CN219218682U - Ultra-wide bridge hanging basket structure - Google Patents
Ultra-wide bridge hanging basket structure Download PDFInfo
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- CN219218682U CN219218682U CN202120636698.1U CN202120636698U CN219218682U CN 219218682 U CN219218682 U CN 219218682U CN 202120636698 U CN202120636698 U CN 202120636698U CN 219218682 U CN219218682 U CN 219218682U
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Abstract
The utility model discloses an ultra-wide bridge hanging basket structure; the hanging basket structure is realized by adopting a plurality of groups of main bearing beams and upright posts so as to ensure the bearing requirement of the ultra-wide beam; the hanging basket structure is also provided with a hanging basket bottom platform; the main bearing beam is connected with the upright post through a cable-stayed belt, a bearing lower sliding rail is designed below the basket bottom platform, the transverse span of the bottom rail is reduced, and the weight of the overweight structure during walking is shared. The utility model solves the construction problem of any ultra-wide cantilever section beam; the utility model has the advantages that: the development of ultra-wide section suspension casting bridges is promoted; (2) The current stage of construction is changed into one-time segment pouring, so that the construction quality, progress and cost are ensured; (3) The utility model further improves the safety of hanging basket construction through the hanging basket structural design.
Description
Technical Field
The utility model relates to the field of civil engineering bridge construction, in particular to a hanging basket structural design suitable for bridge cantilever ultra-wide section construction.
Background
The hanging basket is the beginning of bridge construction large span, but traffic volume is increased greatly, ultra-wide bridge design is increased gradually at present, and the width of the concrete cantilever section casting bridge still is difficult to exceed the width of the steel structure bridge due to the reasons of hanging basket design construction limit and the like. The main ultra-wide hanging basket construction bridge at the present stage basically comprises the steps of pouring the whole section in a split mode, namely pouring a main girder box chamber firstly and then pouring a flange later. The conventional hanging basket design limits the ultra-wide concrete bridge design, and is complex in construction, low in efficiency and high in quality control difficulty.
Disclosure of Invention
Therefore, in order to solve the above-mentioned deficiency, the present utility model provides an ultra-wide bridge hanging basket structure; the utility model solves the construction problem of any ultra-wide cantilever section beam; the utility model has the advantages that: the development of ultra-wide section suspension casting bridges is promoted; (2) The current stage of construction is changed into one-time segment pouring, so that the construction quality, progress and cost are ensured; (3) The utility model further improves the safety of hanging basket construction through the hanging basket structural design.
The utility model is realized in such a way, and an ultra-wide bridge hanging basket structure is constructed, which is characterized in that; the hanging basket structure is realized by adopting a plurality of groups of main bearing beams and upright posts so as to ensure the bearing requirement of the ultra-wide beam; the hanging basket structure is also provided with a hanging basket bottom platform; the main bearing beam is connected with the upright post through a cable-stayed belt, a bearing lower sliding rail is designed below the basket bottom platform, the transverse span of the bottom rail is reduced, and the weight of the overweight structure during walking is shared.
The ultra-wide bridge hanging basket structure is characterized in that; when walking, a front supporting wheel and a rear pressing wheel are designed in front of and behind the main bearing beam to ensure the synchronous and safe walking of the ultra-wide hanging basket; the roller sliding friction is used for reducing the resistance to ensure the synchronism.
The ultra-wide bridge hanging basket structure is characterized in that; when the ultra-wide overweight segmental beam is constructed, a prestress applying part is designed on a bearing structure at the upper part of the hanging basket in order to meet the requirement of standard deflection.
The ultra-wide bridge hanging basket structure is characterized in that; the hanging basket structure is also provided with a front upper beam, a front lower beam and a rear lower beam; the ultra-wide hanging basket has high requirement on transverse rigidity, and the upper and lower cross beams of the hanging basket are designed by trusses to ensure the rigidity. The front upper beam corresponds to the main bearing beam, the front lower beam and the rear lower beam correspond to the lower part of the bottom platform of the hanging basket, and the front upper beam and the front lower beam are connected through a front hanging strip.
The ultra-wide bridge hanging basket structure is characterized in that; the front, middle and rear parts of the main carrier beam of the hanging basket are respectively provided with transverse connection to ensure the overall rigidity during walking, and walking deviation is strictly controlled during walking.
