نتایج جستجو برای: peak ground acceleration (PGA)

تعداد نتایج: 324333  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی عمران 1387

هدف این پروژه تهیه شتاب طیفی مناطق نزدیک گسل و اثرات حوزه نزدیک می باشد. برای بدست آوردن شتاب طیفی مناطق مختلف ارائه روابط کاهندگی (attenuation relationshiups) مناسب برای ساختگاه های حوزه نزدیک (near-source) مورد نیاز است. در راستای این پژوهش تعداد 751 رکورد حوزه نزدیک با شرایط میدان آزاد (free-filed) از 57 رخداد حرکت نیرومند زمین انتخاب شده اند. رکوردهای انتخابی پردازش شده هستند که بر اساس حدا...

2013
Muhammad Waseem Muhammad Asif Khan Muhammad Waqas Javed Syed Mohammad Ali

Ground motion estimation for a site (34.01 o N, 71.45 o E) located in the Peshawar in terms of Peak Ground Acceleration (PGA) values is conducted. It is carried out with deterministic seismic hazard analysis approach using faults sources within a radius of one hundred kilometers around site. The results of this study indicate that the Main Boundary Thrust located at a distance of twenty nine (2...

2013
Sonia Thomas Kirat Pal

In this paper, the probable range of the horizontal component of peak ground acceleration (PGA) is predicted as a function of focal depth, earthquake magnitude and epicentral distance, using artificial neural network (ANN). Three different ANN architectures (namely Feed Forward, Back Propagation and Radial Bias Networks) are used to develop the model. The three models are then compared, to deci...

ژورنال: ژئوفیزیک ایران 2019

There are valuable investigations on the amplification effects of the topography on the seismic response in the frequency domain; however, a question is that how one can estimate the amplification of time domain peak ground acceleration (PGA), peak ground velocity (PGV), and peak ground displacement (PGD) over the topographic structures. In this study, the numerical approach has been used for t...

Journal: :International Journal of Geoinformatics 2021

This study was conducted to compare the performance of three different spatial analysis models: Inverse Distance Weighted (IDW), Ordinary Kriging,­­ and Regularized Spline interpolation technique determine best fit model representing Peak Ground Acceleration (PGA) in West Java Province, Indonesia. The models are commonly used visualization, but have calculation methods. calculations were perfor...

2009
Masumi Yamada Anna H. Olsen Thomas H. Heaton

This study collects recorded ground motions from the near-source region of large earthquakes and considers to what extent this historic record can inform expectations of future ground motions at similar sites. The distribution of observed peak ground acceleration (PGA) is well approximated by the lognormal distribution, and we expect the observed distribution to remain unchanged with the additi...

2011
Abha Mittal Shaifaly Sharma D. P. Kanungo

Peak ground acceleration (PGA) plays an important role in assessing effects of earthquakes on the built environment, persons, and the natural environment. It is a basic parameter of seismic wave motion based on which earthquake resistant building design and construction are made. The level of damage is, among other factors, directly proportional to the severity of the ground acceleration, and i...

Dong-Soo, Kim, Wook Choo, Yun, حسن بازیار, محمد, رابطی مقدم, مسعود,

In this paper,  a numerical model  was first verified against dynamic centrifuge tests results performed on an underground subway tunnel and then, the effect of underground structure on peak ground acceleration (PGA) at the ground surface investigated considering linear and nonlinear behavior for the soil. The results show that in the range of natural frequency of the system, nonli...

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