CN104631333A - Moving hanger frame and method for small cross beam, small longitudinal beam and bridge deck slab cast-in-situ construction of arch bridge - Google Patents
Moving hanger frame and method for small cross beam, small longitudinal beam and bridge deck slab cast-in-situ construction of arch bridge Download PDFInfo
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- CN104631333A CN104631333A CN201510047430.3A CN201510047430A CN104631333A CN 104631333 A CN104631333 A CN 104631333A CN 201510047430 A CN201510047430 A CN 201510047430A CN 104631333 A CN104631333 A CN 104631333A
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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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
- E01D4/00—Arch-type bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a moving hanger frame and method for small cross beam, small longitudinal beam and bridge deck slab cast-in-situ construction of an arch bridge. The moving hanger frame comprises slide ways formed in cast side main beams installed on two sides and a simple supporting hanger frame stretching across the cast side main beams installed on the two sides, wherein two ends of the simple supporting hanger frame are installed on the slide ways, a plurality of upper distribution beams are distributed at the top of the simple supporting hanger, hanging rods are connected to the upper distribution beams, the bottoms of the hanging rods are connected with lower distribution beams under the simple supporting hanger frame, cross beams are laid at the top of the lower distribution beams, and a formwork system for casting small cross beams, small longitudinal beams and bridge deck slabs is arranged on the cross beams. The moving hanger frame consumes few auxiliary materials. During construction, the simple supporting hanger frame can forwards slide along the slide ways, can be moved to a next spanning position after completing one spanning and is convenient to use; the moving hanger frame is free of a ground support, the whole construction process is completed on a movable constriction platform, safety risk is lower, and the moving hanger frame does not need a large hoisting device for matched constriction after installation is completed and is not limited by a geographical environment.
Description
Technical field
The present invention is used for technical field of bridge construction, particularly relates to a kind of arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge and method.
Background technology
Along with development, the growth in the living standard of China's economic strength, arch bridge is applied in town road more and more as a kind of bridge type attractive in appearance.For half-through steel box tied arch bridge, " Y type " triangle frame structure and upper steel case is often had to encircle above main pier even in aggregates.This structure construction order is generally: 2 " Y type " triangle frame concrete on main pier bearing platform of first constructing, then 2 edge-beams above constructing, " Y type " structure is made to become triangular structure, the large-scale transverse beam (before, during and after point) of constructing again between two triangular structures, finally construction 2 edge-beams and 3 large-scale transverse beams surround needle beam, stringer and the bridge deck in the middle of profile, form complete spanning load-carrying members.Be positioned at edge-beam and three large-scale before, during and after monolithic reinforced concrete structure between crossbeam be called needle beam, stringer and bridge deck.For needle beam, stringer and bridge deck cast-in-place construction in half-through steel box tied arch bridge triangle frame structure, according to design feature and on-site actual situations, the construction method of economical rationality can be selected.
Under normal circumstances, needle beam, stringer and bridge deck cast-in-place construction conventional method are: beam-column holder method is cast-in-place, raft support method is cast-in-place.
1. beam-column holder method: inserted to play steel pipe pile or prefabricated tubular pile basis below cast-in-place concrete structure, to construct little cushion cap, steel pipe post and connection structure are installed, pile cover and capital distribution beam, arrange that Bailey beam and bracing frame are formed as leap beam type braced structures and build support, Bailey beam end face arranges little distribution beam and steel pipe scaffold, its end face is adjusted to various pouring structure shape as required, last formwork erection, assembling reinforcement concreting, is beam-column holder method cast-in-place.
2. raft support method: the ground below cast-in-place concrete structure is carried out changing fill out, cure process, set up bowl fastening type or fastener type steel pipe scaffold, its end face is adjusted to various pouring structure shape as required, jacking and Tuo Nei distribution beam are installed, then formwork erection, assembling reinforcement concreting, is raft support method cast-in-place.
The shortcoming of prior art:
1. cast-in-place for beam-column holder method, can in land or use waterborne, need at each across inserted to play steel pipe pile below concrete structure or prefabricated tubular pile basis, make little cushion cap, need the steel pipe pile or prefabricated tubular pile, reinforcing bar and the concrete that consume some, this portion of material reclaims difficult or value is low, and particularly in-water foundation recovery difficult is very large.Need more heavy mechanical equipment: land piling needs pile driver, and marine piling needs pile driving barge, the peaces processed such as the steel pipe post in beam-column holder method and support need loop wheel machine, and waterborne needs hangs ship.Steel pipe support is heavier, and dismounting falls to use not easily.
