CN103243652A - Large-span non-floor type cast-in-place beam falsework and construction method thereof - Google Patents
Large-span non-floor type cast-in-place beam falsework and construction method thereof Download PDFInfo
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- CN103243652A CN103243652A CN2013101636202A CN201310163620A CN103243652A CN 103243652 A CN103243652 A CN 103243652A CN 2013101636202 A CN2013101636202 A CN 2013101636202A CN 201310163620 A CN201310163620 A CN 201310163620A CN 103243652 A CN103243652 A CN 103243652A
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Abstract
The invention discloses a large-span non-floor type cast-in-place beam falsework and a construction method thereof. The large-span non-floor type cast-in-place beam falsework is characterized in that two side supports are symmetrically arranged on two side bearing platforms and piers used for bearing a cast-in-place beam, embedded bearing platform steel plates are arranged at the top of the concrete bearing platforms via foundation bolts, embedded pier steel plates are respectively arranged at different height on side portions of the concrete piers via foundation bolts, vertical steel tube columns and bracket side stays are respectively arranged on the embedded bearing platform steel plates, and vertical pier column connecting steel tubes are arranged at different height between the embedded pier steel plates and the vertical steel tube columns, and horizontal bracket supports are arranged between the vertical steel tube columns and the bracket side stays, sand cylinder disassembling top caps are respectively arranged at the top of the vertical steel tube columns and the bracket side stays, double-spliced H-shaped steel is arranged on the sand cylinder disassembling top caps, and Bailey beams are arranged on the double-spliced H-shaped steel. The large-span non-floor type cast-in-place beam falsework is used in construction of cast-in-place continuous beams and continuous steel structures, foundation treatment can be omitted, and construction cost and safety risks in construction are reduced.
Description
Technical field
The present invention relates to the technical field of cast-in-place falsework construction in the bridge engineering, be specifically related to a kind of cast-in-place falsework and job practices thereof.
Background technology
Along with the development of domestic highway, railway, beam types such as large span, big width bridge cast-in-situ continuous beam, cast-in-place continuous steel constructed beam are used more and more widely in engineering construction.At present, this type of bridge adopts full framing method or the construction of steel pipe falsework method usually.In special areas such as cross a river, soft bases, the full framing method obviously can not satisfy on-the-spot needs and ask.At this moment, the construction of steel pipe falsework method is comparatively general, and the intensity of fulcrum falsework of living in and stability are the keys that whole construction course and quality of main body project guarantee, therefore, it is the key of whole construction course that ground is handled.If cross over the river, then the slotting steel pipe clump of piles of beating is artificially made stressed fulcrum and is satisfied requirement for bearing capacity; If be located in the soft base district, then need ground is handled, processing method comprises grounds processing such as bored pile, high-pressure rotary jet grouting pile, steel pipe pile.No matter adopt any foundation treatment mode, all are very high parts of expense in the whole falsework system, the shortcomings such as increase, the wasting of resources of construction cost all can be arranged.
Summary of the invention
The objective of the invention is in order to solve in some special geological or construction environment, can not adopt full framing construction maybe must adopt ground handle back falsework method construct and bring long in time limit, construction cost is big, problems such as the wasting of resources, thereby reach the purpose that the ground processing was handled or do not carried out to the ground when as far as possible reducing the construction of falsework method, the cast-in-place beam falsework of the non-console mode of a kind of large span and job practices thereof are provided.
