CN211200041U - An anti-seismic device on a bridge pier column - Google Patents

Abstract

The utility model relates to an anti-seismic device on a bridge pier column, which belongs to the technical field of road construction. Including the top deck, the lower column of the bridge pier, the cylindrical steel insert, the cylindrical steel support, the compression rubber, the circular groove A, the circular groove B, the upper column connector, the lower column connector, the energy dissipation spring, Ring-shaped memory alloy outer veneer, the bottom of the top bridge deck and the top of the lower column of the bridge pier are provided with corresponding circular grooves A, and the cylindrical steel column insert and the cylindrical steel support are provided with compression rubber, so The vertical anti-vibration device is provided with a lower column connector outside, the lower column connector is sleeved with an upper column connector, an energy dissipation spring is arranged between the upper column connector and the lower column connector, and the upper column is connected A ring-shaped memory alloy outer veneer is arranged on the outer side of the connecting piece and the lower column connecting piece. The utility model has high overall stability, greatly improves the anti-seismic performance on the premise of ensuring the normal function of the bridge pier column, has simple structure and convenient installation, and improves the practical application of the bridge pier column in the field of anti-seismic.

Description

An anti-seismic device on a bridge pier column

technical field

The utility model belongs to the technical field of road construction, in particular to an anti-seismic device on a bridge pier column.

Background technique

Small and medium-span girder bridges are widely used in my country and are an extremely important part of my country's increasingly developed road traffic network. Cylindrical pier is one of the substructure forms commonly used in this type of bridge. The cylindrical pier is consolidated with the cap, and the load transferred from the upper structure of the bridge is finally transferred to the foundation through the cylindrical pier, so that the entire bridge structure can maintain normal use. At present, my country's current "Detailed Rules for Seismic Design of Highway Bridges" and "Code for Seismic Design of Urban Bridges" stipulate that small and medium-span girder bridges are required to maintain elasticity under the action of E1 earthquake, damage is allowed under E2 earthquake action, and plastic hinges are allowed to appear on piers. However, in the Wenchuan earthquake in 2008 and the Yushu earthquake in 2010, many small and medium-span beam bridges suffered varying degrees of damage, including cracking at the bottom of a single-column pier or cracking at the connection between the beam and the pier-column of a double-column pier (such as: Miaoziping). Bridge, Changu Temple No. 1 Bridge, etc.) is one of the most common forms of damage to the substructure of bridges. This is mainly due to the excessive shear force transmitted to the bridge pier by the bridge superstructure during the earthquake, or the high height or mass of the bridge pier itself causes the bridge pier itself to generate a large inertial force during the earthquake. If the large bending deformation exceeds its bearing capacity, the light ones will crack the piers, and the heavy ones will break the bridge piers. It can be seen that the piers of the existing small and medium-span girder bridges in my country are far from meeting the seismic requirements, and seismic reinforcement is required. In response to this situation, there are two main methods of vibration reduction and isolation: one is to use vibration isolation bearings at the pier-beam connection, and install shock absorption devices, such as viscous dampers, elastic-plastic steel damping The second is to use concrete or steel pipe to wrap the bottom of the pier to increase the section bearing capacity of the bottom of the pier, so that it has enough capacity to resist the seismic load. However, these two methods have certain shortcomings: the first method requires the installation of high-priced shock isolation bearings, and the installation of shock isolation devices requires sufficient space between the piers and beams, and traffic must be suspended when replacing However, this method has no obvious shock absorption effect for bridge piers with high pier height and high quality; the second method also needs to interrupt the traffic when it is implemented. If concrete is used, the poured concrete needs to be cured. The entire reinforcement period is long. If steel pipes are used, the connection performance between steel pipes and concrete cannot be easily guaranteed. Finally, this method will increase the seismic demand of the cap foundation, which may cause damage to the cap foundation under the action of earthquakes. .

SUMMARY OF THE INVENTION

The purpose of this utility model is to solve the above problems existing in the prior art, and to provide an anti-seismic device on a bridge pier column, which can be prefabricated, quickly assembled, low in price, and reliable in performance, without affecting the normal use of the bridge. It can control the horizontal and vertical displacement of the bridge pier under the action of earthquake, dissipate the seismic energy, improve the seismic performance of the bridge pier, and further reduce the seismic demand for the foundation.

