CN203403357U - Expansion joints of railway steel truss girder bridge - Google Patents
Expansion joints of railway steel truss girder bridge Download PDFInfo
- Publication number
- CN203403357U CN203403357U CN201320413454.2U CN201320413454U CN203403357U CN 203403357 U CN203403357 U CN 203403357U CN 201320413454 U CN201320413454 U CN 201320413454U CN 203403357 U CN203403357 U CN 203403357U
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- steel truss
- truss girder
- wall
- shrinkage joint
- bridge
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Abstract
The utility model relates to the field of bridge engineering, in particular to expansion joints of a railway steel truss girder bridge. The expansion joints comprise inside-wall expansion joints and outside-wall expansion joints. A main structure of each inside-wall expansion joint and a main structure of each outside-wall expansion joint respectively comprise strip-type metal sections and an elastic sealing tape, wherein the metal sections are fixed in gaps at the ends of the steel truss girder bridge in pair, and the two sides of the elastic sealing tapes are respectively embedded in the metal sections. The two ends of the main structure of each inside-wall expansion joint are respectively buckled with the ends of the main structure of the corresponding outside-wall expansion joint. Due to the fact that the ends of the inside-wall expansion joints are buckled with the ends of the outside-wall expansion joints, the gaps at the ends of the railway steel truss girder bridge in the width direction are completely covered, so that comprehensive water resistance of the bridge deck of the railway steel truss girder bridge is achieved, and rain water on the outer side of a wall is prevented from flowing to the bridge ends along the bridge deck outside the wall and polluting the inner surfaces and supports at the bridge ends. Consequently, the durability of the railway steel truss girder bridge is improved and traffic safety is guaranteed.
Description
Technical field
The utility model relates to bridge engineering field, relates in particular to a kind of Railway Steel Truss Girder Bridges shrinkage joint.
Background technology
Railroad bridge shrinkage joint is the important link between railroad bridge end, and to bridge end, flexible and water resistance plays an important role, and its quality and water resistance will directly affect the durability of bed rearrangement bridge.Because the life requirement of railroad bridge is high, between beam-ends, gap must adopt the waterproof expansion joint of reliable durable, protection beam body and bridge substructure.The conventional shrinkage joint of using on China railways bridge mainly contains two kinds: the TSSF and the rubber fastening band that is applicable to T-shaped beam that are applicable to box beam.Steel truss girder is used open bridge floors structure in the past, does not establish shrinkage joint on bridge, flourish along with China railways, and open bridge floors form can not meet the strict demand of current rail track, the substitute is the tiny fragments of stone, coal, etc., ballastless track system.The shrinkage joint of using on steel truss girder bridge bridge floor is at present all directly to utilize shrinkage joint to arrange within the walls or in protecting wall at the gear tiny fragments of stone, coal, etc., to reach the object of the anti-leak-stopping tiny fragments of stone, coal, etc. and rain leakage.Owing to only arranging within the walls or in protecting wall at the gear tiny fragments of stone, coal, etc., the part of keeping off outside Zha Qiang or outside protecting wall cannot be isolated bridge floor ponding, and a large amount of rainwater bridge floors outside wall trickle to beam-ends, pollute beam-ends inner surface and bearing, and the durability of steel structure bridge is caused to adverse effect.When steel truss girder bridge adopts three main truss structure, the situation of middle purlin is particularly severe, and both sides, middle purlin circuit cannot be discharged near the ponding of middle purlin, and in middle purlin, place collects and flow to beam-ends along middle purlin, has a strong impact on the durability of beam body and bridge substructure.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is to provide a kind of Railway Steel Truss Girder Bridges shrinkage joint, solves the part within the walls that existing shrinkage joint only covers steel truss girder bridge bridge floor, can not realize the problem of comprehensive waterproof.
(2) technical scheme
For reaching above-mentioned purpose, the utility model provides a kind of Railway Steel Truss Girder Bridges shrinkage joint, comprise shrinkage joint and wall external extension seam within the walls, the agent structure of the agent structure at described shrinkage joint within the walls and wall external extension seam all comprises respectively the elastic packing band that the paired shape that is fixed on the strip in steel truss girder bridge beam-ends gap and both sides embed respectively described shape, and the two ends of the agent structure at described shrinkage joint within the walls fasten with the end of the agent structure of described wall external extension seam respectively.
