CN210766433U - Trapezoidal hanging basket structure - Google Patents
Trapezoidal hanging basket structure Download PDFInfo
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- CN210766433U CN210766433U CN201921214169.1U CN201921214169U CN210766433U CN 210766433 U CN210766433 U CN 210766433U CN 201921214169 U CN201921214169 U CN 201921214169U CN 210766433 U CN210766433 U CN 210766433U
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Abstract
The utility model discloses a trapezoidal hanging basket structure, which belongs to the technical field of bridge construction, and comprises a main truss, a suspension and anchoring system, a template system and a traveling system, wherein the main truss and the template system both horizontally move on a poured beam section through the traveling system, the main truss is an isosceles trapezoid truss structure, the main truss comprises an upper cross bar, a lower cross bar, a front hanging beam and an inclined strut, and two ends of the inclined strut are respectively fixed with the upper cross bar and the lower cross bar; the two main trusses are arranged in parallel, the two main trusses are both installed on the bridge floor of the cast beam section, a connecting rod is arranged between the two main trusses, the two main trusses are connected through the connecting rod, and the front hanging beam is fixed at the front ends of the two main trusses; the template system is fixed below the front hanging beam through the suspension and anchoring system, and the problem that the main truss support strength of the existing triangular composite beam hanging basket structure is poor is solved.
Description
Technical Field
The utility model relates to a bridge construction technical field, in particular to trapezoidal basket structure of hanging.
Background
When crossing large valleys and large rivers, the design scheme of a large-span prestressed concrete box girder bridge (a continuous rigid frame, a continuous box girder and the like) is often selected. The height of the upper box girder at the root beam section is generally about 10m, and the maximum height reaches 14.5m at present. The box girder is usually constructed by hanging basket suspension casting.
The hanging basket is the main equipment in cantilever construction, and can be divided into 4 types of truss type, inclined pull type, section steel type and mixed type according to the structural form. The existing hanging basket is generally a triangular combined beam hanging basket structure, a main truss of the structure is triangular, the supporting strength is poor, and deformation is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a trapezoidal basket structure of hanging, it has solved the relatively poor problem of main truss support intensity that present triangle-shaped combination beam hung basket structure.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a trapezoidal hanging basket structure comprises a main truss, a suspension and anchoring system, a template system and a walking system, wherein the main truss and the template system both horizontally move on a poured beam section through the walking system, the main truss is of an isosceles trapezoid truss structure and comprises an upper cross bar, a lower cross bar, a front suspension cross bar and an inclined strut, and two ends of the inclined strut are respectively fixed with the upper cross bar and the lower cross bar;
the two main trusses are arranged in parallel, the two main trusses are both installed on the bridge floor of the cast beam section, a connecting rod is arranged between the two main trusses, the two main trusses are connected through the connecting rod, and the front hanging beam is fixed at the front ends of the two main trusses;
the template system is fixed below the front hanging beam through the suspension and anchoring system.
By adopting the structure, the trapezoidal main truss hanging basket has the advantages of reasonable structure, clear stress, large vertical rigidity, small deformation of the main truss, relatively few rods, capability of effectively reducing the height of the main truss, simplicity and convenience in operation, flexibility in walking, capability of adapting to the change of various beam sections, rapidness in installing and detaching the template and erecting the template, auxiliary working time, capability of improving the working efficiency and saving labor cost in a large number. Adopt trapezium structure to reduce string basket height, then corresponding reasonable the reduction the length of suspender, the jib of its front suspension system, reduced the deformation of jib simultaneously, construction operation height and the degree of difficulty reduce, guarantee construction safety and improvement work efficiency.
The method is further optimized as follows: the suspension and anchoring system comprises a main truss anchoring system, a track anchoring system, a bottom basket suspension and anchoring system, an outer die suspension and anchoring system and an inner die suspension and anchoring system;
the main truss anchoring system and the track anchoring system are anchored by taking finish rolling twisted steel bars or steel strands as anchoring parts and vertical prestressed steel bars or steel bundles of box girders as anchoring reaction points and pre-tightening the steel bars or steel bundles;
the suspension and anchoring of the bottom basket suspension and anchoring system, the outer mold suspension and anchoring system and the inner mold suspension and anchoring system are realized by using 16Mn steel plates as suspension belts and finish-rolled twisted steel bars as suspension rods.
