installation and maintenance, high cost and the like in the conventional construction of an assembled steel structure roof, and provides an assembled steel structure roof and a assembling construction method thereof, wherein the assembled steel structure roof is simple in structure, convenient to install and maintain, less in turnover material input and short in construction period.
The steel structure roof comprises a concrete foundation formed by combining a plurality of upright posts and circular ring beams and a steel structure roof body detachably connected to the concrete foundation, wherein the steel structure roof body comprises an inner ring in the middle, a plurality of edge girders uniformly distributed on the periphery of the inner ring, a plurality of arc girders detachably arranged between the two edge girders, edge secondary girders with two ends detachably connected with the arc girders and the concrete foundation respectively, and a plurality of arc secondary girders detachably arranged between the edge secondary girders and the edge girders, a plurality of extension girders with the same number as the edge girders are uniformly and fixedly arranged outside the inner ring, the length of the extension girders is shorter than that of the edge girders, two ends of the edge girders are respectively connected with the extension girders and the concrete foundation of the inner ring, and grooves for accommodating the edge girders and the edge secondary girders are formed in the inner side of the top end of the concrete foundation.
Preferably, the inner ring is provided with a cross beam to strengthen the structural strength and rigidity, the upper end surfaces of the cross Liang Liangbei are respectively provided with lifting bolts symmetrically distributed along the width direction, and the lifting bolts are U-shaped.
Preferably, the main bodies of the extending beam, the edge main beam, the arc main beam, the edge secondary beam and the arc secondary beam of the inner core ring are I-beams.
Preferably, the inner ring is connected with the edge girder, the edge girder is connected with the arc girder, the edge girder is connected with the edge secondary girder, the arc girder is connected with the edge secondary girder, and the arc secondary girder is connected with the edge secondary girder by adopting the same screw thread, and the connecting I-beam webs are connected by utilizing the mounting plate, the high-strength bolts, the gaskets and the nuts.
Preferably, through holes on the longitudinal plates at the joints of the two ends of the arc-shaped main beams and the adjacent edge main beams and on the mounting plates at the joints of the extending beams in the middle of the arc-shaped main beams and the edge secondary beams are distributed in 9 rows and 2 columns, and the diameter of each through hole is 1-2mm larger than that of each high-strength bolt.
Preferably, the connecting parts of the edge girders and the inner ring extension girders, the connecting parts of the edge girders and the arc girders and the connecting parts of the edge girders and the arc secondary girders are distributed in 9 rows and 2 columns, the through holes on the bottom plate of the connecting parts of the edge girders and the concrete foundation are distributed in 4 rows and 4 columns, 4 rows and 2 columns are respectively arranged on two sides of the width direction of the edge girders, the diameter of the through holes is 1-2mm larger than that of the high-strength bolts, the number of the arc girders is 8, the through holes on the connecting parts of two ends of the arc girders and the adjacent edge girders and the connecting parts of the arc girders and the arc secondary girders are distributed in 9 rows and 2 columns, and the diameter of the through holes is 1-2mm larger than that of the high-strength bolts.
Preferably, the number of arc-shaped main beams is 8, the number of edge secondary beams is 8, and the number of arc-shaped secondary beams is 16.
Preferably, the connection part of the groove of the concrete foundation, the edge main beam and the edge secondary beam is provided with a pre-buried steel plate.
Preferably, through holes which are distributed the same as the connection parts of the edge main beams and the concrete foundation are formed in the embedded steel plates, threads are formed at the upper ends of the embedded bolts and extend out of the upper parts of the embedded steel plates, hooks are arranged below the embedded steel plates, and the embedded steel plates are fixed in the concrete foundation.
