SIMPLIFIED MODELING METHOD AND SEISMIC FORCE EVALUATION OF BUILDING STRUCTURES INVOLVING STIFF CORES

Study on Dynamic Behavior of Wooden Horizontal Hybrid Structure : Part1

Abstract

 In Japan, construction of wood structures for public buildings is encouraged for environmental reason. For example, low-rise large wood buildings sometimes involve RC cores to enhance the seismic performance and the fire resistance. However, it is difficult to evaluate seismic force distribution and stress between wood parts and core parts of such horizontal hybrid structures. In this paper, applicability of simplified modeling method by two-dimensional continuous body to simulate the unique basic vibration properties of horizontal hybrid structures is discussed. Based on the theoretical approach, practical formulae of amplitude and distribution of seismic force acting on wood parts are proposed. The accuracy is demonstrated by comparison with earthquake response analyses, and they give close agreement with them.