دانشگاه صنعتی امیرکبیر نشریه مهندسی عمران امیرکبیر 2588-297X 50 4 2018 10 23 Determining Impending Slip of Slop and Optimized Embankment Operation Volume of Earth Dams Using a Combination of Neural Networks and Genetic Algorithms (GA) تعیین آستانه لغزش پایداری شیروانی و بهینه یابی حجم عملیات خاکریزی سد خاکی همگن با استفاده از ترکیب شبکه عصبی و الگوریتم ژنتیک 747 754 1955 10.22060/ceej.2017.11051.4965 FA حمید رضا صبا دانشگاه تفرش، تفرش، ایران 0000-0001-9331-185X محسن کمالیان پژوهشکده مهندسی ژئوتکنیک، پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران، ایران ایمان رئیسی زاده موسسه آموزش عالی آفرینش بروجرد، بروجرد، ایران Journal Article 2015 10 21 In this study, impending slip of slope and optimized embankment operation volume of earth dams have been determined using optimization benefiting from a combination of neural networks and genetic algorithms (GA). Further, coefficient of slope stability of earth dam have been determined using neural network and has been compared with outputs of finite element software PLAXIS. In order to training the neural network from derivative data, 150 models of earth dams have been used in finite element software PLAXIS. <br />Slope stability analysis has been done in order to determining the safety factor at desired sliding surface and the most probable fracture process and the least related safety factor. The determination of the most probable fracture process at the impending slip (determining the least safety factor) is the genetic algorithm application. Moreover, another application of genetic algorithm in this research is optimizing the embankment operation volume of earth dam in the manner that minimum of safety factor derived. In this research analysis has been done in order to simpler use of proposed dimensions for engineers using various properties of soil in embankment of earth dam for different heights. Results have been shown as figures and tables which optimal dimensions and volume of the dam without using the software can be derived from them. <span lang="AR-SA" dir="RTL">استفاده</span><span lang="AR-SA"> <span dir="RTL">از</span> <span dir="RTL">بهینه‌سازی</span> <span dir="RTL">به</span> <span dir="RTL">کمک</span> <span dir="RTL">ترکیب</span> <span dir="RTL">شبکه</span> <span dir="RTL">عصبی</span> <span dir="RTL">و</span> <span dir="RTL">الگوریتم</span> <span dir="RTL">ژنتیک</span> </span><span lang="AR-SA" dir="RTL">( </span><span>GA<span lang="AR-SA" dir="RTL">)</span></span><span lang="AR-SA"> <span dir="RTL">برای</span> <span dir="RTL">تعیین</span> <span dir="RTL">دقیق</span> <span dir="RTL">آستانه</span> <span dir="RTL">لغزش</span> <span dir="RTL">پایداری شیروانی</span> <span dir="RTL">و</span> <span dir="RTL">حجم</span> <span dir="RTL">بهینه</span> <span dir="RTL">عملیات</span> <span dir="RTL">خاکریزی</span> <span dir="RTL">سدهای</span> <span dir="RTL">خاکی</span> <span dir="RTL">با</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">پارامترهای</span> <span dir="RTL">حاصله</span> <span dir="RTL">از</span> <span dir="RTL">نرمافزار</span> </span><span>PLAXIS </span><span lang="AR-SA" dir="RTL">شاکله‌ی</span><span lang="AR-SA"> <span dir="RTL">اصلی این</span> <span dir="RTL">مقاله</span> <span dir="RTL">را</span> <span dir="RTL">تشکیل</span> <span dir="RTL">می‌دهد</span></span><span>. <span lang="AR-SA" dir="RTL">در</span><span lang="AR-SA"> <span dir="RTL">این</span> <span dir="RTL">تحقیق</span> <span dir="RTL">ضریب</span> <span