Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 32, No. 1 (January 2019) 46-53    Article in Press

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  STUDY ON THE CONTRAST BETWEEN TWO SEISMIC RESPONSE ANALYSIS PROGRAMS OF SOIL LAYER
 
X. Li
 
( Received: August 23, 2018 – Accepted in Revised Form: October 26, 2018 )
 
 

Abstract    56 ground motions of the bedrock and surface are selected from 28 stiff sites ( site class I and site classⅡ) of the KiK-net station.The peak acceleration, response spectra and shear strain of actual hard sites are calculated by using SHAKE2000 and LSSRLI-1. The similarities and differences between SHAKE2000 and LSSRLI-1 and their differences from measured records are analyzed. It provides a basis for improving the seismic response analysis method of soil layers. The results show that when the soil is not obviously nonlinear, most of the difference in PGA results calculated by SHAKE2000 and LSSRLI-1 can be ignored, and the maximum error of the calculated soil shear strain is also less than 20%. When the soil is highly nonlinear, only a few differences in PGA results can be ignored. The maximum error of shear strain of the soil is greater than 20%. The results of peak acceleration and response spectra calculated by SHAKE2000 and LSSRLI-1 differ greatly from the measured results in most cases. Nevertheless, the probability of having big difference and significant difference between LSSRLI-1 and measured response spectra is greater than SHAKE2000.

 

Keywords    Soil Analysis Program, Ground Motion, Soil Shear Strain, Response Spectra, Peak Acceleration

 

چکیده   

56 حرکت زمین از بستر سنگ و سطح از 28 محل سفت (سایت کلاس I و سایت کلاس II) از ایستگاه KiK-net انتخاب شده است. شتاب پیک شتاب، طیف پاسخ و فشار برشی از مکان های سخت واقعی با استفاده از SHAKE2000 و LSSRLI-1 محاسبه می شود. شباهت ها و تفاوت های بین SHAKE2000 و LSSRLI-1 و تفاوت های آنها از مستندات اندازه گیری شده مورد تجزیه و تحلیل قرار گرفته است. این مبنایی برای بهبود روش تجزیه و تحلیل پاسخ لرزه ای لایه های خاک است. نتایج نشان می دهد که وقتی خاک به طور آشکار غیر خطی نیست، بیشترین تفاوت در نتایج PGA محاسبه شده توسط SHAKE2000 و LSSRLI-1 می تواند نادیده گرفته شود و حداکثر خطا در محاسبه فشار برشی خاك نیز کمتر از 20٪ است. هنگامی که خاک بسیار غیر خطی است، تنها چند تفاوت در نتایج PGA می تواند نادیده گرفته شود. حداکثر خطای فشار برشی خاک بیش از 20٪ است. نتایج طیف های شتاب و واکنش محاسبه شده توسط SHAKE2000 و LSSRLI-1 از نتایج اندازه گیری در اکثر موارد بسیار متفاوت است. با این وجود احتمال تفاوت بزرگ و تفاوت معنی دار بین LSSRLI-1 و طیف پاسخ اندازه گیری بیشتر از SHAKE2000 است.

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