CN212200037U - Ring-shaped radial stay rope beam falling prevention support - Google Patents
Ring-shaped radial stay rope beam falling prevention support Download PDFInfo
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- CN212200037U CN212200037U CN201922249233.6U CN201922249233U CN212200037U CN 212200037 U CN212200037 U CN 212200037U CN 201922249233 U CN201922249233 U CN 201922249233U CN 212200037 U CN212200037 U CN 212200037U
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- wire rope
- steel wire
- upper seat
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Abstract
The utility model belongs to bridge beam supports especially indicates a roof beam support is prevented falling by radial cable of annular. The damping device comprises an upper seat plate and a lower seat plate, wherein a steel wire rope damping device is connected between the upper seat plate and the lower seat plate; the steel wire rope damping device comprises a jointless steel wire rope ring which is distributed between the upper seat plate and the lower seat plate at intervals, and the jointless steel wire rope ring is connected with the upper seat plate or the lower seat plate through a pressing strip respectively. The utility model discloses effectively solved among the prior art anchor performance poor, the complicated scheduling problem of structure, had advantages such as simple structure compactness, assembly facility.
Description
Technical Field
The utility model belongs to bridge beam supports especially indicates a roof beam support is prevented falling by radial cable of annular.
Background
Since the 20 th century, more than 6 earthquake grades occur in China nearly 800 times, and the earthquake is distributed in all provinces and urban areas except the Guizhou, Jiangzhe and Zhejiang provinces and hong Kong special administrative areas. China has high frequency, high intensity, shallow seismic source and wide distribution of seismic activity, and is a country with serious earthquake disasters. The bridge plays an extremely important role in emergency rescue and post-disaster recovery and reconstruction after an earthquake occurs. The bridge is seriously damaged or collapsed due to a strong earthquake, so that serious traffic interruption is caused, the earthquake relief work is blocked, the greater loss of life and property is caused, and the earthquake damage degree is enlarged. Girder dropping is a frequent and most serious seismic hazard of bridges. The main reason for the damage of the falling beam is that the relative displacement between the beam and the pier (platform) is too large, and when the support is subjected to the displacement limit exceeding the support, the support is damaged, so that the upper structure of the bridge is separated from the support. The design rules for earthquake resistance of highway bridges (JTG/TB 02-01-2008) clearly propose that a reasonable limiting device is adopted in an 8-degree area to prevent adjacent structural members from generating overlarge relative displacement. The urban bridge earthquake-resistant design specification (CJJ166-2011) also indicates that a limiting device is arranged in an 8-degree area to control the displacement of the beam pier.
The technical personnel have successively researched lead rubber support, friction pendulum body support (FPS), pull-cable type anti-falling beam support and the like, and the pull-cable type support is widely accepted in numerous engineering examples because of the outstanding advantages of effectively resisting vibration impact, generating smaller secondary internal force when resisting impact and the like. The conventional stay cable type beam falling prevention support executes stay cable seismic isolation support and application technology (local standard DB51/T2241-2016 in Sichuan province) in reference. With the wide application of the stay cable type anti-falling beam support, certain problems of the stay cable type anti-falling beam support are also shown, firstly, a steel wire rope clamp is adopted at the joint of the stay cable, the fixed distance of the steel wire rope clamp is 6-7 times of the diameter of the steel wire rope, for the support with larger anti-falling beam force, the support usually needs the stay cables with larger diameter and more groups, the fixed distance of the rope clamp is large, and the problems that the distance of the fixed rope clamp is larger than the travel of the stay cable or the travel of the stay cable is insufficient exist; secondly, in order to ensure enough travel of the inhaul cable, the anchoring distance of the cable clamp is not in accordance with the requirement, the anchoring performance is poor, the beam falling prevention force of the support cannot be achieved, and the actual beam falling prevention function cannot be achieved; thirdly, as the inhaul cable with a larger diameter is adopted, the flexibility of the inhaul cable is poor, the hardness is improved, the inhaul cable is not favorable for installation and often needs external equipment for assistance; fourthly, as more groups of inhaul cables are needed, the number of fixed rope clamps is increased, more workers are often needed to fasten the rope clamps, the workload is increased, and the labor and the time are wasted; fifthly, in the actual use process of the large-tonnage support, the stay cable is not flexible enough to move, and the support is limited to move in the effective stay cable stroke.