2. cast-in-place for raft support method, use on land only, dismounting is fallen with more convenient than steel pipe support method, and main equipment uses less, but requires that bearing capacity of foundation soil is higher.Often need to change ground and fill out, build place hardened concrete, if at weak fault place or use raft support method waterborne, basement process cost is very high.
3. beam-column holder method and raft support method all need repeatedly to fall to use, the mounting or dismounting such as steel pipe and support need to use loop wheel machine, hang the crane gears such as ship, and full framing mounting or dismounting need more artificial unloading, also need loop wheel machine with the use of, two kinds of method convenience for construction are limited.
4. beam-column holder and full framing all need hole-specifically to install, and hole-specifically carry out load precompressed, and workload is large, and labour cost is large, dangerous, uneconomical.
5. the mounting or dismounting of beam-column holder and full framing all belong to work high above the ground, and security risk is large, and because support needs repeatedly to pacify to tear open, security risk is long, terminate from support installing construction to support removing construction always.
Summary of the invention
For solving the problem, the invention provides a kind of arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge and method, save hole-specifically mounting or dismounting and the precompressed of beam-column holder or full framing, reduce auxiliary steel member use amount and improve steel utilization ratio, reduce working measure expense, accomplish disposable input, repeatedly income, convenient construction, reduces construction safety risk.
The technical solution adopted for the present invention to solve the technical problems is: a kind of arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge, the edge-beam comprising slideway on the edge-beam that is contained in and watered both sides and watered across both sides and two ends are contained in the freely-supported suspension bracket on described slideway end face, the some upper distribution beam of top distribution of described freely-supported suspension bracket, each described upper distribution beam all connects suspension rod, each described boom foot distribution beam under the below of freely-supported suspension bracket all connects, crossbeam is laid at described lower distribution beam top, described crossbeam is arranged and builds needle beam, the template system of stringer and bridge deck.
Be further used as the improvement of technical solution of the present invention, described freely-supported suspension bracket is assembled by some beret truss, is provided with the bearing be slidably connected between the two ends of described freely-supported suspension bracket and described slideway.
Be further used as the improvement of technical solution of the present invention, described suspension rod comprises the front suspension rod and rear suspension bar that are contained in both sides before and after described template system respectively, described front suspension rod and rear suspension bar are provided with elevator above distribution beam on described, between described elevator and upper distribution beam, lifting jack are housed.
Be further used as the improvement of technical solution of the present invention, also comprise the walking suspender belt be contained on the rear side sections concrete of having built, the lower end of described walking suspender belt connects hanging roller, and the rear end of described lower distribution beam arranges the long joining section be inserted in described hanging roller.
Be further used as the improvement of technical solution of the present invention, described freely-supported suspension bracket top is connected with upper distribution beam and lower distribution beam bolt respectively with bottom.
A kind of arch bridge needle beam, stringer and bridge deck cast-in-situ construction method, comprise the following steps:
S10. prefabricated upper distribution beam, lower distribution beam, crossbeam and template system, the edge-beam that both sides have been watered installs slideway, the freely-supported suspension bracket of the assembled edge-beam watered across both sides on described slideway end face, top along described freely-supported suspension bracket arranges some upper distribution beam, each described upper distribution beam all connects suspension rod, each described boom foot distribution beam under the below of freely-supported suspension bracket all connects, crossbeam is laid at described lower distribution beam top, described crossbeam is arranged the template system of building needle beam, stringer and bridge deck;
S20. promote lower distribution beam by each described suspension rod, described template system rises to lower distribution beam and builds position;
S30. assembling reinforcement, prestressed pipeline and penetrate steel strand, adjustment template system absolute altitude, concreting, after concrete strength and the length of time reach designing requirement, prestress wire in sections and vacuum grouting are originally built in stretch-draw;
S40. by putting down distribution beam under each described suspension rod, described template system drops to the needle beam, stringer and the bridge deck concrete that leave built completely with lower distribution beam;
The sections concrete of S50. having built at rear side is installed walking suspender belt, the lower end of described walking suspender belt connects hanging roller, the rear end spreading of described lower distribution beam is inserted in hanging roller, make it Free-rolling to move, traction freely-supported suspension bracket moves forward to next along described slideway end face and builds sections;
S60. repeat step S20 ~ S50, complete the pouring construction of whole sections.
