CN104963292A - Construction method of reinforced concrete multi-span arch bridge or continuous box structure bridge - Google Patents
Construction method of reinforced concrete multi-span arch bridge or continuous box structure bridge Download PDFInfo
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- CN104963292A CN104963292A CN201510422795.XA CN201510422795A CN104963292A CN 104963292 A CN104963292 A CN 104963292A CN 201510422795 A CN201510422795 A CN 201510422795A CN 104963292 A CN104963292 A CN 104963292A
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- bridge
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- flexible cable
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- box structure
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Abstract
The invention discloses a construction method of a reinforced concrete multi-span arch bridge or a continuous box structure bridge. The method is implemented according to the following steps: step 1) constructing the lower part structure of the arch bridge, wherein the lower part structure comprises a foundation, a middle pier and a bridge abutment; step 2) fixing flexible cables to piers of the arch bridge, fixing ground anchors through the flexible cables, and fixing the ground anchors to a ground to balance the horizontal force borne by the pier; step 3) erecting arch supports on each span of the bridge; step 4) constructing the upper part structure of the arch bridge on the arch supports; and step 5) removing the flexible cables and the arch supports. The construction method is simple in technology, reliable in quality, low in construction cost and rapider in construction speed, and the safety risk is lowered.
Description
Technical field
The present invention relates to bridge construction field, particularly relate to a kind of steel concrete and connect construction method across arch bridge or continuous box structure bridge.
Background technology
Two across and multispan continuous print arch bridge, continuously box structure bridge construction in, often middle pier has suitable height, along with the increase that pier is high, pier shaft top is more weak along the ability of Y opposing horizontal thrust, and this just brings very large puzzlement to the construction of arch bridge main arch ring (no matter adopt arch trestle cast-in-place or prefabrication and lifting).
In the continuous box structure construction of continuous box structure bridge, usual employing " Hanging Basket " construction technology, though this technique is less demanding to the horizontal holding capacity of the Y of bridge pier shaft when constructing, but complex process, speed of application is slow, security risk is comparatively large, and the segmental length that " Hanging Basket " can construct at every turn is limited, thus the phenomenon causing continuous box-beam structure longitudinal prestressing rope more.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of steel concrete and connect construction method across arch bridge or continuous box structure bridge, this construction method technique is simple, reliable in quality, and construction cost is low, and speed of application is very fast, reduces security risk.
Technical scheme of the present invention is as follows:
Steel concrete connects the construction method across arch bridge or continuous box structure bridge, and the method is carried out according to the following steps:
Step 1) construction bridge substructure, comprise basis, middle pier, abutment;
Step 2) one end of fixing flexible drag-line on pier in bridge, the other end of flexible cable is along bridge longitudinal extension and be fixed on earth anchor, earth anchorage on the ground, is installed and the horizontal force along bridge longitudinal direction that produces of working load for the arch trestle suffered by the company's of balance span centre pier;
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 steel concrete connect across arch bridge or continuously box structure bridge be two across time, the quantity of described middle pier is one, preferably, in this, pier is provided with along the two ends of arch bridge longitudinal direction the flexible cable oppositely extended, and the flexible cable oppositely extended by earth anchorage on the ground.
When described steel concrete connect across arch bridge or continuously box structure bridge be three across connect above across time, the quantity of described middle pier is at least two, preferably, be fixedly connected to form separately the pier group of middle pier series connection between two respectively by flexible cable between adjacent middle pier, pier group is provided with along the two ends of bridge longitudinal direction the flexible cable oppositely extended, and the flexible cable oppositely extended by earth anchorage on the ground.
In order to regulate the Suo Li of flexible cable, preferably, described flexible cable is provided with the tune rope device for regulating flexible cable Suo Li.
In order to the horizontal force in balance better suffered by pier, preferably, step 3) in, before setting up arch trestle, by Design of Construction Organization, utilize and adjust rope device to be strained by flexible cable.
In order to the horizontal force in balance better suffered by pier, preferably, described flexible cable is fixed on the below of the arch trestle absolute altitude of middle pier.
For the ease of being fixed to by flexible cable on middle pier, preferably, described middle pier is reserved with the fixing duct of flexible cable.
In order to balance the horizontal force suffered by the big-and-middle pier of width, further preferably, described middle pier is reserved with the fixing duct of multiple flexible cable, each fixing duct longitudinally penetrates along each middle pier and is positioned in same level, difference fixing flexible drag-line in each fixing duct.
In order to more easily arrange fixing duct on middle pier, further preferably, the method to set up in described fixing duct is: in construction in pier process, pre-buried body on middle pier, and the inner duct of the shaping rear body of middle pier is the fixing duct of flexible cable.
In order to improve the versatility of arch trestle, reduce construction cost, preferably, described arch trestle is standardization, unitized combined type arch trestle, this arch trestle across footpath, fabric width, radian is adjustable.
