NEHRP Clearinghouse
- Title
- DRAIN-TABS: A Computer Program for Inelastic Earthquake Response of Three-Dimensional Buildings.
- File
- PB270693.pdf
- Author(s)
- Guendelman-Israel, R.; Powell, G. H.
- Source
- National Science Foundation, Washington, D.C.; Ford Foundation, New York., March 1977, 147 p.
- Identifying Number(s)
- UCB/EERC-77/08
- Abstract
- A computational procedure and computer program for the inelastic dynamic response analysis of three-dimensional buildings of essentially arbitrary configuration is described. The building is idealized as a series of independent plane substructures interconnected by horizontal rigid diaphragms. Each substructure can be of arbitrary geometry and include structural elements of a variety of types. It is not necessary for all substructures to connect to all diaphragms, so that structures with independent diaphragms of some levels can be idealized (as, for example, two towers connected only at the top floors). The analysis makes use of substructuring techniques to improve computational efficiency. The major limitation is that the coupling of the substructures through common columns is not fully taken into account, so that the idealization is not suitable for tube-type buildings. The structure idealization is explained, and the computational procedure and computer program logic are described. Instructions to be followed when adding new elements to the program are presented. A computer program user's guide and an illustrative example are included.
- Keywords
- User needs; Substructures; Dynamic response; Buildings; Earthquake engineering; Drain Tabs computer program; Computer programming; Loads (Forces); Earthquakes; Dynamic structural analysis