CN111927107A - Steel structure roof truss sliding construction method - Google Patents
Steel structure roof truss sliding construction method Download PDFInfo
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- CN111927107A CN111927107A CN202010752109.6A CN202010752109A CN111927107A CN 111927107 A CN111927107 A CN 111927107A CN 202010752109 A CN202010752109 A CN 202010752109A CN 111927107 A CN111927107 A CN 111927107A
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- truss
- sliding
- steel structure
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- sliding rail
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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- 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
- E04G21/163—Jacks specially adapted for working-up building elements
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- Civil Engineering (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application relates to a steel structure roof truss sliding construction method, which comprises the following steps: the method comprises the following steps: installing a midspan support frame and a sliding rail in a building main body; step two: installing a scaffold construction platform; step three: hoisting the truss to a scaffold construction platform to enable the truss to be matched with the sliding rail in a sliding manner; step four: installing a pusher, and pushing the support mechanism by the pusher to enable the truss to slide to a temporary stop position; step five: hoisting the rear truss to a scaffold construction platform, connecting the front truss with the rear truss, and pushing to a temporary stop position; step six: repeating the fifth step to enable all the trusses to reach the preset installation positions; step seven: unloading the truss through an unloading mechanism, and disassembling the support frame to complete the construction of the steel structure roof truss; the application has the advantages of more accurate control of the movement of the truss and reduction of the construction difficulty.
Description
Technical Field
The application relates to the field of steel structure roof trusses, in particular to a steel structure roof truss sliding construction method.
Background
Nowadays, large buildings, such as gymnasiums and exhibition halls, are generally provided with steel frame building models at the periphery, for example, roof trusses at the upper part of the gymnasium are provided with steel truss structures, so that the visual field space can be enlarged, and the space in the gymnasium is larger; when the steel structure roof truss is installed, the steel structure roof truss is sometimes divided into a plurality of trusses according to actual field conditions, large equipment is adopted to hoist the trusses, and after the trusses reach a preset position, the trusses are installed and fixed to form the steel structure roof.
To the correlation technique among the above-mentioned, the inventor thinks, the span of truss is big, and the region of assembling in the scene reduces along with the construction progress gradually moreover, if only adopt the mode of hoist and mount directly with the truss hoist and mount to preset position, hoisting equipment will be difficult to the removal of accurate control truss to make the construction degree of difficulty big, the risk of construction also can increase.
Disclosure of Invention
In order to control the movement of the truss more accurately and reduce the construction difficulty, the application provides a steel structure roof truss sliding construction method.
The application provides a steel structure roof truss sliding construction method adopts following technical scheme:
a steel structure roof truss sliding construction method comprises the following steps:
the method comprises the following steps: installing a midspan support frame in a building main body, installing sliding rails for connecting a truss in a sliding manner on two sides of the building main body and above the midspan support frame, wherein the sliding rails respectively correspond to the left end, the right end and the middle part of the truss;
step two: installing scaffold construction platforms at positions close to the starting ends of the sliding rails on the midspan support frame and the two sides of the building body;
step three: hoisting the truss to the scaffold construction platform through hoisting equipment, adjusting the position, and moving the truss to the sliding rail, wherein the truss is in sliding fit with the sliding rail under the cooperation of a supporting mechanism and an unloading mechanism;
step four: installing an ejector on the sliding rail, wherein the ejector pushes the support mechanism to enable the truss to slide to a temporary stop position;
step five: hoisting the latter truss to the scaffold construction platform through hoisting equipment, installing a connecting rod between the former truss and the latter truss, and pushing the latter truss to a temporary stop position through the ejector;
step six: repeating the fifth step, completing the assembly, connection and sliding of the rest trusses until all trusses reach the preset installation position;
step seven: and unloading the truss through the unloading mechanism, fixing the truss and two sides of the building main body, and disassembling the midspan support frame, the sliding rail and the scaffold construction platform to complete the sliding construction of the steel structure roof truss.
By adopting the technical scheme, the trusses slide to the preset installation positions through the sliding rails, compared with the original method that the trusses are directly hoisted to the preset installation positions through the hoisting equipment, the moving process of the trusses is more controllable, the moving accuracy of the trusses is improved under the guiding action of the sliding rails, the construction difficulty is reduced, and meanwhile, the method that the trusses are assembled while sliding is adopted, so that the trusses can synchronously move, and the speed of installing the trusses is improved.
