CN109898425A - A kind of construction method with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring - Google Patents
A kind of construction method with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring Download PDFInfo
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Abstract
The present invention relates to a kind of construction methods with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring, using the Inclined cable-stayed cantilever construction for including Hanging Basket, comprising the following steps: first stage, the construction of arch ring stiff skeleton；The first step, the cast-in-place segment of arch ring left and right ends No.1 and the pre-buried segmental construction of No.1 stiff skeleton；Second step, other stiff skeleton segmental constructions of arch ring left and right ends；Third step, the construction of closure segment stiff skeleton；Second stage, the construction of arch ring stiff skeleton reinforced concrete enveloped；The first step, the cast-in-place segmental construction in arch ring left and right ends two；Second step, other cast-in-place segmental constructions of arch ring left and right ends；Third step, the construction of arch ring external wrapping concrete closure segment.The present invention can realize arch ring stress distribution in advance, reduce drag-line axle power, effectively solve the problems, such as that arch ring overall stability under great cantilever state is poor, is increased by great cantilever disturbance sensitivity effects, arch ring root is easy to cause to crack.
Description
Technical field
The present invention relates to concrete arch-type bridge engineerings, and in particular to a kind of to use Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring
Construction method.
Background technique
Currently, the Long span cantilever pouring concrete arch-type bridge that China is completed has four, largest span is Yanbian, Sichuan Province
County Bambusa fish bridge, main arch clear span 200m.In terms of Long span cantilever pouring concrete arch-type bridge, China is from initial stage 21st century
Starting, achieves now compared with much progress and successfully.And arch bridge is poured to the great cantilever of across footpath up to 200m or more, face " small bore
Big carrying head tower height increases, and stability reduces problem.Especially in river valley air port, wind resisting stability is deteriorated；And by long cantilever
Disturbing sensibility increase influences, and arch ring root is easy to crack, and in head tower top final area drag-line, the horizontal sextant angle axle power that becomes smaller is super
Greatly, construction risk such as increases at the problems.
" a kind of external wrapping concrete Inclined cable-stayed and divide ring section combined method construction method " disclosed in CN103572703A,
By full-bridge be divided into while bottom plate, bottom web, epiplastron, while 6 ring of roof box, raising middle flask bottom plate and middle roof box, every half arch rib of ring points 3
A working face, 3 segments of each working face point, totally 9 pour segment, and every ring pours 3 segments every time, are divided into 3 times and pour
It completes；Before outsourcing concreting, knotted rope and tail rope are set in arch springing section, and stretching rope is carried out according to design requirement
Power.The invention can be effectively reduced traditional approach construction safety risk, convenient for high-grade concrete cooperation when stencil design,
Easy to operate, saving cost, short time limit, and the linear and stress of arch ring can be effectively controlled.
CN104711933A discloses a kind of " reinforced concrete arch bridge construction party of cantilever pouring and stiff skeleton combination
Method ", comprising the following steps: (1) using cast-in-place cantilever method bilateral symmetry, it is segmented pour arch ring section, the arch that cantilever pouring is formed
The 1/2-3/4 that segment length is arch ring overall length is enclosed, every segment weight is no more than 200 tons, opens after previous segment is hardened 7-10 days
Beginning pours next segment；(2) open-topped arch ring section is formed after step (1), sets up stiff skeleton, stiffness in opening
The both ends of skeleton are connect with the arch ring section of left and right respectively；(3) the segmented section of concrete for pouring stiff skeleton section, by stiff skeleton
It is wrapped in concrete, so far forms complete arch ring.The construction method can be completed to apply 200-400m across footpath arch bridge
Work, and can save the cost.
Unquestionably, the above-mentioned prior art is all a kind of good try of technical field.
Goal of the invention
The object of the present invention is to provide a kind of construction methods with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring, can mention
Preceding realization arch ring stress distribution reduces drag-line axle power, and effectively solution arch ring overall stability under great cantilever state is poor, is hanged greatly
The problem of arm disturbance sensitivity effects increase, arch ring root are easy to cause to crack.
