56 建設段階に伴う2階建て在来工法木造住宅の振動特性の変遷

概要

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The transition of dynamic characteristics of timber structures in accordance with the construction stage is obtained by the measurement of microtremors. The measurements are carried out at the following three stages; (1) frame work with bracing members are completed, (2) walls are attached to frames, (3) structure is completed. The main results are as follows; The natural frequency and the damping constant of structure become higher with the construction stage. The relation of natural frequency and damping constant is approximately linear in every construction stage. The swaying and the rocking ratios gradually increase in accordance with the construction stage. The spring constants obtained by experiments exist from 20 tf/cm to 50 tf/cm in first floor and 10 tf/cm to 30 tf/cm in second floor at the third stage of the construction. It becomes clear after comparing the experimental and calculated results that the spring constant obtained by the resistant factor is underestimated from one over two to one over four.
一般社団法人日本建築学会の論文
1998-03-20