Journal of Infrastructure and Civil Engineering

Kelayakan Finansial Keberhasilan Proyek Infrastruktur: A Systematic Literature Review

Zahwa Diah A.P — 2026-07-15

Penelitian ini bertujuan untuk memetakan pola dan alokasi penelitian mengenai kelayakan finansial proyek infrastruktur di Indonesia periode 2021–2025. Metode yang digunakan adalah Systematic Literature Review (SLR) dengan kerangka PRISMA. Pencarian literatur dilakukan melalui Google Scholar dan menghasilkan 16 jurnal yang memenuhi kriteria inklusi dari 153 dokumen awal. Data diekstraksi berdasarkan tujuan penelitian, indikator kelayakan finansial, jenis infrastruktur, cakupan geografis, dan status indeks Sinta. Hasil menunjukkan bahwa sektor transportasi darat, khususnya jalan dan jalan tol, mendominasi 50% studi yang dianalisis, dengan NPV sebagai indikator utama yang digunakan pada seluruh studi, diikuti oleh IRR, Payback Period, dan BCR. Distribusi geografis menunjukkan konsentrasi penelitian di Jawa dan Bali, sedangkan wilayah Indonesia timur masih sangat terbatas. Temuan ini menunjukkan adanya bias sektoral dan geografis dalam penelitian kelayakan finansial infrastruktur. Implikasi penelitian menegaskan perlunya diversifikasi sektor infrastruktur yang dikaji, peningkatan representasi wilayah luar Jawa, serta pendalaman metodologis melalui penerapan Value for Money, analisis risiko kuantitatif, dan skenario ketidakpastian. Dengan demikian, penelitian ini menyediakan pemetaan komprehensif yang dapat menjadi dasar pengembangan kebijakan dan penelitian lanjutan di bidang kelayakan finansial infrastruktur di Indonesia.

Evaluation of Drainage Channel Capacity on Rela–Sutomo Road, Medan City, Indonesia

Melvi Maulita Napitupulu — 2026-07-18

This study evaluated the capacity of the drainage system along Rela–Sutomo Road, Medan, to accommodate rainfall runoff and domestic wastewater. Rapid urban development and population growth have increased impervious surface coverage, surface runoff, and domestic wastewater generation, potentially exceeding the conveyance capacity of the existing drainage channels. This study aimed to determine whether the existing drainage system could accommodate the combined design discharge. The analysis included population projection using the least-squares method, estimation of domestic wastewater discharge, rainfall frequency analysis using the selected probability distribution for a 10-year return period, rainfall intensity estimation using the Mononobe method, runoff calculation using the rational method, and channel capacity calculation using Manning’s formula. Sediment depths and channel dimensions were directly measured across 10 drainage segments. The results showed that the design runoff discharge for the selected 10-year return period reached 24.46 m³/s, whereas the existing channel capacity was only 1.31 m³/s. Sediment accumulation reduced the effective cross-sectional area and decreased the channel capacity by up to 30%. Consequently, the combined inflow substantially exceeded the available channel capacity, indicating critical hydraulic overload and a high risk of flooding and surface inundation. The existing drainage system is therefore inadequate and requires channel normalization, periodic sediment removal, and hydraulic capacity improvement

Evaluasi Kelayakan Geoteknik Material Tanah Timbun dari Quarry Lokal di Wilayah Pesisir Dumai

