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All Journal Jurnal Teknik Sipil Indonesian Geotechnical Journal
Cindarto Lie
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences

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Kajian Modulus Tanah Berdasarkan Uji Lapangan dan Uji Laboratorium Cindarto Lie
Jurnal Teknik Sipil Vol 14 No 1 (2018): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (399.051 KB) | DOI: 10.28932/jts.v14i1.1448

Abstract

Penelitian ini mengkaji tentang soil modulus (modulus tanah) yaitu suatu faktor yangmenghubungkan antara besarnya stress/tegangan dan strain/regangan yang terjadi pada tanah. Soilmodulus adalah salah satu parameter utamadalam analisa geoteknik yang menggunakan metodaelemen hingga atau finite elemen method (FEM). Soil modulus biasanya ditentukan melalui ujilaboratorium atau uji in-situ di lapangan.Ada berbagai macam dan ragamsoil modulus, tergantungdari kondisinya antara lain kondisi pembebanannya apakah static atau dynamic, drained atau undrained,level tegangan dan regangan yang terjadi, tegangan keliling dan seterusnya.
Study on Pile Bearing Capacity Improvement in Soft Soil After Vacuum Consolidation Adityaputera Wirawan; Cindarto Lie
Indonesian Geotechnical Journal Vol. 3 No. 1 (2024): Vol. 3, No. 1, April 2024
Publisher : Himpunan Ahli Teknik Tanah Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56144/igj.v3i1.65

Abstract

The main problem in developing property over soft soil is significant settlement due to the consolidation process. The soil settlement, which will occur gradually throughout the years, will disrupt existing infrastructures, in this case bridges. To mitigate this issue, the common method is by speeding up the consolidation. The consolidation process must be sped up to avoid the differential settlement problem at the bridge abutments. Due to the limited supply of fill material, a vacuum consolidation method is adopted. In this method, a Prefabricated Vertical Drain (PVD) is installed, and a vacuum is applied to impose pressure as preloading. Because of the consolidation process, theoretically, the effective stress of the consolidated soil increases, and the soil shear strength does as well. Increasing the shear strength of the soils will increases the pile capacity. However, the interesting question is how much the shear strength of the soil can increase and impacts the pile capacity. In this paper, the shear strength improvement of the consolidated soil and the effect on pile bearing capacity is evaluated. This study used a series of in-situ tests that were carried out before and after the vacuum consolidation. A pile loading test using the Pile Dynamic Analyzer (PDA) method was carried out to verify the pile bearing capacity improvements. From the comparison result, it is shown that the theoretical capacity of the piles after consolidation were close to the pile test results.
Co-Authors Adityaputera Wirawan