CN2729131Y - Analog-digital bridge expansion device - Google Patents
Analog-digital bridge expansion device Download PDFInfo
- Publication number
- CN2729131Y CN2729131Y CN 200420060055 CN200420060055U CN2729131Y CN 2729131 Y CN2729131 Y CN 2729131Y CN 200420060055 CN200420060055 CN 200420060055 CN 200420060055 U CN200420060055 U CN 200420060055U CN 2729131 Y CN2729131 Y CN 2729131Y
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- bearing
- carriage
- shear spring
- plate
- supported box
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Abstract
The utility model is an analog-digital bridge expansion device consisting of two side girder irons 1 anchored at the two sides of the bridge plate seaming and many middle girder irons 2 arranged between the two side girder irons. A waterproof sealing adhesive tape 3 is provided between the side girder iron and the middle girder iron and among the middle girder irons; a plurality of supporting cross beams 5 are provided under the side girder iron and the middle girder iron. All the middle girder irons 2 are connected with the same supporting cross beam 5 through a bracket 8 connected with the middle girder iron 2. A compacting supporting base 12 and a bearing supporting base 13 are provided between the bracket 8 and the support cross beam 5; the two ends of the support cross beam 5 contact with the supporting box 4 through the compacting supporting base 9 and the bearing supporting base 10; the supporting box 4 is anchored in the bilateral concrete of the bridge plate seaming; a shearing spring 11 and a connecting plate 7 are provided between the bracket 8 and the supporting box 4 and among the brackets; the uniformly distributed mechanism is formed.
Description
Technical field:
The utility model relates to a kind of modulus formula bridge extension joint, is applicable to the bridge that displacement 240mm is above.
Background technology:
Existing modulus formula bridge extension joint generally has two kinds of form of structure, and a kind of is the multi-support type, and another kind is single support type.The multi-support type must adopt a plurality of bearing cross beams, and same middle joist steel of each bearing cross beam fixed, if any 5 middle joist steels, just 5 bearing cross beams are arranged, in fact surpass 5 bearing cross beams after, make, install and just be difficult to realize.So the bridge extension joint of multi-support type can only be applicable to displacement and be no more than the situation of 480mm.In single support type bridge extension joint in all joist steel all be supported on the same bearing cross beam, and can slide along the bearing cross beam direction, bearing cross beam is supported in the supporting box at two ends, and it is sliding to hold the crossbeam direction along ground.
The wide uniform mechanism of the seam of modulus formula bridge extension joint mostly adopts the displacement control spring, is divided into compression-type and shearing-type.
When adopting the uniform mechanism of shearing-type, shear spring is connected with central sill by T type frame, and no deformation position is arranged on stitches wide 1/2 place of regulation displacement that is, so the even distributed force of uniform mechanism is zero herein, is unfavorable for stitching wide even distribution.
The compression spring of existing modulus formula bridge extension joint or shear spring all be difficult for to be changed, and it is more difficult especially to change flexible member with side bar steel adjacent, and the maintenance of stretching device is brought great inconvenience.
The utility model content:
The purpose of this utility model provides a kind of displacement that can adapt to more than the bridge 240mm, is beneficial to the wide even distribution of seam, and is convenient to install and maintenance the modulus formula bridge extension joint that manufacturing cost is not high.
The purpose of this utility model is achieved in that
The utility model modulus formula bridge extension joint, comprise two side bar steel 1 that are anchored at bridge plate seam crossing both sides, be located at many middle joist steels 2 between these two side bar steel, between side bar steel and the middle joist steel and between the middle joist steel waterproof sealing adhesive tape 3 is arranged, some bearing cross beams 5 are arranged below side bar steel and the middle joist steel, all middle joist steels 2 respectively are connected with 5 supportings of same bearing cross beam by a connected carriage 8, compress bearing 12 and pressure-bearing bearing 13 between carriage 8 and the bearing cross beam 5, two ends of bearing cross beam 5 contact with supported box 4 by compressing bearing 9 and pressure-bearing bearing 10, supported box 4 is anchored in the concrete of bridge plate seam crossing both sides, between carriage 8 and the supported box 4 and between the carriage the adjacent shear spring that is connected 11 is arranged.
Be connected by junction plate 7 between carriage and the supported box 4, an end of this junction plate connects with the shear spring that is fixed on the carriage, and the other end is connected with shear spring on being fixed on the supported box side plate.
There is fixed case 6 both sides of supported box 4, built-in shear spring.
Stretching device of the present utility model has adopted shearing-type displacement control principle, is arranged on the stretching device seam even distributed force minimum value position wide and is zero place, has solved the null problem of 1/2 place's even distributed force at the regulation displacement.The stretching device of this utility model is simple in structure, and is easy to maintenance.
The used shear spring of the utility model is formed by the special type elastic material, and the material property homogeneous has good ageing resistace.
Description of drawings:
Fig. 1 is a modulus formula bridge extension joint general structure schematic diagram.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is the C-C sectional view of Fig. 1.
Fig. 5 is the D-D sectional view of Fig. 2.
The specific embodiment:
Modulus formula bridge extension joint as shown in Figure 1, form by institutes such as side bar steel 1, middle joist steel 2, waterproof sealing adhesive tape 3, supported box 4, bearing cross beam 5 and anchoring assemblies 14, described side bar steel is welded on the supported box 4, is fixed on the layer of concrete or adjacent abutment of bridge floor.Every 1.5m a supported box is set on the whole gentry compression apparatus, whole stretching device is anchored in the concrete.
The bearing method of bearing cross beam 5 in supported box 4 compresses bearing 9 below supported box 4 upper plates as shown in Figure 1, and it has pressure-bearing bearing 10 above lower plate, and bearing cross beam 5 is put supported box and compressed between bearing 9 and the pressure-bearing bearing 10 and form sliding bearing.
