The Effect of Soil Specifications, on the Maximum Inelastic Displacement of Industrial Steel Structures with Overhead Cranes

According to the construction of industrial steel structures in developing countries, the importance of studying the seismic behaviour of such kinds of structures becomes evident. In this research, the overall structural behaviour is briefly described and 3 existing models of industrial steel structures with overhead cranes are selected. All models are assumed to have bolted connections, for which the damping ratio for all of them is taken into account equal with 10% of critical damping ( zeta;=10%), for nonlinear analysis. Equivalent Linear Static Analyses and structural design of nbsp; models are completed, using AISE, and 4th ver. of Iranian 2800 seismic code. Then, accelerograms recorded on 3 soil categories of Rock (750 Vs 1200m/s), Dense Soil (375 Vs 750m/s) and Loose Soil (175 Vs 375m/s) respectively, are selected according to 2800 seismic code and scaled to Sa = 0.25g Sa = 0.35g spectral acceleration levels. Total 180 Nonlinear Time History analyses are completed for all designed finite element models, using above mentioned scaled records. Finally, the results of Maximum Inelastic Displacements, obtained from Nonlinear Time History Analyses of nbsp; finite element models, according to the above mentioned spectral acceleration levels and based on 3 soil categories are studied, summarized and discussed