CN112761063A - Flat pendulum type shock insulation support with beam falling prevention function - Google Patents
Flat pendulum type shock insulation support with beam falling prevention function Download PDFInfo
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- CN112761063A CN112761063A CN202110061584.3A CN202110061584A CN112761063A CN 112761063 A CN112761063 A CN 112761063A CN 202110061584 A CN202110061584 A CN 202110061584A CN 112761063 A CN112761063 A CN 112761063A
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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
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a flat pendulum type shock insulation support with a beam falling prevention function, which comprises an upper sliding plate, an upper support plate, a spherical crown lining plate and a lower support plate which are sequentially arranged from top to bottom, wherein sliding friction pairs are respectively arranged between the upper sliding plate and the upper support plate, between the upper support plate and the spherical crown lining plate and between the spherical crown lining plate and the lower support plate; the lower surface of the upper sliding plate is provided with a circular sinking groove, the upper surface of the upper support plate is provided with a circular clamping tenon in clearance fit with the circular sinking groove, and the circular sinking groove and the circular clamping tenon are eccentrically arranged. The invention solves the problems that the existing support can not achieve the seismic isolation and reduction of the upper and lower structures of the building in the actual working process, and the multidirectional movable support can not reasonably limit the relative displacement range between the upper and lower parts of the support and the upper and lower structures of the bridge (or the building).
Description
Technical Field
The invention belongs to the technical field of seismic isolation and reduction of buildings and bridges, and particularly relates to a flat pendulum type seismic isolation support with a beam falling prevention function.
Background
The support is an important part for connecting the upper structure and the lower structure of a bridge and a building, and can transmit the counter force and the deformation (displacement and corner) of the upper structure to the lower structure, so that the stress condition of the structure conforms to a theoretical calculation diagram. Firstly, the support must have sufficient load-bearing capacity to ensure a safe and reliable transmission of the counter-forces (vertical and horizontal forces) of the support. Secondly, the restraint of the support on the structure (displacement and rotation angle) is as small as possible so as to adapt to the requirement of free expansion and rotation of the beam body. In addition, the bridge bearings are to be easy to install, maintain and repair and to be able to be replaced if necessary.
The bridge and building support used at present mainly comprises a common support, and the support is divided into a fixed support, a one-way movable support and a multi-way movable support according to the deformation possibility. But the common support has single function, does not have the functions of shock absorption and isolation and the like, can not completely meet the functional requirements of bridges and building structures, and has larger limitation. Especially, the multi-directional movable support saddle can not limit the relative displacement range between the upper part and the lower part of the support saddle and between the upper part and the lower part of the bridge and the structure of the upper part and the lower part of the building, so that the upper part and the lower part of the support saddle, the bridge and the structure of the upper part and the lower part of the building can be damaged due to overlarge displacement, and even a beam falling accident can occur.
Disclosure of Invention
The invention aims to provide a flat pendulum type shock insulation support with a beam falling prevention function, and solves the problems that the existing support cannot achieve shock insulation of a lower structure on a building in the actual working process, a multidirectional movable support cannot reasonably limit the relative displacement range between the upper part and the lower part of the support and the lower structure on a bridge (or a building), and the like.
In order to achieve the purpose, the invention provides the following technical scheme:
flat pendulum formula shock insulation support with prevent falling roof beam function, its characterized in that: the spherical crown lining plate comprises an upper sliding plate 1, an upper support plate 2, a spherical crown lining plate 3 and a lower support plate 4 which are sequentially arranged from top to bottom, wherein sliding friction pairs are arranged between the upper sliding plate 1 and the upper support plate 2, between the upper support plate 2 and the spherical crown lining plate 3 and between the spherical crown lining plate 3 and the lower support plate 4; the lower surface of the upper sliding plate 1 is provided with a circular sinking groove 11, the upper surface of the upper support plate 2 is provided with a circular clamping tenon 21 in clearance fit with the circular sinking groove 11, and the circular sinking groove 11 and the circular clamping tenon 21 are eccentrically arranged.
