A new electromechanical impedance-based method was proposed to estimate the remaining tensile force of post-tensioning system. It was applied to a real-scaled anchorage system which has 19 strands, wedges, and anchor head, a bearing plate, and a steel duct. Experimental results showed that the proposed scheme has great potential to evaluate the remaining tensile force quite accurately.

• 민지영(한국건설기술연구원 구조융합연구소 전임연구원) | Min, Jiyoung 교신저자