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All Journal AGREGAT Narotama Jurnal Teknik Sipil Jurnal Teknika : Jurnal Teoritis dan Terapan Bidang Keteknikan Serambi Engineering
Mohammad Ikhwan Yani
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Journal : Serambi Engineering

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Model Numerik dan Aplikasi Lapangan pada Peningkatan Daya Dukung Tanah Gambut yang Diperbaiki dengan Pasir serta Fondasi Kayu Plat Bersirip Baja Stephanus Alexsander; Fatma Sarie; Mohammad Ikhwan Yani; Liliana; Zadya Putra, Muhammad Ryan Febriza
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Building on peat soils often causes problems, one of which is significant settlement. Local people often use wooden foundations on peat soils, but they may not be able to support the load. This study proposes to modify the timber foundation by incorporating steel strip plates and sand amelioration, which will be simulated using software and subjected to laboratory testing to evaluate the effect of incremental loads on settlement. Peat soil samples were collected from Jalan Bukit Raya XIV, Palangka Raya for laboratory analysis of their physical and mechanical properties. Plaxis 2D software was used for the modeling analysis. Field loading continued until settlement reached the SNI 8460: 2017 allowable threshold of 2.5 cm. The soil test results were as follows: moisture content = 580.51%; fiber content = 33.12%; ash content = 4.64%; bulk density = 1.06 g/cm³; specific gravity = 1.79; cohesion = 0.0023 kg/cm²; angle of internal friction = 2°. The software analysis results indicate that modifying the hardwood base with three steel strip plates is the most effective method for load resistance. The load at 2.5 cm settlement is 340 kg from the load test and 350.5 kg from the Plaxis 2D analysis.
Analisis Stabilitas Lereng dengan Metode Bored Pile untuk Penanganan Tanah Longsor pada Ruas Jalan Muara Teweh – Jalan Pasar Punjung Sta 29+400 Stephanus Alexsander; Fatma Sarie; Mohammad Ikhwan Yani; Nomeritae; Edsel Kennardo
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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This study analyzed the slope stability of Muara Teweh road section - Jalan Pasar Punjung STA 29+400. A landslide occurred on the left side of the road with a height of 15 m and a length of 50 m. The analysis was performed using the finite element method with Plaxis 2d program to obtain a safety factor (SF) value based on secondary data from field and laboratory tests, after which the bored pile was designed and then reanalyzed to obtain the SF value. The initial SF of 1.847 was not consistent with field conditions (SF < 1.07), so a back-analysis was performed, resulting in an SF of 1.044. To prove that the analysis was correct, a comparison with Bishop's Limit Equilibrium Method was performed, yielding an SF = 1.000, so the value is correct. The design of the bored pile is planned with two vertical piles per point, each with a diameter of 0.5 m, length of 5 m, and spacing of 1 m along 50 m. For the size and number of reinforcements, 4D16 longitudinal bars and Ø10 - 100 mm stirrups were used. After stabilization, the SF increased to 1.260, meeting the minimum SF > 1.25, which indicates it is considered safe.
Co-Authors ANDRE RENALDY Angelia Mutyaraharjo Edsel Kennardo Fatma Sarie Liliana Liliana Sahay Mario Situngkir Nomeritae Okrobianus Hendri Sinaga, Ayu Rosaulina Stephanus Alexsander Zadya Putra, Muhammad Ryan Febriza