Susy Srihandayani — 2026-07-18

Material tanah timbun merupakan komponen kritis dalam pekerjaan tanah infrastruktur pesisir, namun pemilihan material di Kota Dumai, Riau masih sering dilakukan berdasarkan jarak hauling dan biaya tanpa evaluasi kualitas teknis yang terukur. Penelitian ini mengevaluasi kelayakan geoteknik material dari tiga quarry lokal aktif—Pelintung, Bukit Nenas, dan Bukit Timah—untuk digunakan sebagai material timbunan dalam konstruksi sipil. Sampel terganggu diambil pada kedalaman 0,5–1,0 m dan diuji di laboratorium sesuai Standar Nasional Indonesia (SNI) meliputi kadar air alami, berat jenis, void ratio, porositas, batas Atterberg, dan uji pemadatan Proctor standar. Hasil dibandingkan dengan SNI 8460:2017 dan Spesifikasi Umum Bina Marga 2018 Divisi 3. Kadar air alami berkisar 10,43–16,12%, kepadatan kering maksimum 1,65–1,86 g/cm³, dan indeks plastisitas 9,60–13,68%. Material Quarry Pelintung memenuhi seluruh persyaratan dan diklasifikasikan sebagai timbunan pilihan (selected fill); Quarry Bukit Nenas layak sebagai timbunan umum (common fill) dengan pengendalian kadar air; sedangkan Quarry Bukit Timah bersifat marginal dan memerlukan pencampuran pasir atau pengeringan sebelum pemadatan. Tren invers antara indeks plastisitas dan kepadatan kering maksimum dikonfirmasi secara statistik. Temuan menunjukkan bahwa material quarry lokal Riau dapat dimanfaatkan secara optimal untuk konstruksi berkelanjutan apabila disesuaikan dengan fungsi struktural dan didukung pengendalian kadar air serta kepadatan lapangan yang disiplin.

Scenario-Based Analysis of Hydraulic Response in the Senapelan River Reach

Daly Riandi — 2026-07-18

The absence of long-term observed hydrological data poses a significant challenge for urban flood management. This study addresses data scarcity in the Kedungsari reach of the Senapelan River, Pekanbaru, Indonesia, by combining 1D steady-flow hydraulic modeling with empirical hydrological estimation to determine the channel's critical bankfull capacity and its corresponding return period. The model isolated the maximum safe bankfull capacity at 17.20 m³/s, identifying Cross-Section 4 as the primary hydraulic bottleneck. Mapping this physical capacity onto the regional design flood frequency curve revealed that the existing channel corresponds to a low return period of approximately 1.5 years. Consequently, the channel is severely undersized, failing to contain a standard 2-year frequent flood (24.70 m³/s) or the legally mandated 10-year extreme event (33.26 m³/s).

Comparative Seismic Performance of Flat Slab-Drop Panel and Conventional Slab Systems for Hospital Buildings

Putu Didik Sulistiana — 2026-07-18

Hospitals are classified as essential facilities and therefore require adequate seismic performance to maintain structural safety during earthquake events. This study compares the seismic performance of a conventional slab system and a flat slab-drop panel (FSDP) system in a four-story reinforced concrete hospital building using the Response Spectrum Analysis (RSA) method. Two three-dimensional structural models were developed in ETABS v21.2 with identical geometry, material properties, loading conditions, and boundary conditions. The only variable considered was the floor system configuration. Structural responses, including structural weight, fundamental period, inter-story drift, slab deflection, base shear, and column reinforcement demand, were evaluated in accordance with SNI 1726:2019 and SNI 2847:2019. The results indicate that the FSDP system increased the total structural weight by 6.54%, the fundamental period by 30.2% and 18.2% in the X- and Y-directions, respectively, and the base shear by 42.29% and 26.85%. In addition, the FSDP system produced larger inter-story drift, slab deflection, and column design demand than the conventional slab system. Nevertheless, all evaluated structural responses satisfied the design requirements specified in the applicable Indonesian standards. Overall, the conventional slab system was found to be more structurally efficient, exhibiting lower inter-story drift, slab deflection, base shear, and column reinforcement demand than the FSDP system, while both structural systems satisfied the seismic design requirements specified in SNI 1726:2019 and SNI 2847:2019. The FSDP system, however, offers greater architectural flexibility and construction efficiency.

