Experimental Study on Dynamic Behavior of Wooden Frames with Passive Control System and Inner-And-Outer Walls Using Shaking Table

Abstract eng:
In Japan there are 10 million inadequate wooden houses against building standard law and most of them (approximately 90 percent) are composed of conventional post-and-beam. Passive control schemes to mitigate their seismic damage are important. In order to reduce seismic response and damage of wooden houses effectively, a series of so-called shear-link-type passive control systems, which include both velocity- and deformation-dependent dampers were proposed. A number of shaking table tests of the full-scale two-story wooden frame specimens were carried out and the dynamic behavior of the specimen having only structural elements were figured out. However nonstructural element is had to consider when passive control system is applied to wood frames. In this study, a number of shaking table tests of the full-scale two-story wooden frame specimens with inner and outer walls were carried out. Gypsum board, ceramic siding and mortar were used as inner and outer walls. The amount of inner and outer walls of the specimens is determined by the amount of inner and outer walls of real house. The performance of the specimens is discussed by referring to story drifts, story shear forces with a focus on behavior of inner and outer walls. The dynamic property of the structures such as equivalent first eigenfrequency is also discussed.

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