CN211947895U - Communicating type inhaul cable limiter - Google Patents
Communicating type inhaul cable limiter Download PDFInfo
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- CN211947895U CN211947895U CN201922218104.0U CN201922218104U CN211947895U CN 211947895 U CN211947895 U CN 211947895U CN 201922218104 U CN201922218104 U CN 201922218104U CN 211947895 U CN211947895 U CN 211947895U
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- fixing column
- limiting
- cable
- inhaul cable
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Abstract
The invention discloses a communicating inhaul cable limiter which comprises a first connecting plate, a second connecting plate and an inhaul cable, the first connecting plate is used for connecting the bottom of the beam, the second connecting plate is used for connecting the top of the pier, the first connecting plate is provided with a first fixing column, the second connecting plate is provided with a second fixed column, the inhaul cable is wound on the first fixed column and the second fixed column, two first limiting rings are respectively arranged on the two sides of the first fixing column corresponding to the winding part, two second limiting rings are respectively arranged on the two sides of the second fixing column corresponding to the winding part, can effectively limit the bidirectional relative displacement between the pier and the beam under the action of the earthquake, prevent the beam from falling, meanwhile, the stopper can be ensured not to restrict the deformation of the bridge in the normal use state by arranging the free path, the pier bottom can be protected from bending damage and shearing damage by designing the relation between the force of the stopper and the displacement.
Description
Technical Field
The application relates to the technical field of bridges and earthquakes, in particular to a communicated type inhaul cable limiter.
Background
The support arrangement form mainly adopted by the small and medium span bridges in China is a full-bridge arrangement plate type rubber support or a middle pier plate type rubber support, and a side pier tetrafluoro slide plate rubber support. The bridge type is characterized in that the support, the beam body and the bridge pier are not connected at all, horizontal seismic force is transmitted only by friction, the support can generate large displacement in the earthquake, and serious disasters such as beam falling, collision and the like are often caused. At present, the limiting devices commonly used in China comprise a steel plate limiting device, a prestressed steel strand limiting device and a cable limiting device which are respectively a steel plate limiting device, a prestressed steel strand limiting device and a cable limiting device.
The inventor finds that the steel plate limiting device can limit the pier-beam relative displacement caused by temperature change and the like under the normal use state of the bridge, so that the limiting device or the bridge structure is damaged; although this problem can be avoided through reserving initial lax volume to prestressing force steel strand wires stop device and cable stop device, nevertheless because these two kinds of stop device's theory of operation is that the restoring force that produces is tightened through steel strand wires or cable plays spacing effect, can only restrict the displacement of girder in single direction, when the mound roof beam relative displacement of opposite direction appears, steel strand wires or cable can be in the lax state, can not produce the restoring force, consequently, be difficult to satisfy the demand that the cable stop device in same bridge both sides of striding plays limiting displacement simultaneously.
Disclosure of Invention
The purpose of this application is to the defect that prior art exists, provides a intercommunication formula cable stopper, can effectively restrict the earthquake effect down two-way relative displacement between mound, the roof beam, prevent to take place to fall the roof beam, can also guarantee simultaneously through setting up the free path that the stopper can not retrain the deformation that the bridge takes place under normal use state, can be through the relation of design stopper power and displacement, the protection does not take place bending failure and shearing failure at the bottom of the mound.
In order to realize the purpose, the following technical scheme is adopted:
a communicated stay cable limiter comprises a first connecting plate, a second connecting plate and a stay cable, wherein the first connecting plate is used for connecting a beam bottom, the second connecting plate is used for connecting a pier top, the first connecting plate is provided with a first fixing column, the second connecting plate is provided with a second fixing column, the inhaul cable is wound on the first fixing column and the second fixing column, is used for forming a winding part to connect the first fixing column with the second fixing column, two first limiting rings are respectively arranged on the two sides of the first fixing column corresponding to the winding part, a gap is reserved between each first limiting ring and the winding part, used for limiting the stay cable to slide in a limited range along the axial direction of the first fixed column, two second limiting rings are respectively arranged on the second fixed column corresponding to the two sides of the winding part, and a gap is reserved between the second limiting ring and the winding part and used for limiting the inhaul cable to slide in a limited range along the axial direction of the second fixing column.
Furthermore, first connecting plate cooperation has first pre-buried board for bury underground at the bottom of the beam in advance inside, first connecting plate passes through first pre-buried board and connects at the bottom of the beam, the cooperation of second connecting plate has second pre-buried board for bury underground in advance inside the mound top, the mound top is connected through second pre-buried board to the second connecting plate.
Furthermore, the first embedded plate and the first connecting plate are fixedly connected through a threaded fastener, and the second connecting plate and the second embedded plate are fixedly connected through a threaded fastener.
