CN113373796B - External prestress buffering device for building steel box girder and construction process - Google Patents
External prestress buffering device for building steel box girder and construction process Download PDFInfo
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- CN113373796B CN113373796B CN202110790014.8A CN202110790014A CN113373796B CN 113373796 B CN113373796 B CN 113373796B CN 202110790014 A CN202110790014 A CN 202110790014A CN 113373796 B CN113373796 B CN 113373796B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention relates to the technical field of buffering devices, in particular to an external prestress buffering device for a building steel box girder and a construction process, wherein the external prestress buffering device comprises a plurality of telescopic pipes and two connecting end frames, a plurality of telescopic auxiliary pipes are arranged between the two connecting end frames, the telescopic pipes and the telescopic auxiliary pipes are respectively connected with the connecting end frames through a plurality of connecting assemblies, a plurality of front seat sleeves and a plurality of rear seat sleeves are respectively and fixedly connected onto the two connecting end frames, the front seat sleeves and the rear seat sleeves are respectively provided with a strip hole, a grid frame assembly is arranged between the front seat sleeves and the rear seat sleeves, two connecting rods are arranged in the grid frame assembly and are respectively inserted into the two strip holes, the two connecting rods are respectively provided with an elastic assembly, and the front seat sleeves and the rear seat sleeves are respectively connected with positioning bolts.
Description
Technical Field
The invention relates to the technical field of buffering devices, in particular to a building steel box girder external prestress buffering device and a construction process.
Background
As is well known, a steel box girder for construction is a structural form commonly used for large-span bridges, and is generally formed by connecting a top plate, a bottom plate, a web plate, transverse partition plates, longitudinal partition plates, stiffening ribs and the like in a full-welding manner, wherein the top plate is an orthotropic bridge deck plate formed by a cover plate and longitudinal stiffening ribs, and is called a steel box girder because the shape of the steel box girder is like a box.
Because the building steel box girder body is generally used on a bridge with a large span, the steel box girder body is generally matched with a segmented design according to the length of a construction site, then the construction is carried out on the bridge construction site, the welding construction is carried out, because the steel box girder body has a large structure, the welding of the building steel box girder body is more, and the welding between multiple segments is easy to have large stress.
However, when the external prestress buffering device is used, the buffering effect of the transverse parallel stress between two adjacent steel box girders for construction is good, but the stress buffering effect in other directions is weak, the use reliability is poor, sundries are easily accumulated between a plurality of anti-falling cross rods or in the telescopic grate during the operation at the same time, the stress buffering effect is easily influenced by long-term use, therefore, the buffering effect is ensured by frequent cleaning, meanwhile, the whole structure is convenient to disassemble and assemble, once parts are damaged, the external prestress buffering device can be quickly replaced, the maintenance is simple, and the external prestress buffering device is practical.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the external prestress buffering device for the building steel box girder and the construction process, the stress buffering effect in multiple directions between two adjacent building steel box girders is better, the use is more reliable, sundries are not easy to enter in gaps in a grid assembly during operation, the buffering effect is more stable after long-term use, the integral structure of the grid assembly is convenient to disassemble and assemble, once parts are damaged, the quick replacement can be realized, the maintenance is simpler, and the practicability is better.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an external prestressing force buffer of building steel box girder, includes a plurality of flexible pipes, still includes two connecting end frames, flexible pipe includes main damping pole and main damping pipe, main damping pole sets up the inside of main damping pipe, and the cooperation forms main damping room between main damping pole and the main damping pipe, installs a plurality of flexible auxiliary tubes between two connecting end frames, and main damping pole, main damping pipe and flexible auxiliary tube all are connected with the connecting end frame through a plurality of coupling assembling respectively, and a plurality of front seat covers of fixedly connected with and a plurality of back seat covers on two connecting end frames respectively, and the one end that front seat cover and back seat cover are close to each other has all seted up a hole, is provided with the bars frame subassembly that is connected with main damping pipe between front seat cover and the back seat cover, be provided with two connecting rods in the bars frame subassembly, two the one end of keeping away from the bars frame subassembly inserts two downtheholely respectively, and keeping away from of two connecting rods the one end of bars frame subassembly all is provided with elastic component, is connected with the positioning bolt that equal screw thread is used for stabilizing elastic component on the front seat cover and the back seat cover on the front seat cover.
