Near-fault pulse seismic ductility spectra for bridge columns based on machine learning

T Yang, X Yuan, J Zhong, W Yuan - Soil Dynamics and Earthquake …, 2023 - Elsevier
The seismic ductility spectra (SDS) method is a crucial tool to quickly evaluate the ductility
demand of bridge columns with varied constitutive models. However, conventional SDS …

Lead-rubber-bearing with negative stiffness springs (LRB-NS) for base-isolation seismic design of resilient bridges: A theoretical feasibility study

X Chen, K Ikago, Z Guan, J Li, X Wang - Engineering Structures, 2022 - Elsevier
Advanced seismic isolation devices and systems have been recognized as promising
measures toward resilient design of bridge structures. This paper proposes a base isolation …

Seismic behavior of strengthened RC columns under combined loadings

H Huang, M Guo, W Zhang, M Huang - Journal of Bridge …, 2022 - ascelibrary.org
Twenty-five reinforced concrete (RC) columns of section size 250× 250 mm were designed
and tested to study the seismic response considering the effect of loading case …

Response of structures to bidirectional seismic loading: research progress and future directions

R Roy, A Acharjya, A Roy, A Santra… - Journal of Structural …, 2022 - ascelibrary.org
Rigorous assessment of structural response to seismic excitation poses challenges for
researchers in their bid to account for the effects of (1) biaxial interaction; and (2) incidence …

Fragility analysis of retrofitted multicolumn bridge bent subjected to near-fault and far-field ground motion

AHMM Billah, MS Alam, MAR Bhuiyan - Journal of Bridge …, 2013 - ascelibrary.org
This paper focuses on the fragility-based seismic vulnerability assessment of retrofitted
multicolumn bridge bents. Fragility curves are developed to assess the relative performance …

An energy‐frequency parameter for earthquake ground motion intensity measure

G Chen, J Yang, Y Liu, T Kitahara… - … Engineering & Structural …, 2023 - Wiley Online Library
A novel scalar ground motion intensity measure (IM), termed the energy‐frequency
parameter, is proposed based on the Hilbert‐Huang transform. To validate the effectiveness …

Seismic damage analysis due to near‐fault multipulse ground motion

G Chen, J Yang, R Wang, K Li, Y Liu… - … & Structural Dynamics, 2023 - Wiley Online Library
Near‐fault pulse‐like ground motion is a significant class of seismic records since it tends to
cause more severe damage to structures than ordinary ground motions. However, previous …

Seismic fragility assessment of concrete bridge pier reinforced with superelastic shape memory alloy

AHM Muntasir Billah, MS Alam - Earthquake Spectra, 2015 - journals.sagepub.com
In an attempt to reduce permanent displacement and damage, a hybrid reinforced concrete
(RC) bridge pier configuration is considered in the present study. The plastic hinge region of …

Cyclic tension–compression behavior of superelastic shape memory alloy bars with buckling-restrained devices

B Wang, S Zhu - Construction and Building Materials, 2018 - Elsevier
Shape memory alloys (SMAs) show great potential in seismic applications because of their
appealing superelastic feature and good energy dissipation capacity. The tensile behavior …