The technical scheme adopted by the utility model is as follows:

An anti-seismic device on a bridge pier column, comprising a top bridge deck, a lower column of a bridge pier, a cylindrical steel embedded column piece, a cylindrical steel support piece, a compression rubber, a circular groove A, a circular groove B, an upper column connecting piece, Lower column connecting piece, energy dissipation spring, annular memory alloy outer veneer, the anti-seismic device on the pier column includes vertical anti-seismic device and horizontal anti-seismic device; the vertical anti-seismic device is arranged on the top bridge deck and under the bridge pier Between the columns, the bottom of the top deck and the top of the lower column of the pier are provided with a corresponding circular groove A, and a cylindrical steel embedded column is arranged in the circular groove A, and the cylindrical steel embedded column Matching with the circular radius equal to the circular groove A, a cylindrical steel support is arranged between the upper and lower cylindrical steel inserts, and the cylindrical steel inserts and the cylindrical steel support are consistent cylindrical structures. , a circular groove B is formed on the surface to be connected and the double sides of the cylindrical steel support of the cylindrical steel embedded member, and the cylindrical steel embedded member and the cylindrical steel support are provided with anti-compression rubber. , the compressive rubber is placed in the circular groove B, the section of the compressive rubber matches the section of the circular groove B, the vertical anti-vibration device is provided with a lower column connecting piece outside, and the lower column is connected The component is an annular barrel-shaped structure, the lower column connector is sleeved on the outside of the cylindrical steel embedded column component and the cylindrical steel support component, and is fixedly connected with the lower column of the bridge pier, and the upper column connector is sleeved on the outside of the lower column connector. The upper column connector is fixedly connected to the bottom surface of the top bridge deck, the upper column connector is a barrel-shaped structure, and its diameter is larger than that of the lower column connector, and an energy dissipation spring is arranged between the upper column connector and the lower column connector The outer side of the upper column connecting piece and the lower column connecting piece is provided with an annular memory alloy outer veneer, and the annular memory alloy outer veneer has the same circular radius as the top bridge deck and the lower column of the bridge pier.

Further, a bottom flange is formed around the bottom of the lower column connector, and the bottom flange of the lower column connector is fixedly connected to the top of the lower column of the bridge pier by self-tapping and self-drilling screws.

Further, the top of the upper column connecting piece is provided with a circle that is consistent with the cylindrical steel embedded column piece, and a top flange is formed between it and the edge of the upper column connecting piece, and the top flange of the upper column connecting piece is connected to the top bridge deck. The bottom is fixed and connected by self-tapping self-drilling screws.

Further, the annular memory alloy outer veneer is fixedly connected to the upper column connecting piece and the lower column connecting piece through self-tapping and self-drilling screws.

Further, six groups of energy dissipation springs are vertically arranged between the upper column connecting piece and the lower column connecting piece at the same position as the self-tapping self-drilling screw.

Further, the lower column connecting piece is sleeved on the outside of the cylindrical shaped steel embedded column piece and the cylindrical shaped steel support piece, and is in close contact with the cylindrical shaped steel embedded column piece and the cylindrical shaped steel support piece.

Further, the compression-resistant rubber, the energy-dissipating spring, and the ring-shaped memory alloy outer veneer are all elastic materials, which can be restored to their original state after displacement.

Further, the height of the combination of the annular memory alloy outer veneer, the upper column connector and the lower column connector, and the combination of the cylindrical steel column insert, the cylindrical steel support, and the compression rubber are the same.

Beneficial effects of the present utility model: the anti-seismic device on the pier column of the present utility model can ensure the stability of the pier column structure, and when the earthquake disaster occurs again, the pier column can be erected under the action of the spring and the compressive rubber. The displacement can be carried out in the vertical and horizontal directions to further dissipate energy, so that the pier column can be restored to its original position under the action of the spring and rubber after the earthquake disaster makes the energy dissipation buffer. The seismic devices are coordinated and cooperate, and the utility model has the advantages of simple structure, high stability, convenient installation, convenient disassembly, maintenance and transportation, and greatly improves the seismic performance of the bridge pier columns.

Description of drawings

Fig. 1 is the front view of the anti-seismic device on the pier column of the utility model;

Figure 2 is a detailed structural diagram of the anti-seismic device on the pier column of the utility model;

Figure 3 is a diagram of a vertical anti-seismic device composed of cylindrical steel inserts, cylindrical steel supports and compressive rubber;

Figure 4 is a schematic diagram of the splicing of cylindrical steel inserts, cylindrical steel supports and compression rubber;

Figure 5 is a top view of the connection between the lower column and the lower column connector of the bridge pier;

Fig. 6 is a diagram of the transverse anti-seismic device of section A-A in Fig. 2;

Figure 7 is a schematic diagram of the three-dimensional structure of the cylindrical steel support;

Figure 8 is a schematic diagram of the three-dimensional structure of the upper column connector;

Figure 9 is a schematic diagram of the three-dimensional structure of the lower column connector.

