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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa Jurnal Konstruksia REKAYASA Journal of Advanced Civil and Environmental Engineering RACIC : Rab Construction Research AGREGAT Jurnal Aplikasi Teknik Sipil Jurnal Pensil : Pendidikan Teknik Sipil EPI International Journal of Engineering Nusantara Science and Technology Proceedings Extrapolasi Jurnal Teknik Sipil AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) KERN : Jurnal Ilmiah Teknik Sipil Jurnal Talenta Sipil JITSi : Jurnal Ilmiah Teknik Sipil RESLAJ: Religion Education Social Laa Roiba Journal Journal of Civil Engineering and Vocational Education Advance Sustainable Science, Engineering and Technology (ASSET) Media Konstruksi : Jurnal Ilmiah Teknik Sipil Jurnal Abdi Karya Sipil Jurnal Ilmiah Teknik Sipil Open Access DRIVERset
Dian Purnamawati Solin
Civil Engineering Department, Faculty Of Science And Technology, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya, Indonesia.
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Numerical Analysis of Road Embankment Stability and Settlement Using Variations of Bamboo Chips and Fly Ash Mixtures Vio Aditya Pratama Wijaya; Dian Purnamawati Solin; Karina Meilawati Eka Putri
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i2.1052

Abstract

Soft soil is one of the major challenges in road embankment construction due to its low bearing capacity, low shear strength, and high compressibility, which may lead to excessive settlement and slope instability. Therefore, an effective ground improvement method is required to enhance the mechanical performance of the subgrade soil. This study aims to analyze the stability and deformation behavior of road embankments constructed on soft soil stabilized with Fly Ash and reinforced with Bamboo Chips. The analysis was carried out using the Finite Element Method (FEM) based on the Mohr–Coulomb constitutive model. The numerical modeling compared untreated soil conditions with stabilized soil conditions using various percentages of Fly Ash and the addition of Bamboo Chips. Soil parameters were obtained from laboratory testing and incorporated into the numerical model. The analysis stages included embankment geometry modeling, load application, consolidation analysis, and safety factor analysis using the phi/c reduction method. The results indicate that the addition of Fly Ash and Bamboo Chips increased the embankment safety factor and reduced settlement compared to untreated soil conditions. Therefore, the combination of chemical stabilization using Fly Ash and reinforcement with Bamboo Chips has the potential to become an effective and sustainable alternative for soft soil improvement in road embankment construction in Indonesia. Contribution to Sustainable Development Goals (SDGs):SDG 9   : Industry, Innovation and InfrastructureSDG 11 : Sustainable Cities and CommunitiesSDG 12 : Responsible Consumption and ProductionSDG 13 : Climate ActionSDG 15 : Life on Land
Implementasi Drainase Berkelanjutan dan Infrastruktur Hijau sebagai Solusi Adaptasi Iklim: Mitigasi Banjir dan Konservasi Air Tanah di Desa Kedamean Karina Meilawati Eka Putri; Dian Purnamawati Solin; Griselda Junianda Velantika
Jurnal Abdi Karya Sipil Vol. 2 No. 1 (2026): April 2026
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Sains, Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jaksi.v2i1.16

Abstract

Permasalahan banjir di wilayah pedesaan yang mulai terurbanisasi, seperti Desa Kedamean di Kabupaten Gresik, memerlukan solusi yang tidak hanya teknis tetapi juga berbasis partisipasi masyarakat. Sistem drainase konvensional yang hanya berfokus pada pengaliran air terbukti kurang efektif dan cenderung memicu kekeringan di musim kemarau karena berkurangnya infiltrasi. Kegiatan pengabdian masyarakat ini bertujuan mengimplementasikan strategi adaptasi iklim melalui penerapan drainase berkelanjutan dan infrastruktur hijau. Metode yang digunakan adalah sosialisasi interaktif dan demonstrasi teknis menggunakan alat peraga (mock-up) konstruksi Lubang Resapan Biopori (LRB) serta sumur resapan. Hasil kegiatan menunjukkan transformasi paradigma yang signifikan pada kader PKK mengenai pengelolaan air hujan. Peserta berhasil mengidentifikasi korelasi antara peningkatan infiltrasi dengan stabilitas ketersediaan air tanah untuk mitigasi kekeringan. Penggunaan media peraga terbukti efektif meningkatkan diseminasi teknologi tepat guna bagi masyarakat awam. Oleh karena itu, dapat disimpulkan bahwa integrasi infrastruktur hijau berbasis komunitas merupakan instrumen krusial dalam menciptakan resiliensi pemukiman terhadap bencana hidrometeorologi.
Optimasi Kedalaman Tiang Bor untuk Memenuhi Kinerja Daya Dukung dan Deformasi pada Kondisi Ketidaksempurnaan Lubang Pengeboran Alivia Wulan Yufika; Dian Purnamawati Solin; Karina Meilawati Eka Putri
Rekayasa Vol 19, No 1: January - April 2026
Publisher : Universitas Trunodjoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v19i1.34223

