CN104963292B - Construction method of reinforced concrete continuous-span arch bridge or continuous box structure bridge - Google Patents
Construction method of reinforced concrete continuous-span arch bridge or continuous box structure bridge Download PDFInfo
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- CN104963292B CN104963292B CN201510422795.XA CN201510422795A CN104963292B CN 104963292 B CN104963292 B CN 104963292B CN 201510422795 A CN201510422795 A CN 201510422795A CN 104963292 B CN104963292 B CN 104963292B
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- bridge
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- flexible cable
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- 238000010276 construction Methods 0.000 title claims abstract description 55
- 239000011150 reinforced concrete Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000008520 organization Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001080929 Zeugopterus punctatus Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a construction method of a reinforced concrete continuous-span arch bridge or a continuous box structure bridge, which comprises the following steps: step 1) constructing a lower structure of an arch bridge, wherein the lower structure comprises a foundation, a middle pier and a bridge abutment; step 2) fixing a flexible inhaul cable on a bridge pier of the arch bridge, fixing a ground anchor by the flexible inhaul cable, and fixing the ground anchor on the ground for balancing horizontal force applied to the bridge pier; step 3) erecting an arch support on each span of the bridge; step 4) constructing an upper structure of the arch bridge on the arch center; and 5) dismantling the flexible inhaul cable and the arch support. The construction method has the advantages of simple process, reliable quality, low construction cost, high construction speed and safety risk reduction.
Description
Technical field
The present invention relates to bridge construction field, particularly relate to a kind of armored concrete even across arch bridge or continuous
The construction method of box structure bridge.
Background technology
Two across and multispan continuous print arch bridge, continuous box structure bridge construction in, often in pier have quite
Height, along with the increase that pier is high, the ability that horizontal thrust is resisted on pier shaft top longitudinally axially is the most weak,
This just brings the biggest to the construction (no matter using arch trestle cast-in-place or prefabrication and lifting) of arch bridge main arch ring
Puzzlement.
In the continuous box structure of continuous box structure bridge is constructed, generally use " Hanging Basket " construction technology, though
This technique is less demanding to the horizontal holding capacity of Y-direction of bridge pier shaft when construction, but complex process, execute
Work speed is slow, and security risk is relatively big, and the segmental length that " Hanging Basket " can construct every time is limited, thus causes even
The phenomenon that continuous box-beam structure longitudinal prestressing rope is more.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of armored concrete is even across arch
The construction method of bridge or continuously box structure bridge, this construction method technique is simple, reliable in quality, construction cost
Low, speed of application is very fast, reduces security risk.
Technical scheme is as follows:
A kind of armored concrete is even across arch bridge or the construction method of continuous box structure bridge, and the method presses following step
Suddenly carry out:
Step 1) construction bridge substructure, including pier basic, middle, abutment；
Step 2) one end of fixing flexible drag-line on the middle pier of bridge, the other end of flexible cable is along bridge longitudinally
Extending and be fixed on earth anchor, earth anchorage on the ground, props up for the arch suffered by the company's of balance span centre pier
Frame is installed and the produced horizontal force longitudinal along bridge of construction loads；
Step 3) set up arch trestle each of bridge across installation；
Step 4) superstructure of bridge of constructing on arch trestle；
Step 5) remove flexible cable, arch trestle.
When described armored concrete even across arch bridge or continuously box structure bridge be two across time, the quantity of described middle pier
It it is one, it is preferable that in this, pier is provided with oppositely extending flexible cable, reversely along the two ends that arch bridge is longitudinal
The flexible cable extended is by earth anchorage on the ground.
When described armored concrete even across arch bridge or continuously box structure bridge be three across connect above across time, described in
The quantity of pier is at least two, it is preferable that the most independent by flexible cable respectively between adjacent middle pier
Being fixedly connected to form the pier group of middle pier series connection, pier group is provided with oppositely extending flexibility along the two ends that bridge is longitudinal and draws
Rope, oppositely extending flexible cable is by earth anchorage on the ground.
In order to regulate the Suo Li of flexible cable, it is preferable that described flexible cable is provided with for regulating flexibility
The tune rope device of Cable power.