Preferably, in the third step and the fifth step, the truss comprises a left assembly unit, a middle assembly unit and a right assembly unit, wherein the left assembly unit, the middle assembly unit and the right assembly unit are hoisted to the scaffold construction platform through hoisting equipment, and the truss is assembled under the cooperation of the hoisting equipment and manpower.
By adopting the technical scheme, the truss is split into the plurality of assembling units, so that the weight and the volume of the truss during hoisting are reduced, the difficulty of hoisting the truss to the scaffold construction platform by the hoisting equipment is reduced, and the construction efficiency is further improved.
Preferably, in the fourth step, the supporting mechanism is connected to the supporting column of the truss, the supporting mechanism includes fixing tables symmetrically arranged on two sides of the supporting column and fixing columns arranged at one ends of the fixing tables far away from the supporting column and connected with the sliding rail in a sliding manner, a reinforcing column is arranged between the fixing tables and the supporting column, a gap is reserved between the supporting column and the sliding rail, the pushing device is a hydraulic cylinder, and the tail end of a piston rod of the hydraulic cylinder is connected with the fixing table close to the pushing device.
Through adopting above-mentioned technical scheme, the fixed column slides with the rail that slides and is connected, realizes sliding of truss to the symmetry setting of fixed station and fixed column can improve the stability that the truss slided.
Preferably, the sliding rails located on two sides of the building main body are composed of a plurality of first sliding rails and a plurality of second sliding rails, the first sliding rails and the second sliding rails are arranged at intervals, the position of the second sliding rails corresponds to the preset installation position of the supporting column, in the seventh step, when the truss is unloaded, the second sliding rails on the building main body are firstly disassembled and replaced into the truss base, the supporting column and the truss base are fixedly connected after the truss is unloaded, and then the first sliding rails and the supporting mechanism are disassembled.
By adopting the technical scheme, the first sliding rail and the second sliding rail can keep the integrity of the sliding rail, the truss can slide on the sliding rail, and the second sliding rail is replaced by the truss base when the truss is unloaded, so that the truss can be conveniently unloaded and fixed.
Preferably, the unloading mechanism includes a sliding plate connected to the sliding rail in a sliding manner and a jack connected to the sliding plate, a fixed end of the jack is connected to the sliding plate, and a movable end of the jack is connected to the bottom surface of the fixed platform, and in the seventh step, when the truss is unloaded, the jack is located on the first sliding rail; and a movable plate is installed at the bottom of the fixed column and is connected with the sliding rail in a sliding manner.
Through adopting above-mentioned technical scheme, the jack can make the truss descend slowly, until support column and truss base butt, then connect fixed stay post and truss base, realize the fixed mounting of truss.
Preferably, the sliding rail is provided with a mounting seat, the hydraulic oil cylinder is rotatably connected to the mounting seat, the tail end of a piston rod of the hydraulic oil cylinder is provided with a fixing sleeve, the fixing sleeve comprises two hoop bodies hooped by the piston rod of the hydraulic oil cylinder, the two hoop bodies are connected through a connecting screw rod, the two hoop bodies are provided with adjusting plates abutted to the side faces of the fixing table, the adjusting plates are provided with a plurality of adjusting holes along the length direction, the fixing table is rotatably connected with adjusting rods penetrating through the adjusting holes, and the adjusting plates are provided with supporting plates abutted to the end faces of the piston rod of the hydraulic oil cylinder.
Through adopting above-mentioned technical scheme, hydraulic cylinder's piston rod exerts thrust through the regulating plate to the support column, realizes sliding of truss, stretches out to be close extreme position back as the piston rod simultaneously, dismantles the regulating plate, withdraws the piston rod, is connected the regulating plate through the regulation hole that is close to the support column and regulation pole cooperation, and the increase piston rod is used in the stroke of truss to make the truss further slide under the condition of unmovable hydraulic cylinder for construction speed.
Preferably, the reinforcing groove has been seted up to the side of regulating plate, the reinforcing groove is followed the rotation direction arc of regulating plate extends, the side of fixed station is equipped with the reinforcement piece, the arc extending direction of reinforcement piece with reinforce groove looks adaptation and sliding connection in the reinforcing groove.
Through adopting above-mentioned technical scheme, reinforcing groove and reinforcing block cooperation increase the area of contact of regulating plate and fixed station, make the atress of fixed station more even, help the stable slip of truss.