Abstract

Penelitian ini bertujuan untuk menganalisis kinerja fondasi tiang bor pada kondisi ketidaksempurnaan lubang pengeboran yang menyebabkan pengurangan kedalaman tiang dari 38 m menjadi 30 m. Penelitian ini dilakukan untuk memberikan evaluasi antara kapasitas aksial, kapasitas lateral, serta deformasi fondasi pada kondisi ketidaksempurnaan lubang pengeboran, sekaligus merekomendasikan langkah optimasi yang sesuai dengan kondisi lapangan. Analisis dilakukan terhadap kapasitas daya dukung aksial menggunakan metode Reese and Wright (1977), kapasitas daya dukung lateral menggunakan metode Broms (1964), serta deformasi berupa penurunan aksial dan defleksi lateral menggunakan pendekatan numerik berbasis kurva t–z dan p–y. Hasil analisis menunjukkan bahwa kapasitas daya dukung aksial menurun dari 1287,629 ton menjadi 1006,807 ton atau sebesar 21,81% akibat berkurangnya kontribusi tahanan selimut. Pada analisis lateral, diperoleh kapasitas ultimit sebesar 150,28 kN dengan metode analitis dan 161,4 kN dengan pendekatan numerik, yang menunjukkan bahwa pendekatan numerik memberikan hasil yang lebih rinci. Dari sisi deformasi, penurunan aksial meningkat dari 8 mm menjadi 14 mm, sedangkan defleksi lateral meningkat dari 56 mm menjadi 65 mm. Hasil tersebut menunjukkan bahwa ketidaksempurnaan lubang pengeboran berpengaruh signifikan terhadap penurunan kapasitas dan peningkatan deformasi fondasi. Oleh karena itu, diperlukan upaya optimasi berupa penambahan kedalaman tiang serta penggunaan casing permanen hingga ujung fondasi untuk memastikan kinerja fondasi tetap memenuhi persyaratan teknis.
Numerical Analysis of the Influence of Bamboo Chips Variations on Road Embankment Stability and Settlement Arasi Arahman; Dian Purnamawati Solin; Karina Meilawati Eka Putri
EPI International Journal of Engineering Vol 8 No 2 (2025): Volume 8 Number 2, August 2025
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Soft soil is characterized by low bearing capacity, high compressibility, and substantial settlement, thereby frequently causing complications in road embankment construction. One viable method for soil improvement is stabilization utilizing eco-friendly materials, such as bamboo chips. However, research concerning the effects of varying bamboo chip mixtures on the stability and settlement of embankments constructed on soft soil remains limited. This study aims to analyze the impact of bamboo chip mixture variations on consolidation characteristics, embankment stability, and soft soil settlement, utilizing the finite element method via PLAXIS 2D software. The investigation was conducted through one-dimensional consolidation testing (oedometer tests) on native soil and bamboo chip mixture variations of 25%, 30%, and 35%. The experimental results served as input parameters for the PLAXIS 2D numerical modeling to evaluate the safety factor and embankment settlement. The findings indicate that the incorporation of bamboo chips effectively enhances embankment stability and mitigates soil settlement compared to untreated soil conditions. The TA + BC (Native Soil + Bamboo Chips) 30% variation yielded the most optimal outcomes, exhibiting the lowest compression index and consolidation settlement, alongside a higher safety factor relative to the other variations. Overall, bamboo chips demonstrate significant potential as an economical and environmentally sustainable alternative stabilization material for road embankment construction over soft soils.
Effect of treatment period on apus bamboo on compressive strength and Young's modulus: Efek masa perawatan pada bambu apus terhadap kuat tekan dan modulus young Salva Achmad Lail; Dian Purnmawati Solin
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.5562

