CN205741937U - A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure - Google Patents
A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure Download PDFInfo
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- CN205741937U CN205741937U CN201620439775.3U CN201620439775U CN205741937U CN 205741937 U CN205741937 U CN 205741937U CN 201620439775 U CN201620439775 U CN 201620439775U CN 205741937 U CN205741937 U CN 205741937U
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Abstract
This utility model belongs to science of bridge building field, it is specifically related to a kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure making Wavelike steel webplate nose girder and combination beam connect into entirety that Pre-Stressed Concrete Composite Box-Girder Bridge with Corrugated Steel Webs uses during incremental launching construction, including the I-beam of band Wavelike steel webplate, combination beam concrete roof, combination beam concrete floor；The I-beam of described band Wavelike steel webplate is along arranging continuously across footpath；Also include steel top board, steel sole plate, upper bearing plate, lower bearing plate, the interim prestressed strand of top board, the interim prestressed strand of base plate and steel anchor box.A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure that this utility model provides, avoid the rigidity sudden change near junction of PC combination beam and nose girder, ensure the seriality of transition section structure rigidity, improve the bending resistance of Guide beam structure, and ensure that combination beam is reliably connected with nose girder, to ensure construction safety by interim prestressed strand.
Description
Technical field
This utility model belongs to science of bridge building field, is specifically related to a kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure making Wavelike steel webplate nose girder and combination beam connect into entirety that Pre-Stressed Concrete Composite Box-Girder Bridge with Corrugated Steel Webs uses during incremental launching construction.
Background technology
At present, use the steel I-beam example as Wavelike steel webplate PC combination beam nose girder of band Wavelike steel webplate, and the local between steel nose girder with body combination structure has been connected and is to ensure that steel nose girder and combinative structure can the key positions of effective force.The problem that this position is belonging to steel and concrete Hybrid connections, the main beam structure of current cable-stayed bridge both domestic and external and suspension bridge is frequently with hybrid beam, employ the technology of girder steel and beams of concrete Hybrid connections the most in a large number, but the Hybrid connections of current steel and concrete does not the most occur the Hybrid connections form of corrugated web girder steel and combinative structure beam.Comparatively speaking, the Hybrid connections not only version complexity of corrugated web girder steel and combinative structure beam can be used for reference without engineering, and the Hybrid connections by other form of force rate at this position is increasingly complex.
Therefore, objectively need the rational structure form researching and developing a kind of corrugated web steel nose girder with the joint portion of combination beam, by arranging steel roof and floor between lower flange on the nose girder Wavelike steel webplate I-beam of two, left and right, avoid the rigidity sudden change near junction of combination beam and nose girder, improve the bending resistance of structure.By arranging upper and lower bearing plate on steel reinforced concrete faying face and welding steel anchor box, steel nose girder and combination beam can be made to connect into entirety with stretch-draw prestressing force steel bundle.The development tool of incremental launching construction technique in bridge structure is of great significance.
Summary of the invention
The purpose of this utility model is to provide a kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure making Wavelike steel webplate nose girder and combination beam connect into entirety, avoid the rigidity sudden change near junction of PC combination beam and nose girder, ensure the seriality of transition section structure rigidity, improve the bending resistance of Guide beam structure, and ensure that combination beam is reliably connected with nose girder, to ensure construction safety by interim prestressed strand.
In order to achieve the above object, this utility model is by the following technical solutions:
A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure, including the I-beam of band Wavelike steel webplate, combination beam concrete roof, combination beam concrete floor；The I-beam of described band Wavelike steel webplate is along arranging continuously across footpath；Also include steel top board, steel sole plate, upper bearing plate, lower bearing plate, the interim prestressed strand of top board, the interim prestressed strand of base plate and steel anchor box；Between the top flange of the I-beam that described steel top board is fixedly connected on two panels band Wavelike steel webplate, between the lower flange of the I-beam that steel sole plate is fixedly connected on two panels band Wavelike steel webplate；Described steel top board, steel sole plate connect into entirety by weldering nail connector with combination beam concrete roof, combination beam concrete floor respectively；Described upper bearing plate is fixedly connected on the steel top board at steel reinforced concrete faying face, and shape matches with the end face of combination beam concrete roof, and described lower bearing plate is fixedly connected on the steel sole plate at steel reinforced concrete faying face, and shape matches with the end face of combination beam concrete floor；Described steel anchor box is fixedly connected on lower bearing plate to anchor the interim prestressed strand of base plate, and the interim prestressed strand end anchorage of described top board is on upper bearing plate.