Owing to have employed technique scheme, the present invention has following actual effect:
The company of the present invention is directed to is across the feature of arch bridge or the continuously bridge superstructure construction of box structure bridge, in the construction period, can under the prerequisite not increasing the measure of pier shaft structure design, effective solution bears the problem of Y horizontal thrust at construction period pier shaft, below Zhong Dun top, standardization is set up in appropriate position, unitized combined type arch trestle, its span, fabric width, radian (ratio of rise to span) is adjustable, and then the brand-new construction technology that the integral support realizing above bridge type superstructure is entirely cast-in-place, after Superstructure Construction completes, flexible cable set by dismounting, arch trestle, if desired grouting Seal treatment is carried out to the reserving hole channel of flexible cable.
The inventive method, technique are simple, and construction cost is low, can effectively solve horizontal thrust because installation arch trestle and working load produce pier shaft in the construction period.And then the cast-in-place company of integral support can be adopted across arch bridge main arch ring, the continuous box girder connecting span continuous box structure, thus the construction sections of continuous box-beam structure can be lengthened, speed of application is accelerated, and greatly reduces the security risk of described bridge superstructure construction.
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 numeral
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 device, and 7 is earth anchor.
Detailed description of the invention
Embodiment 1
See Fig. 1, a kind of two connect the arch trestle construction method across arch bridge across steel concrete, and the method is carried out according to the following steps:
Step 1) across the substructure of arch bridge, comprise basis (not shown on figure), middle pier 2, abutment 3 by traditional handicraft cast-in-place company on ground 1;
Step 2) to connect in across arch bridge bridge pier 2 for mounting arch support 5 absolute altitude under one end of appropriate location fixing flexible drag-line 4, in order to ensure the intensity of flexible cable 4, described flexible cable 4 adopts high strength steel strand or high tensile steel wire rope.The other end of flexible cable 4 is fixed on left and right banks earth anchor 7 along bridge axis direction respectively, and earth anchor 7 is fixed on corresponding on interior ground 1, for the horizontal force along bridge axis direction that arch trestle 7 is installed and working load produces suffered by the company's of balance span centre pier 7; In the present embodiment, in described bridge, the quantity of pier 2 is one, and in this bridge, pier 2 is respectively equipped with along the two ends of arch bridge longitudinal direction the flexible cable 4 oppositely extended, and the flexible cable 4 oppositely extended is fixed on ground 1 by earth anchor 7.
For the ease of being fixed to by flexible cable 4 on middle pier 2, preferably, described middle pier 2 is reserved with the fixing duct of flexible cable 4.In the present embodiment, described middle pier 2 is reserved with the fixing duct of multiple flexible cable 4, middle pier longitudinally runs through along arch bridge and is positioned in same level by each fixing duct, is installed with flexible cable 4 respectively in each fixing duct.The method to set up in described fixing duct is: in construction bridge in pier 2 process, pre-buried body on Qiao Zhongdun 2, in bridge, the inner duct of the shaping rear body of pier 2 is the fixing duct of flexible cable 4.
For the ease of regulating flexible cable, the better horizontal thrust of pier 2 suffered by mounting arch support in balance bridge, described flexible cable 4 is provided with the tune rope device 6 for regulating flexible cable 4 Suo Li.Described tune rope device 6 can adopt the patent No. to be the tune rope device of ZL200820300288.4.Described flexible cable 4 adjusts rope device 6 through connecting after fixing duct, makes flexible cable 4 be positioned in bridge on pier 2.
Step 3) utilize and adjust rope device 6, flexible cable is regulated suitably fastening by Design of Construction Organization, the bearing of fixed arch support on middle pier, between Qiao Zhongdun 2 and two abutments 3, set up one group of arch trestle 5 respectively; Described arch trestle 5 is standardization, unitized combined type arch trestle 5, its across footpath, fabric width, radian (ratio of rise to span) is adjustable.Described combined type arch trestle 5 can adopt the patent No. to be the combined type steelframe of ZL200610051029.8.
Step 4) on arch trestle 5, implement the Superstructure Construction such as superstructure (main arch ring), bridge deck (on arch trestle in strict accordance with loading procedure load) of arch bridge.
Step 5) remove the Superstructure Construction that namely flexible cable 4, arch trestle 5 complete arch bridge.
Embodiment 2
See Fig. 2, for a kind of three across the arch trestle construction method of steel concrete company across arch bridge, the difference of the present embodiment and embodiment 1 is: in this method, in described bridge, the quantity of pier 2 is two, pier group is fixedly connected to form by flexible cable 4 between pier 2 in two, pier group is provided with along the two ends of arch bridge longitudinal direction the flexible cable 4 oppositely extended, and the flexible cable 4 oppositely extended 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 is identical with embodiment 1, repeats no more.
Embodiment 3
A kind of arch trestle construction method of continuous box structure bridge, the present embodiment is with the difference of embodiment 1, embodiment 2: step 3) hogging support installing need set up the conventional bracket conformed to continuous box structure vertical line type on arch trestle after completing, realize the construction of continuous box structure.
