CN105970838B - Deck Arch Bridges vault filler unloads and reinforced construction method and application - Google Patents

Deck Arch Bridges vault filler unloads and reinforced construction method and application Download PDF

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Publication number
CN105970838B
CN105970838B CN201610385626.8A CN201610385626A CN105970838B CN 105970838 B CN105970838 B CN 105970838B CN 201610385626 A CN201610385626 A CN 201610385626A CN 105970838 B CN105970838 B CN 105970838B
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China
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working
arch
deck
bridge
construction
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CN105970838A (en
Inventor
陈强
陈平
段献礼
刘灵勇
廖泽华
莫照
朱欣
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Hunan City University
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Hunan City University
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D4/00Arch-type bridges

Abstract

Prevent bridge from unloading and loading is unbalanced to cause the Deck Arch Bridges vault filler collapsed unloading and reinforced construction method and application in Deck Arch Bridges repairing and reinforcement the invention discloses a kind of, it is characterized in that it comprises the following steps:Bridge floor is divided into odd number working face from deck centre to both sides according to the length direction of bridge, the width of each working face is the ㎜ of 1000 ㎜~3000;Deck centre working face is excavated first, unloads deck paving and vault filler, carries out hogback cleaning, and seat slurry repairs main arch ring and spandrel arch disease;Then formwork erection backfills excavation face with plain concrete;It excavates the working face of surface both sides successively again, constructs by surface work progress and requirement, until all working surface construction finishes;The present invention can carry out repairing and reinforcement in the case where former arch bridge major part structure is motionless to Deck Arch Bridges, construction safety is reliable, simple, simultaneously, the plain concrete of backfill is tightly combined with main arch ring, spandrel arch, accordingly add main arch ring, spandrel arch thickness, reach consolidation effect, improve construction project quality.