Preferably, the side of the fixed column close to the ejector is provided with a chute in the vertical direction, the chute is connected with a sliding block in a sliding manner, the sliding block is connected with a reinforcing cylinder in a rotating manner, the reinforcing cylinder is inserted with a reinforcing rod, the outer wall of one end of the reinforcing rod close to the fixed column is provided with a friction pad which is connected with the inner wall of the reinforcing cylinder in a sliding manner, one end of the reinforcing rod far away from the fixed column is surrounded with a convex edge, and the convex edge is connected with the abutting plate through a bolt.
Through adopting above-mentioned technical scheme, the piston rod passes through the stiffener and strengthens the frictional force between the section of thick bamboo to the fixed column application of force, increases the stress position of truss, further improves the stability that the truss slided.
Preferably, the both sides of mount pad be equipped with the otic placode of the rail butt that slides, the otic placode pass through set screw with the rail connection that slides, the mount pad deviates from the side of support column is rotated and is connected with a screw thread section of thick bamboo, a screw thread section of thick bamboo is inserted and is established and threaded connection has the pole of supporting, a plurality of draw-in grooves have been seted up along length direction to the rail that slides, keep away from to the pole the one end of mount pad with the mount pad leaves interval and joint in the draw-in groove.
By adopting the technical scheme, the threaded cylinder is rotated and the support rod is rotated to fix the position of the mounting seat on the sliding rail through the fixing screw rod, so that the support rod is clamped and tightly supported on the clamping groove, the resistance of the mounting seat to the reverse thrust of the hydraulic oil cylinder is improved, and the stability of the mounting seat is kept.
Preferably, the bottom surface of fixed column is equipped with a plurality of connecting cylinders, the movable plate is worn to be equipped with a plurality of connecting rods of inserting and locating the connecting cylinder, be connected with a plurality of elastic components between fixed column and the movable plate.
Through adopting above-mentioned technical scheme, the elastic component can make the movable plate keep the butt in the slip rail, plays the supporting role to the fixed column to improve the stability that the truss removed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. compared with the original method that the truss is hoisted to the preset installation position by using hoisting equipment, the moving process of the truss is more controllable, the moving accuracy of the truss is improved under the guiding action of the sliding rail, the construction difficulty is reduced, and meanwhile, the method that the truss is assembled while sliding is adopted, so that a plurality of trusses can synchronously move, and the speed of installing the truss is improved;
2. the adjusting plate is arranged, so that after the piston rod extends out to be close to the limit position, the adjusting plate can be detached, the piston rod is retracted, the adjusting plate is connected with the adjusting rod in a matched mode through the adjusting hole close to the supporting column, the stroke of the piston rod acting on the truss is increased, the truss can further slide under the condition that the hydraulic oil cylinder is not moved, and the construction speed is accelerated.
Drawings
Fig. 1 is a schematic plan view of an embodiment of the present application.
Fig. 2 is a top view of an embodiment of the present application.
Fig. 3 is a schematic plan view of the support column, the support mechanism, the unloading mechanism, and the ejector in the case of sliding the truss according to the embodiment of the present application.
Fig. 4 is a partially enlarged view of a in fig. 3.
Fig. 5 is a schematic cross-sectional structure view of a mount and a sliding rail according to an embodiment of the present application.
Fig. 6 is a schematic plan view of an adjustment plate according to an embodiment of the present application.
FIG. 7 is a schematic plan view of an adjusting plate, a reinforcing rod, a fixing table and a fixing column according to an embodiment of the present application.
Fig. 8 is a schematic plan view of a support column after unloading of a truss according to an embodiment of the present application.
Description of reference numerals: 1. a building body; 11. a midspan support frame; 12. a scaffold construction platform; 13. sliding the rail; 14. a first slide rail; 15. a second slide rail; 16. a projection; 17. a support portion; 18. a fixing hole; 19. a card slot; 2. a truss; 21. a support pillar; 22. a fixed table; 23. fixing a column; 24. reinforcing columns; 25. moving the plate; 26. a connecting rod; 27. a connecting cylinder; 28. a spring; 3. a jack; 31. a slide plate; 32. a guard plate; 4. a hydraulic cylinder; 41. a mounting seat; 42. an ear plate; 43. fixing the screw rod; 44. a threaded barrel; 45. a support rod; 5. an adjusting plate; 51. an adjustment hole; 52. a resisting plate; 53. a hoop body; 54. a hoop ear; 55. connecting a screw rod; 56. a reinforcing groove; 57. adjusting a rod; 6. a reinforcement cylinder; 61. a reinforcing bar; 62. a chute; 63. a slider; 64. a convex edge; 7. a truss base.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses a steel structure roof truss sliding construction method. As shown in fig. 1 and 2, a steel structure roof truss sliding construction method comprises the following steps:
the method comprises the following steps: a midspan support frame 11 is arranged in the middle of the interior of the building main body 1, the distances from the midspan support frame 11 to the two sides of the building main body 1 are equal, the length direction of the midspan support frame 11 is parallel to the length direction of the two sides of the building main body 1, and specifically, the two sides of the building main body 1 are of a built reinforced concrete structure; sliding rails 13 are installed on two sides of the building main body 1 and above the midspan support frame 11, and the sliding rails 13 are arranged along the length direction of the midspan support frame 11.
