Journals / Düzce Üniversitesi Bilim ve Teknoloji Dergisi / 2022 / Cilt: 10 - Sayı: 2

A Parametric Study of Pile Behavior In Liquefied Soils

Sıvılaşan Zeminlerde Kazık Davranışına Dair Parametric Bir Çalışma

Pages
1024–1036
Publication Date
2022-10-12
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As the results of the pile-head displacement and maximum moment value output were assessed.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Liquefaction in saturated sandy soils under cyclical loads has a significant part in the structural damage cases.
📊
Key Findings & Data:The finite element program FLAC2D is utilized to understand the pile behavior in liquefied soils under dynamic loads.
💡
Conclusion & Impact:As the results of the pile-head displacement and maximum moment value output were assessed.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Sıvılaşma · Kabuk tabakası · FLAC2D

Abstract

Liquefaction in saturated sandy soils under cyclical loads has a significant part in the structural damage cases. Pile foundations, used for soils with bearing capacity problems, might get exposed to various liquefaction-based damages. The finite element program FLAC2D is utilized to understand the pile behavior in liquefied soils under dynamic loads. The 1999 Kocaleli earthquake record was used in the numerical analysis for a single pile element in the layered soil profile with liquefied and non-liquefied soil. The pile-head of the model used in the layered soil sample was left free for rotation. Calculations for a single pile profile where axial load and horizontal load are affected simultaneously were performed by considering both the kinematic and inertial effect. Finite difference analyzes were performed by changing the embedded lengths of pile socket according to the existence and absence of a non-liquefying crust layer on the liquefied soil in the layered soil profile. As the results of the pile-head displacement and maximum moment value output were assessed.

Özet

Tekrarlı yükler altında suya doygun kumlu zeminlerde meydana gelen sıvılaşma olayı yapısal hasarların meydana gelmesinde etkin rol oynamaktır. Taşıma gücü problemleri olan zeminler için kullanılan kazık temeller sıvılaşma olayından dolayı çeşitli hasarlara maruz kalabilirler. Bu çalışmada, dinamik yükler altında sıvılaşan zeminlerdeki kazık davranışı anlamak için sonlu farklar programı FLAC2D kullanılmıştır. Sıvılaşan ve sıvılaşmayan zeminin bulunduğu tabakalı zemin profilindeki tek bir kazık elemanı için yapılan numerik analizde 1999 Kocaleli deprem kaydı kullanılmıştır. Tabakalı zemin örneği içinde kullanılan kazık modelinin kazık başı dönmeye serbest hareketli olarak bırakılmıştır. Eksenel yük ve yatay yük aynı anda etkitilen tek kazık profili için hem kinematik etki hem de ataletsel etki göz önüne alınarak hesaplama yapılmıştır. Tabakalı zemin profilindeki sıvılaşan zemin üzerine sıvılaşmayan kabuk tabakası bulunması ve bulunmaması durumlarına göre kazık soketboyları değiştirilerek sonlu farklar analizleri gerçekleştirilmiş kazık başı deplasman değeri ve oluşan maksimum moment değeri sonuçları değerlendirilmiştir.

🔖

Cite This Article

KARDOĞAN, P. S. Ö., IŞIK, N. S. (2022). A Parametric Study of Pile Behavior In Liquefied Soils. Düzce Üniversitesi Bilim ve Teknoloji Dergisi, Cilt: 10 - Sayı: 2, 1024–1036. https://ajindex.com/articles/493863

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (12)

  1. K. Chatterjee, D. Choudhury, V. Dilli Rao, and H.G. Poulos, “Seismic response of single piles in liquefiable soil considering P‑delta effect,” Bulletin of Earthquake Engineering, 17, pp.2935–2961, 2019
  2. K. Tokimatsu and Y. Asaka, “ Effects of liquefaction-induced ground displacements on pile performance in the 1995 Hyogoken-Nambu earthquake,” Special Issue of Soil and Foundations, 38, pp.163-177, 1998
  3. G.R. Martin and C.Y. Chen, “Response of piles due to lateral slope movement,” Computers and Structures, 83(8-9), pp.588-598, 2005
  4. K. Horikoshi, A. Tateishi and H. Ohtsu, “ Detailed Investigation of Piles damaged by Hyogo-ken Nambu Earthquake,” 12th World Conference on Earthquake Enginnering, 2477, 2000
  5. W.D.L. Finn and N. Fujita, “ Piles in liquefiable soils: seismic analysis and design issues,” Soil Dyanamics and Earthquake Engineering, 22(9-12), pp.731-742, 2002
  6. B.K. Maheshwari, K.Z. Truman, M.H. El Naggar and P.L. Gould, “Three-dimensional nonlinear analysis for seismic soil-pile-structure interaction,” Soil Dynamics and Earthquake Engineering, 24(4), pp. 343–356, 2004
  7. K.Tokimatsu, H. Suzuki and M. Sato, “ Effects of inertial and kinematic interaction on seismic behavior of pile with embedded foundation,” Soil Dynamics and Earthquake Engineering, 25(7-10), pp.753-762, 2005
  8. N. Chenaf and J-L. Chazelas, “The Kinematic and Inertial Soil-Pile Interactions: Centrifuge Modelling” 3rd International Workshop of Young Doctors In Geomechanics, France, 65-68, November, 2008
  9. J. Chioua, W. Hung and Z. Young, “Combined dynamic structure-pile-soil interaction analysis considering inertial and kinematic effects,” Computers and Geotechnics, Volume 125, 103671, September, 2020, [10] A.S. Nikolaou, G. Mylonakis, G. Gazetas, T., Tazoh, “Kinematic pile bending during earthquakes analysis and field measurements,” Geotechnique, 51 (5), pp. 425-440, 2001
  10. K.T. Chau, C.Y. Shen and X. Guo, “Nonlinear seismic soil–pile–structure interactions: Shaking table tests and FEM analyses,” Soil Dynamics and Earthquake Engineering, 29, pp. 300-310, 2009
  11. M.N. Hussien, T. Tobita, S. Iai and M. Karray, “Soil-pile-structure kinematic and inertial interaction observed in geotechnical centrifuge experiments,” Soil Dynamics and Earthquake Engineering, 89, pp. 75-84, 2016
  12. M. Cubrinovski and K. Ishihara, “Simplified method for analysis of piles undergoing lateral spreading in liquefied soils,” Soils and Foundations, 44(5), pp.119-133, 2004. [1