CN108797324B - Spiral inhaul cable support - Google Patents
Spiral inhaul cable support Download PDFInfo
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- CN108797324B CN108797324B CN201810367224.4A CN201810367224A CN108797324B CN 108797324 B CN108797324 B CN 108797324B CN 201810367224 A CN201810367224 A CN 201810367224A CN 108797324 B CN108797324 B CN 108797324B
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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
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
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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
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
- E01D2101/32—Metal prestressed
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a spiral inhaul cable support which comprises an upper seat plate, an upper sliding plate, a spherical crown lining plate, a lower spherical sliding plate, a lower seat plate and a spiral inhaul cable. The upper slide plate is arranged between the upper seat plate and the spherical cap lining plate, and the upper surface and the lower surface of the upper slide plate are respectively matched with the bottom of the upper seat plate and the top of the spherical cap lining plate. The lower spherical sliding plate is arranged between the spherical cap lining plate and the lower seat plate, and the upper surface and the lower surface of the lower spherical sliding plate are respectively matched with the bottom of the spherical cap lining plate and the top of the lower seat plate. The spiral cable is connected with the upper seat plate and the lower seat plate respectively, and the spiral cable is horizontally arranged between the upper seat plate and the lower seat plate. The bottom of the upper seat plate is provided with a shear stop block, and the spiral inhaul cable is in contact with the shear stop block along the axial direction. The space occupancy is little, simple to operate, and simple structure is easily examined the change, consequently makes the upper seat board and the lower seat board of support can simplify the structure and lighten weight.
Description
Technical Field
The invention belongs to the technical field of bridge damping, and particularly relates to a spiral stay cable support.
Background
With the development of economy, the construction strength of the country on infrastructure is also increased, bridge engineering is developed at a high speed, and China is advancing from the major bridge to the strong bridge. The bridge is used as a junction project on a traffic line, and how to prevent the safety of the bridge in earthquake becomes a great urgency. In order to solve the disaster problem in the earthquake of the bridge, the seismic isolation support is arranged between the upper structure and the lower structure of the bridge in the simplest, economic and effective mode. Inhaul cable shock mount among the prior art exists at last bedplate and lower bedplate structure complicacy, the heavier problem of weight.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the spiral stay cable support with simple structure and light weight.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a spiral inhaul cable support comprises an upper seat plate, an upper sliding plate, a spherical crown lining plate, a lower spherical sliding plate, a lower seat plate and a spiral inhaul cable. The upper slide plate is arranged between the upper seat plate and the spherical cap lining plate, and the upper surface and the lower surface of the upper slide plate are respectively matched with the bottom of the upper seat plate and the top of the spherical cap lining plate. The lower spherical sliding plate is arranged between the spherical cap lining plate and the lower seat plate, and the upper surface and the lower surface of the lower spherical sliding plate are respectively matched with the bottom of the spherical cap lining plate and the top of the lower seat plate. The spiral cable is connected with the upper seat plate and the lower seat plate respectively, and the spiral cable is horizontally arranged between the upper seat plate and the lower seat plate. The bottom of the upper seat plate is provided with a shear stop block, and the spiral inhaul cable is in contact with the shear stop block along the axial direction.
According to the spiral inhaul cable support, the spiral inhaul cables are horizontally arranged on the periphery or two sides of the support, the space occupancy rate is small, the installation is convenient, the problem of the connection strength of the spiral inhaul cables is well solved, only one spiral inhaul cable is arranged on each side of the support, the structure is simple, the examination and the replacement are easy, and therefore the upper seat plate and the lower seat plate of the support can be simplified in structure and lightened in weight. In addition, according to the spiral inhaul cable support disclosed by the invention, the function of the support under the normal use condition can be realized, the support can be used for limiting the bridge to generate overlarge horizontal displacement and damping energy consumption under the action of a large shock, the bridge is prevented from falling on the beam, and the spiral inhaul cable support has the action of vertical drawing. Specifically, under the action of frequent and designed earthquake, the sliding friction pair and the rotating spherical friction pair of the support can dissipate earthquake energy, at the moment, the spiral cable does not bear any external force, under the action of heavy earthquake or rare earthquake, the spiral cable is tensioned, the overlarge horizontal displacement of the support is limited by the spiral cable, the bridge is prevented from falling down or the vertical vibration is overlarge, in addition, the horizontal rigidity and the vertical rigidity of the support can be increased by the spiral cable, the horizontal load of the support under the action of heavy earthquake is reduced, and the vertical force action of the support can be resisted.
