CN203603020U - Highway and railway same layer large cantilever steel box beam - Google Patents
Highway and railway same layer large cantilever steel box beam Download PDFInfo
- Publication number
- CN203603020U CN203603020U CN201320751171.9U CN201320751171U CN203603020U CN 203603020 U CN203603020 U CN 203603020U CN 201320751171 U CN201320751171 U CN 201320751171U CN 203603020 U CN203603020 U CN 203603020U
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- Prior art keywords
- cantilever
- back plate
- box beam
- case
- case beam
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- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 31
- 239000010959 steel Substances 0.000 title claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 239000003351 stiffener Substances 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 20
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a highway and railway same layer large cantilever steel box beam. The steel box beam comprises a box beam top plate and a cantilever top plate. The cantilever top plate is located on the outer longitudinal side of the box beam top plate, the cantilever top plate is used for arranging a highway, the box beam top plate is used for arranging a railway, the two longitudinal sides of the lower end face of the box beam top plate are supported through bearing structures, a box beam bottom plate is arranged between the bottoms of the bearing structures, and a box type structure is formed by enclosing the box beam top plate, the bearing structures and the box beam bottom plate. The highway and railway same layer large cantilever steel box beam enables the highway and the railway to be arranged on the same layer. Compared with traditional layering arrangement, the length of an approach bridge is small, the occupied range of an overpass bridge is small, engineering investment can be saved, view is wide, a landscape is good, and therefore the highway and railway same layer large cantilever steel box beam is in a novel large-span highway and railway combined construction bridge arrangement form.
Description
Technical field
The utility model relates to bridge construction technical field, refers to that particularly a kind of public iron is with the large Steel Cantilever case beam of layer.
Background technology
At present, domestic combined Longspan Bridge all adopts layered arrangement steel truss girder, although steel truss girder technology maturation, but still there is following imperfection part:
First, public iron layered arrangement has improved highway bridge absolute altitude, has increased access bridge length, has improved accordingly construction cost;
Secondly, because joint structure, scab are more and bolt hole weakens the factors such as rod member slenderness ratio is larger, steel truss girder stock utilization is not high, and can not adopt hybrid beam form, and steel using amount is large;
Again, steel truss girder global sections height is large, and rod member is many, and air resistance coefficient is large, and bluff body cross section wind resistance is poor, on the low side at the driving wind speed threshold values of coastal typhoon prone areas train;
Finally, steel girder member bar is various, although transporting and hoisting is convenient, whole sections concatenation construction difficulty is large, and single rod member concatenation construction progress is slower, and construction precision requires high.
Tradition highway steel case beam, torsional rigidity is large, and wind resistance is good, and on-site hoisting required precision is lower slightly, and can adopt hybrid beam form, but increase deck widening after railway in the middle of the cross section, make the lateral stressed steep increasing of bridge floor, and longitudinal stress is more than needed larger, stock utilization is not high, less economical.
Utility model content
The purpose of this utility model is exactly the deficiency that will solve above-mentioned background technology, provides one to meet public iron and arranges with layer, can reach again better wind resistance, and can improve stock utilization, reduces the public iron of construction costs with the large Steel Cantilever case beam of layer.
The technical solution of the utility model is: a kind of public iron is with the large Steel Cantilever case beam of layer, it is characterized in that: it comprises case back plate and cantilever top board, described cantilever top board is positioned at longitudinal outside of case back plate, on described cantilever top board for arranging highway, on case back plate for arranging railway, longitudinal both sides, described case back plate lower surface are supported by bearing structure, and described bearing structure is provided with case beam base plate between bottom, and described case back plate, bearing structure and case beam base plate surround a box-structure.
In such scheme:
The lower surface of described case back plate is provided with the U-shaped longitudinal stiffener of multiple top boards, and the lower surface of the U-shaped longitudinal stiffener of top board is longitudinally provided with the crossbeam of multiple lateral arrangement.
Described case beam base plate upper surface is provided with the U-shaped longitudinal stiffener of multiple base plates, and the U-shaped longitudinal stiffener of described base plate upper end is provided with horizontal diaphragm, and described horizontal diaphragm is arranged between bearing structure.
Between the two ends of described horizontal diaphragm and case back plate, be provided with oblique strut.
Described bearing structure comprises the outer web and the endosternum that are provided with spacing, and described outer web and endosternum are all arranged between case beam base plate and case back plate; The end anchorage of described drag-line is between outer web and endosternum; Described outer web inner side is provided with the U-shaped longitudinal stiffener of outer web, and described endosternum inner side is provided with the U-shaped longitudinal stiffener of endosternum.
The U-shaped longitudinal stiffener of described outer web inner side is provided with vertical diaphragm, and described vertical diaphragm is arranged between case beam base plate and case back plate.
Between described bearing structure bottom and crossbeam outside, be provided with cantilever diagonal bracing.
Between described case back plate and cantilever top board, be provided with shading grid straight up.
