SITE EFFECT ANALYSIS OF SHIRVAN GTL REFINERY, USING EQUIVALENT LINEAR SOIL BEHAVIOR (NE OF IRAN)
Site effect is one of the important factors which should be evaluated before constructing any important structure. Gas refinery is a sensitive structure that is should be studied seismicity and effect of soil characteristics on earthquake hazard increasing or decreasing in study region. In this study, site effects of the gas refinery site in Shirvan, NE of Iran, studied and evaluated by numerical method and soil equivalent linear behavior using EERA program. To obtain soil characteristics, 4 borholes excavated and soil mechanics tests done on the samples of these boreholes. Generally, ground type of the region in shallow depth is gravel (G) and in deep is clay (CL). S-wave velocity obtained by downhole test. By regarding to these primary information, ground surface response resulted in all boreholes and the results show by isoacceleration, isoamplification, isofrequency and isoperiod maps. Maximum acceleration in the ground surface, is 0.422 g in recurrent period 475y. Mean amplification factor in the region is 2.3. The region is amplified in mean frequency range 12-14 Hz, and period range 0.070-0.085 (s). Then, the result differentiated according to Iranian Code of Practice for Seismic Resistant Design of Buildings, Standard No. 2800. Finally, the results compared by ground type obtained according Standard 2800. By comparing, it is observed that surface acceleration, amplification factor, and amplification frequency and period are compatible with ground type of all sites according Standard 2800. Acceleration response and amplification spectra are compatible in all sites. Regarding to compatible results and ground characteristics in all boreholes and by regarding to the restricted study region then one can suppose the region is uniform with small variations.
Shirvan Site effect GTL refinery Amplification factor
Ahmad ADIB Naser EBADATI Kobra HEYDARZADEH
Islamic Azad University, South Tehran Branch, Iran Islamic Azad University, Islamshar Branch, Iran Zaminkav Research Group, Iran
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
435-442
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）