Preferably, the shape bottom of described wall external extension seam is provided with substrate, and the shape of described wall external extension seam is fixed on steel truss girder base plate by described substrate.
Preferably, described shrinkage joint within the walls also comprises the gear tiny fragments of stone, coal, etc. cover plate being covered on shape and elastic packing band, and a side of described gear tiny fragments of stone, coal, etc. cover plate is fixed on the beam-ends of steel truss girder bridge by setting element.
Preferably, on the shape at described shrinkage joint within the walls, be positioned at body of wall inside wall place be provided with body of wall laminating for blocking the gear tiny fragments of stone, coal, etc. side plate in body of wall gap.
Preferably, described shape is aluminium alloy extrusions or weathering steel section bar.
Preferably, described elastic packing band is rubber seal tape.
(3) beneficial effect
The Railway Steel Truss Girder Bridges shrinkage joint that the utility model adopts technique scheme to provide, the shrinkage joint within the walls mutually fastening by end and wall external extension seam cover the beam-ends gap of Railway Steel Truss Girder Bridges width comprehensively, realize comprehensive waterproof of Railway Steel Truss Girder Bridges bridge floor, the rainwater bridge floor outside wall that prevents wall outer side trickles and pollutes beam-ends inner surface and bearing to beam-ends, thereby improve the durability of Railway Steel Truss Girder Bridges, guarantee traffic safety.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the arrangement at the utility model Railway Steel Truss Girder Bridges shrinkage joint;
Fig. 2 is the A-A sectional view at shrinkage joint within the walls of the present utility model;
Fig. 3 is the B-B sectional view of wall external extension seam of the present utility model;
Fig. 4 is the top view of middle main truss wall external extension seam of the present utility model.
Wherein, 1: limit main truss wall external extension seam; 2: shrinkage joint within the walls; 3: middle main truss wall external extension seam; 4: limit main truss; 5: middle main truss; 6: body of wall; 7: rubber seal tape within the walls; 8: gear tiny fragments of stone, coal, etc. cover plate; 9: spacer bars; 10: positioning steel tube; 11: back built-in fitting; 12: the first bolts; 13: wall outer rubber band; 14: the outer aluminium alloy extrusions of wall; 15: the second bolts; 16: steel truss girder base plate; 17: gear tiny fragments of stone, coal, etc. side plate; 18: middle main truss gusset plate; 19: limit main truss gusset plate; 20: aluminium alloy extrusions within the walls.
The specific embodiment
Below in conjunction with drawings and Examples, Railway Steel Truss Girder Bridges of the present utility model shrinkage joint is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Railway Steel Truss Girder Bridges comprises that more piece is erected at the steel truss girder on bridge pier bearing pad.Every joint steel truss girder comprises the two or two steel work main trusses that are parallel to each other above, and main couple is located on the bearing of bridge pier, above main truss, is provided with steel truss girder base plate, and the steel truss girder base plate between two adjacent main trusses is provided with the twice body of wall parallel with main truss.There is this twice body of wall on tiny fragments of stone, coal, etc. Railway Steel Truss Girder Bridges to be referred to as to keep off Zha Qiang, without this twice body of wall on tiny fragments of stone, coal, etc. Railway Steel Truss Girder Bridges, be referred to as protecting wall.The beam-ends of Railway Steel Truss Girder Bridges (is the end of steel truss girder, or also can think the end of main truss) between there is gap, corresponding body of wall disconnects at railroad bridge end place and forms gap with it, and steel truss girder base plate disconnects and forms gap at the beam-ends place of Railway Steel Truss Girder Bridges.Position between the parallel body of wall of twice, within the walls, is covered with way of concrete foundations or concrete box girder on steel truss girder base plate within the walls, on way of concrete foundations or concrete box girder, is equipped with Crane Rail, and vehicle forward direction is parallel with main truss.For being called outside wall, have the main truss gusset plate of setting with the opposite side of corresponding within the walls body of wall on the steel truss girder base plate outside wall, main truss gusset plate is fixed for the reinforcement of main truss and main truss superstructure.
