STIFFNESS ANALYSIS OF SOLID PILE STRUCTURE TO DETERMINE BEARING CAPACITY WITH SEISMIC SHOCK TEST METHOD

• Main Author: Byan Vandyka, Glenn
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/68682
• Institution: Institut Teknologi Bandung

The strength of a building will never be separated from how the foundation attaches the building to the earth. The foundation is very crucial to the age of the building, so from here it is necessary to periodically inspect the foundation, especially inspections that are nondestructive with the term Non-destructive Testing (NDT). One technique of the NDT method is the Seismic Shock Test (SST), or also commonly called the Impulse Response method, which can determine the length and carrying capacity of a building when the top end of the pile foundation can be accessed. The SST method is carried out by hitting the foundation and recording seismic waves from the defects or the base of the foundation. SST utilizes the theory of wave propagation in the foundation with the help of an impulse hammer which will measure the force from the hammer hitting the pile. Then with the help of Fast Fourier Transform (FFT) can produce a frequency domain mobility plot which will be very useful for analyzing the length of the pile foundation and the bearing capacity of a pile. In this study, one of the piles in the Kataraja Toll Road construction project will be measured using the SST method. The purpose of the measurement is to get the value of the length of the pile that has been plugged into the ground using the average change in frequency parameter and also the stiffness or stiffness value of the pile. The pile length value is 19,217 meters and the stiffness value is 0,644 MN/m.