CN204849574U - Beam supports that falls is prevented to drag -line - Google Patents
Beam supports that falls is prevented to drag -line Download PDFInfo
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- CN204849574U CN204849574U CN201520572052.6U CN201520572052U CN204849574U CN 204849574 U CN204849574 U CN 204849574U CN 201520572052 U CN201520572052 U CN 201520572052U CN 204849574 U CN204849574 U CN 204849574U
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Abstract
The utility model relates to a beam supports that falls is prevented to drag -line. The roof beam body sets up shear pin with support between the mound top in spacing orientation, permit to cut off under the macroseism, but the undersetting board still has the fall danger of roof beam of slippage on under rarely occurred earthquake acts on. The utility model discloses set up the cable subassembly between the side end of upper bracket board and bottom suspension bedplate, be connected both, including cable, cable top board, cable holding down plate and connecting bolt, the upper and lower clamp plate of cable mates into two sets ofly, and on dividing into groups to be fixed in upper bracket board and bottom suspension bedplate corresponding side end face through connecting bolt, cable both ends tip clamp is by fixed between the upper and lower clamp plate of cable, and cable both ends tip is round platform that the diameter enlarges the gradually end that appears. The utility model discloses a cable subassembly is connected reliably with the support, and cable end atress is stable, can effectively avoid the structural failure under the impact force, prevents the roof beam occurence of failure.
Description
Technical field
The utility model relates to a kind of bridge pad, is specifically related to a kind of drag-line girder falling bearing.
Background technology
Bridge is the key component in lifeline engineering, after emergency relief after the earthquake and earthquake relief work, calamity, have extremely important status in restoration and reconstruction.Violent earthquake can cause bridge be subject to major injury or collapse, and certainly will cause serious interruption of communication, and earthquake relief work work is obstructed, so that causes the larger loss of life and property, and Earthquake hazard degree is expanded.The beam that falls often occurs and bridge earthquake the most serious.The main cause that the beam that falls destroys is that the relative displacement of beam and bridge pier (platform) is excessive, and when bearing is subject to the displacement limits exceeding bearing, bearing is destroyed, and bridge superstructure departs from bearing, and beam knows from experience the beam that falls.China " Seismic Design of Highway Bridges detailed rules and regulations " (JTG/TB02-01-2008) clearly proposes, and in 8 degree of districts, should adopt rational stopping means, prevents structure adjacent members from producing excessive relative displacement." Urban Bridge earthquake resistant design code " (CJJ166-2011) also points out that should arrange stopping means in 8 degree of districts control the displacement of beam pier.
At present, the bearing adopted in domestic bridge engineering is not enough without girder falling function or falling-off prevention measures, and under geological process, support displacement transfinites destructions, causes the beam that falls to endanger.
Summary of the invention
The purpose of this utility model is to provide a kind of drag-line girder falling bearing, when running into rarely occurred earthquake effect, connects, the generation of restrainer by the upper and lower seat board of traction cable by bearing.
The technical scheme that the utility model adopts is:
A kind of drag-line girder falling bearing, comprises upper bracket plate and lower support plate, it is characterized in that:
Be provided with traction cable between upper bracket plate and the side end of lower support plate, both are connected;
Traction cable comprises drag-line, drag-line top board, drag-line lower platen and connecting bolt;
Described drag-line top board and drag-line lower platen are paired into two groups up and down, divide into groups to be fixed on the upper bracket plate side end face corresponding with lower support plate by connecting bolt;
End, described drag-line two ends is sandwiched between drag-line top board and drag-line lower platen and is fixed.
End, described drag-line two ends is the truncated cone-shaped termination that diameter expands gradually, and the inner, truncated cone-shaped termination and drag-line joining place form the land that diameter is uprushed;
Be provided with should the truncated cone-shaped hole of truncated cone-shaped tip shapes between drag-line top board and drag-line lower platen, the end of drag-line be sandwiched between drag-line top board and drag-line lower platen, and truncated cone-shaped termination is embedded in truncated cone-shaped hole.
Described connecting bolt is hexagon socket head cap screw, and its bolt head embeds in the counterbore of drag-line top board and drag-line lower platen end face, and the screw rod of connecting bolt passes the unthreaded hole of drag-line top board and drag-line lower platen.
Described traction cable ring week between upper bracket plate and the side end of lower support plate evenly arranges many groups;
Or arrange many groups symmetrically and evenly between relative side end between upper bracket plate and lower support plate.
Described drag-line is high strength wire rope, steel strand, Carbon fibe bundle or chain.
Described drag-line exposed parts can arrange rubber sleeve, or vulcanised rubber layer.
The utility model has the following advantages:
1, traction cable is connected with bearing reliably, and wedge shape termination stability under loading is reliable, avoids the structural failure under impact force, restrainer;
2, drag-line and bearing are isolating construction, and bearing can be all kinds of bridge pad, highly versatile;
3, be connected with bearing by stayed structure by bolt, repair and replacement are convenient;
4, stayed structure adopts rubber by sulfuration or is wrapped in high strength wire rope periphery, and durability is high, favorable anti-corrosion effect.
