Soil response as an effect of various dynamic loading conditions at Klang Valley Area

Aniza Ibrahim; Aminaton Marto; Fakhrurazi Awang Kechik; Ali Selamat.

Dynamic loading due to earthquake, rail transit, or machine vibration is a serious concern as these loadings reduce soil shear strength which leads to catastrophic events such as soil instability, and seismic induced loading trigger soil liquefaction. At present, there is limited information regarding the response of dynamic loading towards residual soil in Malaysia. Therefore, initial study is vital to clarify residual soil in determining the response to cyclic loading and evaluate its behavior. The residual soil sample is sourced from a depth of 1 meter from the ground at selected location within the Universiti Pertahanan Nasional Malaysia (UPNM) campus area. Basic soil properties test was performed and cyclic triaxial test with varying loading intensities was carried out. Results show that the pore pressure increases as higher amplitude was imposed on the soil and vice versa. Lower amplitude provides stable pattern of hysteresis loops while it becomes unstable towards higher amplitude. Further research needs to be conducted to evaluate the correlation of subsoil characteristics for disaster management and prevention plan for any dynamic loading leads that to disaster. This research is aligned with the Sendai Framework for Disaster Risk Reduction (2015-2030) adopted by the United Nations that was designed as a protection from catastrophe risk.

KEYWORDS: Axial Stress; Cyclic loading; Deviator stress; Hysteresis loop; Residual Soil.



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