CN110565528A - Novel assembled cast in situ concrete support - Google Patents
Novel assembled cast in situ concrete support Download PDFInfo
- Publication number
- CN110565528A CN110565528A CN201910731266.6A CN201910731266A CN110565528A CN 110565528 A CN110565528 A CN 110565528A CN 201910731266 A CN201910731266 A CN 201910731266A CN 110565528 A CN110565528 A CN 110565528A
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- Prior art keywords
- support
- place concrete
- cast
- trapezoid
- standard
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention relates to a novel assembly type cast-in-place concrete support which comprises a steel template, a distribution beam, a trapezoidal support sheet, a standard support sheet, a bolt, a connecting flower stand, a tie bar, a shoulder pole beam and a supporting platform, and a bridge-shaped support is formed. The support has the characteristics of light dead weight, simple assembly, reasonable structural stress and less dependence on terrain environment. The method completely avoids treatment of the foundation on the construction site, greatly saves construction period and construction cost, meets the requirements of energy conservation and environmental protection for building construction, and achieves good use effect.
Description
Technical Field
The invention relates to a support form of a cast-in-place concrete bridge, and belongs to the technical field of bridge construction tools.
Background
At present, most of domestic cast-in-place bridge supports generally adopt full framing, pier beam type supports and novel non-temporary pier supports.
1. The height of the full support cannot exceed 24m, the overall stability of the support is poor, the steel consumption is large, the damage to the environment is serious, the requirements on the terrain and the geology are high, the foundation treatment construction cost is high in the foundation with the support form in the environment with poor foundation conditions, and the construction period is long.
2. The dependence on terrain and geological environment is reduced in the pier beam type support, but due to the limitation of strength and rigidity of the Berea beam, the span of the support design is too small, the number of temporary steel pipe column piers is large, the assembly and disassembly time is long, the construction cost is relatively high, and the construction period is relatively long. After the height of the support is increased, in order to ensure the stability of the stand columns, the stand columns must be horizontally and longitudinally connected in parallel, the steel consumption is large, and the limitation on the use condition is large.
3. Novel no interim mound support adopts arch base, and full hall support is adopted to the top, has solved interim buttress setting, has avoided the reliance to topography, geological environment, fine solution the problem on support basis, but superstructure is limited with full hall support anyhow, does not solve full hall support height limited and poor stability's defect. And aiming at different span structures, the structure has poor applicability and low repeated utilization rate.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a novel assembled cast in situ concrete support form to solve the problem that current support can not be applicable to different span construction requirements.
The technical scheme of the invention is as follows:
The utility model provides an assembled cast in situ concrete support, includes the standard support piece of beam type, and the trapezoidal support piece of standard support piece both ends installation constitutes bridge shape support piece, and the horizontal parallel arrangement of polylith bridge shape support piece constitutes the support, connects through connecting the pergola between the adjacent trapezoidal support piece.
The whole trapezoidal support piece is in a right trapezoid shape, the upper bottom edge of the trapezoid is connected with the end part of the standard support piece through a bolt, and the oblique waist of the trapezoid is positioned on the inner side of the bridge-shaped support piece.
The trapezoid support piece comprises a support vertical rod, an upper chord and a lower chord which respectively form a lower bottom, a right-angle waist and an oblique waist of a right-angle trapezoid structure, the trapezoid is internally provided with a grid structure consisting of oblique web members, vertical web members and transverse web members, and the end part of the vertical web member as the upper bottom of the trapezoid is as long as the standard support piece. The lower chord is an oblique straight line, so that the shearing resistance of the support of the trapezoidal support piece is improved.
The lower ends of the vertical rods of the support of the left and right trapezoidal support pieces are connected by a tie rod.
The standard support piece is formed by splicing a plurality of standard sections, and the support span can be adjusted by assembling and disassembling the standard sections aiming at different bridge spans.
The bridge-shaped support pieces are transversely connected into a whole through the connecting flower racks, and the connecting flower racks comprise connecting cross rods, connecting vertical rods and a frame structure formed by connecting inclined rods, so that the overall transverse stability of the support is ensured.
And a distribution beam and a steel template are arranged above the support to form a foundation for cast-in-place concrete pouring.
The side surfaces of one group of the parallel ladder-shaped support pieces are provided with carrying pole beams, and a tie bar is arranged between the carrying pole beams of the left and right groups of the ladder-shaped support pieces.
The tie bar is made of flexible materials such as steel strands, finish rolling threaded rods or round steel and the like with excellent tie bar performance; the tie bar stretches a certain prestress through the shoulder pole beam, and the arrangement of the shoulder pole beam enables the whole support piece to bear the pretension force.
Support platform is below the support montant, and support platform supports at different platforms according to different pier heights, can design the bracket structure when the pier height is higher, and direct support is on cushion cap or steel pipe stand when the pier height is shorter.
The invention has the beneficial effects that: compared with the prior art, the technical scheme of the invention avoids dependence on the field environment and treatment of the field foundation due to reasonable stress form and high-strength material; meanwhile, the technical scheme of the invention is applicable to assembly and disassembly through the standard sheets aiming at different spans, the structure of the trapezoidal support sheet does not need to be changed, the self weight of the support is light, the assembly and disassembly are simple, the construction period and the construction cost are greatly reduced, and the national requirements on energy conservation and environmental protection of the building industry are met.