Preferably, two the connecting end frame all includes roof beam pole and underbeam pole, connect through a plurality of pole settings between roof beam pole and the underbeam pole, two sloping poles of symmetry fixedly connected with between roof beam pole and the underbeam pole, preceding seat cover and back seat cover are fixed connection respectively two on the roof beam pole.
It is further, a plurality of coupling assembling all includes articulated frame, and is a plurality of two engaging lugs of equal fixedly connected with are a plurality of on the articulated frame the engaging lug respectively with upper beam pole, underbeam pole and hypotenuse pole fixed connection, a plurality of articulated frame respectively with main damping pole, main damping pipe and flexible auxiliary tube rotate to be connected.
Furthermore, the grid assembly comprises two edge grids and a plurality of middle grids, the two edge grids are respectively connected with two connecting rods, every two adjacent middle grids in the plurality of middle grids are connected through a double convex rod, two middle grids close to two sides in the plurality of middle grids are respectively connected with the two edge grids through two edge convex rods, edge sealing pieces are arranged between the two edge grids and the middle grids close to the edge grids in the plurality of middle grids, and middle sealing pieces are arranged between every two adjacent middle grids in the plurality of middle grids.
Furthermore, the elastic assembly comprises a spring and a top piece matched with the positioning bolt, two ends of the spring are respectively connected with the connecting rod and the top piece, and the spring and the top piece are arranged in the strip hole.
As the scheme further, the main damping tube is fixedly connected with a connecting plate, the connecting plate is fixedly connected with a vertical rod, the bottom end of the middle grid frame is provided with a connecting groove matched with the vertical rod, and the vertical rod is arranged in the connecting groove.
As a further improvement of the above scheme, the main damping pipe and the telescopic auxiliary pipe are both communicated with a communicating elbow pipe, and the communicating elbow pipe is in threaded connection with a bolt plug.
As a further improvement of the above scheme, two of the diagonal rods are fixedly connected with diagonal rods, the diagonal rods are fixedly connected with the upper beam rod, and an auxiliary stay rod is fixedly connected between the diagonal rods and the lower beam rod.
As a further scheme of the scheme, oblique supporting rods are fixedly connected between every two adjacent vertical rods in the vertical rods, and the top ends and the bottom ends of the oblique supporting rods are fixedly connected with the upper beam rod and the lower beam rod respectively.
A construction steel box girder external prestress buffering device and a construction process comprise the following steps:
s1, in the construction and installation process of the external prestress buffering device for the building steel box girder, firstly, an upper girder rod, a lower girder rod and a bevel edge rod are blanked and welded into a connecting end frame according to the size of the building steel box girder, then, the blanking of an inclined stay bar, an auxiliary stay bar and an inclined strut rod is realized according to the size of the connecting end frame, the blanked inclined stay bar, the auxiliary stay bar and the inclined strut rod are welded in the connecting end frame, the reinforcement of the connecting end frame is completed, and the two connecting end frames are respectively connected with two sections of building steel box girders which need to be mutually connected;
s2, after the connecting end frames are connected with the building steel box girder, a telescopic pipe and a telescopic auxiliary pipe which are connected with a connecting assembly in advance are installed between the two connecting end frames, bolt plugs are screwed off relative to the communicating bent pipe, damping liquid is filled into the main damping chamber and the telescopic auxiliary pipe through the communicating bent pipe, damping liquid with different concentrations is selected according to the size of the building steel box girder and the load of a bridge before the damping liquid is filled, the bolt plugs are screwed into the communicating bent pipe after the damping liquid is filled, and the communicating bent pipe is plugged again;
s3, after the telescopic pipe and the telescopic auxiliary pipe are installed, respectively installing a front seat cover and a rear seat cover at the top ends of two connecting end frames, then placing a grid frame assembly between the front seat cover and the rear seat cover, sleeving a connecting groove at the bottom end of a middle grid frame on a vertical rod, respectively inserting two connecting rods into a strip hole in the front seat cover and a strip hole in the rear seat cover, inserting a top piece and a spring into the strip hole until the connecting rods are inserted into the strip holes in the inserting process of the two connecting rods, then fixing the connecting rods in the two strip holes by rotating a positioning bolt, and completing the installation of the external prestress buffer device of the building steel box girder;
s4, this external prestressing force buffer of building steel box girder installs the back, when two building steel box girders produce external stress, a plurality of flexible pipes and a plurality of flexible auxiliary tube mutually support and offset the stress that comes from building steel box girder transmission between two connecting end frames, a plurality of flexible pipes and a plurality of flexible auxiliary tube stress offset the in-process and can change flexible pipe and flexible auxiliary tube' S length, can drive the change of relative distance between the grid in every adjacent two in a plurality of well grids through the montant in a plurality of flexible pipe and a plurality of flexible auxiliary tube length change processes, realize sheltering from of the gap between two building steel box girders in the stress change process.
