期刊
SMART STRUCTURES AND SYSTEMS
卷 15, 期 2, 页码 375-393出版社
TECHNO-PRESS
DOI: 10.12989/sss.2015.15.2.375
关键词
local dynamic; PZT interface; tendon anchorage; prestress force; impedance signature; modal analysis; modal sensitivity
资金
- Construction Technology Innovation Program - Ministry of Land, Transportation and Maritime Affairs (MLTM) of Korean government [12, E09]
- Brain Korea 21 Plus program of Korean Government
- Korea Agency for Infrastructure Technology Advancement (KAIA) [63896] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [22A20130000122] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, local dynamic characteristics of mountable PZT interfaces are numerically analyzed to verify their feasibility on impedance monitoring of the prestress-loss in tendon anchorage subsystems. Firstly, a prestressed tendon-anchorage system with mountable PZT interfaces is described. Two types of mountable interfaces which are different in geometric and boundary conditions are designed for impedance monitoring in the tendon-anchorage subsystems. Secondly, laboratory experiments are performed to evaluate the impedance monitoring via the two mountable PZT interfaces placed on the tendon-anchorage under the variation of prestress forces. Impedance features such as frequency-shifts and root-mean-square-deviations are quantified for the two PZT interfaces. Finally, local dynamic characteristics of the two PZT interfaces are numerically analyzed to verify their performances on impedance monitoring at the tendon-anchorage system. For the two PZT interfaces, the relationships between structural parameters and local vibration responses are examined by modal sensitivity analyses.
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