comparison of energy dissipation, stiffness, and damage of structural oriented strand board (osb), conventional gypsum, and viscoelastic gypsum shearwalls subjected to cyclic loads比较能量耗散、刚度和破坏结构定向结构刨花板(的osb),传统的石膏,石膏粘弹性抗剪力墙承受循环载荷.pdfVIP

Buildings 2012, 2, 173-202; doi:10.3390/buildings2030173 OPEN ACCESS buildings ISSN 2075-5309 /journal/buildings/ Article Comparison of Energy Dissipation, Stiffness, and Damage of Structural Oriented Strand Board (OSB), Conventional Gypsum, and Viscoelastic Gypsum Shearwalls Subjected to Cyclic Loads David W. Dinehart 1,* and Andrew S. Blasetti 2 1 Department of Civil and Environmental Engineering, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, USA 2 Thornton Tomasetti, 744 Broad Street, Newark, NJ 07102, USA; E-Mail: ablasetti@ThorntonT * Author to whom correspondence should be addressed; E-Mail: david.dinehart@; Tel.: +1-610-519-4962; Fax: +1-610-519-6754. Received: 3 May 2012 / Accepted: 11 June 2012 / Published: 28 June 2012 Abstract: A key element in the seismic load resisting system of a wood framed structure is the shear wall which is typically sheathed on one side with plywood or oriented strand board (OSB) and gypsum on the other. The shear capacity of gypsum sheathed shear walls is typically neglected in high seismic areas due to the susceptibility of conventional drywall screw connections to damage caused by earthquakes. The earthquake resistance of an innovative viscoelastic (VE) gypsum shearwall is evaluated and compared to conventional structural and non-structural walls. Ten 8 ft × 8 ft wood framed wall specimens of three configurations [nailed-OSB, screw-gypsum, and VE polymer-gypsum] were subjected to a cyclic test protocol. The energy dis