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Alternatif Perancangan Pondasi Tiang Pancang Jembatan Maros : Jalur Akses Menuju Stasiun Kereta Api Maros II Fatia, Salsa Purmadani; Sariman, Syahrul; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5136

This research discusses the alternative design of pile foundations on the Maros Bridge, as an access route to the Maros II Railway Station. In the existing foundation condition used is the bored pile type with a total of 18 piles for each abutment, which has a bearing capacity of 1038.02 kN (abutment 1) and 1400.18 kN (abutment 2) with a diameter of 0.8 m respectively. This alternative pile foundation design considers the comparison of the number, depth, and diameter of the foundation to achieve adequate bearing capacity and determine the shifts that occur using the Displacement Method. Based on the results of the design of the pile foundation design requires 22 piles with a diameter of 0.5 m for each abutment, with a pile foundation depth of 7 m at abutment 1 and 12 m at abutment 2 and with a horizontal shift value (Hi) 968.38, vertical (Vi) 2501.66, and moment (Mi) 3939.02. The bearing capacity of a single pile obtained is 788.3 kN for abutment 1 and 1278.52 kN for abutment 2, so the total bearing capacity that can be borne by the entire foundation in carrying the load of the upper structure has met the required requirements. The configuration of the existing bored pile foundation is 18 piles, while the alternative configuration plan results in a pile configuration of 22 piles with planned dimensions that are able to withstand the loads and forces acting on the bridge even though it requires a larger number of piles compared to the existing bored pile foundation.

Alternatif Perancangan Pondasi Tiang Pancang Sebagai Pengganti Pondasi Tiang Bor Pada Konstruksi Pile Slab Ismail, Windi; Setiawan, Arman; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5221

Pile foundations are widely used in construction, particularly for structures on low-bearing capacity soils or heavy buildings. Driven and bored piles are the most common types. This study explores driven piles as an alternative to bored piles, focusing on foundation strength through bearing capacity comparison. The selected driven pile is a prestressed precast concrete pile, 1 meter in diameter and 14 meters deep. The method involves calculating bearing capacity using the Meyerhoff equation based on N-SPT data, along with analyzing pile reactions and displacement at the supports through displacement analysis. The calculation results show that the carrying capacity of piles with a diameter of 1 m and a depth of 14 m reaches 2861 kN, larger than a drilled pile with a diameter of 0.8 m and a depth of 21 m with a carrying capacity of 1895.1 kN. Based on these results, prestressed spun pile concrete piles were selected with a concrete quality of fc' 50 MPa, a diameter of 1 m, and a total length of 21 m. The selection of this alternative based on the results of the analysis is still within the safe limit so that the foundation is safe to use.

Analisis Kuat Tekan Dan Kuat Lentur Beton Akibat Reduksi Semen Dengan Silicafume Dan Penggunaan Pasir Besi Dengan Zat Tambah Superplasticizer Aryanto Kadang Kassa; Syahrul Sariman; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4623

The construction industry is currently facing several challenges, one of which is the increasing use of cement in large quantities which also has a negative impact on the environment. To overcome these challenges, one solution that can be applied is to reduce cement in the concrete mixture. Cement reduction can be done by using pozzolanic materials such as silica fume. In addition to silica fume, the use of iron sand can also be a good alternative to reduce the use of silica sand in the concrete mixture. In this study, a normal concrete compressive strength design of 25 MPa was used with the mixing method carried out by partial replacement of cement by silica fume by 10% accompanied by substitution of sand and iron sand of 10%, 20% and 30% respectively and the addition of 2% superplasticizer. This study shows that the addition of 2% superplasticizer can increase the compressive strength of concrete using iron sand material. The compressive strength of concrete using 10% iron sand is 25.57 MPa, for 20% it is 26.42 Mpa and for 30% it is 27.48 MPa. For flexural strength also experienced an increase of 10% by 4.53 MPa, 20% by 4.80 MPa and 30% by 5.00 MPa. This study shows that partial replacement of cement with silica fume and the use of iron sand to concrete as a whole causes an increase in compressive strength and flexural strength with the addition of 2% superplasticizer for all percentages.

