CN211547307U - Novel become roof beam slab formula rubber support that falls is prevented in rigidity shock attenuation - Google Patents

Abstract

The utility model discloses a novel variable-rigidity shock-absorbing and anti-falling beam plate type rubber bearing, comprising an upper bearing plate, a lower bearing plate, an anchoring assembly and a rubber body located between the upper bearing plate and the lower bearing plate, characterized in that a vertical limit groove is provided at the center of the rubber body, an elastic limit tenon is provided in the limit groove, the diameter of the elastic limit tenon gradually increases or decreases from top to bottom, or the elastic limit tenon has the same diameter from top to bottom, due to the strengthening effect of the elastic limit tenon, its horizontal shear resistance will be greatly increased, thereby playing a role in preventing the beam from falling, and also increasing the service life of the plate type rubber bearing.

Description

A new type of variable stiffness shock-absorbing and anti-falling beam plate rubber bearing

technical field

The utility model relates to the technical field of bridge engineering, in particular to a novel variable-rigidity shock-absorbing and anti-falling beam plate-type rubber bearing.

Background technique

With the continuous development of society and the continuous advancement of technology, people's living standards continue to improve, and infrastructure is vigorously constructed. As a major infrastructure country, my country's infrastructure construction is in full swing. A large number of bearings are used in various bridges and roads. Rubber bearings are widely used in bridge engineering, especially small and medium-span bridge projects due to their low comprehensive cost and cheap construction methods. However, the rubber body of the plate rubber bearing only bears vertical loads and corners, not horizontal forces. , when the horizontal force is large, the danger of falling beams is prone to occur, resulting in safety accidents.

Utility model content

The purpose of this utility model is to provide a new type of variable stiffness shock-absorbing anti-falling beam plate type rubber bearing, which is used to solve the problem that the existing plate type rubber bearing is weak in horizontal shear force and is prone to falling when the existing plate type rubber bearing bears the force in the horizontal direction. Liang's accident.

In order to solve the above-mentioned technical problems, the utility model adopts the following scheme:

A novel variable stiffness shock-absorbing and anti-falling beam plate type rubber bearing includes an upper bearing plate, a lower bearing plate, an anchoring component and a rubber body located between the upper bearing plate and the lower bearing plate, and is characterized in that the The center of the rubber body is provided with a vertical limit groove, an elastic limit tenon is arranged in the limit groove, and the diameter of the elastic limit tenon gradually increases or decreases from top to bottom.

Due to the adoption of the above technical solutions, the present utility model includes an upper support plate fixed on the bottom surface of the beam body through an anchor assembly, a lower support plate fixed on the top surface of the bridge pier through the anchor assembly, and the upper support plate and the lower support plate are installed between the upper support plate and the lower support plate. There is a rubber body, the rubber body is the existing plate rubber, in the shape of a cylinder or a cuboid, the rubber body is used to carry the vertical load, and has a shock absorption and buffer effect on the change of the vertical force, and is opened in the center of the rubber body. The limit slot is installed with an elastic limit tenon. The diameter of the elastic limit tenon gradually increases or decreases from top to bottom. Since the elastic limit tenon conforms to the force mode of the cantilever beam, under the end load, due to Each section is subjected to different bending moments according to the different force arms. According to the material stress calculation formula, the upper and lower diameters of the elastic limit tenon are made into different diameters, which can better exert the material performance and better reflect the elastic-plastic deformation of the device. For the cylindrical elastic limit falcon, it can save a part of the material. During an earthquake, when the earthquake horizontal force is greater than the yield force of the elastic limit tenon, the elastic limit tenon enters the elastic-plastic state, using plastic deformation to dissipate energy, and at the same time the rubber body produces In extreme cases, due to the strengthening effect of the elastic limit tenon, the horizontal shear resistance of the support will be greatly increased, thus playing the role of anti-drop beam.

Further, as a preferred technical solution, four corners of the upper support plate and the lower support plate are respectively provided with waist-shaped holes, and the two waist-shaped holes corresponding to the upper support plate and the lower support plate are 90°. The waist-shaped hole is provided with an anchoring component.

Due to the above technical solution, four corners of the upper support plate and the lower support plate are respectively provided with waist-shaped holes, the two waist-shaped holes corresponding to the two support plates are arranged at 90°, and the waist-shaped holes are pierced through The anchoring component fixes the entire support between the beam body and the bridge pier, and the waist-shaped hole effectively solves the hole position plane error during the installation of the support.

Further, as a preferred technical solution, an upper connecting plate is arranged between the top surface of the rubber body and the upper support plate, and a lower connecting plate is arranged between the bottom surface of the rubber body and the lower support plate, and the upper connecting plate is It is fixedly connected with the upper support plate by bolts, and the lower connecting plate is connected with the lower support plate by bolts.