1. After the novel concrete support is installed, the concrete falls on supporting platforms such as bearing platform concrete, steel pipe columns or steel corbels, supporting structures can be arranged at two ends only without or less than the middle of different bridge span supports, dependence on site geological environment is reduced or avoided, and construction period and construction cost are greatly reduced.
2. The novel concrete support is formed by assembling and welding high-strength Q345 small steel pipes or profile steels, is light in single piece installation weight, is assembled by a crane, and is simple and convenient to construct.
3. novel concrete support adopts the little steel pipe of high strength Q345 material or shaped steel assembly welding to form, and support department support cross-section is increased, and the height of bailey roof beam is 1.5m, and highly there is 3 ~ 5m of this trapezoidal support about, overcomes the support department pole setting bearing capacity limited defect that cross-section settings such as bailey roof beam lead to, and bearing capacity tradition pier beam formula support relatively improves greatly, through finite element software analog computation result, and the novel support design span of same bridge construction can reach about 3 times of tradition pier beam formula support.
4. Novel concrete support, the hunch foot can produce great horizontal thrust in the work progress, prevents that bridge lower part major structure from producing the moment of flexure that topples, sets up the balanced horizontal thrust of tie rod.
5. The novel concrete support is applicable to different structural object spans through increasing and decreasing the number of the standard sections.
Drawings
fig. 1 is an elevation view of the inventive structure.
Fig. 2 is a side view of the novel invention.
Fig. 3 is a drawing of the connecting flower stand of the invention.
Detailed Description
As shown in figure 1, the support is formed by stacking and installing a plurality of bridge-shaped support pieces, each bridge-shaped support piece comprises a trapezoidal support piece 1 at two ends and a standard support piece 2 in the middle, the structure of each standard support piece 2 is similar to a Bailey beam structure, and the plurality of standard support pieces 2 are connected end to end. The trapezoidal support pieces 1 at two ends comprise support vertical rods 1-1, lower chords 1-2, diagonal web members 1-3, upper chords 1-4, vertical web members 1-5 and transverse web members 1-6, the support vertical rods 1-1 serve as the lower bottom of a right trapezoid, the upper chords 1-4 serve as the vertical waist, the lower chords 1-2 serve as the diagonal waist, the vertical web members 1-5 are parallel to the support vertical rods 1-1 and are distributed in the trapezoid at equal intervals, the vertical web members 1-5 at the end serve as the upper bottom of the right trapezoid, and the vertical web members 1-5, the diagonal web members 1-3 and the transverse web members 1-6 are arranged in the trapezoid in a staggered mode to form a triangular grid.
The support piece of the trapezoidal support piece 1 is longitudinally connected with the standard support piece 2 through a bolt 8, the standard support pieces 2 are also connected through the bolt 8, and the support span can be adjusted by assembling and disassembling the standard sections aiming at different bridge spans.
The bridge-shaped support pieces are transversely connected into a whole through the connecting flower stand 5, and the connecting flower stand 5 comprises a connecting cross rod 5-1, a connecting vertical rod 5-2 and a connecting inclined rod 5-3, so that the transverse stability of the whole support is ensured. The connecting flower stands 5 are generally only used for connecting the stacked trapezoidal support pieces 1 into a whole, 3 groups of connecting flower stands 5 are arranged on each group of stacked trapezoidal support pieces 1 and are respectively positioned on the left side, the middle and the right side of each trapezoidal support piece 1, and if the size of each trapezoidal support piece 1 is large, a plurality of groups of connecting flower stands 5 can be additionally arranged in the middle.
Because the support is stressed, the generated horizontal force is large, so that the horizontal force is balanced through the tie bars 6, and the tie bars 6 can be arranged between the trapezoidal support pieces 1 at the two ends of each bridge-shaped support piece to connect the support vertical rods 1-1 at the two sides. The whole support can also be provided with only one tie bar 6, the tie bar 6 is arranged between two shoulder pole beams 7, the shoulder pole beams 7 are transversely arranged on the outer side of the trapezoidal support sheet 1 to connect a plurality of vertical support rods 1-1, the tie bar 6 is tensioned with a certain prestress through the shoulder pole beams 7, and the arrangement of the shoulder pole beams 7 enables the whole support sheet to bear the pretension force.
The distribution beam 3 and the steel formwork 4 are arranged above the support to form a foundation for cast-in-place concrete pouring, the support is arranged below the support and is installed on a supporting platform 9, specifically, the lower end of a vertical support rod 1-1 is fixed on the supporting platform 9, the supporting platform 9 is supported on different platforms according to different pier heights, a bracket structure can be designed when the pier height is high, and the support is directly supported on a bearing platform or a steel pipe stand column when the pier height is low.
The present invention is not described in detail, but is known to those skilled in the art. Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides an assembled cast in situ concrete support, includes standard support piece (2) of beam type, its characterized in that: trapezoidal support pieces (1) are installed at two ends of each standard support piece (2) to form bridge-shaped support pieces, a plurality of bridge-shaped support pieces are transversely arranged in parallel to form a support, and adjacent trapezoidal support pieces (1) are connected through a connecting flower stand (5).