As shown in fig. 3, the sliding rail 13 includes two protruding portions 16 arranged up and down and a supporting portion 17 connected between the two protruding portions 16, so that the cross section of the sliding rail 13 is i-shaped, the sliding rail 13 located at two sides of the building main body 1 is formed by assembling a plurality of first sliding rails 14 and a plurality of second sliding rails 15, the first sliding rails 14 and the second sliding rails 15 are arranged at intervals, and the position of the second sliding rails 15 corresponds to a predetermined installation position where the truss 2 is connected with the building main body 1.
Step two: as shown in fig. 1 and 2, a scaffold construction platform 12 is installed at a position near the starting end of the sliding rail 13, the scaffold construction platform 12 is fixedly connected to the midspan support frame 11 and both sides of the building body 1, and the scaffold construction platform 12 provides a place for workers to stand and operate.
Step three: the left assembling unit, the middle assembling unit and the right assembling unit are hoisted to the scaffold construction platform 12 through hoisting equipment, in the embodiment, the hoisting equipment is specifically a crawler crane, the left assembling unit, the middle assembling unit and the right assembling unit are assembled and combined into the truss 2 under the cooperation of the crawler crane and workers after reaching the scaffold construction platform 12, the position of the truss 2 is adjusted through the cooperation of the crawler crane and the workers, the truss 2 is moved to the sliding rail 13, the sliding rail 13 of the middle-span support frame 11 corresponds to the middle of the truss 2, and the sliding rails 13 on two sides of the building main body 1 respectively correspond to the left end and the right end of the truss 2.
As shown in fig. 1 and 3, specifically, the truss 2 is provided with support columns 21 at the left and right ends and the middle part, the support columns 21 are square columns, the support columns 21 are connected with a support mechanism, the support mechanism includes a fixed station 22 and fixed columns 23, the fixed station 22 is provided with two fixed stations symmetrically fixed on two sides of the support columns 21, the extending direction of the fixed station 22 is parallel to the length direction of the sliding rail 13, the fixed columns 23 are vertically fixed at one ends of the fixed stations 22 far away from the support columns 21, the fixed columns 23 extend towards the direction close to the sliding rail 13, the fixed columns 23 and the fixed stations 22 are square columns and are integrally formed; a reinforcing column 24 is fixed between the supporting column 21 and the fixed platform 22, the reinforcing column 24 is located on one side of the fixed platform 22 far away from the sliding rail 13, and the reinforcing column 24 can enhance the connection strength between the fixed platform 22 and the supporting column 21, so that a stable triangular structure is formed among the reinforcing column 24, the fixed platform 22 and the supporting column 21, and the bearing capacity and the stability of the fixed platform 22 are improved.
As shown in fig. 3 and 4, an unloading mechanism is arranged below each fixed station 22, the unloading mechanism includes a sliding plate 31 and a jack 3, the sliding plate 31 is connected to the sliding rail 13 in a sliding manner, a fixed end of the jack 3 is mounted on a bearing surface of the sliding plate 31, a movable end of the jack 3 is fixed on a bottom surface of the fixed station 22, the jack 3 supports the truss 2 by supporting the fixed station 22, the truss 2 is connected with the sliding rail 13 in a sliding manner, the movable end of the jack 3 is in an extended state, and a gap is left between the supporting column 21 and the sliding rail 13.
The movable plate 25 is installed to the bottom of fixed column 23, four connecting rods 26 wear to be equipped with on the bottom surface that the movable plate 25 deviates from fixed column 23, connecting rods 26 distribute in four corners of movable plate 25, the bottom surface of fixed column 23 is fixed with four connecting cylinders 27, connecting rods 26 insert and establish and sliding connection in connecting cylinders 27, be connected with a plurality of elastic components between fixed column 23 and the movable plate 25, in this embodiment, the elastic component specifically is spring 28, spring 28 cover locates the outer wall of connecting cylinder 27, when truss 2 slides with the rail 13 that slides and is connected, spring 28 is the compression state, make movable plate 25 butt in the rail 13 that slides, thereby utilize fixed column 23 further to support truss 2, stability when improving truss 2 and sliding.
