Study of Foundation Rigidity and Flexibility Effects in Seismic Behavior of Moment Frame, Shear wall and Combination of Frame and Shear Wall
Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
SEE06_075
تاریخ نمایه سازی: 16 اردیبهشت 1390
Abstract:
In conventional designs, engineers use fixed base assumption for the analysis of structure. The base reactions are applied to the footing and soil in a separate analysis. Based on the results of the latter analysis, the structural design of footing, soil bearing capacity and settlement controlcan be performed. In this procedure the effects of the structure on the foundation, and on the contrary, the effects of the foundation on the structure are not considered precisely. As a result, this might cause a heavy design for a new structure or an inappropriate retrofit layout of anexisting building. In this study, a comparison has been made between the seismic behavior of structures with fixity assumption and flexibility assumption. In the flexibility assumption the structure, footing and soil are considered in a single analysis. For this purpose, three types of 2D conventional structures have been modeled by SAP2000. These structures have been analyzed using linear static and nonlinear static (Pushover) methods. These models include moment frame, shear wall and dual system composed of frame and shear wall. Based on the achievements of this study, preliminary design recommendations for the structures and substructures interactive effects will be presented
Keywords:
Rigidity and Flexibility of Foundation - Soil-Structure Interaction - SeismicStructure behavior Pushover Analysis
Authors
a Eslami Amirabadi
Graduate Student of Soil Mechanic and Foundation Engineering, Faculty of Civil Engineering University of Tehran
S.R Mirghaderi
Assistant Professor, Faculty of Civil Engineering, University of Tehran
b Gatmiri
Professor, Faculty of Civil Engineering, University of Tehran
s.a Razavi
PHD Candidate of Structural Engineering, Faculty of Civil Engineering, University of Tehran