A robust method for optimization of semi-rigid steel frames subject to seismic loading

2018 ◽  
Vol 145 ◽  
pp. 184-195 ◽  
Author(s):  
Viet-Hung Truong ◽  
Seung-Eock Kim
Keyword(s):  
Steel Frames ◽  
Seismic Loading ◽  
Robust Method

Analytical Models for Determining Rotational Capacity of Clip-Angle Connections under Seismic Loading

2014 ◽  
Vol 1025-1026 ◽  
pp. 979-986
Author(s):  
Jong Wan Hu ◽  
Hong Min Son
Keyword(s):  
Mathematical Models ◽  
Curve Fitting ◽  
Steel Frames ◽  
Seismic Loading ◽  
Full Scale ◽  
Analytical Models ◽  
Cyclic Loads ◽  
Structural System ◽  
Ductile Behavior ◽  
Partially Restrained

This paper explores rotational capacities and demands in thick top-and-seat (cleated) angle partially restrained connections subjected to monotonic and cyclic loads. The results of test on full-scale angle connections are described first, and are then compared to published curve-fitting models for these types of connections. The data indicates that the curve-fitting constants of some existing mathematical models cannot be extrapolated to thick angles. The results indicate that these connections are capable of providing very ductile behavior and constitute an ideal back-up structural system in steel frames.

scholarly journals Strengthening of masonry structures using steel frames

2012 ◽  
Vol 2 (1) ◽  
pp. 50 ◽  
Author(s):  
Angeliki Papalou
Keyword(s):  
Seismic Behavior ◽  
Steel Frames ◽  
Seismic Loading ◽  
Seismic Resistance ◽  
Masonry Walls ◽  
Masonry Structures ◽  
The Finite Element Method ◽  
Linear Elastic ◽  
Historic Structures

Many old masonry structures have not been maintained properly and have been left exposed to future seismic loading with only their exterior masonry walls. These structures can be strengthened using different techniques with the reversible ones being more appropriate for historic structures. The seismic behavior of masonry buildings left only with their perimeter walls and retrofitted using steel frames (a reversible technique) is investigated. The role of the connection of the steel frames with the masonry walls is analyzed. Linear elastic analysis is performed using the finite element method. The seismic resistance of the aforementioned buildings increases when there is a closed-spaced connection of the steel frame columns with the masonry walls. The connection of the masonry walls at the floor level with the interior structure is also beneficial to the buildings seismic behavior.

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