The assembly construction method of the assembled steel structure roof comprises the following steps:
s1, pulling an inner core ring integral member to the center of a bottom layer of a hall, and simultaneously conveying an edge secondary beam, an arc-shaped main beam, an edge main beam and an arc-shaped secondary beam to a to-be-lifted area of a main body structure;
S2, erecting a lattice column support in the inner coil integral member, symmetrically installing four chain blocks on a cross beam at the top of the support, and installing eye bolts on the inner coil integral member;
S3, four chain blocks are symmetrically arranged at the top of the lattice column support, the whole inner ring component is pulled to a preset height, and the whole inner ring component is temporarily fixed by welding brackets;
S4, mounting a mast crane on the lattice column support, wherein the mast crane is supported by a single rod, and a lifting point of the mast crane is arranged near the mounting center position of the edge girder;
s5, hoisting and temporarily fixing four edge girders to control the overall installation dimensional deviation of a roof system, and then installing the other four edge girders in the same step;
S6, correcting positions of the installed 8 edge main beams, and fastening the main beams through high-strength bolts after confirmation;
s7, hoisting the rest arc main beams, the edge secondary beams and the arc secondary beams in place, and assembling and connecting the arc main beams, the edge secondary beams and the arc secondary beams by high-strength bolts;
and S8, removing the lower lattice column support.
The invention has the following beneficial effects:
1. Compared with the existing fabricated steel structure roof, the self-weight is lighter, the cross section of the member is smaller, the I-steel is adopted as the steel structure main body, the pollution of wastes to the environment is reduced, the material is a green recyclable building material, the ecological environment protection requirement is met, and the current environment protection situation is met.
2. The assembled steel structure roof adopts factory prefabrication and field combination, improves the assembly precision and welding quality of components, and prevents the common quality of field steel component welding.
3. The assembled steel structure roof has the advantages of short construction period, difficult installation and maintenance and low cost.
4. The assembly construction method of the assembled steel structure roof has the advantages of simple installation of hoisting equipment and small input amount of turnover materials, and can be recycled for a plurality of times.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
FIG. 1 is a schematic view of the assembled steel structure roof of the present invention;
FIG. 2 is a schematic view of a steel structure roofing body of the present invention;
FIG. 3 is a schematic view of the inner race and edge girder assembly of the present invention;
FIG. 4 is a schematic view of the connection of the edge girders to the extension girders according to the present invention;
FIG. 5 is a schematic view of the assembly of the edge girders, edge sub-girders, arc girders, and arc sub-girders of the present invention;
FIG. 6 is a schematic view of the installation of the edge girders with a concrete foundation according to the present invention;
FIG. 7 is a schematic view of the installation of the edge girders with a concrete foundation according to the present invention;
FIG. 8 is a schematic view of an eye bolt and inner race installation of the present invention;
fig. 9 is a schematic view of the inner race of the lattice column stand of the present invention.
In the figure, 1, a concrete foundation, 2, an edge secondary beam, 3, an arc-shaped main beam, 4, an edge main beam, 5, an arc-shaped secondary beam, 6, an inner ring, 7, an eye bolt, 8, an eye gasket, 9, an eye nut, 10, a nut, 11, a mounting plate, 12, a high-strength bolt, 13, a gasket, 14, an embedded steel plate, 15, an embedded bolt, 16, a cross beam, 17, a chain block, 18, a lattice column upright, 19, a bracket, 20, a bottom plate, 21 and a bottom plate bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Please refer to fig. 1-9;
1. in order to reduce the number of the types of the parts and the installation difficulty of the structure, all the threaded connections in the structure adopt the same specification, including tooth type, pitch diameter, large diameter, small diameter, lead, line number, rotation direction and the like, and the length of the threads is determined according to the structural requirements.
2. The inner core ring 6 and the edge girder 4, the edge girder 4 and the arc girder 3, the edge girder 4 and the edge secondary girder 2, the arc girder 3 and the edge secondary girder 2, the arc secondary girder 5 and the edge secondary girder 2 are all connected by adopting the same threaded connection scheme, the mounting plates 11 are clamped on two sides of the web of the I-beam to be connected, and the longitudinal mounting plates 11, the high-strength bolts 12, the gaskets 13 and the nuts 10 are utilized for connection.
3. A plurality of extension beams are arranged on the periphery of the inner core ring 6. The edge girder 4 is connected with the inner coil 6 through an extension girder of the inner coil 6. A plurality of evenly distributed through holes with diameters matched with the diameters of the high-strength bolts 12 are arranged on the extension beam of the inner core ring 6 near the joint with the edge main beam 4. In the embodiment, the number of the extending beams of the inner coil 6 is 8, the through holes on the extending beams of the inner coil 6, which are close to the joint with the edge main beam 4, are uniformly distributed in 9 rows and 2 columns, and the diameter of the through holes is 1-2mm larger than that of the high-strength bolts.