Accompanying drawing explanation
Fig. 1 is that the utility model master is depending on partly cuing open figure.
Fig. 2 is the utility model lateral view.
Fig. 3 is the partial enlarged drawing of I part in Fig. 1.
Fig. 4 is the partial enlarged drawing of II part in Fig. 2.
In figure, 1-upper bracket plate, the upper sphere corrosion resistant plate of 2-, the upper sphere slide plate of 3-, the two sphere liner plate of 4-, 5-lower peripheral surface slide plate, 6-lower peripheral surface corrosion resistant plate, 7-lower support plate, 8-drag-line top board, 9-drag-line lower platen, 10-high strength wire rope, 11-rubber sleeve, 12-connecting bolt, 13-guide runner assembly, 14-limiting plate, 15-shear pin.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
A kind of drag-line girder falling bearing that the utility model relates to, have fixing reliable, easily change, feature that durability is high, be applicable to the bridge pad that ball shaped steel bearing, pot bearing, laminated rubber bases, friction pendulum spherical bearing, elastoplasticity steel support etc. have upper bracket plate 1 and lower support plate 7.
For friction pendulum spherical bearing (see Fig. 1), this seat structure comprises upper bracket plate 1, lower support plate 7 and two sphere liner plates 4 therebetween, two sphere liner plate 4 upper and lower surface is respectively arranged with sphere slide plate 3 and lower peripheral surface slide plate 5, upper bracket plate 1 concave surface is provided with sphere corrosion resistant plate 2, the concave surface of lower support plate 7 is provided with lower peripheral surface corrosion resistant plate 6.In addition, be also provided with limiting plate 14 between upper bracket plate 1 and lower support plate 7 side end face, limiting plate 14 one end is connected to upper bracket plate 1 by shear pin 15, and the other end is connected to lower support plate 7 by guide runner assembly 13.
The utility model arranges and organizes traction cable more between upper bracket plate 1 and the side end of lower support plate 7, both is connected.Described traction cable ring week between upper bracket plate 1 and the side end of lower support plate 7 evenly arranges many groups; Also many groups can be arranged symmetrically and evenly between the relative side end between upper bracket plate 1 and lower support plate 7.Traction cable comprises drag-line, drag-line top board 8, drag-line lower platen 9 and connecting bolt 12.Described drag-line top board 8 and drag-line lower platen about 9 are paired into two groups, divide into groups to be fixed on upper bracket plate 1 and the corresponding side end face of lower support plate 7 by connecting bolt 12.Described connecting bolt 12 is hexagon socket head cap screw, and bolt head embeds in the counterbore of the upper and lower pressing plate of drag-line, and connecting bolt 12 is through the unthreaded hole of the upper and lower pressing plate of drag-line.End, described drag-line two ends is sandwiched between drag-line top board 8 and drag-line lower platen 9 and is fixed.
Described drag-line is high strength wire rope, steel strand, Carbon fibe bundle or chain, and its end, two ends is the truncated cone-shaped termination that diameter expands gradually, and the inner, truncated cone-shaped termination and drag-line joining place form the land that diameter is uprushed.Be provided with should the truncated cone-shaped hole of truncated cone-shaped tip shapes between drag-line top board 8 and drag-line lower platen 9, the end of drag-line be sandwiched between drag-line top board 8 and drag-line lower platen 9, and truncated cone-shaped termination is embedded in truncated cone-shaped hole.The design bearing capacity of high strength wire rope 10 is not less than 40% of vertical bearing capacity usually, the design load of connecting bolt 12 is at least 1.2 times of high strength wire rope bearing capacity, ensure that traction cable is connected with the reliable of upper lower support plate, the fit shapes between drag-line and the upper and lower pressing plate of drag-line ensure that the stability of Impact Load lower stress.The exposed parts of drag-line total length can arrange rubber sleeve 11, is wrapped by vulcanization.
1., under normal operating condition, bearing to coordinate the transmission that realizes horizontal force and movable normally by guide runner assembly 13 with limiting plate 14, entire infrastructure is all in the lower elastic working stage;
2. (corresponding earthquake fortification level I under common earthquake state, i.e. P1 level): support body is in the elastic working stage, limiting plate 14 and shear pin 15 stopping means are in elastoplasticity working stage, produce small distortion under stopping means limiting case, but the normal use of bearing can not be affected;
3. (corresponding earthquake fortification level II under few chance earthquake state, i.e. P2 level): support body is in the elastic working stage, shear pin 15 is cut, consume part seismic energy, rubbing surface and plane of oscillation are started working simultaneously, extending the period of motion realizes shock insulation function, and on the other hand by toward reset Friction dissipation seismic energy, drag-line activity in free displacement does not produce effect.
