The Foundations of Palangpang Bridge in the Area Potential to Liquefaction throughout the Cimandiri Fault

DOI

10.2991/aer.k.201221.064How to use a DOI?

Keywords

Liquefaction, Cimandiri fault, deep foundation, CPT, CSR, CRR

Abstract

Liquefaction is a phenomenon that occurred when soil loses its shear strength due to an earthquake. In general, liquefaction happens during a large magnitude earthquake on soil with loose to very loose sand consistency and high ground water level. Palangpang Bridge is in Ciwaru area, Sukabumi Regency, West Java Province, Indonesia and is located over the Cimandiri fault. Seismicity history showed that Palangpang Bridge have experienced up to 25 earthquakes in the last 50 years. In this paper, liquefaction potential analysis on the bridge foundation will be conducted with qualitative and quantitative methods. Based on the cone penetration test (CPT) results, in the area of Palangpang Bridge, the soil layers that supported the bridge is alluvium soil with beach sand sediments and the ground water level is 2.5-3.0 meter below ground surface. The results of liquefaction potential analysis showed that liquefaction occurred in the soil layers at the depth of 9 meter below surface, thus the foundation of Palangpang Bridge needs to be reinforced. The reinforcement design is to add 8 piles to the existing pile configuration for each footing so that the bridge can operate safely.

Copyright

© 2020, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - A K Somantri
AU  - Iskandar
AU  - A Febriansya
AU  - B A Daffa
AU  - R I Hermawan
PY  - 2020
DA  - 2020/12/22
TI  - The Foundations of Palangpang Bridge in the Area Potential to Liquefaction throughout the Cimandiri Fault
BT  - Proceedings of the International Seminar of Science and Applied Technology (ISSAT 2020)
PB  - Atlantis Press
SP  - 388
EP  - 393
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201221.064
DO  - 10.2991/aer.k.201221.064
ID  - Somantri2020
ER  -