道路橋の橋脚構造 - Shibata Industry Co., Ltd.

Title:

道路橋の橋脚構造

Document Type and Number:

Japanese Patent JP7270134

Kind Code:

B2

Abstract:

To provide a road bridge pier structure which prevents damage due to a vertical load caused by earthquake.SOLUTION: A buffer 10 is arranged between a superstructure 2 and a bridge pier 3. The yield load of the buffer 10 is less than the compressive strength of each of the superstructure 2 and the bridge pier 3. When a vertically upward load is applied due to an earthquake, the superstructure 2 stays in that position by inertia and the bridge pier 3 is likely to be displaced upward, so that the buffer 10 placed between the superstructure 2 and the bridge pier 3 becomes deformed. The buffer 10 elastically deforms until the load reaches the yield load, plastically deforms when the load exceeds the yield load, and further continues plastic deformation until the predetermined amount of displacement is reached when the load continues. This can suppress the upward displacement of the superstructure 2 and the force of pulling the bridge pier 3 in the vertical directions can be inhibited, thereby preventing the occurrence of cracks and fractures.SELECTED DRAWING: Figure 1

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Inventors:

Nishimoto Atsushi
Kazuhiro Ishimaru
Keiichiro Sonoda
Shunsuke Sakurai

Application Number:

JP2019006629A

Publication Date:

May 10, 2023

Filing Date:

January 18, 2019

Export Citation:

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Assignee:

Shibata Industry Co., Ltd.
National Institute of Technology

International Classes:

E01D19/04; E01D19/02

Domestic Patent References:

JP10266126A
JP2002317845A
JP2004092331A

Attorney, Agent or Firm:

Taiji Kasai
Kasai Sayaka
Hideaki Yamamoto

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