Be further used as the improvement of technical solution of the present invention, also comprise step S11 between step S10 and S20, step S11 is included in and described crossbeam arranges load to carry out the intensity of the hanger system of load precompressed inspection freely-supported suspension bracket, upper distribution beam, suspension rod, lower distribution beam and crossbeam composition, rigidity and stability.
Be further used as the improvement of technical solution of the present invention, described crossbeam arranged after laying oil skin in load employing sand pocket embankment and the low groove among sand pocket embankment and carry out to the mode of water filling in oilcloth.
Be further used as the improvement of technical solution of the present invention, described suspension rod comprises the front suspension rod and rear suspension bar that are contained in both sides before and after described template system respectively, described front suspension rod and rear suspension bar are provided with elevator above distribution beam on described, between described elevator and upper distribution beam, lifting jack is housed, realizes the lifting of suspension rod by lifting jack pushing tow elevator and transfer.
Be further used as the improvement of technical solution of the present invention, described freely-supported suspension bracket adopts the assembled beret truss of tower crane to form, the bearing be slidably connected is provided with between the two ends of described freely-supported suspension bracket and described slideway, in step S50, rack winch, tackle pulley and wire rope are installed in bearing front end below freely-supported suspension bracket, strengthen ground way, slideway end face smears lithium saponify, draw bearing with hoist engine, complete freely-supported suspension bracket and move forward.
Beneficial effect of the present invention: the edge-beam that this arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge utilize dual-side to water is fulcrum, between the edge-beam that side has watered, freely-supported suspension bracket is set, the edge-beam end face watered arranges slideway, slideway can either bear working load, again can as the slipping base of slippage.Arrange above freely-supported suspension bracket some on distribution beam, each upper distribution beam arranges load-bearing suspension rod.Suspension rod lower end connects lower distribution beam, lower distribution beam is laid crossbeam, upper distribution beam and lower distribution beam one_to_one corresponding, penetrates suspension rod anchoring, crossbeam is provided with template system.During construction, put in place by the suspension rod template system that hoists, build needle beam, stringer and bridge deck, after concrete strength and the length of time reach designing requirement, prestress wire and vacuum grouting in sections are originally built in stretch-draw, transfer template system by each suspension rod, then make it to move to next by trailer system traction and build sections.Continuous reciprocation cycle, until the construction completing whole needle beam, stringer and bridge deck.
This hanger system is once assembled, Long-Time Service, and to the last one do not need mounting or dismounting across completing, do not need precompressed again, construction period does not need big machinery to lift yet, and material saving less manpower can accelerate the duration.It is less that this structure consumes auxiliary material; Constructed one across after be movable to next across, easy to use; Non-floor-bracket, all work progresss all complete on moveable operation platform, reduce the work high above the ground time, security risk is lower, and after installation, do not need Large-scale Hoisting equipment coordinative construction, without console mode support system, do not affect by the unfavorable terrain such as weak fault, river, can enforcement under complex environment, do not limit by geographical environment.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is this structural representation arch bridge cross-sectional structure schematic diagram;
Fig. 2 is embodiment of the present invention arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge structural front view;
Fig. 3 is embodiment of the present invention arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge structure side view;
Fig. 4 is embodiment of the present invention arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge move forward structure side view.
Detailed description of the invention
With reference to Fig. 1 ~ Fig. 4, the invention provides a kind of arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge, the edge-beam 1 comprising slideway 2 on the edge-beam 1 that is contained in and watered both sides and watered across both sides and two ends are contained in the freely-supported suspension bracket 3 on described slideway 2 end face, described freely-supported suspension bracket 3 is assembled by some beret truss, is provided with the bearing 31 be slidably connected between the two ends of described freely-supported suspension bracket 3 and described slideway 2.The some upper distribution beam 4 of top distribution of described freely-supported suspension bracket 3, each described upper distribution beam 4 all connects suspension rod 5, bottom each described suspension rod 5 under the below of freely-supported suspension bracket 3 all connects distribution beam 6, crossbeam 61 is laid at described lower distribution beam 6 top, described crossbeam 61 is arranged the template system 62 of building needle beam, stringer and bridge deck.Described freely-supported suspension bracket 3 top and bottom are connected with upper distribution beam 4 and lower distribution beam 6 bolt respectively.
