CN104711933A - Reinforced concrete arch bridge construction method combined with cast-in-place cantilever method and stiff skeleton method - Google Patents
Reinforced concrete arch bridge construction method combined with cast-in-place cantilever method and stiff skeleton method Download PDFInfo
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Abstract
The invention discloses a reinforced concrete arch bridge construction method combined with a cast-in-place cantilever method and a stiff skeleton method. The reinforced concrete arch bridge construction method is characterized by comprising the following steps that (1) the cast-in-place cantilever method is used for pouring arc ring sections in left-right symmetry and segmentation modes, the length of the arc ring sections formed by the cast-in-place cantilever method is 1/2-3/4 of the full length of an arch ring, the weight of each section is not larger than 200 tons, and after the previous section is hardened for 7-10 days, the next section begins to be poured; (2) the arc ring sections with the tops opened are formed in the step (1), stiff skeletons are erected at the openings, and the two ends of each stiff skeleton are connected with the adjacent left arc ring section and the right arc ring section respectively; (3) stiff skeleton section concrete is poured in a segmentation mode, the stiff skeletons are wrapped in the concrete, and accordingly the entire arch ring is formed. According to the construction method, a long-span arch bridge of 200-400m can be constructed, and the cost can be saved.
Description
Technical field
The present invention relates to the reinforced concrete arch bridge construction method of a kind of cantilever pouring and stiff skeleton combination.
Background technology
Reinforced concrete arch bridge construction method mainly contains rack construction method, erection with cableway, cast-in-place cantilever method, construction by swing, stiff skeleton method.
Cast-in-place cantilever method utilizes abut pier or builds the temporary support of Temporary Piers as suspension cable, the arch ring sections utilizing interim suspension cable to fasten to have built, and adopts movable hanging basket to the symmetrical cantilever pouring concrete of arch ring from arch springing, until vault closure.Stiff skeleton method is segmentation concreting on the purlin formula arch skeleton formed in advance, finally forms reinforced concrete arch.
Shortcoming: (1) rack construction method long construction period is current under bridge cut-off during construction period needs; (2) cast-in-place cantilever method is due to the reason such as suspension cable pulling force is limited, limit arch bridge across footpath; (3) stiff skeleton method complicated construction technique, construction cost is high, is difficult to control to concrete pouring quality; (4) the reinforced concrete arch bridge largest span of the method such as cantilever pouring construction is about 200m, the arch bridge of stiff skeleton method construction is adopted to be generally about 400m across footpath, for the arch bridge in the span footpath of 200m-400m, cast-in-place cantilever method is difficult to realize, and stiff skeleton method cost is too high.
Summary of the invention
In view of this, the object of this invention is to provide the reinforced concrete arch bridge construction method of a kind of cantilever pouring and stiff skeleton combination, can complete the construction of 200-400m across footpath arch bridge, again can be cost-saving.
The reinforced concrete arch bridge construction method that described cantilever pouring and stiff skeleton combine, comprises the following steps:
(1) adopt that cast-in-place cantilever method is symmetrical, segmented builds arch ring section, the arch ring segment length that cantilever pouring is formed is the 1/2-3/4 of arch ring total length, and every sections weight is no more than 200 tons, starts to build next sections after 7-10 days until previous sections sclerosis;
(2) after step (1), form open-topped arch ring section, set up stiff skeleton at opening part, the two ends of stiff skeleton are connected with the arch ring section of left and right respectively;
(3) build the concrete of stiff skeleton section for segmented section, stiff skeleton is wrapped in concrete, to which form complete arch ring.
Further, in described step (1), the length of the left arch ring section that cantilever pouring is formed and right arch ring section is 1/4 of arch ring total length.
Further, in described step (1), start to build next sections after previous sections hardens 8 days.
Beneficial effect of the present invention:
The reinforced concrete arch bridge construction method that cantilever pouring of the present invention and stiff skeleton combine, it is characterized in that, comprise the following steps: (1) adopts that cast-in-place cantilever method is symmetrical, segmented builds arch ring section, the arch ring segment length that cantilever pouring is formed is the 1/2-3/4 of arch ring total length, every sections weight is no more than 200 tons, starts to build next sections after 7-10 days until previous sections sclerosis; (2) after step (1), form open-topped arch ring section, set up stiff skeleton at opening part, the two ends of stiff skeleton are connected with the arch ring section of left and right respectively; (3) build the concrete of stiff skeleton section for segmented section, stiff skeleton is wrapped in concrete, to which form complete arch ring.This construction method, can complete the construction of 200-400m across footpath arch bridge, again can be cost-saving.
