this study is investigated the optimum parameters for a tuned mass damper (tmd) under the seismic excitation. shuffled complex evolution (sce) is a meta-heuristic optimization method which is used to find the optimum damping and tuning frequency ratio for a tmd. the efficiency of the tmd is evaluated by decreasing the structural displacement dynamic magnification factor (ddmf) and acceleration ...

the purpose of this study is to determine the effect of vierendeel panel width and vertical truss spacing ratio in an inelastic behavior of the stf system due to earthquake loads. the stf system is applied to a six-storey building that serves as apartments [2]. the stf system is used in the building in the transverse direction (n-s direction), while in the longitudinal direction (w-e direction)...

This numerical analysis has discussed the behaviour of frame structure with eccentric infill wall opening modelled shell and strut elements. In beginning, validation models were created by following laboratory tests results. Then, a simple one-storey an was varying ratios taking angle formed to obtain equation for width that corresponds element model angles variation. The then applied 3-storey ...

The capacity of a structure can be assessed using inelastic analysis, requiring sophisticated numerical procedures such as pushover and incremental dynamic analyses. A simplified method for the evaluation seismic performance steel moment resisting frames (MRFs) to used in everyday practice has been recently proposed. This evaluates buildings employing an analytical trilinear model without resor...

Intra Infilled reinforced concrete (RC) frame (IF) is one of the most common types of structures used in low and medium rise building, especially in the area where affordable materials and labor are available, including in the area with high seismicity. Opening on the wall is part of the architectural design to house windows and doors of various sizes and location within the wall. Though openin...

Braces with intentional eccentricity (BIE) are recently proposed to improve the seismic behaviour of conventional buckling braces (CBBs) by inserting along brace length. Due this and resultant bending moment, BIE bends uniformly from small storey drifts moves smoothly into postbuckling under compression sustains trilinear tension. This delays appearance midlength local which causes unstable ene...

The present study focusses on the damping force control of shear mode magnetorheological (MR) damper for seismic mitigations. Therefore, the semi-active MR damper which can control the vibration is analyzed both experimentally and numerically. Carbonyl iron is used as the magnetic particle and Castrol Magnetec oil as carrier fluid throughout the study. MR damper is designed and fabricated, and ...

Design spectrum is known as an essential tool in earthquake engineering for calculation of maximum (design) responses in a structural system. Soil-structure interaction (SSI), as a phenomenon of coupling of responses of a structure and its underlying soil, was explored after introduction of design spectra and has not been taken into account in developing a design spectrum traditionally. To cons...