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Parametric analysis and optimization of T-shaped and conventional deep cement mixing column-supported embankments
Computers and Geotechnics ( IF 5.3 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.compgeo.2020.103555 Chana Phutthananon , Pornkasem Jongpradist , Pattaramon Jongpradist , Daniel Dias , Julien Baroth
Computers and Geotechnics ( IF 5.3 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.compgeo.2020.103555 Chana Phutthananon , Pornkasem Jongpradist , Pattaramon Jongpradist , Daniel Dias , Julien Baroth
Abstract The aim of this article was to optimize the shape and modulus of T-shaped deep cement mixing (TDM) and conventional deep cement mixing (DCM) columns for supporting embankment over soft soil. Objective of optimization is minimizing the column costs and differential settlement while maximizing the stress efficacy. A 2D axisymmetric numerical modelling was employed to investigate the behavior of TDM and DCM column-supported embankments. The influence of each parameter of the column-embankment system (CES) on differential settlement and stress efficacies is presented and discussed. The optimization approach using a genetic algorithm (GA) combined with a response surface method (RSM) was used to find an optimal solution. The numerical optimization results show that the use of optimal TDM column can provide lower differential settlement and higher stress efficacies compared to the conventional DCM column under the same or even lower column construction costs.
中文翻译:
T型与常规深层水泥搅拌柱支护路堤参数分析与优化
摘要 本文的目的是优化用于支撑软土路堤的 T 形深层水泥搅拌 (TDM) 和传统深层水泥搅拌 (DCM) 柱的形状和模量。优化的目标是最大限度地减少柱成本和差异沉降,同时最大限度地提高应力效率。采用二维轴对称数值建模来研究 TDM 和 DCM 柱支撑路堤的行为。介绍并讨论了柱式路堤系统 (CES) 的每个参数对差异沉降和应力效应的影响。使用遗传算法 (GA) 结合响应面法 (RSM) 的优化方法用于寻找最优解。
更新日期:2020-06-01
中文翻译:
T型与常规深层水泥搅拌柱支护路堤参数分析与优化
摘要 本文的目的是优化用于支撑软土路堤的 T 形深层水泥搅拌 (TDM) 和传统深层水泥搅拌 (DCM) 柱的形状和模量。优化的目标是最大限度地减少柱成本和差异沉降,同时最大限度地提高应力效率。采用二维轴对称数值建模来研究 TDM 和 DCM 柱支撑路堤的行为。介绍并讨论了柱式路堤系统 (CES) 的每个参数对差异沉降和应力效应的影响。使用遗传算法 (GA) 结合响应面法 (RSM) 的优化方法用于寻找最优解。