This study evaluates the seismic risk of weak first-story reinforced concrete (RC) structures retrofitted with inerter dampers at their ground level when subjected to narrow-band excitations. The main advantages brought about by ground-level inerters are reductions in demands (e.g., drifts, floor accelerations). shows that reliable systems terms peak story drifts for large motions. For moderate...

The objective of this investigation is to evaluate the FEMA-356 Nonlinear Static Procedure (NSP) and a recently developed Modal Pushover Analysis (MPA) procedure using recorded motions of four buildings that were damaged during the 1994 Northridge earthquake. For this purpose, the motions at non-instrumented floors are “derived” from the motions at instrumented floors by using cubic spline inte...

The former Imperial County Services (ICS) Building is a rare case of an instrumented building damaged by an earthquake. In this paper, it is used to test a structural health monitoring method, based on detecting novelties in the recorded seismic response, by examining the correlation between their occurrence, spatial distribution and magnitude with the degree of the observed damage. The novelti...

This article presents numerical studies on semi-active seismic response control of structures equipped with Magneto-Rheological (MR) dampers. A multi-layer artificial neural network (ANN) was employed to mitigate the influence of time delay, This ANN was trained using data from the El-Centro earthquake. The inputs of ANN are the seismic responses of the structure in the current step, and the ou...

The aim objective of this study is to investigate the effects of near-field earthquakes on the response of mid-rise buildings with tubular structure.  For this purpose, a 20-story building with a square plan of six by six bays, all with 6 m span, and story height of 3.70 m is considered.  Axial force of columns, shear lag, and inter-story drift values are used as the main response parameters. N...

Due to low stiffness of braces after yielding, the structures with buckling-restrained braces (BRBs) experience high residual drifts during an earthquake, which can be intensified by aftershocks and causes considerable damages to structures. Also, due to poor distribution of stiffness, this problem is exacerbated for irregular structures. Recently, the yielding brace system (YBS) has been intro...

This paper comprehensively evaluates the Modal Pushover Analysis (MPA) procedure against the ‘‘exact’’ nonlinear response history analysis (RHA) and investigates the accuracy of seismic demands determined by pushover analysis using FEMA-356 force distributions; the MPA procedure in this paper contains several improvements over the original version presented in Chopra and Goel (2002). Seismic de...

Sustainability addresses the need to reduce structure’s impact on environment but does not environment’s structure. To explore this relationship, study focuses quantifying of green roofs or vegetated seismic responses such as story displacements, interstory drifts, and floor level accelerations. Using an archetype three-story steel moment frame, nonlinear time history analyses are conducted in ...

Most regional seismic damage assessment (RSDA) methods are based on the rigid-base assumption to ensure evaluating efficiency, while these practices introduce factual errors due neglecting soil–structure interaction (SSI). Predicting influence of SSI responses regionwide structure portfolios remains a challenging undertaking, as it requires developing numerous high-fidelity, integrated models c...