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M. Yusa
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Engineering

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Pengaruh Indeks Plastisitas Tanah Terhadap Koefisien Konsolidasi Vertikal (Cv) Dan Horizontal (Ch) Fauzan Hidayattullah; Ferry Fatnanta; M. Yusa
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Soft soils have instability problems that cannot be tolerated, so when a construction is to be built, the soft soil has to go through several methods of soil repair. One of them is by giving a load above the ground to increase the pressure of pore water in the soil, so that the water that fills the pore space on the ground out so that it causes the volume of pores in the soil to shrink and is also followed by a settlement in soil, this event is called consolidation. Generally consolidation occurs only in the vertical direction (cv), while in this study horizontal direction consolidation (ch) was obtained by modifying the consolidation test by using a membrane to limit the movement of pore water when compressed by the load so that the water moves radially towards the vertical hole containing the sand that has been prepared. This study aims to analyze between vertical consolidation coefficient (cv) and horizontal consolidation coefficient (ch) which is associated with the physical properties of soil namely soil plasticity index through laboratory tests. Therefore, it is necessary to vary soil samples that have diverse physical properties of soil, soil sample variation is obtained by mixing two types of soils that have different soil classifications using weight percentages of 0%, 25%, 50%, 75% and 100%. The results of this study showed soil samples that had a high plasticity index resulted in a greater value of vertical consolidation coefficient (cv) and horizontal consolidation (ch) compared to soil samples that had low plasticity index values. It is also related to the consolidation testing method which has differences in flow length and physical properties of soil samples such as moisture content (w), type weight (Gs) and initial pore number (eo) which affect to time of settlement. Keywords : Soft, soil, Consolidation, Vertical drain, Physical properties, Atterberg limit, Plasticity Index
Pengaruh Kerusakan Jalan Terhadap Kinerja Jalan (Studi Kasus : Jalan SM. Amin Kota Pekanbaru) Karizal Karizal; M. Yusa; Elianora Elianora
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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SM. Amin road is a national road with two lane two way undivided road (2/2 UD) type in Pekanbaru. Many heavy vehicles pass this road, thus making damage in SM. Amin road especially in Sta 7+400 – Sta 7+600. The road damage will have an impact on the road performance which is decreasing. The aims of this research are to identify the type of damage and to compare road performance in road segment (road with damage and un-damage) by using Indonesian Highway Capacity Manual (MKJI) 1997 method. The conclusion on this research are: (1) the type of damage that greatly affects the decrease in speed is delamination (2) Degree of Saturation in both road segment is 0.71 that mean the road still proper to use, the delay in SM. Amin road caused by the damage on the road. (3) The average speed of road segment in damage and un-damage road is 20km/hours and 29km/hours respectively. (4) The level of service for road segment in un-damage road is in C level category, and D level category for damage road.Keywords: Road Damage, Road Performance, Level Of Service
Analisis Perilaku Tiang Tunggal Akibat Beban Aksial Tekan Dengan Metode Empirik Dan Elemen Hingga M. Gevin Ardi; M. Yusa; S. A. Nugroho
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The purpose of this research is to analyse the behavior of single piles under axial compressive load, as far as settlement, load transfer mechanism, and static loading test are concerned. It includes a literary review of two elastic theory-based methods, the Poulos and Davis method and the Randolph and Wroth method, as well as axisymmetric elastic modelling using the finite element-based program Optum G2. The result given by each method are organized in dimensionless charts of settlement and proportion of load transferred to the pile base in terms of the pile slenderness ratio and soil inhomogeneity and the load in terms of the pile settlement and compared amongst each other. This reseacrh also studies axisymmetric elastoplastic modelling in Optum G2, considering the Mohr-Coulomb failure criterion. The case study of the simulation static load test performed on test pile. The soil parameters are got of some project in Riau Province. Althought limited information is available regarding the geological and the geotechnical conditions of the site, the overall results were quite satisfactoryKeywords : pile, axial, elastic method, finite element
Analisis Perbandingan Metode PD T-05-2005-B Dan Pedoman MDPJ No. 04/Se/DB/2017 Dalam Perencanaan Overlay Pada Ruas Jalan SM. Amin Pekanbaru M. Nurul; Elianora Elianora; M. Yusa
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Road is a land transport infrastructure which has important role to facilitate economic activities in a certain area. SM. Amin Road in Pekanbaru is a causeway that connects Pekanbaru city to Minas, Siak. Any damage found on the road can cause serious inconvenience to road users, hence a essential maintenance deemed necessary. Improper overlay design may cause the rapid deterioration (under-design) or the overlay construction is uneconomical (over-design). Therefore, it’s required a spesific method to get a good design overlay. This study revealed that overlay is required for SM. Amin road at KM 03+900 – 05+200. This study compared two different methods of overlay design i.e. Pd T-05-2005-B and i.e. No.04/SE/DB/2017. Pd T-05-2005-B gives overlay thickness of 20 cm where as No.04/SE/DB/2017 gives 11 cm. The big difference in the overlay thickness between the two methods is caused by differences in seasonal factors, temperature correction factors and formulas in overlay calculation.Keywords: Benkelman Beam, Deflection, Overlay
Co-Authors Elianora - Fauzan Hidayattullah Ferry Fatnanta Karizal Karizal M. Gevin Ardi M. Nurul S. A. Nugroho