#TITLE_ALTERNATIVE#

• Main Author: (NIM : 250 07 032); Pembimbing I : Endra Susila, Ph.D; Pembimbing II : Erza Rismantojo,, SUHERMANTO
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/17322
• Institution: Institut Teknologi Bandung

Piling foundation into ground produces vibrations and uplift, therefore it can potentially disturb and/or cause damage to sensitive structures as well as to humans surrounding. Analyses of wave propagation for predicting the peak particle velocity (ppv) and uplift due to the piling is therefore critical to predict the effect of pililng during pile driving. A great number of analytical and numerical methods for predicting the amount of wave propagation velocity represented by ppv and the uplift have <br /> <br /> <br /> currently been available. Generally, most of the available methods are too simple, just require distance and type of soils, next ppv can be calculated. Their accuracy is therefore questioned. The other approachs which have to model dynamically pile driving are too difficult as they require repeated calculations with a long mathematical equations. This study presents the results of experimental and numerical studies to estimate the ppv and uplift caused by pile driving. Numerical analysis was performed by utilizing the dynamic finite element method using a professional software, called Plaxis Dynamic ver. 8.2. Numerical analyses model pile driving through various soil types, soil damping, energy applied to the top pile during <br /> <br /> <br /> driving, amplitude and frequency during erection. The outputs of numerical alanlysis are consisted of the ppv and uplift in both x and y coordinates. For verification, a field test has also been performed by collaborating with PT Kaltim Prima Coal in their piling project. Instrumentations have been installed on surrounding soils to record acceleration and uplift. Results of both instrumentation and numerical analysis shows that ppv depends on distance and soil rigidity. The closer the object to pile tip, the larger the ppv that will be produced. The more rigid the soils at the pile tipe, the larger the ppv, too. The results also show that both field test and numerical analysis results are close. Finally, a new method to predict ppv and uplift is proposed in this dissertation. Inputs of the new proposed method are type of foundation, diameter of pile, soil types and consistencies, and pile embedments.