Muhammad Hamzah Fansuri, - and Hsu-Jen Lin, - and Muhsiung Chang, - and Togani Cahyadi Upomo, - and Rini Kusumawardani, FT Teknik Sipil and Rina Rebut Rayhansah, - (2022) The Use of Stone Column as a Countermeasure for Liquefiable Ground. In: The 6th Asia Future Conference (AFC6), August 27- 29 2022.

	PDF - Published Version Download (1MB)
	PDF - Published Version Download (1MB)

Abstract

Soil liquefaction and associated ground failures are one of the most destructive natural hazards that cause damages to engineering structures during the earthquake. This paper presents an alternative to mitigate the risk of liquefaction and associated ground deformation by stone column (SC). In this study, a three-dimensional finite-element (FE) simulation using OpenSeesPL is performed to address this issue. The development of model for mitigation in liquefiable ground follows physics (mechanics) of the problem closely possible and allows for more realistic representations of the involved static and dynamic responses. The software is capable of modeling the coupling responses between soil skeleton and pore fluid as well as redistributions of pore pressure during excitation either in two or three dimensions. The prevention of excess pore pressure generation and reduction of liquefaction-induced deformation would generally mitigate the consequence of liquefaction. The results show that the SC mitigation is found to be effective in reducing in sand stratum lateral deformation. In other words, the results indicate that there is an interaction among deformation and excess pore pressure related to soil type for mitigation. For this purpose, a systematic parametric study is conducted to investigate the effectiveness of the SC approach on the basis of couple SC permeability and ground inclination. Special emphasis is given to the computed results of soil response shaking, excess pore pressure, and lateral displace�ment of deposit. The numerical simulations provide a framework for the analysis of factors affecting liquefia�ble ground and insights for the improvement by the SC mitigation measure.

Actions (login required)

View Item