Because the stay cable is a through long stay cable, the stay cables on the two sides of the support bear the same force according to the force transmissibility, and the number of the stay cables needed is often large. In the existing annular stay cable support, a steel wire rope is spirally wound into an integral annular structure or an annular structure formed by splicing multiple sections; because the steel wire rope is spirally wound into a ring shape, the steel wire rope needs to be spirally wound in the installation process, the steel wire rope has certain toughness, the operation is difficult, the installation is complicated, and the operation is more difficult if the height of the support is lower and the travel of the stay cable is smaller; the equal circumference of each spiral structure cannot be ensured; meanwhile, as the two ends of the steel wire rope are open, additional anchoring is needed.
For the reasons, the research and development of the support which has good performance, compact structure and easy assembly and can effectively protect the bridge in the earthquake not only meets the practical needs in engineering application, but also is the clear requirement and the technical development direction of the technical specification of the industry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a roof beam support is prevented falling by radial cable of annular, its assembly is more convenient, and the anchor dependable performance can better bear the load that causes wire rope because of the earthquake.
The whole technical concept of the utility model is that:
the annular radial stay rope beam falling prevention support comprises an upper seat plate and a lower seat plate, wherein a steel wire rope damping device is connected between the upper seat plate and the lower seat plate; the steel wire rope damping device comprises a jointless steel wire rope ring which is distributed between the upper seat plate and the lower seat plate at intervals, and the jointless steel wire rope ring is connected with the upper seat plate or the lower seat plate through a pressing strip respectively.
The endless steel wire rope loop is a circular ring-shaped rigging which is formed by weaving and coiling steel wire ropes serving as raw materials through a special process and is mainly used for hoisting. When the jointless rope loop is used in a working place in a humid or open-air environment and the like, a galvanized steel wire rope can be used as a raw material to enhance the antirust performance. The endless loop is mainly broken gradually due to metal fatigue caused by repeated bending while passing around the hook and the object to be hung, so the ratio of the diameters of the hook or the object to be hung and the endless loop is an important factor for determining the service life of the endless loop. The surface layer of the endless rope should be discarded when the abrasion and corrosion degree or the number of broken wires per twist pitch exceeds a predetermined value. Since the jointless wire rope loop belongs to the prior art, the applicant does not describe the structure thereof again here.
The specific technical concept of the utility model is that:
the utility model discloses not only be applicable to the ball-type support, also be applicable to including the basin formula support, subtract various types of supports such as shock insulation type support, preferred technical scheme lies in, go up and be equipped with between bedplate and the lower bedplate rather than sliding fit's spherical crown body or slide.
In order to facilitate the production of the pressing strip and the effective positioning of the pressing strip on the jointless steel wire rope, the preferable technical scheme is that the pressing strip is arc-shaped or straight-line-shaped and is matched with the support, and a groove capable of accommodating the jointless steel wire rope ring is arranged in the pressing strip. The diameter or number of the endless wire rope loops can be chosen according to the actual load requirements. In order to ensure that the upper and lower structures are limited to swing within the design range under the action of an earthquake, the pressing strip is firmly connected with the upper and lower seat plates into a whole, so that the upper and lower structures drive the upper and lower seat plates to move in the jointless steel wire rope rings under the action of the earthquake, the upper and lower structures can be limited to swing within the design range, the arrangement of the multiple groups of rope rings can resist the horizontal force of the earthquake, the damage of overlarge displacement and beam falling of the upper structure of the support is prevented, and the safety of the structure is ensured.
In order to reduce the damage of the groove to the jointless steel wire rope ring, the preferable technical scheme is that two ends of the groove are provided with chamfers with smooth surfaces.
The batten and the upper and lower seat plates can adopt various existing fixing modes, wherein the preferable technical implementation means is that the fixing of the batten and the upper and lower seat plates comprises but is not limited to one or combination of bolts, screws, flanges and clamping fit.
The inner surface of the upper seat plate is provided with a shear bolt or a shear pin. The shear plate has the function of serving as a barrier strip under the normal use of the support, has the limiting function in the non-sliding direction, has the guiding function in the unidirectional sliding support, and meets the temperature change displacement of the support under the normal working condition; when earthquake happens, when the horizontal force exceeds the bearing value of the shear bolts or the shear pins, the shear bolts or the shear pins are cut off, part of earthquake energy can be consumed, the upper and lower seat plates are driven by the upper and lower part structures to move in the rope ring under the action of the earthquake, and the upper and lower part structures can be limited to swing within the design range.