Described suspension rod 5 is finish rolling deformed bar, described suspension rod 5 comprises the front suspension rod 51 and rear suspension bar 52 that are contained in both sides before and after described template system respectively, described front suspension rod 51 and rear suspension bar 52 are provided with elevator 53 above distribution beam 4 on described, between described elevator 53 and upper distribution beam 4, lifting jack 54 are housed.
Also comprise the walking suspender belt 7 be contained on the rear side sections concrete of having built, the lower end of described walking suspender belt 7 connects hanging roller 71, and the rear end of described lower distribution beam 6 arranges the long joining section 63 be inserted in described hanging roller 71.
A kind of arch bridge needle beam, stringer and bridge deck cast-in-situ construction method, comprise the following steps:
S10. prefabricated upper distribution beam 4, lower distribution beam 6, crossbeam 61 and template system 62, the edge-beam 1 that both sides have been watered installs slideway 2, the freely-supported suspension bracket 3 of the assembled edge-beam 1 watered across both sides on described slideway 2 end face, described freely-supported suspension bracket 3 adopts the assembled beret truss of tower crane to form, the two ends of described freely-supported suspension bracket 3 are provided with the bearing 31 be slidably connected between described slideway 2, top along described freely-supported suspension bracket 3 arranges 7 upper distribution beam 4, each described upper distribution beam 4 all connects suspension rod 5, bottom each described suspension rod 5 under the below of freely-supported suspension bracket 3 all connects distribution beam 6, crossbeam 61 is laid at described lower distribution beam 6 top, described crossbeam 61 is arranged and builds needle beam, the template system 62 of stringer and bridge deck, described suspension rod 5 comprises the front suspension rod 51 and rear suspension bar 52 that are contained in both sides before and after described template system 62 respectively, described front suspension rod 51 and rear suspension bar 52 are provided with elevator 53 above distribution beam 4 on described, 28t spiral lifting jack 54 is housed between described elevator 53 and upper distribution beam 4,
S11. arrange on described crossbeam 61 load with carry out load precompressed inspection freely-supported suspension bracket 3, on the intensity of hanger system of distribution beam 4, suspension rod 5, lower distribution beam 6 and crossbeam 61 composition, rigidity and stability, described crossbeam 61 is arranged load adopt lay oil skin in sand pocket embankment and the low groove among sand pocket embankment after carry out to the mode of water filling in oilcloth;
S20. promote suspension rod 5 by 28t spiral lifting jack 54 pushing tow elevator 53, promote lower distribution beam 6 by each described suspension rod 5, described template system 62 rises to lower distribution beam 6 and builds position;
S30. assembling reinforcement, prestressed pipeline and penetrate steel strand, adjustment template system 62 absolute altitude, concreting, after concrete strength and the length of time reach designing requirement, prestress wire in sections and vacuum grouting are originally built in stretch-draw;
S40. by transferring suspension rod 5 after 28t spiral lifting jack 54 pushing tow elevator 53, put down distribution beam 65 times by each described suspension rod, described template system 62 drops to the needle beam, stringer and the bridge deck concrete that leave built completely with lower distribution beam 6;
The sections concrete of S50. having built at rear side is installed walking suspender belt 7, the lower end of described walking suspender belt 7 connects hanging roller 71, to be inserted in hanging roller 71 after 5 lower distribution beam 6 rear end spreadings in 7 described lower distribution beam 6, make it Free-rolling to move, rack winch, tackle pulley and wire rope are installed in bearing 31 front end below freely-supported suspension bracket 3 both ends, strengthen ground way 2, slideway 2 end face smears lithium saponify, with hoist engine traction bearing 31, traction freely-supported suspension bracket 3 moves forward to next along described slideway 2 end face and builds sections;
S60. repeat step S20 ~ S50, complete the pouring construction of whole sections.
S70. after last has been built across needle beam, stringer and bridge deck, lower distribution beam 6, crossbeam 61 and bed die system 62 are transferred spreading suspension rod 5 by the jacking of 28t spiral lifting jack 54 makes it put to ground dismounting, and the freely-supported suspension bracket 3 in beam face and slideway 2 system etc. adopt tower crane or beam face automobile loop wheel machine to remove.
