Mehdi Ghassemieh; Vahid Zeynoddini Meymand
Abstract
The use of steel flush end-plate moment connection is practiced in the construction of the light steel frames around the world particularly in parts of Europe and US. In the past most research was concentrated on studying the behavior of the flush end-plate connection subjected to only monotonic type ...
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The use of steel flush end-plate moment connection is practiced in the construction of the light steel frames around the world particularly in parts of Europe and US. In the past most research was concentrated on studying the behavior of the flush end-plate connection subjected to only monotonic type loadings. The majority of that research carried out such investigation through experimental programs. Although experimental results reveal the behavior of such system to some extent, but the cost of using the numerical techniques such as finite element for the analysis appears to be much less and takes not long time and effort in comparison with the test program.
In this study, the numerical behavior of flush end-plate connection using finite element method is investigated. The moment-rotation characteristic of the connection when subjected to cyclic loading is obtained. The numerical results obtained in this study are compared with the experimental results of other researchers. Some of the pertinent parameters effecting on the overall behavior of the connection as well as the design equations obtained from the method of yield line analysis are discussed.
Mehdi Ghassemieh; Mehdi Jalalpour
Abstract
Today connections are playing an important role in the steel frames subjected to lateral seismic loading. The steel extended end-plate moment connection can play an important role in the steel frame when subjected to seismic loadings. In the past, this type of connection has been under investigation ...
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Today connections are playing an important role in the steel frames subjected to lateral seismic loading. The steel extended end-plate moment connection can play an important role in the steel frame when subjected to seismic loadings. In the past, this type of connection has been under investigation mainly when it was subjected to monotonic loading. After major recent earthquakes and failure of number of traditionally practiced moment connections in US, it seems that the extended end-plate moment connections can be qualified as a suitable semi rigid type connection to be used in the heavy steel frames.
In this article, the seismic behavior of the extended moment connection is investigated. Using the nonlinear finite element method of analysis and with the help of yield line analysis, the behavior of the connection, with the emphasis on the column depth and end-plate thickness effecting on the panel zone as well as the connection as a whole, is obtained and then the results are compared with those obtained from tests by other researchers. Plastic moment versus plastic rotation hysteresis, stress contours of the pertinent part of the connections and displacements are part of the results of this study. The difficulties arising in modeling and analysis technique, exists in such connection, is also discussed.