In order to horizontal force middle pier suffered by is better balanced, it is preferable that step 3) in, setting up arch
Before frame, by Design of Construction Organization, utilize and adjust rope device to be strained by flexible cable.
In order to horizontal force middle pier suffered by is better balanced, it is preferable that during described flexible cable is fixed on
The lower section of the arch trestle absolute altitude of pier.
For the ease of flexible cable being fixed on middle pier, it is preferable that be reserved with flexibility on described middle pier and draw
The fixing duct of rope.
In order to balance the horizontal force suffered by the big-and-middle pier of width, it is further preferred that reserved on described middle pier
Having the fixing duct of multiple flexible cable, each fixing duct longitudinally penetrates along each middle pier and is positioned at same level
On face, difference fixing flexible drag-line in each fixing duct.
In order to more easily arrange fixing duct on middle pier, it is further preferred that described fixing duct
Method to set up is: in construction during pier, pre-buried body on middle pier, the endoporus of body after middle pier molding
Road is the fixing duct of flexible cable.
In order to improve the versatility of arch trestle, reduce construction cost, it is preferable that described arch trestle is standard
Change, unitized combination type arch trestle, this arch trestle across footpath, fabric width, radian are adjustable.
Owing to have employed technique scheme, the present invention has a following actual effect:
The company of the present invention is directed to, across arch bridge or the feature of the bridge superstructure construction of box structure bridge continuously, is executing
Man-hour, section, effectively can solve at construction period pier shaft on the premise of not increasing pier shaft structure design measure
The problem bearing Y-direction horizontal thrust, below middle pier top portion, standardization, generalization are set up in appropriate position
Combination type arch trestle, its span, fabric width, radian (ratio of rise to span) is adjustable, and then realizes above bridge type
The brand-new construction technology that the integral support of superstructure is the most cast-in-place, after Superstructure Construction completes, removes
Set flexible cable, arch trestle；Reserving hole channel to flexible cable carries out grouting envelope if desired
Close process.
The inventive method, technique are simple, and construction cost is low, effectively can solve owing to installing in the construction period
Construction arch trestle and construction loads are to horizontal thrust produced by pier shaft.And then integral support can be used existing
The company of watering is across the continuous box girder of arch bridge main arch ring, even span continuous box structure, thus can lengthen continuous box-beam structure
Construction sections, speed of application accelerate, greatly reduce described bridge superstructure construction security risk.
Accompanying drawing explanation
The structural representation of Fig. 1 embodiment of the present invention 1；
Fig. 2 is the structural representation of inventive embodiments 2.
Reference
1 is ground, and 2 is middle pier, and 3 is abutment, and 4 is flexible cable, and 5 is arch trestle, and 6 for adjusting rope dress
Putting, 7 is earth anchor.
Detailed description of the invention
Embodiment 1
See Fig. 1, a kind of two across armored concrete even across the arch trestle construction method of arch bridge, the method by with
Lower step is carried out:
Step 1) by traditional handicraft, on ground 1, cast-in-place company is across substructure of arch bridge, including basis (figure
Upper the most not shown), middle pier 2, abutment 3；
Step 2) it is intended to appropriate location fixing flexible under mounting arch support 5 absolute altitude in company across the middle pier 2 of arch bridge bridge
One end of drag-line 4, in order to ensure the intensity of flexible cable 4, described flexible cable 4 uses high strength steel ream
Line or high-strength steel cord.The other end of flexible cable 4 is fixed on left and right banks earth anchor 7 along bridge axis direction respectively
On, earth anchor 7 is fixed on corresponding on interior ground 1, for the arch trestle 7 suffered by the company's of balance span centre pier 7
Install and the produced horizontal force along bridge axis direction of construction loads；In the present embodiment, pier 2 in described bridge
Quantity be one, in this bridge pier 2 along arch bridge longitudinal be respectively arranged at two ends with oppositely extending flexible cable 4,
Oppositely extending flexible cable 4 is fixed on ground 1 by earth anchor 7.