(III) advantageous effects
Compared with the prior art, the invention provides an external prestress buffering device for a building steel box girder and a construction process, and the external prestress buffering device has the following beneficial effects:
1. this external prestressing force buffer and construction process of building steel box girder, through the cooperation of flexible pipe and coupling assembling and the cooperation of flexible auxiliary pipe and coupling assembling, be convenient for install a plurality of flexible pipes and a plurality of flexible auxiliary pipe between two connection end frames to be convenient for the buffering of the stress of a plurality of directions between its two adjacent building steel box girders, the buffering effect is all better, uses comparatively reliably.
2. According to the external prestress buffering device for the building steel box girder and the construction process, through the design of the grid frame assembly, the size of the grid frame assembly can be changed along with the change of the angle of the telescopic pipe when the telescopic pipe is changed, sundries are not easy to enter a gap in the grid frame assembly, and the buffering effect is stable after long-term use.
3. This external prestressing force buffer and construction process of building steel box girder can realize the centering effect of grid subassembly through elastic component's design, and is comparatively practical, through the cooperation of front seat cover and positioning bolt and the cooperation of back seat cover and positioning bolt, makes the overall structure dismouting of being convenient for of grid subassembly, in case there is the part to damage, can quick replacement, and it is comparatively simple to maintain, comparatively practical.
Drawings
FIG. 1 is a partially cut-away perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B according to the present invention;
FIG. 4 is an enlarged partial view of FIG. 1 at C;
FIG. 5 is an enlarged view of a portion of FIG. 1 at D according to the present invention;
FIG. 6 is a schematic perspective view of the combination of the grill assembly, the front seat cover and the rear seat cover of the present invention;
fig. 7 is a schematic perspective view of the present invention.
In the figure: 1. a primary damping rod; 2. a primary damping tube; 3. a telescopic auxiliary tube; 4. a front seat cover; 5. a rear seat cover; 6. a connecting rod; 7. positioning the bolt; 8. an upper beam rod; 9. a lower beam rod; 10. erecting a rod; 11. a sloping rod; 12. a hinged frame; 13. connecting lugs; 14. a side grid frame; 15. a middle grid; 16. a double protruding rod; 17. an edge projecting bar; 18. an edge sealing sheet; 19. a middle closure flap; 20. a spring; 21. a top piece; 22. a connecting plate; 23. a vertical rod; 24. a bent pipe is communicated; 25. a bolt plug; 26. a diagonal brace; 27. an auxiliary stay bar; 28. an oblique supporting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Examples
Referring to fig. 1-7, an external prestress buffer device for a steel box girder of a building comprises a plurality of telescopic pipes and two connecting end frames, wherein each connecting end frame comprises an upper beam rod 8 and a lower beam rod 9, the upper beam rod 8 and the lower beam rod 9 are connected through a plurality of vertical rods 10, a diagonal rod 28 is fixedly connected between every two adjacent vertical rods 10 in the plurality of vertical rods 10, the top end and the bottom end of the diagonal rod 28 are respectively and fixedly connected with the upper beam rod 8 and the lower beam rod 9, the structural strength between the vertical rods 10 and the upper beam rod 8 and the lower beam rod 9 is improved, two diagonal rods 11 are symmetrically and fixedly connected between the upper beam rod 8 and the lower beam rod 9, a front seat cover 4 and a rear seat cover 5 are respectively and fixedly connected on the two upper beam rods 8, diagonal rods 26 are respectively and fixedly connected on the two diagonal rods 11, the diagonal rods 26 are fixedly connected with the upper beam rod 8, the diagonal rods 26 are fixedly connected with the lower beam rod 9, the diagonal rods 26 are respectively and fixedly connected with the main beam rod 8, the diagonal rods 27 are fixedly connected with the lower beam rod 11, the damping tube connecting assembly is connected with the damping tube 1, the damping tube assembly 2 is connected with the damping tube 12, the damping tube assembly is connected with the damping tube 1, the damping tube assembly 13, the damping tube assembly and the damping tube assembly 12 are respectively, the damping tube assembly 3, the damping tube assembly is connected with the damping tube assembly, the damping tube assembly 3, thereby be convenient for the buffering of the stress of a plurality of directions between its two adjacent building steel box girders, the cushioning effect is all better, uses comparatively reliably.