Description

Deck Arch Bridges vault filler unloads and reinforced construction method and application
Technical field
The present invention relates to the reparation and reinforcing of a kind of arch bridge, specifically a kind of Deck Arch Bridges vault filler unloading with Reinforced construction method and application prevent that bridge unloading and loading are uneven more particularly to one kind in Deck Arch Bridges repairing and reinforcement Weighing apparatus causes the Deck Arch Bridges vault filler collapsed unloading and reinforced construction method and application.
Background technology
Deck Arch Bridges include masonry arch bridge, arch bridge with reinforced concrete slabs, double curvature arched bridge etc., and this structure type bridge exists China's application is wider, and particularly masonry arch bridge has nearly one thousand years history.In China the 1950s~eighties, as economy is sent out Exhibition, the wherein extensive use of armored concrete, double curvature arched bridge are promoted rapidly in the seventies, and it is convenient which has given full play to construction The characteristics of, steel are saved, convenient for materials, greatly accelerate construction speed.But used by the operation of decades, with public affairs The aging being continuously increased with material of the rapid development of road traffic, vehicle density and overloaded vehicle and the accumulation of structural damage, In addition the Deck Arch Bridges built before the eighties are low there are design grade, and at present, apparent disease and quality has occurred in bridge Defect, there are serious security risks.In this regard, need to usually consolidation process be carried out to it.Since this kind of bridge is big in use The arch ring of most arch bridges deforms, and design originally is caused linearly to be varied widely with pressure line, so that in repairing construction, Since construction unloading is unbalanced or Large Construction equipment uses, it is uneven with loading to easily lead to the reduction of main arch compressive region and unloading , there is bridge collapse phenomenon in weighing apparatus.
The content of the invention
Prevent that bridge unloading is unbalanced with loading in Deck Arch Bridges repairing and reinforcement the object of the present invention is to provide one kind Cause the Deck Arch Bridges vault filler collapsed unloading and reinforced construction method and application.
The present invention, which adopts the following technical scheme that, realizes its goal of the invention, a kind of unloading of Deck Arch Bridges vault filler with Reinforced construction method, it comprises the following steps:
(1) bridge floor is divided into odd number working face, the width of each working face from deck centre to both sides according to the length direction of bridge It spends for the ㎜ of 1000 ㎜~3000;
(2) deck centre working face is excavated first, unloads deck paving and vault filler, carries out hogback cleaning, and seat slurry is repaired Main arch ring and spandrel arch disease;
(3) and then formwork erection backfills excavation face with plain concrete;
(4) fill concrete conserves, and intensity is made to reach the ﹪ of 65 ﹪ of design strength~75;
(5) excavate the working face of surface both sides successively again, construct by surface work progress and requirement, directly It is finished to all working surface construction.
The present invention step (1) in, the working face of surface both sides is of same size.
During to make excavation, the lateral stressed variation equilibrium of small and former bridge is influenced on the variation of former bridge original structure longitudinal stress, this Invention step (5) in, the working face for excavating surface both sides successively is separated by one to excavate first with surface The working face of a working face.
To ensure the globality of priority casting concrete, there is not construction joint, the element of working face backfill of the present invention mixes Joint face between solidifying soil carries out wharf's pavement quality.
For ensure the globality of priority casting concrete and it is lateral stressed uniformly, the element of working face of the present invention backfill mixes Power transmission muscle is equipped between solidifying soil, is arranged by the ㎜ of 250 ㎜ of spacing~350, the ㎜ of a diameter of 10 ㎜ of the power transmission muscle~20, length is The ㎜ of 150 ㎜~250.
A kind of Deck Arch Bridges vault filler unloading as described above is with reinforced construction method in Deck Arch Bridges repairing and reinforcement In application.
Deck Arch Bridges of the present invention are masonry arch bridge or arch bridge with reinforced concrete slabs or double curvature arched bridge.
Due to the adoption of the above technical scheme, the present invention preferably realizes goal of the invention, changes the stringent unloading of tradition With loading procedure, in the case where former arch bridge major part structure is motionless Deck Arch Bridges can be carried out with repairing and reinforcement, and using machine Tool equipment multiple spot multistage operation alleviates the labor intensity of construction personnel, without to spandrel arch circle when improving production efficiency, and constructing The support of falsework equipment to be installed, has saved cost, construction safety is reliable, simple, meanwhile, the plain concrete and main arch of backfill Circle, spandrel arch are tightly combined, and are accordingly added main arch ring, spandrel arch thickness, are reached consolidation effect, improve construction project quality.
Description of the drawings
Fig. 1 is the schematic diagram in Bridge 1 of embodiment of the present invention face;
Fig. 2 is the sectional schematic diagram in Bridge 1 of embodiment of the present invention face;
Fig. 3 is the schematic diagram in Bridge 2 of embodiment of the present invention face.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment 1:
A kind of Deck Arch Bridges vault filler unloading and reinforced construction method, it comprises the following steps:
(1) bridge floor is divided into odd number working face, the width of each working face from deck centre to both sides according to the length direction of bridge It spends for the ㎜ of 1000 ㎜~3000;
(2) deck centre working face is excavated first, unloads deck paving and vault filler, carries out hogback cleaning, and seat slurry is repaired Main arch ring and spandrel arch disease;
(3) and then formwork erection backfills excavation face with plain concrete;
(4) fill concrete conserves, and intensity is made to reach the ﹪ of 65 ﹪ of design strength~75;
(5) excavate the working face of surface both sides successively again, construct by surface work progress and requirement, directly It is finished to all working surface construction.
The present invention step (1) in, the working face of surface both sides is of same size.
During to make excavation, the lateral stressed variation equilibrium of small and former bridge is influenced on the variation of former bridge original structure longitudinal stress, this Invention step (5) in, the working face for excavating surface both sides successively is separated by one to excavate first with surface The working face of a working face.
To ensure the globality of priority casting concrete, there is not construction joint, the element of working face backfill of the present invention mixes Joint face between solidifying soil carries out wharf's pavement quality.
For ensure the globality of priority casting concrete and it is lateral stressed uniformly, the element of working face of the present invention backfill mixes Power transmission muscle is equipped between solidifying soil, is arranged by the ㎜ of 250 ㎜ of spacing~350, the ㎜ of a diameter of 10 ㎜ of the power transmission muscle~20, length is The ㎜ of 150 ㎜~250.
A kind of Deck Arch Bridges vault filler unloading as described above is with reinforced construction method in Deck Arch Bridges repairing and reinforcement In application.
Deck Arch Bridges of the present invention are masonry arch bridge or arch bridge with reinforced concrete slabs or double curvature arched bridge.
The present embodiment is masonry arch bridge, for a kind of open web type stone arch bridge, the long 48m of full-bridge, bridge floor overall with 8.0m, bridge floor clear span 7.0m, bridge clear span 35m, bridge floor is clay bound macadam.When to its repairing and reinforcement, as seen from Figure 1, Figure 2, by bridge floor according to The length direction of bridge divides 5 working faces, i.e. surface 1, the work of the second working face the 2, the 3rd from deck centre to both sides Face 3, the 4th working face 4 and the 5th working face 5, the wherein width of surface are 2.2m, and the second working face the 2, the 3rd works The width in face 3, the 4th working face 4 and the 5th working face 5 is 1.2 m.
During construction, first,(It can multiple spot)The deck paving in 1 region of macroscopic destruction surface and vault filler;Cleaning Hogback soil repairs arch ring and spandrel arch cavity and defect with cement mortar;Along excavation face simple to install mould, returned with C20 plain concretes Fill out excavated surface, at backfill 100 ㎜ height of face, power transmission muscle arranged by the ㎜ of 250 ㎜ of spacing~350, power transmission muscle it is a diameter of 14 ㎜, length are 150 ㎜;Fill concrete conserve, after intensity reaches 70 ﹪ of design strength, then, excavate the 3rd working face 3 or 5th working face 5 excavates simultaneously, then excavates the second working face 2 or the 4th working face 4 or excavate simultaneously, and work progress is the same as center The work progress of working face 1;After having excavated, form removal, the side plucking of fill concrete, fill concrete, completion full-bridge Changing for vault filler is filled out;Finally, concrete of bridge deck paving reinforcing bar is bound, and pours concrete of bridge deck paving, is conserved, is done bridge Anti-collision railing, full-bridge repairing and reinforcement finish.
The present invention changes the stringent unloading of tradition and loading procedure, can be in the case where former arch bridge major part structure is motionless Deck Arch Bridges are carried out with repairing and reinforcement, and uses mechanical equipment multiple spot multistage operation, alleviates the labor intensity of construction personnel, Without to the installation falsework equipment support of spandrel arch circle, having saved cost, construction safety can when improving production efficiency, and constructing It leans on, simply, meanwhile, plain concrete and main arch ring, the spandrel arch of backfill are tightly combined, and are accordingly added main arch ring, spandrel arch thickness, are reached To consolidation effect, construction project quality is improved.
Embodiment 2:
The present embodiment is double curvature arched bridge, and main bridge is 2 × 40m(Only)Constant section catenary double curvature arched bridge, rise 6.67m, The long 128m of full-bridge, bridge floor clear span 12m, 12 m of main arch ring width, main arch ring arch rib vault whole drawing crack, 60 ﹪ areas of main arch ring into Enter tensile region, infrastructure is bricklaying gravity pier, and bridge floor is clay bound macadam.From the figure 3, it may be seen that its repairing and reinforcement When, bridge floor is divided into 7 working faces, i.e. surface 1, the second working face from deck centre to both sides according to the length direction of bridge 2nd, the 3rd working face 3, the 4th working face 4, the 5th working face 5, the 6th working face 6 and the 7th working face 7, wherein surface 1 width is 3.0m, the second working face 2, the 3rd working face 3, the 4th working face 4, the 5th working face 5, the 6th working face 6 and the The width of seven working faces 7 is 1.5m.
During construction, first, then macroscopic destruction surface 1, excavates the 3rd working face 3 or the 5th working face 5 or same When excavate, then excavate the second working face 2 or the 4th working face 4 or excavate simultaneously, finally, excavate the 6th working face 6 or the 7th work Make face 7 or excavate simultaneously.
Remaining same embodiment 1.

