3D-printed geocells in footing systems: a comprehensive physical and numerical studies on scaling and performance under centric and eccentric loading scenarios
      
Yazarlar (3)
Sarper Demirdöğen
Gazi Üniversitesi, Türkiye
Ayhan Gürbüz Gazi Üniversitesi, Türkiye
Dr. Öğr. Üyesi Kaan YÜNKÜL Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Transportation Geotechnics (Q1)
Dergi ISSN 2214-3912 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili Türkçe Basım Tarihi 03-2024
Cilt / Sayı / Sayfa 45 / 1 / – DOI 10.1016/j.trgeo.2024.101214
Makale Linki http://dx.doi.org/10.1016/j.trgeo.2024.101214
Özet
The complexities of scaling have long presented challenges in applying small-scale test results of geocell-reinforced footings to field conditions in geosynthetic engineering. There has been no research that thoroughly examines the scaling of both geometry and material stiffness in geocell-reinforced footing systems although limited studies have attempted to scale geocells using alternative materials with lower strength, such as simile paper, non-woven geotextile etc. Therefore, this is a leading study to address the complexities of scaling using 3D-printing technology, where both geometry and tensile stiffness of geocell were accurately scaled using scaling laws. In the present study, the impact of scaling on the performance of strip footings reinforced with both traditional fabricated and 3D-printed geocells in terms of pressure-settlement response and improvement factors were assessed. The results indicated that 3D-printed geocells offered significant advantages in customization and rapid prototyping of field scale. Specifically, the strip footings reinforced with fabricated geocells showed up to 65% higher improvement factors in both loose and dense soils compared to those using the scaled 3D-printed geocells. Furthermore, the footings reinforced with scaled geocells using 3D-printing technologies closely aligned with existing large-scale test results regarding improvement factors, which were further validated through various numerical analyses. These findings offer new perspectives for optimizing and applying 3D-printed geocells in geotechnical engineering and address the longstanding challenge of scaling geocell-reinforcement systems in small-scale model tests.
Anahtar Kelimeler
3D-printed geocells | Centric and eccentric loading | Geocell-reinforced footings | PLAXIS 3D | Scale effect | Strip footings