The edge-beam 1 that this arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge utilize dual-side to water is fulcrum, between the edge-beam 1 that both sides have been watered, freely-supported suspension bracket 3 is set, the edge-beam 1 watered arranges slideway 2, slideway 2 can either bear working load, again can as the slipping base of slippage.Arrange above freely-supported suspension bracket 3 some on distribution beam 4, each upper distribution beam 4 arranges load-bearing suspension rod 5.Suspension rod 5 lower end connects lower distribution beam 6, lower distribution beam 6 is laid crossbeam 61, and upper distribution beam 4 and lower distribution beam 6 one_to_one corresponding, penetrate suspension rod 5 anchoring, crossbeam 61 is provided with template system 62.During construction, put in place by suspension rod 5 template system 62 that hoists, build needle beam, stringer and bridge deck, after concrete strength and the length of time reach designing requirement, after prestress wire in sections in needle beam and true mud jacking are originally built in stretch-draw, transfer template system 62 by each suspension rod 5, then by trailer system traction move it to next build sections.Continuous reciprocation cycle, until the construction completing whole needle beam, stringer and bridge deck.
This hanger system is once assembled, Long-Time Service, and to the last one do not need mounting or dismounting across completing, do not need precompressed again, construction period does not need big machinery to lift yet, and material saving less manpower can accelerate the duration.It is less that this structure consumes auxiliary material; Constructed one across after be movable to next across, easy to use; Non-floor-bracket, all work progresss all complete on moveable operation platform, reduce the work high above the ground time, security risk is lower, and after installation, do not need Large-scale Hoisting equipment coordinative construction, without console mode support system, do not affect by the unfavorable terrain such as weak fault, river, can enforcement under complex environment, do not limit by geographical environment.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (10)
1. an arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge, it is characterized in that: comprise slideway on the edge-beam that is contained in and watered both sides and the edge-beam that watered across both sides and two ends are contained in the freely-supported suspension bracket on described slideway end face, the some upper distribution beam of top distribution of described freely-supported suspension bracket, each described upper distribution beam all connects suspension rod, each described boom foot distribution beam under the below of freely-supported suspension bracket all connects, crossbeam is laid at described lower distribution beam top, described crossbeam is arranged the template system of building needle beam, stringer and bridge deck.
2. arch bridge needle beam according to claim 1, stringer and bridge deck cast-in-place construction travelling bridge, it is characterized in that: described freely-supported suspension bracket is assembled by some beret truss, between the two ends of described freely-supported suspension bracket and described slideway, be provided with the bearing be slidably connected.
3. arch bridge needle beam according to claim 1, stringer and bridge deck cast-in-place construction travelling bridge, it is characterized in that: described suspension rod comprises the front suspension rod and rear suspension bar that are contained in both sides before and after described template system respectively, described front suspension rod and rear suspension bar are provided with elevator above distribution beam on described, between described elevator and upper distribution beam, lifting jack are housed.
4. arch bridge needle beam according to claim 1, stringer and bridge deck cast-in-place construction travelling bridge, it is characterized in that: also comprise the walking suspender belt be contained on the rear side sections concrete of having built, the lower end of described walking suspender belt connects hanging roller, and the rear end of described lower distribution beam arranges the long joining section be inserted in described hanging roller.
5. arch bridge needle beam according to claim 1, stringer and bridge deck cast-in-place construction travelling bridge, is characterized in that: described freely-supported suspension bracket top is connected with upper distribution beam and lower distribution beam bolt respectively with bottom.
6. arch bridge needle beam, stringer and a bridge deck cast-in-situ construction method, is characterized in that, comprise the following steps:
S10. prefabricated upper distribution beam, lower distribution beam, crossbeam and template system, the edge-beam that both sides have been watered installs slideway, the freely-supported suspension bracket of the assembled edge-beam watered across both sides on described slideway end face, top along described freely-supported suspension bracket arranges some upper distribution beam, each described upper distribution beam all connects suspension rod, each described boom foot distribution beam under the below of freely-supported suspension bracket all connects, crossbeam is laid at described lower distribution beam top, described crossbeam is arranged the template system of building needle beam, stringer and bridge deck;
S20. promote lower distribution beam by each described suspension rod, described template system rises to lower distribution beam and builds position;
S30. assembling reinforcement, prestressed pipeline and penetrate steel strand, adjustment template system absolute altitude, concreting, after concrete strength and the length of time reach designing requirement, prestress wire in sections and vacuum grouting are originally built in stretch-draw;
S40. by putting down distribution beam under each described suspension rod, described template system drops to the needle beam, stringer and the bridge deck concrete that leave built completely with lower distribution beam;
The sections concrete of S50. having built at rear side is installed walking suspender belt, the lower end of described walking suspender belt connects hanging roller, the rear end spreading of described lower distribution beam is inserted in hanging roller, make it Free-rolling to move, traction freely-supported suspension bracket moves forward to next along described slideway end face and builds sections;
S60. repeat step S20 ~ S50, complete the pouring construction of whole sections.
