CN113802467A - Large-gradient beam erecting method based on bridge girder erection machine - Google Patents
Large-gradient beam erecting method based on bridge girder erection machine Download PDFInfo
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- CN113802467A CN113802467A CN202111257612.5A CN202111257612A CN113802467A CN 113802467 A CN113802467 A CN 113802467A CN 202111257612 A CN202111257612 A CN 202111257612A CN 113802467 A CN113802467 A CN 113802467A
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- girder erection
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention provides a large-gradient beam erecting method based on a bridge erecting machine, which comprises the following steps of: s1, bridging machine via holes; s2, the front girder transporting vehicle and the rear girder transporting vehicle transport the girder pieces to the feeding beam in the bridge girder erection machine, and the front overhead crane vertically hoists the front ends of the girder pieces to separate the front ends of the girder pieces from the front girder transporting vehicle; s3, the front overhead traveling crane and the rear beam transporting vehicle are matched with each other to move the beam piece forwards, so that the lifting point at the rear end of the beam piece is moved to the position corresponding to the rear overhead traveling crane, and the rear overhead traveling crane lifts the rear end of the beam piece, so that the rear end of the beam piece is separated from the rear beam transporting vehicle; s4, the front crown block and the rear crown block synchronously move forwards longitudinally to convey the beam piece to a position between two cover beams to be installed, and the beam piece reaches a longitudinally designated position and locks the longitudinal position of the beam piece; s5, moving the beam piece to a transverse designated position by the bridge girder erection machine through integral transverse moving; and S6, lowering the beam piece to a position 50cm away from the corresponding cover beam, adjusting the longitudinal position and the transverse position of the beam piece, and finally, dropping the beam in place. The invention can erect the large-gradient beam piece, and ensure the beam erecting safety and the beam erecting quality.
Description
Technical Field
The invention relates to the technical field of bridge erecting methods for highway and railway bridges, in particular to a large-gradient bridge erecting method based on a bridge erecting machine.
Background
The bridge girder erection machine is equipment for placing prefabricated beam pieces on a prefabricated bridge pier. The bridge erecting machine is a kind of crane and its main function is to lift the beam and to run on the bridge surface beam (or to move longitudinally) to transport the beam to a certain position and then to put it down.
Along with the popularization and use of the bridge girder erection machine, the bridge girder erection machine provides convenience for large-scale engineering construction, shortens the engineering period to a certain extent, however, the existing bridge girder erection machine is basically only suitable for horizontal girder erection, and cannot smoothly realize the girder erection procedure under the condition of large gradient of a girder erection piece.
Therefore, how to design a beam erecting method capable of adapting to the erection of the large-gradient beam pieces becomes a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a large-gradient beam erecting method based on a bridge erecting machine, which can erect large-gradient beam pieces and ensure the beam erecting safety and the beam erecting quality.
In order to achieve the aim, the invention provides a large-gradient girder erection method based on a bridge girder erection machine, which comprises the following steps of:
s1, bridging machine via holes;
s2, the front girder transporting vehicle and the rear girder transporting vehicle transport the girder pieces to the feeding beam in the bridge girder erection machine, and the front overhead crane vertically hoists the front ends of the girder pieces to separate the front ends of the girder pieces from the front girder transporting vehicle;
s3, the front overhead traveling crane and the rear beam transporting vehicle are matched with each other to move the beam piece forwards, so that the lifting point at the rear end of the beam piece is moved to the position corresponding to the rear overhead traveling crane, and the rear overhead traveling crane lifts the rear end of the beam piece, so that the rear end of the beam piece is separated from the rear beam transporting vehicle;
s4, the front crown block and the rear crown block synchronously move forwards longitudinally to convey the beam piece to a position between two cover beams to be installed, and the beam piece reaches a longitudinally designated position and locks the longitudinal position of the beam piece;
s5, moving the beam piece to a transverse designated position by the bridge girder erection machine through integral transverse moving;
and S6, lowering the beam piece to a position 50cm away from the corresponding cover beam, adjusting the longitudinal position and the transverse position of the beam piece, and finally, dropping the beam in place.
Further, the gradient of the bridge to be bridged is 6% -40%.
