抄録
The general influence of long term load upon shear behavior of nailed shear walls was confirmed in in-plane shear test of the shear walls in which the devices to measure the axial force acting on the bottom reinforcements were installed. The 24 experimental parameters are decided by the combination of presence of nailing on sill through sheet, connection types between columns and sill, and the several magnitude of long term loads. The formulae to calculate the shear resistance corresponding to the apparent shear strain of 1/120 rad. and the maximum shear resistance were derived considering the influence of long term load. The formulae were experimentally examined for their validity.