CN104631333B - Arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge and method - Google Patents
Arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge and method Download PDFInfo
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- CN104631333B CN104631333B CN201510047430.3A CN201510047430A CN104631333B CN 104631333 B CN104631333 B CN 104631333B CN 201510047430 A CN201510047430 A CN 201510047430A CN 104631333 B CN104631333 B CN 104631333B
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- stringer
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Classifications
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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
Abstract
The invention discloses a kind of arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge and method, the freely-supported suspension bracket that the edge-beam including the slideway being contained on the edge-beam that both sides have been watered and watered across both sides and two ends are contained on slideway, the top of freely-supported suspension bracket is distributed some upper distribution beam, it is all connected with suspension rod in each upper distribution beam, each boom foot is all connected with lower distribution beam in the lower section of freely-supported suspension bracket, crossbeam is laid at lower distribution beam top, and crossbeam arranges the template system pouring needle beam, stringer and floorings.This structure consumption auxiliary material is less；During construction, freely-supported suspension bracket can along slideway forward slip, complete one across after be movable to next across, easy to use；Non-floor-bracket, all work progress all complete on moveable operation platform, and security risk is relatively low, and are not required to Large-scale Hoisting equipment coordinative construction after installation, are not limited by 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 floorings 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 increasingly being applied in town road as a kind of bridge type attractive in appearance.For half-through steel box tied arch bridge, above main pier, often there is one " Y type " triangle frame structure the most integral with upper steel case arch.This structure construction order is usually: first 2 " Y type " triangle frame concrete on construction main pier bearing platform, then 2 edge-beams above constructing, " Y type " structure is made to become triangular structure, construct again the large-scale transverse beam (before, during and after Fen) between two triangular structures, finally 2 edge-beams of construction and 3 large-scale transverse beams surround needle beam, stringer and the floorings 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 referred to as needle beam, stringer and floorings.For needle beam, stringer and floorings cast-in-place construction in half-through steel box tied arch bridge triangle frame structure, the construction method of economical rationality according to construction features and on-site actual situations, can be selected.
Under normal circumstances, needle beam, stringer and floorings 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, 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 pour support as crossing over the formation of beam type supporting construction, and 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 casting concrete, it is beam-column holder method cast-in-place.
2. raft support method: carry out changing by the ground below cast-in-place concrete structure 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 casting concrete, is raft support method cast-in-place.
The shortcoming of prior art:
1. cast-in-place for beam-column holder method, can be in land or use waterborne, need on each inserted to play steel-pipe pile or prefabricated tubular pile basis below xoncrete structure, make little cushion cap, need to consume a number of steel-pipe pile or prefabricated tubular pile, reinforcing bar and concrete, this portion of material reclaims difficulty or value is low, and particularly in-water foundation recovery difficult is the biggest.Needing more heavy mechanical equipment: land piling needs piling machine, marine piling to need pile driving barge, the peace processed such as steel pipe post in beam-column holder method and support needs loop wheel machine, waterborne needs to hang ship.Steel pipe support is heavier, and dismounting is fallen with being difficult to.
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 foundation bearing capacity is higher.Generally requiring to change ground and fill out, pour place maturing, if at weak fault or use raft support method waterborne, basement process cost is the highest.
3. beam-column holder method and raft support method are required to repeatedly fall use, and 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, it is also desirable to loop wheel machine with the use of, two kinds of method convenience for construction are limited.
4. beam-column holder and full framing are required to hole-specifically install, and hole-specifically carry out load precompressed, and workload is big, and labour cost is big, 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 big, and because support needs repeatedly to pacify to tear open, security risk is long, start to support removing construction to terminate from support installation always.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge and method, save beam-column holder or the hole-specifically mounting or dismounting of full framing and precompressed, reduce auxiliary steel member usage amount and improve steel utilization ratio, reduce working measure expense, accomplish disposably to put into, 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 floorings cast-in-place construction travelling bridge, edge-beam and the two ends including the slideway being contained on the edge-beam that both sides have been watered and watered across both sides are contained in the freely-supported suspension bracket on described slideway end face, the top of described freely-supported suspension bracket is distributed some upper distribution beam, it is all connected with suspension rod in each described upper distribution beam, each described boom foot is all connected with lower distribution beam in the lower section of freely-supported suspension bracket, crossbeam is laid at described lower distribution beam top, arrange on described crossbeam and pour needle beam, stringer and the template system of floorings.
Being 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, between two ends and the described slideway of described freely-supported suspension bracket, the bearing being slidably connected.
It is further used as the improvement of technical solution of the present invention, before and after described suspension rod includes being attached separately to described template system
The front suspension rod of both sides and rear suspension bar, on described front suspension rod and rear suspension bar on described distribution beam be arranged over elevator, equipped with lifting jack between described elevator and upper distribution beam.