4. Inside the inner race 6 is a crisscross beam to enhance structural strength and rigidity. Through holes symmetrically distributed in the width direction are formed in the 4 beam arms of the crisscross beam and are used for installing the eye bolts 7. The eye bolt 7 has a U-shaped structure. During installation, the lifting bolt 7 is respectively inserted into through holes distributed on 4 beam arms of the crossed beam 6 of the inner race from the top, and the lifting ring gaskets 8 and 2 lifting ring nuts 9 are respectively arranged from the bottom upwards, so that the locking of threaded connection is realized.
5. The main body of the edge main beam 4 is an I-beam. One end of the edge girder 4 is connected with an extension girder of the inner core ring 6, and the other end is connected with the concrete foundation 1. The middle of the edge girder 4 is provided with a longitudinal mounting plate 11 at the joint of the arc girder 3 and the arc secondary girder 5, so that the edge girder 4 is respectively connected with the arc girder 3 and the arc secondary girder 5. The edge girder 4 is provided with a plurality of evenly distributed through holes with the diameter matched with the diameter of the high-strength bolts 12 at the joint of the outer extending girder of the inner center ring 6, the joint of the outer extending girder of the inner center ring and the arc secondary girder 5, the longitudinal mounting plate 11 at the joint of the outer extending girder of the inner extending girder and the arc secondary girder 5, and the floor at the joint of the outer extending girder and the concrete foundation 1. In the embodiment, the number of the edge girders is 8, the connection parts of the edge girders 4 and the inner ring 6 and the extension girders, the connection parts of the edge girders 4 and the arc girders 3 and the through holes on the longitudinal mounting plates 11 of the connection parts of the edge girders 4 and the arc secondary girders 5 are distributed in 9 rows and 2 columns, the through holes on the embedded steel plates 14 of the connection parts of the edge girders 4 and the concrete foundation 1 are distributed in 4 rows and 4 columns, 4 rows and 2 columns are respectively arranged on two sides of the width direction of the edge girders 4, and the diameter of the through holes is 1-2mm larger than that of the high-strength bolts 12.
6. The main body of the arc-shaped main beam 3 adopts and bending the I-beam. The two ends of the arc-shaped main beams 3 are respectively connected with the adjacent edge main beams 4, and an extension beam is arranged in the middle so as to facilitate the connection of the edge secondary beams 2. And a plurality of uniformly distributed through holes with diameters matched with the diameters of the high-strength bolts 12 are formed in the longitudinal mounting plates 11 at the connection positions of the two ends of the arc-shaped main beams 3 and the adjacent edge main beams 4 and the longitudinal mounting plates 11 at the connection positions of the extending beams in the middle of the arc-shaped main beams 3 and the edge secondary beams 2. In the embodiment, the number of the arc-shaped main beams 3 is 8, through holes on the longitudinal mounting plates 11 at the joint of the two ends of the arc-shaped main beams 3 and the adjacent edge main beams 4 and on the longitudinal mounting plates 11 at the joint of the extending beam in the middle of the arc-shaped main beams 3 and the edge secondary beams 2 are distributed in 9 rows and 2 columns, and the diameter of the through holes is 1-2mm larger than that of the high-strength bolts 12.