Furthermore, two first connecting plates are arranged oppositely, and two ends of the first fixing column are respectively connected with the two first connecting plates; the second connecting plates are two and are arranged oppositely, and two ends of the second fixing column are connected with the two second connecting plates respectively.
Furthermore, the axes of the first fixing column and the second fixing column are arranged in parallel, and a gap is reserved between the first fixing column and the second fixing column.
Furthermore, the first limiting ring and the second limiting ring are identical in structure and are annular structures formed by butt joint of two semicircular rings, and the centripetal side of the first limiting ring is attached to the first fixing column or the second fixing column.
Further, the semicircular rings are butted through fasteners and used for limiting the relative sliding of the first limiting ring along the first fixing column and limiting the relative sliding of the second limiting ring along the second fixing column.
Furthermore, the inhaul cables are distributed along the axial direction of the first fixing column and the second fixing column in a winding mode one by one to form a single-layer multi-turn structure.
Further, the inhaul cable is made of steel strands, high-strength steel wire ropes or carbon fiber bundles.
Furthermore, the two first limiting rings can respectively slide relatively along the first fixing column to adjust the distance between the two first limiting rings, and the two second limiting rings can respectively slide relatively along the second fixing column to adjust the distance between the two second limiting rings.
Compared with the prior art, the application has the advantages and positive effects that:
(1) through the surrounding arrangement mode of the guy cables, the guy cables can be tightened to provide restoring force in two directions of the longitudinal bridge when an earthquake occurs, so that the relative displacement between the pier beams is limited within a controllable range, the beams are prevented from falling, a free path can be set by adjusting the length of the guy cables, and the requirement of the longitudinal displacement of the bridge in a normal working state is met;
(2) the transverse free path of the limiter can be designed by adjusting the transverse gap between the limiting ring and the inhaul cable. Through the design of the parameters, the scheme can meet the limit requirements under different structural forms and earthquake motion parameters;
(3) compared with limit devices such as a stop block, the inhaul cable device is clear in constitutive relation, definite in force transmission path, capable of determining designed displacement through calculation, capable of achieving balance of force and displacement and capable of protecting the bottom of the pier from bending damage and shearing damage.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a front view of a cable stopper according to embodiment 1 of the present application;
fig. 2 is a side view of a cable stopper according to embodiment 1 of the present application;
fig. 3 is a transverse cross-sectional view of a cable stopper according to embodiment 1 of the present application;
fig. 4 is a schematic position view of the cable stopper of embodiment 1 of the present application arranged on a bridge;
FIG. 5 is a schematic view of the cable stop of embodiment 1 of the present application in cooperation with a beam bottom and a pier top;
FIG. 6 is a schematic structural view of the cable stopper according to embodiment 1 of the present application when deforming under restraint;
fig. 7 is a side view of the cable stopper according to embodiment 1 of the present application when restrained from deforming.
Wherein: 1-a first embedded plate, 2-a second embedded plate, 3-a first connecting plate, 4-a second connecting plate, 5-a stay cable, 6-a cable clamp, 7-a limiting ring, 8-a fastening bolt and 9-an anchoring bolt.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As introduced in the background art, the steel plate limiter in the prior art can limit the relative displacement of the pier beam caused by temperature change and the like in the normal use state of the bridge, so that the limiting device or the bridge structure is damaged; although this problem can be avoided through reserving initial lax volume to prestressing force steel strand wires stop device and cable stop device, nevertheless because these two kinds of stop device's theory of operation is that the restoring force that produces is tightened through steel strand wires or cable plays spacing effect, can only restrict the displacement of girder in single direction, when the mound roof beam relative displacement of opposite direction appears, steel strand wires or cable can be in the lax state, can not produce the restoring force, consequently, be difficult to satisfy the demand that the cable stop device in same bridge both sides of striding played limiting displacement simultaneously, to above-mentioned technical problem, the application provides a intercommunication formula cable stopper.
Example 1
In a typical embodiment of the present application, as shown in fig. 1, a communication type cable stopper is proposed.
On the intercommunication type cable stopper installation bridge, the bridge girder roof beam body sets up the built-in plate with mound top or bent cap top, installs first connecting plate, second connecting plate on the built-in plate, walks around first connecting plate and second connecting plate with the cable clip tight tightly, is equipped with the spacing ring on first connecting plate and second connecting plate, constitutes the cable stopper to play two-way spacing and indulge, the different effect of the spacing free range of horizontal cable.