Abstract

As time goes by, land is getting narrower and the price of land to build a building is getting higher. It is often found in the field that soil conditions are less favorable, especially on soft soil. So, there is a need for soil improvement measures to overcome this problem but at a relatively low cost. Using bamboo as soil reinforcement is a soil improvement technique that is easy to apply, can save costs, and has been proven safe to use several times in previous research. Apart from that, bamboo populations are also easy to find in almost all regions of Indonesia. In previous research, soil improvement was rarely carried out using Apus type bamboo as soft soil reinforcement. This is due to the lack of previous research on the compressive strength and young modulus values ​​of Apus type bamboo. Therefore, this research was carried out with the hope of providing an overview of the results of the compressive strength and Young's modulus values ​​of Apus type bamboo. The method used in testing was carried out by testing the compressive strength and young modulus values ​​of Apus type bamboo which were differentiated based on different treatment durations. Based on the test results, Apus bamboo without treatment has a compressive strength of 38.50 Mpa, where the more the bamboo is treated, the higher the compressive strength results obtained and the greatest value is obtained by bamboo with a treatment period of 14 days, namely 44.49 Mpa. Meanwhile, the elastic modulus value for bamboo for 7 days was 160847.187 kN/m2 and for treatment for 14 days the value was 287556.583 kN/m2.
ANALISIS POTENSI LIKUIFAKSI BERDASARKAN DATA SPT MENGGUNAKAN METODE HYPERBOLIC FUNCTION DENGAN VARIASI MAGNITUDO Andini Chaerania; Dian Purnamawati Solin; Himatul Farichah
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.5884

Abstract

Liquefaction occurs when solid soil transforms into a liquid state, causing a loss of strength. Yogyakarta is one of the areas prone to liquefaction. The 6.2 magnitude earthquake that struck Yogyakarta in 2006 triggered liquefaction in Bantul and Sleman regencies. Therefore, in analyzing liquefaction potential, variations in earthquake magnitudes of 4, 5, 6, and 7 are considered. This study employs the Hyperbolic Function method, with the research point located at a single site, BH-93. A low N-SPT value has the potential to cause liquefaction, and if subjected to an earthquake with a magnitude greater than 5, it may undergo deep liquefaction.
ANALISIS STABILITAS DINDING PENAHAN TANAH TIPE KANTILEVER PADA ABUTMENT JEMBATAN TERHADAP MUKA AIR BANJIR Jovanda Anggie Hirza Rivansyah; Dian Purnamawati Solin; Bagas Aryaseta
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6730

Abstract

Retaining walls play a crucial role in road and bridge infrastructure by resisting lateral earth pressure and preventing slope failure or damage caused by rising river water levels. This study compares the stability of gabion-type and cantilever-type retaining walls through manual calculations and numerical simulation using Geo5 software. The analysis focused on overturning, sliding, bearing capacity, and slope stability under both normal and flood water level (MAB) conditions. Manual calculations indicated that both wall types satisfied stability requirements with safety factors of 0.96–2.07 for overturning, 2.01–3.53 for sliding, and 6.89–6.92 for bearing capacity. However, Geo5 analysis showed that gabion walls were only safe in terms of overturning (6.70–7.50) and sliding (2.12–2.30), while bearing capacity (0.57–0.80 < 3.0–3.5) and slope stability (1.33–1.37 < 1.5) did not meet the required standards. In contrast, cantilever walls proved safe across all parameters, with safety factors of 7.25–9.87 for overturning, 2.09–2.48 for sliding, 3.14–4.90 for bearing capacity, and 1.52–1.69 for slope stability. Therefore, reinforced concrete cantilever retaining walls are more suitable as an effective and reliable alternative to gabion walls, particularly in flood-prone and landslide-prone areas.
ANALISIS MODIFIKASI TIANG PANCANG TERHADAP GAYA ANGKAT AKIBAT MUKA AIR TANAH M. Yusril Inza Mahendra; Yerry Kahaditu Firmansyah; Dian Purnamawati Solin
JITSi : Jurnal Ilmiah Teknik Sipil Vol. 6 No. 2 (2026): Juni 2026
Publisher : Universitas Perjuangan Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36423/jitsi.v6i2.2783