Being further used as the improvement of technical solution of the present invention, also include the walking suspender belt being contained on the sections concrete that rear side has poured, the lower end of described walking suspender belt connects hanging roller, and the rear end of described lower distribution beam arranges and is inserted in the long joining section in described hanging roller.
Being further used as the improvement of technical solution of the present invention, described freely-supported suspension bracket top and bottom are connected with upper distribution beam and lower distribution beam bolt respectively.
A kind of arch bridge needle beam, stringer and floorings cast-in-situ construction method, comprise the following steps:
The most prefabricated upper distribution beam, lower distribution beam, crossbeam and template system, the edge-beam that both sides have been watered is installed 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, it is all connected with suspension rod in each described upper distribution beam, each described boom foot is all connected with lower distribution beam in the lower section of freely-supported suspension bracket, crossbeam is laid at described lower distribution beam top, and described crossbeam arranges the template system pouring needle beam, stringer and floorings；
S20. promoting lower distribution beam by each described suspension rod, described template system rises to pour position with lower distribution beam；
S30. assembling reinforcement, prestressed pipeline and penetrate steel strand wires, adjust template system absolute altitude, casting concrete, reach after design requires until concrete strength and age, stretch-draw originally pours the prestress wire in sections and vacuum grouting；
S40. by putting down distribution beam under each described suspension rod, described template system drops to fully out needle beam, stringer and the bridge deck concrete poured with lower distribution beam；
S50., walking suspender belt is installed on the sections concrete that rear side has poured, 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, makes it freely to roll movement, and traction freely-supported suspension bracket moves forward to next along described slideway end face and pours sections；
S60. repeat step S20～S50, complete the pouring construction of whole sections.
It is further used as the improvement of technical solution of the present invention, also including step S11 between step S10 and S20, step S11 is included on described crossbeam and arranges load to carry out load precompressed inspection freely-supported suspension bracket, upper distribution beam, suspension rod, lower distribution beam and the intensity of hanger system, rigidity and the stability of crossbeam composition.
Being further used as the improvement of technical solution of the present invention, after laying tarpaulin in described crossbeam arranges load employing sand pocket embankment and the low groove among sand pocket embankment, in oilcloth, the mode of water filling is carried out.
It is further used as the improvement of technical solution of the present invention, described suspension rod includes being attached separately to front suspension rod and the rear suspension bar of both sides before and after described template system, on described front suspension rod and rear suspension bar on described distribution beam be arranged over elevator, equipped with lifting jack between described elevator and upper distribution beam, realize the lifting of suspension rod by lifting jack pushing tow elevator and transfer.
It is further used as the improvement of technical solution of the present invention, described freely-supported suspension bracket uses tower crane assembly beret truss to form, it is provided with, between two ends and the described slideway of described freely-supported suspension bracket, the bearing being slidably connected, in step S50, rack winch, tackle pulley and steel wire rope are installed in bearing front end below freely-supported suspension bracket, strengthen ground way, smear lithium saponify on slideway end face, draw bearing with hoist engine, complete freely-supported suspension bracket and move forward.
Beneficial effects of the present invention: the edge-beam that this arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge utilize dual-side to water is fulcrum, freely-supported suspension bracket is set between the edge-beam that side has watered, the edge-beam end face watered arranges slideway, slideway can either bear construction loads, again can be as the slipping base of sliding.Being provided above distribution beam on some at freely-supported suspension bracket, each upper distribution beam arranges load-bearing suspension rod.Downrod lower end connects lower distribution beam, and 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, pour needle beam, stringer and floorings, after concrete strength and age reach design requirement, stretch-draw originally pours prestress wire and vacuum grouting in sections, transfer template system by each suspension rod, be then allowed to movement by trailer system traction and pour sections to next.Constantly reciprocation cycle, until completing the construction of whole needle beam, stringer and floorings.