Accompanying drawing explanation
Fig. 1 is the structural representation of open-topped arch ring section;
Fig. 2 is the structural representation of the arch ring that this implementation method obtains.
The wherein 1 left arch ring section formed for cast-in-place cantilever method, the 2 right arch ring sections formed for cast-in-place cantilever method, 3 is stiff skeleton.
Detailed description of the invention
Better the present invention is described below in conjunction with embodiment.
Embodiment
The reinforced concrete arch bridge construction method that this cantilever pouring and stiff skeleton combine, comprises the following steps:
(1) adopt that cast-in-place cantilever method is symmetrical, segmented builds arch ring section, the arch ring segment length that cantilever pouring is formed is the 1/2-3/4 of arch ring total length, and every sections weight is no more than 200 tons, starts to build next sections after 7-10 days until previous sections sclerosis; In this embodiment, the length of the left arch ring section that cantilever pouring is formed and right arch ring section is 1/4 of arch ring total length, starts to build next sections after previous sections hardens 8 days;
(2) as shown in Figure 1, form open-topped arch ring section, set up stiff skeleton at opening part after step (1), the two ends of stiff skeleton are connected with the arch ring section of left and right respectively;
(3) build the concrete of stiff skeleton section for segmented section, be wrapped in by stiff skeleton in concrete, every sections concrete is no more than 200 tons, to which form complete arch ring as shown in Figure 2.
This construction method, can complete the construction of 200-400m across footpath arch bridge, again can be cost-saving.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. a reinforced concrete arch bridge construction method for cantilever pouring and stiff skeleton combination, is characterized in that, comprise the following steps:
(1) adopt that cast-in-place cantilever method is symmetrical, segmented builds arch ring section, the arch ring segment length that cantilever pouring is formed is the 1/2-3/4 of arch ring total length, and every sections weight is no more than 200 tons, starts to build next sections after 7-10 days until previous sections sclerosis;
(2) after step (1), form open-topped arch ring section, set up stiff skeleton at opening part, the two ends of stiff skeleton are connected with the arch ring section of left and right respectively;
(3) build the concrete of stiff skeleton section for segmented section, stiff skeleton is wrapped in concrete, to which form complete arch ring.
2. construction method according to claim 1, is characterized in that, in described step (1), the length of the left arch ring section that cantilever pouring is formed and right arch ring section is 1/4 of arch ring total length.
3. construction method according to claim 1, is characterized in that, in described step (1), starts to build next sections after previous sections hardens 8 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510135527.XA CN104711933A (en) | 2015-03-26 | 2015-03-26 | Reinforced concrete arch bridge construction method combined with cast-in-place cantilever method and stiff skeleton method |
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| CN201510135527.XA CN104711933A (en) | 2015-03-26 | 2015-03-26 | Reinforced concrete arch bridge construction method combined with cast-in-place cantilever method and stiff skeleton method |
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Cited By (6)
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|---|---|---|---|---|
| CN105178200A (en) * | 2015-08-27 | 2015-12-23 | 中交一公局第四工程有限公司 | Construction method of cable-stayed combined support for construction of first segment of suspended-pouring arch bridge |
| CN106702911A (en) * | 2017-01-25 | 2017-05-24 | 中铁大桥局集团有限公司 | Secondary transversal hoisting construction system and method for X-arch bridge arch rib segment |
| CN108589535A (en) * | 2018-04-09 | 2018-09-28 | 中交第二航务工程局有限公司 | A kind of reinforced concrete box girder construction method |
| 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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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178200A (en) * | 2015-08-27 | 2015-12-23 | 中交一公局第四工程有限公司 | Construction method of cable-stayed combined support for construction of first segment of suspended-pouring arch bridge |
| CN106702911A (en) * | 2017-01-25 | 2017-05-24 | 中铁大桥局集团有限公司 | Secondary transversal hoisting construction system and method for X-arch bridge arch rib segment |
| CN106702911B (en) * | 2017-01-25 | 2019-04-26 | 中铁大桥局集团有限公司 | A kind of secondary traversing construction method for hanging of cable-carried arch bridge rib-lifting section |
| CN108589535A (en) * | 2018-04-09 | 2018-09-28 | 中交第二航务工程局有限公司 | A kind of reinforced concrete box girder construction method |
| CN108589535B (en) * | 2018-04-09 | 2020-07-03 | 中交第二航务工程局有限公司 | Reinforced concrete box type arch bridge construction method |
| 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 |
| CN111914458B (en) * | 2020-08-18 | 2022-06-17 | 重庆交通大学 | Method for controlling line 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 |
| CN115992490B (en) * | 2023-03-23 | 2023-06-06 | 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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