Due to the adoption of the above technical solution, an upper connecting plate is provided between the top surface of the rubber plate body and the upper support plate, the upper connecting plate is fixedly connected to the upper support plate by bolts, and the bottom surface of the rubber plate body and the lower support plate are fixedly connected. A lower connecting plate is provided, and the lower connecting plate is fixedly connected with the lower support plate through bolts.

Further, as a preferred technical solution, the top end of the elastic limiting tenon is connected to the spherical protrusion.

Further, as a preferred technical solution, the spherical protrusion and the elastic limiting tenon are integrally formed.

Due to the adoption of the above technical solution, the integral forming of the spherical protrusion and the elastic limiting tenon can improve the connection firmness between the two and enhance the horizontal shear resistance of the support.

Further, as a preferred technical solution, the bottom surface of the upper connecting plate is provided with a first limiting groove that is adapted to the spherical protrusion at the top of the elastic limit tenon, and the spherical protrusion snaps into the first limiting groove and moves with the upper connecting plate. For connection, the top surface of the lower connecting plate is provided with a second limiting groove adapted to the bottom end of the elastic limiting tenon, and the elastic limiting tenon is inserted into the second limiting groove to be fixedly connected with the lower connecting plate.

Due to the above technical solution, the bottom surface of the upper connecting plate is provided with a first limiting groove, the first limiting groove is matched with the spherical protrusion at the top of the elastic limiting tenon, and the spherical protrusion can rotate in the first limiting groove, When the horizontal force acts on the support, the frictional energy consumption can be buffered between the spherical protrusion and the first limit groove to achieve shock absorption effect, and due to the function of the first limit groove, the elastic limit tenon is not easily displaced, In this way, it can ensure that the entire rubber body is not easy to slide out between the upper and lower connecting plates, resulting in the risk of falling beams. The top surface of the lower connecting plate is provided with a second limit groove, and the second limit groove corresponds to the bottom end of the elastic limit tenon. The elastic limit tenon is inserted into the second limit groove and is fixedly connected with the lower connecting plate. The first limit groove and the second limit groove effectively prevent the elastic limit tenon from slipping out of the limit groove. They are fixedly connected with the upper and lower support plates respectively to form a whole. The upper and lower ends of the elastic limit tenon are respectively clamped in the first limit groove and the second limit groove, so that the elastic limit tenon and the rubber body are the same as the upper and lower connecting plates. And the upper and lower support plates are integrated, which improves the horizontal shear resistance of the rubber body and reduces the occurrence of beam falling accidents.

Further, as a preferred technical solution, the rubber body is a fixed type or a one-way movable type.

The beneficial effects that the utility model has:

1. The support structure is an elastic limit tenon added in the middle of the ordinary rubber support. The rubber body only bears the vertical load and corner, and does not bear the horizontal force, which increases the service life of the support. The horizontal force of the support is limited by the elastic limit. Under normal circumstances, the elastic limit tenon is elastically deformed, which meets the requirements of the horizontal limit of the bridge. During an earthquake, when the seismic horizontal force is greater than the yield force of the elastic limit tenon, the elastic limit tenon enters the elastic-plastic state, using steel The plastic deformation consumes energy, and the rubber body produces a large shear deformation, which plays the role of shock absorption. Anti-falling beam effect.

2. The waist-shaped holes corresponding to the four corners of the upper and lower support plates are set at 90 degrees, which effectively solves the hole position plane error when the support is installed.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is an enlarged view at B;

Fig. 3 is A-A sectional view;

Fig. 4 is the structural representation of the one-way movable rubber body in this embodiment 3;

Fig. 5 is another structure of one-way movable type support;

FIG. 6 is a three-dimensional structural diagram of the utility model.

Reference numerals: 1-upper support plate, 2-lower support plate, 3-upper connecting plate, 4-lower connecting plate, 5-rubber body, 6-limiting groove, 601-first limiting groove, 602 -Second limit groove, 7-Elastic limit tenon, 8-Anchor component, 9-Waist hole, 10-Spherical protrusion.

Detailed ways

The present utility model will be described in further detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present utility model are not limited thereto.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal" ", "inside", "outside", "front", "rear", "top", "bottom" and other indicated orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the utility model product The orientation or positional relationship that is usually placed in use is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be used. It is understood as a limitation of the present invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "set", "open", "installed", "connected" and "connected" should be understood in a broad sense, such as , it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or a connection between the two components. . For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1

A new type of rubber bearing with variable stiffness shock-absorbing anti-falling beam plate includes an upper bearing plate 1 , a lower bearing plate 2 , an anchoring component 8 and a rubber body 5 located between the upper bearing plate 1 and the lower bearing plate 2 , which is characterized in that a vertical limit groove 6 is arranged in the center of the rubber body 5, and an elastic limit tenon 7 is arranged in the limit groove 6, and the diameter of the elastic limit tenon 7 gradually increases from top to bottom. increase or decrease.

