CN202705885U - Welding-free support node for continuous beam bridge made of concrete-filled steel tube - Google Patents
Welding-free support node for continuous beam bridge made of concrete-filled steel tube Download PDFInfo
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- CN202705885U CN202705885U CN 201220338209 CN201220338209U CN202705885U CN 202705885 U CN202705885 U CN 202705885U CN 201220338209 CN201220338209 CN 201220338209 CN 201220338209 U CN201220338209 U CN 201220338209U CN 202705885 U CN202705885 U CN 202705885U
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- concrete
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- steel tube
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Abstract
The utility model relates to a welding-free support node for a continuous beam bridge made of a concrete-filled steel tube. The welding-free support node comprises a concrete-filled steel tube beam and a concrete-filled steel tube column, wherein a short steel tube is welded on an outer tube wall of the steel tube of the concrete-filled steel tube beam; the short steel tube is inserted into the concrete-filled steel tube column; and the concrete is filled in the short steel tube. The support node for the continuous beam bridge made of the concrete-filled steel tube can ensure the continuity of force transfer between the beam and the column during the contracting and creeping processes of the concrete in the column, and meanwhile, a welding-free technology can avoid the adverse effect of welding residual stress and also can simplify the construction process and quicken the construction speed.
Description
Technical field
The utility model relates to the building building technology field, and especially a kind of concrete filled steel tube continuous girder bridge exempts to weld support node.
Background technology
Steel tube-concrete composite structure is used commonplace at present in bridge engineering.Take continuous girder bridge as example, when striding the footpath when little, girder can adopt clean steel pipe concrete compound beam, and when striding the footpath when larger, girder then can adopt the larger concrete filled steel tube of rigidity to make up trusses (its upper and lower chord member is concrete filled steel tube, and web member is empty steel pipe); For pier stud, then can adopt the concrete filled steel tube coupled column.All adopt the continuous girder bridge of steel tube-concrete composite structure for this girder and pier stud, no matter girder is to adopt clean steel pipe concrete compound beam or concrete filled steel tube combination trusses, its girder and the connectivity problem of pier stud in fact be exactly steel tube concrete beam with steel core concrete column between be connected.For this type of connection, when beam, column cross-section size relatively near the time, usually way is that outside steel pipe with steel tube concrete beam and steel core concrete column directly welds; And when beam, column cross-section size differ larger, then need to add the sealing top board at capital, and steel tube concrete beam is placed on the plate that binds by backing plate.Existing connection way not only can make and have serious welding residual stress problem in beam, the post steel pipe, but also can be because of the concrete shrinkage in the pier stud, creep etc. former thereby make the capital concrete phenomenon of coming to nothing, cause pier stud rigidity and bearing capacity to be affected.
The utility model content
Be connected the deficiency of way with the concrete filled steel tube pier stud in order to improve steel tube concrete beam in the present concrete filled steel tube continuous girder bridge, the utility model provides a kind of concrete filled steel tube continuous girder bridge to exempt to weld support node; This concrete filled steel tube continuous girder bridge support node can guarantee that in post concrete shrinks and the continuity of the power transmission between process central sill, the post of creeping, and exempts from simultaneously the adverse effect that welding procedure both can have been avoided welding residual stress.
The technical solution of the utility model is: a kind of concrete filled steel tube continuous girder bridge exempts to weld support node, comprise steel tube concrete beam and steel core concrete column, it is characterized in that: be welded with short steel pipes on the steel pipe outer tube wall of described steel tube concrete beam, described short steel pipes is inserted in the steel core concrete column, is filled with concrete in the described short steel pipes.
Further, the outside diameter d of described short steel pipes is 0.7 ~ 0.9 times of outer diameter of steel pipes D of steel tube concrete beam; The buried depth h that described short steel pipes is arranged in steel core concrete column is not less than 2 times of outer diameter of steel pipes D of steel tube concrete beam.
Further, the longitudinal central axis line of the longitudinal central axis line of described short steel pipes and steel core concrete column overlaps.
Further, the intersection point place that is positioned on the steel pipe outer tube wall of steel tube concrete beam with described short steel pipes longitudinal central axis line has the steam vent that an aperture is 20 ~ 30mm.
Further, described steel tube concrete beam bottom and steel core concrete column end face is 20 ~ 30mm apart from t.
The utility model has the advantage of: this concrete filled steel tube continuous girder bridge support node can guarantee that in post concrete shrinks and the continuity of the power transmission between process central sill, the post of creeping, exempt from simultaneously welding procedure and both can avoid the adverse effect of welding residual stress, can simplify construction technology, accelerating construction progress again.
Description of drawings
Fig. 1 is the elevation of the utility model embodiment 1.
Fig. 2 is the I-I sectional drawing of Fig. 1.
Fig. 3 is the II-II sectional drawing of Fig. 1.
Fig. 4 is the III-III sectional drawing of Fig. 1.
Description of drawings:
The steel pipe of 1-steel tube concrete beam, the steel pipe of 2-steel core concrete column, 3-concrete, 4.-short steel pipes, the 5-fixing steel plate, the 6-steam vent, 7-steel tube concrete beam longitudinal central axis line, 8-steel core concrete column longitudinal central axis line, the outer diameter of steel pipes of D-steel tube concrete beam, the external diameter of d-short steel pipes, the h-short steel pipes is arranged in the buried depth of steel core concrete column, the distance of t-steel tube concrete beam bottom and steel core concrete column end face.
The specific embodiment
For above-mentioned feature and advantage of the present utility model can be become apparent, embodiment cited below particularly, and cooperation accompanying drawing be described in detail below, but the utility model are not limited to this.
