Masatoshi Murai

A PROPOSAL OF FACADE PANEL SYSTEM SUITABLE FOR THE SUSTAINABLE BUILDING STRUCTURE SYSTEM

To reduce the global environment load, a sustainable building structure system (SBS), which is one of the damage control structures, has been researched and developed. However it is difficult for this system to apply conventional facade panels in case of a huge earthquake. In this study, the authors propose a new facade panel system that suits to large story deformation angle of the SBS. Basic performance of the proposed system is confirmed by experiments using scale-down model that have rotational pin and slipping connections.

EXPERIMENTAL STUDY ON BUCKLING RESTRAINED BRACES USING STEEL MORTAR PLANKS WITH INITIAL IMPERFECTIONS

This paper describes static cyclic loading tests of buckling restrained braces using steel mortar planks with initial imperfections. Experimental parameters are initial deflection of core plates due to uneven of mortar face and direction of core plates. Tests are conducted by applying increasing loads alternately in positive and negative directions. As results, the energy absorption capacity of specimens with initial imperfection is lower than that without initial imperfection; however, the absorption capacity is larger than that of required value.

BUCKLING-RESTRAINED BRACES USING HIGH PERFORMANCE HARD POLYURETHANE FOAM

The authors developed a buckling-restrained brace for using steel framed houses. The buckling-restrained brace is small-sized and light-weighted with a restraining part of hard polyurethane or mortar. Conducting static and cyclic axial loading tests, elastoplastic and stiffening properties are difined. Specimens with the restraining parts of various restraining forces were fabricated. The authors considere the test data on cumulative ductility factors and cumulative plastic strain energy, and evaluate its performance.