CN203625776U - Arch spring anchoring structure for concrete-filled steel tube arch bridge - Google Patents
Arch spring anchoring structure for concrete-filled steel tube arch bridge Download PDFInfo
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- CN203625776U CN203625776U CN201320863388.9U CN201320863388U CN203625776U CN 203625776 U CN203625776 U CN 203625776U CN 201320863388 U CN201320863388 U CN 201320863388U CN 203625776 U CN203625776 U CN 203625776U
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Abstract
The utility model discloses an arch spring anchoring structure for a concrete-filled steel tube arch bridge. The arch spring anchoring structure comprises an anchoring box, flange plates located outside the anchoring box, and stiffening plates used for connecting the anchoring box with the flange plates. Arch bridge main arch rib steel pipes sequentially penetrate through the flange plates and a top plate of the anchoring box and then enter the anchoring box. The stiffening plates are connected with the outer walls of the main arch rib steel pipes. Due to the anchoring method for the concrete-filled steel tube arch bridge, the problem that arch spring anchoring of the through concrete-filled steel tube arch bridge and tie bars conflict is solved, and arch spring anchoring safety is improved; meanwhile, the structure size of arch spring concrete is reduced, and the landscape effect is better.
Description
Technical field
The utility model relates to bridge field, particularly a kind of concrete-filled steel tubes arch bridge arch springing anchor structure.
Background technology
Concrete-filled steel tubes arch bridge belongs to the one in steel-concrete combined structure.Concrete-filled steel tubes arch bridge is by fill concrete in steel pipe, because the radial constraint of steel pipe limits the concrete expansion of pressurized, makes concrete in three dimension stress state, thereby significantly improves concrete compressive strength.Steel pipe has lengthways main steel bar and the laterally effect of cuff concurrently simultaneously, can be used as construction formwork simultaneously, facilitates concreting, in work progress, steel pipe can be used as stiffness load-bearing skeleton, and its welding job is simple, lift lightweight, thereby can simplify construction technology, shorten the construction period.
In arch bridge, two ends of arch are called arch springing, and in prior art, the structure that is connected of the main arch arch springing of concrete-filled steel tubes arch bridge and abut, adopts embedded steel tube to insert abut, built-in pipe and main arch sections employing welding butter joint.Embedded steel tube bottom arranges bearing plate, under it, steel mesh reinforcement should be set, and distribution rings is set to anchoring structures such as muscle, weldering nail or PBL shear connectors at steel pipe periphery.The shortcoming of this structure: (1) steel pipe anchorage length is larger, main arch steel pipe easily conflicts with tie-rod in concrete saddle, must increase the above abut concrete of bridge floor height for Through Concrete-filled Steel Tubular Arch Bridge and can avoid this problem, increase cost, destroy bridge floor view.(2) for multitube lattice arch bridge, main arch rib moment of flexure is very little, take tension and compression as main.Because concrete tensile strength is very little, in the time of main arch steel pipe tension, the easy unsticking of flange and concrete interface, steel pipe acts on flange concrete in addition to concrete outer pull out force, easily cause the splitting of main arch steel pipe surrounding concrete, and moisture infiltration easily causes concrete expansion, carbonization, steel pipe corrosion, affect anchoring effect and structural safety.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of concrete-filled steel tubes arch bridge arch springing anchor structure, can reduce abut concrete structure size, improve anchoring strength.
Concrete-filled steel tubes arch bridge arch springing anchor structure of the present utility model, comprise anchor case, be positioned at flange and the stiffener that anchor case is connected with flange outside anchor case, arch bridge main arch rib steel pipe enters in anchor case through flange, anchor roof box successively, and described stiffener is connected with main arch rib outer wall of steel pipe.
Further, in described anchor case, be provided with PBL shear connector, described PBL shear connector is connected with anchor case and main arch rib steel pipe.
Further, in described anchor case, be provided with multiple presstressed reinforcing steels, described presstressed reinforcing steel is arranged in around tension side main arch steel pipe, and through anchor roof box and flange, with the anchoring of flange external surface.