7. arch bridge needle beam according to claim 6, stringer and bridge deck cast-in-situ construction method, it is characterized in that: also comprise step S11 between step S10 and S20, step S11 is included in and described crossbeam arranges load to carry out the intensity of the hanger system of load precompressed inspection freely-supported suspension bracket, upper distribution beam, suspension rod, lower distribution beam and crossbeam composition, rigidity and stability.
8. arch bridge needle beam according to claim 7, stringer and bridge deck cast-in-situ construction method, is characterized in that: described crossbeam is arranged after laying oil skin in load employing sand pocket embankment and the low groove among sand pocket embankment and carry out to the mode of water filling in oilcloth.
9. arch bridge needle beam according to claim 6, stringer and bridge deck cast-in-situ construction method, it is characterized in that: described suspension rod comprises the front suspension rod and rear suspension bar that are contained in both sides before and after described template system respectively, described front suspension rod and rear suspension bar are provided with elevator above distribution beam on described, between described elevator and upper distribution beam, lifting jack is housed, realizes the lifting of suspension rod by lifting jack pushing tow elevator and transfer.
10. arch bridge needle beam according to claim 6, stringer and bridge deck cast-in-situ construction method, it is characterized in that: described freely-supported suspension bracket adopts the assembled beret truss of tower crane to form, the bearing be slidably connected is provided with between the two ends of described freely-supported suspension bracket and described slideway, in step S50, rack winch, tackle pulley and wire rope are installed in bearing front end below freely-supported suspension bracket, strengthen ground way, slideway end face smears lithium saponify, draw bearing with hoist engine, complete freely-supported suspension bracket and move forward.
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| CN201510047430.3A CN104631333B (en) | 2015-01-29 | 2015-01-29 | Arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge and method |
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| CN201510047430.3A CN104631333B (en) | 2015-01-29 | 2015-01-29 | Arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge and method |
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| CN112878204A (en) * | 2021-02-04 | 2021-06-01 | 湖南省第六工程有限公司 | Construction process of cast-in-place anchor beam hanger system |
| WO2021212921A1 (en) * | 2020-04-21 | 2021-10-28 | 中铁广州工程局集团有限公司 | Construction system for widened section of half-through arch bridge |
| CN113863660A (en) * | 2021-10-26 | 2021-12-31 | 中国铁路设计集团有限公司 | Suspended template system of underpass railway bridge pile plate structure and construction method |
| CN114438889A (en) * | 2022-01-25 | 2022-05-06 | 中国十九冶集团有限公司 | Construction method for pouring cast-in-situ bridge deck between reinforced concrete composite beams |
| CN115059026A (en) * | 2022-07-26 | 2022-09-16 | 中交(福州)建设有限公司 | Construction method for reversely hoisting cast-in-place bridge deck slab by supporting steel beam on top of sluice pier |
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| CN112627048A (en) * | 2021-01-07 | 2021-04-09 | 中铁十六局集团第三工程有限公司 | Comprehensive prepressing method and device for tied arch bridge beam suspension construction beam lattice system |
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Effective date of registration: 20180130 Address after: Nansha District Nansha street Guangzhou city Guangdong province 510032 Port Street No. 1 Port Avenue South of Hong Kong Air China court office building No. 1 room 2502 Co-patentee after: China Railway Guangzhou Engineering Bureau Group Bridge Engineering Co., Ltd. Patentee after: China Railway Guangzhou Engineering Bureau Group Co Ltd Address before: 510660 Guangzhou Science City, Guangdong Xiang Shan Road, No. 11 Co-patentee before: Bridge branch company of China Railway Port Channel Engineering Co., Ltd. Patentee before: China Railway Port and Channel Engineering Group Co., Ltd. |