Hafis, Muhammad Ikhsan Al (2023) Analisis Kuat Dukung Dan Penurunan Pondasi Tiang Pancang Pada Gedung Kuliah Terpadu Gkt-1 Politeknik Negeri Bengkalis. Other thesis, Universitas Islam Riau.

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Abstract

The campus is one of the educational supporting infrastructure buildings in Bengkalis Regency which consists of three floors. The construction of this lecture building was built using pile foundations. This campus building has problems with the foundation structure which was originally planned to use a borepile foundation, after PDA Test testing it turned out that the results could not withstand the weight of the upper structure of the campus building, in this case a re-planning of the foundation was carried out where the foundation used was a minipile type pile foundation. The author examined this study to determine the strength of support, safe factors, decrease and PDA test results. The research method uses quantitative methods by means of secondary collection in the form of N-SPT data, calendaring, PDA tests, structural drawings, and architectural drawings. For calculation methods using static methods, dynamic and 2D finite element methods. static method analysis uses Meyerhof method, Briaud et al method, and L. Decourt method while dynamic method uses Hiley method and Engineering News-Records method , and 2D finite element method uses axisymmetry with interface. For the analysis of the decline using the method of Poulos and Davis. From the results of this analysis with a maximum load of 179.57 kN at points T2-J13, from the review point, the results of the strong capacity supporting the PDA test obtained amounted to 774.99 kN. So the carrying strength capacity that is close to the PDA test results is the Hiley method (1930) with a value of pole carrying strength capacity of 978.77 kN with a safety factor produced exceeding 2.50. For the results of the decline analysis using the Poulos and Davis method, a decrease of 2.69 mm was obtained, while in the 2D finite element method with an interface of 11.53 mm and a consolidated decrease of 23.83 mm, with a decrease in clearance of 35 mm. Due to safety factors exceeding 2.50 and dips below 35 mm allowed, the pile foundation is declared safe from collapse and subsidence.

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