Current Issue

FORMATION OF SHEAR BANDS IN THE VICINITY OF THE DAM BODY

Tse-Shan Hsu

President, Institute of Mitigation for Earthquake Shear Banding Disasters

Professor, Feng-Chia University, Taiwan, R.O.C., This email address is being protected from spambots. You need JavaScript enabled to view it.

Yu-Chien Wu

Ph.D., Ph.D. Program for Infrastructure Planning and Engineering, 

Feng-Chia University, Taiwan, R.O.C.

Zong-Lin Wu

Assistant Professor, National Chin-Yi University of Technology, Taiwan, R.O.C.

Da-Jie Lin 

Associate Professor, Feng-Chia University, Taiwan, R.O.C.

Abstract

Shear bands resulting from shear banding in the vicinity of a dam body can pose a serious threat to dam safety. Therefore, the early identification of shear bands is critical during the selection of a dam site. In this study, a numerical method for identifying shear bands within a dam body is proposed, based on micro-vibration measurement results. The method is then validated using field evidence of shear bands observed at the Shi-gang Dam in Taichung, Taiwan, following the 1999 Jiji earthquake. The results demonstrate that the proposed method can accurately identify in-situ shear bands.

Keywords: shear bands, identification, micro-vibration, dam safety.