CN203603030U - Steel box truss beam - Google Patents
Steel box truss beam Download PDFInfo
- Publication number
- CN203603030U CN203603030U CN201320749559.5U CN201320749559U CN203603030U CN 203603030 U CN203603030 U CN 203603030U CN 201320749559 U CN201320749559 U CN 201320749559U CN 203603030 U CN203603030 U CN 203603030U
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- Prior art keywords
- steel case
- steel box
- beams
- steel
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- Expired - Lifetime
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 238000010276 construction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model belongs to the technical field of bridges, and particularly relates to a steel box truss beam. The steel box truss beam comprises an upper layer and a lower layer. The upper layer is of a truss structure, and the lower layer of a steel box structure. The truss structure comprises upper longitudinal beams, upper beams and supporting rods. The steel box structure comprises two steel box beams connected through a lower beam, the upper beams are arranged on the steel box beams, the two ends of the upper beams are connected with two corresponding upper longitudinal beams arranged on the steel box beams, and the upper ends and the lower ends of the supporting rods are connected with the upper longitudinal beams and the steel box beams respectively. The steel box truss beam is composed of the upper layer and the lower layer. The upper layer is of the truss structure, and the lower layer of the steel box structure. The structures are low in height, so that materials are saved, and the steel box truss beam can be suitable for double-layer vertical traffic.
Description
Technical field
The utility model belongs to bridge technology field, is specifically related to a kind of steel case trusses.
Background technology
The common beam structure form of large span road-cum-rail bridge has steel truss girder and steel case beam at present.The major advantage of steel truss girder is to be applicable to upper and lower layer double-layer traffic, and ventilative performance is good, and single rod member is little, and construction is set up conveniently, and major defect is that steel using amount is large, and member is many, and structure height is higher, maintenance difficulty.The major advantage of steel case beam is that overall bending resistance, torsional rigidity are better, and steel using amount is little, and structure height is lower, and maintenance is convenient, and major defect is to be not suitable for upper and lower layer double-layer traffic.
Summary of the invention
The purpose of this utility model is exactly the deficiency existing in order to solve above-mentioned background technology, and the steel case trusses that a kind of structure height is low, can be applicable to Dual-layer traffic is provided.
The technical solution adopted in the utility model is: a kind of steel case trusses, comprise two-layerly up and down, and described upper strata is trussed construction, lower floor is steel box structure; Described trussed construction comprises longeron, top rail and support bar, described steel box structure comprises two steel case beams, between two steel case beams, connected by lower transverse beam, described top rail is arranged on steel case beam top, two the upper longerons connections corresponding with being arranged on steel case beam top respectively of described top rail two ends, the upper and lower two ends of described support bar are connected with upper longeron and steel case beam respectively.
Further, described support bar comprises even spaced montant, and the upper and lower two ends of described montant are connected with upper longeron and steel case beam respectively; Between described adjacent two montants, be provided with brace, the upper and lower two ends of described brace are connected with the top and bottom of adjacent two montants respectively, the incline direction difference of described adjacent two braces.
Further, described lower transverse beam comprises spaced lower main beam and next crossbeam, between described adjacent twice main beams, is provided with two next crossbeams, and described lower main beam is box-structure, and described next crossbeam is work type structure.
Steel case trusses of the present utility model upper strata is trussed construction, lower floor is steel box structure, compared with existing steel truss girder, because lower chord is replaced by steel case beam, lateral stiffness increases, under wind action, the lateral deformation of girder is less, wind resistance is good, and antitorque moment of inertia is also larger, and anti-torsion ability is corresponding stronger; Railway is the middle part at steel case trusses in lateral arrangement, and because crossbeam is not established on upper strata, steel case trusses middle part, railway clearance is not subject to the impact of crossbeam, can reduce depth of beam, saves material; Compared with existing steel case beam, on steel case beam, set up steel purlin structure, overcome the defect that steel case beam can only be arranged one deck bridge floor, can adapt to levels double-layer traffic.
Accompanying drawing explanation
Fig. 1 is the utility model cross-sectional drawing.
Fig. 2 is the utility model lateral view.
Fig. 3 is the utility model trussed construction half plan.
Fig. 4 is the utility model steel box structure half plan.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, is convenient to be well understood to the utility model, but they do not form and limit the utility model.
As Figure 1-4, the utility model comprises two-layer up and down, and lower floor is steel box structure, and upper strata is trussed construction, described trussed construction comprises longeron 1, top rail 2 and support bar 3, and described steel box structure comprises lower transverse beam 4 and is positioned at two steel case beams 5 of lower transverse beam 4 both sides.The bottom of steel box structure is circular arc, and beautiful design has good aeroperformance.
Described top rail 2 is arranged on steel case beam 5 tops, described top rail 2 two ends respectively be arranged on the upper longerons 1 in corresponding two, steel case beam 5 tops and connect, described support bar is connected with upper longeron 1 and steel case beam 5 respectively at two ends Shang Xia 3.Described support bar 3 comprises even spaced montant 31, and described montant is connected with upper longeron 1 and steel case beam 3 respectively at two ends Shang Xia 31; Between described adjacent two montants 31, be provided with brace 32, described brace is connected with the top and bottom of adjacent two montants 31 respectively at two ends Shang Xia 32, the incline direction difference of described adjacent two braces 32.
