详情

原文传递 Seismic Response of Low-Rise Masonry Buildings With Flexible Roof Diaphragms

题名：	Seismic Response of Low-Rise Masonry Buildings With Flexible Roof Diaphragms
作者：	Cohen, G. L.; Kilngner, R. E.; Hayes, J. R.; Sweeney, S. C.
关键词：	Earthquakes; Seismology; Masonry; Diaphragms(Mechanics); Structural engineering; Roofs; Shear properties; Scale models; Dynamic response; Buildings; Elastic properties; Coherence; Prototypes; Research facilities; Ground motion; Degrees of freedom; Construction; Mathematical prediction; Linearity; Scaling factor; Geometry; Flexible structures; Transverse
摘要：	This study compares the responses from shaking-table testing and analytical predictions evaluated in the context of geometric scaling, to provide a coherent description of the seismic response of low-rise masonry buildings with flexible roof diaphragms. Two half-scale, low-rise reinforced masonry buildings with flexible roof diaphragms are subjected to carefully selected earthquake ground motion on the Tri-axial Earthquake and Shock Simulator at the Construction Engineering Research Laboratory. Damage to the half-scale specimens is assessed using published protocols. Geometric scaling analysis relates response and damage of the half-scale specimens to those of the full-scale prototype structures. Linear elastic modeling is simplified to a generalized two-degrees-of-freedom idealization. Response-spectrum analysis of such an idealization is accurate and justified for prediction of dynamic response of the half-scale specimens and the corresponding full-scale prototype. It is shown that low-rise masonry buildings with flexible roof diaphragms can be designed for seismic loads as single-degree-of- freedom systems, using the degree of freedom associated with the in-plane response of the diaphragm in the building's transverse direction, rather than the degree of freedom associated with the in- plane responses of the shear walls.
总页数：	147p
报告类型：	科技报告