Further, the lower surface of the upper support plate 2 is provided with a spherical crown concave surface matched with the spherical crown surface of the spherical crown lining plate 3.
Further, be equipped with the recess on the bottom suspension bedplate 4, spherical crown welt 3 and upper bracket board 2 all are located the recess, the lateral wall of spherical crown welt 3 and upper bracket board 2 with the inner wall of recess forms certain clearance.
Further, the groove on the lower support plate 4 is circular.
Furthermore, a wear-resistant plate is arranged on the spherical crown type concave surface of the upper support plate 2, a stainless steel plate is arranged on the spherical crown surface of the spherical crown lining plate 3, and the wear-resistant plate and the stainless steel plate form a sliding friction pair; the lower surface of the spherical crown lining plate 3 is provided with a wear-resistant plate, the upper surface of the lower support plate 4 is provided with a stainless steel plate, and the wear-resistant plate and the stainless steel plate form a sliding friction pair; the lower surface of the upper sliding plate 1 is provided with a stainless steel plate, the upper surface of the upper support plate 2 is provided with an abrasion-resistant plate, and the abrasion-resistant plate and the stainless steel plate form a sliding friction pair.
Further, the isolation bearing still includes shear pin 5, upper sliding plate 1 and upper bracket board 2 all are equipped with the round pin shaft hole, the upper and lower end of shear pin 5 is inserted respectively in the round pin shaft hole of upper sliding plate 1 and upper bracket board 2, and for transition fit.
Further, the round tenon 21 and the shear pin 5 are respectively positioned on two sides of the circle center on a diameter, and the diameter is not in the longitudinal bridge direction and the transverse bridge direction of the support.
Further, the shock insulation support also comprises a lower sliding plate 6, and the lower sliding plate 6 is positioned below the lower support plate 4; the upper surface of the lower sliding plate 6 is provided with a stainless steel plate, the lower surface of the lower support plate 4 is provided with a wear-resisting plate, and the wear-resisting plate and the stainless steel plate form a sliding friction pair.
Further, the upper surface of the lower sliding plate 6 is provided with a guide rail groove 61, the lower surface of the lower support plate 4 is provided with a sliding guide rail 41, and the sliding guide rail 41 is in sliding fit with the guide rail groove 61.
Further, the slide rail 41 is arranged along the longitudinal bridge direction or the transverse bridge direction of the bracket.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, through the design of the horizontal pendulum between the upper support plate and the upper sliding plate, the self-vibration period of a bridge (or a building) is increased, the earthquake response of the structure is reduced, and the energy borne by the structure is greatly reduced; meanwhile, as each friction pair is not lubricated by silicone grease, a large friction force can consume a part of seismic energy, so that the shock absorption and isolation effect of the support is better; in addition, the relative displacement range between the upper part and the lower part of the support and between the upper part and the lower part of the bridge (or building) is limited by the horizontal swing radius, and the upper part and the lower part of the support and the upper part and the lower part of the bridge (or building) are prevented from being damaged due to overlarge displacement and even from falling into a beam. The support provided by the invention has the advantages of simple structure, convenience and quickness in installation, easiness in replacement and maintenance, low construction cost, high safety performance, economy and practicability, better seismic isolation and reduction effects, and can be widely applied to the engineering of bridges, buildings and the like.
Drawings
Fig. 1 is a schematic structural view of a pendulum vibration-isolating support with a beam falling prevention function in the first embodiment.
Fig. 2 is a top view of the support of fig. 1.
Fig. 3 is a schematic structural view of a pendulum vibration-isolating support with a beam falling prevention function in the second embodiment.
Fig. 4 is a top view of the mount of fig. 3.
Fig. 5 is a schematic structural view of a pendulum vibration-isolating support with a beam falling prevention function in the third embodiment.