7. The main body of the edge secondary beam 2 is an I-beam. One end of the edge secondary beam 2 is connected with an extension beam of the arc-shaped main beam 3, and the other end is connected with the concrete foundation 1. The connection part between the middle of the edge sub beam 2 and the arc sub beam 5 is provided with a longitudinal mounting plate 11, so that the edge sub beam 2 is connected with the arc sub beam 5. The edge secondary beams 2 are provided with a plurality of through holes with the diameters matched with the diameters of the high-strength bolts 12, wherein the through holes are uniformly distributed on the connection part of the edge secondary beams and the extension beam of the arc-shaped main beams 3, the longitudinal mounting plates 11 of the connection part of the edge secondary beams 5 and the embedded steel plates 14 of the connection part of the edge secondary beams and the concrete foundation 1. In the embodiment, the number of the edge secondary beams 2 is 8, the through holes on the longitudinal mounting plates 11 at the joints of the edge secondary beams 2 and the arc-shaped main beams 3 and at the joints of the edge secondary beams 2 and the arc-shaped secondary beams 5 are distributed in 9 rows and 2 columns, the through holes at the joints of the edge secondary beams 2 and the concrete foundation 1 are distributed in the same manner as the through holes at the joints of the edge main beams 4 and the concrete foundation 1, the embedded steel plates 14 are distributed in 4 rows and 4 columns, 4 rows and 2 columns are respectively arranged at two sides in the width direction of the edge secondary beams 2, and the diameter of the through holes is 1-2mm larger than that of the high-strength bolts 12.
8. The main body of the arc secondary beam 5 is obtained by adopting I-beam bending processing. The two ends of the arc-shaped secondary beam 5 are respectively connected with the adjacent edge main beam 4 and the edge secondary beam 2. And a plurality of uniformly distributed through holes with diameters matched with the diameters of the high-strength bolts 12 are respectively arranged on the longitudinal mounting plates 11 at the joint of the two ends of the arc-shaped main beam 3 and the adjacent edge main beams 4 and the edge secondary beams 2. In the embodiment, the number of the arc-shaped secondary beams 5 is 16, through holes on the longitudinal mounting plates 11 at the joint of two ends of the arc-shaped secondary beams 5 and the adjacent edge main beams 4 and the edge secondary beams 2 are distributed in 9 rows and 2 columns, and the diameter of the through holes is 1-2mm larger than that of the high-strength bolts 12.
9. The embedded steel plate 14 is provided with through holes which are distributed identically to the joint of the edge girder 4 and the concrete foundation 1, taper holes are processed on the lower side of the through holes, and the diameter of the through holes is identical to the optical axis part of the embedded bolts 15. During manufacturing, each embedded bolt 15 is inserted into a through hole in the embedded steel plate 14, the tail of the embedded bolt 15 is on the same side as a taper hole in the embedded steel plate 14, and the embedded bolt 15 and the embedded steel plate 14 are firmly welded. Before the concrete foundation 1 is poured, the welded embedded steel plates 14 and the embedded bolts 15 are embedded into the concrete foundation 1.
10. The lattice column support consists of a bottom plate 20, a bottom plate bolt 21, lattice column posts 18, I-steel beams 16 and chain blocks 17. The number of lattice column columns 18, I-steel beams 16 and chain blocks 17 is 4, and the lattice column columns, the I-steel beams and the chain blocks are uniformly distributed. The bottom plate 20 is provided with a plurality of through holes with the same diameter of the bottom plate bolts 21, taper holes are processed at the lower sides of the through holes, and each bottom plate bolt 21 is firmly welded after being inserted into a corresponding hole on the bottom plate 20. During civil engineering, the bottom plate 20 welded with the bottom plate bolts 21 is pre-buried in the concrete foundation 1 according to the installation position of the inner core ring 6, and the top surface of the bottom plate 20 is ensured to be horizontal. The lattice column upright 18, the I-steel beam 16 and the chain block 17 are prepared before construction and are installed during construction.
11. The lattice column upright 18 is formed by welding steel pipes, angle steel and plates. The left and right sides of the lattice column upright 18 in the height direction are composed of 2 upright steel pipes, 2 horizontally placed steel pipes are welded near the bottom and the top, the pipe diameter is the same as that of the upright steel pipes, the middle section part is formed by welding angle steel, and the middle section part comprises a cross rod and diagonal rods, so that the structural rigidity and the strength are enhanced, and meanwhile, the cross rod can be used for installing a scaffold. The number and location of the middle section rails and diagonal braces are determined by the height of the lattice column posts 18. The bottoms of 2 upright steel pipes on the left side and the right side of the lattice column upright 18 are respectively welded with 4 triangular plates uniformly distributed along the circumference and used as reinforcing ribs for increasing the structural strength and rigidity.