It should be further noted that the main damping tube 2 and the telescopic auxiliary tube 3 are both communicated with a communicating elbow 24, the communicating elbow 24 is threaded with a bolt plug 25 for filling damping fluid, two connecting end frames are respectively fixedly connected with a plurality of front seat covers 4 and a plurality of rear seat covers 5, one ends of the front seat covers 4 and the rear seat covers 5 close to each other are respectively provided with a bar hole, a grid assembly connected with the main damping tube 2 is arranged between the front seat covers 4 and the rear seat covers 5, the grid assembly comprises two edge grids 14 and a plurality of middle grids 15, the two edge grids 14 are respectively connected with two connecting rods 6, every two adjacent middle grids 15 in the plurality of middle grids 15 are connected with each other through a double protruding rod 16, the two middle grids 15 close to two sides in the plurality of middle grids 15 are respectively connected with the two edge grids 14 through two protruding rods 17, an edge sealing sheet 18 is arranged between two edge grids 14 and a middle grid 15 close to the edge grids 14 in a plurality of middle grids 15, a middle sealing sheet 19 is arranged between every two adjacent middle grids 15 in the plurality of middle grids 15, the size of a grid assembly can be changed along with the change of the angle of a telescopic pipe when the telescopic pipe is changed, sundries are not easy to enter gaps in the grid assembly, the buffering effect is stable in long-term use, a connecting plate 22 is fixedly connected to a main damping pipe 2, a vertical rod 23 is fixedly connected to the connecting plate 22, a connecting groove matched with the vertical rod 23 is formed in the bottom end of the middle grid 15, the vertical rod 23 is arranged in the connecting groove, the connection between the middle grids 15 and the main damping pipe 2 is realized, two connecting rods 6 are arranged in the grid assembly, one ends of the two connecting rods 6 far away from the grid assembly are respectively inserted into the two strip holes, one ends of the two connecting rods 6 far away from the grid assembly are respectively provided with an elastic assembly, elastic component includes spring 20 and with 7 assorted tops 21 of positioning bolt, the both ends of spring 20 are connected in connecting rod 6 and tops 21 respectively, spring 20 and tops 21 all set up in the strip downthehole, can realize the centering effect of grid assembly, and is comparatively practical, equal threaded connection has positioning bolt 7 that is used for stabilizing elastic component on front seat cover 4 and the back seat cover 5, make the overall structure of grid assembly dismouting of being convenient for, in case there is the part damage, can quick replacement, it is comparatively simple to maintain, and is comparatively practical.