When the truss 2 is moved to the sliding rail 13, the truss 2 is firstly lifted, the sliding plate 31 and the moving plate 25 are aligned with the sliding rail 13, then the truss 2 is put down, the sliding plate 31 and the moving plate 25 are abutted to the sliding rail 13, then the guard plates 32 are arranged on two sides of the bottom surfaces of the sliding plate 31 and the moving plate 25, the guard plates 32 are abutted to two sides of the upper protruding part 16 of the sliding rail 13, and the guard plates 32 play a limiting and guiding role on the sliding of the sliding plate 31 and the moving plate 25 and keep the truss 2 sliding along the length direction of the sliding rail 13.
As shown in fig. 4, step four: the pushing device is installed on the sliding rail 13, in this embodiment, the pushing device is specifically a hydraulic oil cylinder 4, a piston rod of the hydraulic oil cylinder 4 is connected with the fixed table 22 and the fixed column 23, and the hydraulic oil cylinder 4 pushes the fixed table 22 and the fixed column 23 to slide, so that the truss 2 is pushed to slide on the sliding rail 13, and the truss 2 is made to slide to the temporary stop position.
The mounting base 41 is mounted on the sliding rail 13, the hydraulic oil cylinder 4 is hinged with the mounting base 41, and the rotating axis of the hydraulic oil cylinder 4 is vertical to the length direction of the sliding rail 13; specifically, the bottom surface of the mounting seat 41 abuts against the sliding rail 13, lug plates 42 are fixed on two sides of the bottom surface of the mounting seat 41, the lug plates 42 abut against the protruding portions 16 of the sliding rail 13, a plurality of fixing screws 43 penetrate between the two lug plates 42, a plurality of fixing holes 18 are formed in the supporting portion 17 of the sliding rail 13 along the length direction, the fixing screws 43 are connected with the sliding rail 13 through the fixing holes 18, the fixing screws 43 are sleeved with nuts, the nuts abut against the side faces, away from the two lug plates 42, of the nuts, so that the mounting seat 41 is fixed on the sliding rail 13, the position of the mounting seat 41 is adjustable, and the position of the hydraulic cylinder 4 is adjusted according to the sliding position of the truss 2.
As shown in fig. 4 and 5, a threaded cylinder 44 is rotatably connected to a side surface of the mounting seat 41 away from the supporting column 21, a rotation axis of the threaded cylinder 44 is parallel to a rotation axis of the hydraulic cylinder 4, a resisting rod 45 is inserted into the threaded cylinder 44 and is in threaded connection with the threaded cylinder 44, a plurality of slots 19 are formed in the bearing surface of the protruding portion 16 of the sliding rail 13 along the length direction, after the mounting seat 41 is fixed to the sliding rail 13, the threaded cylinder 44 is rotated to enable one end, away from the mounting seat 41, of the resisting rod 45 to be close to the slots 19 until the resisting rod 45 is clamped in the slots 19, the resisting rod 45 is rotated relative to the threaded cylinder 44 to adjust the relative positions of the resisting rod 45 and the threaded cylinder 44, the resisting rod 45 is further clamped in the slots 19, a gap is reserved between one end, clamped in the slots 19, of the resisting rod 45 and the mounting seat 41, so that a stable triangular structure is formed between the resisting rod 45, the mounting seat 41 and the sliding rail 13, and the influence, the stability of truss 2 slippage is improved.
As shown in fig. 4 and 7, the end of the piston rod of the hydraulic cylinder 4 is provided with a fixing sleeve, the fixing sleeve comprises two hoop bodies 53, the hoop bodies 53 are semicircular, the two hoop bodies 53 are symmetrically arranged on the piston rod respectively, the two ends of the hoop bodies 53 are provided with hoop lugs 54, the hoop lugs 54 of the adjacent hoop bodies 53 are provided with connecting screw rods 55 in a penetrating manner, the two ends of each connecting screw rod 55 are provided with connecting nuts in a threaded manner, the two connecting nuts are respectively abutted against the side faces of the two hoop lugs 54 deviating from each other, and therefore the fixing sleeve is hooped on the outer wall of the piston rod.
As shown in fig. 7, a pressing plate 52 is fixed at one end of the adjusting plate 5 close to the fixing sleeve, and the pressing plate 52 is abutted against the end face of the piston rod of the hydraulic oil cylinder 4, so that the connection strength between the piston rod and the adjusting plate 5 is enhanced.