The present invention adopts following technical scheme to realize:
The design feature of the cast-in-place beam falsework of the non-console mode of large span of the present invention is: be symmetrical arranged two side stands at the both sides cushion cap and the pier shaft that are used for the cast-in-place beam of supporting, the form of structure of described two side stands is:
Top at concrete bearing platform arranges the cushion cap pre-embedded steel slab by stone bolt;
On the sidepiece differing heights position of concrete pier shaft, by stone bolt each pier shaft pre-embedded steel slab is set respectively;
On described cushion cap pre-embedded steel slab, prop up upright steel pipe post and bracket bearing diagonal respectively;
Between described each pier shaft pre-embedded steel slab and the steel pipe post the locational pier shaft column of differing heights is set respectively and is connected steel pipe;
Between described steel pipe post and bracket bearing diagonal, the bracket horizontal support is set;
Unloading sand tube top cap is set respectively at the top of described steel pipe post and bracket bearing diagonal, and cap arranges the Two bors d's oeuveres i iron on described unloading sand tube top, and Bei Leiliang is arranged on the Two bors d's oeuveres i iron.
The design feature of the cast-in-place beam falsework of the non-console mode of large span of the present invention also is:
Described bracket bearing diagonal and horizontal plane angle are not less than 45 o.
Between described steel pipe post and bracket bearing diagonal and described cushion cap pre-embedded steel slab, and to connect between steel pipe and the pier shaft pre-embedded steel slab at described pier shaft column be to be connected by flange.
The characteristics of the job practices of the cast-in-place beam falsework of the non-console mode of large span of the present invention are to carry out as follows:
A, concreting cushion cap and concrete pier shaft, and in described concrete bearing platform and concrete pier shaft, distinguish pre-buried cushion cap pre-embedded steel slab and pier shaft pre-embedded steel slab;
B, successively column steel pipe, bracket horizontal support, bracket bearing diagonal, unloading sand tube top cap, Two bors d's oeuveres i iron and Bei Leiliang be installed;
C, lay channel-section steel, lay the bamboo offset plate at channel-section steel at described Bei Leiliang, finish the construction of cast-in-place beam falsework.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, flexible, easy accessibility, greatly accelerating construction progress of the cast-in-place beam falsework of the non-console mode of large span of the present invention structure;
2, the employed material of the cast-in-place beam falsework of the non-console mode of large span of the present invention can reuse, and economizes on resources, and reduces construction cost;
3, the cast-in-place beam falsework of the non-console mode of large span of the present invention is used for cast-in-situ continuous beam and steel structure construction continuously, can not carry out ground and handle, and has reduced the security risk in construction cost and the construction;
4, the present invention is suitable for and is applied in some special geological or the construction environment, can not adopt the full framing construction maybe must adopt the place that could adopt the construction of falsework method after the ground processing, can effectively avoid the construction period long, and construction cost is big, problems such as the wasting of resources.
Description of drawings
Fig. 1 is facade structures schematic diagram of the present invention;
Number in the figure: 1 cushion cap; 2 pier shaft pre-embedded steel slabs; 3 cushion cap pre-embedded steel slabs; 4 cast-in-place beams; 5 pier shafts; 6 steel pipe posts; 7 pier shaft columns connect steel pipe; 8 bracket horizontal supports; 9 columns unloading sand tube top cap; 10 bracket bearing diagonals; 11 Two bors d's oeuveres i iron; 12 levels connect steel pipe; 13 Bei Leiliang; 14 channel-section steels; 15 bamboo offset plates.
The specific embodiment
Referring to Fig. 1, the form of structure of the cast-in-place beam falsework of the non-console mode of large span is in the present embodiment: be symmetrical arranged two side stands at the both sides cushion cap 1 and the pier shaft 5 that are used for the cast-in-place beam 4 of supporting, the form of structure of two side stands is: the top at concrete bearing platform 1 arranges cushion cap pre-embedded steel slab 3 by stone bolt; On the sidepiece differing heights position of concrete pier shaft 5, by stone bolt each pier shaft pre-embedded steel slab 2 is set respectively; On cushion cap pre-embedded steel slab 3, prop up upright steel pipe post 6 and bracket bearing diagonal 10 respectively; Between each pier shaft pre-embedded steel slab 2 and the steel pipe post 6 the locational pier shaft column of differing heights is set respectively and is connected steel pipe 7; Between steel pipe post 6 and bracket bearing diagonal 10, bracket horizontal support 8 is set; Unloading sand tube top cap 9 is set respectively at the top of steel pipe post 6 and bracket bearing diagonal 10, at unloading sand tube top cap 9 Two bors d's oeuveres i iron 11 is set, shellfish thunder beam 13 is arranged on the Two bors d's oeuveres i iron 11; Shellfish thunder beam 13 is arranged on the Two bors d's oeuveres i iron 11; Shellfish thunder beam 13 can adopt individual layer Bei Leiliang or double-deck Bei Leiliang; Routinely, channel-section steel 14 horizontal being layered on the shellfish thunder beam 13; Lay bamboo offset plate 15 at channel-section steel 14, finish the construction of cast-in-place beam 4 at bamboo offset plate 15.