Analisis Penambahan Paku Terhadap Kuat Tarik Belah Dan Kuat Lentur Beton Yandri Liling Samma; Arman Setiawan; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4742

Along with the development of technology and increasingly complex construction needs, the use of concrete is growing and becoming increasingly important in infrastructure development. One innovation to improve the quality of concrete is by adding additives or substitute materials to concrete. But concrete still has many weaknesses, especially in tensile and flexural strength, therefore the use of fibers such as nails or steel fibers in concrete is expected to be able to overcome these problems. In this study, a normal concrete compressive strength design of 25 MPa was used with the aim of the study to obtain the effect of nails on the tensile strength and flexural strength of concrete. In this study, the percentage of added nails was 2%, 4%, 6%, 8%, 10% of the weight of the concrete. This study shows that the use of nails in concrete causes an increase in tensile strength and flexural strength in nail variations of 2%, but the use of nails with variations of 4%, 6%, 8% and 10% decreases tensile and flexural strength. Increased tensile strength and flexural strength in nail variations of 2% with values of 3.06 Mpa and 5.67 Mpa. This shows that the greater the addition of nails, the tensile and flexural strength achieved decreases.

Reduksi Semen Menggunakan Silicafume Dengan Bahan Tambah Naphthalene Terhadap Kuat Tekan Dan Kuat Lentur Beton Kurniawan Lido; Arman Setiawan; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.4760

Concrete is a very popular construction material and is widely used throughout the world. This is because concrete has several advantages, such as high strength, weather resistance, and relatively low cost, but forces the rate of cement production to increase which can cause carbon emissions and air pollution. Therefore, using silica fume as an alternative material as a cement reduction material by adding additional materials to strengthen the concrete mixture such as naphthalene. In this study, a normal concrete compressive strength design of 25 MPa was used with the aim of the study to obtain the effect of Cement Reduction Using Silica fume with Naphthalene Additives on the Compressive Strength and Flexural Strength of Concrete. The mixing method is carried out by partially replacing cement with silica fume by 10% and adding naphthalene additives of 0.2%, 0.4%, 0.6%, 0.8%, and 1%, respectively, by conducting concrete compressive and flexural strength tests. This study shows that the addition of Silica Fume as a partial replacement of cement by 10% with the addition of Naphthalene increases the compressive strength of concrete, and for a variation of 1% it gets the largest compressive strength value of 26.82 Mpa, and also increases the flexural strength value of concrete, and for a variation of 1% it gets the largest compressive strength value of 5.33 Mpa.

Analisis Penambahan Serbuk Batu Karang Dan Kapur Terhadap Nilai CBR Dan Permeabilitas Tanah Lempung Andi Adil Batara Idhang; Syahrul Sariman; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5000

Clay is a type of soil that has a low bearing capacity, so it needs to be stabilized to improve its quality as a road foundation. This research aims to analyze the effect of the addition of coral powder and lime on the value of California Bearing Ratio (CBR) and permeability of clay soil. The research was conducted in the laboratory using a mixture variation of 5% coral powder and lime with variations of 5%, 10%, and 15%. Tests were carried out on soil mechanical properties, especially CBR and permeability tests. The results showed that the addition of coral stone powder and lime increased the CBR value and decreased the permeability coefficient of clay soil. The highest CBR value was obtained in a mixture of 5% coral powder and 15% lime, with a significant increase compared to the original soil. The novelty of this research lies in the use of coral powder as a soil stabilization material combined with lime, which proved effective in increasing the strength of clay soil. The results of this study can be applied to road construction projects in areas with less stable clay soil characteristics. from this study it is concluded that the combination of coral powder and lime can increase soil bearing capacity and decrease permeability, making it suitable for use in soil stabilization in infrastructure projects.

Alternatif Perancangan Dinding Penahan Tanah Tipe Kantilever Untuk Perbaikan Longsoran Lereng Jalan Ruas Jalan Nasional Ampera – Surumana Sulawesi Tengah Sri Sulka Octavia Saputri K; A. Rumpang Yusuf; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5041

In earthquake-prone areas and on slopes at risk of landslides, appropriate slope reinforcement measures are essential. On the Ampera-Surumana road in Central Sulawesi, a landslide of 4.45 meters occurred on a slope opposite a river bend. This landslide was caused by river water seepage, load distribution, and seismic activity that damaged the existing stone masonry retaining wall. This study proposes a cantilever retaining wall as an alternative solution to address the landslide. Slope stability analysis was conducted using GEO5 software and the manual Bishop method. Before loading, the existing slope was safe, with a factor of safety (FS) of 2.29 (unsaturated) and 1.95 (saturated) according to GEO5, and 2.30 (unsaturated) and 1.95 (saturated) per Bishop method. However, after loading, the FS decreased to 1.22 (unsaturated) and 1.10 (saturated) based on GEO5 analysis, and 1.23 (unsaturated) and 1.10 (saturated) according to Bishop method. The analysis indicated a need for soil reinforcement. The stability analysis of the reinforced cantilever retaining wall showed significant increases in FS, with values of 2.59 for overturning, 2.48 for sliding, and 3.38 for bearing capacity using GEO5, and 3.07 for overturning, 2.29 for sliding, and 3.28 for bearing capacity from manual calculations, confirming the effectiveness of the cantilever design in improving slope stability according to SNI 8460:2017.

