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2nd World Congress and Exhibition on Construction and Steel Structure

Las Vegas, USA

Jeongsu Ju

University of Seoul, Korea

Title: A study on the application of surveillance technology with large bolt axial force of nuclear facilities


Biography: Jeongsu Ju


The axial force of bolts is very important for structural stability. To obtain the stability of a structure, the axial force of bolts should satisfy specifications and be maintained consistently. Hence, it is important that the axial force of bolts is measured and carefully watched. However, measuring axial force using sensors is very expensive. Torque method frequently used in the field does not provide accurate values of axial force due to the changes in torque coefficient. This study suggests a surveillance system to measure and monitor bolt axial force. The purpose of the study is to examine how the long-term behavior of concrete exerts influence on the axial force of bolts used in structures and to verify the reliability of the suggested surveillance technology.