Specifically, as shown in Figures 1-3, the present utility model includes an upper support plate 1 fixed on the bottom surface of the beam body through an anchor assembly 8, a lower support plate 2 fixed on the top surface of the bridge pier through the anchor assembly 8, and an upper support plate 2. A rubber body 5 is installed between the plate 1 and the lower support plate 2. The rubber body 5 is an existing plate-type rubber bearing, in the shape of a cylinder or a cuboid. The rubber body 5 is used to carry vertical loads, and the The change plays the role of shock absorption and buffering. A limit groove 6 is opened in the center of the rubber body 5, and an elastic limit tenon 7 is installed in the limit groove 6. The diameter of the elastic limit tenon 7 gradually increases from top to bottom or Reduced, because the elastic limit tenon conforms to the force mode of the cantilever beam, under the action of the end load, because each section bears different bending moments with the different force arms, according to the material stress calculation formula, the elastic limit tenon is made into upper and lower diameters with different diameters. etc., it can better exert the material properties, better reflect the elastic-plastic deformation of the device, and can save a part of the material compared to the cylindrical elastic limit falcon. When the external horizontal force is greater than the yield force of the elastic limit tenon 7, The elastic limit tenon 7 enters an elastic-plastic state, and uses plastic deformation to dissipate energy. At the same time, the rubber body 5 produces a large shear deformation, thereby playing a role of shock absorption. In extreme cases, due to the strengthening effect of the elastic limit tenon 7, Its horizontal shear force will be greatly increased, so as to prevent the beam from falling, and also prolong the service life of the plate rubber bearing.

Example 2

On the basis of the above embodiment, as shown in Figures 1 and 6, four corners of the upper support plate 1 and the lower support plate 2 are respectively provided with waist-shaped holes 9, and the upper support plate 1 and the lower support plate The two waist-shaped 9 holes corresponding to the seat plate 2 are arranged at 90°, and the anchor components 8 are penetrated in the waist-shaped holes 9 .

Specifically, as shown in FIGS. 4 and 6 , four corners of the upper support plate 1 and the lower support plate 2 are respectively provided with waist-shaped holes 9 , and the two waist-shaped holes 9 corresponding to the two support plates are 90 ° Arrangement, an anchoring component 8 is pierced in the waist-shaped hole 9 to fix the entire support between the beam body and the bridge pier, and the waist-shaped hole 9 effectively solves the hole position plane error during the installation of the support.

Example 3

As shown in FIG. 2 , on the basis of the above embodiment, an upper connecting plate 3 is provided between the top surface of the rubber body 5 and the upper support plate 1 , and an upper connecting plate 3 is arranged between the bottom surface of the rubber body 5 and the lower support plate 2 . A lower connecting plate 4 is provided, the upper connecting plate 3 and the upper supporting plate 1 are fixedly connected by bolts, and the lower connecting plate 4 and the lower supporting plate 2 are connected by bolts.

Specifically, an upper connecting plate 3 is provided between the top surface of the rubber plate body 5 and the upper support plate 1 , the upper connecting plate 3 is fixedly connected to the upper support plate 1 through bolts, and the bottom surface of the rubber plate body 5 is connected to the lower support plate 1. A lower connecting plate 4 is arranged between the plates 2 , and the lower connecting plate 4 is fixedly connected to the lower support plate 2 through bolts.

The top end of the elastic limiting tenon 7 is connected with the spherical protrusion.

The spherical protrusion and the elastic limiting tenon are integrally formed, and the integral forming of the spherical protrusion 10 and the elastic limiting tenon 7 can improve the connection firmness between the two and enhance the horizontal shear resistance of the support.

The bottom surface of the upper connecting plate 3 is provided with a first limiting groove 601 which is adapted to the spherical protrusion 10 at the top of the elastic limiting tenon 7 , and the spherical protrusion 10 is snapped into the first limiting groove 601 and is movably connected to the upper connecting plate 3 The top surface of the lower connecting plate 4 is provided with a second limiting groove 602 adapted to the bottom end of the elastic limiting tenon 7 , and the elastic limiting tenon 7 is inserted into the second limiting groove 602 to be fixedly connected to the lower connecting plate 4 .

