Perencanaan Struktur Penahan Tanah dan Pondasi Bangunan pada Proyek XYZ

pradana, Muhammad Alvin Azam (2026) Perencanaan Struktur Penahan Tanah dan Pondasi Bangunan pada Proyek XYZ. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pembangunan kompleks sekolah pada Proyek XYZ di Kabupaten Penajam Paser Utara, Kalimantan Timur dilakukan pada kawasan dengan kondisi topografi berupa lereng sehingga memerlukan pekerjaan cut and fill. Perubahan geometri lereng serta pembebanan bangunan mengakibatkan terjadinya kelongsoran pada beberapa lokasi, khususnya di sekitar Gedung Aula dan Gedung TK, sehingga diperlukan evaluasi stabilitas lereng serta perencanaan struktur penahan tanah dan pondasi yang mampu menjamin keamanan konstruksi. Penelitian ini menggunakan data sekunder berupa hasil penyelidikan tanah Standard Penetration Test (SPT) dan Cone Penetration Test (CPT), data topografi, serta data pembebanan struktur. Analisis stabilitas lereng dilakukan menggunakan metode keseimbangan batas (limit equilibrium method) pada kondisi lereng eksisting, setelah pekerjaan cut and fill, setelah menerima beban bangunan, serta setelah diberikan alternatif perkuatan. Alternatif struktur penahan tanah yang dianalisis meliputi kombinasi geotekstil dengan Geoforce Segmental Retaining Wall (GSRW), geotekstil dengan dinding penahan tanah beton bertulang, dan geotekstil dengan turap baja, sedangkan perencanaan pondasi dilakukan terhadap alternatif pondasi dangkal dan pondasi dalam (bored pile) berdasarkan daya dukung tanah, penurunan, dan kebutuhan struktur bangunan. Hasil analisis menunjukkan bahwa lereng eksisting masih memenuhi persyaratan stabilitas, namun kondisi setelah pekerjaan cut and fill dan pembebanan bangunan menyebabkan beberapa potongan lereng memiliki faktor keamanan di bawah nilai yang dipersyaratkan sehingga memerlukan perkuatan. Berdasarkan hasil evaluasi teknis dan estimasi biaya, alternatif perkuatan yang direkomendasikan mampu meningkatkan stabilitas lereng hingga memenuhi kriteria desain, sedangkan hasil perencanaan pondasi menunjukkan bahwa pondasi dangkal dapat diterapkan pada lokasi dengan daya dukung tanah yang mencukupi, sementara pondasi dalam berupa bored pile direkomendasikan pada area dengan beban struktur yang lebih besar. Perencanaan yang dihasilkan diharapkan dapat menjadi alternatif desain yang aman, efektif, dan ekonomis dalam mendukung keberlanjutan pembangunan Proyek XYZ.

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The construction of the school complex in Project XYZ, located in Penajam Paser Utara Regency, East Kalimantan, is situated on sloping terrain, requiring extensive cut-and-fill operations. Changes in slope geometry and additional structural loads have caused slope instability in several areas, particularly around the Auditorium Building and Kindergarten Building. Therefore, a comprehensive slope stability evaluation and the design of retaining structures and foundations are required to ensure the safety and stability of the construction. This study utilized secondary data, including Standard Penetration Test (SPT) and Cone Penetration Test (CPT) results, topographic data, and structural loading data. Slope stability analyses were performed using the Limit Equilibrium Method (LEM) under existing slope conditions, after cut-and-fill operations, under structural loading, and after implementing various reinforcement alternatives. The retaining structure alternatives evaluated included geotextile combined with a Geoforce Segmental Retaining Wall (GSRW), geotextile combined with a reinforced concrete retaining wall, and geotextile combined with steel sheet piles. In addition, shallow foundations and bored pile foundations were designed based on bearing capacity, settlement, and structural loading requirements. The analysis results indicate that the existing slopes satisfy the required stability criteria; however, cut-and-fill activities and building loads reduce the safety factor of several slope sections below the acceptable limit, necessitating slope reinforcement. Based on the technical evaluation and cost estimation, the recommended reinforcement alternative successfully improves slope stability to meet the design criteria. Furthermore, the foundation design indicates that shallow foundations are suitable for areas with adequate soil bearing capacity, whereas bored pile foundations are recommended for locations subjected to higher structural loads. The proposed design is expected to provide a safe, effective, and economical engineering solution to support the sustainable development of Project XYZ.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Bored Pile, Geotextile, Retaining Structure, Slope Stability, Shallow Foundation, Bored Pile, Geotekstil, Pondasi Dangkal ,Struktur Penahan Tanah, Stabilitas Lereng
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA455.S6 Soil (Materials of engineering and construction) T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization T Technology > TA Engineering (General). Civil engineering (General) > TA760+ Retaining walls T Technology > TA Engineering (General). Civil engineering (General) > TA775 Foundations.
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Alvin Azam Pradana
Date Deposited:	01 Aug 2026 07:23
Last Modified:	01 Aug 2026 07:23
URI:	http://repository.its.ac.id/id/eprint/142725

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