Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ground Improvement by Using Floating Granular Piles: Experimental Studies and Numerical Investigations
Increased infrastructure expansion in urban and metropolitan areas has contributed in recent years to a significant rise in real estate prices and a lack of viable construction sites. In order to artificially enhance the soil properties at these sites, a relatively recent innovation has been the ground improvement of soft cohesive soils using granular piles, becoming common in the last forty years. This paper describes the findings on floating granular piles installed in soft clay from laboratory model studies and numerical analyses. By simulating the idea of unit cells, short-term and displacement-controlled laboratory model experiments were performed. The impacts on the performance of granular piles of multiple parameters such as area replacement ratio, spacing, diameter and length of piles have been investigated in detail. The qualitative and quantitative improvements in the ultimate bearing capacity of improved ground and failure mode observed have been discussed. It has been found that even for settlements up to 20 mm, the failure does not take place and load-settlement plots are almost linear. The bearing capacity factor increases with increments in the pile length and diameter. No significant bulging was noticed, and floating granular piles were found to penetrate into clay bed up to some depth.
Ground Improvement by Using Floating Granular Piles: Experimental Studies and Numerical Investigations
Increased infrastructure expansion in urban and metropolitan areas has contributed in recent years to a significant rise in real estate prices and a lack of viable construction sites. In order to artificially enhance the soil properties at these sites, a relatively recent innovation has been the ground improvement of soft cohesive soils using granular piles, becoming common in the last forty years. This paper describes the findings on floating granular piles installed in soft clay from laboratory model studies and numerical analyses. By simulating the idea of unit cells, short-term and displacement-controlled laboratory model experiments were performed. The impacts on the performance of granular piles of multiple parameters such as area replacement ratio, spacing, diameter and length of piles have been investigated in detail. The qualitative and quantitative improvements in the ultimate bearing capacity of improved ground and failure mode observed have been discussed. It has been found that even for settlements up to 20 mm, the failure does not take place and load-settlement plots are almost linear. The bearing capacity factor increases with increments in the pile length and diameter. No significant bulging was noticed, and floating granular piles were found to penetrate into clay bed up to some depth.
Ground Improvement by Using Floating Granular Piles: Experimental Studies and Numerical Investigations
Lecture Notes in Civil Engineering
Sitharam, T. G. (Herausgeber:in) / Kolathayar, Sreevalsa (Herausgeber:in) / Jakka, Ravi (Herausgeber:in) / Hasan, Murtaza (Autor:in) / Samadhiya, N. K. (Autor:in)
04.01.2022
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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