A kind of construction method with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring of the present invention, using including
The Inclined cable-stayed cantilever construction of Hanging Basket, comprising the following steps:
First stage, the construction of arch ring stiff skeleton；
The first step, the cast-in-place segment of arch ring left and right ends No.1 and the pre-buried segmental construction of No.1 stiff skeleton；
The cast-in-place segment of the first from left number is poured in the left end of arch ring, pre-buried the first from left stiff skeleton in the cast-in-place segment of described the first from left number,
Meanwhile the cast-in-place segment of right No.1 is poured in the right end of arch ring, the pre-buried right No.1 stiff skeleton in the right cast-in-place segment of No.1；
And the cast-in-place segment of described the first from left number and the first from left stiff skeleton and the cast-in-place segment of right No.1 and right No.1 stiff skeleton or so pair
Claim；
Second step, other stiff skeleton segmental constructions of arch ring left and right ends；
First in right end erecting and welding the second from left stiff skeleton of the first from left stiff skeleton, then, a successively erecting and welding left side three section by section
Number stiff skeleton, left No. four stiff skeletons, left No. five stiff skeletons and left No. six stiff skeletons, meanwhile, in right No.1 stiffness bone
Right No. two stiff skeletons of the left end erecting and welding of frame；Then, successively right No. three stiff skeletons of erecting and welding, right No. four stiffnesses section by section
Skeleton, right No. five stiff skeletons and right No. six stiff skeletons；
Third step, the construction of closure segment stiff skeleton；
The erecting and welding closure segment stiff skeleton between left No. six stiff skeletons and right No. six stiff skeletons, completes arch ring strength
Property skeleton construction；
Second stage, the construction of arch ring stiff skeleton reinforced concrete enveloped；
The first step, the cast-in-place segmental construction in arch ring left and right ends two；
After the completion of the hanging cable tensioning of the first from left segment, the Hanging Basket of Inclined cable-stayed cantilever is moved to the second from left stiffness of arch ring left end
At skeleton, installation template and casting concrete, after the cast-in-place segment concrete of the second from left reach design hanging cable tensioning intensity after hanging cable tensioning, it is complete
At the construction of the cast-in-place segment of the second from left number of arch ring left end；After the completion of right No.1 segment hanging cable tensioning, by other side Inclined cable-stayed
The Hanging Basket of cantilever is moved at the stiff skeleton of the right side two of arch ring right end, installation template and casting concrete, to right two cast-in-place sections
Section concrete reaches hanging cable tensioning after design hanging cable tensioning intensity, completes the construction of No. two cast-in-place segments in the right side of arch ring right end；
Second step, other cast-in-place segmental constructions of arch ring left and right ends；
The working procedure for repeating the cast-in-place segment of the second from left number successively carries out left No. three cast-in-place segments, left No. four cast-in-place segments, a left sides section by section
The construction of No. five cast-in-place segments and left No. six cast-in-place segments；
Meanwhile the working procedure for repeating right No. two cast-in-place segments successively carries out right No. three cast-in-place segments, right No. four cast-in-place sections section by section
The construction of section, right No. five cast-in-place segments and right No. six cast-in-place segments；
Third step, the construction of arch ring external wrapping concrete closure segment；
The Hanging Basket of Inclined cable-stayed cantilever is moved at closure segment stiff skeleton, installation template and casting concrete, completes arch ring
The external wrapping concrete construction of closure segment
Further, the external wrapping concrete construction of the arch ring closure segment, it is desirable that completed when one day temperature is minimum.
Beneficial effects of the present invention:
Since arch ring is divided into the construction of arch ring stiff skeleton and arch ring stiff skeleton reinforced concrete enveloped construction two by the present invention
Stage carries out, and solves that overall stability under arch ring great cantilever state is poor, is increased and easy by great cantilever disturbance sensitivity effects
The problem for causing arch ring root easy to crack.The speed that arch ring closes up not only is accelerated, but also greatlys save cost.To entire arch ring
Safety plays the role of immeasurable.514.5 ten thousand yuan are saved compared with conventional cantilever casting method；Closure time shortens 25 days.