For the ease of flexible cable 4 being fixed on middle pier 2, it is preferable that be reserved with on described middle pier 2
The fixing duct of flexible cable 4.In the present embodiment, described middle pier 2 is reserved with multiple flexible cable 4
Fixing duct, each fixing duct by middle pier along arch bridge longitudinally through and be positioned in same level, each solid
Flexible cable 4 it is installed with respectively in determining duct.The method to set up in described fixing duct is: pier 2 mistake in construction bridge
Cheng Zhong, pre-buried body on Qiao Zhongdun 2, in bridge, after pier 2 molding, the inner duct of body is flexible cable 4
Fixing duct.
For the ease of regulation flexible cable, pier 2 is better balanced in bridge at the water suffered by mounting arch support
Horizontal sliding power, described flexible cable 4 is provided with the tune rope device 6 for regulating flexible cable 4 Suo Li.Described
Adjust rope device 6 can use the tune rope device of Patent No. ZL200820300288.4.Described flexible cable 4
Connect after fixing duct and adjust rope device 6, make flexible cable 4 be positioned in bridge on pier 2.
Step 3) utilize and adjust rope device 6, by Design of Construction Organization by flexible cable regulation fastening suitably,
The bearing of fixed arch support on middle pier, sets up one group of arch between Qiao Zhongdun 2 and two abutments 3 respectively
Frame 5；Described arch trestle 5 is standardization, unitized combination type arch trestle 5, its across footpath, fabric width, arc
Degree (ratio of rise to span) is adjustable.Described combination type arch trestle 5 can use Patent No. ZL200610051029.8
Combination type steelframe.
Step 4) on arch trestle 5, implement the top knots such as the superstructure (main arch ring) of arch bridge, bridge deck
Structure construction (loads in strict accordance with loading procedure on arch trestle).
Step 5) remove flexible cable 4, arch trestle 5 and i.e. complete the Superstructure Construction of arch bridge.
Embodiment 2
See Fig. 2, connect the arch trestle construction method across arch bridge, the present embodiment for a kind of three across armored concrete
Difference with embodiment 1 is: in this method, and in described bridge, the quantity of pier 2 is two, pier 2 in two
Between be fixedly connected to form pier group by flexible cable 4, pier group is provided with along the two ends that arch bridge is longitudinal reversely prolongs
The flexible cable 4 stretched, oppositely extending flexible cable 4 is fixed on ground 1 by earth anchor 7；Step 3)
In, between two middle piers 2, set up one group of arch trestle 5.The other technologies feature of the present embodiment and embodiment
1 is identical, repeats no more.
Embodiment 3
A kind of arch trestle construction method of continuous box structure bridge, the present embodiment and embodiment 1, embodiment 2
Difference is: step 3) in need to set up on arch trestle after arch trestle installation vertical with continuous box structure disconnected
The conventional bracket that upper thread type is consistent, it is achieved the construction of box structure continuously.
The present invention is not limited solely to above-described embodiment, and in the present embodiment, three across above armored concrete even
Construction method across arch bridge or continuous box structure bridge can also be by the method in embodiment 1 by flexible cable 4
Pier in fixed bridge, thus realize the superstructure of bridge described in integral support cast-in-place construction.
Finally illustrate, preferred embodiment above only in order to technical scheme to be described and unrestricted,
Although the present invention being described in detail by above preferred embodiment, but people in the art
Member should be appreciated that and in the form and details it can be made various change, without departing from this
Invention claims limited range.
Claims (9)
1. an armored concrete is even across arch bridge or the construction method of continuous box structure bridge, it is characterised in that should
Method sequentially includes the following steps:
Step 1) construction bridge substructure, including pier basic, middle, abutment；
Step 2) one end of fixing flexible drag-line on the middle pier of bridge, the other end of flexible cable is along bridge longitudinally
Extending and be fixed on earth anchor, earth anchorage on the ground, props up for the arch suffered by the company's of balance span centre pier
Frame is installed and the produced horizontal force longitudinal along bridge of construction loads, and described flexible cable is provided with for adjusting
The tune rope device of joint flexible cable Suo Li；
Step 3) set up arch trestle each of bridge across installation；
Step 4) superstructure of bridge of constructing on arch trestle；
Step 5) remove flexible cable, arch trestle.