Specifically, the bottom surface of the upper connecting plate 3 is provided with a first limiting groove 601. The first limiting groove 601 is matched with the spherical protrusion 10 at the top of the elastic limiting tenon 7, and the spherical protrusion 10 is snapped into the first limiting groove. 601 is movably connected with the upper connecting plate 3, the spherical protrusion 10 can rotate in the first limiting groove 601, when the horizontal force acts on the support, the spherical protrusion 10 and the first limiting groove 601 can buffer friction It consumes energy and strengthens the shock absorption effect, and due to the function of the first limit groove 601, the elastic limit tenon 7 is not easy to displace and fall off from the upper connecting plate 3, which can ensure that the entire rubber body 5 is not easy to slide out of the upper and lower connecting plates. There is a second limit groove 602 on the top surface of the lower connection 4. The second limit groove 602 corresponds to the bottom end of the elastic limit tenon 7, and the elastic limit tenon 7 is inserted into the second limit The groove 602 is fixedly connected with the lower connecting plate 4. The first limiting groove 601 and the second limiting groove 602 effectively prevent the elastic limiting tenon 7 from sliding out of the two limiting grooves. , The lower support plate is fixedly connected to form a whole, the upper and lower ends of the elastic limit tenon 7 are respectively stuck in the first limit groove 601 and the second limit groove 602, so that the elastic limit tenon 7 and the rubber body 5 The same as the upper and lower connecting plates and the upper and lower bearing plates are integrated, which improves the horizontal shear resistance of the rubber body 5 and reduces the occurrence of beam falling accidents.

Example 4

The rubber body 5 is a fixed type or a one-way movable type.

Specifically, as shown in Figures 4 and 5, the utility model can also choose a one-way movable rubber bearing, that is, a unidirectional movable rubber body 5 is selected between the upper bearing plate 1 and the lower bearing plate 2, That is, the upper support plate 1 does not need to be fixed with the same connecting plate 3 as above, and the lower support plate 2 does not need to be fixed with the lower connecting plate 4. The one-way movable rubber bearing is well known to those skilled in the art, and will not be repeated here. The same as the above-mentioned embodiment, the conventional plate type rubber bearing, whether in normal use or earthquake test, only provides rigidity by the horizontal shear deformation of the rubber, and while the rubber provides rigidity, the elastic limit tenon 7 bounces. Plastic deformation provides shear stiffness, and shear stiffness varies with horizontal displacement.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, the above embodiments are Any simple modifications, equivalent replacements and improvements, etc. made still fall within the protection scope of the technical solution of the present invention.

Claims (7)

1. The utility model provides a novel become roof beam slab rubber bearing that falls is prevented in rigidity shock attenuation, includes upper bracket board (1), undersetting board (2), anchor subassembly (8) and is located rubber body (5) between upper bracket board (1) and undersetting board (2), its characterized in that, rubber body (5) center is equipped with vertical spacing groove (6), be equipped with elasticity spacing tenon (7) in spacing groove (6), the diameter of elasticity spacing tenon (7) is by last crescent or reduce.

2. The novel variable-rigidity shock-absorbing anti-falling beam slab rubber bearing as claimed in claim 1, wherein waist-shaped holes (9) are respectively formed in four corners of the upper bearing plate (1) and the lower bearing plate (2), two corresponding waist-shaped holes (9) of the upper bearing plate (1) and the lower bearing plate (2) are arranged at 90 degrees, and an anchoring component (8) is arranged in each waist-shaped hole (9) in a penetrating manner.

3. The novel variable-stiffness damping anti-falling beam plate type rubber bearing is characterized in that an upper connecting plate (3) is arranged between the top surface of the rubber body (5) and the upper bearing plate (1), a lower connecting plate (4) is arranged between the bottom surface of the rubber body (5) and the lower bearing plate (2), the upper connecting plate (3) is fixedly connected with the upper bearing plate (1) through bolts, and the lower connecting plate (4) is connected with the lower bearing plate (2) through bolts.

4. The novel variable-stiffness shock-absorbing anti-falling beam plate type rubber support is characterized in that a spherical bulge (10) is connected to the top end of the elastic limiting tenon (7).

5. The novel variable-stiffness shock-absorbing anti-falling beam plate type rubber support is characterized in that the spherical bulge (10) is integrally formed with the elastic limiting tenon (7).

6. The novel variable-stiffness shock-absorbing fall-preventing beam slab rubber support according to claim 3, wherein a first limiting groove (601) matched with a spherical protrusion (10) at the top end of an elastic limiting tenon (7) is formed in the bottom surface of the upper connecting plate (3), the spherical protrusion (10) is clamped into the first limiting groove (601) and movably connected with the upper connecting plate (3), a second limiting groove (602) matched with the bottom end of the elastic limiting tenon (7) is formed in the top surface of the lower connecting plate (4), and the elastic limiting tenon (7) is inserted into the second limiting groove (602) and fixedly connected with the lower connecting plate (4).

7. The novel variable-stiffness shock-absorbing anti-falling beam plate type rubber support according to claim 1, wherein the rubber body (5) is of a fixed type or a one-way movable type.

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