CN217839735U - Quick hoisting construction structure for steel box girder closure section - Google Patents
Quick hoisting construction structure for steel box girder closure section Download PDFInfo
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- CN217839735U CN217839735U CN202222083246.2U CN202222083246U CN217839735U CN 217839735 U CN217839735 U CN 217839735U CN 202222083246 U CN202222083246 U CN 202222083246U CN 217839735 U CN217839735 U CN 217839735U
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- box girder
- carrying pole
- prefabricated box
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Abstract
The utility model discloses a steel box girder folds section quick hoist and mount construction structures, including setting up in the shoulder pole roof beam at folding section prefabricated box girder both ends, shoulder pole roof beam one end with fold section prefabricated box girder and fix and link to each other, the other end extends to fold outside the section prefabricated box girder and the overlap joint is at the cantilever end department of folding section both sides prefabricated box girder, fold section prefabricated box girder articulates and fixes temporarily in folding the position through the shoulder pole roof beam at both ends, and fold section prefabricated box girder and its both sides and accomplish the prefabricated box girder concatenation position of hoist and mount construction and pass through the splice plate and the fixed mode that links to each other with the on-the-spot connecting bolt that excels in. The utility model discloses simple structure, design benefit utilizes the shoulder pole principle, will wait to fold segment prefabricated steel case roof beam through the shoulder pole roof beam and hang fast and locate and fold the position, then adopt the mode of the on-the-spot connection of punching to carry out follow-up construction, have nimble convenient, practice thrift the cost, fold fast, practice thrift time limit for a project, safe and reliable, to current vehicle influence advantage such as little.
Description
Technical Field
The utility model relates to a bridge construction technical field, concretely relates to steel box girder folds quick hoist and mount construction structures of section.
Background
Along with the rapid development of science and technology, the number of large-span overpasses built on municipal roads, expressways and the like is increased, and the structural forms of the overpasses are also diversified. The construction of the overpass is except adopting traditional simple beam precast concrete beam structure, cantilever casting concrete structure and cast-in-place concrete beam structure roof beam, because of the steel box girder has the installation rate faster, the construction quality obtains guaranteeing easily, has better anti-seismic performance, the steel construction dead weight is lighter, steel recycle, advantages such as green, the more and more adoption of girder steel prefabrication of long-span overpass assembles the structure.
However, the steel box girders of most large-span overpass bridges need to be broken or guided for hoisting and splicing, so that construction is difficult, and especially urban construction often does not meet conditions. The problem is always a great problem to be solved urgently in hoisting of the long-span overline bridge. Especially, when a newly-built large-span bridge spans some traffic important roads such as expressways, main roads and the like, due to the fact that traffic flow is large, the influence of broken traffic construction on the crossed roads is large, and therefore construction time is reduced as far as possible. However, the conventional prefabricated steel box girder adopts a mounting mode of pre-punching and then hoisting and splicing, and in the actual construction process, the problem that hole sites cannot be aligned due to insufficient punching precision and then work is lost and hoisting time is delayed is easily caused by the mounting mode.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steel box girder folds quick hoist and mount construction structures of section to solve in the background art technical problem.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a steel box girder closes up quick hoist and mount construction structures of section, is including setting up the shoulder pole roof beam at the prefabricated box girder both ends of closure section, shoulder pole roof beam one end with close up the prefabricated box girder of section and fix and link to each other, the other end extends to outside the prefabricated box girder of closure section and overlap joint at the cantilever end department of the prefabricated box girder of closure section both sides, closes up the prefabricated box girder of section and articulates and temporarily fix in the closure position through the shoulder pole roof beam at both ends, and closes up the prefabricated box girder of section and the prefabricated box girder splice position that its both sides accomplished hoist and mount construction and pass through splice plate and high strength connecting bolt and fix continuous with the mode of punching on the spot.
Preferably, in order to improve the stability of the lap joint, the carrying pole beams are arranged in pairs, and the two carrying pole beams arranged in pairs are correspondingly arranged on two sides of the end part of the same precast box beam.
Preferably, in order to improve the structural strength of the carrying pole beam, the carrying pole beam is made of I-shaped steel, and the carrying pole beam made of the I-shaped steel is fixedly connected with the folding section prefabricated box girder through a high-strength connecting bolt.
Preferably, the lower flange of the I-steel-material carrying pole beam is attached to and fixed on the top plate of the precast box girder, and the positions of the I-steel-material carrying pole beam and the precast box Liang Shuanjie are not less than two positions so as to ensure the connection stability of the carrying pole beam and the precast box girder.
Preferably, in order to improve the connection strength, an expanded wing plate extending outwards is arranged at the lower flange of the I-shaped steel pole beam and the precast box Liang Shuanjie.