Further, the I-beam of described band Wavelike steel webplate connects into entirety by weldering nail connector with combination beam concrete roof and combination beam concrete floor in combination beam section, is fixedly connected into nose girder main body in steel nose girder section and upper bottom lateral bracing, vertical stull.
Further, described steel top board and steel sole plate have been fixedly connected with vertically and horizontally ribbed stiffener.
Further, described upper bearing plate is fixedly connected with steel anchor box.
In said structure, the connected mode between steel construction plate is welding.
Owing to have employed technique scheme, this utility model has a following positive beneficial effect:
1. use the I-beam of band Wavelike steel webplate along arranging continuously across footpath, entirety is connected into by weldering nail connector with combination beam concrete roof and combination beam concrete floor in combination beam section, it is fixedly connected into nose girder main body, it is ensured that the globality of Wavelike steel webplate and seriality in steel nose girder section and upper bottom lateral bracing, vertical stull.
2. use the mode welding steel roof and floor on the two panels band Wavelike steel webplate I-beam of left and right between lower flange, the rigidity sudden change near junction of PC combination beam and nose girder can be avoided, improve nose girder stress raisers phenomenon.
3. use on steel roof and floor, weld bearing plate and steel anchor box, it is simple to stretch-draw and the interim prestressed strand of anchoring, so that nose girder and combination beam are linked to be overall common stress.
4. steel top board, steel sole plate after pushing tow puts in place, need not be cut off, can as pouring combination beam concrete roof, the bed die of combination beam concrete floor uses, not only save material but also accelerate speed of application, and at the margin of safety becoming the bridge stage stiff skeleton as concrete roof and floor to increase structure.
Accompanying drawing explanation
Fig. 1 is schematic side view of the present utility model；
Fig. 2 is schematic top plan view of the present utility model；
Fig. 3 is elevational schematic view of the present utility model；
Fig. 4 is front elevational schematic of the present utility model.
In figure, the implication representated by sequence number is: 1. the I-beam of band Wavelike steel webplate, 2. combination beam concrete roof, 3. combination beam concrete floor, the 4. interim prestressed strand of top board, 5. the interim prestressed strand of base plate, 6. steel top board, 7. steel sole plate, 8. go up bearing plate, 9. descend bearing plate, 10. steel anchor box, 11. weldering nail connectors, 12. steel reinforced concrete faying faces.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment one: see shown in Fig. 1 to Fig. 4, a kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure, including I-beam 1, combination beam concrete roof 2, combination beam concrete floor 3, steel top board 6, steel sole plate 7, upper bearing plate 8, lower bearing plate 9, the interim prestressed strand of top board 4, the interim prestressed strand of base plate 5 and the steel anchor box 10 of band Wavelike steel webplate；Between the top flange of the I-beam 1 that described steel top board 6 is welded on two panels band Wavelike steel webplate, between the lower flange of the I-beam 1 that steel sole plate 7 is welded on two panels band Wavelike steel webplate；Described steel top board 6, steel sole plate 7 connect into entirety by weldering nail connector 11 with combination beam concrete roof 2, combination beam concrete floor 3 respectively；Described upper bearing plate 8 is welded on the steel top board 6 at steel reinforced concrete faying face 12, shape matches with the end face of combination beam concrete roof 2, described lower bearing plate 9 is welded on the steel sole plate 7 at steel reinforced concrete faying face 12, and shape matches with the end face of combination beam concrete floor 3；Described steel anchor box 10 is welded on lower bearing plate 9 to anchor the interim prestressed strand of base plate 5, and top board interim prestressed strand 4 end anchorage, on upper bearing plate 8, also can be welded with steel anchor box 10 according to practical situation on upper bearing plate 8.
The I-beam 1 of described band Wavelike steel webplate is arranged continuously along across footpath, entirety is connected into by weldering nail connector 11 with combination beam concrete roof 2 and combination beam concrete floor 3 in combination beam section, being fixedly connected into nose girder main body in steel nose girder section and upper bottom lateral bracing, vertical stull, web can use different bellows-shaped.
All it is welded with vertically and horizontally ribbed stiffener on described steel top board 6 and steel sole plate 7 and improves rigidity and stress performance.Steel top board 6, steel sole plate 7 need not cut off after pushing tow puts in place, and as pouring combination beam concrete roof 2, the bed die of combination beam concrete floor 3 uses, and Cheng Qiaohou is equivalent to stiff skeleton and improves the bending resistance of structure.
