ANALYSIS OF BORED PILE FOUNDATION IN POTENTIALLY LIQUEFIED SOIL (CASE STUDY: ANUTAPURA MEDICAL CENTER BUILDING)

D R Septiadi^[1],2*, H C Hardiyatmo¹ and F Faris¹

¹ Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia

² Directorate General of Human Settlement, Ministry of Public Works and Housing, Republic of Indonesia

[1]^* Corresponding author: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol4.art37

ABSTRACT

Pile foundations placed until hard soil layer and passed through a liquefied layer can be a mitigation effort against liquefaction hazards to buildings. Nevertheless, liquefaction can still impact the stability of the pile. The Anutapura Medical Center (AMC) building at the Anutapura General Hospital complex, Palu city, is a building that is planned to be built on potentially liquefied soil. The foundation of the building was planned to use bored pile foundations to mitigate the possibility of liquefaction. This study aims to analyze and compare the stability of the bored pile group foundation of the AMC building under non-liquefaction and liquefaction soil conditions. The study was conducted by manually calculating the bearing capacity of the bored pile based on soil data. Further analysis was carried out by modeling the pile foundation using Geo5 Pile Group to determine the deformation and internal forces acting on the pile group. The analysis was carried out in 2 cases, i.e., non-liquefaction and liquefaction conditions. The results show differences in the bearing capacity, deformation, and internal forces in non-liquefaction and liquefaction soil conditions. The study results are expected to be a reference and consideration in designing pile foundations in liquefaction-prone locations.

Keywords: Liquefaction, Pile foundation, Bearing capacity, Geo5 Pile Group.

REFERENCES

Stringer M E and Madabhushi S P G 2010 Effect of Liquefaction on Pile Shaft Friction Capacity International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics 16

Seed H B 1987 Design Problems in Soil Liquefaction Journal of Geotechnical Engineering 113 827–45

Towhata I 2008 Geotechnical Earthquake Engineering (Springer)

Hardiyatmo H C 2022 Rekayasa Gempa untuk Analisis Struktur & Geoteknik (Yogyakarta: Gadjah Mada University Press)

Marcuson, William F. I 1978 Definition of Terms Related to Liquefaction Journal of the Geotechnical Engineering Division 104 1197–200

Das B M and Ramana G V 2010 Principles of Soil Dynamics (Cengage Learning)

Bhattacharya S and Bolton M 2004 Pile Failure During Seismic Liquefaction: Theory and Practice Cyclic Behaviour of Soils and Liquefaction Phenomena: Proceedings of the International Conference (CRC Press) p 341

Ishihara K and Cubrinovski M 1998 Soil-pile interaction in liquefied deposits undergoing lateral spreading 11th Danube-European Conference on Soil Mechanics and Geotechnical Engineering

Finn W D L and Fujita N 2002 Piles in liquefiable soils: Seismic analysis and design issues Soil Dynamics and Earthquake Engineering 22 731–42

Brandenberg S J 2005 Behaviour of Pile Foundations on Liquefied and Laterally Spreading Ground Disertation (Davis: Universtity of California)

Brandenberg S J, Boulanger R W, Kutter B L and Chang D 2007 Static Pushover Analyses of Pile Groups in Liquefied and Laterally Spreading Ground in Centrifuge Tests Journal of Geotechnical and Geoenvironmental Engineering 133 1055–66

Ashford S A, Boulanger R W and Brandenberg S J 2011 Recommended Design Practice for Pile Foundations in Laterally Spreading Ground (Berkeley: Pacific Earthquake Engineering Research Center)

Badan Standarisasi Nasional 2017 SNI 8460:2017 Persyaratan perancangan geoteknik (Jakarta: BSN)

Manoppo F J, Warouw A G D, Talumepa J R and Manoppo C J 2019 Potential failure of Soekarno Bridge Foundation Cause of Liquefaction Lowland Technology International Journal 21 151–8

Kardogan P S O, Isik N S, Onur M I and Bhattacharya S 2019 A Study on the Laterally Loaded Pile Behaviour in Liquefied Soil Using P-Y Method IOP Conference Series: Materials Science and Engineering vol 471 (Institute of Physics Publishing)

Septiadi D R, Hardiyatmo H C and Faris F 2022 Study of soil liquefaction potential at Anutapura General Hospital, Palu City, Central Sulawesi Province 5th International Conference on Earthquake Engineering and Disaster Mitigation (5th ICEEDM)

Fine Civil Engineering Software 2017 Geo5 Pile Group

Reese L C and O’Neill M W 1989 New Design Method for Drilled Shafts from Common Soil and Rock Tests Foundation Engineering: Current Principles and Practices

Hardiyatmo H C 2020 Analisis dan Perancangan Fondasi II (Yogyakarta: Gadjah Mada University Press)

Loehr J E, Bowders J J, Ge L, Likos W J, Luna R, Maerz N, Rosenblad B L and Stephenson R W 2011 Engineering Policy Guidelines for Design of Drilled Shafts (Jefferson City: Missouri Department of Transportation)

Prakash Shamsher and Sharma H D 1990 Pile foundations in engineering practice (John Wiley and Sons)

Bowles J E 1997 Foundation Analysis and Design (Singapore: McGraw-Hill)