12. During assembly construction, the inner coil 6 is placed on the bottom plate 20, the posture and the position of the inner coil 6 are adjusted according to the installation requirement, meanwhile, other edge main beams 4, edge secondary beams 2, arc main beams 3 and arc secondary beams 5 are conveyed to a to-be-hung area of a main body structure, and lattice column columns 18, I-steel cross beams 16 and chain blocks 17 which are components of a lattice column support are conveyed to the inner coil 6. Then, the lattice column support is installed, 4 lattice column columns 18 are sequentially inserted into 4 through holes in the inner core ring 6 and uniformly distributed along the circumference, the bottoms of the lattice column columns 18 are welded on the bottom plate 20, the adjacent 2 lattice column columns 18 are welded firmly by the I-steel cross beams 16, and the chain block 17 is installed on each I-steel cross beam 16. And then the lifting ropes of the chain blocks 17 are sequentially sleeved on the 4 lifting bolts 7 correspondingly arranged on the inner coil 6, after the chain blocks 17 are started to adjust the height and the posture of the inner coil 6 to enable the inner coil 6 to be positioned at the target installation position, temporary brackets 19 are welded on the lattice column support and at the contact position of the bottom of the inner coil 6 so as to temporarily fix the inner coil 6. After the inner core ring 6 is temporarily fixed, a mast crane is installed on the lattice column support, and 8 edge main beams 4 are sequentially hoisted by the mast crane. Every time 1 edge girder 4 is hoisted, temporary fixing is performed first so as to control the overall installation dimension deviation. And (5) carrying out position correction after the 8 edge girders 4 are in place. After the position is confirmed, 8 edge girders 4 and the concrete foundation 1 are fastened by using gaskets 13 and nuts 10, and high-strength threaded fastening between the edge girders 4 and the inner core ring 6 is realized by using webs 11, high-strength bolts 12, gaskets 13 and nuts 10. After the 8 edge main beams 4 are fastened, the 8 arc main beams 3, the 8 edge secondary beams 2 and the 16 arc secondary beams 5 are sequentially installed. After the integral roof steel structure is installed, the temporary bracket 19, the chain block 17, the I-steel beam 16 and the lattice column upright 18 are removed in sequence.
The concrete construction key points are as follows:
(1) Lattice column support base mounting and lower concrete structure reinforcement
The bottom of the lattice column support base is 4000×4000 with 30 thick steel plates, the lower part of the steel plates is paved with C30 fine stone concrete leveling steel plates at the horizontal clearance between the leveling layer and the floor, so that the stress is uniform, 8 lattice column columns 18 are additionally arranged under the floor except for phi 900 core columns to ensure the hoisting safety of the inner frame, 8 phi 159×6 horizontal supports and diagonal braces are adopted for the steel lattice frame to be connected into a lattice body, the steel pipe lower cushion steel plates are 400×400×20 steel plates at the corresponding positions with the rods of the upper hanging frame system.
(2) Positioning of integral member of inner ring of roof
The whole member of the inner core ring 6 is paved with two steel beams by paving an inclined channel, paving the steel beams with 20 channel steel and 4 pieces of 6m through length, paving the steel beams on a concrete inclined ramp (comprising the concrete inclined ramp to an indoor central area) instead of a track, and dragging the steel beams to a preset position by using a steel wire rope and a 3-ton winch.
(3) Lattice column support mounting
The lattice column support is installed inside the integral inner ring member, so that the integral inner ring member 6 can be pulled after the lattice column support is installed.
The lattice column support hanging frame adopts phi 159 multiplied by 6, the joint is needed for the single length of the phi 159 multiplied by 6 pipe, the joint stagger is more than or equal to 2000m, 4 single pipes are firstly manufactured, then sixty tons of tower cranes are used for matching and installing, an annular scaffold is erected on the outer side of a core barrel, the upper part of the lattice column support hanging frame is butted on the scaffold by two joints, and concentric circles are required to be ensured for butting the phi 159 multiplied by 6 main vertical rods, and the lattice column support hanging frame is reinforced in a segmented mode.