In concrete the enforcement, bracket bearing diagonal 10 is not less than 45 o with horizontal plane angle; Between steel pipe post 6 and bracket bearing diagonal 10 and cushion cap pre-embedded steel slab 3, and to connect between steel pipe 7 and the pier shaft pre-embedded steel slab 2 at the pier shaft column be to be connected by flange.In order to gain in strength, can level connection steel pipe 12 be set above a pair of bracket bearing diagonal 10, between adjacent unloading sand tube top cap 9.
The characteristics of the job practices of the cast-in-place beam falsework of the non-console mode of large span are to carry out as follows in the present embodiment:
1, concreting cushion cap 1 and concrete pier shaft 5, and in concrete bearing platform 1 and concrete pier shaft 5, distinguish pre-buried cushion cap pre-embedded steel slab 3 and pier shaft pre-embedded steel slab 2;
2, column steel pipe 6, bracket horizontal support 8, bracket bearing diagonal 10, unloading sand tube top cap 9, Two bors d's oeuveres i iron 11 and Bei Lei beam 13 are installed successively;
3, lay channel-section steel 14, lay bamboo offset plate 15 at channel-section steel 14 at Bei Leiliang 13, finish the construction of cast-in-place beam falsework.
In order to ensure the concrete that does not damage on concrete bearing platform 1 and the concrete pier shaft 5, should make the position of cushion cap pre-embedded steel slab 3 and pier shaft pre-embedded steel slab 2 be not less than 50cm apart from the concrete edge; In order to guarantee the stability of whole falsework, after steel pipe post, bracket horizontal support and the construction of bracket bearing diagonal finish, should form the form of structure of bridging adopting channel-section steel to connect as connecting rod member each other.
Claims (4)
1. cast-in-place beam falsework of the non-console mode of large span is characterized in that: be symmetrical arranged two side stands at the both sides cushion cap (1) and the pier shaft (5) that are used for the cast-in-place beam of supporting (4), the form of structure of described two side stands is:
Top at concrete bearing platform (1) arranges cushion cap pre-embedded steel slab (3) by stone bolt;
On the sidepiece differing heights position of concrete pier shaft (5), by stone bolt each pier shaft pre-embedded steel slab (2) is set respectively;
On described cushion cap pre-embedded steel slab (3), prop up upright steel pipe post (6) and bracket bearing diagonal (10) respectively;
Between described each pier shaft pre-embedded steel slab (2) and the steel pipe post (6) the locational pier shaft column of differing heights is set respectively and is connected steel pipe (7);
Between described steel pipe post (6) and bracket bearing diagonal (10), bracket horizontal support (8) is set;
Unloading sand tube top cap (9) is set respectively at the top of described steel pipe post (6) and bracket bearing diagonal (10), at described unloading sand tube top cap (9) Two bors d's oeuveres i iron (11) is set, Bei Leiliang (13) is arranged on the Two bors d's oeuveres i iron (11).
2. the cast-in-place beam falsework of the non-console mode of large span according to claim 1 is characterized in that: described bracket bearing diagonal (10) is not less than 45 o with horizontal plane angle.
