Teras Jurnal
Vol. 14 No. 1 (2024): Volume 14 Nomor 1, Maret 2024

Studi Perilaku Tiang Group Pada Lapisan Tanah Terlikuifaksi

Situmorang, Adolf (Unknown)
Kustirini, Anik (Unknown)
Purwanti, Hani (Unknown)



Article Info

Publish Date
25 Mar 2024

Abstract

Abstrak 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. Kata kunci: likuifaksi, sondir, daya dukung tiang, defleksi   Abstract Liquefaction is a phenomenon that occurs in soil layers due to earthquakes. When liquefaction occurs, the water pressure of soil has increased which causes the soil to lose shear strength, resulting in a decrease in effective stress and linearly resulting in a decrease in shear strength. This research was conducted to determine changes of pile behavior due to liquefaction of the soil layer along the pile. All analyses of changes of pile behavior are compared with conditions where there is no liquefaction layer, so that changes of pile behavior can be seen when there is liquefaction layer of soil. The results of the deflection analysis, it is known that there is a large change in deflection when compared between the non-liquefaction layer and the liquefaction layer, namely from 0.16 mm to be 4.32 mm or increases 4.16 mm. The change in moment for the liquefaction layer is 23 kN to be 219 kN for the liquefaction layer condition or increases 196 kN.m, the same thing as the change in bearing capacity which decreases when liquefaction occurs, so it is concluded that there is a change of pile behavior if there is a liquefaction layer. Keywords: liquefaction, CPT, bearing capacity of pile, deflection

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Journal Info

Abbrev

teras

Publisher

Subject

Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

Description

Teras Jurnal is a journal that communicates the results of research within the scope of civil engineering and scientific development as well as aspects of practitioners. The process of manuscript submission is open throughout the year. All submitted manuscript will be screened with double-blind peer ...