The four groups of the double-branch phi 159 multiplied by 6 vertical rods are vertically equidistantly arranged, and the middle part of the double-branch phi 159 multiplied by 6 vertical rods can pass through the arc outwards-protruding flange plate interval of the integral component of the inner core ring 6. And each side of the regular polygon formed by the phi 159 multiplied by 6 steel pipes is in cross connection with the high shear support. The top closing plane uses 125I-steel as a cross beam, and is placed at the top of the end part of the steel pipe and welded.
The installation of the phi 159 x 6 lattice column support system for supporting the integral component of the inner core ring 6 is to install from bottom to top section by section, a phi 48 x 3 steel pipe double-row scaffold is built around in advance, the horizontal distance is 1500mm, the step distance is 2000mm, a row of scaffolds is built from the built central point of the scaffold to the radius of 1.5m outwards, and a row of circular scaffolds is built outside the phi 108 upright rod for installation and support and upright rod connection. Along with the rising of the support frame, the scaffold rises in advance to ensure the installation and the use.
The phi 159 multiplied by 6 pipe and the pipe joint are welded by electric welding and are concentrically connected, so that the welding quality is ensured, the whole stress is consistent, the pipe hoisting is vertically hoisted by a 60-ton tower crane used for the construction of a main body structure, and the pipe hoisting is matched with the supporting installation. And the horizontal and shearing cable-stayed supports between the vertical rods are temporarily fixed at any time.
(4) Lifting and traction of integral inner core ring component
After the lattice column bracket is installed, 4 hanging points are symmetrically arranged on the whole 6 body members of the inner core ring, and four-point average upward traction is manually carried out through 4 5T chain blocks 17 hung on 4I-steel beams 16 at the top of the bracket. When the traction is started, when the component is lifted up to be 200mm away from the ground, the working conditions of all parts are comprehensively observed, and after all the parts are inspected, the components are gradually lifted up after no problem is found. In the upward movement process, the level of the workpiece must be checked at any time, so that serious safety accidents are prevented from happening due to the fact that a single hoist is overweight and is unstably stressed when a member is inclined. The levelness measurement is carried out here, which specifies that when the height in a certain direction is not less than 50mm, the upward traction should be stopped, and the leveling should be corrected from the other three upward traction. The ideal lifting effect is achieved by continuously pulling and ensuring the horizontal of the workpiece and average force application.
Because the installation height of the component is relatively high, the component must be lifted in sections for a plurality of times, each liter is required to be provided with a bracket supporting component conversion hanging layer on two sides of phi 159 multiplied by 6, and each bracket is required to be provided with a stiffening plate under the bracket to ensure that the load of the component is borne. And simultaneously, the steel wire rope ring members with the same thickness are locked by a lock catch for a circle and fixed with the upper steel beam. After the upper 5 tons of hoisting hoist guy ropes are reset and lifted to the fixed steel wire ropes without stress, the stable steel wire ropes and the brackets 19 are removed, and the fixed steel wire ropes are lifted along with the components. The inner race 6 is reciprocally lifted once by three to four meters. After the hoisting of the integral member of the inner race 6 is completed, temporary fixation should be performed so that the rest of the steel beams are installed.
(5) Mast crane on lattice column support and top temporary lifting point installation
After the integral component of the inner core ring 6 is hoisted in place, a mast crane is arranged on the lattice column support, the mast crane adopts phi 108 multiplied by 4 single inclined vertical rods, the inclined vertical rod support legs are connected with the main vertical rods of the lattice column support by adopting anchor ears, and the upper ends of the mast crane inclined vertical rods are fixedly tied with the lattice column support through double steel wire ropes. The mast crane is hoisted in a mode of pulley and steel wire rope, the diameter of the steel wire rope is 17mm, and the steel wire rope is pulled by a winch.
The top of the lattice column bracket adopts double-spliced phi 108 multiplied by 4 steel pipe shoulder pole type hanging points as temporary hanging points at the beam ends during the hoisting of the steel main beams. The double-spliced steel pipe is connected with the top cross beam 16 of the lattice column support by using a bolt fastener, so that the stability of a hanging point is ensured.