3. the cast-in-place beam falsework of the non-console mode of large span according to claim 1, it is characterized in that: between described steel pipe post (6) and bracket bearing diagonal (10) and described cushion cap pre-embedded steel slab (3), and to connect between steel pipe (7) and the pier shaft pre-embedded steel slab (2) at described pier shaft column be to be connected by flange.
4. the job practices of the cast-in-place beam falsework of the non-console mode of the described large span of claim 1 is characterized in that carrying out as follows:
A, concreting cushion cap (1) and concrete pier shaft (5), and in described concrete bearing platform (1) and concrete pier shaft (5), distinguish pre-buried cushion cap pre-embedded steel slab (3) and pier shaft pre-embedded steel slab (2);
B, successively column steel pipe (6), bracket horizontal support (8), bracket bearing diagonal (10), unloading sand tube top cap (9), Two bors d's oeuveres i iron (11) and Bei Leiliang (13) be installed;
C, lay channel-section steel (14) at described Bei Leiliang (13), at channel-section steel (14) laying bamboo offset plate (15), finish the construction of cast-in-place beam falsework.
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| CN201310163620.2A CN103243652B (en) | 2013-05-06 | 2013-05-06 | A kind of large-span non-floor type cast-in-place beam falsework and construction method thereof |
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Cited By (16)
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| CN103866696A (en) * | 2014-03-26 | 2014-06-18 | 中铁二十四局集团安徽工程有限公司 | Cast-in-situ support of long-cantilever zero segment of short-pylon cable-stayed bridge |
| CN104963295A (en) * | 2015-07-27 | 2015-10-07 | 中铁九局集团第二工程有限公司 | Support frame for non-ground internal-force balanced cast-in-place beam and construction method thereof |
| CN105155414A (en) * | 2015-09-24 | 2015-12-16 | 中铁四局集团第二工程有限公司 | Floor-type slant-legged steel truss bracket of lower transverse beam of large-span cable tower |
| CN105625193A (en) * | 2016-03-14 | 2016-06-01 | 中铁二十四局集团安徽工程有限公司 | Whole-span cast-in-place beam inverted-triangle formwork supporting frame and construction method thereof |
| CN106012848A (en) * | 2016-06-08 | 2016-10-12 | 江苏燕宁建设工程有限公司 | Construction method for embedded bracket of cast-in-place box beam and bridge |
| CN106087746A (en) * | 2016-06-14 | 2016-11-09 | 江苏燕宁建设工程有限公司 | A kind of cast-in-situ box girder falsework construction method and bridge |
| CN106939557A (en) * | 2017-05-11 | 2017-07-11 | 中铁第五勘察设计院集团有限公司 | A kind of pin-connected panel bracket casting platform of brace support |
| CN107059646A (en) * | 2017-06-15 | 2017-08-18 | 中国十七冶集团有限公司 | A kind of angle-table bracket construction method of cast-in-place large span gate-type pier capping beam |
| CN107190986A (en) * | 2017-05-02 | 2017-09-22 | 郑楚英 | A kind of construction method of concrete structure |
| CN108103956A (en) * | 2017-12-21 | 2018-06-01 | 中铁三局集团华东建设有限公司 | The construction method of cantilever casting beam end bay battered leg |
| CN108411790A (en) * | 2018-05-11 | 2018-08-17 | 中铁广州工程局集团有限公司 | A kind of adjustable installing bracket of prefabricated assembled segmentation bent cap |
| CN110005193A (en) * | 2019-03-27 | 2019-07-12 | 中建三局集团有限公司 | A kind of shuttering supporting mechanism of high-precision concrete roof |
