観測記録に基づく木造2階建て住宅とRC造5階建て建物の動的相互作用 : 木質構造物の地震入力に関する研究(その1)

概要

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The dynamic soil-structure interaction of two storied contemporary timber houses and a five storied R/C structure are investigated from the earthquake observations and microtremor measurements. Comparison is made on the elongation ratio of natural period and the damping effect between a five storied R/C structure and two storied timber houseses. The main results are as follows ; The elongation ratio of natural period of the soil-building system to the building system is about 30〜42% on a five storied R/C structure in case of microtremors and during earthquakes. On the other side, this is only about 3〜4% on two storied timber houseses, and becomes about 4〜6% during earthquakes. The damping effect is also large in case of a R/C structure than two storied timber houses. For the reasons stated above, the reduction of input motion to timber houses should be considered in case of structural design after ascertaining the soil-structure interaction effect from observation of many earthquake waves.
2001-10-30