CN204000564U - Greatly across thin-walled prestressed concrete box girder - Google Patents
Greatly across thin-walled prestressed concrete box girder Download PDFInfo
- Publication number
- CN204000564U CN204000564U CN201420425018.1U CN201420425018U CN204000564U CN 204000564 U CN204000564 U CN 204000564U CN 201420425018 U CN201420425018 U CN 201420425018U CN 204000564 U CN204000564 U CN 204000564U
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- thin
- greatly
- base plate
- box girder
- top board
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 210000002435 tendon Anatomy 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 9
- 238000010008 shearing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model belongs to technical field of bridge engineering, particularly relates to one greatly across thin-walled prestressed concrete box girder.Comprise top board, base plate and two webs, described web is Wavelike steel webplate, in the longitudinal cavity surrounding at top board, base plate and two webs, be laterally equidistantly provided with multiple dividing plates, at the dual-side of top board with Cantilever Flange Slab, longitudinally be provided with respectively rope and external tendon in multiple prestressing force bodies base plate is inside and outside, described external tendon is longitudinally successively through each lateral separation plate.The utility model is greatly across thin-walled PC Box Girder Structure reasonable stress, and easy construction has improved the utilization rate of material, has improved speed of application, and energy-conserving and environment-protective, and handsome in appearance, anti-seismic performance is good, and therefore remarkable in economical benefits, is very suitable for promotion and implementation.
Description
Technical field
The utility model belongs to technical field of bridge engineering, particularly relates to one greatly across thin-walled prestressed concrete box girder.
Background technology
In prior art, the cross section internal force (bending and shearing) of prestressed concrete box girder is along with increasing across the increase in footpath, the mode of increasing section size and panel thickness that conventionally adopts large-span concrete box girder improves its rigidity of section to meet force request, so, not only increase the deadweight of case beam and construction costs, also increased the difficulty of construction simultaneously.Therefore, a kind of structure stress of research and design is reasonable, improves stock utilization, and easy construction, efficiency are high, and energy-conserving and environment-protective are again handsome in appearance, and anti-seismic performance good greatly across thin-walled prestressed concrete box girder, tool is of great significance.
Summary of the invention
The technical problems to be solved in the utility model overcomes above-mentioned the deficiencies in the prior art exactly, and provides a kind of structure stress reasonable, improves stock utilization, easy construction, efficiency are high, energy-conserving and environment-protective, handsome in appearance, and anti-seismic performance good greatly across thin-walled prestressed concrete box girder.
For solving the problems of the technologies described above, the technical solution of the utility model is:
One is greatly across thin-walled prestressed concrete box girder, comprise top board, base plate and two webs, described web is Wavelike steel webplate, in the longitudinal cavity surrounding at top board, base plate and two webs, be laterally equidistantly provided with multiple dividing plates, at the dual-side of top board with Cantilever Flange Slab, longitudinally be provided with respectively rope and external tendon in multiple prestressing force bodies base plate is inside and outside, described external tendon is longitudinally successively through each lateral separation plate.
Described Wavelike steel webplate be by multistage weld or limit portion overlap joint after form with rivet.
Between described top board, base plate and web, be fixedly connected with by connector respectively.
The thick 28cm of described top board, the thick 28～50cm of base plate, the thick 45～65cm of web.
The width of described Cantilever Flange Slab is 50～150cm.
The beneficial effect of technical solutions of the utility model is:
1, structurally, the utility model adopts Wavelike steel webplate to replace thick and heavy concrete web across thin-walled prestressed concrete box girder greatly, has alleviated the deadweight of superstructure 20～30%, thereby the engineering quantity of upper and lower part structure is reduced, and has reduced project total cost; Due to alleviating of superstructure, in the time that bridge is built in soft foundation or earthquake zone, its anti-seismic performance improves.Thereby, the utility model remarkable in economical benefits, anti-seismic performance is good.
2, structurally, the utility model concrete all concentrates on top, base plate place, and radius of gyration is almost increased to maximum value, has improved widely the structure efficiency in cross section; Concrete bending resistance when stressed and steel shearing resistance, moment of flexure and shearing are born by top, base plate and Wavelike steel webplate respectively, and the stress distribution in its web is approximately uniform figure, but not traditional triangle is conducive to give full play to material effects.Thereby, the utility model structure stress rationally, improved the utilization rate of material.
3, structurally, the utility model adopts Wavelike steel webplate inherent stress concrete box-beam structure, and beam body weight reduction, when cantilever construction, reduces sections quantity thereby can strengthen sections length, thereby can the reduction of erection time; When cantilever pouring, steel web can be used as the ingredient of Hanging Basket; When incremental launching construction, can make nose girder with web; When cast-in-place, can omit web template, thus convenient construction, and the difficulty running into while avoiding building high web concrete, saves construction cost.Thereby the utility model easy construction, has improved speed of application.
4, structurally, the utility model adopts Wavelike steel webplate to replace thick and heavy concrete web, the application of Wavelike steel webplate can be saved bridge concrete consumption, increase steel work application, this meets energy-conserving and environment-protective principle, and Wavelike steel webplate form is lively, bright-colored, can make bridge obtain stronger aesthetic feeling, also can be well and surrounding environment coordinate, be that speedway, mountain area, the good bridge type in scenic spot are selected.Thereby, the utility model energy-conserving and environment-protective, handsome in appearance.