The method is further optimized as follows: the walking system comprises a main beam walking system and an internal model walking system;
the main beam walking system comprises a jack, a front pivot sliding seat, a rear anchor point reverse buckling roller support, a track and an outer mold walking beam, wherein the track is fixed on the bridge floor of the poured beam section, a sliding plate type support is adopted as a front pivot of the hanging basket, the front pivot sliding seat is welded in the middle of the main truss, the reverse buckling roller support is adopted as a rear anchor point after the hanging basket walks, the rear anchor point reverse buckling roller support is welded at the tail of the main truss, the front pivot sliding seat and the rear anchor point reverse buckling roller support are respectively in sliding fit with the track, and the jack is used for pushing the main truss to horizontally move along the track;
the front end of the external mold walking beam is suspended below a front suspended cross beam of the main truss through the external mold suspension and anchoring system, and the rear end of the external mold walking beam is suspended on the top surface of a wing plate of the cast beam section through the external mold suspension and anchoring system;
the internal mold walking system comprises an internal mold walking beam, the front end of the internal mold walking beam is suspended below a front suspension cross beam of the main truss through the internal mold suspension and anchoring system, and the rear end of the internal mold walking beam is suspended on the top surface of the top plate of the poured beam section through the internal mold suspension and anchoring system.
The method is further optimized as follows: the template system comprises an outer template, an inner template and a bottom template;
a bottom basket is arranged below the cast beam section, the bottom basket is suspended below a front hanging beam through a bottom basket suspension and anchoring system, the bottom template is supported on the bottom basket, the front end of the bottom template is suspended below a front hanging beam through the bottom basket suspension and anchoring system, and the rear end of the bottom template is anchored on the top surface of the bottom plate of the cast beam section through the bottom basket suspension and anchoring system;
the outer template is vertically divided into sections, the sections are connected through bolts, and the outer template is supported on the outer mold walking beam;
the inner formwork comprises an inner top formwork and an inner side formwork, a supporting bracket is arranged below the inner top formwork, walking wheels are mounted on the supporting bracket, and the supporting bracket moves back and forth on the inner formwork walking beam through the walking wheels.
To sum up, the utility model discloses following beneficial effect has: the trapezoidal main truss hanging basket has the advantages of being reasonable in structure, clear in stress, large in vertical rigidity, small in deformation of the main truss, relatively few in rod pieces, capable of effectively reducing the height of the main truss, simple and convenient to operate, flexible to walk, capable of adapting to changes of various beam sections, fast in formwork mounting and dismounting and formwork erecting, short in auxiliary working time, capable of improving working efficiency and greatly saving labor cost. Adopt trapezium structure to reduce string basket height, then corresponding reasonable the reduction the length of suspender, the jib of its front suspension system, reduced the deformation of jib simultaneously, construction operation height and the degree of difficulty reduce, guarantee construction safety and improvement work efficiency. The hanging basket walks in two steps, namely, the main truss (carrying the outer template and the bottom template synchronously) walks firstly, and then the inner template walks. The main truss is used for bearing the total weight of the cradle, and the main truss is in a sliding and rolling combined mode during walking, so that the walking is stable and safe, and the traction force is small. The inner template adopts a pure rolling mode for walking due to small weight, and has simple operation and low labor intensity. The suspension and anchoring system adopts 16Mn material as the bearing suspension belt, reduces the flexural deformation of the suspension basket, increases the rigidity of the suspension basket, ensures that the suspension basket does not need to adjust the suspension belt to reduce the flexural deformation in the concrete pouring process of the ultrahigh box girder, improves the control precision of the elevation of the girder section, avoids the interference on the internal stress of the box girder, and ensures the internal quality of the box girder. Meanwhile, the finish-rolled deformed steel bar is used as the adjusting suspender and the anchoring part, so that the labor intensity of hanging the basket vertical die is reduced, and the vertical die and the hanging basket are anchored more conveniently, more quickly and simply.