With respect to the above technical solution, further improvements as described below can be made.
In a preferred embodiment, the upper slide is configured as a planar slide. Therefore, under the action of common and designed earthquakes, the earthquake energy can be dissipated through the sliding plane friction pair and the rotating spherical friction pair of the support,
in a further preferred embodiment, the upper slide is configured as a spherical slide. Therefore, under the action of common and designed earthquakes, the earthquake energy can be dissipated through the sliding spherical friction pair and the rotating spherical friction pair of the support.
According to the spiral cable support of the invention, in a preferred embodiment, the upper seat plate is provided with a fixed stop block for fixing the spiral cable, and the lower seat plate is provided with a limit stop block for installing the spiral cable. Through the structural design that fixed stop dog on the last bedplate and limit stop dog on the bedplate down cooperate mutually to fix the spiral cable for the structure of bedplate and bedplate down can simplify as far as under the prerequisite that satisfies fixed spiral cable to go up the bedplate, the structure of bedplate down.
Further, in a preferred embodiment, the fixed stopper is provided with a mounting hole for the spiral cable to pass through in sequence, and the limit stopper is provided with a limit groove for accommodating the spiral cable. The spiral inhaul cable can be simply installed and replaced through the matching of the installation hole and the limiting groove, and the structures of the upper seat plate and the lower seat plate are simplified as far as possible.
Further, in a preferred embodiment, the two ends of the spiral cable are provided with fixing blocks matched with the two ends of the fixed stop block. The fixed stop blocks arranged at the two ends of the spiral stay rope can further ensure that the spiral stay rope is installed between the upper seat plate and the lower seat plate firmly and stably.
Specifically, in a preferred embodiment, the fixed stopper is configured in an elongated rectangular structure, and both ends of the fixed stopper are provided with stoppers arranged opposite to the fixed block and forming a fit. The fixed stop block with the strip-shaped rectangular structure is simple in structure and easy to process and manufacture, and the stop blocks at the two ends of the fixed stop block can be matched with the fixed blocks at the two ends of the spiral inhaul cable to play a role in reinforcing and fixing the spiral inhaul cable.
In particular, in a preferred embodiment, the bump stopper is configured in an elongated rectangular structure. The limit stop block with the strip-shaped rectangular structure has a simple structure and is easy to process and manufacture.
Specifically, in one preferred embodiment, the shear block is configured as a quadrangular boss-like structure. The shear block with the quadrilateral boss-shaped structure can increase the contact part of the shear block and the spiral cable as much as possible so as to improve the shear resistance of the support, and is simple in structure so as to simplify the processing and manufacturing.
Specifically, in a preferred embodiment, the helical cable is made of prestressed rebar or stress-relief wire. The spiral inhaul cable made of the prestressed threaded steel bars or the stress-relieving steel wires and the steel strands can improve the tensile strength of the spiral inhaul cable.
In a preferred embodiment, the spiral cable is symmetrically arranged on both sides of the spiral cable support. The spiral inhaul cables are symmetrically arranged on two sides of the support, so that the support structure is simplified as much as possible, the bridge is limited by the support to generate overlarge horizontal displacement and shock absorption energy consumption under the action of large shock, and the bridge is prevented from falling to the beam and has the vertical drawing effect.