The utility model has the advantage of:
1, the designed large Steel Cantilever case beam of the same layer of public iron of the utility model, public iron is arranged with layer, compare traditional batch deployment line road sign higher primary school, access bridge length is less, it is little that grade separation takes up an area scope, can cost saving, and broad view, view is good, is that the public iron of a kind of novel large span is built bridge arrangement form jointly;
2, railway loading is heavier, is arranged between two drag-line anchor points; Highway load is relatively light, be arranged on the cantilever top board in the longitudinal outside of case back plate, meet cantilever force requirement, and this arrangement reduces lateral stressed span, reasonable stress, each braced structures of top board below can be arranged by diaphragm and cantilever diagonal bracing, thereby saved steel using amount, reduced cost;
3, baseplate width of the present utility model is not more than the transverse width of case back plate, and with respect to the baseplate width in background technology, its narrowed width, has saved base plate steel using amount accordingly.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure elevation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The public iron of one is as shown in Figure 1 with the large Steel Cantilever case beam of layer, it comprises case back plate 16 and cantilever top board 1, cantilever top board 1 is positioned at longitudinal outside of case back plate 16, on cantilever top board 1 for arranging highway, on case back plate 16, for arranging railway, case back plate 16 longitudinal both sides, lower surface are supported by bearing structure, and the end anchorage of drag-line 14 is in bearing structure, bearing structure is provided with case beam base plate 3 between bottom, and case back plate 16, bearing structure and case beam base plate 3 surround a box-structure.This kind of design, compares traditional batch deployment line road sign higher primary school, and access bridge length is less, and it is little that grade separation takes up an area scope, can cost saving, and broad view, view is good, is that the public iron of a kind of novel large span is built bridge arrangement form jointly.And it is heavier to be of value to railway loading, be arranged between two guy anchors; Highway load is relatively light, is arranged on cantilever-cantilever top board in the longitudinal outside of case back plate, to meet cantilever force requirement.
Box-structure in the present embodiment is the large main support mechanism of Steel Cantilever case beam of the same layer of the designed public iron of the utility model, because railway loading is heavier, therefore box-structure is arranged on to railway below, to meet the load-bearing demand of railway.
In the present embodiment:
The lower surface of case back plate 16 is provided with the U-shaped longitudinal stiffener 2 of multiple top boards, and the lower surface of the U-shaped longitudinal stiffener 2 of top board is longitudinally provided with the crossbeam 9 of multiple lateral arrangement, so that the structural rigidity of case back plate 16 is strengthened.
Case beam base plate 3 upper surfaces are provided with the U-shaped longitudinal stiffener 4 of multiple base plates, and the U-shaped longitudinal stiffener of base plate 4 upper ends are provided with horizontal diaphragm 10, and horizontal diaphragm 10 is arranged between bearing structure.
Between the two ends of horizontal diaphragm 10 and case back plate 16, be provided with oblique strut 11.
Bearing structure comprises the outer web 7 and the endosternum 5 that are provided with spacing, and outer web 7 and endosternum 5 are all arranged between case beam base plate 3 and case back plate 16; The end anchorage of drag-line 14 is between outer web 7 and endosternum 5; Outer web 7 inner sides are provided with the U-shaped longitudinal stiffener 8 of outer web, strengthen with the rigidity of external web 7; Endosternum 5 inner sides are provided with the U-shaped longitudinal stiffener 6 of endosternum, so that the rigidity of endosternum 5 is strengthened.Outer web 7, endosternum 5, case beam base plate 3 and case back plate 16 surround the chamber of two small-sized longitudinal side openings.
The U-shaped longitudinal stiffener of outer web 8 inner sides are provided with vertical diaphragm 12, and vertical diaphragm 12 is arranged between case beam base plate 3 and case back plate 16.
Between bearing structure bottom and crossbeam 9 outsides, be provided with cantilever diagonal bracing 13, so that the structure on cantilever is supported.
Owing to railway being arranged between two guy anchors, highway is arranged in the longitudinally arrangement on cantilever-cantilever top board in outside of case back plate, each braced structures of top board below can be arranged by diaphragm and cantilever diagonal bracing, therefore, the horizontal diaphragm 10 in the present embodiment, oblique strut 11, vertical diaphragm 12 are selected purlin formula diaphragm, and it is little that it has steel using amount, case intrinsic permeability is good, the feature of dehumidification system less investment, thus steel using amount saved, reduce cost.
In addition, between case back plate 16 and cantilever top board 1, be provided with shading grid 15 straight up, to eliminate the impact of train light on highway bridge driving.
Between each member of the present utility model, all adopt and be welded to connect, each member manufactures large sections in factory, forms by transportation by land and water to on-the-spot rear overall segmental hoisting.