Drawings
FIG. 1 is an elevation view of an embodiment, primarily intended to embody the structure of a pannier;
FIG. 2 is a side view of the embodiment, mainly used for embodying the structure of the hanging basket;
FIG. 3 is a sectional view taken along line A-A of FIG. 1, and is primarily used to embody the structure of the pannier;
fig. 4 is a sectional view taken along line B-B in fig. 3, which is mainly used for embodying the structure of the hanging basket.
In the figure, 1, a main truss; 11. an upper cross bar; 12. a lower cross bar; 13. a front hanging beam; 14. a diagonal brace; 2. a suspension and anchoring system; 21. a rail anchoring system; 22. a bottom basket suspension and anchoring system; 23. an outer mold suspension and anchoring system; 24. an internal mold suspension and anchoring system; 3. a template system; 31. an outer template; 32. an inner template; 33. a bottom template; 4. a traveling system; 41. a main beam traveling system; 411. a track; 412. an outer mold walking beam; 42. an internal mold traveling system; 5. a connecting rod; 6. a support bracket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a ladder-shaped hanging basket structure, refer to fig. 1, 2, 3 and 4, comprises a main truss 1 and a suspension and anchoring system 2A template system 3 and a walking system 4. The main truss 1 and the template system 3 move back and forth on the poured beam section through the traveling system 4. The main truss 1 is a main bearing structure for box girder suspension casting construction, the main truss 1 is an isosceles trapezoid truss structure, and the main truss 1 comprises an upper cross bar 11, a lower cross bar 12, a front hanging cross beam 13 and an inclined stay bar 14. The diagonal bar 14 is positioned between the upper cross bar 11 and the lower cross bar 12, and two ends of the diagonal bar 14 are respectively fixed with the upper cross bar 11 and the lower cross bar 12. Four diagonal braces 14 are arranged, and the four diagonal braces 14 are respectively fixed with the upper cross bar 11 and the lower cross bar 12. The two main trusses 1 are arranged in parallel, the two main trusses 1 are installed on a bridge deck of a poured beam section, two connecting rods 5 are arranged between the two main trusses 1 in the front and back direction, and the two connecting rods 5 are fixed with the upper cross rods 11 on the two main trusses 1 respectively. The two main trusses 1 are connected through a connecting rod 5, and a front hanging beam 13 is fixed at the front ends of upper cross rods 11 of the two main trusses 1. The upper cross bar 11 and the lower cross bar 12 both adopt two groups I36bThe front hanging beam 13 is formed by welding two I45bAnd (4) forming.
Referring to fig. 1, 2, 3 and 4, the formwork system 3 is fixed below the front hanging beam 13 by the suspension and anchoring system 2, and the suspension and anchoring system 2 includes a main truss anchoring system, a rail anchoring system 21, a bottom basket suspension and anchoring system 22, an outer mold suspension and anchoring system 23 and an inner mold suspension and anchoring system 24. The main truss anchoring system and the rail anchoring system 21 are anchored by using finish rolled twisted steel bars or steel strands as anchoring members, using vertical prestressed steel bars or steel bundles of box girders as anchoring reaction points, and pre-tightening. The suspension and anchoring of the bottom basket suspension and anchoring system 22, the outer mold suspension and anchoring system 23 and the inner mold suspension and anchoring system 24 are realized by using 16Mn steel plates as suspension belts and finish-rolled threaded steel bars as suspension rods. All parts of the main truss 1 are anchored and connected through finish rolling twisted steel bars or steel strands of the main truss anchoring system.