This hanger system is the most assembled, life-time service, and to the last one across completing all to be not required to mounting or dismounting, it is not required that precompressed again, and construction period need not big machinery lifting, material saving less manpower, can accelerate the duration.This structure consumption auxiliary material is less；Constructed one across after be movable to next across, easy to use；Non-floor-bracket, all work progress all complete on moveable operation platform, reduce the work high above the ground time, security risk is relatively low, and after installation, it is not required to Large-scale Hoisting equipment coordinative construction, without console model support system, do not affected by the unfavorable terrain such as weak fault, river, can enforcement under complex environment, do not limited by geographical environment.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings:
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 floorings cast-in-place construction travelling bridge structural front view；
Fig. 3 is embodiment of the present invention arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge structural side view；
Fig. 4 is that embodiment of the present invention arch bridge needle beam, stringer and floorings cast-in-place construction travelling bridge move forward structural 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 floorings cast-in-place construction travelling bridge, edge-beam 1 and the two ends including the slideway 2 being contained on the edge-beam 1 watered both sides and watered across both sides 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, between two ends and the described slideway 2 of described freely-supported suspension bracket 3, the bearing 31 being slidably connected.The top of described freely-supported suspension bracket 3 is distributed some upper distribution beam 4, it is all connected with suspension rod 5 in each described upper distribution beam 4, it is all connected with lower distribution beam 6 in the lower section of freely-supported suspension bracket 3 bottom each described suspension rod 5, crossbeam 61 is laid at described lower distribution beam 6 top, and described crossbeam 61 arranges the template system 62 pouring needle beam, stringer and floorings.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 includes being attached separately to front suspension rod 51 and the rear suspension bar 52 of both sides before and after described template system, on described front suspension rod 51 and rear suspension bar 52 on described distribution beam 4 be arranged over elevator 53, equipped with lifting jack 54 between described elevator 53 and upper distribution beam 4.
Also including the walking suspender belt 7 being contained on the sections concrete that rear side has poured, the lower end of described walking suspender belt 7 connects hanging roller 71, and the rear end of described lower distribution beam 6 arranges and is inserted in the long joining section 63 in described hanging roller 71.
A kind of arch bridge needle beam, stringer and floorings cast-in-situ construction method, comprise the following steps:
nullThe most 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 is installed 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 uses tower crane assembly beret truss to form，The two ends of described freely-supported suspension bracket 3 are provided with the bearing 31 being slidably connected between described slideway 2，Top along described freely-supported suspension bracket 3 arranges 7 upper distribution beam 4，It is all connected with suspension rod 5 in each described upper distribution beam 4，It is all connected with lower distribution beam 6 in the lower section of freely-supported suspension bracket 3 bottom each described suspension rod 5，Crossbeam 61 is laid at described lower distribution beam 6 top，Arrange on described crossbeam 61 and pour needle beam、The template system 62 of stringer and floorings，Described suspension rod 5 includes front suspension rod 51 and the rear suspension bar 52 being attached separately to described template system 62 both sides front and back，On described front suspension rod 51 and rear suspension bar 52 on described distribution beam 4 be arranged over elevator 53，Equipped with 28t spiral lifting jack 54 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 distribution beam 4, suspension rod 5, lower distribution beam 6 and the intensity of hanger system, rigidity and the stability of crossbeam 61 composition, the mode of water filling in oilcloth that described crossbeam 61 arranged in load uses sand pocket embankment and the low groove among sand pocket embankment after laying tarpaulin is carried out；
S20. promoting 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 pour position with lower distribution beam 6；
S30. assembling reinforcement, prestressed pipeline and penetrate steel strand wires, adjust template system 62 absolute altitude, casting concrete, reach after design requires until concrete strength and age, stretch-draw originally pours the prestress wire in sections and vacuum grouting；
S40. suspension rod 5 is transferred by after 28t spiral lifting jack 54 pushing tow elevator 53, putting down distribution beam 6 for 5 times by each described suspension rod, described template system 62 drops to fully out needle beam, stringer and the bridge deck concrete poured with lower distribution beam 6；
S50., walking suspender belt 7 is installed on the sections concrete that rear side has poured, the lower end of described walking suspender belt 7 connects hanging roller 71, it is inserted in hanging roller 71 after 5 lower distribution beam 6 rear end spreadings in 7 described lower distribution beam 6, make it freely to roll movement, rack winch, tackle pulley and steel 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, drawing bearing 31 with hoist engine, traction freely-supported suspension bracket 3 moves forward to next along described slideway 2 end face and pours sections；
S60. repeat step S20～S50, complete the pouring construction of whole sections.
S70. last is after needle beam, stringer and floorings have poured, by 28t spiral lifting jack 54 jacking, lower distribution beam 6, crossbeam 61 and bed die system 62 are transferred spreading suspension rod 5 makes it put to ground dismounting, and the freely-supported suspension bracket 3 in beam face and slideway 2 system etc. use tower crane or beam face automobile loop wheel machine to remove.