A construction steel box girder external prestress buffering device and a construction process thereof comprise the following steps:
s1, in the construction and installation process of the external prestress buffering device for the building steel box girder, firstly, an upper girder rod 8, a lower girder rod 9 and a bevel edge rod 11 are blanked and welded into a connecting end frame according to the size of the building steel box girder, then, blanking of an inclined stay bar 26, an auxiliary stay bar 27 and an inclined strut bar 28 is realized according to the size of the connecting end frame, the blanked inclined stay bar 26, the auxiliary stay bar 27 and the inclined strut bar 28 are welded in the connecting end frame, reinforcement of the connecting end frame is completed, and the two connecting end frames are respectively connected with two sections of building steel box girders which need to be mutually connected;
s2, after the connecting end frames are connected with the building steel box girder, a telescopic pipe and a telescopic auxiliary pipe 3 which are connected with a connecting assembly in advance are installed between the two connecting end frames, a bolt plug 25 is screwed off relative to the communicating elbow pipe 24, damping liquid is filled into the main damping chamber and the telescopic auxiliary pipe 3 through the communicating elbow pipe 24, damping liquid with different concentrations is selected according to the size of the building steel box girder and the load of a bridge before the damping liquid is filled, the bolt plug 25 is screwed into the communicating elbow pipe 24 after the damping liquid is filled, and the communicating elbow pipe 24 is plugged again;
s3, after the telescopic pipe and the telescopic auxiliary pipe 3 are installed, respectively installing a front seat cover 4 and a rear seat cover 5 at the top ends of two connecting end frames, then placing a grid frame assembly between the front seat cover 4 and the rear seat cover 5, sleeving a connecting groove at the bottom end of a middle grid frame 15 on a vertical rod 23, respectively inserting two connecting rods 6 into strip holes in the front seat cover 4 and strip holes in the rear seat cover 5, inserting the two connecting rods 6 into the strip holes, firstly inserting a top piece 21 and a spring 20 into the strip holes until the connecting rods 6 are inserted into the strip holes, then fixing the connecting rods 6 in the two strip holes by rotating a positioning bolt 7, and completing the installation of the external prestress buffer device of the building steel box girder;
s4, after the installation of the external prestress buffering device for the building steel box girder is completed, when two building steel box girders generate external stress, a plurality of telescopic pipes and a plurality of telescopic auxiliary pipes 3 are matched with each other to offset the stress transmitted from the building steel box girder between two connecting end frames, the lengths of the telescopic pipes and the telescopic auxiliary pipes 3 can be changed in the stress offset process of the telescopic pipes and the telescopic auxiliary pipes 3, the relative distance between every two adjacent middle grids 15 in the plurality of middle grids 15 can be driven by the vertical rods 23 in the length change process of the telescopic pipes and the telescopic auxiliary pipes 3, and the shielding of a gap between the two building steel box girders in the stress change process is realized.
To sum up, in the construction and installation process of the external prestress buffer device for the steel box girder of the building, firstly, the upper girder rod 8, the lower girder rod 9 and the bevel edge rod 11 are blanked and welded into the connecting end frame according to the size of the steel box girder of the building, then the blanking of the diagonal brace 26, the auxiliary brace 27 and the diagonal brace 28 is realized according to the size of the connecting end frame, the blanked diagonal brace 26, the auxiliary brace 27 and the diagonal brace 28 are welded in the connecting end frame, the reinforcement of the connecting end frame is completed, the two connecting end frames are respectively connected with two sections of steel box girders of the building which need to be connected with each other, after the connecting end frame is connected with the steel box girder of the building, the telescopic pipe and the telescopic auxiliary pipe 3 which are connected with the connecting component in advance are installed between the two connecting end frames, the bolt plug 25 is screwed down relative to the communicating elbow 24, the damping fluid is filled into the main damping chamber and the telescopic auxiliary pipe 3 through the communicating elbow 24, before filling damping liquid, damping liquid with different concentrations is selected according to the size of a building steel box girder and the load of a bridge, after the damping liquid is filled, a bolt plug 25 is screwed into a communication elbow 24 to plug the communication elbow 24 again, after a telescopic pipe and a telescopic auxiliary pipe 3 are installed, a front seat cover 4 and a rear seat cover 5 are installed at the top ends of two connecting end frames respectively, then a grid frame assembly is placed between the front seat cover 4 and the rear seat cover 5, a connecting groove at the bottom end of a middle grid frame 15 is sleeved on a vertical rod 23, two connecting rods 6 are inserted into a strip hole on the front seat cover 4 and a strip hole of the rear seat cover 5 respectively, during the insertion process of the two connecting rods 6, a top piece 21 and a spring 20 are inserted into the strip holes until the connecting rods 6 are inserted into the strip holes, then the fixing of the connecting rods 6 in the two strip holes is realized by rotating a positioning