| Summary: | 碩士 === 朝陽大學 === 營建工程研究所 === 86 === ABSTRACT
Tapered members are often used to achieve economy in order to save
weight, or to satisfy architectural requirement in steel structural design.
However, it is found that the subject of nonprismatic member has been
studied very little for most of the research reports or papers in recent 30
years.
From above, Discrete Element Model and incremental numerical
method are used for developing a modified stiffness matrix method and a
computer program with a very high generality to solve steel structure
stability problems and produce effective length factor for tapered column
member.
Material nonlinearity and geometric nonlinearity are both considered
in this study for analyzing. For analysis results, this study suggested a series
of simple equations for effective length factors for tapered steel
columns. The analysis for solving considered that the tapered steel
columns behave inelastically.
Also, the experimental work which include some full scale of tapered
steel members for determining the effective length factors in considered in
this study. For verification, the results of the experimental work are going
to be compared with the theoretical results in this study.
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