Further, in described anchor case, be provided with multiple crab-bolts, described crab-bolt is arranged in around compression-side main arch steel pipe, through anchor roof box and flange, respectively with flange external surface and the anchoring of anchor roof box external surface.
Further, described anchor box top is provided with the seal closure of flange, stiffener, presstressed reinforcing steel and crab-bolt sealing.
Further, described seal closure top is provided with active window.
Further, described active window arranges weather strip.
The beneficial effects of the utility model: concrete-filled steel tubes arch bridge arch springing steel anchor box of the present utility model, comprise anchor case, be positioned at flange and the stiffener that anchor case is connected with flange outside anchor case, arch bridge main arch rib steel pipe enters in anchor case through flange, anchor roof box successively, described stiffener is connected with main arch rib outer wall of steel pipe, this concrete-filled steel tubes arch bridge anchor type, the anchoring of Through Concrete-filled Steel Tubular Arch Bridge arch springing and tie-rod collision problem are solved, improve arch springing anchoring degree of safety, reduced arch springing concrete structure size, landscape effect is better simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is perspective view of the present utility model;
Fig. 2 is the perspective view that the utility model omits seal closure;
Fig. 3 is the upward view of Fig. 2.
The specific embodiment
Below with reference to accompanying drawing, the utility model is elaborated, as shown in the figure: the concrete-filled steel tubes arch bridge arch springing anchor structure of the present embodiment, comprises anchor case 1, is positioned at flange 2 and the stiffener 3 that anchor case 1 is connected with flange 2 outside anchor case.The semi-enclosed casing of the bottom opening that anchor case is made up of 5 block plates, is positioned at concrete saddle, and the external surface of its 5 block plate is close to concrete saddle external surface.Arch bridge main arch steel pipe 8 enters in anchor case 1 through flange 2, anchor case 1 top board successively, described stiffener 3 is connected with main arch outer wall of steel pipe, main arch steel pipe 8 arch springing sections and anchor case 1 are pre-buried to concrete saddle, and main arch steel pipe 8 and flange 2, stiffener 3 and anchor case 1 are welded, so just form the anchor structure of main arch arch springing.Compare and adopt embedded steel tube to insert abut, again by the structure of built-in pipe and main arch sections employing welding butter joint, anchor structure of the present utility model can reduce the size of abut, the length that main arch pipe inserts in abut reduces, solve the anchoring of Through Concrete-filled Steel Tubular Arch Bridge arch springing and tie-rod collision problem, promoted landscape effect; Meanwhile, arch springing anchoring strength is large, anchor structure safety.
As the further improvement of technique scheme, in described anchor case 1, be provided with PBL shear connector 4, described PBL shear connector 4 is connected with anchor case 1 and main arch steel pipe, in the perforated panel of PBL shear connector 4, wears reinforcing bar, improves arch springing shear resistance.
As the further improvement of technique scheme, in described anchor case 1, be provided with multiple presstressed reinforcing steels 5, described presstressed reinforcing steel 5 is prestress fine rolled twisted bar, be arranged in around tension side main arch steel pipe 81, and through anchor case 1 top board and flange 2, with flange 2 end face anchorings, presstressed reinforcing steel 5 can apply prestressing force, strengthen anchoring, prevents that anchor case 1 steel plate and concrete from separating in the time of tension.
As the further improvement of technique scheme, in described anchor case 1, be provided with multiple crab-bolts 6, described crab-bolt 6 is arranged in around compression-side main arch steel pipe 82, through anchor case 1 top board and flange 2, with flange 2 end faces and the 1 top board external surface anchoring of anchor case, strengthen the horizontal shear resistance of arch springing respectively.
As the further improvement of technique scheme, described anchor case 1 top is provided with the seal closure 7 that flange 2, stiffener 3, presstressed reinforcing steel 5 and crab-bolt 6 are sealed, and prevents the corrosion arch springing such as air, water and anchor case junction.
As the further improvement of technique scheme, described seal closure 7 tops are provided with active window 71, are convenient to observe arch springing situation, pour into grease anticorrosion, when routine servicing and maintenance, also can be undertaken by this window.