In the figure: 1 is the top bridge deck, 2 is the lower column of the pier, 3 is the cylindrical steel insert, 4 is the cylindrical steel support, 5 is the compression rubber, 6 is the circular groove A, and 7 is the circular groove B, 8 is the upper column connecting piece, 8-1 is the top flange, 9 is the lower column connecting piece, 9-1 is the bottom flange, 10 is the energy dissipation spring, 11 is the annular memory alloy outer veneer, 12 is the self- Tapping self-drilling screws, 13 are vertical slots for connecting pieces.

Detailed ways

In order to further illustrate the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present utility model.

Example 1:

As shown in Figures 1-9, an anti-seismic device on a bridge pier column includes a top bridge deck 1, a lower pier column 2, a cylindrical steel embedded column 3, a cylindrical steel support 4, a compression rubber 5, a circular groove A6, circular groove B7, upper column connector 8, top flange 8-1, lower column connector 9, bottom flange 9-1, energy dissipation spring 10, annular memory alloy outer veneer 11, self-tapping Drill screws 12 and vertical hollow slots 13 of the connector. The anti-seismic device on the pier column of the present utility model includes vertical and horizontal directions; the vertical anti-seismic device is arranged between the top bridge deck 1 and the lower column 2 of the bridge pier, and the bottom of the top bridge deck 1 and the bridge pier are arranged. A circular groove A6 is arranged on the top of the lower column 2, and a cylindrical steel insert 3 is arranged in the circular groove A6. The cylindrical steel insert 3 is a cylindrical structure with a solid circular section, and the circular radius is equal to the circular concave. The circular radius size of slot A6, the cylindrical steel insert 3 and the cylindrical steel support 4 are all cylindrical structures, and the cylindrical steel insert 3 has one side surface and the cylindrical steel support 4 has both sides. Circular grooves B7 are arranged on the surface, and its circular radius is equal to the circular radius of the compression rubber 5, which is also a cylindrical structure. The compression rubber 5 is arranged between the upper and lower cylindrical steel supports 4 and the cylindrical steel inserts 3. , between the cylindrical steel supports 4 and embedded in the circular groove B7, the entire vertical anti-vibration device consists of cylindrical steel embedded columns 3, cylindrical steel supports 4, and compressive rubber 5 staggered arrangement; The column connector 8 and the lower column connector 9 are all annular structures with an L-shaped cross-section, and a vertical anti-seismic device is arranged in the central hollow part. The flanges are respectively nailed on the top bridge deck 1 and the lower column 2 of the bridge pier, and 6 self-tapping and self-drilling screws 12 are driven into the horizontal symmetry and the center of the circle at equal distances to ensure that the upper column connecting piece 8 and the lower column connecting piece are 9 stability, and 6 groups of energy dissipation springs 10 are vertically welded between the upper column connector 8 and the lower column connector 9 at the same position as the self-tapping self-drilling screw 12, which can ensure the upper column connector 8 and the lower column. The connecting piece 9 is elastically displaced in the horizontal direction to form an anti-vibration device in the horizontal direction; the annular memory alloy outer veneer 11 has the same circular radius as the top bridge deck 1 and the lower column 2 of the bridge pier, and is arranged on the upper column connecting piece 8 The outer side of the lower column connecting piece 9 is also nailed on the upper column connecting piece 8 and the lower column connecting piece 9 with self-tapping and self-drilling screws 12 .

The vertical anti-seismic device and the anti-seismic device in the horizontal direction do not affect each other and work together, which can ensure the all-round anti-seismic performance of the whole bridge pier.

When the vertical anti-vibration device is displaced, the cylindrical-shaped steel embedded column member 3 and the cylindrical-shaped steel support member 4 can ensure vertical stability, and the material properties of the compressive rubber 5 can slightly displace in the horizontal direction.

The lower column connecting member 9 can ensure that the position of the vertical anti-vibration device is fixed while performing horizontal anti-vibration.