As shown in fig. 4, an adjusting plate 5 is fixed on each side of the two hoop bodies 53 away from the mounting base 41, a length direction of the adjusting plate 5 is parallel to a length direction of the piston rod, and a plurality of adjusting holes 51 are formed in the adjusting plate 5 along the length direction.
The relative both sides face of fixed station 22 all is equipped with perpendicularly and adjusts pole 57, it is connected with the fixed station 22 rotation to adjust pole 57, the rotation axis of adjusting pole 57 is perpendicular with the length direction of rail 13 that slides, adjust pole 57 and wear to locate corresponding regulation hole 51, and adjust pole 57 threaded connection has two lock nut, lock nut supports tightly in the both sides face of regulating plate 5, thereby it is fixed with regulating plate 5 to adjust pole 57, and make regulating plate 5 rotate with fixed station 22 and be connected, hydraulic cylinder 4's piston rod passes through regulating plate 5 and exerts thrust to fixed station 22, realize sliding of truss 2.
When the hydraulic oil cylinder 4 pushes the truss 2 to slide, the adjusting rod 57 penetrates through the adjusting hole 51 farthest away from the supporting column 21, after the piston rod extends to be close to the limit position, the adjusting plate 5 is disassembled, then the piston rod is retracted, the adjusting hole 51 closer to the supporting column 21 in the adjusting plate 5 is connected with the adjusting rod 57 in a matched mode, then the hydraulic oil cylinder 4 is started until the piston rod extends to be close to the limit position, and the like, so that the stroke of the piston rod acting on the truss 2 is increased, the truss 2 is further slid under the condition that the hydraulic oil cylinder 4 is not moved, the situation that the installation seat 41 is connected with the sliding rail 13 unstably due to repeated installation and disassembly of the installation seat 41 is reduced, and the construction speed is accelerated.
As shown in fig. 4 and 6, a reinforcing groove 56 is formed in the side surface of the adjusting plate 5, the reinforcing groove 56 extends in an arc shape along the rotation direction of the adjusting plate 5, and the reinforcing groove 56 and the adjusting hole 51 are arranged at intervals; the fixed station 22 is equipped with the side of adjusting pole 57 and is fixed with the reinforcement piece, the arc extending direction and the reinforcement groove 56 looks adaptation of reinforcement piece, and the length of reinforcement piece is less than reinforcement groove 56, when regulating plate 5 is connected with adjusting pole 57, reinforcement piece sliding connection is in reinforcement groove 56, when adapting to the relative pivoted between regulating plate 5 and the fixed station 22, increase regulating plate 5 and fixed station 22's area of contact, increase fixed station 22's stress area, fixed station 22's atress is more even, help the stable slip of truss 2.
As shown in fig. 4 and 7, a sliding groove 62 is formed in the side surface of the fixed column 23 close to the hydraulic cylinder 4 along the vertical direction, a sliding block 63 is connected in the sliding groove 62 in a sliding manner, a reinforcing cylinder 6 is rotatably connected to the side surface of the sliding block 63 away from the bottom of the sliding groove 62, the rotation axis of the reinforcing cylinder 6 is parallel to the rotation axis of the adjusting rod 57, a reinforcing rod 61 is inserted into the reinforcing cylinder 6, a convex edge 64 is arranged and fixed around one end of the reinforcing rod 61 away from the fixed column 23, a bolt penetrates through the convex edge 64, and the bolt is in threaded connection with the abutting plate 52, so that the reinforcing; the stiffener 61 is close to the one end outer wall cover of fixed column 23 and establishes and is fixed with the friction pad, friction pad sliding connection is in 6 inner walls of reinforcement section of thick bamboo to increase the sliding friction resistance between stiffener 61 and the reinforcement section of thick bamboo 6, at the release in-process of piston rod, the frictional force between stiffener 61 and the reinforcement section of thick bamboo 6 makes slider 63 slide in spout 62, and play the impetus to fixed column 23, increase truss 2's stress position, improve truss 2's stability of removing.
Step five: as shown in fig. 2, the other left assembly unit, the middle assembly unit and the right assembly unit are hoisted to the scaffold construction platform 12 by the crawler crane and assembled into the next truss 2, a connecting rod is installed between the previous truss 2 and the next truss 2 to connect and combine the trusses 2, and then the hydraulic cylinder 4 is started to push the next truss 2 to the temporary stop position.
