SHEAR WAVE VELOCITY ANALYTIC OF 2-D MULTICHANNEL ANALYSIS OF SURFACE WAVE (MASW) TO INTERPRET SUBSURFACE FAULT OF ALTERNATIVE BRIDGE CONSTRUCTION IN KELOK SAGO JAMBI

• Main Author: FARRAS FARHAN (NIM : 10213102), MUHAMMAD
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29184
• Institution: Institut Teknologi Bandung

Geotechnics require geophysical methods for the classification of soil types. S wave velocity (Vs), wave velocity P (Vp), and density (&#961;), are the most important <br /> parameters in the classification of soil types. There are various methods to identify Vs, one of them is P-S logging method. However, this method is less suitable to be applied in urban areas due to the difficulties of data acquisition and expensive operational costs. In 1999, a seismic method that uses surface waves to interpret Vs profile with a higher signal to noise ratio was introduced by the name of <br /> Multichannel Analysis of Surface Waves (MASW). A surface wave, especially Rayleigh wave, has a way larger amplitude than a body wave. It causes the energy of surface wave to be the strongest one. Moreover, the surface wave propagates <br /> very slowly in the soil, so that, the S / N ratio is higher than other seismic methods. MASW 2-D method is used in this Final Project to determine subsoil properties and to identify the fault under the bridge abutments plan (abutment 1 and abutment 2) in Kelok Sago Jambi. The main advantage is the ability to recognize different types of seismic waves based on comprehensive wave propagation characteristics, so that, the obtained data can be used and analyzed as a whole group at once.