The edge-beam 1 that this arch bridge needle beam, stringer and floorings 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, on the edge-beam 1 watered, slideway 2 is set, slideway 2 can either bear construction loads, again can be as the slipping base of sliding.Being provided above distribution beam 4 on some at freely-supported suspension bracket 3, each upper distribution beam 4 arranges load-bearing suspension rod 5.Suspension rod 5 lower end connects lower distribution beam 6, and lower distribution beam 6 is laid crossbeam 61, upper distribution beam 4 and lower distribution beam 6 one_to_one corresponding, and penetrating suspension rod 5 anchors, and crossbeam 61 is provided with template system 62.During construction, put in place by suspension rod 5 template system 62 that hoists, pour needle beam, stringer and floorings, after concrete strength and age reach design requirement, after prestress wire that stretch-draw originally pours in sections in needle beam and true mud jacking, transfer template system 62 by each suspension rod 5, then move it to next by trailer system traction and pour sections.Constantly reciprocation cycle, until completing the construction of whole needle beam, stringer and floorings.
This hanger system is the most assembled, life-time service, and to the last one across completing all to be not required to mounting or dismounting, it is not required that precompressed again, and construction period need not big machinery lifting, material saving less manpower, can accelerate the duration.This structure consumption auxiliary material is less；Constructed one across after be movable to next across, easy to use；Non-floor-bracket, all work progress all complete on moveable operation platform, reduce the work high above the ground time, security risk is relatively low, and after installation, it is not required to Large-scale Hoisting equipment coordinative construction, without console model support system, do not affected by the unfavorable terrain such as weak fault, river, can enforcement under complex environment, do not limited 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 on the premise of spirit of the present invention, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (5)
1. an arch bridge needle beam, stringer and floorings cast-in-situ construction method, it is characterised in that comprise the following steps:
The most prefabricated upper distribution beam, lower distribution beam, crossbeam and template system, the edge-beam that both sides have been watered is installed 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, it is all connected with suspension rod in each described upper distribution beam, each described boom foot is all connected with lower distribution beam in the lower section of freely-supported suspension bracket, crossbeam is laid at described lower distribution beam top, and described crossbeam arranges the template system pouring needle beam, stringer and floorings；
S20. promoting lower distribution beam by each described suspension rod, described template system rises to pour position with lower distribution beam；
S30. assembling reinforcement, prestressed pipeline and penetrate steel strand wires, adjust template system absolute altitude, casting concrete, reach after design requires until concrete strength and age, stretch-draw originally pours the prestress wire in sections and vacuum grouting；
S40. by putting down distribution beam under each described suspension rod, described template system drops to fully out needle beam, stringer and the bridge deck concrete poured with lower distribution beam；
S50., walking suspender belt is installed on the sections concrete that rear side has poured, 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, makes it freely to roll movement, and traction freely-supported suspension bracket moves forward to next along described slideway end face and pours sections；
S60. repeat step S20～S50, complete the pouring construction of whole sections.
Arch bridge needle beam the most according to claim 1, stringer and floorings cast-in-situ construction method, it is characterized in that: also include step S11, step S11 to be included on described crossbeam between step S10 and S20 and load is set to carry out load precompressed inspection freely-supported suspension bracket, upper distribution beam, suspension rod, lower distribution beam and the intensity of hanger system, rigidity and the stability of crossbeam composition.
Arch bridge needle beam the most according to claim 2, stringer and floorings cast-in-situ construction method, it is characterised in that: after laying tarpaulin in arranging load employing sand pocket embankment and the low groove among sand pocket embankment on described crossbeam, in oilcloth, the mode of water filling is carried out.
Arch bridge needle beam the most according to claim 1, stringer and floorings cast-in-situ construction method, it is characterized in that: described suspension rod includes being attached separately to front suspension rod and the rear suspension bar of both sides before and after described template system, on described front suspension rod and rear suspension bar on described distribution beam be arranged over elevator, equipped with lifting jack between described elevator and upper distribution beam, realize the lifting of suspension rod by lifting jack pushing tow elevator and transfer.
Arch bridge needle beam the most according to claim 1, stringer and floorings cast-in-situ construction method, it is characterized in that: described freely-supported suspension bracket uses tower crane assembly beret truss to form, it is provided with, between two ends and the described slideway of described freely-supported suspension bracket, the bearing being slidably connected, in step S50, rack winch, tackle pulley and steel 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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| CN104631333B true CN104631333B (en) | 2017-01-04 |
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| 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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| CN103911957A (en) * | 2014-04-09 | 2014-07-09 | 中交隧道工程局有限公司 | Prestressed continuous box-girder cantilever construction basket |
| CN203904851U (en) * | 2014-04-21 | 2014-10-29 | 中铁三局集团有限公司 | Continuous beam side span straight section hanger support system |
| CN204551267U (en) * | 2015-01-29 | 2015-08-12 | 中铁港航局集团有限公司 | Arch bridge needle beam, stringer and bridge deck cast-in-place construction travelling bridge |
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| CN104631333A (en) | 2015-05-20 |
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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. |