Beton Kolon ve Darbeli Kırmataş Kolon (DKK) İmalatları Sonrası Zemindeki Sıkılaşmanın CPT Verileri İle Değerlendirilmesi

Download
2019-11-15
Çetin, Kemal Önder
Kurt Bal, Ece
Öner, Lale
Arda, Serhan
Within the scope of this manuscript, the mitigation performance of a composite ground improvement solution, which is composed of 18 m long 40 cm diameter GeoConcrete® Column (GCC) and 50 cm diameter Impact® Rammed Aggregate Pier® (RAP) along with 40 m long 80 cm diameter piles is assessed by pre- and post- cone penetration testing (CPT). These elements are designed for controlling excessive total and differential settlements, and liquefaction triggering at a paper mill site. As a mitigation solution, 18 m and 40 m long elements are designed to be constructed in the soft to medium stiff silty clay with scattered silt and sand interlayers. Improvement goals from GCC and Impact® RAP elements are partially tested by pre- and post- CPT data, and are listed as: i) densification of cohesionless silt and sand layers, ii) shear stress transfer to rigid columns during cyclic (seismic) loading, reducing seismic demand from foundation soils iii) increased horizontal stresses, leading to increased soil (and column) stiffness and strength, iv) vertical drainage through aggregate columns to dissipate cyclically –induced excess pore water pressures. The results show that due to ramming and vibration induced-densification, cone tip resistances have increased by a factor of 1.3-1.6 in cohesionless layers.
Citation Formats
K. Ö. Çetin, E. Kurt Bal, L. Öner, and S. Arda, “Beton Kolon ve Darbeli Kırmataş Kolon (DKK) İmalatları Sonrası Zemindeki Sıkılaşmanın CPT Verileri İle Değerlendirilmesi,” 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/88363.