bolt 7, and the installation of the external prestress buffer device of the building steel box girder is completed, this external prestressing force buffer of building steel box girder installs the completion after, when two building steel box girders produced external stress, a plurality of flexible pipes and a plurality of flexible auxiliary tube 3 mutually supported and offset the stress that comes from the transmission of building steel box girder between two connecting end framves, a plurality of flexible pipes and a plurality of flexible auxiliary tube 3 stress offset the in-process and can change flexible pipe and flexible auxiliary tube 3's length, can drive the change of the relative distance between grid 15 in every adjacent two in a plurality of grid 15 through montant 23 in a plurality of flexible pipe and a plurality of flexible auxiliary tube 3 length change processes, realize the sheltering from of the gap between two building steel box girders in the stress change process.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an external prestressing force buffer of building steel box girder, includes a plurality of flexible pipes, its characterized in that: the damping device is characterized by further comprising two connecting end frames, each telescopic pipe comprises a main damping rod (1) and a main damping pipe (2), the main damping rods (1) are arranged inside the main damping pipes (2), the main damping rods (1) and the main damping pipes (2) are matched to form a main damping chamber, a plurality of telescopic auxiliary pipes (3) are arranged between the two connecting end frames, the main damping rods (1), the main damping pipes (2) and the telescopic auxiliary pipes (3) are respectively connected with the connecting end frames through a plurality of connecting assemblies, the connecting assemblies respectively comprise a plurality of hinged frames (12), the hinged frames (12) are respectively and fixedly connected with two connecting lugs (13), the connecting lugs (13) are respectively and fixedly connected with an upper beam rod (8), a lower beam rod (9) and a bevel edge rod (11), the hinged frames (12) are respectively and rotatably connected with the main damping rods (1), the main damping pipes (2) and the telescopic auxiliary pipes (3), a plurality of front seat sleeves (4) and a plurality of rear seat sleeves (5) and a plurality of upper beam sleeves (9) and a lower beam (9) are respectively and connected with two symmetrical upper beam rods (8) and two connecting end frames (10), the front seat cover (4) and the rear seat cover (5) are respectively fixedly connected to the two upper beam rods (8), one ends, close to each other, of the front seat cover (4) and the rear seat cover (5) are respectively provided with a strip hole, a grid assembly connected with the main damping tube (2) is arranged between the front seat cover (4) and the rear seat cover (5), two connecting rods (6) are arranged in the grid assembly, one ends, far away from the grid assembly, of the two connecting rods (6) are respectively inserted into the two strip holes, one ends, far away from the grid assembly, of the two connecting rods (6) are respectively provided with an elastic assembly, the grid assembly comprises two edge grids (14) and a plurality of middle grids (15), two grid frame (14) are connected with two connecting rods (6) respectively, all are connected through biconvex pole (16) between grid frame (15) in every adjacent two in a plurality of well grid frame (15), be close to in a plurality of grid frame (15) two of both sides in grid frame (15) and be connected with two grid frame (14) through two limit protrusion poles (17) respectively, install limit closing piece (18) between grid frame (15) in two grid frame (14) and a plurality of well grid frame (15) that are close to edge grid frame (14), all install well closing piece (19) between grid frame (15) in every adjacent two in a plurality of grid frame (15), all threaded connection has on front seat cover (4) and back seat cover (5) and is used for stabilizing elastic component Positioning bolt (7) elastic component include spring (20) and with positioning bolt (7) assorted head piece (21), the both ends of spring (20) respectively in connecting rod (6) and head piece (21) are connected, and spring (20) and head piece (21) all set up in the strip is downthehole.
2. The external prestress buffering device for the construction steel box girder of claim 1, which is characterized in that: fixedly connected with connecting plate (22) on main damping tube (2), fixedly connected with montant (23) on connecting plate (22), the bottom of well grid (15) seted up with montant (23) assorted spread groove, montant (23) set up in the spread groove.
3. The external prestress buffering device for the construction steel box girder of claim 2, which is characterized in that: the main damping pipe (2) and the telescopic auxiliary pipe (3) are communicated with a communication bent pipe (24), and the communication bent pipe (24) is in threaded connection with a bolt plug (25).
4. The external prestress buffering device for the construction steel box girder of claim 3, is characterized in that: inclined supporting rods (26) are fixedly connected to the two inclined side rods (11), the inclined supporting rods (26) are fixedly connected with the upper beam rod (8), and auxiliary supporting rods (27) are fixedly connected between the inclined supporting rods (26) and the lower beam rod (9).
5. The external prestress buffering device for the construction steel box girder of claim 4, which is characterized in that: a plurality of equal fixedly connected with oblique branch (28) between every two adjacent pole settings (10) in pole setting (10), the top and the bottom of oblique branch (28) respectively with upper beam pole (8) and underbeam pole (9) fixed connection.
