Seismic Liquefaction Hazard and Site Response for Design of Piles in Mumbai City

Choudhury, Deepankar; Phanikanth, V. S.; Mhaske, Sumedh; Phule, Reshma R.; Chatterjee, Kaustav

doi:10.1007/s40098-014-0108-4

Cited by 34 publications

(5 citation statements)

References 27 publications

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“…Defleksi semakin besar ketika friksi antara tiang dan tanah tidak bekerja dengan baik, sehingga mengakibatkan deformasi yang besar pada tiang ketika menerima beban lateral. Likuifaksi lapisan tanah pada bagian atas tiang akan memberikan dampak signifikan terhadap deformasi tiang, terutama defkleksi dan momen pada tiang akan semakin besar karena friksi pada ujung dianggap tidak berfungsi maksimal (Choudhury dkk., 2015).…”

Section: Pengaruh Lapisan Tanah Terlikuifaksi Terhadap Tiangunclassified

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Studi Perilaku Tiang Group Pada Lapisan Tanah Terlikuifaksi

Situmorang,

Kustirini,

Purwanti

2024

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Likuifaksi merupakan satu fenomena yang terjadi pada lapisan tanah akibat gempa bumi. Pada saat terjadi likuifaksi tanah mengalami peningkatan tekanan air pori yang menyebabkan tanah kehilangan kuat geser sehingga mengalami penurunan tegangan efektif dan secara linier mengakibatkan penurunan kuat geser. Penelitian ini dibuat untuk mengetahui perubahan perilaku tiang akibat lapisan tanah terlikuifaksi disepanjang tiang. Semua analisa perubahan perilaku tiang dibandingkan dengan kondisi atau kondisi tidak ada lapisan terlikuifaksi, sehingga dapat diketahui perubahan perilaku tiang ketika ada lapisan teriluifaksi. Dari hasil analisa defleksi diketahui bahwa terjadi perubahan defleksi yang besar jika dibandingkan antara lapisan tidak terlikuifaksi dengan lapisan terlikuifaksi, yaitu dari 0,16 mm menjadi 4,32 mm atau meningkat sebesar 4.16 mm. Perubahan momen untuk lapisan tidak terlikuifaksi 23 kN menjadi 219 kN untuk kondisi lapisan terlikuifaksi atau meningkat sebesar 196 kN.m, hal yg sama pada perubahan daya dukung yang mengalami penurunan ketika terjadi likuifaksi, sehingga disimpulkan bahwa ada perubahan perilaku tiang jika terdapat lapisan terlikuifaksi.

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Section: Pengaruh Lapisan Tanah Terlikuifaksi Terhadap Tiangunclassified

“…Peningkatan momen pada tiang sejalan dengan penelitian (Basavana Gowda dkk., 2021) dan (Choudhury dkk., 2015), yang menyatakan bahwa perubahan momen suatu tiang pondasi sangat dipengaruhi lapisan tanah yang terlikuifaksi, semakin tebal lapisan yang mengalami potensi likuifaksi akan semakin besar momen yang terjadi.…”

Section: Momenunclassified

Studi Perilaku Tiang Group Pada Lapisan Tanah Terlikuifaksi

Situmorang,

Kustirini,

Purwanti

2024

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“…It has been noticed that areas are prone to liquefaction at moderate earthquake of magnitude 6.0 and above. [14] Used computer simulations to understand how piles react during earthquakes in soft ground, highlighting the importance of considering various factors in pile design. [15] clay deposit when reinforced with OBD stone column influences its bearing capacity.…”

Section: Introductionmentioning

confidence: 99%

Soil Liquefaction and Its Impact on Pile Foundations

2023

IRJMETS

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This study examines the impact of soil liquefaction on buildings supported by piles driven into the ground, focusing on the structural response and potential consequences when the ground temporarily loses its strength and becomes unstable during seismic loading, such as earthquakes. To enhance safety and mitigate the risks associated with soil liquefaction, proactive measures are being considered, such as conducting thorough ground investigations before construction, implementing ground improvement techniques, and employing meticulous engineering and design practices when planning buildings supported by piles in regions prone to ground weakness during seismic events. This research is essential for advancing our comprehension of the impact of soil liquefaction on pile-supported buildings and for developing strategies to enhance structural stability in regions prone to liquefaction, providing valuable insights for engineers and builders committed to creating earthquake-resistant structures and ensuring the safety of communities in seismic-prone areas.

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“…Dynamic studies of pile foundations by centrifuge tests were conducted by Abdoun et al (2003) and Knappett and Madabhushi (2012), while Boominathan and Ayothiraman (2005) analyzed the response of piles subjected to lateral loads in clay subjected to steady state harmonic vibrations only. The analysis of a single pile and pile group using analytical and numerical techniques, and considering the effects of either lateral loading or vertical loading under seismic conditions, have been implemented by Bhattacharya et al (2004Bhattacharya et al ( , 2009, Liyanapathirana and Poulos (2005a, b), Bhattacharya and Madabhushi (2008), Cubrinovski et al (2009), Dash et al (2010), Phanikanth et al (2013), Rovithis et al (2013), Bouckovalas and Chaloulos (2014), Chatterjee et al (2015a, b), Choudhury et al (2015), Dowling et al (2016), Kumar and Choudhury (2016), Kumar et al (2016) and Chatterjee (2018) in both liquefiable and non-liquefiable soils. However it is found that there are very few reports in the literature on the numerical analysis of a pile subjected to both vertical and horizontal loads under seismic loading conditions and hence the present study adopts a method to fill this existing research gap.…”

Section: Introductionmentioning

confidence: 99%

Seismic response of single piles in liquefiable soil considering P-delta effect

Chatterjee

Choudhury

Rao

et al. 2019

Bull Earthquake Eng

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Dynamic analyses of piles subjected to both vertical and horizontal loading under seismic conditions are of great significance to geotechnical and practicing engineers and the numerical methodology proposed in the present study fills the existing research gap. A finite difference based computer program FLAC3D is used to model a single pile and obtain the deflection and bending moment behaviour along the depth of the pile, under earthquake loading conditions in both non-liquefiable and liquefiable soil. The various earthquake motions considered in the current analysis includes 1989 Loma Gilroy, 1995 Kobe, 2001 Bhuj and 2011 Sikkim motions The bending moment is maximum at the interface of the liquefying and non-liquefying soil layers due to shear strain in the soil being discontinuous across the interface of the layers. The free field ground surface displacement is observed to initially increase with time, reaching the maximum at some instant during shaking and thereafter it remains constant with time, due to local failure of the liquefiable soil around the pile foundation. The combination of vertical load and lateral load on the pile top is varied to obtain the P-delta curves under dynamic loading conditions which are important factors for peak pile bending moment, when there is lateral spreading due to liquefaction causing displacement of the pile head, and inertial load from the superstructure is present. Hence a thorough evaluation of both horizontal and vertical inertial interactions and kinematic interactions due to free field motions, is necessary for considering the behaviour of piles in liquefiable soil and under combined loading situations.

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Seismic Liquefaction Hazard and Site Response for Design of Piles in Mumbai City

Cited by 34 publications

References 27 publications

Studi Perilaku Tiang Group Pada Lapisan Tanah Terlikuifaksi

Studi Perilaku Tiang Group Pada Lapisan Tanah Terlikuifaksi

Soil Liquefaction and Its Impact on Pile Foundations

Seismic response of single piles in liquefiable soil considering P-delta effect

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