Base oscillating shock-isolation device for pile foundation bridge pier

A pile foundation and bridge pier technology, applied in the field of base sway seismic isolation devices, can solve the problems that bridges cannot be applied to soft soil sites, the applicable frequency range is narrow, and the bearing capacity is difficult to predict, so as to reduce the repair workload and economic costs, and achieve a large society Comprehensive benefits, avoiding repair costs

Inactive Publication Date: 2013-10-23
陈兴冲 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The damage caused by residual deformation may be repaired if it is slight, but the bearing capacity after repair is difficult to predict, and if it is serious, it needs to be rebuilt, which is time-consuming and disrupts traffic
The existing support damping and isolation devices h...

Method used

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  • Base oscillating shock-isolation device for pile foundation bridge pier
  • Base oscillating shock-isolation device for pile foundation bridge pier
  • Base oscillating shock-isolation device for pile foundation bridge pier

Examples

Experimental program
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Embodiment Construction

[0043] Such as figure 1 As shown, a base swing isolation device for a pile foundation pier includes an anti-overturning steel strand 1, a pier body 2, an enlarged foundation 3, rubber 4, a separation surface 5 and a foundation 6. The pier body 2 is connected to the enlarged foundation 3, and the pier body 2 is perpendicular to the enlarged foundation 3, and is embedded in the foundation 6. The periphery of the enlarged foundation 3 is filled with rubber 4, and the anti-overturning steel strand 1 is implanted in the pier body 2, and one end is anchored and the top of the pier, and the other end is anchored in the foundation 6.

[0044] Under normal use and frequent earthquakes, the pier body 2 does not sway, which ensures the anti-overturning stability of the bridge structure and the safety of driving.

[0045] In a design earthquake or a rare earthquake, the pier will sway relative to the foundation, and the seismic energy is filtered through the sway, and the steel strand 1...

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PUM

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Abstract

The invention discloses a base oscillating shock-isolation device for a pile foundation bridge pier. The base oscillating shock-isolation device is characterized by consisting of an overturn-preventing steel strand or reinforcing bar, a pier body, a spread foundation, rubber, a separation face and a foundation. The pier body is connected with the spread foundation and is perpendicular to the same and embedded into the same; the four sides of the spread foundation are filled with the rubber; the overturn-preventing steel strand or reinforcing bar, with one end anchored to a pier top and the other end anchored to the foundation, is inserted into the pier body. According related design specifications, the pier body is separated from the foundation, earthquake energy to the bridge pier is filtered by means of oscillating during design earthquake or rare earthquake, so that application function requirements of the bridge pier under normal service load and frequent earthquake are guaranteed. As the pier body and the foundation are separated in the design earthquake or rare earthquake, both the bridge pier and the foundation can be protected against earthquake.

Description

[0001] technical field [0002] The invention belongs to the technical field of engineering seismic isolation, in particular to a base swing isolation device for pile foundation bridge piers. The pier will sway relative to the foundation under the design earthquake or rare earthquake, and the pier will reset itself after the earthquake, so as to achieve the anti-seismic goal of protecting both the pier and the foundation. Background technique [0003] Considering the intermittence and uncertainty of large earthquakes, the elastic design of reinforced concrete bridges is uneconomical. For bridges designed according to the ductile anti-seismic theory, the plastic hinge area of ​​the piers will also cause permanent residual deformation after the earthquake. Slight damage caused by residual deformation may be repaired, but the bearing capacity after repair is difficult to predict, and severe damage requires reconstruction, which is time-consuming and disrupts traffic. The exis...

Claims

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Application Information

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IPC IPC(8): E01D19/02E02D27/12
Inventor 陈兴冲夏修身曹梦强
Owner 陈兴冲
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