Pemilihan Konstruksi Penaggulangan Longsoran Atas Pada Ruas Jalan Poros Palopo - Bastem - Toraja Desa Bonglo, Kecamatan Bastem Utara Citra Angela; Syahrul Sariman; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5042

The Palopo-Bastem-Toraja axis road that crosses mountainous and valley areas in North Bastem Sub-district has sandy loam soil conditions that tend to be unstable and prone to landslides. Field observations show that there are eight landslide-prone points along the Latuppa-Bastem road section, with a major landslide occurring in Bonglo Village on February 26, 2024. This landslide was triggered by high rainfall intensity, lack of road safety structures, and caused material losses and casualties. This research aims to analyze the physical properties of the soil at the landslide site as a basis for retaining wall planning. Soil testing in the laboratory showed the soil at location 1 point 1 clay mixed with sand (0 - 1 meter), point 2 silt mixed with gravel (2 - 10 meters), and at location 2 point 1 clay mixed with sand (0 - 3 meters), point 2 silt mixed with gravel (3 - 10 meters). Slope stability analysis using Bishop's method indicates a safety factor of 0.98 < 1.05, indicating the condition of the slope is unsafe. The retaining wall chosen in this research is the Cantilever Wall, after designing the dimensions of the retaining wall, by controlling the safety of overturning, shearing and bearing capacity. From the design results, the rolling FK is 4.487, the sliding FK is 2.812, and the bearing capacity is 3.089, which shows the safety figures required in the SNI geotechnical design requirements

Pengaruh Penambahan Trass Dan Abu Kayu Bakar Terhadap Pengujian CBR Dan Permeabilitas Tanah Lempung Andi Azhari Alfarizi; Arman Setiawan; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5095

Development in Indonesia continues to develop along with advances in technology, many types of soil have been discovered to improve the quality of clay soil, which is often done through various stabilization techniques. One method that has attracted attention is the addition of Trass and Firewood Ash. Trass, which is a volcanic-based additive, has pozzolanic properties which can improve its carrying capacity, firewood ash as a by-product of wood burning waste. The aim of this research is to find out how much influence the addition of trass and firewood ash has on clay soil. In this research, CBR and Permeability testing was carried out with substitution of 10% trass at variations of 10%, 15% and 20%. And add firewood ash as much as 5%, 10%, 15% and 20%. The CBR and Permeability values have increased successively. The CBR value of the original soil was 13.03%, the soil with a mixture of 5% firewood ash and 10% firewood ash had CBR values of 21.85 and 22.16, while the CBR value with a mixture of trass and firewood ash was 32.96%, 42.67 % and 53.32%. Meanwhile, the permeability value for the original soil is 0.0039%, for soil with variations of 5% firewood ash and 10% firewood ash the permeability value is 0.0048cm/m3 and 0.0057cm/m3, while the permeability value with a mixture of trass and firewood ash is 0 .0066cm/m3, 0.0078cm/m3 and 0.0086cm/m3

Alternatif Perancangan Pondasi Tiang Pancang Jembatan Maros : Jalur Akses Menuju Stasiun Kereta Api Maros II Salsa Purmadani Fatia; Syahrul Sariman; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 4 No. 1 (2026): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2026
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v4i1.5136

This research discusses the alternative design of pile foundations on the Maros Bridge, as an access route to the Maros II Railway Station. In the existing foundation condition used is the bored pile type with a total of 18 piles for each abutment, which has a bearing capacity of 1038.02 kN (abutment 1) and 1400.18 kN (abutment 2) with a diameter of 0.8 m respectively. This alternative pile foundation design considers the comparison of the number, depth, and diameter of the foundation to achieve adequate bearing capacity and determine the shifts that occur using the Displacement Method. Based on the results of the design of the pile foundation design requires 22 piles with a diameter of 0.5 m for each abutment, with a pile foundation depth of 7 m at abutment 1 and 12 m at abutment 2 and with a horizontal shift value (Hi) 968.38, vertical (Vi) 2501.66, and moment (Mi) 3939.02. The bearing capacity of a single pile obtained is 788.3 kN for abutment 1 and 1278.52 kN for abutment 2, so the total bearing capacity that can be borne by the entire foundation in carrying the load of the upper structure has met the required requirements. The configuration of the existing bored pile foundation is 18 piles, while the alternative configuration plan results in a pile configuration of 22 piles with planned dimensions that are able to withstand the loads and forces acting on the bridge even though it requires a larger number of piles compared to the existing bored pile foundation.

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