NEHRP Clearinghouse

Title
Seismic Shears and Overturning Moments in Buildings.
File
PB275678.pdf
Author(s)
Smilowitz, R.; Newmark, N. M.
Source
National Science Foundation, Washington, D.C. Research Applied to National Needs., July 1977, 145 p.
Identifying Number(s)
['STRUCTURAL RESEARCH SER-441', 'UILU-ENG-77-2011']
Abstract
Seismic force distributions for simplified computation of shears and over-turning moment for preliminary design of buildings have been generated. A parameter study of the significant variables has been made to determine the applicability of the proposed distributions. These distributions are intended to give greater accuracy than do existing procedures. The parameters studied involve the type of building, whether shear wall or shear beam or a combination of the two, the uniformity of the structure along its height, the spacing of the lower modal frequencies, the fundamental frequency relative to the intersection of the constant velocity and constant acceleration branches of the response spectrum, the slenderness of the structure, and the shear wave velocity of the soil on which it is founded. The distributions should be applicable to the majority of structures of either frame, shear wall or combination of the two lateral resisting structural systems. The results of the study along with the explanation of the methods by which they were obtained are presented. Tabular and graphic material are included.
Keywords
Seismic waves; Ground motion; Buildings; Skyscrapers; Earthquake engineering; Earthquake resistant structures; Theses; Seismic design; Earthquakes; Soil structure interactions; Shear properties; Earth movements; Soil mechanics; Dynamic structural analysis