Fig. 6 is a top view of the mount of fig. 5.
Fig. 7 shows an arrangement of the support on a bridge according to three embodiments of the present invention.
In the figure: 1. an upper sliding plate; 11. a circular sink; 2. an upper support plate; 21. a circular tenon; 3. a spherical cap liner plate; 4. a lower support plate; 41. a sliding guide rail; 5. a shear pin; 6. a lower sliding plate; 61. a guide rail groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The shock insulation support shown in the figures 1 and 2 sequentially comprises an upper sliding plate 1, an upper support plate 2, a spherical crown lining plate 3 and a lower support plate 4 from top to bottom; the lower surface of the upper support plate 2 is provided with a spherical crown type concave surface matched with the spherical crown surface of the spherical crown lining plate 3; the lower support plate 4 is provided with a groove, and the spherical crown lining plate 3 and the upper support plate 2 are both positioned in the groove. The groove on the lower support plate 4 is circular.
Sliding friction pairs are arranged between the upper sliding plate 1 and the upper support plate 2, between the upper support plate 2 and the spherical crown lining plate 3 and between the spherical crown lining plate 3 and the lower support plate 4, and no silicone grease lubrication is performed. The sliding friction pair is concretely as follows:
the lower surface of the upper sliding plate 1 is provided with a stainless steel plate, the upper surface of the upper support plate 2 is provided with an abrasion-resistant plate, and the abrasion-resistant plate and the stainless steel plate form a sliding friction pair;
an abrasion-resistant plate is arranged on the spherical crown type concave surface of the upper support plate 2, a stainless steel plate is arranged on the spherical crown surface of the spherical crown lining plate 3, and the abrasion-resistant plate and the stainless steel plate form a sliding friction pair;
the lower surface of the spherical crown lining plate 3 is provided with a wear-resisting plate, the upper surface of the lower support plate 4 is provided with a stainless steel plate, and the wear-resisting plate and the stainless steel plate form a sliding friction pair.
The lower surface of the upper sliding plate 1 is provided with a circular sinking groove 11, the upper surface of the upper support plate 2 is provided with a circular clamping tenon 21 in clearance fit with the circular sinking groove 11, and the circular sinking groove 11 and the circular clamping tenon 21 are eccentrically arranged.
The shock insulation support shown in figures 1 and 2 further comprises a shear pin 5, pin shaft holes are formed in the upper sliding plate 1 and the upper support plate 2, and the upper end and the lower end of the shear pin 5 are inserted into the pin shaft holes of the upper sliding plate 1 and the upper support plate 2 respectively and are in transition fit. The round trip 21 and the shear pin 5 are respectively positioned at two sides of the circle center on one diameter. The round trip 21 and the shear pin 5 are respectively positioned at two sides of the circle center on one diameter, and the diameter is not in the longitudinal bridge direction and the transverse bridge direction of the support.
When the support has internal displacement of a designed value, the support is equivalent to a common fixed support due to the fixing function of the shear pin 5; when the support is impacted by earthquake and the like, the shear pin 5 is in transition fit with the pin shaft hole, and the circular sunk groove 11 and the circular tenon 21 are in clearance fit, so that the shear pin 5 is firstly sheared by the impact, the upper and lower structures (such as a pier and a bridge body) of a bridge (or a building) are subjected to non-designed relative displacement, the upper support plate 2 and the upper sliding plate 1 can rotate and swing, and the support is equivalent to a multidirectional support.
Example two
As shown in fig. 3 and 4, compared with the vibration isolation support in the first embodiment, a lower sliding plate 6 is added, and the lower sliding plate 6 is positioned below a lower support plate 4; the upper surface of the lower sliding plate 6 is provided with a stainless steel plate, the lower surface of the lower support plate 4 is provided with a wear-resisting plate, and the wear-resisting plate and the stainless steel plate form a sliding friction pair.
