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COMPARATIVE STUDY OF THEORETICAL AND FIELD DATA ON SOIL SETTLEMENT PLAZA SUMMARECON BANUNG CASE STUDY Aldi Rachman Pamungkas; Moch. Sholeh
Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK) Vol. 7 No. 1 (2026): MARET 2026
Publisher : Jurusan Teknik Sipil Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jos-mrk.v7i1.9212

Abstract

This research investigates the discrepancy between theoretical and actual field settlement in soft clay soils, using the Plaza Summarecon Bandung project as a case study. Soil improvement techniques involving preloading and the installation of Prefabricated Vertical Drains (PVD) and Prefabricated Horizontal Drains (PHD) were applied to accelerate consolidation and enhance soil stability. The objective of this study is to compare theoretical settlement calculations with actual field measurements, identify contributing factors to discrepancies, and propose refinements to the theoretical models. The research method involves collecting soil investigation data, field monitoring data (Settlement Plates), and project construction documentation. Theoretical settlement was calculated using Terzaghi’s one-dimensional consolidation theory and extended with Barron and Hansbo's PVD acceleration models. Field settlement data were analyzed over time to create settlement curves and evaluate actual behavior during the preloading period. Findings show that actual settlement significantly deviates from theoretical predictions. The settlement prediction accuracy for Settlement Plate (SP) 1 is 25.43%, SP-2 is 46.97%, and SP-3 is 94.40%. The deviation is primarily due to incomplete soil investigation data, omission of construction and indirect loads in theoretical models, and inconsistencies in field monitoring. Additionally, differences in PVD patterns (triangular vs. square) affected the time to 90% consolidation, with triangular layouts achieving faster results due to better service area coverage. This study concludes that theoretical models can be refined by incorporating site-specific factors, adhering to standard soil investigation protocols, and improving field monitoring practices. It emphasizes the importance of accurate modeling and continuous instrumentation for ensuring reliable ground improvement in soft soil areas.
PERENCANAAN JEMBATAN BETON BERTULANG PADA JALAN PUSUK-PEMENANG KABUPATEN LOMBOK UTARA Muhammad Huzaifah; Wahiddin Wahiddin; Moch. Sholeh
Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK) Vol. 7 No. 2 (2026): JUNI 2026
Publisher : Jurusan Teknik Sipil Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jos-mrk.v7i2.9702

Abstract

Jembatan Pusuk-Pemenang merupakan infrastruktur transportasi yang direncanakan pada ruas jalan Pusuk-Pemenang, Lombok Utara, Nusa Tenggara Barat, guna mengatasi kepadatan lalu lintas serta meningkatkan konektivitas antara Kota Mataram dan kawasan wisata Lombok Utara. Penelitian ini bertujuan merencanakan dimensi elemen struktur bangunan atas dan bangunan bawah jembatan beton bertulang tipe balok-T, bentang tunggal 24 meter, Kelas A, 2 jalur, menggunakan material fc' = 30 MPa dan fy = 400 MPa. Metode meliputi analisis pembebanan berdasarkan SNI 1725:2016, analisis gempa berdasarkan SNI 2833:2016, serta desain penulangan berdasarkan RSNI T-12-2004, dengan pemodelan dan analisis struktur 3D menggunakan program bantu rekayasa struktur. Hasil perencanaan: (1) plat lantai kendaraan setebal 250 mm dengan tulangan D16-125 mm (tumpuan) dan D13-500 mm (lapangan); (2) gelagar balok-T 600 x 1.800 mm sebanyak 5 buah, tulangan longitudinal D29, sengkang O12-300 mm; (3) abutment tinggi 9 m dengan pondasi tiang pancang diameter 60 cm, 7 pasang per abutment; (4) gaya gempa rencana dengan koefisien respons seismik Cs = 0,283 menghasilkan gaya lateral total 250.147 kg. Seluruh elemen struktur memenuhi persyaratan kekuatan dan keamanan sesuai standar yang berlaku.