In another preferred embodiment, the spiral cable is symmetrically arranged around the spiral cable support. Through arrange the spiral cable around the support, can further ensure under the effect of shaking greatly, take place too big horizontal displacement and shock attenuation power consumption through support restriction bridge, prevent that the bridge from falling the roof beam and have the effect of vertical drawing.
Compared with the prior art, the invention has the advantages that: the space occupancy is little, simple to operate, the better joint strength problem of having solved the spiral cable, and every side of support only need arrange a spiral cable, simple structure, and easily the inspection is changed, consequently makes the last bedplate and the lower bedplate of support can simplify the structure and weight reduction. Both can realize the function of support normal use condition, can guarantee again that big shake effect down, take place too big horizontal displacement and shock attenuation power consumption through support restriction bridge, prevent that the bridge from falling the roof beam and have the effect of vertical drawing.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 schematically shows the overall structure of a spiral cable support of embodiment 1 of the present invention;
FIG. 2 is a schematic view showing a front cross-sectional structure of a spiral cable bearer according to embodiment 1 of the present invention;
FIG. 3 schematically shows a three-dimensional structure of a spiral cable according to an embodiment of the present invention;
FIG. 4 is a perspective view schematically showing an upper seat plate according to an embodiment of the present invention;
FIG. 5 is a perspective view schematically showing a lower seat plate according to an embodiment of the present invention;
fig. 6 schematically shows the overall structure of the spiral cable support of embodiment 2 of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The invention will be further explained in detail with reference to the figures and the embodiments without thereby limiting the scope of protection of the invention.
Fig. 1 schematically shows the overall structure of a spiral cable support 10 of embodiment 1 of the present invention. Fig. 2 schematically shows a front sectional structure of a spiral cable support 10 of embodiment 1 of the present invention. Fig. 3 schematically shows a three-dimensional structure of the spiral cable 6 of the embodiment of the invention. Fig. 4 schematically shows a perspective structure of the upper seat plate 1 according to the embodiment of the present invention. Fig. 5 schematically shows a perspective structure of the lower seat plate 5 according to the embodiment of the present invention. Fig. 6 schematically shows the overall structure of the spiral cable support 20 of embodiment 2 of the present invention.
Example 1:
as shown in fig. 1 and 2, the spiral cable support 10 according to the embodiment of the present invention includes an upper seat plate 1, an upper slide plate 2, a spherical cap liner plate 3, a lower spherical surface slide plate 4, a lower seat plate 5, and a spiral cable 6. The upper slide plate 2 is configured such that a planar slide plate is arranged between the upper seat plate 1 and the spherical cap liner plate 3, and the upper surface and the lower surface of the upper slide plate 2 are respectively brought into engagement with the bottom of the upper seat plate 1 and the top of the spherical cap liner plate 3. The lower spherical sliding plate 4 is arranged between the spherical cap lining plate 3 and the lower seat plate 5, and the upper surface and the lower surface of the lower spherical sliding plate 4 are respectively matched with the bottom of the spherical cap lining plate 3 and the top of the lower seat plate 5. The spiral cable 6 is connected with the upper seat plate 1 and the lower seat plate 5, respectively, and the spiral cable 6 is horizontally arranged between the upper seat plate 1 and the lower seat plate 5. The bottom of the upper seat plate 1 is provided with a shear stop 7, and the spiral cable 6 is in contact with the shear stop 7 in the axial direction. Specifically, the upper seat plate 1 is connected with an upper anchor 101, and the lower seat plate 5 is connected with a lower anchor 102. According to the spiral stay cable support, the spiral stay cables are horizontally arranged on the periphery or two sides of the support, the space occupancy rate is small, the installation is convenient, the problem of the connection strength of the spiral stay cables is well solved, only one spiral stay cable is arranged on each side of the support, the structure is simple, the examination and the replacement are easy, and therefore the upper seat plate and the lower seat plate of the support can be simplified in structure and lightened in weight. In addition, according to the spiral inhaul cable support disclosed by the invention, the function of the support under the normal use condition can be realized, and the overlarge horizontal displacement and the damping energy consumption of the bridge are limited by the support under the action of a large shock, so that the bridge is prevented from falling on the beam, and the spiral inhaul cable support has the action of vertical drawing. Specifically, under the action of frequent and designed earthquake, the earthquake energy can be dissipated through the sliding plane friction pair and the rotating spherical surface friction pair of the support, at the moment, the spiral cable does not bear any external force, under the action of heavy earthquake or rare earthquake, the spiral cable is tensioned, the overlarge horizontal displacement of the support is limited through the spiral cable, the bridge is prevented from falling down or the vertical vibration is overlarge, in addition, the horizontal rigidity and the vertical rigidity of the support can be increased through the spiral cable, the horizontal load of the support under the action of heavy earthquake is reduced, and the vertical force action of the support can be resisted.
