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Ratih Pujiastuti
Universitas Darul Ulum Islamic Centre Sudirman
Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Analisa Model Hidrologi dan Hidrolika di Area Lereng Kritis Ruas Jalan Patikraja – Rawalo, Banyumas Ratih Pujiastuti; Tenardhy Aryarama Wijaya; Agung Hari Wibowo; Hikmah Monica; Alif Agus Tiyanto
Jurnal Teknik Indonesia Vol 7, No 1 (2026): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v7i1.950

Abstract

This study analyzes the hydrological and hydraulic characteristics of the Patikraja-Rawalo road section in Banyumas Regency, which is adjacent to the Serayu River and is prone to landslides. The main focus is on watershed delineation (DAS), design rainfall determination, flood discharge calculation, floodwater elevation determination, and scour depth. Using historical rainfall data and hydrological modeling (Nakayasu and HEC-HMS) and hydraulic modeling (HEC-RAS 2D), the 50-year design flood discharge is 2,217.80 m³/s and a maximum scour depth of 2.51 m. These results provide a crucial basis for designing retaining walls to ensure road stability.
DISTRIBUSI SEDIMEN PADA WADUK JATIBARANG, KOTA SEMARANG Fitria Maya Lestari; Ratih Pujiastuti; Risdiana Cholifatul Afifah
Jurnal Teknik Indonesia Vol 5, No 2 (2024): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v5i2.662

Abstract

The main issue in the operation of reservoirs is sedimentation. This can lead to silting and affect the reservoir's storage capacity. The distribution of sediments needs to be understood in order to gain an overview of their spread, so that measures can be taken to address sediment-related issues in the Jatibarang Reservoir. The analysis was conducted using sediment data from previous studies, which reported a total sediment volume of 6.64 million m³ over a period of 50 years. Based on topographic data, it was found that the Jatibarang Reservoir is classified as Type III, with a "hill" classification. The analysis results showed that the dimensionless factor F is 0.22, with a relative depth p of 0.53. Based on the sediment distribution analysis of the Jatibarang Reservoir with Empirical Area Reduction Method, it was found that after 50 years of operation, the new zero elevation of the reservoir would be at an elevation of +126.82 m. In comparison with the low water surface elevation at the existing dead storage of the Jatibarang Reservoir, which is at +136 m, it can be concluded that the Jatibarang reservoir can operate according to the planned lifespan and can still function for more than 50 years
Desain Penanganan Longsor Di Ruas Jalan Patikraja – Rawalo KM. 16+900 Kab. Banyumas Agung Hari Wibowo; Ratih Pujiastuti; Tenardhy Aryarama Wijaya; Hikmah Monica; Alif Agus Tiyanto
Jurnal Teknik Indonesia Vol 7, No 1 (2026): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v7i1.938

Abstract

Penelitian ini memfokuskan pada desain teknis dinding penahan tanah sebagai solusi penanganan longsor di Ruas Jalan Patikraja – Rawalo KM. 16+900, Kabupaten Banyumas. Ruas jalan ini, yang merupakan bagian dari Jalur Lintas Selatan Pulau Jawa dengan fungsi Jalan Arteri Primer, berdekatan dengan Sungai Serayu yang berpotensi menyebabkan gerusan. Metodologi meliputi pengumpulan data, analisis hidrologi, hidrolika, sedimentasi, gerusan, serta perancangan awal struktur pelindung. Data penyelidikan tanah, beban lalu lintas, dan karakteristik material digunakan untuk menentukan dimensi, stabilitas, dan perancangan tulangan dinding penahan tanah (DPT) tipe beton bertulang dengan fondasi bored pile. Hasil analisis menunjukkan perlunya fondasi bored pile diameter 60 cm dengan panjang 10 m, disertai tulangan pokok D19-100 pada bagian bawah dinding dan D16-100 pada bagian atas, serta tulangan lentur D22-100 untuk pile cap. Kontrol stabilitas guling, geser, dan daya dukung menjadi krusial dalam memastikan keamanan struktur.
Co-Authors Agung Hari Wibowo Alif Agus Tiyanto Fitria Maya Lestari Hikmah Monica Risdiana Cholifatul Afifah Tenardhy Aryarama Wijaya