6. An external prestress buffer device for a building steel box girder and a construction process are characterized in that the external prestress buffer device for the building steel box girder according to any one of claims 1 to 5 is used, and comprises the following steps:
s1, in the construction and installation process of the external prestress buffering device for the building steel box girder, an upper girder rod (8), a lower girder rod (9) and a bevel edge rod (11) are blanked and welded into a connecting end frame according to the size of the building steel box girder, then the blanking of an inclined stay bar (26), an auxiliary stay bar (27) and an inclined strut bar (28) is realized according to the size of the connecting end frame, the blanked inclined stay bar (26), the auxiliary stay bar (27) and the inclined strut bar (28) are welded in the connecting end frame, the reinforcement of the connecting end frame is completed, and the two connecting end frames are respectively connected with two sections of building steel box girders which need to be connected with each other;
s2, after the connection of the connecting end frames and the construction steel box girder is completed, a telescopic pipe and a telescopic auxiliary pipe (3) which are connected with a connecting assembly in advance are installed between the two connecting end frames, a bolt plug (25) is screwed down relative to a communication bent pipe (24), damping liquid is filled into a main damping chamber and the telescopic auxiliary pipe (3) through the communication bent pipe (24), damping liquid with different concentrations is selected according to the size of the construction steel box girder and the load of a bridge before the damping liquid is filled, the bolt plug (25) is screwed into the communication bent pipe (24) after the damping liquid is filled, and the communication bent pipe (24) is plugged again;
s3, after the telescopic pipe and the telescopic auxiliary pipe (3) are installed, a front seat cover (4) and a rear seat cover (5) are installed at the top ends of two connecting end frames respectively, then a grid frame assembly is placed between the front seat cover (4) and the rear seat cover (5), a connecting groove at the bottom end of a middle grid frame (15) is sleeved on a vertical rod (23), two connecting rods (6) are respectively inserted into a strip hole in the front seat cover (4) and a strip hole in the rear seat cover (5), in the inserting process of the two connecting rods (6), a top piece (21) and a spring (20) are firstly inserted into the strip holes until the connecting rods (6) are inserted into the strip holes, then the fixing of the connecting rods (6) in the two strip holes is realized by rotating a positioning bolt (7), and the installation of the external prestress buffering device of the building steel box girder is completed;
s4, after the installation of the external prestress buffering device for the building steel box girder is completed, when two building steel box girders generate external stress, a plurality of telescopic pipes and a plurality of telescopic auxiliary pipes (3) are matched with each other to offset the stress transmitted from the building steel box girder between two connecting end frames, the lengths of the telescopic pipes and the telescopic auxiliary pipes (3) can be changed in the stress offsetting process of the telescopic pipes and the telescopic auxiliary pipes (3), and the relative distance between every two adjacent middle grids (15) in a plurality of middle grids (15) can be changed in the length changing process of the telescopic pipes and the telescopic auxiliary pipes (3) through a vertical rod (23), so that the shielding of a gap between the two building steel box girders in the stress changing process is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110790014.8A CN113373796B (en) | 2021-07-13 | 2021-07-13 | External prestress buffering device for building steel box girder and construction process |
Applications Claiming Priority (1)
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| CN112323628A (en) * | 2020-09-14 | 2021-02-05 | 鲲鹏建设集团有限公司 | Shaped suspended formwork assembly in steel box girder matrix and using method thereof |
| CN112695952A (en) * | 2020-12-25 | 2021-04-23 | 湖北正浩建设集团有限公司 | Building roof truss support structure and construction method |
| CN112813855A (en) * | 2021-01-22 | 2021-05-18 | 广州珠江黄埔大桥建设有限公司 | Damping type elastic support disposal method for cracking disease of steel box girder inclined web member |
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| US5241721A (en) * | 1990-10-11 | 1993-09-07 | Societe Centrale D'etudes Et De Scetauroute Realisations Routiers | Method of constructing a cable-stayed bridge composed of an assembly of voussoirs |
| CN101117791A (en) * | 2007-08-22 | 2008-02-06 | 中铁大桥局股份有限公司 | Abnormal shape steel case and orthotropic plate bottom formwork combined type moving die carrier framework and construction method thereof |
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| CN112695952A (en) * | 2020-12-25 | 2021-04-23 | 湖北正浩建设集团有限公司 | Building roof truss support structure and construction method |
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