Enine Zemin Hareketine Maruz Gömülü Boru Hatlarının Tepkisi İçin Örnek Bir Çalışma

Öz

Yaşam hatları olarak adlandırılan gömülü boru hatları, parçalı ve sürekli boru hatları olarak sınıflandırılmaktadır. Söz konusu bu altyapıların güvenliği insan hayatı için üst yapılar kadar önemlidir. Bu çalışmada, İstanbul ili Esenyurt ilçesi 2126. Sokak’ta meydana gelen düşey zemin deplasmanı nedeniyle bu bölgede gömülü olan parçalı ve sürekli boru hatları incelenmiştir. İnceleme alanında 20 cm zemin oturması tespit edilmiştir. Bu zemin oturmasına konu olan bölgede hem sürekli (24” çelik, Ø1400 çelik ve PE125 polietilen) hem de parçalı (Ø300 beton ve 100DF düktil) gömülü boru hatlarının davranışı enine kalıcı zemin deformasyonuna göre incelenmiş ve elde edilen sonuçlar irdelenmiştir. Yapılan analizler sonucunda bölgede mevcut olan boru hatlarının söz konusu zemin hareketine karşı güvenli olduğu ancak lokal burkulma incelemeleri sonucunda polietilen doğalgaz boru hattında (PE125) hasar oluşabileceği tespit edilmiştir.

Anahtar Kelimeler

• Gömülü boru hattı
• Enine zemin hareketi
• Hasar analizi
• Emniyet

A Sample Study for the Response of Buried Pipelines Subject to Transverse Ground Motion

Öz

Buried pipelines, called lifelines, are classified as segmented and continuous pipelines. The safety of these infrastructures is as vital as superstructures for human life. This study analyses the segmented and continuous pipelines buried in the 2126th street of the Esenyurt district of Istanbul in terms of vertical ground displacement. 20 cm ground settlement has been determined in the investigated area. The response of both the continuous (24” steel, Ø1400 steel and PE125 polyethylene) and the segmented (Ø300 concrete and 100DF ductile) buried pipelines in the region subject to this ground settlement has been investigated according to transverse permanent ground deformation and the obtained results have been examined. As a result of the analyzes, it has been determined that the pipelines in the region are safe against ground movement but that damage may ocur for the polyethylene natural gas pipeline (PE125) according to local buckling examinations.

Anahtar Kelimeler

• Buried pipeline
• Transverse ground movement
• Damage analysis
• Safety

Kaynakça

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