Analysis and Modeling of Base Plates Under the Effect of Different Loads

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Abbaspour, Hamid | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40199 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Mofid, Masoud
Abstract:
In steel structured buildings the connection of columns to foundations is of practical significance. This connection customarily is performed by a base plate, which is connected to the foundation with bolts. The columns and base plates are usually prepared separately, and later are welded together by contractors. Due to the errors in the process of fabrication, these plates are proposed with larger dimensions than those suggested by the designers. However, it is believed that the utilization of stiffeners, which are welded to the columns in a perpendicular state, reduces the stress field inside the base plates significantly. Therefore, by use of stiffeners the thickness of base plates can be reduced, which results in economical benefits. In this M.Sc. project the effects of stiffeners on the behavior of the base plates under moments and compressive loads. For this purpose with the aid of robust software, various models of base plates are analyzed and their rigidities are scrutinized. As a result two different simplified formulas are proposed for rigidity and the stress field caused by compressive loads.
Keywords:
Steel Structures ; Base Plate ; Stiffener ; Compressive Force ; Computer Modeling

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