The present invention closes up main arch ring using steel truss in advance, achievees the purpose that stress distributes in advance, reduces drag-line axle power, increases
Add arch ring overall stability, root is avoided to crack.
Detailed description of the invention
Fig. 1 is the schematic diagram of present invention the first from left stiff skeleton pre-buried in the cast-in-place segment of the first from left number；
Fig. 2 is the schematic diagram of the present invention right No.1 stiff skeleton pre-buried in the cast-in-place segment of right No.1；
Fig. 3 is schematic diagram of the present invention in the first from left stiff skeleton right end erecting and welding the second from left stiff skeleton；
Fig. 4 is schematic diagram of the present invention in right No. two stiff skeletons of right No.1 stiff skeleton left end erecting and welding；
Fig. 5 is the schematic diagram for the arch ring stiff skeleton that the present invention completes；
Fig. 6 is the schematic diagram that the present invention completes the cast-in-place segment of the second from left number；
Fig. 7 is the schematic diagram that the present invention completes right No. two cast-in-place segments；
Fig. 8 is the schematic diagram that the present invention completes arch ring external wrapping concrete；
Fig. 9 is schematic diagram of the present invention using the Inclined cable-stayed cantilever construction for including Hanging Basket；
Figure 10 is the structural schematic diagram of Hanging Basket.
In figure:
11-Inclined cable-stayed cantilevers；
21-Hanging Baskets；
The cast-in-place segment of the first from left No. 31-, the cast-in-place segment of the second from left No. 32-, 33-left No. three cast-in-place segments, 34-left No. four cast-in-place sections
Section, 35-left No. five cast-in-place segments, 36-left No. six cast-in-place segments；
41-the first from left stiff skeletons, 42-the second from left stiff skeletons, 43-left No. three stiff skeletons, 44-left No. four stiffness bones
Frame, 45-left No. five stiff skeletons, 46-left No. six stiff skeletons；
51-right cast-in-place the segments of No.1,52-right No. two cast-in-place segments, 53-right No. three cast-in-place segments, 54-right No. four cast-in-place sections
Section, 55-right No. five cast-in-place segments, 56-right No. six cast-in-place segments；
61-right No.1 stiff skeletons, 62-right No. two stiff skeletons, 63-right No. three stiff skeletons, 64-right No. four stiffness bones
Frame, 65-right No. five stiff skeletons, 66-right No. six stiff skeletons；
71-closure segment stiff skeletons；
81-arch ring closure segments.
Arabic numerals 1-26 in figure is the node of stiff skeleton.
Specific embodiment
The present invention is explained in detail with reference to the accompanying drawing.