Further, step S1 includes:
s11, adding a front auxiliary supporting leg in front of the front supporting leg of the bridge girder erection machine, and adding a middle auxiliary supporting leg behind the middle supporting leg of the bridge girder erection machine;
s12, supporting the front end of the main beam by the front supporting leg, supporting the rear end of the main beam by the rear reverse support and the rear jacking, moving the middle supporting leg and the middle auxiliary supporting leg forward to the front end of the main beam, and lifting the middle supporting leg to enable the front supporting leg 5d to be free from stress;
s13, moving the main beam forwards for 10m integrally;
s14, matching a middle supporting leg at the front end of the bridge girder erection machine with a middle auxiliary supporting leg, matching a rear reverse support with a rear jacking height, and drawing out one section of the middle supporting leg to reduce the height of the main girder to finish the integral descending of the bridge girder erection machine by 60 cm;
s15, repeating the step S13 and the step S14, moving the whole bridge girder erection machine forward for multiple times, moving forward for 10m each time, and descending for 60cm until the distance between the front end of the main girder of the bridge girder erection machine and the next cover girder is 10 m;
s16, transporting the beam piece to the back of the back reverse support by the beam transporting vehicle, connecting the back crown block with the beam piece on the beam transporting vehicle, and keeping the steel wire rope of the back crown block in a tight and unstressed state;
s17, moving the main beam of the bridge girder erection machine forward by 10m, moving the front overhead traveling crane and the rear overhead traveling crane backward in the process, keeping the relative positions unchanged, and supporting the front auxiliary supporting leg on the front cover beam;
s18, under the supporting premise of the auxiliary supporting legs, the front supporting legs move forwards to a front cover beam and are supported, the front supporting legs and the middle supporting legs are locked with a main beam of the bridge girder erection machine, the connection between a rear crown block and a beam piece is removed, the front supporting legs are matched with the middle supporting legs and are lifted backwards, the whole bridge girder erection machine descends by 60cm, the through holes are formed, and the bridge girder erection condition is met.
The invention has the following beneficial effects:
the large-gradient girder erection method based on the bridge girder erection machine can realize large-gradient hole passing of the bridge girder erection machine, so that erection of large-gradient girder pieces is realized, construction safety of the large-gradient girder pieces is guaranteed, and construction progress and construction quality of the large-gradient girder pieces are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of a structure in which a beam piece is erected on a bent cap;
fig. 2 is a schematic view of the girder erection at step S2;
fig. 3 is a schematic view of the girder erection at step S3;
fig. 4 is a schematic view of the girder erection at step S4;
FIG. 5 is a schematic structural diagram of a conventional bridge girder erection machine;
FIG. 6 is a schematic diagram of a via hole of the bridge erecting machine in step S11;
FIG. 7 is a schematic view of a via hole of the bridge erecting machine in step S12;
FIG. 8 is a schematic diagram of a via hole of the bridge erecting machine in step S13 and step S14;
FIG. 9 is a schematic view of a via hole of the bridge girder erection machine in step S15;
FIG. 10 is a schematic view of a via hole of the bridge erecting machine in step S16;
FIG. 11 is a schematic diagram of a via hole of the bridge erecting machine in step S17 and step S18;
reference numerals
1-beam piece; 2-a capping beam; 3-front beam transporting vehicle; 4-rear beam transporting vehicle; 5, a main beam; 5 a-front crown block; 5 b-rear crown block; 5 c-main beam; 5 d-front leg; 5 e-middle leg; 5 f-rear reverse support; 5 g-back ceiling height; 5 h-front auxiliary supporting legs; 5 i-middle auxiliary leg.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the following further detailed description of the embodiments of the present application with reference to the drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Fig. 1 is a schematic structural diagram of a T-shaped beam piece 1 mounted on a cover beam 2. Four T-shaped beam pieces are transversely erected on one bent cap 2.
As shown in fig. 2, the girder erection method for erecting the girder segment 1 has a gradient of 15% according to design requirements, and the girder erection method for the girder segment 1 specifically comprises the following steps:
s1, bridging machine via holes;
s2, the front girder transporting vehicle 3 and the rear girder transporting vehicle 4 transport the girder pieces to the inner girder feeding of the bridge girder erection machine 5, and the front overhead crane 5a vertically lifts the front ends of the girder pieces 1 to separate the front ends of the girder pieces 1 from the front girder transporting vehicle 3, as shown in FIG. 2;
s3, the front overhead crane 5a and the rear beam carrier 4 are matched with each other to move the beam piece 1 forward, so that the lifting point at the rear end of the beam piece 1 moves to the position corresponding to the rear overhead crane 5b, and the rear overhead crane 5b lifts the rear end of the beam piece 1, so that the rear end of the beam piece is also separated from the rear beam carrier, as shown in FIG. 3;
s4, synchronously moving the front overhead traveling crane 5a and the rear overhead traveling crane 5b longitudinally forward to convey the beam piece 1 between two cover beams to be installed, and locking the longitudinal position of the beam piece when the beam piece reaches the longitudinally specified position, as shown in FIG. 4;
s5, moving the beam piece to a transverse designated position by the bridge girder erection machine through integral transverse moving;
s6, lowering the beam pieces to a position which is 50cm away from the corresponding bent cap, adjusting the longitudinal position and the transverse position of the beam pieces, and finally dropping the beam in place, wherein the beam pieces are sequentially arranged from left to right (the fourth step, the third step, the fourth step and the fourth step) as shown in the figure 1.