The applicant needs to state that:
in the description of the present invention, the terms "upper", "lower", "inner", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of simplifying the description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The utility model discloses what obtain shows technological progress lies in:
1. the utility model adopts the jointless steel wire rope ring as the main component of the steel wire rope damping device, which can form a complete closed loop structure, does not need a rope clamp during installation, reduces working procedures and saves labor; due to the characteristics of the jointless rope ring, the rope has the advantages of soft and smooth rope body, convenience in installation, attractive appearance, compact structure and no need of independent anchoring of the end head.
2. Utilize the layering to be connected rope circle and upper and lower bedplate for lower part structure drives about the bedplate moves about in the rope circle under the effect of earthquake, can restrict the lower part structure and swing in the design range, and the setting of multiunit rope circle can resist earthquake horizontal force, prevents that support superstructure from taking place the harm of too big displacement and falling the roof beam, has guaranteed the safety of structure.
3. The non-joint rope rings are uniformly distributed in an annular radial or rectangular shape, so that the stress is more accurate. The former product is a steel wire rope which is encircled into a ring and is distributed around the support, and the stress is different from the actual stress; the utility model provides a no joint wire rope is independent cyclic annular range and wholly is the effect of annular or rectangle equipartition more stable.
4. The process of straightening the jointless rope loop from a natural state to a stressed state can resist certain seismic energy due to the characteristics of the material, and has a certain damping effect.
5. The edge of the groove of the pressing strip is provided with a smooth chamfer, so that stress concentration is reduced, and a rope ring of the jointless steel wire rope is better protected; meanwhile, the flexible movement between the pressing strip and the jointless steel wire rope ring is ensured.
6. By adopting the pressing strip structure, the upper and lower support plates do not need to be processed with through long grooves, the thickness of the upper and lower support plates is reduced, the weight of the support is reduced, and the cost is saved.
7. Because each non-joint rope ring is completely independent, the non-joint rope rings can bear corresponding earthquake force respectively, and a certain number of non-joint rope rings can be reduced; the endless rope loop passes through the annular or linear pressing strip instead of passing through the whole support, so that the actual circumference of the endless rope loop is smaller, and the cost is saved.
Drawings
Fig. 1 is a vertical sectional view of the present invention.
Fig. 2 is a view from a-a of fig. 1.
Fig. 3 is a schematic view of the external profile of another structure of the present invention.
Fig. 4 is an elevational cross-sectional view of fig. 3.
Fig. 5 is a view from B-B of fig. 3.
Fig. 6 is a schematic view of the outer contour of another endless wire rope loop and bead of the present invention.
Fig. 7 is an elevational cross-sectional view of fig. 6.
The reference numbers in the drawings are as follows:
1. layering; 2. an upper seat plate; 3. a jointless wire rope loop; 4. shear bolts or shear pins; 5. a lower seat plate.
Detailed Description
The present invention is further described with reference to the following examples, which should not be construed as limiting the scope of the present invention, but the scope of the present invention is defined by the following claims, and any equivalent technical means made according to the description should not be construed as departing from the scope of the present invention.
Example 1
The overall structure of the present embodiment is shown in fig. 1-2, which includes an upper seat plate 2 and a lower seat plate 5, a spherical crown body sliding fitted with the upper seat plate 2 and the lower seat plate 5 is disposed between the upper seat plate 2 and the lower seat plate 5, and a steel wire rope damping device is connected between the upper seat plate 2 and the lower seat plate 5; the steel wire rope damping device comprises a jointless steel wire rope ring 3 which is annularly distributed between the upper seat plate 2 and the lower seat plate 5 at equal angle intervals, and the jointless steel wire rope ring 3 is respectively connected with the upper seat plate 2 or the lower seat plate 5 through a pressing strip 1.
The pressing strip 1 is internally provided with a groove which can contain the jointless steel wire rope ring 3.
The jointless cable loops 3 in the grooves can be selected from one or more according to the requirements of the load.
And chamfer angles with smooth surfaces are arranged at two ends of the groove.
The fixing of the pressing strip 1 to the upper seat plate 2 and the lower seat plate 5 includes, but is not limited to, using one or a combination of bolts, screws, flanges, and a clamping fit.
The pressing strip 1 is in an arc shape matched with the support.
The inner surface of the upper seat plate 1 is provided with shear bolts or shear pins 4.
