CN104278627A - Expansion joint of railway steel truss girder bridge - Google Patents
Expansion joint of railway steel truss girder bridge Download PDFInfo
- Publication number
- CN104278627A CN104278627A CN201310291589.0A CN201310291589A CN104278627A CN 104278627 A CN104278627 A CN 104278627A CN 201310291589 A CN201310291589 A CN 201310291589A CN 104278627 A CN104278627 A CN 104278627A
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- CN
- China
- Prior art keywords
- wall
- truss girder
- steel truss
- shrinkage joint
- bridge
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/062—Joints having intermediate beams
Abstract
The invention relates to the field of bridge engineering, in particular to an expansion joint 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 pairs, 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 the traffic safety is guaranteed.
Description
Technical field
The present invention relates to bridge engineering field, particularly relate 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 that China railways bridge uses mainly contains two kinds: be applicable to the TSSF of box beam and be applicable to the rubber fastening band of T-shaped beam.Steel truss girder uses open bridge floors structure in the past, and bridge does not establish shrinkage joint, 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 that current steel truss girder bridge bridge floor uses is all directly 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 outside gear Zha Qiang or outside protecting wall cannot isolate bridge floor ponding, and a large amount of rainwater, along the outer bridge floor trickling of wall to beam-ends, pollutes beam-ends inner surface and bearing, causes adverse effect to the durability of steel structure bridge.When steel truss girder bridge adopts three main truss structure, the situation of middle purlin is particularly severe, and both sides, the middle purlin ponding of circuit near middle purlin cannot be discharged, and collects and flow to beam-ends along middle purlin, have a strong impact on the durability of beam body and bridge substructure at middle purlin place.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is to provide a kind of Railway Steel Truss Girder Bridges shrinkage joint, solves the wall inside portion that existing shrinkage joint only covers steel truss girder bridge bridge floor, can not realize comprehensive anti-water problem.
(2) technical scheme
For reaching above-mentioned purpose, the invention 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 the elastic sealing bands that the paired shape being fixed on the strip in steel truss girder bridge beam-ends gap and both sides embed described shape respectively respectively, and the end of the agent structure that the two ends of the agent structure at described shrinkage joint are within the walls stitched with described wall external extension respectively fastens.
Preferably, be provided with substrate bottom the shape of described wall external extension seam, 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 be covered on shape and elastic sealing bands, and the beam-ends of steel truss girder bridge is fixed in the side of described gear tiny fragments of stone, coal, etc. cover plate by setting element.
Preferably, the shape at described shrinkage joint is within the walls positioned at body of wall inside wall place and is provided with the gear tiny fragments of stone, coal, etc. side plate for blocking body of wall gap of fitting with body of wall.
Preferably, described shape is aluminium alloy extrusions or weathering steel section bar.
Preferably, described elastic sealing bands is rubber seal tape.
(3) beneficial effect
The Railway Steel Truss Girder Bridges shrinkage joint that the present invention adopts technique scheme to provide, the beam-ends gap of Railway Steel Truss Girder Bridges width is covered by the shrinkage joint within the walls mutually fastened by end and wall external extension seam comprehensively, realize comprehensive waterproof of Railway Steel Truss Girder Bridges bridge floor, prevent the rainwater of wall outer side from polluting beam-ends inner surface and bearing along the outer bridge floor trickling of wall to beam-ends, thus improve the durability of Railway Steel Truss Girder Bridges, ensure traffic safety.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the arrangement at Railway Steel Truss Girder Bridges shrinkage joint of the present invention;
Fig. 2 is the A-A sectional view at shrinkage joint within the walls of the present invention;
Fig. 3 is the B-B sectional view of wall external extension of the present invention seam;
Fig. 4 is the top view of middle main truss wall external extension seam of the present invention.
Wherein, 1: limit main truss wall external extension stitches; 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.
Detailed description of the invention
Below in conjunction with drawings and Examples, Railway Steel Truss Girder Bridges shrinkage joint of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Railway Steel Truss Girder Bridges comprises more piece and is erected at steel truss girder on bridge pier bearing pad.Often save steel truss girder and comprise more than the two or two steel work main trusses be parallel to each other, main couple is located on the bearing of bridge pier, main truss be above provided with steel truss girder base plate, 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, be referred to as protecting wall without this twice body of wall on tiny fragments of stone, coal, etc. Railway Steel Truss Girder Bridges.Beam-ends (the i.e. end of steel truss girder of Railway Steel Truss Girder Bridges, or also can think the end of main truss) between there is gap, body of wall corresponding with it disconnects at railroad bridge end place and forms gap, and steel truss girder base plate disconnects at the beam-ends place of Railway Steel Truss Girder Bridges and forms gap.Position between the parallel body of wall of twice is within the walls, and steel truss girder base plate is within the walls covered with way of concrete foundations or concrete box girder, and way of concrete foundations or concrete box girder are equipped with Crane Rail, and vehicle forward direction is parallel with main truss.With the opposite side of body of wall corresponding within the walls for being called outside wall, the steel truss girder base plate outside wall has the main truss gusset plate of setting, the reinforcement that main truss gusset plate is used for main truss and main truss superstructure is fixed.
