JAPANESE SEISMIC DESIGN OFHIGH-RISE REINFORCED CONCRETE BUILDINGS- AN EXAMPLE OF PERFORMANCE-BASED DESIGN CODE ANDSTATE OF PRACTICES -

摘要

This paper briefly reviews the development of seismic design requirements and the construction of highrisereinforced concrete buildings in Japan. The Urban Building Law limited the building height to 100feet in 1919. The 1963 revision of Building Standard Law removed the height limitation, but the lawrequired that the design and construction of high-rise buildings should be approved by the Minister ofConstruction because of their importance in the society and also because of the severe damage of high-risebuildings in the 1923 Kanto (Tokyo) Earthquake Disaster. The high-rise building of reinforced concretewas realized in the mid 1970s with the demand for high-quality condominium and apartment buildings inurban areas. Performance-based design regulations were introduced in the 1998 revision of BuildingStandard Law. A separate notification was issued to define performance requirements for high-risebuildings, but no design calculation methods were specified. This paper presents the state of practices tosatisfy the performance-based regulations for gravity loads, snow loads, wind forces and earthquake forceswith emphasis on the design of reinforced concrete structures.