Referring to Fig. 1 to Figure 10, a kind of construction method with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring, using packet
The Inclined cable-stayed cantilever 11 for including Hanging Basket 21 is constructed, comprising the following steps:
First stage, the construction of arch ring stiff skeleton；
The first step, the cast-in-place segment of arch ring left and right ends No.1 and the pre-buried segmental construction of No.1 stiff skeleton；
The cast-in-place segment 31 of the first from left number is poured in the left end of arch ring, pre-buried the first from left stiffness bone in the cast-in-place segment 31 of described the first from left number
Frame 41, meanwhile, the cast-in-place segment 51 of right No.1 is poured in the right end of arch ring, the pre-buried right No.1 in the right cast-in-place segment 51 of No.1
Stiff skeleton 61；And the cast-in-place segment 31 of described the first from left number and the first from left stiff skeleton 41 and the cast-in-place segment 51 of right No.1 and the right side one
61 bilateral symmetry of number stiff skeleton；
Second step, other stiff skeleton segmental constructions of arch ring left and right ends；
First in right end erecting and welding the second from left stiff skeleton 42 of the first from left stiff skeleton 41, then, successively erecting and welding section by section
Left No. three stiff skeletons 43, left No. four stiff skeletons 44, left No. five stiff skeletons 45 and left No. six stiff skeletons 46；Meanwhile
Right No. two stiff skeletons 62 of the left end erecting and welding of right No.1 stiff skeleton 61；Then, successively right No. three strength of erecting and welding section by section
Property skeleton 63, right No. four stiff skeletons 64, right No. five stiff skeletons 65 and right No. six stiff skeletons 66；
Third step, the construction of closure segment stiff skeleton；
The erecting and welding closure segment stiff skeleton 71 between left No. six stiff skeletons 46 and right No. six stiff skeletons 66, is completed
The construction of arch ring stiff skeleton；
Second stage, the construction of arch ring stiff skeleton reinforced concrete enveloped；
The first step, the cast-in-place segmental construction in arch ring left and right ends two；
After the completion of the 31 hanging cable tensioning of the first from left segment, the Hanging Basket of Inclined cable-stayed cantilever is moved to the second from left strength of arch ring left end
Property skeleton 42 at, installation template and casting concrete, the hanging cable after the cast-in-place segment concrete of the second from left reaches design hanging cable tensioning intensity
It draws, completes the construction of the cast-in-place segment 32 of the second from left number of arch ring left end；After the completion of right 51 segment hanging cable tensioning of No.1, by the other side
The Hanging Basket 21 of Inclined cable-stayed cantilever 11 is moved at the stiff skeleton 62 of the right side two of arch ring right end, installation template and pours coagulation
Soil, hanging cable tensioning after two cast-in-place 52 concretes of segment reach design hanging cable tensioning intensity after the right side, the right side two for completing arch ring right end are cast-in-place
The construction of segment 52；
Second step, other cast-in-place segmental constructions of arch ring left and right ends；
The working procedure for repeating the cast-in-place segment of the second from left number successively carries out left No. three cast-in-place segments 33, left No. four cast-in-place segments section by section
34, the construction of left No. five cast-in-place segments 35 and left No. six cast-in-place segments 36；
Meanwhile successively the right No. three cast-in-place segments 53 of progress, the right side four are cast-in-place section by section for the working procedure of the right No. two cast-in-place segments of repetition
The construction of segment 54, right No. five cast-in-place segments 55 and right No. six cast-in-place segments 56；
Third step, the construction of arch ring external wrapping concrete closure segment；Installation template and casting concrete complete the outer of arch ring closure segment 81
Packet concrete construction.
The external wrapping concrete construction requirement of arch ring closure segment 81 is completed when one day temperature is minimum.
Since great cantilever pours arch ring after cantilever construction to 90m long, drag-line horizontal sextant angle will be faced and become smaller, drag-line axis
Power super large and by great cantilever disturbance sensitivity effects increase, easily lead to arch ring root problem easy to crack.Using this construction party
Method solves that overall stability under arch ring great cantilever state is poor, is increased by great cantilever disturbance sensitivity effects, and easily leads to arch
Enclose root problem easy to crack.
