Results 261 to 270 of about 3,570,160 (355)

Multi-pulse characteristics of near-fault ground motions

Soil Dynamics and Earthquake Engineering, 2020
Abstract Multi-pulse characteristics of near-fault ground motions, such as the number of inherent pulses, pulse periods, and amplitudes, have notable influences on the response of structures. To investigate these important parameters, an automatic detection procedure, which is conducted on the rough pulse signal that is extracted by the HHT method ...
Xiaoyu Chen, Dongsheng Wang
openaire   +2 more sources

Fragility analysis of a containment structure under far-fault and near-fault seismic sequences considering post-mainshock damage states

Engineering Structures, 2019
Due to the unique characteristics of near-fault ground motions with an intense pulse, near-fault seismic sequences have the potential to cause more severe damage to structures compared to far-fault seismic sequences.
Xu Bao
exaly   +2 more sources

Peak and residual responses of steel moment-resisting and braced frames under pulse-like near-fault earthquakes

Engineering Structures, 2018
This paper presents the behaviour of steel moment resisting and braced frames under pulse-like near-fault earthquakes. The key properties for characterizing near-fault ground motions with forward directivity and fling step effects are discussed, and the ...
Wei Wang, Shuling Hu, Canxing Qiu
exaly   +2 more sources

Stochastic model for simulation of near‐fault ground motions

Earthquake Engineering & Structural Dynamics, 2016
SummaryA parameterized stochastic model of near‐fault ground motion in two orthogonal horizontal directions is developed. The major characteristics of recorded near‐fault ground motions are represented. These include near‐fault effects of directivity and fling step; temporal and spectral non‐stationarity; intensity, duration, and frequency content ...
Mayssa Dabaghi, Armen Der Kiureghian
openaire   +2 more sources

Automated parameterization of velocity pulses in near‐fault ground motions

Earthquake Engineering & Structural Dynamics, 2023
Proper parameterization of near‐fault ground motions is of critical importance in earthquake engineering, and this process is traditionally performed by directly fitting an analytical pulse model to the original motion.
Zhiwang Chang, Haoran Wu, Katsuichiro Goda   +2 more
semanticscholar   +1 more source

Seismic performance of bridges with novel SMA cable‐restrained high damping rubber bearings against near‐fault ground motions

Earthquake engineering & structural dynamics (Print), 2021
This study presents a novel type of shape memory alloy (SMA) cable‐restrained high damping rubber (SMA‐HDR) bearing, which is particularly suited to near‐fault (NF) regions where the pulsing effect potentially exists in the ground motions.
Cheng Fang, D. Liang, Yue Zheng, S. Lu
semanticscholar   +1 more source

Risk-based design and optimization of shape memory alloy restrained sliding bearings for highway bridges under near-fault ground motions

, 2021
The Shape Memory Alloy (SMA)-restrained bearing consists of a typical sliding bearing and SMA wires. The SMA wires are adopted to limit the excessive displacement caused by near-fault ground motions, which can improve the re-centering capacity and energy
Y. Pang, Wei He, J. Zhong
semanticscholar   +1 more source

Seismic fragility and damage assessment of reinforced concrete bridge pier under long-duration, near-fault, and far-field ground motions

, 2021
Observations from recent earthquakes around the world have revealed the destructive nature of near-fault ground motions that cause significant damage to structures. On the other hand, the effect of long-duration motions on seismic demands has attracted a
B. Todorov, A. M. Billah
semanticscholar   +1 more source

Probabilistic Nonlinear Displacement Ratio Prediction of Self-centering Energy-absorbing Dual Rocking Core System under Near-fault Ground Motions Using Machine Learning

Journal of earthquake engineering, 2021
Near-fault pulse-like ground motions can lead to significant seismic demand on building structures due to velocity pulses. The self-centering energy-absorbing dual rocking core (SEDRC) system is a newly developed seismic resilient structural system. This
Shuling Hu, Wen Wang, M. Alam
semanticscholar   +1 more source

Quantitative identification of near-fault pulse-like ground motions based on variational mode decomposition technique

Soil Dynamics and Earthquake Engineering, 2021
Near-fault ground motions have distinctive features different from typical far-field ground motions. The approach detects near-fault pulse-like ground motion based on the variational mode decomposition (VMD) technique.
Jun Feng, Boming Zhao, Tianci Zhao
semanticscholar   +1 more source