Seismic performance of earth dams founded on liquefiable soil layer subjected to near-fault pulse-like ground motions

2021 ◽  
Vol 143 ◽  
pp. 106623
Author(s):  
Qiang Wu ◽  
Dian-Qing Li ◽  
Yong Liu ◽  
Wenqi Du
Keyword(s):  
Seismic Performance ◽  
Ground Motions ◽  
Soil Layer ◽  
Earth Dams ◽  
Near Fault ◽  
Liquefiable Soil

Seismic performance evaluation of dam-reservoir-foundation systems to near-fault ground motions

2014 ◽  
Vol 72 (2) ◽  
pp. 651-674 ◽  
Author(s):  
Gaohui Wang ◽  
Sherong Zhang ◽  
Chao Wang ◽  
Mao Yu
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Ground Motions ◽  
Dam Reservoir ◽  
Seismic Performance Evaluation ◽  
Near Fault

Influence of Isolation Gap Size on the Collapse Performance of Seismically Base-Isolated Buildings

2013 ◽  
Vol 29 (4) ◽  
pp. 1477-1494 ◽  
Author(s):  
Zhe Qu ◽  
Shoichi Kishiki ◽  
Toshiyuki Nakazawa
Keyword(s):  
Seismic Performance ◽  
Potential Risk ◽  
Ground Motions ◽  
Retaining Walls ◽  
Incremental Dynamic Analysis ◽  
Far Field ◽  
Gap Size ◽  
Near Fault ◽  
Earthquake Ground Motions ◽  
Isolation Period

The pounding of retaining walls forms a potential risk of degrading the performance of seismically base-isolated buildings subjected to strong, especially near-fault, earthquake ground motions. Incremental dynamic analysis is employed to generate the so-called gap graph, in which two characteristic gap sizes of a base-isolated building are related with the isolation period of the building and the strengthof the superstructure. Thegapgraph canbe usedto evaluate the required gap size for a base-isolated building to have certain collapse performance. By means of gap graphs, the interdependent relations of gap size with other important factors that influence the seismic performance of the base-isolated building are examined. In particular, the results show that near-fault pulse-like ground motions are likely to impose much higher demand for the isolation gap than far-field ones.

Simulation of the seismic performance of the Bolu Viaduct subjected to near-fault ground motions

2004 ◽  
Vol 33 (13) ◽  
pp. 1249-1270 ◽  
Author(s):  
S. W. Park ◽  
H. Ghasemi ◽  
J. Shen ◽  
P. G. Somerville ◽  
W. P. Yen ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Ground Motions ◽  
Near Fault

DEVELOPMENT OF AN IMPROVED INTENSITY MEASURE IN ORDER TO REDUCE THE VARIABILITY IN SEISMIC DEMANDS UNDER NEAR-FAULT GROUND MOTIONS

2012 ◽  
Vol 06 (02) ◽  
pp. 1250012 ◽  
Author(s):  
A. YAHYAABADI ◽  
M. TEHRANIZADEH
Keyword(s):  
Seismic Performance ◽  
Ground Motions ◽  
Intensity Measure ◽  
Seismic Performance Assessment ◽  
Seismic Demands ◽  
Demand Prediction ◽  
Near Fault ◽  
Long Period ◽  
Short Period ◽  
Pseudo Spectral

Intensity measure (IM) which describes the strength of an earthquake record plays an important role in the seismic performance assessment of structures. An improved IM that can reduce the variability in seismic demands helps reducing the number of records necessary to predict the seismic performance with sufficient accuracy. In this study, an improved RMS-based IM is developed based on the results obtained from incremental dynamic analyses of short-to relatively long-period frames under an ensemble of near-fault pulse-like earthquake records. It is observed that the root-mean-square value of pseudo spectral accelerations, (Sa) rms , is generally superior to that of spectral velocities, (Sv) rms , in seismic demand prediction under near-fault records. To compute (Sa) rms as IM, two appropriate period ranges are suggested for short- and moderated-to relatively long-period frames, respectively. Comparing the efficiency of (Sa) rms with several advanced IMs shows that (Sa) rms is more efficient in predicting the inelastic response and collapse capacity of short-period frames. It is also found that intensity measure (Sa) rms is sufficient with respect to the magnitude and source-to-site distance for all frames of various heights under near-fault ground motions.

A new energy balance-based method for evaluating seismic performance of isolated bridges under near-fault ground motions

Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 3724-3737
Author(s):  
Zhongying He ◽  
Heng Yang ◽  
Jinyong Zhu ◽  
Yutao Pang
Keyword(s):  
Energy Balance ◽  
Seismic Performance ◽  
Ground Motions ◽  
Near Fault ◽  
New Energy ◽  
Isolated Bridges
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