4. under rarely occurred earthquake state, (correspondence is provided fortification against earthquakes level III, i.e. P3 level): support body is in lower elastoplasticity working stage, two sphere liner plate 4 is at ultimate limit state lower swing, traction cable enters duty, upper and lower support plate is connected, the generation of restrainer, when guaranteeing to shake greatly, bridge traffic is not interrupted and the timely disaster relief.
Traction cable serves the function of afterbody girder falling under rarely occurred earthquake, does not affect body normal condition, and traction cable and body adopt separate design, convenient maintenance and replacement.Drag-line adopts outside rubber 11 sulfuration and high strength wire rope 12 and is with the high feature of good corrosion-resistant and durability.Meanwhile, traction cable can support the use with common bridge beam support, and versatility is good.
Content of the present utility model is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading the utility model manual to any equivalence that technical solutions of the utility model are taked, is claim of the present utility model and contains.
Claims (6)
1. a drag-line girder falling bearing, comprises upper bracket plate (1) and lower support plate (7), it is characterized in that:
Be provided with traction cable between the side end of upper bracket plate (1) and lower support plate (7), both are connected;
Traction cable comprises drag-line, drag-line top board (8), drag-line lower platen (9) and connecting bolt (12);
Described drag-line top board (8) and drag-line lower platen (9) are paired into two groups up and down, divide into groups to be fixed on upper bracket plate (1) and the corresponding side end face of lower support plate (7) by connecting bolt (12);
End, described drag-line two ends is sandwiched between drag-line top board (8) and drag-line lower platen (9) and is fixed.
2. a kind of drag-line girder falling bearing according to claim 1, is characterized in that:
End, described drag-line two ends is the truncated cone-shaped termination that diameter expands gradually, and the inner, truncated cone-shaped termination and drag-line joining place form the land that diameter is uprushed;
Be provided with should the truncated cone-shaped hole of truncated cone-shaped tip shapes between drag-line top board (8) and drag-line lower platen (9), the end of drag-line be sandwiched between drag-line top board (8) and drag-line lower platen (9), and truncated cone-shaped termination is embedded in truncated cone-shaped hole.
3. a kind of drag-line girder falling bearing according to claim 2, is characterized in that:
Described connecting bolt (12) is hexagon socket head cap screw, and its bolt head embeds in the counterbore of drag-line top board (8) and drag-line lower platen (9) end face, and the screw rod of connecting bolt (12) passes the unthreaded hole of drag-line top board (8) and drag-line lower platen (9).
4. a kind of drag-line girder falling bearing according to claim 3, is characterized in that:
Described traction cable evenly arranges many groups in ring week between upper bracket plate (1) and the side end of lower support plate (7);
Or arrange many groups symmetrically and evenly between relative side end between upper bracket plate (1) and lower support plate (7).
5. a kind of drag-line girder falling bearing according to claim 4, is characterized in that:
Described drag-line is high strength wire rope, steel strand, Carbon fibe bundle or chain.
6. a kind of drag-line girder falling bearing according to claim 5, is characterized in that:
Described drag-line exposed parts can arrange rubber sleeve, or vulcanised rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572052.6U CN204849574U (en) | 2015-08-03 | 2015-08-03 | Beam supports that falls is prevented to drag -line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572052.6U CN204849574U (en) | 2015-08-03 | 2015-08-03 | Beam supports that falls is prevented to drag -line |
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| CN204849574U true CN204849574U (en) | 2015-12-09 |
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| CN201520572052.6U Active CN204849574U (en) | 2015-08-03 | 2015-08-03 | Beam supports that falls is prevented to drag -line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337364A (en) * | 2016-08-31 | 2017-01-18 | 招商局重庆交通科研设计院有限公司 | Anti-vibration support with shear bolts |
| CN109487682A (en) * | 2019-01-11 | 2019-03-19 | 衡水中铁建工程橡胶有限责任公司 | A kind of metal damp type girder falling vibration absorption and isolation support |
| CN109778686A (en) * | 2019-03-18 | 2019-05-21 | 中铁二院工程集团有限责任公司 | A kind of railroad bridge vibration absorption and isolation support with multiple limit function |
-
2015
- 2015-08-03 CN CN201520572052.6U patent/CN204849574U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337364A (en) * | 2016-08-31 | 2017-01-18 | 招商局重庆交通科研设计院有限公司 | Anti-vibration support with shear bolts |
| CN109487682A (en) * | 2019-01-11 | 2019-03-19 | 衡水中铁建工程橡胶有限责任公司 | A kind of metal damp type girder falling vibration absorption and isolation support |
| CN109487682B (en) * | 2019-01-11 | 2023-11-21 | 中裕铁信交通科技股份有限公司 | Metal damping type beam falling prevention shock absorption and isolation support |
| CN109778686A (en) * | 2019-03-18 | 2019-05-21 | 中铁二院工程集团有限责任公司 | A kind of railroad bridge vibration absorption and isolation support with multiple limit function |
| CN109778686B (en) * | 2019-03-18 | 2024-01-23 | 中铁二院工程集团有限责任公司 | Railway bridge shock absorption and insulation support with multiple limiting functions |
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