Specifically, the communicated inhaul cable limiter comprises a first connecting plate 3, a second connecting plate 4 and an inhaul cable 5, the first connecting plate is used for connecting the bottom of the beam, the second connecting plate is used for connecting the top of the pier, the first connecting plate is provided with a first fixing column, the second connecting plate is provided with a second fixed column, the inhaul cable is wound on the first fixed column and the second fixed column, is used for forming a winding part to connect the first fixing column with the second fixing column, two first limiting rings 7 are respectively arranged on the two sides of the first fixing column corresponding to the winding part, a gap is reserved between each first limiting ring and the winding part, used for limiting the stay cable to slide in a limited range along the axial direction of the first fixed column, two second limiting rings are respectively arranged on the second fixed column corresponding to the two sides of the winding part, a gap is reserved between the second limiting ring and the winding part and used for limiting the inhaul cable to slide in a limited range along the axial direction of the second fixing column;
the first connecting plate is matched with a first embedded plate 1 and used for being embedded in the beam bottom in advance, the first connecting plate is connected with the beam bottom through the first embedded plate, the second connecting plate is matched with a second embedded plate 2 and used for being embedded in the pier top in advance, and the second connecting plate is connected with the pier top through the second embedded plate.
With reference to fig. 1, the bottom of the first connecting plate is welded with a base, the base is provided with a bolt hole, the first embedded plate and the first connecting plate are fixedly connected through a threaded fastener, the bottom of the second connecting plate is welded with a base, the base is also provided with a threaded hole, the second embedded plate and the second connecting plate are fixedly connected through a threaded fastener, and the threaded fastener selects the anchor bolt 9.
It is understood that the first connecting plate and the second connecting plate can be connected with the bridge in various modes, the arrangement of two embedded plates can be omitted, the two connecting plates are respectively connected with the beam bottom and the pier top, and the mode can be a mode of welding a steel structure in the beam bottom or anchoring bolts.
Furthermore, two first connecting plates are arranged oppositely, and two ends of the first fixing column are respectively connected with the two first connecting plates; the two second connecting plates are oppositely arranged, and two ends of the second fixing column are respectively connected with the two second connecting plates; the first fixing column and the second fixing column are connected in a welding mode, so that the connection rigidity is ensured;
furthermore, the first limiting ring and the second limiting ring are identical in structure and are annular structures formed by butting two semicircular rings, and the centripetal side of the first limiting ring is attached to the first fixing column or the second fixing column; the semicircular rings are butted through fasteners and used for limiting the relative sliding of the first limiting ring along the first fixing column and limiting the relative sliding of the second limiting ring along the second fixing column; the fastening piece is a fastening bolt 8.
The two first limiting rings can respectively slide relatively along the first fixing column to adjust the distance between the two first limiting rings, and the two second limiting rings can respectively slide relatively along the second fixing column to adjust the distance between the two second limiting rings.
Through adjusting the position of first spacing ring and second spacing ring to adjust the sliding range of cable on first fixed column and second fixed column, adjust its free path, can not retrain the deformation that the bridge takes place under normal use state.
It should be pointed out especially that one of the technical essential of this application is the mode of being connected of cable and first connecting plate, second connecting plate in the stopper. Referring to fig. 1, 3, 6 and 7, when an earthquake occurs, the first connecting plate 3 and the second connecting plate 4 of the stopper will generate relative displacement, and when the relative displacement exceeds a preset stroke, the cable 5 starts to deform and tighten under stress, and generates restoring force to play a role in limiting. After the earthquake is finished, the stay cable is gradually returned to the initial arrangement state;
the second technical essential of this application is the equipment and the arrangement mode of cable 5, leads to long cable 5 and confirms the total length according to design size, then directly turns round the winding on first fixed column and the second fixed column that first connecting plate 3 and second connecting plate 4 correspond one by one, and single cable turns round winding mode one by one can make the cable adjust the size of single circle by oneself under the earthquake action, has also ensured simultaneously that the cable has sufficient elongation, can not broken by the stretch.
Preferably, the stay cable is made of a steel strand, a high-strength steel wire rope or a carbon fiber bundle.
Of course, it is understood that, since the distance between the bridge bodies and the bridge piers of different bridges is different, the limiting force and the limiting distance to be applied are also uncertain, and therefore: the inhaul cable is formed by winding a single inhaul cable according to the designed shape and size and is connected into a ring through the anchoring device; the length of the stay cable is indefinite, and different lengths can be selected according to requirements; the diameter of the stay cable is not fixed, and different sizes can be selected according to requirements; the adjustable rubber bearing is adjusted according to requirements, is suitable for various medium and small span continuous beam bridges using rubber bearings, and plays a limiting role.