The agent structure at shrinkage joint comprises the paired aluminium alloy extrusions that is fixedly embedded the strip at place, gap between Railway Steel Truss Girder Bridges beam-ends, and comprise and embedding in aluminium alloy extrusions for connecting the rubber seal tape of two aluminium alloy extrusions, shrinkage joint also comprises for aluminium alloy extrusions being fixed on to the fastening devices etc. of Railway Steel Truss Girder Bridges beam-ends in addition.The length direction of aluminium alloy extrusions is parallel to beam-ends gap direction, and on aluminium alloy extrusions, has for the groove of rubber seal tape is installed, and the opening of two aluminium alloy extrusions upper grooves is relative.Aluminium alloy extrusions is herein used for fixedly rubber seal tape, can also replace aluminium alloy extrusions with shapes such as weathering steel section bars; Rubber seal tape, for adapting to the variation in steel truss girder bridge beam-ends gap, can replace rubber seal tape with elastic packing bands such as Steel Bellows, and Steel Bellows covers the gap of beam-ends and can stretch along with the size in gap.
The railway three main truss steel truss girder bridges of take are below example, and Railway Steel Truss Girder Bridges of the present utility model shrinkage joint is elaborated.As shown in Figure 1, the main truss of every joint steel truss girder of railway three main truss steel truss girder bridges comprises a middle main truss 5 and two limit main trusses 4, and middle main truss 5 and limit main truss 4 are provided with steel truss girder base plate 16.The rail track in Fig. 1 left side of take describes as example, between the upper main truss 5 of steel truss girder base plate 16 and limit main truss 4, be provided with the twice body of wall parallel with main truss 6, between body of wall 6, namely on steel truss girder base plate 16 within the walls, be equipped with way of concrete foundations, in way of concrete foundations, be equipped with Crane Rail.There is gap at the beam-ends of steel truss girder bridge in body of wall 6, steel truss girder base plate 16 and way of concrete foundations, for shrinkage joint is installed.Shrinkage joint is to prevent that steel truss girder bridge is because climate temperature changes (heat rises, shrinkage), the build joint that makes bridge generation crack or destruction and arrange along bridge width direction, shrinkage joint adapts to the variation in steel truss girder bridge beam-ends gap, and prevents that rainwater from trickling and polluting beam-ends inner surface and bearing to beam-ends along bridge floor.
Concrete, shrinkage joint between body of wall 6 is shrinkage joint 2 within the walls, as shown in Figure 2, the aluminium alloy extrusions within the walls 20 that shrinkage joint 2 comprises paired strip within the walls with embed within the walls aluminium alloy extrusions 20 in for being connected two rubber seal tapes within the walls 7 of aluminium alloy extrusions 20 within the walls, aluminium alloy extrusions 20 has groove within the walls, two the opening of aluminium alloy extrusions 20 upper grooves is relative within the walls, and two long limits of banded rubber seal tape within the walls 7 embed in grooves.Shrinkage joint 2 is installed in beam-ends gap within the walls, thereby covers beam-ends gap within the walls, realizes bridge floor beam-ends waterproof within the walls.Aluminium alloy extrusions 20 is fixed on steel truss girder bridge beam-ends by the first bolt 12 and is embedded on the back built-in fitting 11 in way of concrete foundations within the walls.
