نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد، دانشکده عمران، آب و محیط زیست، دانشگاه شهید بهشتی، تهران، ایران
2 دانشیار، دانشکده مهندسی عمران، آب و محیط زیست، دانشگاه شهید بهشتی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Earthquakes are the direct result of fault displacement and rupture, and the propagation of this rupture to the ground surface. Many destructive earthquakes occur along active faults. Therefore, studying and assessing fault setbacks (or fault-influenced zones) is a vital measure for mitigating earthquake-related natural disasters.
Considering that existing code guidelines and technical literature have not adequately addressed the simultaneous importance and influence of parameters affecting fault setbacks, nor have they paid sufficient attention to soil and fault characteristics, this research attempts to qualitatively evaluate the importance and relationship of geometric and geomechanical parameters influencing fault setbacks in both the hanging wall and footwall sections.
To assess the significance of these parameters, Morris's comprehensive sensitivity analysis and the Random Forest algorithm were employed. The results of this analysis indicate that soil layer height has the most significant importance and influence on displacements caused by fault movement, and this effect is greater in reverse faults than in normal faults. Furthermore, among the geomechanical parameters, elastic soil parameters are more important than plastic soil parameters within the fault setback zone.
Identifying these less significant parameters will significantly help reduce computational costs in future numerical studies. Additionally, the findings of this research pave the way for a quantitative investigation into the importance and interaction of highly significant parameters in future fault setback studies. This achievement will contribute to the development of more precise code guidelines for ensuring infrastructure safety.
کلیدواژهها [English]
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