The ultra-wide bridge hanging basket structure is characterized in that; the transverse middle upright post of the hanging basket is connected by a steel truss, and the front upper cross beam, the front lower cross beam and the rear lower cross beam are all designed by the steel truss; and ultra-wide transverse rigidity is ensured by adopting a transverse truss design.
The ultra-wide bridge hanging basket structure is characterized in that; four groups of flange lower sliding rails are designed on the main bearing beam, and the two groups of lower sliding rails ensure the safe and synchronous walking of the overweight hanging basket.
The utility model has the following advantages: the utility model discloses a hanging basket design for ultra-wide overweight bridge construction, which is characterized in that: the design solves the problem of bridge hanging basket construction under any width. By the implementation of the utility model: (1) The conventional ultra-wide bridge casting is changed into one-time casting, so that the quality and safety of the bridge are ensured. (2) The safety coefficient of the hanging basket walking high-risk operation is further greatly improved.
Drawings
FIG. 1 is a cross-sectional design of an ultra-wide hanging basket;
FIG. 2 is a side overall design view of the ultra-wide hanging basket;
FIG. 3 is a plan design layout of an ultra-wide hanging basket;
4-5, a main bearing longitudinal beam design drawing of the triangular hanging basket;
FIG. 6-FIG. 8 are designs of a hanging basket skid beam trolley;
FIG. 9 is a cross-sectional view A-A of FIG. 7;
FIG. 10 is a cross-sectional view B-B of FIG. 6;
fig. 11 is a cross-sectional view of fig. 6C-C.
Wherein: the device comprises a main bearing beam 1, an upright post 2, a cradle bottom platform 3, a bearing lower sliding rail 4, a front riding wheel 5, a rear pressing wheel 6, a prestress application part 7, a cable-stayed belt 8, a front upper cross beam 9, a front lower cross beam 10, a rear lower cross beam 11, a front sling 12, a flange lower sliding rail 13 and a lower sliding rail trolley 14.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 11, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides an ultra-wide bridge hanging basket structure by improving the structure, as shown in fig. 1-11, and can be implemented in the following manner; the hanging basket structure is realized by adopting a plurality of groups of main bearing beams 1 and upright posts 2 so as to ensure the bearing requirement of the ultra-wide beam; the hanging basket structure is also provided with a hanging basket bottom platform 3; the main bearing beam 1 and the upright post 2 are connected through a cable-stayed belt 8, a bearing lower sliding rail 4 is designed below the basket bottom platform 3, the transverse span of a bottom rail is reduced, and the weight of an overweight structure during walking is shared.
The utility model is implemented; when walking, the front supporting wheel 5 and the rear pressing wheel 6 are designed in front and behind the main bearing beam 1 to ensure the synchronous safety of the ultra-wide hanging basket walking; the roller sliding friction is used for reducing the resistance to ensure the synchronism.
The utility model is implemented; in order to meet the standard deflection requirement during the construction of the ultra-wide overweight segmental beam, a prestress applying part 7 is designed on the bearing structure at the upper part of the hanging basket.
The utility model is implemented; the hanging basket structure is also provided with a front upper cross beam 9, a front lower cross beam 10 and a rear lower cross beam 11; the ultra-wide hanging basket has high requirement on transverse rigidity, and the upper and lower cross beams of the hanging basket are designed by trusses to ensure the rigidity. The front upper cross beam 9 corresponds to the main bearing beam 1, the front lower cross beam 10 and the rear lower cross beam 11 correspond to the lower part of the basket bottom platform 3, and the front upper cross beam 9 and the front lower cross beam 10 are connected through a front hanging strip 12.
The utility model is implemented; the front, middle and rear parts of the main carrier beam of the hanging basket are respectively provided with transverse connection to ensure the overall rigidity during walking, and walking deviation is strictly controlled during walking.
The utility model is implemented; the hanging basket transverse middle upright post 2 is connected by a steel truss, and the front upper cross beam 9, the front lower cross beam 10 and the rear lower cross beam 11 are all designed by the steel truss; and ultra-wide transverse rigidity is ensured by adopting a transverse truss design.
The utility model is implemented; four groups of flange lower sliding rails 13 and two groups of lower sliding rails 4 are designed on the main bearing beam 1 to ensure the safe and synchronous walking of the overweight hanging basket.