Claims (2)
1. a kind of construction method with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring, using the oblique pull for including Hanging Basket (21)
Detain hanging arm (11) construction, characterized in that the following steps are included:
First stage, the construction of arch ring stiff skeleton；
The first step, the cast-in-place segment of arch ring left and right ends No.1 and the pre-buried segmental construction of No.1 stiff skeleton；
The cast-in-place segment of the first from left number (31) is poured in the left end of arch ring, pre-buried the first from left strength in the cast-in-place segment of described the first from left number (31)
Property skeleton (41), meanwhile, the cast-in-place segment of right No.1 (51) is poured in the right end of arch ring, in the right cast-in-place segment of No.1 (51)
Pre-buried right No.1 stiff skeleton (61)；And the cast-in-place segment of the first from left number (31) and the first from left stiff skeleton (41) and right No.1
Cast-in-place segment (51) and right No.1 stiff skeleton (61) bilateral symmetry；
Second step, other stiff skeleton segmental constructions of arch ring left and right ends；
First then successively installed section by section in right end erecting and welding the second from left stiff skeleton (42) of the first from left stiff skeleton (41)
Weld left No. three stiff skeletons (43), left No. four stiff skeletons (44), left No. five stiff skeletons (45) and left No. six stiff skeletons
(46), meanwhile, in right No. two stiff skeletons (62) of the left end erecting and welding of right No.1 stiff skeleton (61)；Then, successively section by section
No. three stiff skeletons (63) in the erecting and welding right side, right No. four stiff skeletons (64), right No. five stiff skeletons (65) and right No. six stiffnesses
Skeleton (66)；
Third step, the construction of closure segment stiff skeleton；
The erecting and welding closure segment stiff skeleton between left No. six stiff skeletons (46) and right No. six stiff skeletons (66)
(71), the construction of arch ring stiff skeleton is completed；
Second stage, the construction of arch ring stiff skeleton reinforced concrete enveloped；
The first step, the cast-in-place segmental construction in arch ring left and right ends two；
After the completion of pre-buried skeleton segment (31) hanging cable tensioning, the Hanging Basket (21) of Inclined cable-stayed cantilever (11) is moved to an arch ring left side
At the second from left stiff skeleton (42) at end, installation template and casting concrete reach design hanging cable to cast-in-place 32 concrete of segment of the second from left
The construction of the cast-in-place segment of the second from left number (32) of arch ring left end is completed in hanging cable tensioning after tensioning intensity；It is hung to right No.1 segment (51)
After the completion of cable stretching, the Hanging Basket (21) of the Inclined cable-stayed cantilever (11) of the other side is moved to the stiffness bone of the right side two of arch ring right end
At frame (62), installation template and casting concrete, hanging cable after two cast-in-place segment (52) concretes reach design hanging cable tensioning intensity after the right side
The construction of the cast-in-place segment (52) in the right side two of arch ring right end is completed in tensioning；
Second step, other cast-in-place segmental constructions of arch ring left and right ends；
Movable hanging basket (21) to the working procedure that left No. three cast-in-place segments (33) repeat the cast-in-place segment of the second from left number successively carries out section by section
Left No. three cast-in-place segments (33), left No. four cast-in-place segments (34), left No. five cast-in-place segments (35) and left No. six cast-in-place segments (36))
Construction；
Meanwhile the casting process of the right No. two cast-in-place segments of repetition successively carries out right No. three cast-in-place segments (53), the right side four now section by section
Pour the construction of segment (54), right No. five cast-in-place segments (55) and right No. six cast-in-place segments (56)；
Third step, the construction of arch ring external wrapping concrete closure segment；
The Hanging Basket (21) of Inclined cable-stayed cantilever (11) is moved at closure segment stiff skeleton (71), installation template and pours coagulation
Soil completes the external wrapping concrete construction of arch ring closure segment (81).
2. the construction method according to claim 1 with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring, it is characterized in that:
The external wrapping concrete of the arch ring closure segment (81) is constructed, it is desirable that is completed when one day temperature is minimum.
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| CN111914458A (en) * | 2020-08-18 | 2020-11-10 | 重庆交通大学 | Method for controlling linear shape of arch ring of reinforced concrete arch bridge |
| CN112560321A (en) * | 2020-12-29 | 2021-03-26 | 重庆交通大学 | Calculation method for ring-divided segmented pouring length of concrete wrapped outside arch ring of stiffened framework concrete arch bridge |
| CN115992490A (en) * | 2023-03-23 | 2023-04-21 | 中铁十七局集团第五工程有限公司 | Pouring construction method for cable-stayed buckling hanging cantilever of large-span concrete arch bridge |
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| CN115992490A (en) * | 2023-03-23 | 2023-04-21 | 中铁十七局集团第五工程有限公司 | Pouring construction method for cable-stayed buckling hanging cantilever of large-span concrete arch bridge |
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