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Usually structures are designed under codes based on the assumption that the soil stiffness is infinite, so the foundation rests firmly on the soil. In many cases, the overturning moment due to the lateral forces may exceed the resisting moment due to the gravity forces...

The goal of this research is to study the effect of the space between long and short piles beneath combined deep foundation caps on the forces acting on piles and the resulting summit, all done by considering variables such as; short pile length, soil pad stiffness (cus...

The use of numerical methods, particularly finite element methods in solving different problems are used in abundance. Because these methods are approximate, having a real understanding of the extent and distribution of the errors is extremely important. Studies show th...

Ground motions recorded in near-fault sites, where the rupture propagates toward the site, are significantly different from those observed in far-fault regions. In this research, finite element modeling is used to compare the effects of near- and far-fault ground motion...

Common attenuation equations are developed by seismic records which belong to earthquakes that have happened so far. Although there are many recorded data during last 50 years, it is not possible to consider all possible wave propagation paths, site types and fault rupt...

Effects of propagation and scattering of high pressure waves same as blast waves are always interested for researchers. In this paper, the additional air pressure due to blast waves near topographic irregularities is considered. Regarding this study, it is clear that ad...

Reinforced concrete reservoirs (RCR) have been used extensively in municipal and industrial facilities for several decades. The design of these structures requires that attention be given not only to strength requirements, but to serviceability requirements as well. The...

Ductility, over-strength, material properties and design methodology are the factors affect the reduction rate of the lateral strength of structure in nonlinear region. These factors are introduced as Seismic Performance Parameters, SPP, in technical literature. In seis...

Column-tree moment resisting frames, as the efficient shop-welded and field-bolted structural systems, are used in many countries. Very limited research has been carried out on such systems under fire conditions. This paper presents experimental investigations of the be...

Reduced beam section (RBS) connection has known as a qualified rigid connection regarding AISC(2010) with acceptable ductility for Special Moment Resisting Frames (SMRF). Beam to column welded Connection with radius cut on beam flange is categorized as RBS connection in...