dir="RTL">پایداری</span> <span dir="RTL">شیروانی</span> <span dir="RTL">سد</span> <span dir="RTL">خاکی</span> <span dir="RTL">با</span> <span dir="RTL">شبکه</span> <span dir="RTL">عصبی</span> <span dir="RTL">تعیین</span> <span dir="RTL">و</span> <span dir="RTL">با</span> <span dir="RTL">خروجی‌های</span> <span dir="RTL">نرم افزار المان</span> <span dir="RTL">محدود</span> </span></span><span>PLAXIS </span><span lang="AR-SA" dir="RTL">مقایسه</span><span lang="AR-SA"> <span dir="RTL">شده</span> <span dir="RTL">است</span></span><span>. <span lang="AR-SA" dir="RTL">پارامترهای</span><span lang="AR-SA"> <span dir="RTL">مورد</span> <span dir="RTL">استفاده</span> <span dir="RTL">برای</span> <span dir="RTL">تعیین</span> <span dir="RTL">این</span> <span dir="RTL">ضریب</span> <span dir="RTL">اصمینان</span> <span dir="RTL">شامل</span> <span dir="RTL">ارتفاع</span> <span dir="RTL">سد( </span></span></span><span>H</span><span>(<span lang="AR-SA" dir="RTL">،</span><span lang="AR-SA"> <span dir="RTL">عرض</span> <span dir="RTL">تاج</span> <span dir="RTL">سد</span> </span>( </span><span>B</span><span>)<span lang="AR-SA" dir="RTL">،</span><span lang="AR-SA"> <span dir="RTL">شیب</span> <span dir="RTL">دامنه</span> <span dir="RTL">سد</span> </span>( </span><span>Ө</span><span>)<span lang="AR-SA" dir="RTL">،</span><span lang="AR-SA"> <span dir="RTL">زاویه</span> <span dir="RTL">اصطکاک</span> <span dir="RTL">داخلی</span></span>( </span><span>φ</span><span>)<span lang="AR-SA" dir="RTL">،</span><span lang="AR-SA"> <span dir="RTL">وزن</span> <span dir="RTL">مخصوص</span> <span dir="RTL">خاک</span></span>( </span><span>γ</span><span>)  <span dir="RTL"> <span lang="AR-SA">و</span></span><span lang="AR-SA"> <span dir="RTL">چسبندگی</span> <span dir="RTL">خاک</span> <span dir="RTL">(</span></span>c<span lang="AR-SA" dir="RTL">)می‌باشند</span>. <span lang="AR-SA" dir="RTL">با</span><span lang="AR-SA"> <span dir="RTL">مدل‌سازی</span> <span dir="RTL">شبکه</span> <span dir="RTL">عصبی</span> <span dir="RTL">و</span> <span dir="RTL">اعمال</span> <span dir="RTL">پارامترهای</span> <span dir="RTL">مذکور</span> <span dir="RTL">بعنوان</span> <span dir="RTL">ورودی،</span> <span dir="RTL">بهترین</span> <span dir="RTL">توابع</span> <span dir="RTL">در</span> <span dir="RTL">لایه‌های</span> <span dir="RTL">پنهان</span> <span dir="RTL">که</span> <span dir="RTL">کمترین خطا</span> <span dir="RTL">را</span> <span dir="RTL">در</span> <span dir="RTL">تعیین</span> <span dir="RTL">خروجی</span> <span dir="RTL">داشتند،</span> <span dir="RTL">تعیین</span> <span dir="RTL">گردید</span></span>. <span lang="AR-SA" dir="RTL">برای</span><span lang="AR-SA"> <span dir="RTL">آموزش</span> <span dir="RTL">و</span> <span dir="RTL">آزمون</span> <span dir="RTL">شبکه</span> <span dir="RTL">از</span> <span dir="RTL">اطلاعات</span> <span dir="RTL">بدست آمده</span> <span dir="RTL">از</span></span> 150 <span lang="AR-SA" dir="RTL">مدل</span><span lang="AR-SA"> <span dir="RTL">سد</span> <span dir="RTL">خاکی در</span> <span dir="RTL">نرمافزار</span> </span></span><span>PLAXIS </span><span lang="AR-SA" dir="RTL">استفاده</span><span lang="AR-SA"> <span dir="RTL">گردید</span></span><span>. <span lang="AR-SA" dir="RTL">تحلیل</span><span lang="AR-SA"> <span dir="RTL">پایداری</span> <span dir="RTL">شیروانی</span> <span dir="RTL">به</span> <span dir="RTL">منظور</span> <span dir="RTL">تعیین</span> <span dir="RTL">ضریب</span> <span dir="RTL">اطمینان</span> <span dir="RTL">در</span> <span dir="RTL">سطح</span> <span