一方向水平加力実験による実在木造建物の耐震性能の検討

概要

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A static lateral loading full-scale test is done for the actual two-storied wooden houses. The purpose of the test is to investigate the load-deformation relationship, to compare the observed with designed strengths, and to know the process of progressive failure. The results of the static loading test are described also with the summary on the construction of the testing houses and the loading and observing methods of the test. The principal conclusions obtained are summarized as follows: 1) The load and the deformation have almost linear relationship until the average angle of relative shear deformation of the houses becomes 1/120 rad., the allowable limit in the usual seismic design of wooden structures for moderate eathquakes. 2) The lateral strengths of the whole structure and its frame consisted of braces, columns and beams are more than 1.5 and about 0.5 times the required design strength, respectively. 3) The lateral strength suppored by wall elements is up to 80% of the total one of the whole structure. 4) The break at the top of some columns in the first story finally results in the collapse of this story and then the inertial force of a heavy tiled roof caused by the succeeding falling of upper story produces the total collapse of the houses.
1998-04-30