EXPERIMENTS ABOUT THE TEMPERATURE DEPENDENCY OF HIGH DAMPING RUBBER BEARINGS DUE TO THE DIFFERENCES OF SHEAR STRAIN AND VERTICAL COMPRESSIVE STRESS

DOI Web Site 1 References

Bibliographic Information

Other Title
  • 高減衰ゴム支承のひずみ量と面圧の違いによる温度依存性の実験的検討

Description

<p> According to past researches, the mechanical characteristics of rubber bearings which used as seismic isolation devices in bridges depend on temperature. To use the devices in cold region, it is important to evaluate about the temperature dependency of the mechanical characteristics of rubber bearings. Therefore, this study discusses the mechanical characteristics of HDRBs by dynamic loading tests under the low temperature environment. Fundamental cyclic loading tests at different temperatures were conducted using 2 types of HDRBs (HDReX and HDR-S). The specimens were tested under shear deformation with a constant vertical compressive stress of 6MPa. Sine waves were applied in the horizontal direction to the specimens. The period of the sine wave was 2.0 sec, and the shear strain was 175%. In these tests, Equivalent stiffness and energy loss of all specimens increased under low temperature and its ratio depended on type of rubber. In the case of increasing shear strain, the temperature dependencies of the equivalent stiffness and energy loss were lower than the result of the fundamental tests. And in the case of decreasing vertical compressive stress, the temperature dependencies were equivalent to the fundamental tests.</p>

Journal

References(1)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top