CN106149570A - A kind of walking bridging machine erecting box girder construction method - Google Patents
A kind of walking bridging machine erecting box girder construction method Download PDFInfo
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- CN106149570A CN106149570A CN201510129471.7A CN201510129471A CN106149570A CN 106149570 A CN106149570 A CN 106149570A CN 201510129471 A CN201510129471 A CN 201510129471A CN 106149570 A CN106149570 A CN 106149570A
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- box beam
- support roller
- overhead traveling
- bridge
- traveling crane
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Abstract
The present invention relates to field of bridge construction, particularly to a kind of walking bridging machine erecting box girder construction method.It is included in Bridge Erector rear end and lifts by crane the prefabricated case beam shipped by beam car, the modulation forward and backward supporting leg of Bridge Erector and in, the component such as rear support roller, Bridge Erector reach is promoted while keeping Bridge Erector own wt balance, front outrigger for bridge girder erection machine vertical shift to front is treated on frame bridge pier capping beam, rear support leg Zhi Yuyi frame box beam front end end face, thus reach the purpose of via, then utilize the fortune beam overhead traveling crane on Bridge Erector to carry out the lifting of box beam.The defects such as the present invention solves crane and need to repeatedly install, move, and efficiency of construction is low, and risk factor is high.The present invention both can guarantee that the duration, also ensure that normal construction and the vehicle pass-through of road under bridge, reduce construction cost simultaneously, safety coefficient is high, there is good Social benefit and economic benefit, preferably applying in the prefabricated box girder hoisting engineering of city, be particularly suitable for on-water bridge, higher bridge prefabrication box beam lifts.
Description
(1)
Technical field
The present invention relates to field of bridge construction, particularly to a kind of walking bridging machine erecting box girder construction method.
(2)
Background technology
Prefabricated box girder hoisting, as the major project of bridge, is the emphasis of whole field of bridge construction, difficult point, there is also numerous technical barriers simultaneously.Current prefabricated box girder hoisting construction technology, uses crane hanging component need to repeatedly install, move, and efficiency of construction is low, risk factor is high, and needs to take certain safeguard procedures, and once construction environment changes, execution conditions are complicated, and the construction period is longer, and construction cost improves.
(3)
Summary of the invention
The present invention is in order to make up the defect of prior art, it is provided that a kind of safe and efficient walking bridging machine erecting box girder construction method.
The present invention is achieved through the following technical solutions:
A kind of walking bridging machine erecting box girder construction method, is characterized in that: comprise the following steps:
1) first across box beam erection:
First by flat car for transport of sills feeding beam, starting flat car for transport of sills and box beam be transported at middle support roller, before making box beam, suspension centre is placed in below front overhead traveling crane, and is sling box beam front end；Simultaneously drive front overhead traveling crane and flat car for transport of sills trailing wheel, advanced in unison, make the rear suspension centre of box beam be positioned in below the rear overhead traveling crane waited at support roller；Then overhead traveling crane lifting after, two overhead traveling cranes advance with box beam, until box beam reaches above two bridge piers；Box beam is fallen from bent cap 5～15 centimetres；Bridge Erector is traversing, and the roller box of front leg strut and middle torr synchronizes to move along respective cross moving track, arrives Liang Weishi and falls beam, falls on bearing, complete the installation of a piece of box beam.
2) via:
A: support roller and front leg strut after jacking, move to lift box beam end by middle support roller and middle support roller cross moving track reach 30 meters with lifting overhead traveling crane, moved forward 10 meters by rear support roller；
B: with flat car for transport of sills, box beam being transported to middle support roller position to the rear, and retreat two lifting overhead traveling cranes to middle support roller rears, sling box beam front end with rear overhead traveling crane, front overhead traveling crane couples with middle support roller；
C: pack up front leg strut, rear support leg, in startup, support roller group promotes girder frame to move forward 16 meters, and box beam is motionless；Putting down rear support leg, moved forward 18 meters by rear support roller with front overhead traveling crane, box beam follows up to rear support roller position to the rear with rear overhead traveling crane simultaneously；
D: support roller after jacking, packs up rear support leg, and in startup, support roller group promotes girder frame to move forward 14 meters, and box beam is motionless；Front overhead traveling crane and rear support roller are released and couples, and lift by crane front leg strut track and move forward at previous bent cap, after laying leveling, front leg strut is inserted on track；
E: being released with box beam by rear overhead traveling crane and couple, two overhead traveling cranes move to middle support roller place to the rear, start flat car for transport of sills and box beam are transported at middle support roller, start next and lift across box beam.
