Effects of Foundation Excavation on the Adjacent Structures and Potential Structural Damage


Güneş B., Samadi K., Sayın B.

28 th International Scientific Conference MECHANIKA 2024, Kaunas, Litvanya, 31 Mayıs 2024, ss.85-90, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Kaunas
  • Basıldığı Ülke: Litvanya
  • Sayfa Sayıları: ss.85-90
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

The study aimed to investigate whether the damages observed in a three-block school building with a sheared reinforced concrete (RC) frame system were related to the foundation excavation activities on the adjacent parcel. Based on the data obtained from the soil investigation report, a shoring system was designed and implemented for the safety of the excavation process. The conformity of the shoring project was verified through detailed calculations. Damage assessments were conducted based on on-site observational geotechnical and structural investigations and were categorized by damage on the retaining walls, non-structural/structural elements, and ground. In general, it was concluded that the horizontal displacements in Block B of the school building were caused by the rotation of the foundation during the excavation. However, since the amount of rotation in the foundation was limited and the building has a raft foundation, it was concluded that these displacements do not cause structural damage. The load-carrying capacity of the shoring system designed and implemented for the excavation was found to be adequate. However, despite the damages on the retaining walls were not structurally related to the adjacent foundation excavation, it was concluded that the current condition of the retaining walls could potentially endanger life safety.