Geotechnical Investigation Using Surface Waves Method: A Case Study of Sabet Bridge, Lamno, Aceh Province, Indonesia

2nd Southeast Asian Conference on Geophysics

Jamaluddin, Khaizal^1^2 ; Nawawi, Mohd^3 ; Rusydy, Ibnu^4 ; Irwandi, Irwandi^2 ; Chairullah, Banta^1

Department of Civil Engineering, Universitas Syiah Kuala, Banda Aceh

23111, Indonesia^1

Department of Geophysical Engineering, Universitas Syiah Kuala, Banda Aceh

23111, Indonesia^2

School of Physics, Universiti Sains Malaysia, Minden-Penang

11800, Malaysia^3

Department of Geological Engineering, Universitas Syiah Kuala, Banda Aceh

23111, Indonesia^4

关键词: Bridge foundation;    Cone penetration tests;    Drilling time;    Geotechnical investigations;    Investigation methods;    Mountainous area;    Seismic lines;    Seismic surface wave;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/318/1/012004/pdf
DOI  :  10.1088/1755-1315/318/1/012004

来源: IOP

【 摘 要 】

Sabet bridge is a connecting bridge between Lamno town and Jantho town in Aceh Province. The bridge is located in a mountainous area and geologically near to a karst formation. The surface is covered by a fluvial landscape which was deposited by coarse sand, gravels, pebbles, and boulders. The bridge foundation analysis consists of four points cone penetration test which capable to penetrate up to 2 meters. One borehole has an obstacle in penetrating due to gravel, pebble and boulder layers; which consume more drilling time and expensive. To solve this problem, a seismic surface waves method has been performed. Two seismic lines run above the planned site of bridge abutment. The investigation reveal the results, that the surface waves method can penetrate into subsurface more than 30 meters in depth; in which the requirement depth only 30 meters. The results from surface waves method reveal the suitability and high similarity with cone penetration test and borehole investigation methods.