3) beam body is traversing to on-station position: under the traversing wheels of front leg strut and middle torr traversing wheels simultaneously, in the same direction, synchronized action, drive Bridge Erector related beam sheet transverse shifting.
4) fall beam: box beam is fallen on the bearing of bridge pier.
5) Bridge Erector returns: first trolley is traversing: tear suspender open, packs up steel wire rope, and two trolleys are laterally moved in the middle of crownblock beam；Secondly Bridge Erector is traversing: traversing Bridge Erector is to feeding beam position；It is finally that overhead traveling crane returns to rear support leg position, carries out the preparation of a piece of box beam under lifting.
The invention has the beneficial effects as follows:
The defects such as 1, the present invention solves crane and need to repeatedly install, move, and efficiency of construction is low, and risk factor is high.
2, the present invention both can guarantee that the duration, also ensure that normal construction and the vehicle pass-through of road under bridge, reduces construction cost simultaneously.
3, the present invention does not haves crane at the construction field (site), would not damage pedestrian around and vehicle yet, therefore have good Social benefit and economic benefit,
Promotional value is had in Urban Bridge Construction.
4, the construction method of the present invention is preferably applied in the prefabricated box girder hoisting engineering of city, is particularly suitable for on-water bridge, and higher bridge prefabrication box beam lifts.
(4)
Detailed description of the invention
Before using this kind of walking bridging machine erecting box girder construction method to construct, first carry out preparation of construction: all beam sheets by supervising engineer and project quality inspection engineer inspection qualified after can carry out transporting, installing, require before installing to check the overall dimensions of beam body, concrete strength, embedded bar (part) size and position, lifting hole location, spilled water hole position, stretch-draw and squeezing quality, concrete presentation quality, end-blocking quality etc., can install after meeting the requirements.The each spot size of close inspection beam body, presentation quality, concrete strength, stretch-draw and squeezing quality, check embedded bar (part) position, quantity, close inspection needs the treatment of construction joints situation of rear pouring concrete connecting portion, it is necessary to loose concrete granule, laitance are all cut, and is advisable exposing fresh concrete face.
Quality Inspector is responsible for collecting Bridge Erector and personnel's data of marching into the arena reports supervision & assessment, including the machinery quality certification, Qiao Ji manufacturer qualification and personnel identity information, special operation workers operation card.And work of applying for checking and examination after carrying out the assembly of bridge machine, debugging.
Follow the steps below again after completing the assembly of Bridge Erector acceptance(check):
1) first across box beam erection:
First by flat car for transport of sills feeding beam, starting flat car for transport of sills and box beam be transported at middle support roller, before making box beam, suspension centre is placed in below front overhead traveling crane, and is sling box beam front end；Simultaneously drive front overhead traveling crane and flat car for transport of sills trailing wheel, advanced in unison, make the rear suspension centre of box beam be positioned in below the rear overhead traveling crane waited at support roller；Then overhead traveling crane lifting after, two overhead traveling cranes advance with box beam, until box beam reaches above two bridge piers；Box beam is fallen from bent cap 5～15 centimetres；Bridge Erector is traversing, and the roller box of front leg strut and middle torr synchronizes to move along respective cross moving track, arrives Liang Weishi and falls beam, falls on bearing, complete the installation of a piece of box beam.