Because the erected beam piece 1 has a large gradient, the conventional horizontal hole passing mode of the bridge girder erection machine cannot complete the hole passing process of the bridge girder erection machine with the large gradient. Based on the structure, the application designs a novel structure of a bridge girder erection machine and a hole passing method thereof. Specifically, as shown in fig. 5, which is a schematic structural diagram of a conventional bridge girder erection machine, the bridge girder erection machine 5 includes a main girder 5c, a front overhead crane 5a and a rear overhead crane 5b for hoisting a girder piece, a front leg 5d for supporting the main girder, a middle leg 5e, a rear back support 5f, and a rear ceiling height 5 g. The bridge erecting machine provided by the application is additionally provided with a front auxiliary supporting leg 5h in front of a front supporting leg 5d and a middle auxiliary supporting leg 5i behind a middle supporting leg 5e, as shown in fig. 6.
The steep-slope girder erection method is performed as follows, that is, the step S1 specifically includes the following steps:
s11, adding a front auxiliary supporting leg 5h in front of the front supporting leg 5d of the bridge girder erection machine, and adding a middle auxiliary supporting leg 5i behind the middle supporting leg 5e of the bridge girder erection machine, as shown in FIG. 6;
s12, the front support leg 5d supports the front end of the main beam, the rear reverse support 5f and the rear jacking height 5g support the rear end of the main beam, the middle support leg 5e and the middle auxiliary support leg 5i are moved forward to the front end of the main beam 5c, and the middle support leg 5e is lifted to enable the front support leg 5d to be free from stress, as shown in FIG. 7;
s13, moving the whole main beam forward by 10m, as shown in FIG. 8;
s14, matching a middle supporting leg 5e at the front end of the bridge girder erection machine with a middle auxiliary supporting leg 5i, matching a rear reverse support 5f with a rear jacking height 5g, and drawing out one section of the middle supporting leg 5e to reduce the height of the main girder to finish the integral descending of the bridge girder erection machine by 60cm, as shown in FIG. 8;
s15, repeating the step S13 and the step S14, moving the whole bridge girder erection machine forward for multiple times, moving forward for 10m each time, and descending for 60cm until the distance between the front end of the main girder of the bridge girder erection machine and the next cover girder 2 is 10m, as shown in FIG. 9;
s16, carrying the beam piece 1 to the back of the beam carrying vehicle, connecting the back crown block 5b with the beam piece 1 on the beam carrying vehicle, wherein the steel wire rope of the back crown block 5b is in a tight and unstressed state, as shown in figure 10;
s17, moving the main beam of the bridge girder erection machine forward by 10m, moving the front overhead traveling crane 5a and the rear overhead traveling crane 5b backward in the process, keeping the relative positions unchanged, and supporting the front auxiliary supporting leg 5h on the front cover beam 2, as shown in FIG. 11;
s18, under the supporting premise of the auxiliary supporting legs 5h, the front supporting leg 5d moves forwards to the front cover beam 2 and is supported, the front supporting leg 5d and the middle supporting leg 5e are locked with the main beam 5c of the bridge girder erection machine, the connection between the rear crown block 5b and the beam piece 1 is removed, the front supporting leg 5d is matched with the middle supporting leg 5e and the rear jacking height 5g, the whole bridge girder erection machine descends by 60cm, the through hole is completed, and the bridge girder erection condition is achieved, as shown in fig. 11.
According to the technical scheme, the large-gradient girder erection method based on the bridge girder erection machine can realize large-gradient hole passing of the bridge girder erection machine, so that the erection of large-gradient girder pieces is realized, the construction safety of the large-gradient girder pieces is ensured, and the girder erection progress and the girder erection quality of the large-gradient girder are improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (3)
1. A large-gradient beam erecting method based on a bridge girder erection machine is characterized by comprising the following steps:
s1, bridging machine via holes;
s2, the front girder transporting vehicle and the rear girder transporting vehicle transport the girder pieces to the feeding beam in the bridge girder erection machine, and the front overhead crane vertically hoists the front ends of the girder pieces to separate the front ends of the girder pieces from the front girder transporting vehicle;
s3, the front overhead traveling crane and the rear beam transporting vehicle are matched with each other to move the beam piece forwards, so that the lifting point at the rear end of the beam piece is moved to the position corresponding to the rear overhead traveling crane, and the rear overhead traveling crane lifts the rear end of the beam piece, so that the rear end of the beam piece is separated from the rear beam transporting vehicle;
s4, the front crown block and the rear crown block synchronously move forwards longitudinally to convey the beam piece to a position between two cover beams to be installed, and the beam piece reaches a longitudinally designated position and locks the longitudinal position of the beam piece;
s5, moving the beam piece to a transverse designated position by the bridge girder erection machine through integral transverse moving;
and S6, lowering the beam piece to a position 50cm away from the corresponding cover beam, adjusting the longitudinal position and the transverse position of the beam piece, and finally, dropping the beam in place.