As shown in fig. 1, 2, 4 and 5, in a preferred embodiment of the spiral cable support 10 according to the embodiment of the present invention, a fixed stopper 11 for fixing the spiral cable 6 is provided on the upper seat plate 1, and a limit stopper 51 for mounting the spiral cable 6 is provided on the lower seat plate 5. Through the structural design that fixed stop dog on the last bedplate and limit stop dog on the bedplate down cooperate mutually to fix the spiral cable for the structure of bedplate and bedplate down can simplify as far as under the prerequisite that satisfies fixed spiral cable to go up the bedplate, the structure of bedplate down. Further, in a preferred embodiment, the fixed stopper 11 is provided with a mounting hole 12 for the spiral cable 6 to pass through in sequence, and the limit stopper 51 is provided with a limit groove 52 for accommodating the spiral cable 6. The diameter of the mounting hole 12 is slightly larger than the diameter of the spiral positioning cable. The spiral inhaul cable can be simply installed and replaced through the matching of the installation hole and the limiting groove, and the structures of the upper seat plate and the lower seat plate are simplified as far as possible. Further, in a preferred embodiment, as shown in fig. 3, the two ends of the spiral cable 6 are provided with fixing blocks 8 which are engaged with the two ends of the fixing stopper 11. The fixed stop blocks arranged at the two ends of the spiral stay rope can further ensure that the spiral stay rope is installed between the upper seat plate and the lower seat plate firmly and stably.
Specifically, in a preferred embodiment, as shown in fig. 4, the fixed stopper 11 is configured in an elongated rectangular structure, and both ends of the fixed stopper 11 are provided with stoppers 13 disposed opposite to the fixed block 8 and forming a fit. The fixed stop block with the strip-shaped rectangular structure is simple in structure and easy to process and manufacture, and the stop blocks at the two ends of the fixed stop block can be matched with the fixed blocks at the two ends of the spiral inhaul cable to play a role in reinforcing and fixing the spiral inhaul cable. As shown in fig. 4, in particular, in a preferred embodiment, the shear block 7 is configured as a quadrangular boss-like structure. Preferably, the shear resistance of the shear block 7 is 10% to 100% of the vertical bearing capacity of the support. The shear stop block with the thickness in the quadrangular boss shape structure can increase the contact part of the shear stop block and the spiral inhaul cable as much as possible so as to improve the shear resistance of the support, and the shear stop block with the quadrangular boss shape structure has a simple structure so as to simplify the processing and manufacturing. As shown in fig. 5, in particular, in a preferred embodiment, the limit stops 51 are configured in an elongated rectangular configuration. The limit stop block with the strip-shaped rectangular structure has a simple structure and is easy to process and manufacture.
In particular, in a preferred embodiment, the helical cable 6 is made of prestressed threaded steel bars, or stress-relief wires, steel strands. The spiral inhaul cable made of the prestressed threaded steel bars or the stress-relieving steel wires and the steel strands can improve the tensile strength of the spiral inhaul cable. Preferably, the diameter of the material for manufacturing the spiral stay 6 is preferably 10 to 100 mm.
As shown in fig. 1 and 2, in a preferred embodiment, the spiral cable 6 is symmetrically disposed on both sides of the spiral cable support 10. The spiral inhaul cables are symmetrically arranged on two sides of the support, so that the support structure is simplified as much as possible, the bridge is limited by the support to generate overlarge horizontal displacement and shock absorption energy consumption under the action of large shock, and the bridge is prevented from falling to the beam and has the vertical drawing effect. In a further preferred embodiment, not shown, the spiral cable is arranged symmetrically around the spiral cable support. Through arrange the spiral cable around the support, can further ensure under the effect of shaking greatly, take place too big horizontal displacement and shock attenuation power consumption through support restriction bridge, prevent that the bridge from falling the roof beam and have the effect of vertical drawing.
Example 2:
as shown in fig. 6, the spiral cable support 20 according to the embodiment of the present invention includes an upper seat plate 1, an upper slide plate 2', a spherical cap liner plate 3, a lower spherical slide plate 4, a lower seat plate 5, and a spiral cable 6. The upper slide plate 2' is constructed such that a spherical slide plate is disposed between the upper seat plate 1 and the spherical cap liner plate 3, and the upper surface and the lower surface of the upper slide plate 2 are respectively brought into engagement with the bottom of the upper seat plate 1 and the top of the spherical cap liner plate 3. The lower spherical sliding plate 4 is arranged between the spherical cap lining plate 3 and the lower seat plate 5, and the upper surface and the lower surface of the lower spherical sliding plate 4 are respectively matched with the bottom of the spherical cap lining plate 3 and the top of the lower seat plate 5. The spiral cable 6 is connected with the upper seat plate 1 and the lower seat plate 5, respectively, and the spiral cable 6 is horizontally arranged between the upper seat plate 1 and the lower seat plate 5. The bottom of the upper seat plate 1 is provided with a shear stop 7, and the spiral cable 6 is in contact with the shear stop 7 in the axial direction. Specifically, the upper seat plate 1 is connected with an upper anchor 101, and the lower seat plate 5 is connected with a lower anchor 102. According to the spiral stay cable support, the spiral stay cables are horizontally arranged on the periphery or two sides of the support, the space occupancy rate is small, the installation is convenient, the problem of the connection strength of the spiral stay cables is well solved, only one spiral stay cable is arranged on each side of the support, the structure is simple, the examination and the replacement are easy, and therefore the upper seat plate and the lower seat plate of the support can be simplified in structure and lightened in weight. In addition, according to the spiral inhaul cable support disclosed by the invention, the function of the support under the normal use condition can be realized, and the overlarge horizontal displacement and the damping energy consumption of the bridge are limited by the support under the action of a large shock, so that the bridge is prevented from falling on the beam, and the spiral inhaul cable support has the action of vertical drawing. Specifically, under the action of frequent and designed earthquake, the earthquake energy can be dissipated through the sliding spherical friction pair and the rotating spherical friction pair of the support, at the moment, the spiral cable does not bear any external force, under the action of heavy earthquake or rare earthquake, the spiral cable is tensioned, the overlarge horizontal displacement of the support is limited through the spiral cable, the bridge is prevented from falling down or the vertical vibration is overlarge, in addition, the horizontal rigidity and the vertical rigidity of the support can be increased through the spiral cable, the horizontal load of the support under the action of heavy earthquake is reduced, and the vertical force action of the support can be resisted.
According to the embodiment, the spiral inhaul cable support has the advantages that the space occupancy rate is small, the installation is convenient, the problem of the connection strength of the spiral inhaul cable is well solved, only one spiral inhaul cable is arranged on each side of the support, the structure is simple, the inspection and the replacement are easy, and therefore the upper seat plate and the lower seat plate of the support can be simplified in structure and lightened in weight. Both can realize the function of support normal use condition, can guarantee again that big shake effect down, take place too big horizontal displacement and shock attenuation power consumption through support restriction bridge, prevent that the bridge from falling the roof beam and have the effect of vertical drawing.
