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Journal : Jurnal Civil Engineering Study

Alternatif Penanganan Stabilitas Timbunan dan Lereng pada Oprit Jembatan dengan Mortar Busa (Studi Kasus : JU Rel KA Cibitung – Cilincing) Annissa Yoga Prastika; Wahyu Febriyanto; Dewi Indriyana; Bagas Wahyu Adhi; Fatchur Roehman; Faqih, Nasyiin
Jurnal Civil Engineering Study Vol. 5 No. 01 (2025): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v5i01.1286

Abstract

Soft soil is caused by cohesion, a low internal friction angle and high compressibility. If not recognized and investigated it can cause instability and long-term decline that cannot be tolerated. One of the treatments that occurs in soft soil is light backfilling with foam mortar. The aim of this research is to carry out an analysis of the stability of embankments using lightweight materials at the location of bridge embankments in order to predict how much of an impact there will be in reducing settlement and increasing embankment stability. Analysis was carried out using the Finite Element Method with the help of the Plaxis 2D program. The method used in this research is descriptive qualitative, namely research by collecting primary and secondary data from the parameters and variables studied and then analyzing them to draw conclusions. In the results of the analysis using Plaxis Softwere using foam mortar treatment with an embankment slope of 1: 1.5, the results showed that the decline in 1 year was 4 cm (meeting the design criteria), the decline in 10 years was 2.8 cm (meeting the design criteria), apart from that the safety factor using foam mortar was also greater than the design criteria, which means the stability of the slope is safe.
Redesain Jaringan Irigasi Kecamatan Welahan Kabupaten Jepara Muhammad Aksan; Norhidayati; Ariyanto; Susilowati; Bagas Wahyu Adhi; Hendramawat Aski Safarizki
Jurnal Civil Engineering Study Vol. 5 No. 02 (2025): Jurnal Civil Engineering Study
Publisher : Civil Engineering of Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/ces.v5i02.1598

Abstract

Peneltian ini dilakukan di Daerah Irigasi Bakalan Kecamatan Welahan Kabupaten Jepara yang mempunyai luasan 1284,27 hektare. Salah satu saluran sekunder jaringan tersebut mengalami keruntuhan bangunan pada saluran dan sendimentasi limpasan air pada ruas (BWl.1, BWl.2, BWl.3) sehingga penyaluran air ke saluran tersebut mengalami rembesan dan pengurangan. Hal itu dikhawatirkan mengganggu pertumbuhan tanaman areal tersebut karena kekurangan suplai air. Untuk itu perlunya redesain ulang dimensi saluran irigasi pada saluran tersebut. Tujuannya adalah untuk mengetahui kebutuhan air untuk pada tanaman palawija dan tanaman padi , mengetahui kapasitas debit saluran irigasi pada lahan pertanian dengan luasan 208,86 hektare, dan mengetahui dimensi saluran sekunder yang dibutuhkan sebagai acuan pembangunan. Analisis penelitian ini menggunakan data curah hujan, klimatologi, hasil pengukuran lapangan dll. Hasil analisis perhitungan dimensi pada saluran sekunder irigasi welahan ruas (BWl.1) dengan luas 208,86 hektare didapatkan tinggi muka air (h) = 0,75 m, lebar saluran (b) = 1,5 m, tinggi jagaan (W) = 0,20 m , kemiringan talud saluran (V : H) = 1 : 1,5 dan kemiringan dasar saluran (I) = 0,0025533