A simplified model for the analysis of free plan buildings using a wide-column model
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
ELSEVIER SCI LTD
Abstract
In early stages of the design of a free-plan building different structural layouts should be evaluated to achieve a satisfactory level of seismic performance. However, the urgency of initial stage decisions needed by architects and developers makes the use of complex 3D structural models impractical. For this reason, a tool that can evaluate with acceptable accuracy the expected seismic performance of these configurations is necessary. This paper introduces a simplified building model that includes the flexural contribution of the slabs, and models the shear wall cores using a wide column analogy that includes warping effects. The model introduces kinematic constraints to account for the interaction between walls and slabs. Comparison of modal and response-histories with those given by a 3D finite element model shows that the proposed model has good accuracy, leading to errors usually less than 15%. Finally, the model has been devised to include other shear-wall structural configurations, energy dissipation systems, and the inelastic behavior of walls. (C) 2013 Elsevier Ltd.. All rights reserved.
Description
Keywords
Free plan buildings, Flexural stiffness of slab, Wide column analogy, Kinematic constraints, VIBRATION, CORES