Middle joist steel 2 usefulness bolts are affixed with carriage 8, and support on the same bearing cross beam 5, its bearing method as shown in Figure 3, carriage 8 is a frame-like, compress bearing 12 below its upper plate, it has pressure-bearing bearing 13 above lower plate, bearing cross beam 5 is put carriage and compressed between bearing 12 and the pressure-bearing bearing 13 and form sliding bearing.
Shear uniform mechanism as shown in Figure 4, shear spring 11 is installed in the two sides of carriage 8 and supported box 4 respectively, an end face of shear spring is affixed with the side of carriage 8 with connector, and another end face of the shear spring 11 on adjacent two carriages is affixed with junction plate 7.Shear spring fixing on the carriage adjacent with the side bar steel is connected to by junction plate on another end face of the shear spring that is fixed on the supported box side.The two sides of supported box 4 are provided with fixed case 6, the built-in shear spring that is fixed on supported box 4 sidewalls.
When bridge floor takes place to stretch, stitch wide the change, joist steel took place to slide along bearing cross beam and make each stitch wide even variation during the elastic force of shear spring can promote by carriage.
Described side bar steel, middle joist steel, carriage, supported box, anchoring assembly and bearing cross beam etc. should meet the requirement of 5.3.1 among the transportation industry standard JT/T327 of the People's Republic of China (PRC).
Described waterproof sealing adhesive tape, compress bearing, pressure-bearing bearing and shear spring etc. and should meet the altogether requirement of 5.3.2 among state and the state transportation industry standard JT/T327 of the Chinese people.
Described shear spring is formed by the special type elastic material, requires the material property homogeneous, has good ageing resistace.
Claims (6)
1, modulus formula bridge extension joint, comprise the two side bar steel (1) that are anchored at bridge plate seam crossing both sides, be located at the many middle joist steels (2) between these two side bar steel, between side bar steel and the middle joist steel and between the middle joist steel waterproof sealing adhesive tape (3) is arranged, some bearing cross beams (5) are arranged below side bar steel and the middle joist steel, all middle joist steels (2) respectively are connected with same bearing cross beam (5) supporting by a connected carriage (8), compress bearing (12) and pressure-bearing bearing (13) between carriage (8) and the bearing cross beam (5), two ends of bearing cross beam (5) contact with supported box (4) by compressing bearing (9) and pressure-bearing bearing (10), supported box (4) is anchored in the concrete of bridge plate seam crossing both sides, and it is characterized in that has the adjacent shear spring that is connected (11) between carriage (8) and the supported box (4) and between the carriage.
2, bridge extension joint according to claim 1, it is characterized in that carriage (8) is a frame, compress below bearing (12) plate fixed thereon, pressure-bearing bearing (13) is fixed on it above lower plate, an end face of the same shear spring of its biside plate (11) is connected, shear spring (11) is a column, and the then same junction plate of its another end face (7) connects, and each junction plate (7) connects two shear springs (11) of fixedlying connected with adjacent two carriages.
3, bridge extension joint according to claim 1, it is characterized in that being connected by junction plate (7) between carriage and the supported box (4), one end of this junction plate connects with the shear spring that is fixed on the carriage, and the other end is connected with shear spring on being fixed on the supported box side plate.
4, bridge extension joint according to claim 3 is characterized in that there are fixed case (6), built-in shear spring in the both sides of supported box (4).
5, bridge extension joint according to claim 2 is characterized in that shear spring (11) and junction plate (7) are arranged in carriage (8) both sides.
6, bridge extension joint according to claim 2 is characterized in that shear spring (11) is cylindricality, and its both ends of the surface and cambered surface nut are connected, and the hole that screw passes on junction plate (7) or carriage (8) or the supported box (4) is connected with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060055 CN2729131Y (en) | 2004-07-02 | 2004-07-02 | Analog-digital bridge expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060055 CN2729131Y (en) | 2004-07-02 | 2004-07-02 | Analog-digital bridge expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2729131Y true CN2729131Y (en) | 2005-09-28 |
Family
ID=35047908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420060055 Expired - Fee Related CN2729131Y (en) | 2004-07-02 | 2004-07-02 | Analog-digital bridge expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2729131Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518037A (en) * | 2011-12-16 | 2012-06-27 | 成都市新筑路桥机械股份有限公司 | Expansion device for extra-large displacement bridge |
| CN103469727A (en) * | 2013-10-09 | 2013-12-25 | 湖南广和桥梁构件有限公司 | Bridge expansion joint trussed beam box |
| CN114232471A (en) * | 2022-01-19 | 2022-03-25 | 贵州省交通规划勘察设计研究院股份有限公司 | Assembly modular expansion device |
-
2004
- 2004-07-02 CN CN 200420060055 patent/CN2729131Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518037A (en) * | 2011-12-16 | 2012-06-27 | 成都市新筑路桥机械股份有限公司 | Expansion device for extra-large displacement bridge |
| CN102518037B (en) * | 2011-12-16 | 2014-02-12 | 成都市新筑路桥机械股份有限公司 | Expansion device for extra-large displacement bridge |
| CN103469727A (en) * | 2013-10-09 | 2013-12-25 | 湖南广和桥梁构件有限公司 | Bridge expansion joint trussed beam box |
| CN114232471A (en) * | 2022-01-19 | 2022-03-25 | 贵州省交通规划勘察设计研究院股份有限公司 | Assembly modular expansion device |
| CN114232471B (en) * | 2022-01-19 | 2024-07-30 | 贵州省交通规划勘察设计研究院股份有限公司 | Assembling modular expansion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050928 Termination date: 20130702 |