Abstract
The objects of this paper are to expansion of proposed reducing rate due to opening effect for estimating the shear strength of shear wall with opening periphery above 0.4. The proposed reducing rate ru is expressed as follows,
ru=√ΣAe/hl (1)
In order to examine the validity of proposed reducing rate ru, the experiments were carried out by specimens having opening periphery above 0.4. The shear strength calculated by using Eq. (1) was compared with authors' and other researchers' experimental results. It was recognized that the results are very much in agreement with experimental results. And the relationships are not found with break mode. Eq. (1) is applied to the shear walls with opening until the opening periphery ratio 0.6.