As the further improvement of technique scheme, described active window 71 is provided with weather strip 72, and holding chamber exogenous damp air infiltration enters in seal closure.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (7)
1. a concrete-filled steel tubes arch bridge arch springing anchor structure, it is characterized in that: comprise bottom opening anchor case (1), be positioned at flange (2) and the stiffener (3) that anchor case (1) is connected with flange (2) outside anchor case, arch bridge main arch steel pipe (8) enters in anchor case (1) through flange (2), anchor case (1) top board successively, and described stiffener (3) is connected with main arch outer wall of steel pipe.
2. concrete-filled steel tubes arch bridge arch springing anchor structure according to claim 1, is characterized in that: in described anchor case (1), be provided with PBL shear connector (4), described PBL shear connector (4) is connected with anchor case (1) and main arch steel pipe.
3. concrete-filled steel tubes arch bridge arch springing anchor structure according to claim 2, it is characterized in that: in described anchor case (1), be provided with multiple presstressed reinforcing steels (5), described presstressed reinforcing steel (5) is arranged in around tension side main arch steel pipe, and through anchor case (1) top board and flange (2), with flange (2) end face anchoring.
4. concrete-filled steel tubes arch bridge arch springing anchor structure according to claim 3, it is characterized in that: in described anchor case (1), be provided with multiple crab-bolts (6), described crab-bolt (6) is arranged in around compression-side main arch steel pipe, through anchor case (1) top board and flange (2), respectively with flange (2) end face and the anchoring of anchor case (1) top board external surface.
5. concrete-filled steel tubes arch bridge arch springing anchor structure according to claim 4, is characterized in that: described anchor case (1) top is provided with the seal closure (7) of flange (2), stiffener (3), presstressed reinforcing steel (5) and crab-bolt (6) sealing.
6. concrete-filled steel tubes arch bridge arch springing anchor structure according to claim 5, is characterized in that: described seal closure (7) top is provided with active window (71).
7. concrete-filled steel tubes arch bridge arch springing anchor structure according to claim 6, is characterized in that: described active window (71) arranges weather strip (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863388.9U CN203625776U (en) | 2013-12-25 | 2013-12-25 | Arch spring anchoring structure for concrete-filled steel tube arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863388.9U CN203625776U (en) | 2013-12-25 | 2013-12-25 | Arch spring anchoring structure for concrete-filled steel tube arch bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203625776U true CN203625776U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320863388.9U Expired - Fee Related CN203625776U (en) | 2013-12-25 | 2013-12-25 | Arch spring anchoring structure for concrete-filled steel tube arch bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643634A (en) * | 2013-12-25 | 2014-03-19 | 招商局重庆交通科研设计院有限公司 | Anchoring structure for arch spring of concrete-filled steel tube arch bridge |
| CN104389271A (en) * | 2014-12-01 | 2015-03-04 | 中铁山桥集团有限公司 | Stiff support for mounting arch feet of concrete-filled steel tube arch rib bridge |
-
2013
- 2013-12-25 CN CN201320863388.9U patent/CN203625776U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643634A (en) * | 2013-12-25 | 2014-03-19 | 招商局重庆交通科研设计院有限公司 | Anchoring structure for arch spring of concrete-filled steel tube arch bridge |
| CN103643634B (en) * | 2013-12-25 | 2016-04-06 | 招商局重庆交通科研设计院有限公司 | Concrete-filled steel tubes arch bridge arch springing anchor structure |
| CN104389271A (en) * | 2014-12-01 | 2015-03-04 | 中铁山桥集团有限公司 | Stiff support for mounting arch feet of concrete-filled steel tube arch rib bridge |
| CN104389271B (en) * | 2014-12-01 | 2016-05-11 | 中铁山桥集团有限公司 | A kind of steel pipe concrete arch rib bridge arch pin is installed and is used stiffness support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yi Hui Inventor after: Li Jun Inventor after: Su Jiannan Inventor after: Chang Guoqiang Inventor after: Zhang Jie Inventor before: Yi Hui Inventor before: Li Jun |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YI HUI LI JUN TO: YI HUI LI JUN SU JIANNAN CHANG GUOQIANG ZHANG JIE |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20171225 |