Example 2
The overall structure of the present embodiment is shown in fig. 3-5, which includes an upper seat plate 2 and a lower seat plate 5, a spherical crown body sliding fitted with the upper seat plate 2 and the lower seat plate 5 is disposed between the upper seat plate 2 and the lower seat plate 5, and a steel wire rope damping device is connected between the upper seat plate 2 and the lower seat plate 5; the steel wire rope damping device comprises a jointless steel wire rope ring 3 which is distributed between the upper seat plate 2 and the lower seat plate 5 at intervals, and the jointless steel wire rope ring 3 is respectively connected with the upper seat plate 2 or the lower seat plate 5 through a pressing strip 1.
The pressing strip 1 is internally provided with a groove which can contain the jointless steel wire rope ring 3.
The jointless cable loops 3 in the grooves can be selected from one or more according to the requirements of the load.
And chamfer angles with smooth surfaces are arranged at two ends of the groove.
The fixing of the pressing strip 1 to the upper seat plate 2 and the lower seat plate 5 includes, but is not limited to, using one or a combination of bolts, screws, flanges, and a clamping fit.
The pressing strip 1 is in a linear shape matched with the support.
Shear bolts or shear pins 4 are arranged between the inner surfaces of the upper seat plates 1.
The structure of the jointless cable ring 3 and the pressing strip 1 in this embodiment may also be the structure shown in fig. 6-7, that is, the pressing strip 1 is a linear structure, and the jointless cable ring 3 is accommodated in the groove of the pressing strip 1 and then is connected and positioned with the outer edges of the upper seat plate 2 and the lower seat plate 5.
Example 3
The overall structure of the present embodiment is shown in fig. 6-7, wherein the bead 1 is a linear structure, and the jointless steel wire rope ring 3 is accommodated in the groove of the bead 1 and then is connected and positioned with the outer edges of the upper seat plate 2 and the lower seat plate 5.
The outer edges of the upper seat plate 2 and the lower seat plate 5 are provided with smooth chamfers for protecting the endless rope loop 3.
The rest of the structure of this example is the same as example 2.
Claims (4)
1. The annular radial stay rope beam falling prevention support comprises an upper seat plate (2) and a lower seat plate (5), wherein a steel wire rope damping device is connected between the upper seat plate (2) and the lower seat plate (5); the steel wire rope damping device is characterized by comprising a non-joint steel wire rope ring (3) distributed between an upper seat plate (2) and a lower seat plate (5) at intervals, wherein the non-joint steel wire rope ring (3) is respectively connected with the upper seat plate (2) or the lower seat plate (5) through a pressing strip (1), the pressing strip (1) is in an arc shape or a straight line shape matched with a support, a groove capable of containing the non-joint steel wire rope ring (3) is arranged in the pressing strip (1), and smooth chamfers are arranged at two ends of the groove.
2. An annular radial bracing drop-proof beam support according to claim 1, characterized in that a spherical crown body or a sliding plate in sliding fit with the upper seat plate (2) and the lower seat plate (5) is arranged between the upper seat plate and the lower seat plate.
3. An annular radial guy drop beam support according to claim 1 or 2, characterized in that the inner surface of the upper seat plate (2) is provided with shear bolts or shear pins (4).
4. The radial ring type stay rope falling prevention beam support seat as claimed in claim 1 or 2, wherein the fixing of the pressing bar (1) with the upper seat plate (2) and the lower seat plate (5) comprises but is not limited to using one or a combination of bolts, screws, flanges and clamping fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922249233.6U CN212200037U (en) | 2019-12-15 | 2019-12-15 | Ring-shaped radial stay rope beam falling prevention support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922249233.6U CN212200037U (en) | 2019-12-15 | 2019-12-15 | Ring-shaped radial stay rope beam falling prevention support |
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| Publication Number | Publication Date |
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| CN212200037U true CN212200037U (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922249233.6U Active CN212200037U (en) | 2019-12-15 | 2019-12-15 | Ring-shaped radial stay rope beam falling prevention support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116087338A (en) * | 2023-04-10 | 2023-05-09 | 四川省地质矿产勘查开发局一0六地质队 | Construction method of rock brittle fracture precursor index |
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2019
- 2019-12-15 CN CN201922249233.6U patent/CN212200037U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116087338A (en) * | 2023-04-10 | 2023-05-09 | 四川省地质矿产勘查开发局一0六地质队 | Construction method of rock brittle fracture precursor index |
| CN116087338B (en) * | 2023-04-10 | 2023-07-14 | 四川省地质矿产勘查开发局一0六地质队 | Construction method of rock brittle fracture precursor index |
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