Merancang Pemodelan Gerusan Lokal pada Pilar Jembatan Menggunakan Metode HEC-18 Berbasis Python
DOI:
https://doi.org/10.29103/tj.v15i2.1276Keywords:
simulasi numerik, pemodelan hidraulika, keamanan jembatan, analisis aliran sungai, analisis fondasi jembatanAbstract
Abstrak
Gerusan lokal mengancam kestabilan pilar jembatan saat banjir, sementara perhitungan manual metode HEC-18 lambat dan rentan kesalahan, terutama di wilayah dengan curah hujan tinggi dan arus sungai deras. Penelitian bertujuan mengembangkan model perhitungan gerusan berbasis metode HEC-18 untuk mendukung analisis yang lebih cepat dan akurat. Metode ini diterapkan dalam pengembangan aplikasi berbasis Python yang dilengkapi dengan visualisasi 2D dan potongan, sehingga mempermudah analisis dampak gerusan terhadap jembatan secara lebih intuitif.. Hasil penelitian menunjukkan bahwa aplikasi ini tidak hanya mempercepat proses perhitungan dibandingkan metode manual, tetapi juga secara signifikan mengurangi potensi kesalahan manusia serta memberikan solusi yang lebih efektif dan akurat dalam menjaga keberlanjutan jembatan. Kesimpulnya adalah penelitian ini berhasil mengembangkan model perhitungan gerusan berbasis metode HEC-18 dalam bentuk aplikasi untuk mendukung analisis yang lebih cepat dan akurat.
Kata kunci: simulasi numerik, pemodelan hidraulika, keamanan jembatan, analisis aliran sungai, analisis fondasi jembatan.
Abstract
Local scour threatens the stability of bridge piers during floods, while manual calculation using the HEC-18 method is slow and prone to errors, especially in areas with high rainfall and strong river currents. This research aims to develop a scour calculation model based on the HEC-18 method to support faster and more accurate analysis. This method is implemented in a Python-based application equipped with 2D and cross-sectional visualizations, making it easier to analyze the impact of scour on bridges more intuitively. The results show that this application not only accelerates the calculation process compared to the manual method but also significantly reduces the potential for human error and provides a more effective and accurate solution in maintaining bridge sustainability. The conclusion is that this research successfully develops a scour calculation model based on the HEC-18 method in the form of an application to support faster and more accurate analysis.
Keywords: numerical simulation, hydraulic modeling, bridge safety, river flow analysis, bridge foundation analysis.
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