2) via:
A: support roller and front leg strut after jacking, move to lift box beam end by middle support roller and middle support roller cross moving track reach 30 meters with lifting overhead traveling crane, moved forward 10 meters by rear support roller；
B: with flat car for transport of sills, box beam being transported to middle support roller position to the rear, and retreat two lifting overhead traveling cranes to middle support roller rears, sling box beam front end with rear overhead traveling crane, front overhead traveling crane couples with middle support roller；
C: pack up front leg strut, rear support leg, in startup, support roller group promotes girder frame to move forward 16 meters, and box beam is motionless；Putting down rear support leg, moved forward 18 meters by rear support roller with front overhead traveling crane, box beam follows up to rear support roller position to the rear with rear overhead traveling crane simultaneously；
D: support roller after jacking, packs up rear support leg, and in startup, support roller group promotes girder frame to move forward 14 meters, and box beam is motionless；Front overhead traveling crane and rear support roller are released and couples, and lift by crane front leg strut track and move forward at previous bent cap, after laying leveling, front leg strut is inserted on track；
E: being released with box beam by rear overhead traveling crane and couple, two overhead traveling cranes move to middle support roller place to the rear, start flat car for transport of sills and box beam are transported at middle support roller, start next and lift across box beam.
3) beam body is traversing to on-station position: under the traversing wheels of front leg strut and middle torr traversing wheels simultaneously, in the same direction, synchronized action, drive Bridge Erector related beam sheet transverse shifting.
4) fall beam: box beam is fallen on the bearing of bridge pier.Intensity during concrete form removal must not be less than the 75% of design strength.In order to ensure solid colour, should dry in the shade half a day after form removal, be then covered by felt watering health preserving.Box beam concrete is checked comprehensively, pinpoints the problems and analyze reason in time, correct in time.
5) Bridge Erector returns: first trolley is traversing: tear suspender open, packs up steel wire rope, and two trolleys are laterally moved in the middle of crownblock beam；Secondly Bridge Erector is traversing: traversing Bridge Erector is to feeding beam position；It is finally that overhead traveling crane returns to rear support leg position, carries out the preparation of a piece of box beam under lifting.
After having lifted, inspect for acceptance: check box beam according to bearing centrage ruler the most accurate to position along bridge, should control within 10mm along bridge longitudinal axis, deviation with total station survey.Underproof firmly do over again, again lift by crane installation, until compliant requirement.Ensure that bridge linear is attractive in appearance.
Quality standard: according to relevant specification, drawing requirement, quality standard is as follows:
Front leg strut, the track that laterally runs of middle support roller require strictly to control spacing, and two tracks must be parallel, and Bridge Erector gauge error is less than 2mm, and the adjacent orbit joint discrepancy in elevation is not more than 1mm.
Along bridge longitudinal axis, deviation should control within 10mm.
In addition to technical characteristic described in description, remaining technical characteristic is all known to a person skilled in the art technology.
Claims (1)
1. a walking bridging machine erecting box girder construction method, is characterized in that: comprise the following steps:
1) first across box beam erection:
First by flat car for transport of sills feeding beam, starting flat car for transport of sills and box beam be transported at middle support roller, before making box beam, suspension centre is placed in below front overhead traveling crane, and is sling box beam front end；Simultaneously drive front overhead traveling crane and flat car for transport of sills trailing wheel, advanced in unison, make the rear suspension centre of box beam be positioned in below the rear overhead traveling crane waited at support roller；Then overhead traveling crane lifting after, two overhead traveling cranes advance with box beam, until box beam reaches above two bridge piers；Box beam is fallen from bent cap 5～15 centimetres；Bridge Erector is traversing, and the roller box of front leg strut and middle torr synchronizes to move along respective cross moving track, arrives Liang Weishi and falls beam, falls on bearing, complete the installation of a piece of box beam；
2) via:
A: support roller and front leg strut after jacking, move to lift box beam end by middle support roller and middle support roller cross moving track reach 30 meters with lifting overhead traveling crane, moved forward 10 meters by rear support roller；