2. A large-gradient beam erecting method based on a bridge erecting machine according to claim 1, wherein the gradient of the bridge to be erected is 6% -40%.
3. The large-gradient beam erecting method based on bridge girder erection machine according to claim 2, wherein the step S1 comprises:
s11, adding a front auxiliary supporting leg in front of the front supporting leg of the bridge girder erection machine, and adding a middle auxiliary supporting leg behind the middle supporting leg of the bridge girder erection machine;
s12, supporting the front end of the main beam by the front supporting leg, supporting the rear end of the main beam by the rear reverse support and the rear jacking, moving the middle supporting leg and the middle auxiliary supporting leg forward to the front end of the main beam, and lifting the middle supporting leg to enable the front supporting leg 5d to be free from stress;
s13, moving the main beam forwards for 10m integrally;
s14, matching a middle supporting leg at the front end of the bridge girder erection machine with a middle auxiliary supporting leg, matching a rear reverse support with a rear jacking height, and drawing out one section of the middle supporting leg to reduce the height of the main girder to finish the integral descending of the bridge girder erection machine by 60 cm;
s15, repeating the step S13 and the step S14, moving the whole bridge girder erection machine forward for multiple times, moving forward for 10m each time, and descending for 60cm until the distance between the front end of the main girder of the bridge girder erection machine and the next cover girder is 10 m;
s16, transporting the beam piece to the back of the back reverse support by the beam transporting vehicle, connecting the back crown block with the beam piece on the beam transporting vehicle, and keeping the steel wire rope of the back crown block in a tight and unstressed state;
s17, moving the main beam of the bridge girder erection machine forward by 10m, moving the front overhead traveling crane and the rear overhead traveling crane backward in the process, keeping the relative positions unchanged, and supporting the front auxiliary supporting leg on the front cover beam;
s18, under the supporting premise of the auxiliary supporting legs, the front supporting legs move forwards to a front cover beam and are supported, the front supporting legs and the middle supporting legs are locked with a main beam of the bridge girder erection machine, the connection between a rear crown block and a beam piece is removed, the front supporting legs are matched with the middle supporting legs and are lifted backwards, the whole bridge girder erection machine descends by 60cm, the through holes are formed, and the bridge girder erection condition is met.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387238A (en) * | 2022-09-19 | 2022-11-25 | 中铁大桥局集团有限公司 | Bridge girder erection method of bridge girder erection machine suitable for space cross road section |
| CN115387238B (en) * | 2022-09-19 | 2024-07-09 | 中铁大桥局集团有限公司 | Bridge girder erection method suitable for space crossing section |
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| CN106149570A (en) * | 2015-03-24 | 2016-11-23 | 济南城建集团有限公司 | A kind of walking bridging machine erecting box girder construction method |
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| CN110130229A (en) * | 2019-06-24 | 2019-08-16 | 中交一公局第六工程有限公司 | It a kind of several juxtaposed double cantilever erections machines and its sets a roof beam in place and passing method |
| CN111608089A (en) * | 2020-06-09 | 2020-09-01 | 中铁北京工程局集团北京有限公司 | Large longitudinal slope integral bridge girder erection machine over-span construction method and construction system |
| CN112144401A (en) * | 2020-06-28 | 2020-12-29 | 中交第二航务工程局有限公司 | Bridge girder erection machine over-span method based on curve track and large longitudinal slope environment |
| CN212270709U (en) * | 2020-06-09 | 2021-01-01 | 中铁北京工程局集团北京有限公司 | Large longitudinal slope integral bridge girder erection machine over-span construction system |
| CN212294350U (en) * | 2019-09-04 | 2021-01-05 | 中铁九桥工程有限公司 | Special bridge girder erection machine for large-span large-gradient curve highway steel-concrete composite beam |
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2021
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| JPH0841828A (en) * | 1994-08-01 | 1996-02-13 | P S Co Ltd | Bridge girder erection equipment |
| CN202969281U (en) * | 2012-12-21 | 2013-06-05 | 中铁十一局集团有限公司 | Dual-purpose bridge girder erection machine central leg capable of transversely shifting box girder of 450 tons or 900 tons |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115387238A (en) * | 2022-09-19 | 2022-11-25 | 中铁大桥局集团有限公司 | Bridge girder erection method of bridge girder erection machine suitable for space cross road section |
| CN115387238B (en) * | 2022-09-19 | 2024-07-09 | 中铁大桥局集团有限公司 | Bridge girder erection method suitable for space crossing section |
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| CN113802467B (en) | 2023-05-09 |
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