Shrinkage joint 2 also comprises and is covered in aluminium alloy extrusions 20 within the walls and the gear tiny fragments of stone, coal, etc. cover plate 8 on rubber seal tape 7 within the walls within the walls, one side of gear tiny fragments of stone, coal, etc. cover plate 8 is fixed on the back built-in fitting 11 of steel truss girder bridge beam-ends by setting element, wherein setting element comprises positioning steel tube 10 and spacer bars 9, positioning steel tube 10 and 11 welding of back built-in fitting, insert in positioning steel tube 10 spacer bars 9 one end, and spacer bars 9 other ends are rotationally connected with a side of gear tiny fragments of stone, coal, etc. cover plate 8, making to keep off tiny fragments of stone, coal, etc. cover plate 8 can open and expose aluminium alloy extrusions 20 and within the walls rubber seal tape 7 within the walls along spacer bars 9 one sideway swivels.After shrinkage joint 2 installations within the walls, gear tiny fragments of stone, coal, etc. cover plate 8 is in covering aluminium alloy extrusions 20 and the within the walls closed condition of rubber seal tape 7 within the walls, constructor is layed in the tiny fragments of stone, coal, etc. in way of concrete foundations, can prevent that the tiny fragments of stone, coal, etc. from entering within the walls in shrinkage joint 2 and destroy rubber seal tape 7 within the walls; When needs are when overhaul at shrinkage joint 2 within the walls, can open gear tiny fragments of stone, coal, etc. cover plate 8, check and repair shrinkage joint 2 within the walls.On the aluminium alloy extrusions within the walls 20 at shrinkage joint 2, be positioned within the walls body of wall 6 inside wall places be provided with body of wall 6 laminating for blocking the gear tiny fragments of stone, coal, etc. side plate 17 in body of wall 6 gaps, can prevent that the tiny fragments of stone, coal, etc. is within the walls leaked to the outer part of wall.
In addition, as shown in Figure 3, wall external extension seam comprises the outer aluminium alloy extrusions 14 of the wall of paired strip and embeds the outer aluminium alloy extrusions 14 of wall interior for being connected the wall outer rubber band 13 of the outer aluminium alloy extrusions 14 of two walls, the outer aluminium alloy extrusions 14 of wall has groove, the opening of two outer aluminium alloy extrusions 14 upper grooves of wall is relative, and two long limits of banded wall outer rubber band 13 embed in groove.Wall external extension seam is installed in beam-ends gap, thereby covers the beam-ends gap outside wall, realize the beam-ends waterproof outside bridge floor wall.Wherein, within the walls the agent structure at shrinkage joint 2 within the walls aluminium alloy extrusions 20 and within the walls the agent structure of the two ends of rubber seal tape 7 and wall external extension seam be that the end of the outer aluminium alloy extrusions 14 of wall and wall outer rubber band 13 fastens.As shown in Figure 1, the agent structure at shrinkage joint 2 is stage casing arch within the walls, curved shape under two ends, and the agent structure of wall external extension seam is that stage casing is recessed, the shape that two ends upwarp, the end that the two ends of shrinkage joint 2 agent structures are overlapped on wall external extension seam agent structure within the walls forms and is fastened and connected, thereby realize comprehensive waterproof of Railway Steel Truss Girder Bridges bridge floor, the rainwater bridge floor outside wall that prevents wall outer side trickles and pollutes beam-ends inner surface and bearing to beam-ends, thereby improve the durability of Railway Steel Truss Girder Bridges, guarantee traffic safety.
Further, the outer aluminium alloy extrusions of wall 14 bottoms of wall external extension seam are provided with substrate, and the outer aluminium alloy extrusions 14 of wall is fixed on steel truss girder base plate 16 by substrate, and wherein, substrate is fixed on steel truss girder base plate 16 by the second bolt 15.As shown in Figure 1, wall external extension seam is divided into limit main truss wall external extension seam 1 and middle main truss wall external extension seam 3 by installation site, in cause, there is rail track main truss 5 left and right sides, therefore middle main truss wall external extension stitches 3 two ends and fastens with the end at the shrinkage joint within the walls 2 of middle main truss 5 both sides respectively, in solution, the beam-ends gap at main truss 5 places is subject to the serious problem of rainwater pollution.As shown in Figure 3 and Figure 4, in cause, on main truss 5, erect to be useful on and strengthen fixing middle main truss gusset plate 18, the installation of middle main truss wall external extension seam 3 need be avoided middle main truss gusset plate 18, on the substrate of the outer aluminium alloy extrusions of wall 14 bottoms, have the groove with main truss gusset plate 18 adaptations, be convenient to when middle main truss wall external extension seam 3 is installed guarantee that rainwater can not descend Lou.And one end away from body of wall 6 of limit main truss wall external extension seam 1 can only extend to main truss gusset plate 19 places, limit near body of wall 6, and direct and limit main truss gusset plate 19 welding, or preferred, can with reference in the mounting means of main truss wall external extension seam 3, outside wall, on the substrate of aluminium alloy extrusions 14 bottoms, offer the position that groove is avoided limit main truss gusset plate 19, be convenient to limit main truss wall external extension seam 1 and install, make one end away from body of wall 6 of limit main truss wall external extension seam 1 extend to the lateral edges (i.e. the edge parallel with direction of traffic) of Railway Steel Truss Girder Bridges always.Mounting edge main truss wall external extension seam 1, shrinkage joint 2 and middle main truss wall external extension seam 3 within the walls, can contain steel truss girder bridge overall with, realize comprehensive waterproof of Railway Steel Truss Girder Bridges bridge floor, the rainwater bridge floor outside wall that prevents wall outer side trickles and pollutes beam-ends inner surface and bearing to beam-ends, thereby improve the durability of Railway Steel Truss Girder Bridges, guarantee traffic safety.
