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Technical gazette, Vol. 26 No. 3, 2019.

Preliminary communication

https://doi.org/10.17559/TV-20170717105559

An Evaluation on Bridge Bearing Capacity under Scour and Re-occurrence of Strong Earthquake

Huang Xianbin ; Civil Engineering, Sichuan Agricultural University, Member of Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan 611830, China
Liu Chenyang ; Civil Engineering, Sichuan Agricultural University, Member of Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan 611830, China
Hou Song ; State Grid Sichuan Electric Power Company Leshan Power Supply Company, Sichuan, 614000, China
Chen Chunyang ; Civil Engineering, Sichuan Agricultural University, Member of Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan 611830, China
Mei Yujiao ; Civil Engineering, Sichuan Agricultural University, Member of Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan 611830, China
Lei Bo ; Guang'an Vocational Technical College, Guangan, Sichuan, 611830, China
Huang Yong ; Institute of Engineering Mechanics, China Earthquake Administration, Harbin, 150080, China

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Abstract

Plagued by frequent calamities, Bridge No.3 encountered magnitude-8 earthquake on May 12, 2008 and several years later its pile foundation was intensively scoured. The smallest scour depth was 4.5 meters and the largest scour depth was 9.2 meters. Considering intense scour and re-occurrence of strong earthquake, the Chinese existing standard and seismic response analysis are used to study bearing capacity and seismic performance of pier and pile foundation of Bridge No.3 before and after scour. It is proved by calculation that the bridge is stable before scour and can hardly bear strong earthquake and intense scour after scour, therefore consolidation is required. The study result may serve as an important reference for the bridge affected by serious scour and strong earthquake.

Keywords

axial force; bending moment; pile; reoccurrence of strong earthquake; scour

Hrčak ID:

221008

URI

https://hrcak.srce.hr/221008

Publication date:

12.6.2019.

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