In the current study, the effects of Casimir force and squeeze film damping on pull-in instability and dynamic behavior of electrostatically actuated nano and micro electromechanical systems are investigated separately. Linear elastic membrane theory is used to model the static and dynamic behavior of the system for strip, annular and disk geometries. Squeeze film damping is modeled using nonli...

The behavior and design of four-legged controlled rocking bridge steel truss piers to three components of seismic excitation are presented in this paper. The controlled rocking approach for seismic protection allows a pier to uplift from its base, limiting the force demands placed on the bridge pier and deck, and can allow the structure to remain elastic during an earthquake, preventing damage ...

To achieve better structural performance, lesser damage along with minimum residual displacements is a main objective of earthquake resistant design. In ordinary steel reinforced concrete frames, chances of severe damage because of the lower strength of conventional steel are always present during strong earthquakes. With the invention of high-strength steel (HSS) it can be anticipated that its...

Abstract A nine-story reinforced concrete dual system (wall-frame) building located in Bucharest, categorized as plan-asymmetric and designed according to the provisions of Romanian European codes was studied. The criteria for regularity plan were verified comparatively three (Eurocode 8, ASCE 7-16 seismic design code P100-1-2013). behaviour studied further investigated by detailed nonlinear st...

Rocking isolation of structures is evolving as an alternative design concept in earthquake engineering. The present paper investigates the seismic performance of an actual overpass bridge of the Attiki Odos motorway (Athens, Greece), employing two different concepts of rocking isolation: (a) rocking of the piers on the foundation (rocking piers); and (b) rocking of the pier and foundation assem...

The seismic evaluation of existing buildings is a more troublesome assignment than the design new buildings. need for becomes necessary to know level structural damage and how cure it due earthquakes. shows structure’s behavior under loads determines ultimate capacity structure, there are several methods used in assessment analysis which may be static or dynamic. In this study, an educational b...

As widely known, connections performance under seismic loads can significantly affect the structural response of RC precast buildings. Within scientific community, an increasing number studies has been carried out on this topic, in light recent earthquake aftermaths all over Europe. Indeed, turned to be weakest part structures and their failure often provoked global collapse whole building. The...

This study describes the seismic assessment of Archangeloi (Başmelekler) Church in Kumyaka (Sige), Türkiye. The is an important religious monument that has survived to present day from eighth century. Through field surveys, structural system, damages and masonry texture were determined. Pushover analysis was performed with OpenSees software, which advanced nonlinear capability. Damage TC3D mate...