5, to sum up, the utility model is greatly across thin-walled PC Box Girder Structure reasonable stress, and easy construction has improved the utilization rate of material, improve speed of application, and energy-conserving and environment-protective, handsome in appearance, anti-seismic performance is good, remarkable in economical benefits, therefore, is very suitable for promotion and implementation.
Brief description of the drawings
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail, wherein:
Fig. 1 is that the utility model is greatly across the structural representation of thin-walled prestressed concrete box girder;
Fig. 2 is one of large A-A sectional structure schematic diagram across thin-walled prestressed concrete box girder shown in Fig. 1;
Fig. 3 is two of the large A-A sectional structure schematic diagram across thin-walled prestressed concrete box girder shown in Fig. 1;
Fig. 4 is the utility model uses greatly state structural representation across thin-walled prestressed concrete box girder;
Sequence number in figure: 1, top board, 2, base plate, 3, web, 4, dividing plate, 5, Cantilever Flange Slab, 6, rope in body, 7, external tendon, 8, rivet, 9, bridge deck, 10, wet seam.
detailed description of the invention
Embodiment mono-:
Referring to Fig. 1, Fig. 2, in figure, the utility model is greatly across thin-walled prestressed concrete box girder, comprise top board 1, base plate 2 and two webs 3, described web is Wavelike steel webplate, is laterally equidistantly provided with multiple dividing plates 4 at top board, base plate and two webs in the longitudinal cavity surrounding, at the dual-side of top board with Cantilever Flange Slab 5, longitudinally be provided with respectively rope 6 and external tendon 7 in multiple prestressing force bodies base plate is inside and outside, described external tendon is longitudinally successively through each lateral separation plate.Described Wavelike steel webplate is to be welded by multistage.Between described top board, base plate and web, be fixedly connected with by connector respectively.The thick 28cm of described top board, the thick 28～50cm of base plate, the thick 45～65cm of web.The width of described Cantilever Flange Slab is 50～150cm.
Referring to Fig. 4, use procedure of the present utility model is roughly as follows:
Be provided with wet seam 10 or welding steel at the outward flange of the Cantilever Flange Slab of single case beam, single case beam is connected into entirety by the mode with cast-in-place wet seam or welding steel in bridge construction, then cast-in-place bridge deck 9 concrete.
Embodiment bis-:
Referring to Fig. 1, Fig. 3, the present embodiment is close with embodiment mono-structure, and in figure, vehicle indicator section represents that meaning is identical, no longer repeats at this, and its difference is: described in the present embodiment, Wavelike steel webplate 3 is by forming with rivet 8 riveted joints after multistage limit portion overlap joint.
The foregoing is only the schematic detailed description of the invention of the utility model; not in order to limit scope of the present utility model; any those skilled in the art is not departing from equivalent variations and the amendment under the prerequisite of the utility model design and principle, made, all should belong to the scope of the utility model protection.
Claims (5)
1. one kind greatly across thin-walled prestressed concrete box girder, comprise top board, base plate and two webs, it is characterized in that: described web is Wavelike steel webplate, in the longitudinal cavity surrounding at top board, base plate and two webs, be laterally equidistantly provided with multiple dividing plates, at the dual-side of top board with Cantilever Flange Slab, longitudinally be provided with respectively rope and external tendon in multiple prestressing force bodies base plate is inside and outside, described external tendon is longitudinally successively through each lateral separation plate.
2. according to claim 1 greatly across thin-walled prestressed concrete box girder, it is characterized in that: described Wavelike steel webplate be by multistage weld or limit portion overlap joint after form with rivet.
3. according to claim 1 greatly across thin-walled prestressed concrete box girder, it is characterized in that: between described top board, base plate and web, be fixedly connected with by connector respectively.
4. according to claim 1 greatly across thin-walled prestressed concrete box girder, it is characterized in that: the thick 28cm of described top board, the thick 28～50cm of base plate, the thick 45～65cm of web.
5. according to claim 1 greatly across thin-walled prestressed concrete box girder, it is characterized in that: the width of described Cantilever Flange Slab is 50～150cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420425018.1U CN204000564U (en) | 2014-07-31 | 2014-07-31 | Greatly across thin-walled prestressed concrete box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420425018.1U CN204000564U (en) | 2014-07-31 | 2014-07-31 | Greatly across thin-walled prestressed concrete box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204000564U true CN204000564U (en) | 2014-12-10 |
Family
ID=52040590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420425018.1U Expired - Lifetime CN204000564U (en) | 2014-07-31 | 2014-07-31 | Greatly across thin-walled prestressed concrete box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204000564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098100A (en) * | 2018-09-26 | 2018-12-28 | 中铁四局集团有限公司 | Web advanced installation construction method in cantilever casting of corrugated steel web continuous beam bridge |
-
2014
- 2014-07-31 CN CN201420425018.1U patent/CN204000564U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098100A (en) * | 2018-09-26 | 2018-12-28 | 中铁四局集团有限公司 | Web advanced installation construction method in cantilever casting of corrugated steel web continuous beam bridge |
| CN109098100B (en) * | 2018-09-26 | 2021-03-05 | 中铁四局集团有限公司 | Web advanced installation construction method in cantilever casting of corrugated steel web continuous beam bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Yongtao Inventor after: Guan Hanfei Inventor after: Yu Jingtao Inventor after: Wang Jiansheng Inventor before: Zhou Yongtao Inventor before: Guan Hanfei Inventor before: Yu Jingtao Inventor before: Wang Jiansheng |
|
| CB03 | Change of inventor or designer information | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |
|
| CX01 | Expiry of patent term |