Claims (3)

1. a kind of Deck Arch Bridges vault filler unloading and reinforced construction method, it is characterized in that it comprises the following steps:
(1) bridge floor is laterally divided into odd number working face, the width of each working face from deck centre to both sides according to the length direction of bridge It spends and is equal to bridge width for the sum of the ㎜ of 1000 ㎜~3000, width of each working face;
Step (1) in, the working face of surface both sides is of same size;
(2) deck centre working face is excavated first, unloads deck paving and vault filler, carries out hogback cleaning, and seat slurry repairs main arch Circle and spandrel arch disease;
(3) and then formwork erection backfills excavation face with plain concrete;
Joint face between the plain concrete of the working face backfill carries out wharf's pavement quality;
Power transmission muscle is equipped between the plain concrete of working face backfill, is arranged by the ㎜ of 250 ㎜ of spacing~350, the power transmission muscle The ㎜ of a diameter of 10 ㎜~20, length is the ㎜ of 150 ㎜~250;
(4) fill concrete conserves, and intensity is made to reach the ﹪ of 65 ﹪ of design strength~75;
(5) excavate the working face of surface both sides successively again, construct by surface work progress and requirement, until institute There is work surface construction to finish;
Step (5) in, the working face for excavating surface both sides successively is separated by one to excavate first with surface The working face of a working face.
2. a kind of Deck Arch Bridges vault filler unloading as described in claim 1 is with reinforced construction method in Deck Arch Bridges reparation Application in reinforcing.
3. Deck Arch Bridges vault filler unloading according to claim 2 is with reinforced construction method in Deck Arch Bridges reparation Application in reinforcing, it is characterized in that the Deck Arch Bridges are masonry arch bridge or arch bridge with reinforced concrete slabs or double curvature arched bridge.
CN201610385626.8A 2016-06-03 2016-06-03 Deck Arch Bridges vault filler unloads and reinforced construction method and application Active CN105970838B (en)

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Publication number Priority date Publication date Assignee Title
CN109306667B (en) * 2018-10-17 2020-12-01 中铁大桥局武汉桥梁特种技术有限公司 Construction method for removing filler on arch of double-arch bridge
CN110804959B (en) * 2019-11-26 2021-01-26 山西省交通规划勘察设计院有限公司 Beam-arch cooperative stone arch bridge reinforcing and load shedding method

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CN103184723A (en) * 2012-05-09 2013-07-03 金辉 Method for reinforcing arch bridge with EPS Expandable Polystyrene light concrete
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CN101881005A (en) * 2009-05-08 2010-11-10 王绍先 Method for reinforcing double arch bridge
CN103184723A (en) * 2012-05-09 2013-07-03 金辉 Method for reinforcing arch bridge with EPS Expandable Polystyrene light concrete
CN103774563A (en) * 2012-10-24 2014-05-07 陕西龙海工程建设有限公司 Rigid frame arch bridge strengthening method
CN103215899A (en) * 2013-05-08 2013-07-24 中铁第一勘察设计院集团有限公司 Reinforcement method for pre-stress continuous beam base plate cracks

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