The invention has been described with reference to a preferred embodiment, but various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A spiral inhaul cable support is characterized by comprising an upper seat plate, an upper sliding plate, a spherical crown lining plate, a lower spherical surface sliding plate, a lower seat plate and a spiral inhaul cable;
the upper sliding plate is arranged between the upper seat plate and the spherical cap lining plate, and the upper surface and the lower surface of the upper sliding plate are respectively matched with the bottom of the upper seat plate and the top of the spherical cap lining plate;
the lower spherical sliding plate is arranged between the spherical cap lining plate and the lower seat plate, and the upper surface and the lower surface of the lower spherical sliding plate are respectively matched with the bottom of the spherical cap lining plate and the top of the lower seat plate;
the spiral stay cables are respectively connected with the upper seat plate and the lower seat plate and are horizontally arranged between the upper seat plate and the lower seat plate;
the bottom of the upper seat plate is provided with a shear stop block, and the spiral inhaul cable is in contact with the shear stop block along the axial direction,
the upper seat plate is provided with a fixed stop dog for fixing the spiral inhaul cable, and the lower seat plate is provided with a limit stop dog for mounting the spiral inhaul cable;
the fixed stop block is provided with a mounting hole for the spiral inhaul cable to sequentially pass through, and the limit stop block is provided with a limit groove for accommodating the spiral inhaul cable;
the two ends of the spiral inhaul cable are provided with fixed blocks matched with the two ends of the fixed stop block, the fixed stop block is in a long strip rectangular structure, and the two ends of the fixed stop block are provided with stop blocks which are arranged opposite to the fixed blocks and matched with the fixed blocks.
2. The spiral cable support according to claim 1, wherein the upper slide is configured as a planar slide.
3. The spiral cable mount of claim 1, wherein the upper sled is configured as a spherical sled.
4. A spiral cable bearer according to any one of claims 1 to 3, wherein the limit stop is configured as an elongated rectangular structure.
5. A spiral cable bearer according to any one of claims 1 to 3, wherein the shear block is configured as a quadrangular boss-like structure.
6. A spiral cable support as claimed in any one of claims 1 to 3, wherein the spiral cable is made of pre-stressed rebar or stress-relief wire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367224.4A CN108797324B (en) | 2018-04-23 | 2018-04-23 | Spiral inhaul cable support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367224.4A CN108797324B (en) | 2018-04-23 | 2018-04-23 | Spiral inhaul cable support |
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| CN108797324A CN108797324A (en) | 2018-11-13 |
| CN108797324B true CN108797324B (en) | 2020-07-28 |
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| CN201810367224.4A Active CN108797324B (en) | 2018-04-23 | 2018-04-23 | Spiral inhaul cable support |
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| CN110528383B (en) * | 2019-07-31 | 2024-03-08 | 同济大学 | Buffer type inhaul cable shock-absorbing support without additional vertical force |
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| CN201843071U (en) * | 2010-09-02 | 2011-05-25 | 同济大学 | Pull rope and stop block combined limiting anti-seismic supporting seat |
| CN205443916U (en) * | 2015-12-31 | 2016-08-10 | 同济大学 | Intelligence magnetic flux stay rope shock absorption support |
| CN205443918U (en) * | 2015-12-31 | 2016-08-10 | 同济大学 | Intelligence stay rope shock absorption support |
| CN207079465U (en) * | 2017-07-17 | 2018-03-09 | 四川双建路桥机械有限责任公司 | Bracing cable for bridge formula girder falling fixes aseismatic bearing |
| CN107815962A (en) * | 2017-12-20 | 2018-03-20 | 株洲时代新材料科技股份有限公司 | A kind of bridge damping bearing and damping method |
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