The agent structure at shrinkage joint comprises the paired aluminium alloy extrusions being fixedly embedded the strip at gap place between Railway Steel Truss Girder Bridges beam-ends, and comprise for connecting the rubber seal tape of two aluminium alloy extrusions in embedding aluminium alloy extrusions, shrinkage joint also comprises the fastening devices etc. for aluminium alloy extrusions being fixed on Railway Steel Truss Girder Bridges beam-ends in addition.The length direction of aluminium alloy extrusions is parallel to direction, beam-ends gap, and aluminium alloy extrusions has the groove for installing rubber seal tape, and the opening of two aluminium alloy extrusions upper grooves is relative.Aluminium alloy extrusions is herein used for fixing rubber seal tape, can also replace aluminium alloy extrusions with shapes such as weathering steel section bars; Rubber seal tape is for adapting to the change in steel truss girder bridge beam-ends gap, and can replace rubber seal tape with elastic sealing bands such as Steel Bellows, Steel Bellows covers the gap of beam-ends and can stretch along with the size in gap.
Below for railway three main truss steel truss girder bridge, Railway Steel Truss Girder Bridges shrinkage joint of the present invention is described in detail.As shown in Figure 1, the main truss often saving steel truss girder of railway three main truss steel truss girder bridge 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.Be described for the rail track on the left of Fig. 1, the twice body of wall parallel with main truss 6 is provided with between the upper main truss of steel truss girder base plate 16 5 and limit main truss 4, namely steel truss girder base plate 16 is within the walls equipped with way of concrete foundations between body of wall 6, way of concrete foundations is 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 installing shrinkage joint.Shrinkage joint prevents steel truss girder bridge due to climate temperature change (heat rises, shrinkage), bridge is made to produce crack or destruction and the build joint that arranges along bridge width direction, shrinkage joint adapts to the change in steel truss girder bridge beam-ends gap, and prevents rainwater from polluting beam-ends inner surface and bearing along bridge floor trickling to beam-ends.
Concrete, shrinkage joint between body of wall 6 is shrinkage joint 2 within the walls, as shown in Figure 2, within the walls shrinkage joint 2 aluminium alloy extrusions within the walls 20 that comprises paired strip with embed in aluminium alloy extrusions 20 within the walls for being connected the rubber seal tape within the walls 7 of two aluminium alloy extrusions 20 within the walls, aluminium alloy extrusions 20 has groove within the walls, the opening of two aluminium alloy extrusions 20 upper grooves is within the walls relative, and two long limits of banded rubber seal tape within the walls 7 embed in grooves.To be installed in beam-ends gap in shrinkage joint 2 within the walls, thus cover beam-ends gap within the walls, realize bridge floor beam-ends waterproof within the walls.Aluminium alloy extrusions 20 is fixed on the back built-in fitting 11 that steel truss girder bridge beam-ends is embedded in way of concrete foundations by the first bolt 12 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 within the walls on rubber seal tape 7 within the walls, the 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 welds with back built-in fitting 11, spacer bars 9 one end is inserted in positioning steel tube 10, and spacer bars 9 other end and the side of gear tiny fragments of stone, coal, etc. cover plate 8 are rotationally connected, make gear tiny fragments of stone, coal, etc. cover plate 8 can expose aluminium alloy extrusions 20 and within the walls rubber seal tape 7 within the walls along spacer bars 9 side Unscrew.When after shrinkage joint 2 installation within the walls, gear tiny fragments of stone, coal, etc. cover plate 8 is in the closed condition covering aluminium alloy extrusions 20 within the walls and rubber seal tape 7 within the walls, the tiny fragments of stone, coal, etc. is layed in way of concrete foundations by constructor, can prevent the tiny fragments of stone, coal, etc. from entering and destroy rubber seal tape 7 within the walls in shrinkage joint 2 within the walls; When needs are to when shrinkage joint 2 is overhauled within the walls, gear tiny fragments of stone, coal, etc. cover plate 8 can be opened, check and repair shrinkage joint 2 within the walls.The aluminium alloy extrusions within the walls 20 at shrinkage joint 2 is within the walls positioned at body of wall 6 inside wall place and is provided with the gear tiny fragments of stone, coal, etc. side plate 17 for blocking body of wall 6 gap of fitting with body of wall 6, the tiny fragments of stone, coal, etc. within the walls can be prevented to be 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 wall outer rubber band 13 for be connected two piece walls outer aluminium alloy extrusions 14 interior with the outer aluminium alloy extrusions of embedding wall 14 of paired strip, 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, thus 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 namely within the walls the end of aluminium alloy extrusions 20 and the two ends of rubber seal tape 7 and the wall external extension agent structure of stitching and the outer aluminium alloy extrusions 14 of wall and wall outer rubber band 13 within the walls fasten.As shown in Figure 1, the agent structure at shrinkage joint 2 is stage casing arch within the walls, shape curved under two ends, and the agent structure of wall external extension seam is that stage casing is recessed, the shape that two ends upwarp, within the walls the two ends of shrinkage joint 2 agent structure be overlapped on wall external extension seam agent structure end formed be fastened and connected, thus realize comprehensive waterproof of Railway Steel Truss Girder Bridges bridge floor, prevent the rainwater of wall outer side from polluting beam-ends inner surface and bearing along the outer bridge floor trickling of wall to beam-ends, thus improve the durability of Railway Steel Truss Girder Bridges, ensure traffic safety.