The present invention is not only confined to above-described embodiment, in the present embodiment, three also can pass through pier in flexible cable 4 fixed bridge by the method in embodiment 1 across above steel concrete across the construction method of arch bridge or continuous box structure bridge, thus realize the superstructure of bridge described in integral support cast-in-place construction.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (10)
1. steel concrete connects the construction method across arch bridge or continuous box structure bridge, it is characterized in that the method is carried out according to the following steps:
Step 1) construction bridge substructure, comprise basis, middle pier, abutment;
Step 2) one end of fixing flexible drag-line on pier in bridge, the other end of flexible cable is along bridge longitudinal extension and be fixed on earth anchor, earth anchorage on the ground, is installed and the horizontal force along bridge longitudinal direction that produces of working load for the arch trestle suffered by the company's of balance span centre pier;
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.
2. steel concrete according to claim 1 connects the construction method across arch bridge or continuous box structure bridge, it is characterized in that: the quantity of described middle pier is one, in this, pier is provided with along the two ends of arch bridge longitudinal direction the flexible cable oppositely extended, and the flexible cable oppositely extended by earth anchorage on the ground.
3. steel concrete according to claim 1 connects the construction method across arch bridge or continuous box structure bridge, it is characterized in that: the quantity of described middle pier is at least two, be fixedly connected to form separately the pier group of middle pier series connection between two respectively by flexible cable between adjacent middle pier, pier group is provided with along the two ends of bridge longitudinal direction the flexible cable oppositely extended, and the flexible cable oppositely extended by earth anchorage on the ground.
4. connecting the construction method across arch bridge or continuous box structure bridge according to the arbitrary described steel concrete of claims 1 to 3, it is characterized in that: described flexible cable is provided with the tune rope device for regulating flexible cable Suo Li.
5. steel concrete according to claim 4 connects the construction method across arch bridge or continuous box structure bridge, it is characterized in that: step 3) in, before setting up arch trestle, by Design of Construction Organization, utilize and adjust rope device to be strained by flexible cable.
6. connect the construction method across arch bridge or continuous box structure bridge according to the arbitrary described steel concrete of claims 1 to 3, it is characterized in that: described flexible cable is fixed on the below of the arch trestle absolute altitude of middle pier.
7. connect the construction method across arch bridge or continuous box structure bridge according to the arbitrary described steel concrete of claims 1 to 3, it is characterized in that: the fixing duct described middle pier being reserved with flexible cable.
8. steel concrete according to claim 7 connects the construction method across arch bridge or continuous box structure bridge, it is characterized in that: the fixing duct described middle pier being reserved with multiple flexible cable, each fixing duct longitudinally penetrates along each middle pier and is positioned in same level, difference fixing flexible drag-line in each fixing duct.
9. steel concrete according to claim 7 connects the construction method across arch bridge or continuous box structure bridge, it is characterized in that, the method to set up in described fixing duct is: in construction in pier process, pre-buried body on middle pier, and the inner duct of the shaping rear body of middle pier is the fixing duct of flexible cable.
10. steel concrete according to claim 1 connects the construction method across arch bridge or box structure bridge continuously, it is characterized in that: described arch trestle is standardization, unitized combined type arch trestle, this arch trestle across footpath, fabric width, radian is adjustable.
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| 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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| 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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| CN104963292B CN104963292B (en) | 2017-01-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905114A (en) * | 2017-12-07 | 2018-04-13 | 中交第三航务工程局有限公司 | A kind of construction method of large span Successive interference cancellation |
| CN111877127A (en) * | 2020-08-25 | 2020-11-03 | 中交路桥华南工程有限公司 | Construction method of continuous arch bridge |
| CN112726434A (en) * | 2020-12-28 | 2021-04-30 | 中铁广州工程局集团桥梁工程有限公司 | Method for dismantling three-span through-type reinforced concrete arch bridge |
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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 |
| CN101446067A (en) * | 2008-12-22 | 2009-06-03 | 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 |
| CN102493360A (en) * | 2011-12-29 | 2012-06-13 | 浙江大东吴集团建设有限公司 | Reinforced concrete arch bridge construction method |
| CN102995553A (en) * | 2012-11-27 | 2013-03-27 | 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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2015
- 2015-07-17 CN CN201510422795.XA patent/CN104963292B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101446067A (en) * | 2008-12-22 | 2009-06-03 | 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 |
| CN102493360A (en) * | 2011-12-29 | 2012-06-13 | 浙江大东吴集团建设有限公司 | Reinforced concrete arch bridge construction method |
| CN102995553A (en) * | 2012-11-27 | 2013-03-27 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905114A (en) * | 2017-12-07 | 2018-04-13 | 中交第三航务工程局有限公司 | A kind of construction method of large span Successive interference cancellation |
| CN111877127A (en) * | 2020-08-25 | 2020-11-03 | 中交路桥华南工程有限公司 | Construction method of continuous arch bridge |
| CN112726434A (en) * | 2020-12-28 | 2021-04-30 | 中铁广州工程局集团桥梁工程有限公司 | Method for dismantling three-span through-type reinforced concrete 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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