| Title | Experimental Studies of the Mechanical Properties of Three Types of Seismic Isolation Bearings. |
| Authors | Aiken, Ian D.; Kelly, James M.; Clark, Peter W.; Tamura, Kazuo; Kikuchi, Masaru; Itoh, Tetsuji |
| Publication | Proceedings of the Tenth World Conference on Earthquake Engineering, July 1992 |
| Objectives | An extensive series of tests aimed at confirming or refining existing analytical models of three types of isolation bearings by fully identifying their mechanical properties. |
| Abstract | The results of an extensive series of experimental tests to identify the mechanical characteristics of three types of isolation bearings are presented. Two types of high-damping rubber bearings and one type of lead rubber bearing were studied. Cyclic horizontal displacement tests, varying the test parameters of shear displacement amplitude, axial load, and loading frequency were performed on all of the bearings. Bearing shear stiffness and damping properties were investigated in terms of different test parameters. Ultimate-level tests consisted of monotonic shear loading to failure at several different axial loads, and tension failure tests of the bearings with bolted connections. Rollout instability tests of the doweled bearings were conducted. Comparisons are made between experimental results and available analytical relationships for material and bearing properties. |