With reference to legend, a kind of concrete filled steel tube continuous girder bridge exempts to weld support node, comprise steel tube concrete beam and steel core concrete column, it is characterized in that: be welded with short steel pipes on the steel pipe outer tube wall of described steel tube concrete beam, described short steel pipes is inserted in the steel core concrete column, is filled with concrete in the described short steel pipes.
The outside diameter d of described short steel pipes is 0.7 ~ 0.9 times of outer diameter of steel pipes D of steel tube concrete beam; The buried depth h that described short steel pipes is arranged in steel core concrete column is not less than 2 times of outer diameter of steel pipes D of steel tube concrete beam.
The longitudinal central axis line of described short steel pipes and the longitudinal central axis line of steel core concrete column overlap.
The intersection point place that is positioned on the steel pipe outer tube wall of steel tube concrete beam with described short steel pipes longitudinal central axis line has the steam vent that an aperture is 20 ~ 30mm.
Described steel tube concrete beam bottom is 20 ~ 30mm with the steel core concrete column end face apart from t.
A kind of concrete filled steel tube continuous girder bridge exempts to weld the job practices of support node, referring to Fig. 1, at first determine the intersection point of the steel pipe 1 of steel core concrete column longitudinal central axis line 8 and steel tube concrete beam, centered by this intersection point, open an aperture at the steel pipe 1 of steel tube concrete beam and be the steam vent of 20 ~ 30mm, and weld the short steel pipes 4 that an external diameter is d, the d value is got 0.7 ~ 0.9 times steel tube concrete beam outer diameter D; Steel pipe 2 welded top fixing steel plates 5 at steel core concrete column, described fixing steel plate 5 is separately positioned on the both sides of steel core concrete column along steel tube concrete beam longitudinal central axis line 7, each two of every sides, and the fixing steel plate 5 of every side is all take steel tube concrete beam longitudinal central axis line 7 as axis of symmetry, referring to Fig. 2, the length of fixing steel plate 5 should satisfy after steel tube concrete beam is installed the location, and its bottom and steel core concrete column end face maintain still that certain (t gets 20 ~ 30mm) apart from t; The steel pipe 2 of the vertical steel core concrete column of frame, with in the steel pipe 2 of short steel pipes 4 insertion steel core concrete columns (its buried depth h in post is not less than 2 times steel tube concrete beam outer diameter D), and the steel pipe 1 of steel tube concrete beam is shelved on the capital fixing steel plate 5, short steel pipes longitudinal central axis line and steel core concrete column longitudinal central axis line 8 are overlapped; Then pour into first concrete filled steel tube column jecket inner concrete 3, pour into again steel tube concrete beam pipe inner concrete 3; In post concrete strength reach design strength 80% after, with capital fixing steel plate 5 excision.
Steel tube concrete beam in the utility model and steel core concrete column consist of by steel pipe and the concrete that is poured in the steel pipe.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (5)
1. a concrete filled steel tube continuous girder bridge exempts to weld support node, comprise steel tube concrete beam and steel core concrete column, it is characterized in that: be welded with short steel pipes on the steel pipe outer tube wall of described steel tube concrete beam, described short steel pipes is inserted in the steel core concrete column, is filled with concrete in the described short steel pipes.
2. a kind of concrete filled steel tube continuous girder bridge according to claim 1 exempts to weld support node, it is characterized in that: the outside diameter d of described short steel pipes is 0.7 ~ 0.9 times of outer diameter of steel pipes D of steel tube concrete beam; The buried depth h that described short steel pipes is arranged in steel core concrete column is not less than 2 times of outer diameter of steel pipes D of steel tube concrete beam.
3. a kind of concrete filled steel tube continuous girder bridge according to claim 1 exempts to weld support node, it is characterized in that: the longitudinal central axis line of described short steel pipes and the longitudinal central axis line of steel core concrete column overlap.
4. a kind of concrete filled steel tube continuous girder bridge according to claim 1 exempts to weld support node, it is characterized in that: the intersection point place that is positioned on the steel pipe outer tube wall of steel tube concrete beam with described short steel pipes longitudinal central axis line has the steam vent that an aperture is 20 ~ 30mm.
5. a kind of concrete filled steel tube continuous girder bridge according to claim 1 exempts to weld support node, it is characterized in that: described steel tube concrete beam bottom is 20 ~ 30mm with the steel core concrete column end face apart from t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338209 CN202705885U (en) | 2012-07-13 | 2012-07-13 | Welding-free support node for continuous beam bridge made of concrete-filled steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338209 CN202705885U (en) | 2012-07-13 | 2012-07-13 | Welding-free support node for continuous beam bridge made of concrete-filled steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202705885U true CN202705885U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220338209 Withdrawn - After Issue CN202705885U (en) | 2012-07-13 | 2012-07-13 | Welding-free support node for continuous beam bridge made of concrete-filled steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202705885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733297A (en) * | 2012-07-13 | 2012-10-17 | 福州大学 | Steel pipe concrete continuous girder bridge with no need for welding support joints and construction method thereof |
-
2012
- 2012-07-13 CN CN 201220338209 patent/CN202705885U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733297A (en) * | 2012-07-13 | 2012-10-17 | 福州大学 | Steel pipe concrete continuous girder bridge with no need for welding support joints and construction method thereof |
| CN102733297B (en) * | 2012-07-13 | 2015-10-14 | 福州大学 | A kind of concrete filled steel tube continuous girder bridge exempts from welding support node and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |