PERFORMANCE-BASED SEISMIC DESIGN OF MID-RISE LIGHT-FRAME WOOD BUILDINGS

摘要

Light-frame wood (woodframe) buildings are typically constructed four stories and below and thus their behaviour in high seismic regions was not studied extensively until the NEESWood Project from 2005-2010. During that project, a design approach for direct displacement design (DDD) of mid-rise woodframe buildings was developed and validated experimentally at full-scale on a six-story shake table test in Miki, Japan. In addition to inter-story drift, rod elongation and shear transfer were also key in ensuring the design performance expectations were achieved. This paper systematically presents the design approach ranging from shear wall selection through DDD to free-body diagram calculations for hold down rod diameter selection for shear wall stacks within the building. The six-story Capstone building is used as the example from start to finish including quantitative experimental validation.