Analysis of Siirt Aktaş landslide finite element method and limit equilibrium method

Mehmet Hayrullah Akyıldız; Sema Nasıroğlu; Mehmet Salih Keskin

Article Details

Analysis of Siirt Aktaş landslide finite element method and limit equilibrium method

Authors:

Mehmet Hayrullah Akyıldız | Sema Nasıroğlu | Mehmet Salih Keskin

Publisher:

Dicle University

Main Topics:

İnşaat Geoteknik Mühendisliği | İnşaat Mühendisliğinde Zemin Mekaniği

Journal:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.15 Issue 3, pp.689-699

Document Type:

Article

Publication Date:

9/2024

Document Language:

Turkish

Document ID (Org No.):

2001328168

pISSN:

1309-8640

Keywords:

Abstract:

 In this study, during the highway construction works in Aktaş Village of Siirt Province, the construction works of which are carried out by the 9th Regional Directorate of Highways, the stability problems occurring in the embankment section were analyzed by limit balance and finite element methods, and the safety numbers and collapse surfaces were determined. High cut and fill sections are encountered in the study area, therefore this section is of critical importance. In the light of field investigations, laboratory and literature data, the necessary shear strength parameters for analyzes were obtained. In stability problems, it is difficult to determine the location and shape of the sliding surface. On the model reflecting the current situation, collapse surfaces were tried to be detected and safety analysis calculations were made with Plaxis 2D V20, which is based on the finite element method, and Slide V6.0, which is based on the limit equilibrium method. Although the two methods seem compatible in terms of safety numbers, the safety numbers obtained with the finite element method are lower. In addition, it has been determined that the finite element method gives more positive and reliable results in terms of determining the locations of failure zones in the soil and obtaining stress deformation curves.

 In this study, during the highway construction works in Aktaş Village of Siirt Province, the construction works of which are carried out by the 9th Regional Directorate of Highways, the stability problems occurring in the embankment section were analyzed by limit balance and finite element methods, and the safety numbers and collapse surfaces were determined. High cut and fill sections are encountered in the study area, therefore this section is of critical importance. In the light of field investigations, laboratory and literature data, the necessary shear strength parameters for analyzes were obtained. In stability problems, it is difficult to determine the location and shape of the sliding surface. On the model reflecting the current situation, collapse surfaces were tried to be detected and safety analysis calculations were made with Plaxis 2D V20, which is based on the finite element method, and Slide V6.0, which is based on the limit equilibrium method. Although the two methods seem compatible in terms of safety numbers, the safety numbers obtained with the finite element method are lower. In addition, it has been determined that the finite element method gives more positive and reliable results in terms of determining the locations of failure zones in the soil and obtaining stress deformation curves.

 In this study, during the highway construction works in Aktaş Village of Siirt Province, the construction works of which are carried out by the 9th Regional Directorate of Highways, the stability problems occurring in the embankment section were analyzed by limit balance and finite element methods, and the safety numbers and collapse surfaces were determined. High cut and fill sections are encountered in the study area, therefore this section is of critical importance. In the light of field investigations, laboratory and literature data, the necessary shear strength parameters for analyzes were obtained. In stability problems, it is difficult to determine the location and shape of the sliding surface. On the model reflecting the current situation, collapse surfaces were tried to be detected and safety analysis calculations were made with Plaxis 2D V20, which is based on the finite element method, and Slide V6.0, which is based on the limit equilibrium method. Although the two methods seem compatible in terms of safety numbers, the safety numbers obtained with the finite element method are lower. In addition, it has been determined that the finite element method gives more positive and reliable results in terms of determining the locations of failure zones in the soil and obtaining stress deformation curves.

 Bu çalışma ile, yapım çalışmaları Karayolları 9. Bölge Müdürlüğü tarafından yürütülen Siirt İline bağlı Aktaş Köyü mevkiinde karayolu inşaası çalışmaları sırasında, dolgu kesiminde meydana gelen stabilite problemlerinin limit denge ve sonlu elemanlar yöntemi ile statik ve depremli durum analizlerinin yapılarak güvenlik sayıları ve göçme yüzeyleri bakımından kıyası yapılmıştır. Çalışma alanında yüksek yarma ve dolgu kesitlerine rastlanmaktadır, bu sebeple bu kesim kritik bir öneme sahiptir. Heyelanın meydana geldiği kesimlerde gerekli arazi çalışmaları yapılmış ve elde edilen zemin ve kaya numuneleri ile laboratuvar deneyleri yapılmıştır. Arazi incelemeleri, laboratuvar ve literatür verileri ışığında analizler için gerekli kayma mukavemeti parametreleri elde edilmiştir. Stabilite problemlerinde kayma yüzeyinin yerini ve şeklini belirlemek zordur. Mevcut durumu yansıtan model üzerinde, sonlu eleman yönteminin yansıtıldığı Plaxis 2D V ile limit denge yöntemine dayanan Slide V.6 yazılımlarından yararlanılmış, şevin göçme yüzeyi tespit edilmeye çalışılmış ve güvenlik analizi hesapları yapılmıştır. Güvenlik sayıları yönünden iki yöntem uyumlu görünse de sonlu elemanlar yöntemi ile elde edilen güvenlik sayıları daha düşük çıkmıştır. Ayrıca zemindeki yenilme bölgelerinin yerlerinin belirlenmesi ve gerilme deformasyon eğrilerinin elde edilmesi açısından sonlu elemanlar yönteminin daha olumlu ve güvenilir sonuçlar verdiği tespit edilmiştir.

Article Details

Analysis of Siirt Aktaş landslide finite element method and limit equilibrium method

Authors:

Mehmet Hayrullah Akyıldız | Sema Nasıroğlu | Mehmet Salih Keskin

Publisher:

Dicle University

Main Topics:

İnşaat Geoteknik Mühendisliği | İnşaat Mühendisliğinde Zemin Mekaniği

Journal:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.15 Issue 3, pp.689-699

Document Type:

Article

Publication Date:

9/2024

Document Language:

Turkish

Document ID (Org No.):

2001328168

pISSN:

1309-8640

Slope stabilitiy

finite element method

limit equilibrium method

landslideŞev stabilitesi

sonu elemanlar yöntemi

limit denge yöntemi

heyelan

Issues

Article Details

Authors: Mehmet Hayrullah Akyıldız | Sema Nasıroğlu | Mehmet Salih Keskin

Publisher: Dicle University

Main Topics: İnşaat Geoteknik Mühendisliği | İnşaat Mühendisliğinde Zemin Mekaniği

Journal: Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.15 Issue 3, pp.689-699

Document Type: Article

Publication Date: 9/2024

Document Language: Turkish

Document ID (Org No.): 2001328168

pISSN: 1309-8640

Issues

Authors:

Mehmet Hayrullah Akyıldız | Sema Nasıroğlu | Mehmet Salih Keskin

Publisher:

Dicle University

Main Topics:

İnşaat Geoteknik Mühendisliği | İnşaat Mühendisliğinde Zemin Mekaniği

Journal:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.15 Issue 3, pp.689-699

Document Type:

Article

Publication Date:

9/2024

Document Language:

Turkish

Document ID (Org No.):

2001328168

pISSN:

1309-8640