Step six: and repeating the fifth step, completing the assembly of the rest trusses 2 and the connection and the sliding between the trusses 2 until all the trusses 2 reach the preset installation position.
Step seven: as shown in fig. 3 and 8, the truss 2 is unloaded, at this time, the jack 3 is located above the first slide rail 14, the second slide rail 15 on the building main body 1 is firstly disassembled, then the moving plate 25 is disassembled, the truss base 7 is installed at the original position of the second slide rail 15, the jack 3 is started to drive the fixed platform 22 to slowly descend, finally the supporting column 21 is abutted against the truss base 7, the supporting column 21 is fixedly connected with the truss base 7, then the fixed platform 22, the reinforcing column 24 and the first slide rail 14 are disassembled, finally the midspan support frame 11 is disassembled, and the sliding construction of the steel structure roof truss is completed.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A steel structure roof truss sliding construction method is characterized in that: the method comprises the following steps:
the method comprises the following steps: a midspan support frame (11) is arranged in a building main body (1), sliding rails (13) for sliding connection of a truss (2) are arranged on two sides of the building main body (1) and above the midspan support frame (11), and the sliding rails (13) respectively correspond to the left end, the right end and the middle part of the truss (2);
step two: installing a scaffold construction platform (12) at the positions, close to the starting end of the sliding rail (13), of the midspan support frame (11) and the two sides of the building main body (1);
step three: hoisting the truss (2) to the scaffold construction platform (12) through hoisting equipment, adjusting the position of the truss, and moving the truss to the sliding rail (13), wherein the truss (2) is in sliding fit with the sliding rail (13) under the cooperation of a supporting mechanism and an unloading mechanism;
step four: an ejector is arranged on the sliding rail (13) and pushes the supporting mechanism to enable the truss (2) to slide to a temporary stop position;
step five: hoisting the latter truss (2) to the scaffold construction platform (12) through hoisting equipment, installing a connecting rod between the former truss (2) and the latter truss (2), and pushing the latter truss (2) to a temporary stop position through the ejector;
step six: repeating the fifth step, completing the assembly, connection and sliding of the rest of the trusses (2) until all the trusses (2) reach the preset installation position;
step seven: the truss (2) is unloaded through the unloading mechanism, the truss (2) is fixed to the two sides of the building main body (1), the midspan support frame (11), the sliding rail (13) and the scaffold construction platform (12) are disassembled, and sliding construction of the steel structure roof truss is completed.
2. The steel structure roof truss sliding construction method as claimed in claim 1, wherein: in the third step and the fifth step, the truss (2) comprises a left assembly unit, a middle assembly unit and a right assembly unit, wherein the left assembly unit, the middle assembly unit and the right assembly unit are hoisted to the scaffold construction platform (12) through hoisting equipment, and the truss (2) is assembled under the cooperation of the hoisting equipment and manpower.
3. The steel structure roof truss sliding construction method as claimed in claim 1, wherein: in the fourth step, the supporting mechanism is connected to a supporting column (21) of the truss (2), the supporting mechanism comprises fixing platforms (22) symmetrically arranged on two sides of the supporting column (21) and fixing columns (23) arranged at one ends, far away from the supporting column (21), of the fixing platforms (22) and connected with the sliding rails (13) in a sliding mode, reinforcing columns (24) are arranged between the fixing platforms (22) and the supporting column (21), gaps are reserved between the supporting column (21) and the sliding rails (13), the pushing device is a hydraulic oil cylinder (4), and the tail end of a piston rod of the hydraulic oil cylinder (4) is connected with the fixing platforms (22) which are close to each other.
4. The steel structure roof truss sliding construction method as claimed in claim 3, wherein: the sliding rails (13) located on two sides of the building main body (1) are composed of a plurality of first sliding rails (14) and a plurality of second sliding rails (15), the first sliding rails (14) and the second sliding rails (15) are arranged at intervals, the position of the second sliding rails (15) corresponds to the preset installation position of the supporting columns (21), in the seventh step, when the truss (2) is unloaded, the second sliding rails (15) on the building main body (1) are disassembled and replaced by the truss bases (7), the supporting columns (21) and the truss bases (7) are fixedly connected after the truss (2) is unloaded, and then the first sliding rails (14) and the supporting mechanisms are disassembled.