Preferably, in order to prevent the deformation of the precast box Liang Shousun, the bolting positions of the I-shaped steel pole beam and the precast box beam are arranged corresponding to the diaphragm plates of the precast box beam.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of simple structure, design benefit, utilize the shoulder pole principle, will wait to fold section prefabricated steel case roof beam through the shoulder pole roof beam and hang fast and locate and fold the position, then it is fixed to adopt the car of ascending a height to carry out the connection between prefabricated case roof beam preparation section, the mode that the on-the-spot punching was all adopted to the connecting bolt hole between the case, the problem of prefabricated bolt hole and then the worker of nest that leads to and the engineering time delay that leads to because of the unable centering that precision problems leads to has been reduced, the case roof beam hoist and mount time of taking one's place can be shortened greatly, the difficult problem that hoist case Liang Gelong section length occupy the current road on the road has been solved, and is nimble convenient, save the cost, fold fast, practice thrift the time limit for a project, safe and reliable, influence advantage such as little to current vehicle.
Drawings
The above and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and not by way of limitation, wherein:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic top view of the connection node of the precast box girder and the carrying pole girder of the present invention;
fig. 3 is a schematic longitudinal sectional structure view of the connection node of the precast box girder and the carrying pole girder of the present invention;
FIG. 4 is a schematic cross-sectional structure view of the splicing node of the precast box girder of the present invention;
fig. 5 is the schematic view of the construction process of the present invention.
Reference numerals: 1-precast box girder, 2-carrying pole girder, 3-high strength connecting bolt, 4-splice plate, 5-pier, 6-temporary support and 7-built road.
Detailed Description
Hereinafter, the embodiment of the utility model discloses a steel box girder closes up quick hoist and mount construction structures of section will be described with the accompanying drawings. The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
In the description of the present invention, it should be noted that the terms "top", "bottom", "upper", "lower", "inner", "outer", "lateral", "longitudinal", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It should be noted that for the sake of clarity in showing the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
The principles and features of the present invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to explain the present invention and not to limit the scope of the invention. The preferred embodiments of the present invention will be described in further detail below with reference to fig. 1-5:
as shown in fig. 1, the utility model discloses an optimal quick hoist and mount construction structure of steel box girder closure segment, including setting up in the shoulder pole roof beam 2 at closure segment precast box girder 1 both ends, shoulder pole roof beam 2 one end is fixed with closure segment precast box girder 1 and is linked to each other, and the other end extends outside closure segment precast box girder 1 and overlap joint in the cantilever end department of closure segment both sides precast box girder 1, and shoulder pole roof beam 2 sets up in pairs, and two shoulder pole roof beams 2 that set up in pairs correspond and set up in same precast box girder 1 tip both sides, closure segment precast box girder 1 articulates and fixes temporarily in the closure position through the shoulder pole roof beam 2 at both ends, and closure segment precast box girder 1 and its both sides prefabricated box girder 1 splice position that has accomplished the hoist and mount construction are fixed continuous through splice plate 4 and high strength connecting bolt 3 with the mode of punching on the spot;
as shown in fig. 2-4, in order to ensure the stability of the hoisting construction structure, the carrying pole beam 2 is made of i-steel, the carrying pole beam 2 made of i-steel is fixedly connected with the folding section precast box beam 1 through a high-strength connecting bolt 3, the lower flange of the carrying pole beam 2 made of i-steel is attached and fixed on the top plate of the precast box beam 1, the bolting positions of the carrying pole beam 2 made of i-steel and the precast box beam 1 are not less than two positions, the bolting position of the carrying pole beam 2 made of i-steel and the precast box beam 1 is arranged corresponding to the diaphragm of the precast box beam 1, the lower flange of the bolting position of the carrying pole beam 2 made of i-steel and the precast box beam 1 is provided with an extended wing plate extending outwards, the type, the specification, the length and the size of the carrying pole beam 2 made of i-steel are determined by calculation according to the weight of the manufacturing section of the hoisting precast box beam 1, of course, according to the mechanical properties of the material structure, the carrying pole beam 2 can be made of other materials except for the folding section, and the length of the carrying pole beam 1 suspended from which is determined by calculation of the cross-span structure deformation.
As shown in fig. 5, the utility model discloses a concrete construction process includes following step, I-steel shoulder pole roof beam 2 preparation → I-steel shoulder pole roof beam 2 with prefabricated box girder 1 factory connect → prefabricated box girder 1 transportation → fold section both sides prefabricated box girder 1 hoist and mount (with prefabricated box girder 1 both ends overlap joint on pier 5 or temporary support 6) → built road 7 top fold section prefabricated box girder 1 hoist and mount overlap joint → fold section prefabricated box girder 1 preparation section and the overlap joint of sidespan cantilever steel beam preparation.
After the I-shaped steel carrying pole beam 2 is processed, the I-shaped steel carrying pole beam 2 is connected with a manufacturing section of the prefabricated box beam 1 in advance in a factory, firstly, two I-shaped steel carrying pole beams 2 are installed at one end of the prefabricated box beam 1, after the I-shaped steel carrying pole beams are installed, two I-shaped steel carrying pole beams 2 are installed at the other end of the prefabricated box beam 1, the connection is bolted by 10.9S-grade high-strength large hexagon head bolts (GB 1228-1231-2006), the connecting position of each carrying pole beam 2 and the prefabricated box beam 1 is not less than two, and the number and specification of the connecting bolts, and the specification model and length of the I-shaped steel beams are determined through calculation.
And after the I-shaped steel carrying pole beam 2 is installed and accepted, the I-shaped steel carrying pole beam is transported to a construction site to be hoisted.
The prefabricated box girder 1 is hoisted by adopting a single machine or a double-machine hoisting (selected according to actual conditions), the size of a closure section and the size of the prefabricated box girder 1 are rechecked before hoisting, hoisting is started after rechecking is correct, the prefabricated box girder 1 of the closure section is slowly hoisted to be right above a closure span in the hoisting process, two-side specialists command to slowly lower the prefabricated steel girder 1 of the closure section to a closure position, the prefabricated steel girder is removed from hoisting equipment after the rechecking position is qualified, a splice plate 4 is installed and bolted by adopting a high-strength connecting bolt 3, a bolt hole is bolted by adopting on-site drilling, the problems of labor shrinkage and hoisting time delay caused by misalignment of a bolted hole can be avoided, and the hoisting connection of the prefabricated box girder 1 of the closure section is finally and quickly completed according to the method.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides a steel box girder closes up quick hoist and mount construction structures of section which characterized in that: the folding section prefabricated box girder comprises carrying pole beams (2) arranged at two ends of a folding section prefabricated box girder (1), one end of each carrying pole beam (2) is fixedly connected with the folding section prefabricated box girder (1), the other end of each carrying pole beam extends out of the folding section prefabricated box girder (1) and is lapped at cantilever ends of the folding section prefabricated box girders (1), the folding section prefabricated box girders (1) are hung and temporarily fixed at folding positions through the carrying pole beams (2) at the two ends, and the folding section prefabricated box girder (1) and the splicing positions of the folding section prefabricated box girders (1) with the two sides of which are subjected to hoisting construction are fixedly connected in a field punching mode through splicing plates (4) and high-strength connecting bolts (3).
2. The steel box girder closure segment rapid hoisting construction structure according to claim 1, characterized in that: the carrying pole beams (2) are arranged in pairs, and the two carrying pole beams (2) which are arranged in pairs are correspondingly arranged on the two sides of the end part of the same prefabricated box beam (1).
3. The steel box girder closure segment rapid hoisting construction structure according to claim 1, characterized in that: the carrying pole beam (2) is made of I-shaped steel, and the carrying pole beam (2) made of the I-shaped steel is fixedly connected with the folding section prefabricated box beam (1) through a high-strength connecting bolt (3).
4. The steel box girder closure segment rapid hoisting construction structure according to claim 3, characterized in that: the lower flange of the I-shaped steel carrying pole beam (2) is attached to and fixed on the top plate of the precast box beam (1), and the bolting positions of the I-shaped steel carrying pole beam (2) and the precast box beam (1) are not less than two.
5. The steel box girder closure section rapid hoisting construction structure according to claim 4, characterized in that: and an expanded wing plate extending outwards is arranged at the lower wing edge of the bolting position of the I-shaped steel carrying pole beam (2) and the precast box beam (1).
6. The steel box girder closure segment rapid hoisting construction structure according to claim 4, characterized in that: the bolting positions of the I-shaped steel carrying pole beam (2) and the precast box beam (1) correspond to the diaphragm plate of the precast box beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222083246.2U CN217839735U (en) | 2022-08-09 | 2022-08-09 | Quick hoisting construction structure for steel box girder closure section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222083246.2U CN217839735U (en) | 2022-08-09 | 2022-08-09 | Quick hoisting construction structure for steel box girder closure section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217839735U true CN217839735U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222083246.2U Active CN217839735U (en) | 2022-08-09 | 2022-08-09 | Quick hoisting construction structure for steel box girder closure section |
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| CN (1) | CN217839735U (en) |
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- 2022-08-09 CN CN202222083246.2U patent/CN217839735U/en active Active
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