| CN110593102A (en) * | 2019-08-22 | 2019-12-20 | 中铁十六局集团第四工程有限公司 | High mound continuous beam construction support |
| CN111576734A (en) * | 2020-04-30 | 2020-08-25 | 中建五局第三建设有限公司 | Secondary-support-free high formwork overlapping construction method for large-section concrete beam |
| CN112227227A (en) * | 2020-10-21 | 2021-01-15 | 中铁八局集团第一工程有限公司 | Construction method of large-span beam column type support |
| CN113585076A (en) * | 2021-07-08 | 2021-11-02 | 中国建筑第六工程局有限公司 | Construction method of overwater large-span double-layer cast-in-place beam |
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Cited By (18)
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| CN103866696A (en) * | 2014-03-26 | 2014-06-18 | 中铁二十四局集团安徽工程有限公司 | Cast-in-situ support of long-cantilever zero segment of short-pylon cable-stayed bridge |
| CN104963295A (en) * | 2015-07-27 | 2015-10-07 | 中铁九局集团第二工程有限公司 | Support frame for non-ground internal-force balanced cast-in-place beam and construction method thereof |
| CN105155414A (en) * | 2015-09-24 | 2015-12-16 | 中铁四局集团第二工程有限公司 | Floor-type slant-legged steel truss bracket of lower transverse beam of large-span cable tower |
| CN105625193A (en) * | 2016-03-14 | 2016-06-01 | 中铁二十四局集团安徽工程有限公司 | Whole-span cast-in-place beam inverted-triangle formwork supporting frame and construction method thereof |
| CN106012848A (en) * | 2016-06-08 | 2016-10-12 | 江苏燕宁建设工程有限公司 | Construction method for embedded bracket of cast-in-place box beam and bridge |
| CN106012848B (en) * | 2016-06-08 | 2018-02-06 | 江苏燕宁建设工程有限公司 | A kind of pre-buried bracket construction method of cast-in-situ box girder and bridge |
| CN106087746A (en) * | 2016-06-14 | 2016-11-09 | 江苏燕宁建设工程有限公司 | A kind of cast-in-situ box girder falsework construction method and bridge |
| CN107190986A (en) * | 2017-05-02 | 2017-09-22 | 郑楚英 | A kind of construction method of concrete structure |
| CN106939557A (en) * | 2017-05-11 | 2017-07-11 | 中铁第五勘察设计院集团有限公司 | A kind of pin-connected panel bracket casting platform of brace support |
| CN106939557B (en) * | 2017-05-11 | 2019-01-22 | 中铁第五勘察设计院集团有限公司 | A kind of pin-connected panel bracket casting platform of brace support |
| CN107059646A (en) * | 2017-06-15 | 2017-08-18 | 中国十七冶集团有限公司 | A kind of angle-table bracket construction method of cast-in-place large span gate-type pier capping beam |
| CN108103956A (en) * | 2017-12-21 | 2018-06-01 | 中铁三局集团华东建设有限公司 | The construction method of cantilever casting beam end bay battered leg |
| CN108411790A (en) * | 2018-05-11 | 2018-08-17 | 中铁广州工程局集团有限公司 | A kind of adjustable installing bracket of prefabricated assembled segmentation bent cap |
| CN110005193A (en) * | 2019-03-27 | 2019-07-12 | 中建三局集团有限公司 | A kind of shuttering supporting mechanism of high-precision concrete roof |
| CN110593102A (en) * | 2019-08-22 | 2019-12-20 | 中铁十六局集团第四工程有限公司 | High mound continuous beam construction support |
| CN111576734A (en) * | 2020-04-30 | 2020-08-25 | 中建五局第三建设有限公司 | Secondary-support-free high formwork overlapping construction method for large-section concrete beam |
| CN112227227A (en) * | 2020-10-21 | 2021-01-15 | 中铁八局集团第一工程有限公司 | Construction method of large-span beam column type support |
| CN113585076A (en) * | 2021-07-08 | 2021-11-02 | 中国建筑第六工程局有限公司 | Construction method of overwater large-span double-layer cast-in-place beam |
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