Described lower transverse beam 4 comprises spaced lower main beam 41 and next crossbeam 42, between described adjacent twice main beams 41, is provided with two next crossbeams 42, and described lower main beam 41 is box-structure, and described next crossbeam 42 is work type structure.
The utility model substructure is connected by crossbeam by two steel case beams, forms separated steel box structure, and the support bar of upper strata truss is connected with lower floor steel case beam by joint structure, formation steel case trusses.Levels highway bridge is orthotropic plate Steel Bridge Deck, and railway deck is concrete PI shape plate, is connected with lower transverse beam top board by WELDING STUDS, suspension centre is set outside separated steel case for hanging hoist cable on coxostermum.
The content not being described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (3)
1. a steel case trusses, is characterized in that: comprise two-layerly up and down, described upper strata is trussed construction, and lower floor is steel box structure; Described trussed construction comprises longeron (1), top rail (2) and support bar (3), described steel box structure comprises two steel case beams (5), between two steel case beams (5), connected by lower transverse beam (4), described top rail (2) is arranged on steel case beam (5) top, described top rail (2) two ends respectively two upper longerons (1) corresponding with being arranged on steel case beam top connect, and described support bar (3) is connected with upper longeron (1) and steel case beam (5) respectively at two ends up and down.
2. steel case trusses according to claim 1, it is characterized in that: described support bar (3) comprises even spaced montant (31), the upper and lower two ends of described montant (31) are connected with upper longeron (1) and steel case beam (5) respectively; Between described adjacent two montants (31), be provided with brace (32), the upper and lower two ends of described brace (32) are connected with the top and bottom of adjacent two montants (31) respectively, the incline direction difference of described adjacent two braces (32).
3. steel case trusses according to claim 1, it is characterized in that: described lower transverse beam (4) comprises spaced lower main beam (41) and next crossbeam (42), between described adjacent twice main beams (41), be provided with two next crossbeams (42), described lower main beam is box-structure, and described next crossbeam is work type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320749559.5U CN203603030U (en) | 2013-11-25 | 2013-11-25 | Steel box truss beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320749559.5U CN203603030U (en) | 2013-11-25 | 2013-11-25 | Steel box truss beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603030U true CN203603030U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320749559.5U Expired - Lifetime CN203603030U (en) | 2013-11-25 | 2013-11-25 | Steel box truss beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603030U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912004A (en) * | 2015-06-25 | 2015-09-16 | 中铁第四勘察设计院集团有限公司 | Hold rail-type track transportation bridge evacuation maintenance platform |
| CN107059635A (en) * | 2017-04-28 | 2017-08-18 | 武汉冶钢结构有限责任公司 | The method of High-strength bolt hole punching rate between guarantee steel box girder bridge section |
| CN109056494A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of ultra-wide cross-sectional configuration suitable for double track railway deck type steel truss girder |
| CN111636287A (en) * | 2020-05-09 | 2020-09-08 | 中铁大桥勘测设计院集团有限公司 | Split type circular-arc-bottom steel box girder |
| WO2021018119A1 (en) * | 2019-07-31 | 2021-02-04 | 中铁二院工程集团有限责任公司 | Combined road-rail box-truss girder bridge section |
-
2013
- 2013-11-25 CN CN201320749559.5U patent/CN203603030U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912004A (en) * | 2015-06-25 | 2015-09-16 | 中铁第四勘察设计院集团有限公司 | Hold rail-type track transportation bridge evacuation maintenance platform |
| CN104912004B (en) * | 2015-06-25 | 2017-03-22 | 中铁第四勘察设计院集团有限公司 | Hold rail-type track transportation bridge evacuation maintenance platform |
| CN107059635A (en) * | 2017-04-28 | 2017-08-18 | 武汉冶钢结构有限责任公司 | The method of High-strength bolt hole punching rate between guarantee steel box girder bridge section |
| CN107059635B (en) * | 2017-04-28 | 2019-01-04 | 武汉一冶钢结构有限责任公司 | The method of High-strength bolt hole punching rate between guarantee steel box girder bridge segment |
| CN109056494A (en) * | 2018-09-25 | 2018-12-21 | 中铁二院工程集团有限责任公司 | A kind of ultra-wide cross-sectional configuration suitable for double track railway deck type steel truss girder |
| WO2021018119A1 (en) * | 2019-07-31 | 2021-02-04 | 中铁二院工程集团有限责任公司 | Combined road-rail box-truss girder bridge section |
| CN111636287A (en) * | 2020-05-09 | 2020-09-08 | 中铁大桥勘测设计院集团有限公司 | Split type circular-arc-bottom steel box girder |
| CN111636287B (en) * | 2020-05-09 | 2021-12-14 | 中铁大桥勘测设计院集团有限公司 | Split type circular-arc-bottom steel box girder |
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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 |