An implementation method of an ultra-wide bridge hanging basket structure; the method is implemented according to the following steps of;
step one, determining the number of main bearing beam groups (main bearing trusses);
(1) Determining the maximum section weight according to bridge design, and preliminarily setting the number of main bearing beam groups;
(2) Reasonably arranging a main bearing beam according to the cross section structure of the main beam design structure;
(3) When the integral rigidity of the hanging basket does not meet the standard requirement and the deviation is not large, the triangular hanging basket is designed, the hanging basket upright post is pre-jacked, the pre-stress is applied to the inclined pull belt, the gap is eliminated, and the hanging basket disturbance degree is reduced;
step two, designing a hanging basket system fence and a lower sliding beam;
designing a bottom fence with enough strength and rigidity according to the structural design section of the main beam, designing a side die according to the design section, and designing an outer side steel truss according to the design inclined web angle and the flange requirements;
step three, designing a hanging system;
the hanging rods and hanging straps are designed according to the maximum section weight and the hanging basket dead weight, and are reasonably arranged according to load distribution, and the hanging rods and hanging straps are designed by fully considering the requirement of reasonable section taking in and out of the girder section height change;
step four, designing the transverse rigidity of the ultra-wide hanging basket;
in order to meet the construction requirement of the ultra-wide girder, the transverse middle upright post of the hanging basket is connected by adopting a steel truss, and the front upper cross beam, the front lower cross beam and the rear lower cross beam are all designed by adopting the steel truss;
step five, designing an ultra-wide hanging basket traveling system;
the biggest difficulty of the ultra-wide hanging basket is that the span of the rear lower beam is overlarge under the action of the overlarge dead weight in the walking process, the requirements on strength, rigidity, stability and safety are very high, the rear lower beam is locked on a poured concrete segment during concrete pouring, and the stress requirement of the rear lower beam under the working condition is not high during pouring; in the traveling process of the hanging basket, the weight of the hanging basket is generally 0.3-0.5 times of the weight of the largest section (the weight of the largest section is about 650 tons) according to the dead weight of the conventional hanging basket, and the span of the lower cross beam is calculated initially to be about 26-42 meters; the lower sliding Liang Jianxiao rear lower cross beam span is designed under the bottom rail to meet the requirements, so that various requirements are met;
the ultra-wide hanging basket walking synchronism is critical to the structure and construction safety, the front end of the hanging basket main bearing beam is designed with the riding wheel, the rear end is designed with the pinch roller, so that friction is reduced, walking is adopted in the walking design, each stroke is checked and adjusted, and the asynchronous gap is controlled within an allowable range;
meanwhile, the whole hanging basket is designed with four groups of flange lower sliding rails and two groups of bottom sliding rails to ensure the safe and synchronous walking of the overweight hanging basket.
The utility model provides an ultra-wide hanging basket structural design, which has the following improvement:
its 1, super wide hanging basket general self structure overweight, transverse span is great, and when hanging basket walking, bottom rail rigidity requirement is high, and this design sets up the bearing slide beam under hanging basket bottom rail to reduce bottom rail transverse span, realize super wide smooth hanging basket walking and safety.
The ultra-wide hanging basket is required to bear large weight, and when the hanging basket is designed, a plurality of groups of bearing structures are designed on the upper part of the hanging basket to ensure bearing requirements, so that strength and rigidity are ensured.
And 3, the ultra-wide hanging basket has high requirement on transverse rigidity, and the upper and lower cross beams of the hanging basket are designed by adopting trusses to ensure the rigidity.
The synchronism is quite important when the ultra-wide hanging basket multi-group main bearing beams walk, the construction safety is seriously affected, front riding wheels and rear pressing wheels are respectively designed at the upper end, the lower end, the front end and the rear end of the main bearing beams, the front riding wheels and the rear pressing wheels are respectively designed at the upper end, the lower end, the front riding wheels and the rear end of the main bearing beams, the sliding friction of the rollers is used for reducing the resistance to ensure the synchronism, the transverse connection is respectively arranged at the front, middle and rear parts of the hanging basket main bearing beams to ensure the integral rigidity during walking, and walking deviation is strictly controlled during walking.
And 5, applying prestress on the design of the bearing structure on the upper part of the hanging basket in order to meet the standard requirement on the deflection of the hanging basket during construction of the ultra-wide overweight segmental beam.
The utility model solves the construction problem of any ultra-wide cantilever section beam. The utility model is realized in the following way: 1. in the aspect of hanging basket bearing, a plurality of groups of main bearing beams (or main bearing trusses) are adopted to ensure the ultra-wide beam bearing requirement; 2. the greatest difficulty in ultra-wide hanging basket walking is that a bearing slide rail beam is designed below the bottom rail of the hanging basket to reduce the transverse span of the bottom rail, so that the weight of an overweight structure is shared when walking; 3. the design of a transverse truss is adopted to ensure ultra-wide transverse rigidity; 4. when walking, a front supporting wheel and a rear pressing wheel are designed in front of and behind the main bearing beam to ensure the synchronous and safe walking of the ultra-wide hanging basket; 5. when the ultra-wide overweight segmental beam is constructed, prestress is applied to the design of the bearing structure at the upper part of the hanging basket in order to meet the requirement of standard deflection.
Implementation examples; in construction of three bridges (middle-center cable-stayed concrete suspension casting girder, girder width is 41 m) in Jialing river in south county of south of the four-river highway bridge construction group limited company, when the hanging basket is designed, a plurality of groups of main bearing girders are adopted to ensure bearing requirements, a bearing slide Liang Baozheng ultra-wide hanging basket is arranged on a bottom rail to normally walk, a transverse truss design is adopted to ensure ultra-wide transverse rigidity, and front riding wheels and rear pressing wheels are designed in front of and behind the main bearing girders to ensure synchronous and safe walking of the ultra-wide hanging basket during walking.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. An ultra-wide bridge hanging basket structure is characterized in that; the hanging basket structure is realized by adopting a plurality of groups of main bearing beams (1) and upright posts (2) so as to ensure the bearing requirement of the ultra-wide beams; the hanging basket structure is also provided with a hanging basket bottom platform (3); the main bearing beam (1) is connected with the upright post (2) through a cable-stayed belt (8), a bearing lower sliding rail (4) is designed under the hanging basket bottom platform (3), the transverse span of the bottom rail is reduced, and the weight of the overweight structure during walking is shared.
2. The ultra-wide bridge hanging basket structure according to claim 1, wherein; front riding wheels (5) and rear pressing wheels (6) are designed in front of and behind the main bearing beam (1) during walking, so that the synchronous safety of the ultra-wide hanging basket walking is ensured; the roller sliding friction is used for reducing the resistance to ensure the synchronism.
3. The ultra-wide bridge hanging basket structure according to claim 1, wherein; in order to meet the standard deflection requirement during the construction of the ultra-wide overweight segmental beam, a prestress applying part (7) is designed on the bearing structure at the upper part of the hanging basket.
4. The ultra-wide bridge hanging basket structure according to claim 1, wherein; the hanging basket structure is also provided with a front upper cross beam (9), a front lower cross beam (10) and a rear lower cross beam (11); the front upper cross beam (9) corresponds to the main bearing beam (1), the front lower cross beam (10) and the rear lower cross beam (11) correspond to the lower part of the basket bottom platform (3), and the front upper cross beam (9) and the front lower cross beam (10) are connected through the front hanging strip (12).
5. The ultra-wide bridge hanging basket structure according to claim 1, wherein; and the front, the middle and the rear of the main carrier beam of the hanging basket are respectively provided with a transverse connection.
6. The ultra-wide bridge hanging basket structure according to claim 1, wherein; the hanging basket transverse middle upright post (2) is connected by adopting a steel truss, and the front upper cross beam (9), the front lower cross beam (10) and the rear lower cross beam (11) are all designed by adopting the steel truss; and ultra-wide transverse rigidity is ensured by adopting a transverse truss design.
7. The ultra-wide bridge hanging basket structure according to claim 1, wherein; four groups of flange lower sliding rails (13) and two groups of lower sliding rails (4) are designed on the main bearing beam (1) to ensure the safe and synchronous walking of the overweight hanging basket.
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| CN202120636698.1U CN219218682U (en) | 2021-03-30 | 2021-03-30 | Ultra-wide bridge hanging basket structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113026571A (en) * | 2021-03-30 | 2021-06-25 | 四川公路桥梁建设集团有限公司 | Ultra-wide bridge hanging basket structure and implementation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026571A (en) * | 2021-03-30 | 2021-06-25 | 四川公路桥梁建设集团有限公司 | Ultra-wide bridge hanging basket structure and implementation method |
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