Claims (8)
1. a public iron is with the large Steel Cantilever case beam of layer, it is characterized in that: it comprises case back plate (16) and cantilever top board (1), described cantilever top board (1) is positioned at longitudinal outside of case back plate (16), described cantilever top board (1) is upper for arranging highway, case back plate (16) is upper for arranging railway, longitudinal both sides, described case back plate (16) lower surface are supported by bearing structure, described bearing structure is provided with case beam base plate (3) between bottom, and described case back plate (16), bearing structure and case beam base plate (3) surround a box-structure.
2. public iron according to claim 1 is with the large Steel Cantilever case beam of layer, it is characterized in that: the lower surface of described case back plate (16) is provided with the U-shaped longitudinal stiffener of multiple top boards (2), the lower surface of the U-shaped longitudinal stiffener of top board (2) is longitudinally provided with the crossbeam (9) of multiple lateral arrangement.
3. public iron according to claim 1 is with the large Steel Cantilever case beam of layer, it is characterized in that: described case beam base plate (3) upper surface is provided with the U-shaped longitudinal stiffener of multiple base plates (4), the U-shaped longitudinal stiffener of described base plate (4) upper end is provided with horizontal diaphragm (10), and described horizontal diaphragm (10) is arranged between bearing structure.
4. public iron according to claim 3, with the large Steel Cantilever case beam of layer, is characterized in that: between the two ends of described horizontal diaphragm (10) and case back plate (16), be provided with oblique strut (11).
5. according to the large Steel Cantilever case beam of the same layer of the public iron described in claim 1 or 3, it is characterized in that: described bearing structure comprises the outer web (7) and the endosternum (5) that are provided with spacing, described outer web (7) and endosternum (5) are all arranged between case beam base plate (3) and case back plate (16); The end anchorage of described drag-line (14) is between outer web (7) and endosternum (5); Described outer web (7) inner side is provided with the U-shaped longitudinal stiffener of outer web (8), and described endosternum (5) inner side is provided with the U-shaped longitudinal stiffener of endosternum (6).
6. public iron according to claim 5 is with the large Steel Cantilever case beam of layer, it is characterized in that: the U-shaped longitudinal stiffener of described outer web (8) inner side is provided with vertical diaphragm (12), and described vertical diaphragm (12) is arranged between case beam base plate (3) and case back plate (16).
7. according to the large Steel Cantilever case beam of the same layer of the public iron described in claim 1 or 3, it is characterized in that: between described bearing structure bottom and crossbeam (9) outside, be provided with cantilever diagonal bracing (13).
8. public iron according to claim 1, with the large Steel Cantilever case beam of layer, is characterized in that: between described case back plate (16) and cantilever top board (1), be provided with shading grid (15) straight up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751171.9U CN203603020U (en) | 2013-11-25 | 2013-11-25 | Highway and railway same layer large cantilever steel box beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320751171.9U CN203603020U (en) | 2013-11-25 | 2013-11-25 | Highway and railway same layer large cantilever steel box beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603020U true CN203603020U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320751171.9U Expired - Lifetime CN203603020U (en) | 2013-11-25 | 2013-11-25 | Highway and railway same layer large cantilever steel box beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603020U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590315B (en) * | 2013-11-25 | 2015-09-02 | 中铁第四勘察设计院集团有限公司 | Public iron is with layer great cantilever steel box-girder |
| CN106149539A (en) * | 2016-07-08 | 2016-11-23 | 中铁二院工程集团有限责任公司 | Highway-railway dual-purpose bridge staggered floor main beam section constructs |
| CN108018772A (en) * | 2017-12-19 | 2018-05-11 | 中铁二院工程集团有限责任公司 | Non-major P.E.subject flat bed main beam section constructs |
| CN108914791A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of same laminar combined bridge |
| CN110438881A (en) * | 2019-08-20 | 2019-11-12 | 中铁二院工程集团有限责任公司 | The three branch mailbox mixing girders and four rope face combined highway and metro cable-stayed bridges worn in bridge tower |
-
2013
- 2013-11-25 CN CN201320751171.9U patent/CN203603020U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590315B (en) * | 2013-11-25 | 2015-09-02 | 中铁第四勘察设计院集团有限公司 | Public iron is with layer great cantilever steel box-girder |
| CN106149539A (en) * | 2016-07-08 | 2016-11-23 | 中铁二院工程集团有限责任公司 | Highway-railway dual-purpose bridge staggered floor main beam section constructs |
| CN106149539B (en) * | 2016-07-08 | 2018-08-14 | 中铁二院工程集团有限责任公司 | The dual-purpose bridge staggered floor main beam section construction of highway-railway |
| CN108018772A (en) * | 2017-12-19 | 2018-05-11 | 中铁二院工程集团有限责任公司 | Non-major P.E.subject flat bed main beam section constructs |
| CN108914791A (en) * | 2018-07-06 | 2018-11-30 | 中铁二院工程集团有限责任公司 | A kind of same laminar combined bridge |
| CN110438881A (en) * | 2019-08-20 | 2019-11-12 | 中铁二院工程集团有限责任公司 | The three branch mailbox mixing girders and four rope face combined highway and metro cable-stayed bridges worn in bridge tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |