2005 Volume 43 Issue 11 Pages 18-26
Recently, core wall structures are increased because of omitting columns and beams inside living space. It is realized of the new kind structure with ECC (Engineered Cementecious Conposite) coupling beam that consume seismic energy. ECC have an especially tensile capacities and crack width restriction effect caused of small cracks dispersion under tensile stress. ECC is a cementecious complex material reinforced short fibers. Design requirement for the new structure's ECC coupling beam are 1) prevention of shear and bond failure and maintain of strength until 4% drift angle, 2) keeping under 0. 3 mm of crack width after earthquake. To satisfy these requirement, some structural tests were conducted to establish the structural design method for ECC beams. And, quality control method for making ECC beams at a pre-cast plant was in preparation. This paper contains these upper issues.