The compression-resistant rubber 5, the energy-consuming spring 10, and the ring-shaped memory alloy outer veneer 11 all have elasticity, which can ensure that the structure returns to its original state after displacement.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the principles of the present invention. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides an antidetonation device on pier post which characterized in that: the bridge pier comprises a top bridge deck (1), a lower bridge pier column (2), a cylindrical steel embedded column piece (3), a cylindrical steel supporting piece (4), compression-resistant rubber (5), a circular groove A (6), a circular groove B (7), an upper column connecting piece (8), a lower column connecting piece (9), an energy-consuming spring (10) and an annular memory alloy outer attachment plate (11), wherein an anti-seismic device on the bridge pier column comprises a vertical anti-seismic device and a horizontal anti-seismic device; the vertical anti-seismic device is arranged between a top bridge deck (1) and a pier lower column (2), corresponding circular grooves A (6) are formed in the bottom of the top bridge deck (1) and the top of the pier lower column (2), cylindrical steel stud pieces (3) are arranged in the circular grooves A (6), the cylindrical steel stud pieces (3) are matched with circular grooves A (6) with circular radiuses, cylindrical steel supporting pieces (4) are arranged between the upper cylindrical steel stud piece and the lower cylindrical steel stud piece (3), the cylindrical steel stud pieces (3) and the cylindrical steel supporting pieces (4) are of identical cylindrical structures, circular grooves B (7) are formed in the surfaces to be connected of the cylindrical steel stud pieces (3) and the two side surfaces of the cylindrical steel supporting pieces (4), and anti-seismic rubber (5) is arranged between the cylindrical steel stud pieces (3) and the cylindrical steel supporting pieces (4), the anti-seismic device is characterized in that the anti-seismic rubber (5) is arranged in a circular groove B (7), the cross section of the anti-seismic rubber (5) is matched with the cross section of the circular groove B (7), a lower column connecting piece (9) is arranged outside the vertical anti-seismic device, the lower column connecting piece (9) is of an annular barrel-shaped structure, the lower column connecting piece (9) is sleeved outside a cylindrical steel embedded column piece (3) and a cylindrical steel supporting piece (4) and is fixedly connected with a pier lower column (2), an upper column connecting piece (8) is sleeved outside the lower column connecting piece (9), the upper column connecting piece (8) is fixedly connected with the bottom surface of a top bridge floor (1), the upper column connecting piece (8) is of a barrel-shaped structure, the diameter of the upper column connecting piece is larger than that of the lower column connecting piece (9), an energy-dissipating spring (10) is arranged between the upper column connecting piece (8) and the lower column connecting piece (9), and an annular memory alloy outer, the circular memory alloy outer attachment plate (11) has the same circular radius as the top bridge deck (1) and the pier lower column (2).

2. An anti-seismic device on pier column according to claim 1, characterized in that: a circle of bottom flange (9-1) is arranged on the periphery of the bottom of the lower column connecting piece (9), and the bottom flange (9-1) of the lower column connecting piece (9) is fixedly connected with the top of the lower column (2) of the pier through a self-tapping self-drilling screw (12).

3. An anti-seismic device on pier column according to claim 1, characterized in that: the top of the upper column connecting piece (8) is provided with a circle consistent with the cylindrical steel embedded column piece (3), a top flange (8-1) is formed between the top of the upper column connecting piece and the edge of the upper column connecting piece (8), and the top flange (8-1) of the upper column connecting piece (8) is fixedly connected with the bottom of the top bridge deck (1) through a self-tapping self-drilling screw (12).

4. An anti-seismic device on pier column according to claim 1, characterized in that: the annular memory alloy outer flitch (11) is fixedly connected with the upper column connecting piece (8) and the lower column connecting piece (9) through self-tapping self-drilling screws (12).

5. An anti-seismic device on pier column according to claim 1, characterized in that: and 6 groups of energy dissipation springs (10) are vertically arranged between the upper column connecting piece (8) and the lower column connecting piece (9) and at the same position with the self-tapping self-drilling screw (12).

6. An anti-seismic device on pier column according to claim 1, characterized in that: and the lower column connecting piece (9) is sleeved outside the cylindrical section steel embedded column piece (3) and the cylindrical section steel supporting piece (4) and is tightly attached to the cylindrical section steel embedded column piece (3) and the cylindrical section steel supporting piece (4).

7. An anti-seismic device on pier column according to claim 1, characterized in that: the compression-resistant rubber (5), the energy dissipation spring (10) and the annular memory alloy outer attachment plate (11) are all made of elastic materials and can restore to the original shape after displacement.

8. An anti-seismic device on pier column according to claim 1, characterized in that: the height of the combination of the annular memory alloy outer attachment plate (11), the upper column connecting piece (8) and the lower column connecting piece (9) is consistent with that of the combination of the cylindrical steel embedded column piece (3), the cylindrical steel supporting piece (4) and the compression-resistant rubber (5).

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