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      Analisis Stabilitas Dinding Penahan Tanah Tipe Segmental Retaining Wall Terhadap Curah Hujan Di Kota Tangerang

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      Date
      2026
      Jenis/Type
      Skripsi
      Subtype
      Undergraduate Theses
      Author
      Putra, Muhammad Reza
      Erizal
      Putra, Heriansyah
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      Abstract
      Pembangunan jalan tol sebagai bagian dari Proyek Strategis Nasional (PSN) memerlukan dinding penahan tanah (DPT) yang mampu menjaga kestabilan timbunan. Pada salah satu lokasi jalan tol ditemukan pelepasan blok Segmental Retaining Wall (SRW) yang diduga dipengaruhi oleh infiltrasi air hujan. Penelitian ini bertujuan menganalisis pengaruh beban lalu lintas dan infiltrasi curah hujan terhadap stabilitas DPT tipe SRW menggunakan GeoStudio 2012, serta mengevaluasi stabilitas eksternal dan internal struktur. Analisis infiltrasi dilakukan dengan metode Horton dan distribusi hujan menggunakan metode Mononobe. Hasil penelitian menunjukkan bahwa desain DPT memenuhi persyaratan stabilitas berdasarkan SNI 8460:2017. Penambahan beban lalu lintas menurunkan faktor keamanan dari 1,784 menjadi 1,763. Infiltrasi hujan selama tujuh hari meningkatkan derajat kejenuhan tanah dari 83,38% menjadi 85,15%, menurunkan kohesi total dari 30,87 kPa menjadi 23,96 kPa, serta menurunkan sedikit faktor keamanan lereng dari 1,6223 menjadi 1,6212. Dengan demikian, infiltrasi curah hujan memengaruhi tekanan air pori, kohesi tanah, dan faktor keamanan, meskipun DPT tetap memenuhi kriteria stabilitas.
       
      The construction of toll roads as part of Indonesia's National Strategic Projects (PSN) requires retaining walls to maintain embankment stability. At one toll road site, displacement of Segmental Retaining Wall (SRW) blocks was suspected to be caused by rainfall infiltration. This study analyzed the effects of traffic loading and rainfall infiltration on the stability of SRW using GeoStudio 2012 and evaluated its external and internal stability. Rainfall infiltration was estimated using the Horton method, while hourly rainfall distribution was determined using the Mononobe method. The results showed that the SRW design satisfied the stability requirements of SNI 8460:2017. A traffic surcharge reduced the factor of safety from 1.784 to 1.763. Seven days of rainfall infiltration increased the degree of saturation from 83.38% to 85.15%, reduced the total soil cohesion from 30.87 kPa to 23.96 kPa, and slightly reduced the slope factor of safety from 1.6223 to 1.6212. These findings indicate that rainfall infiltration affects pore water pressure, soil cohesion, and the factor of safety, although the retaining wall remains stable.
       
      URI
      http://repository.ipb.ac.id/handle/123456789/177605
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      • UF - Civil and Environmental Engineering [1138]

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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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      UIN Syarif Hidayatullah Institutional Repository
      Universitas Jember Digital Repository