The erection method of steel top board 6 and steel sole plate 7 is as follows: first weld vertically and horizontally ribbed stiffener on a block plate, and longitudinal stiffener is continuous steel plate, crosses welding hole through transverse stiffener and arranges.Then weld bearing plate 8 on the steel top board 6 at steel reinforced concrete faying face 12, and near combination beam section side welding some welderings nail connector 11, the assembly of steel top board 6 can be completed.Use same way can splice steel sole plate 7, but steel anchor box 10 need to be welded on lower bearing plate 9.
Installation and the using method of steel reinforced concrete joint portion are as follows: the I-beam 1 of lifting two panels band Wavelike steel webplate, respectively steel top board 6 and steel sole plate 7 are welded with the upper lower flange of the I-beam 1 of band Wavelike steel webplate, can complete and the connection of nose girder section, then carry out upper bottom lateral bracing, the assembly of vertical stull i.e. can be assembled into complete Guide beam structure.Then formwork erection pours combination beam concrete roof 2 and combination beam concrete floor 3, following closely connector 11 by the weldering on lower flange on the I-beam 1 of band Wavelike steel webplate and steel top board 6, steel sole plate 7 makes joint portion structure and combination beam form entirety, treat that concrete reaches the age post-stretching interim prestressed strand of top board 4, the interim prestressed strand of base plate 5 can make nose girder and combination beam be reliably connected, and carry out incremental launching construction.Pushing tow put in place after using steel top board 6, steel sole plate 7 as pouring combination beam concrete roof 2, the bed die of combination beam concrete floor 3 uses.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply this utility model.These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour.Therefore, this utility model is not limited to embodiment here, and those skilled in the art should be within protection domain of the present utility model according to announcement of the present utility model, the improvement made without departing from this utility model category and amendment.
Claims (5)
1. a Wavelike steel webplate nose girder steel reinforced concrete joint portion structure, including the I-beam of band Wavelike steel webplate, combination beam concrete roof, combination beam concrete floor；The I-beam of described band Wavelike steel webplate is along arranging continuously across footpath；It is characterized in that: also include steel top board, steel sole plate, upper bearing plate, lower bearing plate, the interim prestressed strand of top board, the interim prestressed strand of base plate and steel anchor box；Between the top flange of the I-beam that described steel top board is fixedly connected on two panels band Wavelike steel webplate, between the lower flange of the I-beam that steel sole plate is fixedly connected on two panels band Wavelike steel webplate；Described steel top board, steel sole plate connect into entirety by weldering nail connector with combination beam concrete roof, combination beam concrete floor respectively；Described upper bearing plate is fixedly connected on the steel top board at steel reinforced concrete faying face, and shape matches with the end face of combination beam concrete roof, and described lower bearing plate is fixedly connected on the steel sole plate at steel reinforced concrete faying face, and shape matches with the end face of combination beam concrete floor；Described steel anchor box is fixedly connected on lower bearing plate to anchor the interim prestressed strand of base plate, and the interim prestressed strand end anchorage of described top board is on upper bearing plate.
A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion the most according to claim 1 structure, it is characterized in that: the I-beam of described band Wavelike steel webplate connects into entirety by weldering nail connector with combination beam concrete roof and combination beam concrete floor in combination beam section, is fixedly connected into nose girder main body in steel nose girder section and upper bottom lateral bracing, vertical stull.
A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion the most according to claim 1 structure, it is characterised in that: it is fixedly connected with vertically and horizontally ribbed stiffener on described steel top board and steel sole plate.
A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion the most according to claim 1 structure, it is characterised in that: it is fixedly connected with steel anchor box on described upper bearing plate.
5. according to a kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure according to any one of claim 1,2,3,4, it is characterised in that: the connected mode between steel construction plate is welding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620439775.3U CN205741937U (en) | 2016-05-16 | 2016-05-16 | A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure |
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| CN201620439775.3U CN205741937U (en) | 2016-05-16 | 2016-05-16 | A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure |
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| CN205741937U true CN205741937U (en) | 2016-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067202A (en) * | 2019-04-15 | 2019-07-30 | 中铁广州工程局集团有限公司 | A kind of steel nose girder and trough girder connection method |
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2016
- 2016-05-16 CN CN201620439775.3U patent/CN205741937U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067202A (en) * | 2019-04-15 | 2019-07-30 | 中铁广州工程局集团有限公司 | A kind of steel nose girder and trough girder connection method |
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