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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Research Report - Engineering Science Jurnal Teknik Sipil Jurnal Teknik Sipil dan Perencanaan Jurnal Teknik Sipil Teras Jurnal Journal of the Civil Engineering Forum U Karst Civil Engineering Dimension Dinamisia: Jurnal Pengabdian Kepada Masyarakat BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil SIKLUS: Jurnal Teknik Sipil Jurnal Aplikasi Teknik Sipil Jurnal Rekayasa Sipil Journal of Applied Engineering and Technological Science (JAETS) Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil APPLIED RESEARCH ON CIVIL ENGINEERING AND ENVIRONMENT (ARCEE) Journal of the Civil Engineering Forum Makara Journal of Technology Indonesian Geotechnical Journal
Aswin Lim
Jurusan Teknik Sipil, Fakultas Teknik Universitas Katolik Parahyangan, Bandung
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Journal : Journal of the Civil Engineering Forum

 1 
Finite Element Modelling of Prestressed Concrete Piles in Soft Soils, Case Study: Northern Jakarta, Indonesia Aswin Lim; Varian Harwin Batistuta; Yiska Vivian Chritiansen Wijaya
Journal of the Civil Engineering Forum Vol. 8 No. 1 (January 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (842.844 KB) | DOI: 10.22146/jcef.3597

Abstract

Jakarta is faced with limited land resources due to its position as the capital city of Indonesia. Therefore, numerous high-rise buildings are being constructed to solve this problem and provide accommodations for a large number of Jakarta residents. Studies have shown that prestressed concrete piles (spun piles) are commonly used as the foundations of high-rise buildings in metropolitan cities across Indonesia, especially in the Northern Jakarta Coastal area, which is predominant with deep soft soils deposit. To further assess and verify the ultimate capacity of the pile, a static loading test was conducted. However, not all results from the field test produced ideal, accurate, precise, and reliable load-settlement curve (until failure) results. Therefore, this study aims to determine the soil properties for the analysis of prestressed concrete spun piles with a diameter of 600 mm in the Northern Jakarta coastal area based on the standard penetration test values (SPT-N). It is a case study of a well-documented static pile load test using the kentledge system. Back analyses were performed by the finite element method to obtain the extrapolated load-settlement curve. Furthermore, the effect of interface strength between pile and soil on the load-settlement curve was also investigated. The results showed that a reduction of interface strength leads to a smaller load–settlement curve. In addition, several geotechnical engineering parameters of soil, such as the undrained shear strength and effective young's modulus, were established using data from an in-situ soil site investigation and empirical correlations with SPT-N.
The Determination of Downhole Dynamic Compaction Paramaters Based on Finite Element Analysis Martin Wijaya; Ahmad Kemal Arsyad; Aswin Lim; Paulus Pramono Rahardjo
Journal of the Civil Engineering Forum Vol. 8 No. 3 (September 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.3467

Abstract

Downhole dynamic compaction (DDC) has been commonly used in China to stabilize collapsible soil through the application of construction and demolition waste material (CDW). DDC basically forms a column inside the soil stratum which is similar to a stone column except DDC materials are put in sequence and then compacted by using DDC hammer. Due to its attractive features such as its big diameter, feasibility of using oversized material particles, rapid and simple construction technique, it is used as one of the ground improvement methods for an airport project in Indonesia. Despite of all the advantages provided by DDC, it is difficult to obtain DDC parameters from laboratory tests as it is difficult to replicate the compaction effort induced by the DDC hammer and laboratory tests are not commonly employed for oversized materials. Hence, alternative method is required to evaluate DDC parameters. In this study, static load test is conducted to determine load-deformation curve of the DDC pile. Soil parameters are first determined through soil test data such as standard penetration test (SPT), laboratory test and also pressure meter tests. Correlation between pressure meter tests and SPT test result is also carried in order to interpret the soil parameter at the site. Axisymmetric finite element analysis is then carried by using MIDAS GTS NX in order to back analyses DDC parameters by matching the simulation curve with load settlement curve of the DDC. In this paper, it is shown that back analysis using hardening soil model for DDC material can be used to match simulation curve with the load-deformation curve.
Comparison of Material Point Method and Finite Element Method for Post-Failure Large Deformation Geotechnical Analysis Arif Yunando Sunanhadikusuma; Ezra Yoanes Setiasabda Tjung; Aswin Lim
Journal of the Civil Engineering Forum Vol. 9 No. 1 (January 2023)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.3524

Abstract

Finite Element Method (FEM) has been the state-of-the-art method in geotechnical analysis since it first formulated in the 40s. It capable to handle Multiphysics simulation, soil-structure and soil-water interaction, and time history analysis. Though powerful, the standard Lagrangian FEM suffers mesh distortion when handling large strain deformation problem. This mesh entanglement problem makes post-failure analysis is considerably challenging to model if not impossible to do using FEM. The Material Point Method (MPM) then later introduced to solve these large strain deformation problems. Adapted from the Particle in Cell (PIC) method, MPM is a hybrid method that combines Eularian and Lagrangian approach by utilizing moving material points which are moving over spatially fixed computational mesh. This approach enables MPM to calculate not only fluid mechanics such in PIC but also solid mechanics and its intermediatory states. To demonstrate the capability of MPM and its consistency with FEM in geotechnical analysis, this article presents a comparison of FEM and MPM analysis on a hypothetical slope using Mohr-Coulomb constitutive model. The simulation shows that both FEM and MPM analyses are consistent to each other especially in small strain scheme. However, in large strain deformation, MPM is still able to get convergent result while FEM is not. The MPM simulation is also able to animate post failure behavior clearly, calculate post-failure strains and stresses distribution, and present final geometry of the model.
Co-Authors Adrianus Renaldy Aglia, Grisella Ahmad Kemal Arsyad Albert Sebastian Aldrianita, Tabitha Alfrendo Satyanaga Alfrendo Satyanaga Anastasia Sri Lestari Andra Ardiana Andy Sugianto Andy Sugianto Anthonius Steven Sutanto Ardiana, Andra Arif Yunando Soen Arif Yunando Sunanhadikusuma Bobby Minola Ginting Budijanto Widjaja Budijanto Widjaja Cheryl, Monica Frances Christian William Munaba Clinton Girsang Darian, Evan Dary Aulia Muhammad David Kristian Erdian, Andreas Evan Darian Ezra Yoanes Setiasabda Tjung Fadhil, Imam Ahmad Felix Hidayat Gofar, Nurly Hartieni, Patricia Helmy Hermawan Tjahjanto Henky Muljana Henky Muljana Herry Suryadi Hizbulmalik, Ziyan Ignatius Tommy Pratama Ihut, Karolina Villa Delfia Jogiadinata, Evelyn Johannes Adhijoso Tjondro Karlinasari, Rinda Lie, Edwin Martin Wijaya Muhammad Hanif Muhammad, Dary Aulia Octavianus Arvin Sukiwan Paulus Pramono Paulus Pramono Rahardjo Prassetyo, Simon Heru Putra, Heriansyah Siska Rustiani Stefani Wiguna Suharyadi, Bambang Syifanaya, Sharfina Faradiba Sylvia Herina Theresita Herni Setiawan Varian Harwin Batistuta Verguson, Yoghi Jo Vienti Hapsari Vinna Fransiska Chou Wellyanto Wijaya Widjaja, Hasky Wijaya, Martin Wijaya, Obaja Triputera William, Octavianus Yiska Vivian Chritiansen Wijaya Yohanes Albrecht Montol Yohanes Lim Dwi Adianto Zakwan Gusnadi