Example 2
Another exemplary embodiment of the present application further provides an installation method of the cable stopper, including the following steps:
the method comprises the following steps: arranging a first embedded plate 1 at the bottom of the beam, arranging a second embedded plate 2 at the top of the bent beam, and welding reinforcing steel bars with hooks on the back surfaces of the first embedded plate and the second embedded plate;
step two: the first connecting plate 3 is fixed below the first embedded plate 1 through an anchor bolt 9, and the second connecting plate 4 is fixed on the second embedded plate 2 through the anchor bolt 9;
step three: the full-length limiting inhaul cable 5 determines the total length according to the design size, then is directly wound on the first fixing column and the second fixing column corresponding to the first connecting plate 3 and the second connecting plate 4 in a circle by circle mode, and is clamped tightly through the cable clamp 6;
step four: and a first limiting ring and a second limiting ring 7 are arranged on the fixing columns of the upper connecting plate and the lower connecting plate according to the designed size and are locked by fastening bolts 8.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A communicated inhaul cable limiter is characterized by comprising a first connecting plate, a second connecting plate and an inhaul cable, the first connecting plate is used for connecting the bottom of the beam, the second connecting plate is used for connecting the top of the pier, the first connecting plate is provided with a first fixing column, the second connecting plate is provided with a second fixed column, the inhaul cable is wound on the first fixed column and the second fixed column, is used for forming a winding part to connect the first fixing column with the second fixing column, two first limiting rings are respectively arranged on the two sides of the first fixing column corresponding to the winding part, a gap is reserved between each first limiting ring and the winding part, used for limiting the stay cable to slide in a limited range along the axial direction of the first fixed column, two second limiting rings are respectively arranged on the second fixed column corresponding to the two sides of the winding part, and a gap is reserved between the second limiting ring and the winding part and used for limiting the inhaul cable to slide in a limited range along the axial direction of the second fixing column.
2. The connected cable stopper according to claim 1, wherein the first connecting plate is fitted with a first pre-buried plate for being embedded in the inside of the beam bottom in advance, the first connecting plate is connected to the beam bottom through the first pre-buried plate, the second connecting plate is fitted with a second pre-buried plate for being embedded in the inside of the pier top in advance, and the second connecting plate is connected to the pier top through the second pre-buried plate.
3. The connected cable stopper of claim 2, wherein the first pre-buried plate and the first connecting plate are fixedly connected by a threaded fastener, and the second connecting plate and the second pre-buried plate are fixedly connected by a threaded fastener.
4. The connecting type inhaul cable limiter according to claim 1, wherein the two first connecting plates are oppositely arranged, and two ends of the first fixing column are respectively connected with the two first connecting plates; the second connecting plates are two and are arranged oppositely, and two ends of the second fixing column are connected with the two second connecting plates respectively.
5. The connecting type inhaul cable limiter of claim 4, wherein the axes of the first fixing column and the second fixing column are arranged in parallel, and a gap is reserved between the first fixing column and the second fixing column.
6. The connecting type inhaul cable limiter of claim 1, wherein the first limiting ring and the second limiting ring are identical in structure and are annular structures formed by butting two semicircular rings, and the centripetal side of the first limiting ring is attached to the first fixing column or the second fixing column.
7. The connected cable stopper of claim 6, wherein the semi-circular rings are abutted by fasteners for limiting relative sliding of the first stopper ring along the first anchor post and limiting relative sliding of the second stopper ring along the second anchor post.
8. The communication type inhaul cable limiter according to claim 1, wherein the inhaul cable is distributed along the axial direction of the first fixed column and the second fixed column in a winding mode one by one to form a single-layer multi-turn structure.
9. The connected cable stopper of claim 8, wherein the cable is made of a steel strand, a high strength steel wire rope, or a carbon fiber bundle.
10. The connecting type inhaul cable limiter as claimed in claim 1, wherein the two first limiting rings can slide relatively along the first fixing posts respectively to adjust the distance between the two first limiting rings, and the two second limiting rings can slide relatively along the second fixing posts respectively to adjust the distance between the two second limiting rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922218104.0U CN211947895U (en) | 2019-12-11 | 2019-12-11 | Communicating type inhaul cable limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922218104.0U CN211947895U (en) | 2019-12-11 | 2019-12-11 | Communicating type inhaul cable limiter |
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| Publication Number | Publication Date |
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| CN211947895U true CN211947895U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922218104.0U Active CN211947895U (en) | 2019-12-11 | 2019-12-11 | Communicating type inhaul cable limiter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957783A (en) * | 2021-11-30 | 2022-01-21 | 山东省交通规划设计院集团有限公司 | Shock attenuation cable stopper |
-
2019
- 2019-12-11 CN CN201922218104.0U patent/CN211947895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957783A (en) * | 2021-11-30 | 2022-01-21 | 山东省交通规划设计院集团有限公司 | Shock attenuation cable stopper |
| CN113957783B (en) * | 2021-11-30 | 2023-09-22 | 山东省交通规划设计院集团有限公司 | Shock attenuation cable stopper |
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Address after: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Patentee after: Shandong transportation planning and Design Institute Group Co.,Ltd. Patentee after: TONGJI University Address before: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Patentee before: Shandong transportation planning and Design Institute Co.,Ltd. Patentee before: TONGJI University |
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