5. The steel structure roof truss sliding construction method as claimed in claim 4, wherein: the unloading mechanism comprises a sliding plate (31) connected with the sliding rail (13) in a sliding mode and a jack (3) connected with the sliding plate (31), the fixed end of the jack (3) is connected with the sliding plate (31), the movable end of the jack is connected with the bottom surface of the fixed table (22), and in the seventh step, when the truss (2) is unloaded, the jack (3) is located on the first sliding rail (14); and a moving plate (25) is installed at the bottom of the fixed column (23), and the moving plate (25) is connected to the sliding rail (13) in a sliding manner.
6. The steel structure roof truss sliding construction method as claimed in claim 3, wherein: slide rail (13) are equipped with mount pad (41), hydraulic cylinder (4) rotate connect in mount pad (41), the piston rod end of hydraulic cylinder (4) is equipped with fixed cover, fixed cover include two with hoop body (53) that hydraulic cylinder (4) piston rod cramped, two connect through connecting screw (55) between hoop body (53), two hoop body (53) all are equipped with the butt in regulating plate (5) of fixed station (22) side, a plurality of regulation holes (51) have been seted up along length direction in regulating plate (5), fixed station (22) rotate be connected with wear to locate correspondingly regulation pole (57) of regulation hole (51), regulating plate (5) be equipped with support plate (52) of hydraulic cylinder (4) piston rod terminal surface butt.
7. The steel structure roof truss sliding construction method as claimed in claim 6, wherein: reinforcing groove (56) have been seted up to the side of regulating plate (5), reinforcing groove (56) are followed the direction of rotation arc of regulating plate (5) extends, the side of fixed station (22) is equipped with the reinforcement piece, the arc extending direction of reinforcement piece with reinforcing groove (56) looks adaptation and sliding connection in reinforcing groove (56).
8. The steel structure roof truss sliding construction method as claimed in claim 7, wherein: fixed column (23) are close to spout (62) have been seted up along vertical direction to the side of top pusher, sliding connection has slider (63) in spout (62), slider (63) rotate and are connected with and strengthen a section of thick bamboo (6), strengthen a section of thick bamboo (6) and insert and be equipped with stiffener (61), stiffener (61) are close to the one end outer wall of fixed column (23) is equipped with sliding connection in the friction pad of strengthening a section of thick bamboo (6) inner wall, stiffener (61) are kept away from the one end of fixed column (23) is enclosed and is equipped with chimb (64), chimb (64) pass through the bolt with support plate (52) and be connected.
9. The steel structure roof truss sliding construction method as claimed in claim 6, wherein: the both sides of mount pad (41) be equipped with otic placode (42) of sliding rail (13) butt, otic placode (42) through clamping screw (43) with sliding rail (13) are connected, mount pad (41) deviate from the side of support column (21) is rotated and is connected with a screw thread section of thick bamboo (44), screw thread section of thick bamboo (44) are inserted and are established and threaded connection has support rod (45), sliding rail (13) have been seted up a plurality of draw-in grooves (19) along length direction, support rod (45) keep away from the one end of mount pad (41) with mount pad (41) leave interval and joint in draw-in groove (19).
10. The steel structure roof truss sliding construction method as claimed in claim 3, wherein: the bottom surface of the fixed column (23) is provided with a plurality of connecting cylinders (27), the moving plate (25) is provided with a plurality of connecting rods (26) inserted in the connecting cylinders (27), and a plurality of elastic pieces are connected between the fixed column (23) and the moving plate (25).
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| CN112942848A (en) * | 2021-02-22 | 2021-06-11 | 中国建筑第八工程局有限公司 | Positive-placed quadrangular pyramid steel net rack skidding equipment and skidding method thereof |
| CN113802860A (en) * | 2021-10-29 | 2021-12-17 | 中石化石油工程技术服务有限公司 | Truss crossing, pushing, installing and constructing method |
| CN114233022A (en) * | 2022-01-05 | 2022-03-25 | 北钢建设集团股份有限公司 | Circular steel structure dome auxiliary installation equipment and construction method |
| CN115324363A (en) * | 2022-08-16 | 2022-11-11 | 北京首钢建设集团有限公司 | N-point supporting and sliding method for multiple slideways of super-large span prestressed pipe truss |
| CN115324364A (en) * | 2022-08-25 | 2022-11-11 | 中轻(广州)钢结构有限公司 | Steel structure roof truss sliding construction method |
| CN115788078A (en) * | 2022-12-23 | 2023-03-14 | 浙江浙建钢结构有限公司 | Large-span steel structure truss high altitude roller sliding device |
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| CN115788078A (en) * | 2022-12-23 | 2023-03-14 | 浙江浙建钢结构有限公司 | Large-span steel structure truss high altitude roller sliding device |
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