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أستغفر الله العظيم ,, اللهم لك الحمد

العودة   منتديات داماس > البوابه الهندسية > التطبيقات الهندسية

مواضيع مميزة  

آخر عشرة مواضيع المواضيع النشطة

19-12-2008, 06:30 AM
robert_sasmita غير متصل
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General Description

During past earthquakes, the ground motions on soft soil sites were found to be generally larger
than those of nearby rock outcrops, depending on local soil conditions (e.g., Seed and Idriss,
1968). These amplifications of soil site responses were simulated using several computer
programs that assume simplified soil deposit conditions such as horizontal soil layers of infinite
extent. One of the first computer programs developed for this purpose was SHAKE (Schnabel et
al., 1972). More than 25 years after its release, SHAKE is still commonly used and referenced
computer programs in geotechnical earthquake engineering. SHAKE computes the response in a
horizontally layered soil-rock system subjected to transient and vertical travelling shear waves.
SHAKE is based on the wave propagation solutions of Kanai (1951), Roesset and Whitman
(1969), and Tsai and Housner (1970). SHAKE assumes that the cyclic soil behavior can be
simulated using an equivalent linear model, which is extensively described in the geotechnical
earthquake engineering literature (e.g., Idriss and Seed, 1968; Seed and Idriss, 1970; and
Kramer, 1996). SHAKE was modified many times (e.g., frequency-dependent equivalent strain;
Sugito, 1995). SHAKE91 is one of the most recent versions of SHAKE (Idriss and Sun, 1992).
In 1998, the computer program EERA was developed in FORTRAN 90 starting from the same
basic concepts as SHAKE. EERA stands for Equivalent-linear Earthquake Response Analysis.
EERA is a modern implementation of the well-known concepts of equivalent linear earthquake
site response analysis. EERA's implementation takes full advantages of the dynamic array
dimensioning and matrix operations in FORTRAN 90. EERA's input and output are fully
integrated with the spreadsheet program Excel.
Following the introduction, the second section of this report reviews the theory of equivalent linear
soil model, and one-dimensional ground response analysis. The two appendices contain a
sample problem and comparison between EERA and SKAKE91 results.

Download Link :


20-12-2008, 08:39 PM
eng_ama2005 غير متصل
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thanks alot my dear friend robert

08-04-2009, 06:23 PM
alal_gr غير متصل
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the link is not working

09-04-2009, 06:23 AM
semo1 غير متصل
مشرف التطبيقات الهندسية
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thansks for the goooood post

the link is working 100%

try again alal_gr


كُلُّ مَنْ عَلَيْهَا فانٍ . وَيَبْقَى وَجْهُ رَبِّكَ ذُو الْجَلالِ وَالإكْرَامِ

09-04-2009, 06:44 PM
ALMF غير متصل
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The link does not work. I tried several times


من مواضيعي:
- CYPECAD 2009.1




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