THE SUCCESS PRINCIPLE OF DYNAMIC COMPACTION METHOD IN LIQUIFACTION MITIGATION: CASE STUDY OF AIRPORT INFRASTRUCTURE CONSTRUCTION

• Main Author: Dwi Cahyani, Suci
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/71146
• Institution: Institut Teknologi Bandung

Coastal areas with the characteristics of loose and saturated fine sandy soil with high levels of seismicity have the potential for liquefaction. Preventive efforts to minimize the negative impact of damage to construction built due to liquefaction require proper soil improvement. In this thesis, the results of the liquefaction potential study due to the earthquake are presented in the form of a liquefaction potential index (LPI) map based on the formula proposed by Iwasaki et al (1978) in the airside area of the Airport Infrastructure Development Project. Evaluation of liquefaction potential based on Cone Penetration Test (CPT) data is calculated using the Robertson and Wride (1998) formula. Estimation of subsidence due to liquefaction was calculated using the method of Zhang et al. In this study, the presentation of the fundamental principles for successful implementation of the Dynamic Compaction method will be discussed in detail including evaluation of compaction energy, ponder shape selection, fall height, number of compaction phases, heave penetration test, trial test, vibration effect, implementation aspects, equipment selection and machinery, pretest and post test and includes the proposed acceptance criteria for the Dynamic Compaction method. The success of the Dynamic Compaction method as liquefaction mitigation is also confirmed through the posttest (CPT) data that has been carried out in this case study area.