EFFECT EVALUATION OF ROTATIONAL RESTRAINT OF COLUMN BASE ON MECHANICAL CHARACTERISTICS OF TRADITIONAL TIMBER BUILDINGS WITH LARGE HANGING WALLS

Abstract

In this paper, for traditional timber buildings with large hanging walls, we reveal the effect of the seismic reinforcement by rotational restraint of column base for the purpose of strength improvement. The followings are considerations in seismic reinforcement by rotational restraint of column base. i) The reinforcement can improve strength of the structure, while it is possible to reduce deformation performance. ii) To effectively obtain strength improvement in the reinforcement, it is important to properly evaluate the decrease of rotational restraint of columns at the joints as the structure deforms and the flexural capacity reduction of columns.