Abstract
This study investigates the change in hysteretic properties of a lead–rubber bearing (LRB) exposed to low temperature. For this purpose, a full-scale LRB was conditioned at temperatures of −20°C, −10°C, 0°C, and 20°C for 24 hours and then subjected to displacement-controlled cyclic motions that correspond to various levels of shear strains. Tests were conducted with loading frequencies of 0.1 and 0.5 Hz. Recorded force–displacement curves were used to quantify the variation in isolator properties, namely, post-yield stiffness and characteristic strength (force intercept at zero displacement). Test results revealed that both post-yield stiffness and characteristic strength increase with decreasing temperature. The amount of increment becomes even larger with decreasing shear strain. Characteristic strength is found to be more prone to change in temperature compared with post-yield stiffness.
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Acknowledgments
This study was funded by the Turkish Scientific and Technical Research Council (TÜBİTAK) under grant number 119M573, which the authors gratefully acknowledge. The first author has a scholarship from the 2211A program of the TÜBİTAK and the 100/2000 program of the Council of Higher Education (YÖK).
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Information & Authors
Information
Published In
Journal of Cold Regions Engineering
Volume 37 • Issue 3 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Aug 19, 2022
Accepted: Jan 12, 2023
Published online: Apr 18, 2023
Published in print: Sep 1, 2023
Discussion open until: Sep 18, 2023
ASCE Technical Topics:
- Continuum mechanics
- Design (by type)
- Displacement (mechanics)
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Load factors
- Load tests
- Material mechanics
- Material properties
- Materials engineering
- Measurement (by type)
- Mechanical properties
- Motion (dynamics)
- Solid mechanics
- Stiffening
- Strain
- Structural behavior
- Structural design
- Structural engineering
- Structural mechanics
- Temperature effects
- Temperature measurement
- Tests (by type)
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