Strength and energy dissipation of timber shear walls subjected to arbitrary deformation history study on fatigue behavior of timber structures subjected to repeated earthquake motions: Part 1

摘要

Repeated cyclic loading is thought to decrease the force and deformation capacity of timber shear walls due to the fatigue behavior. This study evaluates the strength and energy dissipation of two typical timber shear walls subjected to various deformation histories to develop a response spectrum method considering the fatigue behavior. Static loading tests and shaking table tests were conducted to observe the performance deterioration. Finally, evaluation formulae for strength and equivalent damping ratio were proposed. The formulae could predict the test results with acceptable accuracy. In‐plane shear behavior of timber shear walls like wooden brace walls or plywood sheathing walls has a dependency on loading protocol. In this paper, evaluation formulae for strength and energy dissipation of timber shear walls subjected to arbitrary deformation history are proposed. The accuracy is confirmed through comparison with static repeated cyclic loading test and shaking table test.