dir="RTL">لغزش</span> <span dir="RTL">مورد</span> <span dir="RTL">نظر</span> <span dir="RTL">و تعیین</span> <span dir="RTL">محتمل‌ترین</span> <span dir="RTL">فرایند</span> <span dir="RTL">گسیختگی</span> <span dir="RTL">و</span> <span dir="RTL">کمترین</span> <span dir="RTL">ضریب</span> <span dir="RTL">اطمینان</span> <span dir="RTL">مربوط</span> <span dir="RTL">به</span> <span dir="RTL">آن،</span> <span dir="RTL">انجام</span> <span dir="RTL">می‌گیرد،</span> <span dir="RTL">که</span> <span dir="RTL">کاربرد</span> <span dir="RTL">الگوریتم</span> <span dir="RTL">ژنتیک</span> <span dir="RTL">در این</span> <span dir="RTL">تحقیق،</span> <span dir="RTL">تعیین</span> <span dir="RTL">محتمل‌ترین</span> <span dir="RTL">فرایند</span> <span dir="RTL">گسیختگی</span> <span dir="RTL">آستانه</span> <span dir="RTL">لغزش</span></span> )<span lang="AR-SA" dir="RTL">تعیین</span><span lang="AR-SA"> <span dir="RTL">حداقل</span> <span dir="RTL">ضریب</span> <span dir="RTL">اطمینان</span></span>( <span lang="AR-SA" dir="RTL">می‌باشد</span>. <span lang="AR-SA" dir="RTL">همچنین،</span><span lang="AR-SA"> <span dir="RTL">یکی</span> <span dir="RTL">دیگر از</span> <span dir="RTL">کاربردهای</span> <span dir="RTL">الگوریتم</span> <span dir="RTL">ژنتیک</span> <span dir="RTL">در</span> <span dir="RTL">این</span> <span dir="RTL">تحقیق،</span> <span dir="RTL">بهینه</span> <span dir="RTL">کردن</span> <span dir="RTL">حجم</span> <span dir="RTL">عملیات</span> <span dir="RTL">خاکریزی</span> <span dir="RTL">سد</span> <span dir="RTL">می‌باشد</span> <span dir="RTL">به</span> <span dir="RTL">گونه‌ای</span> <span dir="RTL">که،</span> <span dir="RTL">حداقل</span> <span dir="RTL">ضریب اطمینان</span></span> )<span lang="AR-SA" dir="RTL">آستانه</span><span lang="AR-SA"> <span dir="RTL">لغزش</span></span>( <span dir="RTL"> <span lang="AR-SA">حاصل</span></span><span lang="AR-SA"> <span dir="RTL">شود</span></span>. <span lang="AR-SA" dir="RTL">در</span><span lang="AR-SA"> <span dir="RTL">این</span> <span dir="RTL">تحقیق،</span> <span dir="RTL">برای</span> <span dir="RTL">استفاده</span> <span dir="RTL">آسان‌تر</span> <span dir="RTL">مهندسان</span> <span dir="RTL">از</span> <span dir="RTL">ابعاد</span> <span dir="RTL">پیشنهادی،</span> <span dir="RTL">با</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">مشخصات مختلف</span> <span dir="RTL">خاک</span> <span dir="RTL">در</span> <span dir="RTL">خاکریز</span> <span dir="RTL">سد،</span> <span dir="RTL">برای</span> <span dir="RTL">ارتفاعهای</span> <span dir="RTL">متفاوت</span> <span dir="RTL">تحلیل</span> <span dir="RTL">صورت</span> <span dir="RTL">گرفت</span> <span dir="RTL">و</span> <span dir="RTL">نتایج</span> <span dir="RTL">به</span> <span dir="RTL">صورت</span> <span dir="RTL">نمودارها</span> <span dir="RTL">و</span> <span dir="RTL">جداول</span> <span dir="RTL">ارائه</span> <span dir="RTL">شده،</span> <span dir="RTL">که با</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">این</span> <span dir="RTL">نمودارها</span> <span dir="RTL">می‌توان</span> <span dir="RTL">ابعاد</span> <span dir="RTL">و</span> <span dir="RTL">حجم</span> <span dir="RTL">بهینه</span> <span dir="RTL">خاک</span> <span dir="RTL">را</span> <span dir="RTL">بدون</span> <span dir="RTL">مراجعه</span> <span dir="RTL">مستقیم</span> <span dir="RTL">به</span> <span dir="RTL">برنامه</span> <span dir="RTL">بدست</span> <span dir="RTL">آورد</span></span>.</span> https://ceej.aut.ac.ir/article_1955_378a063b8fdb1db941e34f4bde584c7d.pdf