Calibration of stiffness parameters for Hardening Soil Model in residual soil from Kenny Hill Formation


Author : Darvintharen Govindasamy, Mohd Ashraf M. I., Mohd Faiz M. Z., Mohd Hazreek Z. A.Publication : Bulletin of the Geological Society of MalaysiaNo. : 67Page : 119-125Year : 2019DOI : DOI : https://doi.org/10.7186/bgsm67201915


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Bulletin of the Geological Society of Malaysia, Volume 67, June 2019, pp. 119 – 125

Calibration of stiffness parameters for Hardening Soil Model in residual soil from Kenny Hill Formation

Darvintharen Govindasamy1, Mohd Ashraf Mohamad Ismail1,*, Mohd Faiz Mohammad Zaki1,2, Mohd Hazreek Zainal Abidin3

1School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Penang, Malaysia
2School of Environmental Engineering, Universiti Malaysia Perlis, Perlis, Malaysia
3Faculty of Civil and Environmental Engineering (FKAAS), Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
*Corresponding author email address: ceashraf@usm.my

Abstract: The underground configuration of the Klang Valley Mass Rapid Transit (KVMRT) system passes through two
different geological formations namely the Kenny Hill Formation and Kuala Lumpur Limestone. However, this study
only concentrates on the Kenny Hill Formation. A set of borehole data from Pasar Seni Station within the Kenny Hill
Formation was analysed in order to calibrate the stiffness parameters for Hardening Soil Model of residual soil from the
Kenny Hill Formation. The in situ and laboratory tests were simulated using the PLAXIS 2D software. The parameters
were determined based on triaxial and pressuremeter tests. From the selected boreholes, the residual soil from Kenny
Hill Formation is categorized into five soil types - sand, sandy clay, gravel, silty sand and silty gravel. The triaxial test
was carried out for sand and sandy clay at depths of 0-4 m and 2.5-8 m under both drained and undrained conditions,
respectively. The pressuremeter test was conducted for gravel at 2.5-10 m depths, silty sand at 6-36 m depths and silty
gravel at 30-40 m depths. The outcome of this study is to produce a reliable set of data which will allow engineers to make
assumptions more effectively and to avoid the probability of project failure due to unreliable design input parameters. It
is found that the Hardening Soil Model is able to represent the real soil behaviour compared to Mohr Coulomb Model.
This is due to the stress-dependent stiffness feature in Hardening Soil Model. Hardening Soil Model features a total of
ten parameters and it is very renowned due to the stress-dependent stiffness attribute. The parameters of Hardening Soil
Model of the residual soil from Kenny Hill Formation was also calibrated and a database was established.

Keywords: Stiffness parameters, Hardening Soil Model, Kenny Hill Formation, pressuremeter test, triaxial test

DOI : https://doi.org/10.7186/bgsm67201915