Referring to fig. 1, 2, 3 and 4, the traveling system 4 includes a main beam traveling system 41 and an internal mold traveling system 42. The main beam walking system 41 comprises a jack, a front support point slide carriage, a rear anchor point reverse buckling roller support, a rail 411 and an outer mold walking beam 412. A sliding plate type support is adopted as a front supporting point of the hanging basket, a front supporting point sliding seat is welded in the middle of the main truss 1, a left-hand thread roller support is adopted as an anchor point after the hanging basket travels, and the left-hand thread roller support is welded at the tail of the main truss 1. The rail 411 is anchored on the bridge deck of the poured beam section through finish rolling twisted steel bars or steel strands of the rail anchoring system 21, and the front support point sliding seat and the rear anchor point back-off roller support are respectively in sliding fit with the rail 411. The jack is used for pushing the main truss 1 to horizontally move along the rail 411, two 10T penetrating jacks controlled by an oil pump are matched with steel strands to synchronously pull the front fulcrum sliding seat forwards, so that the front fulcrum sliding seat and the rear anchor point reverse buckling roller support synchronously move forwards along the rail 411 in a walking mode of combining front sliding and rear rolling, and the main truss 1 can walk more stably and safely. The front end of the external mold walking beam 412 is suspended below the front suspension cross beam 13 of the main truss 1 through the suspension rod of the external mold suspension and anchoring system 23, and the rear end of the external mold walking beam 412 is suspended on the top surface of the cast beam section wing plate through the suspension rod of the external mold suspension and anchoring system 23. The internal mold walking system 42 comprises an internal mold walking beam, the front end of the internal mold walking beam is suspended below the front suspension cross beam 13 of the main truss 1 through a suspender of the internal mold suspension and anchoring system 24, and the rear end of the internal mold walking beam is suspended on the top surface of the top plate of the poured beam section through the suspender of the internal mold suspension and anchoring system 24.
Referring to fig. 1, 2, 3, and 4, the template system 3 includes an outer template 31, an inner template 32, and a bottom template 33. Below the cast beam section there is a bottom basket suspended below the front suspension cross beam 13 of the main girder 1 by means of suspension straps (booms) of a bottom basket suspension and anchoring system 22. The bottom template 33 is supported on the bottom basket, the front end of the bottom template 33 is suspended below the front suspension cross beam 13 through a hanging strip of the bottom basket suspension and anchoring system 22, and the rear end of the bottom template 33 is anchored on the top surface of the bottom plate of the cast beam section through the hanging strip of the bottom basket suspension and anchoring system 22. The outer formwork 31 is vertically divided into sections, the sections are connected through bolts, the steel space truss structure is adopted, and the outer formwork 31 is supported on the outer formwork walking beam 412. Under the traction of the jacks, the outer formworks 31 and the bottom formworks 33 integrally move together with the main girder 1. The inner formwork 32 comprises an inner top formwork and an inner side formwork, the inner formwork 32 is formed by assembling a combined steel mould and a special-shaped corner steel mould, and a framework is attached to the inner formwork. A supporting bracket 6 is fixed below the inner top die, a walking wheel is mounted on the supporting bracket 6, and the supporting bracket 6 moves back and forth on the inner die walking beam through the walking wheel.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (4)
1. The utility model provides a trapezoidal string of basket structure, includes main truss (1), suspends and anchor system (2), template system (3) and traveling system (4) in midair, main truss (1) with template system (3) all through traveling system (4) horizontal migration on the roof beam section that has watered, characterized by: the main truss (1) is of an isosceles trapezoid truss structure, the main truss (1) comprises an upper cross bar (11), a lower cross bar (12), a front hanging cross beam (13) and an inclined strut (14), and two ends of the inclined strut (14) are respectively fixed with the upper cross bar (11) and the lower cross bar (12);
the two main trusses (1) are arranged in parallel, the two main trusses (1) are installed on the bridge floor of the poured beam section, a connecting rod (5) is arranged between the two main trusses (1), the two main trusses (1) are connected through the connecting rod (5), and the front hanging beam (13) is fixed at the front ends of the two main trusses (1);
the template system (3) is fixed below the front hanging beam (13) through the hanging and anchoring system (2).