2. The fabricated cast-in-place concrete support of claim 1, wherein: the whole trapezoidal support piece (1) is in a right trapezoid shape, the upper bottom edge of the trapezoid is connected with the end part of the standard support piece (2) through a bolt (8), and the oblique waist of the trapezoid is positioned on the inner side of the bridge-shaped support piece.
3. The fabricated cast-in-place concrete support of claim 2, wherein: the trapezoid support piece (1) is composed of a support vertical rod (1-1), an upper chord (1-4) and a lower chord (1-3) which respectively form a lower bottom, a right angle waist and an oblique waist of a right-angle trapezoid structure, a grid structure which is composed of oblique web members (1-3), vertical web members (1-5) and transverse web members (1-6) is arranged in the trapezoid, and the length of the vertical web members (1-5) with the end parts as the upper bottom of the trapezoid is the same as the width of the standard support piece (2).
4. The fabricated cast-in-place concrete support of claim 2, wherein: the lower ends of the vertical support rods (1-1) of the left and right trapezoidal support pieces (1) are connected by a tie bar (6).
5. The fabricated cast-in-place concrete support of claim 2, wherein: the standard support sheet (2) is formed by splicing a plurality of standard sections, and the span of the support can be adjusted by assembling and disassembling the standard sections.
6. The fabricated cast-in-place concrete support of claim 2, wherein: the bridge-shaped support pieces are transversely connected into a whole through the connecting flower stand (5), and the connecting flower stand (5) comprises a frame structure consisting of connecting cross rods (5-1), connecting vertical rods (5-2) and connecting inclined rods (5-3).
7. The fabricated cast-in-place concrete support of claim 2, wherein: a distribution beam (3) and a steel template (4) are arranged above the support to form a foundation for cast-in-place concrete pouring.
8. The fabricated cast-in-place concrete support of claim 3, wherein: the side surfaces of one group of the parallel ladder-shaped support sheets (1) are provided with carrying pole beams (7), and a tie bar (6) is arranged between the carrying pole beams (7) of the left and right groups of the ladder-shaped support sheets (1).
9. The fabricated cast-in-place concrete support of claim 8, wherein: the tie bar (6) is made of flexible materials such as steel stranded wires, finish rolling threaded rods or round steel with excellent tie bar performance; the tie bar (6) is tensioned with a certain prestress through the shoulder pole beam (7).
10. The fabricated cast-in-place concrete support of claim 3, wherein: supporting platforms (9) are arranged below the vertical support rods (1-1), the supporting platforms (9) are supported on different platforms according to different pier heights, a bracket structure can be designed when the pier height is high, and the supporting platforms are directly supported on bearing platforms or steel pipe columns when the pier height is low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910731266.6A CN110565528A (en) | 2019-08-08 | 2019-08-08 | Novel assembled cast in situ concrete support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910731266.6A CN110565528A (en) | 2019-08-08 | 2019-08-08 | Novel assembled cast in situ concrete support |
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| Publication Number | Publication Date |
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| CN110565528A true CN110565528A (en) | 2019-12-13 |
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| CN201910731266.6A Pending CN110565528A (en) | 2019-08-08 | 2019-08-08 | Novel assembled cast in situ concrete support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808714A (en) * | 2022-04-25 | 2022-07-29 | 北京五洲鼎盛科技有限公司 | Assembled support and intelligent hydraulic jacking type installation method thereof |
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| CN108729354A (en) * | 2018-05-30 | 2018-11-02 | 贵州路桥集团有限公司 | A kind of bridge mobile formwork and its construction method downstream |
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| DE804597C (en) * | 1948-10-19 | 1951-04-26 | Westdeutsche Mannesmannroehren | Binder in welded tube construction |
| CN201103194Y (en) * | 2007-10-23 | 2008-08-20 | 中冶京唐建设有限公司 | Girder for light steel factory building roofing underplate installation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114808714A (en) * | 2022-04-25 | 2022-07-29 | 北京五洲鼎盛科技有限公司 | Assembled support and intelligent hydraulic jacking type installation method thereof |
| CN114808714B (en) * | 2022-04-25 | 2024-01-30 | 北京五洲鼎盛科技有限公司 | Assembled bracket and intelligent hydraulic jacking type mounting method thereof |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 550003 No. 23, jujube Road, Yunyan District, Guizhou, Guiyang Applicant after: CHINA RAILWAY NO.5 ENGINEERING GROUP CO., LTD. Applicant after: ROAD AND BRIDGE ENGINEERING CO., LTD. OF CHINA RAILWAY NO.5 ENGINEERING GROUP Address before: 550003 Zao Shan Road, Nanming District, Guiyang, Guizhou Province, No. 23 Applicant before: CHINA RAILWAY NO.5 ENGINEERING GROUP CO., LTD. Applicant before: ROAD AND BRIDGE ENGINEERING CO., LTD. OF CHINA RAILWAY NO.5 ENGINEERING GROUP |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |