Sakuragi, K.

Ductility reduction factor of steel sheet shear wall used in steel framed house

Abstract eng:
The notification that is specified by the Ministry of Land, Infrastructure and Transport was revised in 2012 to make it possible to construct four story Steel Framed Houses (SFH) in Japan. To construct a four story SFH, a high performance shear wall was developed and its characteristics were determined by full scale cyclic testing. The methodology to obtain the seismic design factor is based on monotonic loading test, and does not consider the hysteresis behavior directly. Therefore, the newly developed shear wall cannot take advantage of less pinching behavior with high capability of energy absorption. In this study, a derivation of the seismic design factor for the newly developed high performance shear wall is presented. To include the hysteresis behavior of the newly developed shear wall, a time history analysis with full model of the Archetype structure was conducted. A total of 118 ground motion records were used to conduct Incremental Dynamic Analysis (IDA), and the seismic design factor Ds proposed. The time history analysis showed the advantage of less pinching behavior, and yielded a small Ds value that can be used in design. Finally, the derived Ds value was verified as per FEMA P 695, which is the verification methodology based on probability assessment. The results obtained from FEMA P 695 showed that the newly developed shear wall had adequate safety margin.

Contributors:

Sato, A.

Publisher:

Taylor and Francis Group, London, UK

Conference Title:

Insights and Innovations in Structural Engineering, Mechanics and Computation

Conference Title:

Sixth International Conference on Structural Engineering, Mechanics and Computation

Conference Venue:

Cape Town, South Africa

Conference Dates:

2016-09-05 / 2016-09-07