Redesain dan Evaluasi Kinerja Fondasi Piled Raft Pada Tanah Lempung Berlapis Menggunakan MIDAS GTS NX

Nazla Nabilla — 2026-07-18

Proyek ini merupakan pembangunan gedung pendidikan bertingkat tinggi yang pada desain awal menggunakan fondasi tiang pancang. Pada tahap pengujian Pile Driving Analyzer (PDA), hammer mengalami kerusakan berupa pecah; evaluasi selanjutnya mengindikasikan adanya ketidaksesuaian antara interpretasi desain awal dan kondisi aktual lapangan. Kondisi tersebut mendorong dilakukannya redesain fondasi agar tetap memenuhi persyaratan kapasitas dan kemampulayanan. Penelitian ini mengevaluasi sistem piled raft pada tanah lempung berlapis melalui verifikasi analitis dan analisis elemen hingga tiga dimensi. Konfigurasi fondasi terdiri atas raft berukuran 74 m × 28 m dengan tebal 2 m dan 846 spun pile berdiameter 0,50 m serta panjang 12 m yang menerima beban layan 182.581,28 kN. Perhitungan analitis menghasilkan kapasitas izin tiang tunggal 627,81 kN, pembagian beban Poulos–Davis–Randolph sebesar 76,91% pada kelompok tiang dan 23,09% pada raft, serta penurunan 8,12 cm. Analisis MIDAS GTS NX menghasilkan penurunan maksimum 6,684 cm, rasio penurunan diferensial 0,000340, gaya tekan maksimum 541,749 kN pada kepala tiang dan 543,659 kN sepanjang elemen, serta rasio pemanfaatan maksimum 0,866. Kelompok tiang memikul 74,04% beban dan raft 25,96%. Perbedaan load sharing terhadap PDR sebesar 2,87 poin persentase menunjukkan pola distribusi beban yang konsisten. Hasil tersebut memenuhi kriteria evaluasi geoteknik yang digunakan.

Application of Type-2 Fuzzy Logic to Signal Timing Control at Signalized Intersections: Addressing Traffic Data Uncertainty

Julinaldi Julinaldi — 2026-07-18

Urban intersections are increasingly congested as motorized vehicle volumes continue to rise, while fixed-time signal control often fails to respond to dynamic traffic conditions. This review examines the use of Type-2 Fuzzy Logic (FL-T2) for adaptive signal timing control under traffic uncertainty and its relevance to Indonesian urban intersections. A systematic literature review was conducted on recent studies published between 2021 and 2025. The reviewed studies show that FL-T2 is generally built on fuzzification, rule-base formulation, inference, and defuzzification, with uncertainty represented through the Footprint of Uncertainty. The synthesis indicates that FL-T2 performs better than fixed-time control and Type-1 fuzzy logic in reducing delay, queue length, and saturation level, especially under fluctuating traffic conditions. Hybrid FL-T2 models with optimization algorithms also show stronger performance in simulation studies. However, practical implementation in Indonesia still depends on detector availability, data quality, computational feasibility, and institutional readiness. FL-T2 is therefore a promising adaptive control framework, but further local simulation and pilot testing are needed before field deployment.

Modification of Clay Soil Permeability with Palm Shell Ash for Road Subgrade Repair

Debby Endriani — 2026-07-20

The subgrade in Paloh 80, Tanjung Rejo Village, Percut Sei Tuan District, Deli Serdang Regency, is a fine-grained clay with low stability, making it unsuitable for use as a road subgrade without stabilization. Therefore, stabilization efforts are needed to improve its technical properties. This study aims to analyze the effect of adding palm shell ash (ACS) on changes in the permeability coefficient of clay soil. The research method used is a laboratory experiment with variations in ACS mixtures at 0%, 4%, 6%, 8%, 10%, and 12% of the soil's dry weight under optimum water-content conditions. The stabilization process involves mixing clay soil with palm shell ash in varying proportions, followed by testing in accordance with ASTM standards, specifically the falling-head permeability test. The results show that adding palm shell ash significantly reduces the permeability coefficient of clay soil. The original soil permeability value of 8.339 × 10^(-8) cm/s decreased to 4.355 × 10^(-8) cm/s in the 12% mixture. This decrease was caused by the palm shell ash filler, which filled soil pore spaces, thereby inhibiting water flow. The results showed that the addition of ACS significantly reduced the permeability coefficient of clay soil. The original soil permeability value of 8.339 × 10^(-8) cm/s decreased to 4.355 × 10^(-9) cm/s in the 12% mixture. This decrease was caused by the ACS filler, which filled soil pore spaces, thereby inhibiting water flow. Thus, palm shell ash has potential as an environmentally friendly stabilization material to improve the quality of road subgrades.