Further, be provided with substrate bottom the outer aluminium alloy extrusions 14 of wall of wall external extension seam, 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 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 place is by the serious problem of rainwater pollution.As shown in Figure 3 and Figure 4, because of in main truss 5 erect have for main truss gusset plate 18 in strengthening fixing, the installation of middle main truss wall external extension seam 3 need avoid middle main truss gusset plate 18, substrate bottom the outer aluminium alloy extrusions 14 of wall has the groove with main truss gusset plate 18 adaptation, is convenient to ensure that rainwater can not descend Lou while middle main truss wall external extension seam 3 is installed.And one end away from body of wall 6 of limit main truss wall external extension seam 1 only can extend to main truss gusset plate 19 place, limit near body of wall 6, and directly weld with limit main truss gusset plate 19, or it is preferred, can refer to the mounting means of middle main truss wall external extension seam 3, the position that groove avoids limit main truss gusset plate 19 offered by substrate bottom the outer aluminium alloy extrusions 14 of wall, be convenient to limit main truss wall external extension seam 1 install, make one end away from body of wall 6 of limit main truss wall external extension seam 1 extend to the lateral edges (namely parallel with direction of traffic edge) of Railway Steel Truss Girder Bridges.Mounting edge main truss wall external extension seam 1, within the walls shrinkage joint 2 and middle main truss wall external extension seam 3, steel truss girder bridge overall with can be contained, realize comprehensive waterproof of Railway Steel Truss Girder Bridges bridge floor, prevent the rainwater of wall outer side from polluting beam-ends inner surface and bearing along the outer bridge floor trickling of wall to beam-ends, thus improve the durability of Railway Steel Truss Girder Bridges, ensure traffic safety.
Above embodiment is only for illustration of the present invention, and be not limitation of the present invention, the those of ordinary skill of relevant technical field, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all equivalent technical schemes also belong to category of the present invention.
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 the elastic sealing bands that the paired shape being fixed on the strip in steel truss girder bridge beam-ends gap and both sides embed described shape respectively respectively, and the end of the agent structure that the two ends of the agent structure at described shrinkage joint are within the walls stitched with described wall external extension respectively fastens.
2. Railway Steel Truss Girder Bridges shrinkage joint according to claim 1, is characterized in that: be provided with substrate bottom the shape of described wall external extension seam, 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 shrinkage joint according to claim 1, it is characterized in that: described shrinkage joint within the walls also comprises the gear tiny fragments of stone, coal, etc. cover plate be covered on shape and elastic sealing bands, the beam-ends of steel truss girder bridge is fixed in the side of described gear tiny fragments of stone, coal, etc. cover plate by setting element.
4. Railway Steel Truss Girder Bridges shrinkage joint according to claim 3, is characterized in that: the shape at described shrinkage joint is within the walls positioned at body of wall inside wall place and is provided with the gear tiny fragments of stone, coal, etc. side plate for blocking body of wall gap of fitting with body of wall.
5. the Railway Steel Truss Girder Bridges shrinkage joint according to any one of claim 1-4, is characterized in that: described shape is aluminium alloy extrusions or weathering steel section bar.
6. the Railway Steel Truss Girder Bridges shrinkage joint according to any one of claim 1-4, is characterized in that: described elastic sealing bands is rubber seal tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291589.0A CN104278627A (en) | 2013-07-11 | 2013-07-11 | Expansion joint of railway steel truss girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291589.0A CN104278627A (en) | 2013-07-11 | 2013-07-11 | Expansion joint of railway steel truss girder bridge |
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| CN104278627A true CN104278627A (en) | 2015-01-14 |
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| CN201310291589.0A Pending CN104278627A (en) | 2013-07-11 | 2013-07-11 | Expansion joint of railway steel truss girder bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505437A (en) * | 2018-05-22 | 2018-09-07 | 杭州溯真科技有限公司 | A kind of extrusion item for expansion gap device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108505437A (en) * | 2018-05-22 | 2018-09-07 | 杭州溯真科技有限公司 | A kind of extrusion item for expansion gap device |
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Application publication date: 20150114 |