(6) Hoisting edge girder
And a lifting lug is arranged at the gravity center of the edge girder 4, the girder is lifted by a mast crane, when the component is lifted 200mm away from the ground during lifting, the working conditions of all parts are comprehensively observed, and the girder is slowly lifted after all the parts are inspected and no problem is found. The two ends of the edge girder 4 are pulled by ropes matched with special persons to prevent the girder from swinging. And after the edge main beam 4 is hoisted to a certain height, the beam is installed by matching with temporary hoisting points at the two ends of the beam. During hoisting, the four through edge main beams 4 are hoisted and lifted to the position where the elevation of the integral component of the inner coil 6 is located in sequence, the web plate and the temporary fixing bolts are adopted to be in butt joint temporary fixation with the integral component of the inner coil 6, and then the other four edge main beams 4 are installed in the same step.
After the edge girder 4 is installed, the installed 8 edge girders 4 are measured in terms of position height, center position, slope, arched part, and the elevation of the connecting stud between the girders and the main body, and after repeated correction and confirmation, the temporary bolts are replaced by high-strength bolts 12, and primary screwing, middle screwing and final screwing are performed. And welding and pulling the flange of the steel beam from bottom to top, so that the whole steel structure daylighting roof forms a complete stable rigid system.
(7) Hoisting arc main beams and edge secondary beams
The arc main beams 3, the edge secondary beams 2 and the arc secondary beams 5 are hoisted by using a tower crane, and are assembled and connected by using high-strength bolts 12 by matching with a chain block 17. After all the components are installed, fireproof and antirust paint spraying is carried out on the components.
(8) Lattice column support removal
The lattice column support is removed along with the layer along with the descending of the support system, the phi 159 multiplied by 6 support system is removed according to a section of 6-8m, the welded joint position is cut off by C2H2-O2 gas cutting, the framework is lifted into small pieces (less than or equal to 1000 kg) by a tower crane, and then the framework falls on a 2-layer indoor ground wooden pillow to be cleared outwards, and the framework is removed circularly downwards. The dismantling process is to send a special person to conduct and the special person to monitor, when the upper part does not work, the lower part is used for clearing the steel pipe frame. Meanwhile, the falling work of the fireproof and anti-falling component is well done.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. The assembled steel structure roof is characterized by comprising a concrete foundation (1) and steel structure roof bodies which are detachably connected to the concrete foundation (1), wherein the steel structure roof bodies comprise inner rings (6) which are arranged in the middle, a plurality of edge girders (4) which are uniformly distributed on the periphery of the inner rings (6), a plurality of arc girders (3) which are detachably arranged between the two edge girders (4), edge secondary girders (2) with two ends which are detachably connected with the arc girders (3) and the concrete foundation (1) respectively, and a plurality of arc secondary girders (5) which are detachably arranged between the edge secondary girders (2) and the edge girders (4), a plurality of extension girders which are the same as the edge girders (4) are uniformly and fixedly arranged outside the inner rings (6), the lengths of the extension girders are shorter than those of the edge girders (4), two ends of the arc girders (3) are respectively connected with the adjacent edge girders (4), the middle is provided with the extension girders so that the edge secondary girders (2) are connected with the edge girders (3), and the top ends of the edge girders (4) are respectively connected with the inner side girders (1) of the edge girders (4), and the top ends of the concrete foundation (1) are respectively provided with grooves.
2. The assembled steel structure roof according to claim 1 is characterized in that the inner core ring (6) is provided with a crisscross beam for reinforcing structural strength and rigidity, lifting bolts (7) symmetrically distributed in the width direction are arranged on the upper end faces of the crisscross Liang Liangbei, and the lifting bolts (7) are U-shaped.
3. The assembled steel structure roof according to claim 1, wherein the main bodies of the extending beam, the edge main beam (4), the arc main beam (3), the edge secondary beam (2) and the arc secondary beam (5) of the inner core ring (6) are I-beams.
4. The assembled steel structure roof according to claim 3, wherein the inner core ring (6) is connected with the edge girder (4), the edge girder (4) is connected with the arc girder (3), the arc girder (3) is connected with the edge secondary girder (2) through the same screw threads, and the connecting I-shaped girder webs are connected through the mounting plate (11), the high-strength bolts (12), the gaskets (13) and the nuts (10).
5. The fabricated steel structure roof according to claim 4, wherein through holes on the longitudinal plates at the joint of two ends of the arc-shaped main beam (3) and the adjacent edge main beams (4) and on the mounting plate (11) at the joint of the middle extension beam of the arc-shaped main beam (3) and the edge secondary beam (2) are distributed in 9 rows and 2 columns, and the diameter of the through holes is 1-2mm larger than that of the high-strength bolts (12).
6. The assembled steel structure roof of claim 5, wherein the connecting parts of the edge girders (4) and the inner rings (6) are connected, the connecting parts of the edge girders (4) and the arc girders (3) are distributed in 9 rows and 2 columns, the connecting parts of the edge girders (4) and the arc secondary girders (5) are distributed in 4 rows and 4 columns, the connecting parts of the edge girders (4) and the concrete foundation (1) are respectively provided with 4 rows and 2 columns along the two sides of the width direction of the edge girders (4), the diameter of the through holes is 1-2mm larger than the diameter of the high-strength bolts (12), the number of the arc girders (3) is 8, the connecting parts of the two ends of the arc girders (3) and the adjacent edge girders (4) are distributed in 9 rows and 2 columns, and the diameter of the through holes on the connecting parts of the middle of the arc girders (3) and the edge secondary girders (2) are 1-2mm larger than the diameter of the high-strength bolts (12).
7. An assembled steel structure roof according to claim 1, characterized in that the number of arc-shaped main beams (3) is 8, the number of edge main beams (4) is 8, the number of edge sub-beams (2) is 8, and the number of arc-shaped sub-beams (5) is 16.
8. The fabricated steel structure roof as claimed in claim 3, wherein the connection between the groove of the concrete foundation (1) and the edge main beams (4) and the edge secondary beams (2) is provided with pre-buried steel plates (14).
9. The assembled steel structure roof of claim 5, wherein through holes which are distributed identically to the connection parts of the edge main beams (4) and the concrete foundation (1) are formed in the embedded steel plates (14), threads are formed at the upper ends of the embedded bolts (15) and extend out of the upper parts of the embedded steel plates (14), hooks are arranged below the embedded bolts, and the embedded steel structures are fixed in the concrete foundation (1).
10. A method of assembling a fabricated steel structure roof, based on any one of the preceding claims 1-9, characterized by the steps of:
S1, an integral component of an inner core ring (6) is pulled to the center part of a bottom layer of a hall, and meanwhile, an edge secondary beam (2), an arc-shaped main beam (3), an edge main beam (4) and an arc-shaped secondary beam (5) are conveyed to a to-be-lifted area of a main structure;
s2, erecting a lattice column support in an integral component of the inner coil (6), symmetrically installing four chain blocks (17) on a cross beam (16) at the top of the support, and installing an eye bolt (7) on the integral component of the inner coil (6);
S3, four chain blocks (17) are symmetrically arranged at the top of the lattice column support, the integral component of the inner core ring (6) is pulled to a preset height, and the integral component is temporarily fixed by welding brackets (19);
s4, mounting a mast crane on the lattice column support, wherein the mast crane is supported by a single rod, and a lifting point of the mast crane is arranged near the mounting center position of the edge girder (4);
s5, hoisting and temporarily fixing the four edge main beams (4) to control the overall installation dimensional deviation of the roof system, and then installing the other four edge main beams (4) in the same step;
S6, carrying out position correction on the installed 8 edge main beams (4), and fastening through high-strength bolts (12) after confirmation;
s7, lifting the rest arc main beams (3), the edge secondary beams (2) and the arc secondary beams (5) in place, and splicing and connecting the high-strength bolts (12);
and S8, removing the lower lattice column support.
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| CN113216395B (en) * | 2021-05-21 | 2022-08-05 | 中建科工集团有限公司 | Steel pipe intersection connecting device and installation method |
| CN115405106A (en) * | 2021-05-28 | 2022-11-29 | 中国核工业二三建设有限公司 | Method for fixing first framework of nuclear power drum filter screen |
| CN115717449B (en) * | 2022-11-24 | 2023-11-07 | 中国建筑设计研究院有限公司 | Reinforced concrete combined shell system and construction method thereof |
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