Abstract

Abstract— Fluctuations in the groundwater table not only generate hydrostatic uplift forces on the foundation slab but also alter the consolidation characteristics of the underlying clay (A. Rifai and T. S. Kurniadi, 2023). This study on a hotel construction project aims to analyze the performance of pile foundations subjected to uplift forces due to a rise in the groundwater level of up to 2.5 meters. The analysis examines axial bearing capacity using the method by Nakazawa, K. (1983), as well as deformations specifically axial settlement and lateral deflection using the finite element method. The analysis yielded an ultimate bearing capacity of 406.9 kN. Regarding deformation, initial uplift of 42 millimeters occurred in some foundation areas, followed by an additional 2.5-meter uplift. This issue confirms that uplift forces caused by groundwater exert a significant impact that can weaken foundation capacity and increase the risk of deformation. This condition is considered hazardous to structural stability if not addressed promptly. As a mitigation measure, this study recommends optimization efforts through changes in the dimensions of structural components. The proposed solution is to increase the pile diameter from 0.6 meters to 1 meter, to ensure that the overall foundation performance remains within safe limits and meets technical requirements. Keywords — Bearing Capacity, Foundation, Uplift Force Abstrak— Fluktuasi muka air tanah tidak hanya memicu gaya angkat hidrostatik pada pelat fondasi, tetapi juga mengubah karakteristik konsolidasi tanah lempung di bawahnya (A. Rifai and T. S. Kurniadi, 2023). Penelitian mengenai proyek pembngunan hotel ini bertujuan untuk menganalisis kinerja fondasi tiang pancang yang menglami kenaikan akibat muka air tanah dengan ketinggian maksimal sepanjang 2.5 meter. Analisis ini dilakukan terhadap kapasitas daya dukung aksial dengan menggunakan metode Nakazawa, K. (1983), deformasi berupa penurunan aksial dan defleksi lateral menggunakan finite element method. Pada analisis, diperoleh kapasitas daya dukung ultimit sebesar 406.9 kN. Dari sisi deformasi, pada beberapa area fondasi mengalami kenaikan awal sepanjang 42 meter, lalu mengalami kenaikan setinggi 2.5 meter. Dari permasalahan tersebut mengonfirmasi bahwa gaya angkat akibat air tanah memberikan dampak signifikan yang dapat memperlemah kapasitas serta meningkatkan risiko deformasi pada fondasi. Kondisi ini dinilai membahayakan stabilitas struktur jika tidak segera ditangani. Sebagai langkah mitigasi, penelitian ini merekomendasikan upaya optimasi melalui perubahan dimensi komponen struktur. Solusi yang diusulkan adalah memperbesar diameter tiang pancang dari ukuran semula 0,6 meter menjadi 1 meter, guna memastikan seluruh kinerja fondasi tetap berada dalam batas aman dan memenuhi persyaratan teknis. Kata kunci — Daya Dukung, Fondasi. Gaya Angkat
OPTIMASI SIFAT MEKANIS TANAH LUNAK DENGAN PENAMBAHAN BAMBOO CHIPS DAN FLY ASH Karina Jelita Putri; Dian Purnamawati Solin; Karina Meilawati Eka Putri
JITSi : Jurnal Ilmiah Teknik Sipil Vol. 6 No. 2 (2026): Juni 2026
Publisher : Universitas Perjuangan Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36423/jitsi.v6i2.2784