Armored concrete the most according to claim 1 is even across arch bridge or the construction party of continuous box structure bridge
Method, it is characterised in that: the quantity of described middle pier is one, and in this, pier is provided with instead along the two ends that arch bridge is longitudinal
To the flexible cable extended, oppositely extending flexible cable is by earth anchorage on the ground.
Armored concrete the most according to claim 1 is even across arch bridge or the construction party of continuous box structure bridge
Method, it is characterised in that: the quantity of described middle pier is at least two, respectively by soft between adjacent middle pier
Property drag-line be the most individually fixedly connected to form the pier group of middle pier series connection, pier group is provided with instead along the two ends that bridge is longitudinal
To the flexible cable extended, oppositely extending flexible cable is by earth anchorage on the ground.
Armored concrete the most according to claim 1 is even across arch bridge or the construction party of continuous box structure bridge
Method, it is characterised in that: step 3) in, before setting up arch trestle, by Design of Construction Organization, utilize and adjust
Flexible cable is strained by rope device.
5. according to the arbitrary described armored concrete of claims 1 to 3 even across arch bridge or continuous box structure bridge
Construction method, it is characterised in that: described flexible cable is fixed on the lower section of the arch trestle absolute altitude of middle pier.
6. according to the arbitrary described armored concrete of claims 1 to 3 even across arch bridge or continuous box structure bridge
Construction method, it is characterised in that: be reserved with the fixing duct of flexible cable on described middle pier.
Armored concrete the most according to claim 6 is even across arch bridge or the construction party of continuous box structure bridge
Method, it is characterised in that: it is reserved with the fixing duct of multiple flexible cable, each fixing duct on described middle pier
Longitudinally penetrate along each middle pier and be positioned in same level, difference fixing flexible drag-line in each fixing duct.
Armored concrete the most according to claim 6 is even across arch bridge or the construction party of continuous box structure bridge
Method, it is characterised in that the method to set up in described fixing duct is: in construction during pier, on middle pier
Pre-buried body, after middle pier molding, the inner duct of body is the fixing duct of flexible cable.
Armored concrete the most according to claim 1 is even across arch bridge or the construction party of continuous box structure bridge
Method, it is characterised in that: described arch trestle is standardization, unitized combination type arch trestle, this arch trestle
Across footpath, fabric width, radian are adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422795.XA CN104963292B (en) | 2015-07-17 | 2015-07-17 | Construction method of reinforced concrete continuous-span arch bridge or continuous box structure bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422795.XA CN104963292B (en) | 2015-07-17 | 2015-07-17 | Construction method of reinforced concrete continuous-span arch bridge or continuous box structure bridge |
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| CN104963292A CN104963292A (en) | 2015-10-07 |
| CN104963292B true CN104963292B (en) | 2017-01-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107905114B (en) * | 2017-12-07 | 2019-04-02 | 中交第三航务工程局有限公司 | A kind of construction method of large span Successive interference cancellation |
| CN111877127B (en) * | 2020-08-25 | 2022-08-30 | 中交路桥华南工程有限公司 | Construction method of continuous arch bridge |
| CN112726434B (en) * | 2020-12-28 | 2022-05-10 | 中铁广州工程局集团桥梁工程有限公司 | Three-span deck reinforced concrete arch bridge dismantling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002201609A (en) * | 2000-12-28 | 2002-07-19 | Ps Corp | Construction method for concrete arch bridge |
| JP2008196135A (en) * | 2007-02-08 | 2008-08-28 | Akio Kitayama | Reinforcing structure of bridge |
| CN101446067B (en) * | 2008-12-22 | 2010-10-06 | 中铁大桥局集团第五工程有限公司 | Construction method for Y-shaped frame of large-span steel box basket arch bridge |
| CN102493360B (en) * | 2011-12-29 | 2013-09-04 | 浙江大东吴集团建设有限公司 | Reinforced concrete arch bridge construction method |
| CN102995553B (en) * | 2012-11-27 | 2014-08-27 | 胜利油田胜利工程建设（集团）有限责任公司 | Arch rib of reinforced concrete arch bridge and erection support and manufacture method of arch rib |
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