The upper surface of the lower sliding plate 6 is provided with a guide rail groove 61, the lower surface of the lower support plate 4 is provided with a sliding guide rail 41, the sliding guide rail 41 and the guide rail groove 61 are in sliding fit to form a sliding guide rail mechanism, and a sliding friction pair formed by a wear-resistant plate and a stainless steel plate is also arranged between the sliding guide rail 41 and the side wall of the guide rail groove 61. The sliding guide rail 41 is arranged along the longitudinal bridge direction or the transverse bridge direction of the support, such as two central cross dotted lines in fig. 4.
When the support has internal displacement of a designed value, the support can only release transverse or longitudinal unidirectional displacement through a sliding guide rail mechanism between the lower support plate 4 and the lower sliding plate 6 due to the fixing action of the shear pin 5, namely the support is equivalent to a common unidirectional support; when the support is impacted by earthquakes and the like, the shear pin 5 is sheared by the impact, the upper and lower structures (such as a pier and a bridge body) of a bridge (or a building) are subjected to non-designed relative displacement, the upper support plate 2 and the upper sliding plate 1 can rotate and swing, the support is similar to a crank-slider structure, and the lower sliding guide rail mechanism does reciprocating motion while the upper part rotates, so that the support is equivalent to a multidirectional support.
EXAMPLE III
In the seismic isolation mount shown in fig. 5 and 6, the shear pins 5 are eliminated on the basis of the first embodiment.
When the support is displaced within a designed value, the support is equivalent to a common multidirectional support because the upper support plate 2 and the upper sliding plate 1 can rotate and swing; when the support is impacted by earthquake and the like, the round trip 21 is limited by the round sunk groove 11, the relative displacement of the upper sliding plate 1 and the lower support plate 4 cannot exceed the rotation radius of the support, and the permanent damage caused by overlarge displacement of the upper and lower structures of a bridge (or a building) is prevented, and the support is equivalent to a limit type multidirectional support.
As shown in fig. 7, the arrangement of the seismic isolation support in the bridge of the present invention includes the seismic isolation support in the first embodiment on the left top, the seismic isolation support in the second embodiment on the right top and the left bottom, and the seismic isolation support in the third embodiment on the right bottom.
The principle of the invention is as follows: through the design of the horizontal pendulum between the support upper support plate 2 and the upper sliding plate 1, the self-vibration period of a bridge (or a building) is increased, the earthquake response of the structure is reduced, and the energy borne by the structure is greatly reduced; meanwhile, as each friction pair is not lubricated by silicone grease, a large friction can consume a part of seismic energy, so that the shock absorption and isolation effect of the support is better; in addition, the relative displacement range between the upper part and the lower part of the support and between the upper part and the lower part of the bridge (or the building) is limited by the flat pendulum radius, and permanent damage caused by excessive displacement of the upper part and the lower part of the support and the upper part and the lower part of the bridge (or the building) is prevented.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Flat pendulum formula shock insulation support with prevent falling roof beam function, its characterized in that: the spherical crown lining plate comprises an upper sliding plate (1), an upper support plate (2), a spherical crown lining plate (3) and a lower support plate (4) which are sequentially arranged from top to bottom, wherein sliding friction pairs are arranged between the upper sliding plate (1) and the upper support plate (2), between the upper support plate (2) and the spherical crown lining plate (3) and between the spherical crown lining plate (3) and the lower support plate (4); the lower surface of the upper sliding plate (1) is provided with a circular sinking groove (11), the upper surface of the upper support plate (2) is provided with a circular clamping tenon (21) in clearance fit with the circular sinking groove (11), and the circular sinking groove (11) and the circular clamping tenon (21) are eccentrically arranged.
2. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 1, wherein: the lower surface of the upper support plate (2) is provided with a spherical crown concave surface matched with the spherical crown surface of the spherical crown lining plate (3).
3. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 2, wherein: the lower support plate (4) is provided with a groove, and the spherical crown lining plate (3) and the upper support plate (2) are both positioned in the groove.
4. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 3, wherein: the groove on the lower support plate (4) is circular.
5. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 1, wherein: an abrasion-resistant plate is arranged on the spherical crown type concave surface of the upper support plate (2), a stainless steel plate is arranged on the spherical crown surface of the spherical crown lining plate (3), and the abrasion-resistant plate and the stainless steel plate form a sliding friction pair; the lower surface of the spherical crown lining plate (3) is provided with an abrasion-resistant plate, the upper surface of the lower support plate (4) is provided with a stainless steel plate, and the abrasion-resistant plate and the stainless steel plate form a sliding friction pair; the lower surface of the upper sliding plate (1) is provided with a stainless steel plate, the upper surface of the upper support plate (2) is provided with a wear-resisting plate, and the wear-resisting plate and the stainless steel plate form a sliding friction pair.
6. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 1, wherein: the shock insulation support further comprises a shear pin (5), pin shaft holes are formed in the upper sliding plate (1) and the upper support plate (2), the upper end and the lower end of the shear pin (5) are inserted into the pin shaft holes of the upper sliding plate (1) and the upper support plate (2) respectively, and transition fit is achieved.
7. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 6, wherein: the round trip (21) and the shear pin (5) are respectively positioned on two sides of the circle center on one diameter, and the diameter is not in the longitudinal bridge direction and the transverse bridge direction of the support.
8. The pendulum vibration-isolating mount having a function of preventing a beam from falling down as set forth in any one of claims 1 to 7, wherein: the shock insulation support also comprises a lower sliding plate (6), and the lower sliding plate (6) is positioned below the lower support plate (4); the upper surface of the lower sliding plate (6) is provided with a stainless steel plate, the lower surface of the lower support plate (4) is provided with a wear-resisting plate, and the wear-resisting plate and the stainless steel plate form a sliding friction pair.
9. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 8, wherein: the upper surface of the lower sliding plate (6) is provided with a guide rail groove (61), the lower surface of the lower support plate (4) is provided with a sliding guide rail (41), and the sliding guide rail (41) is in sliding fit with the guide rail groove (61).
10. The pendulum-type seismic isolation bearing with a beam falling prevention function according to claim 9, wherein: the sliding guide rail (41) is arranged along the longitudinal bridge direction or the transverse bridge direction of the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110061584.3A CN112761063A (en) | 2021-01-18 | 2021-01-18 | Flat pendulum type shock insulation support with beam falling prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110061584.3A CN112761063A (en) | 2021-01-18 | 2021-01-18 | Flat pendulum type shock insulation support with beam falling prevention function |
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| Publication Number | Publication Date |
|---|---|
| CN112761063A true CN112761063A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110061584.3A Pending CN112761063A (en) | 2021-01-18 | 2021-01-18 | Flat pendulum type shock insulation support with beam falling prevention function |
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| CN (1) | CN112761063A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463503A (en) * | 2021-06-28 | 2021-10-01 | 阳光学院 | Double-liner bridge damping support |
| CN114875781A (en) * | 2022-01-07 | 2022-08-09 | 长沙理工大学 | Function-controllable multi-state switching type friction swinging type seismic mitigation and isolation support |
-
2021
- 2021-01-18 CN CN202110061584.3A patent/CN112761063A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463503A (en) * | 2021-06-28 | 2021-10-01 | 阳光学院 | Double-liner bridge damping support |
| CN113463503B (en) * | 2021-06-28 | 2023-02-10 | 阳光学院 | Double-liner-plate bridge damping support |
| CN114875781A (en) * | 2022-01-07 | 2022-08-09 | 长沙理工大学 | Function-controllable multi-state switching type friction swinging type seismic mitigation and isolation support |
| CN114875781B (en) * | 2022-01-07 | 2023-08-15 | 长沙理工大学 | Function controllable multi-state switching type friction pendulum type shock absorption and insulation support |
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