2. The ladder-shaped hanging basket structure as recited in claim 1, wherein: the suspension and anchoring system (2) comprises a main truss anchoring system, a track anchoring system (21), a bottom basket suspension and anchoring system (22), an outer die suspension and anchoring system (23) and an inner die suspension and anchoring system (24);
the main truss anchoring system and the track anchoring system (21) use finish rolling threaded steel bars or steel strands as anchoring parts, use vertical prestressed steel bars or steel bundles of box girders as anchoring reaction points, and realize anchoring through pre-tightening;
the suspension and the anchoring of the bottom basket suspension and anchoring system (22), the outer mold suspension and anchoring system (23) and the inner mold suspension and anchoring system (24) are realized by using 16Mn steel plates as suspension belts and finish-rolled threaded steel bars as suspension rods.
3. The ladder-shaped hanging basket structure as recited in claim 2, wherein: the walking system (4) comprises a main beam walking system (41) and an internal mold walking system (42);
the main beam walking system (41) comprises a jack, a front pivot sliding seat, a rear anchor point reverse buckling roller support, a rail (411) and an outer mold walking beam (412), wherein the rail (411) is fixed on the bridge floor of the poured beam section, a sliding plate type support is adopted as a front pivot of a hanging basket, the front pivot sliding seat is welded in the middle of the main truss (1), the rear anchor point after the hanging basket walks adopts the reverse buckling roller support, the rear anchor point reverse buckling roller support is welded at the tail of the main truss (1), the front pivot sliding seat and the rear anchor point reverse buckling roller support are respectively in sliding fit with the rail (411), and the jack is used for pushing the main truss (1) to horizontally move along the rail (411);
the front end of the external mold walking beam (412) is suspended below a front suspended cross beam (13) of the main truss (1) through the external mold suspension and anchoring system (23), and the rear end of the external mold walking beam (412) is suspended on the top surface of a wing plate of the cast beam section through the external mold suspension and anchoring system (23);
the internal mold walking system (42) comprises an internal mold walking beam, the front end of the internal mold walking beam is suspended below a front suspension cross beam (13) of the main truss (1) through the internal mold suspension and anchoring system (24), and the rear end of the internal mold walking beam is suspended on the top surface of a top plate of the poured beam section through the internal mold suspension and anchoring system (24).
4. The ladder-shaped hanging basket structure as recited in claim 3, wherein: the template system (3) comprises an outer template (31), an inner template (32) and a bottom template (33);
a bottom basket is arranged below the cast beam section, the bottom basket is suspended below the front hanging beam (13) through the bottom basket suspension and anchoring system (22), the bottom template (33) is supported on the bottom basket, the front end of the bottom template (33) is suspended below the front hanging beam (13) through the bottom basket suspension and anchoring system (22), and the rear end of the bottom template (33) is anchored on the top surface of the bottom plate of the cast beam section through the bottom basket suspension and anchoring system (22);
the outer formwork (31) is vertically divided into sections, the sections are connected through bolts, and the outer formwork (31) is supported on the outer formwork walking beam (412);
the inner formwork (32) comprises an inner top formwork and an inner side formwork, a supporting bracket (6) is arranged below the inner top formwork, a walking wheel is installed on the supporting bracket (6), and the supporting bracket (6) moves back and forth on the inner formwork walking beam through the walking wheel.
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| CN201921214169.1U CN210766433U (en) | 2019-07-30 | 2019-07-30 | Trapezoidal hanging basket structure |
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| CN201921214169.1U CN210766433U (en) | 2019-07-30 | 2019-07-30 | Trapezoidal hanging basket structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892543A (en) * | 2022-06-01 | 2022-08-12 | 中国十九冶集团有限公司 | Construction method of bridge closure device |
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- 2019-07-30 CN CN201921214169.1U patent/CN210766433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892543A (en) * | 2022-06-01 | 2022-08-12 | 中国十九冶集团有限公司 | Construction method of bridge closure device |
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