B: with flat car for transport of sills, box beam being transported to middle support roller position to the rear, and retreat two lifting overhead traveling cranes to middle support roller rears, sling box beam front end with rear overhead traveling crane, front overhead traveling crane couples with middle support roller；
C: pack up front leg strut, rear support leg, in startup, support roller group promotes girder frame to move forward 16 meters, and box beam is motionless；Putting down rear support leg, moved forward 18 meters by rear support roller with front overhead traveling crane, box beam follows up to rear support roller position to the rear with rear overhead traveling crane simultaneously；
D: support roller after jacking, packs up rear support leg, and in startup, support roller group promotes girder frame to move forward 14 meters, and box beam is motionless；Front overhead traveling crane and rear support roller are released and couples, and lift by crane front leg strut track and move forward at previous bent cap, after laying leveling, front leg strut is inserted on track；
E: being released with box beam by rear overhead traveling crane and couple, two overhead traveling cranes move to middle support roller place to the rear, start flat car for transport of sills and box beam are transported at middle support roller, start next and lift across box beam；
3) beam body is traversing to on-station position: under the traversing wheels of front leg strut and middle torr traversing wheels simultaneously, in the same direction, synchronized action, drive Bridge Erector related beam sheet transverse shifting；
4) fall beam: box beam is fallen on the bearing of bridge pier；
5) Bridge Erector returns: trolley is traversing: tear suspender open, packs up steel wire rope, and two trolleys are laterally moved in the middle of crownblock beam；
6) Bridge Erector is traversing: traversing Bridge Erector is to feeding beam position；
7) overhead traveling crane returns: overhead traveling crane returns to rear support leg position, carries out the preparation of a piece of box beam under lifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129471.7A CN106149570A (en) | 2015-03-24 | 2015-03-24 | A kind of walking bridging machine erecting box girder construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129471.7A CN106149570A (en) | 2015-03-24 | 2015-03-24 | A kind of walking bridging machine erecting box girder construction method |
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| CN106149570A true CN106149570A (en) | 2016-11-23 |
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| CN201510129471.7A Pending CN106149570A (en) | 2015-03-24 | 2015-03-24 | A kind of walking bridging machine erecting box girder construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653104A (en) * | 2018-12-26 | 2019-04-19 | 中国水利水电第四工程局有限公司 | A kind of across the erection construction method of double line box girder change |
| CN112575694A (en) * | 2020-12-10 | 2021-03-30 | 江苏捷达交通工程集团有限公司 | Mounting construction method for long-span T beam |
| CN112663514A (en) * | 2020-12-21 | 2021-04-16 | 中建八局第三建设有限公司 | Novel pier-beam integrated bridge girder erection machine |
| CN113202028A (en) * | 2021-04-08 | 2021-08-03 | 中铁六局集团有限公司 | Construction method for erecting large-span box girder by railway bridge girder erection machine on upper-span business line |
| CN113802467A (en) * | 2021-10-27 | 2021-12-17 | 重庆城建控股(集团)有限责任公司 | Large-gradient beam erecting method based on bridge girder erection machine |
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| CN1609342A (en) * | 2004-11-25 | 2005-04-27 | 中铁大桥局集团有限公司 | Down beam type bridge-erecting machine and bridge erecting method thereof |
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2015
- 2015-03-24 CN CN201510129471.7A patent/CN106149570A/en active Pending
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| CN1609342A (en) * | 2004-11-25 | 2005-04-27 | 中铁大桥局集团有限公司 | Down beam type bridge-erecting machine and bridge erecting method thereof |
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| CN102797226A (en) * | 2012-07-26 | 2012-11-28 | 中铁六局集团有限公司 | Integral erection construction method of 60m steel box girder |
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Non-Patent Citations (1)
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| 杨小强: "杨小强", 《中国新技术新产品》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653104A (en) * | 2018-12-26 | 2019-04-19 | 中国水利水电第四工程局有限公司 | A kind of across the erection construction method of double line box girder change |
| CN112575694A (en) * | 2020-12-10 | 2021-03-30 | 江苏捷达交通工程集团有限公司 | Mounting construction method for long-span T beam |
| CN112663514A (en) * | 2020-12-21 | 2021-04-16 | 中建八局第三建设有限公司 | Novel pier-beam integrated bridge girder erection machine |
| CN113202028A (en) * | 2021-04-08 | 2021-08-03 | 中铁六局集团有限公司 | Construction method for erecting large-span box girder by railway bridge girder erection machine on upper-span business line |
| CN113802467A (en) * | 2021-10-27 | 2021-12-17 | 重庆城建控股(集团)有限责任公司 | Large-gradient beam erecting method based on bridge girder erection machine |
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Application publication date: 20161123 |