Importance of quantification of local site effects based on wave propagation in seismic microzonation

2008 ◽  
Vol 117 (S2) ◽  
pp. 731-748 ◽  
Author(s):  
S. Kumar ◽  
J. P. Narayan
Keyword(s):  
Wave Propagation ◽  
Site Effects ◽  
Seismic Microzonation ◽  
Local Site Effects ◽  
Local Site

Overview of local site effects and seismic microzonation mapping in Metropolitan Vancouver, British Columbia, Canada

2020 ◽  
Vol 270 ◽  
pp. 105568 ◽  
Author(s):  
Sheri Molnar ◽  
Jamal Assaf ◽  
Aamna Sirohey ◽  
Sujan Raj Adhikari
Keyword(s):  
British Columbia ◽  
Site Effects ◽  
Seismic Microzonation ◽  
Local Site Effects ◽  
Local Site

scholarly journals An overview of seismic ground response methods over the world and their applications in Vietnam

2021 ◽  
Vol 43 (2) ◽  
pp. 131-151
Author(s):  
G.K. Trung ◽  
N.D. Vinh
Keyword(s):  
Wave Propagation ◽  
Urban Areas ◽  
Site Effects ◽  
Local Site Effects ◽  
Motion Data ◽  
Local Site ◽  
Wave Propagation Method ◽  
The World ◽  
The Impact ◽  
Dimensional Wave

The estimation of the impact of earthquakes on buildings and mega structures in large urban areas is of extremely importance. That is why it always gets attentions from construction planners and policy makers who are concerned about construction rules. When earthquake occurs, the vibration is transferred to sites. Although the vibration intensity is at first not too strong, the motion probably becomes stronger and lasts longer under special conditions of the local site. Two famous examples for these effects occurred in Mexico City in 1985 and in Taiwan in 1999. There are a number of approaches to this problem, such as evaluations based on seismic field observations, the microtremor method, the method using the weak motion data, the method using the strong motion data, the one-dimensional wave propagation method or the three dimensional wave propagation method with simulation etc. In this paper, we will give an overview and discuss about the advantages and the disadvantages of the methods that have been commonly applied in the world. We also present the application of these methods in studies carried out in Vietnam in general and in particular, in Hanoi city. We found that the studies for Hanoi city were mainly carried out in the western areas of Hanoi and a few positions in the urban districts. In addition, the authors only gave comments about and assessments of the shear wave velocity, and classified the ground type without a detailed map of local site effects for the entire area of Hanoi. In order to obtain a full site effects evaluation for Hanoi city, future studies should focus on the application of 1D analysis for the central area of Hanoi city and combining 1D analysis with 2D or 3D to give a better picture about the impact of local site effects. This hybrid approach is necessary in order to compare and verify the data obtained by the empirical and the analytical methods. On the other hand, many problems need to be addressed, for instance, the construction of a detailed 3D geological model for Hanoi, the calculation of the dominant periods and the amplification of the local soil conditions for the urban areas.

scholarly journals Preliminary Analysis for Evaluation of Local Site Effects from Strong Motion Spectra by an Inversion Method.

1992 ◽  
Vol 40 (1) ◽  
pp. 175-191 ◽  
Author(s):  
Kenichi Kato ◽  
Masayuki Takemura ◽  
Tomonori Ikeura ◽  
Kenji Urao ◽  
Tomiichi Uetake
Keyword(s):  
Preliminary Analysis ◽  
Site Effects ◽  
Strong Motion ◽  
Inversion Method ◽  
Local Site Effects ◽  
Local Site

Evaluation of Peak Ground Acceleration and Response Spectra Considering the Local Site Effects

2010 ◽  
Vol 1 (1) ◽  
pp. 25-41 ◽  
Author(s):  
T. G. Sitharam ◽  
K. S. Vipin
Keyword(s):  
Seismic Hazard ◽  
Peak Ground Acceleration ◽  
Site Effects ◽  
Response Spectra ◽  
Probabilistic Logic ◽  
Site Classification ◽  
Ground Acceleration ◽  
Entire Study ◽  
Local Site Effects ◽  
Local Site

The local site effects play an important role in the evaluation of seismic hazard. The proper evaluation of the local site effects will help in evaluating the amplification factors for different locations. This article deals with the evaluation of peak ground acceleration and response spectra based on the local site effects for the study area. The seismic hazard analysis was done based on a probabilistic logic tree approach and the peak horizontal acceleration (PHA) values at the bed rock level were evaluated. Different methods of site classification have been reviewed in the present work. The surface level peak ground acceleration (PGA) values were evaluated for the entire study area for four different site classes based on NEHRP site classification. The uniform hazard response spectrum (UHRS) has been developed for the city of Bangalore and the details are presented in this work.

Local site effects on a high-pier railway bridge under tridirectional spatial excitations: Nonstationary stochastic analysis

2013 ◽  
Vol 52 ◽  
pp. 55-69 ◽  
Author(s):  
Hong-Yu Jia ◽  
De-Yi Zhang ◽  
Shi-Xiong Zheng ◽  
Wei-Chau Xie ◽  
Mahesh D. Pandey
Keyword(s):  
Stochastic Analysis ◽  
Site Effects ◽  
Railway Bridge ◽  
Local Site Effects ◽  
Local Site ◽  
High Pier
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