The design of earthquake-resistant buildings starts with defining the maximum lateral earthquake forces or their resultant. The amount of these forces depends on various factors, including coefficient of system behavior ...

In this article, the effect of earthquake frequency content and noise effects on damage detection is inspected. For this purpose, the damage was defined as nonlinear behavior of beams and columns, and several ground motion ...

One of the methods for seismic retrofitting in reinforced concrete structures is the application of steel braces. In this paper, the effect of concentric and eccentric bracing systems on the seismic performance of dual ...

This paper presents the results of a series of small-scale model tests and numerical analyses conducted on circular and ring model footings located near geogrid reinforced sand slopes. Layers of geogrid were applied as ...

With energy resource scarcity and energy crisis in the world, energy efficiency has become a subject of great importance. In warm and humid climates along with cold and mountainous ones, annual energy consumption is too ...

In recent years, Partially Encased Composite columns are evaluated as new achievements in the field This paper presents a combined experimental and theoretical study on the mechanical performances of six octagonal PEC ...

Alteration in earthquake input energy correspond with changes in characteristics of the various existing structures, particularly in hysteretic states, has not been examined to such extent that creates enough confidence ...

The effect of intelligent semi-active thermal exchange-fuzzy controller in structural rehabilitation by attenuating seismic responses of structural systems is investigated. In the suggested structural controller, MR dampers ...

An experimental study has been conducted on the effectiveness of two types of flow-altering countermeasures placed around a cylindrical pier under clear water condition, which consists of sacrificial piles and submerged ...

This paper suggests a two-step approach for damage prognosis in long trusses in which the first step deals with locating probable damages by wavelet transform (WT) and static deflection derived from modal data with the ...

In this article a physical model is presented. A trapezoidal shape of channel with 1.45 m width, 1 meter depth and banks slope of 1H: 1.5V was applied. Circular piers (6, 8 and 10cm diameter) were examined under three ...

Dimensionless coefficient (l) in convergence confinement method indicates the relaxation of stress in the wall of the tunnel at different excavation movements. This factor is  contemplated a constant number in previous ...