Abstract

Abstract— Soft soil, which is extensively distributed along the coastal regions of Indonesia, poses a significant geotechnical challenge to infrastructure development due to its characteristically low shear strength and high settlement potential. Consequently, ground improvement measures are imperative to ensure the stability and safety of structures constructed upon such deposits. Several studies have investigated the utilization of environmentally sustainable materials as alternatives for soft soil stabilization, including the incorporation of fly ash a pozzolanic industrial by-product that enhances interparticle bonding through cementitious reactions and bamboo fibre as a discrete mechanical reinforcement element proven to improve compressive strength and bearing capacity. Premised upon these findings, the present study combines both materials in the form of bamboo chips and fly ash to exploit the synergistic interaction between physical reinforcement and chemical stabilization mechanisms. This study aims to analyze the effect of bamboo chips and fly ash addition on the mechanical properties of soft soil and to determine the optimum mixture composition. Laboratory experiments were conducted comprising compaction (Proctor), Unconfined Compressive Strength (UCS), and California Bearing Ratio (CBR) tests, with bamboo chips variations of 25%, 30%, and 35% and a constant fly ash content of 15%. The results demonstrate that the most effective variation was achieved at 25% bamboo chips and 15% fly ash, yielding an undrained cohesion (Cu) of 200.345 kN/m² and a CBR value of 14.67% at 65 blows, which produced the most substantial improvement in both strength and bearing capacity of the soft soil relative to all other investigated variations. Keywords — Soft soil, Soil stabilization, Bamboo chips, Fly ash Abstrak— Tanah lunak yang tersebar luas di wilayah pesisir Indonesia menjadi tantangan serius dalam pembangunan infrastruktur akibat kuat geser yang rendah dan potensi penurunan yang tinggi. Oleh karena itu, diperlukan upaya perbaikan tanah agar struktur yang dibangun di atasnya dapat berdiri dengan aman dan stabil. Beberapa penelitian mengkaji penggunaan material ramah lingkungan sebagai alternatif stabilisasi tanah lunak, di antaranya penambahan fly ash yang bersifat pozzolan untuk meningkatkan ikatan antar partikel tanah, serta serat bambu sebagai elemen perkuatan mekanis yang terbukti meningkatkan kuat tekan dan daya dukung tanah. Berdasarkan hal tersebut, penelitian ini mengkombinasikan keduanya dalam bentuk bamboo chips dan fly ash untuk memanfaatkan efek sinergis antara perkuatan fisik dan stabilisasi kimia. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan bamboo chips dan fly ash terhadap sifat mekanis tanah lunak serta menentukan kadar campuran optimumnya. Pengujian dilakukan melalui serangkaian uji laboratorium meliputi pemadatan (Proctor), UCS, dan CBR dengan variasi bamboo chips sebesar 25%, 30%, dan 35% serta fly ash sebesar 15%. Hasil penelitian menunjukkan bahwa variasi paling efektif pada penambahan bamboo chips 25% dan fly ash 15%, dengan nilai Cu sebesar 200,345 kN/m2 dan nilai CBR sebesar 14,67% pada 65 tumbukan, yang memberikan peningkatan kekuatan dan daya dukung tanah lunak dibandingkan variasi lainnya. Kata kunci — Tanah lunak, Stabilisasi tanah, Bamboo chips, Fly ash
Analysis Stability of Retaining Wall type Soldier Pile during Dewatering Work on Hospital Construction Site Yulia Putri Ramadhani; Dian Solin; Yerry Kahaditu; Hoang-Khanh Le
Advance Sustainable Science Engineering and Technology Vol. 7 No. 3 (2025): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i3.1809

Abstract

Groundwater subsidence during dewatering work can be a serious challenge if soil conditions are unstable, potentially disrupting the stability of supporting structures such as soil retaining walls. This research analyzed the stability of soldier pile type soil retaining walls  during the dewatering process in hospital construction projects in the BSD area. The data used included the results of Standard Penetration Test (N-SPT), monitoring of dewatering work, inclinometer readings, and stability analysis using a 2D-based finite element software. The simulation results showed that the decrease in the groundwater level caused a change in lateral pressure on the retaining wall, with the maximum deformation reaching 2 m and the safety factor dropping from SF = 2.5 to SF = 2.2. If the analysis indicates a critical impact on stability (SF < 1.5 or deformation exceeding tolerances), then mitigation measures such as the installation of additional struts or dewatering system optimization are required. These findings provide technical guidance to minimize the risk of structural failure during the dewatering process on softsoils.
Co-Authors Abidin Isa Alhabsyi, Ali Zainal Ahmad Yusuf Habibur Rouf Albar, Aldino Maulana Alfin Reza Saputra Alfin Alivia Wulan Yufika Andini Chaerania Arasi Arahman Arasi Arahman Arraya Fredericko Romanza Aryaseta, Bagas Astawa, Made Dharma Dini Oktavia Dio Alif Hutama Fithri Estikhamah Griselda Junianda Velantika Haryono, Muhammad Iqbal Yefa Imam Hendrata Wibisana Himatul Farichah Himatul Farichah Hoang-Khanh Le Jovanda Anggie Hirza Rivansyah Karina Jelita Putri Karina Meilawati Eka Putri Lutfiah, Ine M. Yusril Inza Mahendra Made Dharma Astawa Mochammad Nouval Diva Ramadhan Mochammad Nouval Diva Ramadhan Muhammad Fauzi Jatmiko Muhammad Wildan Naufal Angger Wasesa Nugroho Utomo Nugroho Utomo Nulya M, Anisya Aura Pare, Jeremy Rumbaya Kondo Primasari Cahya Wardhani Putri, Karin Dwi Jayanti Salsabila Aulia Salva Achmad Lail Saputra, Alfin Reza Sefrina, Ani Siti Zainab Siti Zainab, Siti Sukmawati, Eka Vio Aditya Pratama Wijaya Wulandari, Malinda Yerry Kahaditu Yerry Kahaditu Firmansyah Yulia Putri Ramadhani