Above embodiment is only for illustrating the utility model, and be not limitation of the utility model, the those of ordinary skill in relevant technologies field, in the situation that not departing from spirit and scope of the present utility model, can also make a variety of changes and modification, therefore all technical schemes that are equal to also belong to category of the present utility model.
Claims (6)
1. a Railway Steel Truss Girder Bridges shrinkage joint, it is characterized in that: described shrinkage joint comprises shrinkage joint and wall external extension seam within the walls, the agent structure of the agent structure at described shrinkage joint within the walls and described wall external extension seam all comprises respectively the elastic packing band that the paired shape that is fixed on the strip in steel truss girder bridge beam-ends gap and both sides embed respectively described shape, and the two ends of the agent structure at described shrinkage joint within the walls fasten with the end of the agent structure of described wall external extension seam respectively.
2. Railway Steel Truss Girder Bridges according to claim 1 shrinkage joint, is characterized in that: the shape bottom of described wall external extension seam is provided with substrate, and the shape of described wall external extension seam is fixed on steel truss girder base plate by described substrate.
3. Railway Steel Truss Girder Bridges according to claim 1 shrinkage joint, it is characterized in that: described shrinkage joint within the walls also comprises the gear tiny fragments of stone, coal, etc. cover plate being covered on shape and elastic packing band, and a side of described gear tiny fragments of stone, coal, etc. cover plate is fixed on the beam-ends of steel truss girder bridge by setting element.
4. Railway Steel Truss Girder Bridges according to claim 3 shrinkage joint, is characterized in that: on the shape at described shrinkage joint within the walls, be positioned at body of wall inside wall place be provided with body of wall laminating for blocking the gear tiny fragments of stone, coal, etc. side plate in body of wall gap.
5. according to the Railway Steel Truss Girder Bridges shrinkage joint described in claim 1-4 any one, it is characterized in that: described shape is aluminium alloy extrusions or weathering steel section bar.
6. according to the Railway Steel Truss Girder Bridges shrinkage joint described in claim 1-4 any one, it is characterized in that: described elastic packing band is rubber seal tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320413454.2U CN203403357U (en) | 2013-07-11 | 2013-07-11 | Expansion joints of railway steel truss girder bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320413454.2U CN203403357U (en) | 2013-07-11 | 2013-07-11 | Expansion joints of railway steel truss girder bridge |
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| CN203403357U true CN203403357U (en) | 2014-01-22 |
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| CN201320413454.2U Expired - Lifetime CN203403357U (en) | 2013-07-11 | 2013-07-11 | Expansion joints of railway steel truss girder bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278627A (en) * | 2013-07-11 | 2015-01-14 | 中铁工程设计咨询集团有限公司 | Expansion joint of railway steel truss girder bridge |
-
2013
- 2013-07-11 CN CN201320413454.2U patent/CN203403357U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278627A (en) * | 2013-07-11 | 2015-01-14 | 中铁工程设计咨询集团有限公司 | Expansion joint of railway steel truss girder bridge |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |