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All Journal Civil Engineering Journal Jurnal Aplikasi Teknik Sipil
Sito Ismanti
Department Of Civil And Environmental Engineering, Faculty Of Engineering, Universitas Gadjah Mada, Yogyakarta 55281,
Civil Engineering, Building, Construction & Architecture

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Nonlinear Analysis for Investigating Seismic Performance of a Spun Pile-Column of Viaduct Structure A. Fajar Setiawan; A. Kurniawan Santoso; M. Fauzi Darmawan; Agus Darmawan Adi; Sito Ismanti
Civil Engineering Journal Vol 9, No 7 (2023): July
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2023-09-07-02

Abstract

Slab-on-pile SOP viaducts have been constructed on several highways and railways in Indonesia, but there are certain doubts about some practical structural seismic design concepts. Therefore, this study aims to investigate the seismic performance of a single spun pile column for the SOP viaduct using nonlinear analysis. The essential variables used include the effect of top pile reinforced concrete infill treatment, soil-pile structure interaction (SPSI), and different response modification factors (R). Moreover, the single spun pile column was designed as a macro model with a force-based beam-column element having a fiber section in the plastic hinge. The static pushover analysis and quasi-static cyclic were also conducted to determine the displacement limit state and the equal viscous damping, respectively. Furthermore, seven pairs of ground motion excitations were used to investigate seismic performance in line with ASCE 7-10 and ASCE 61-14. The results showed that the implementation of the top-pile reinforced concrete infill treatment slightly reduced seismic response but evoked more severe pile curvature in the embedded zone. In addition, the behavior and seismic performance were slightly better than those without treatment when considering the SPSI. This study recommends the spun pile column for the SOP viaduct with a response modification factor of 1.5 to avoid probable brittle failure occurrence under earthquake load. Doi: 10.28991/CEJ-2023-09-07-02 Full Text: PDF
Studi Komparatif Tahanan Gesek antara Tiang Terpancang dan Tiang Tertimbun pada Tanah Pasir Pantai I Made Dirgayusa; Sito Ismanti; Ahmad Rifa’i
Jurnal Aplikasi Teknik Sipil Vol. 23 No. 4 (2025)
Publisher : Pusat Publikasi Ilmiah LPPM Institut Teknologi Sepuluh Nopember

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Abstract

The position of foundation pile caps of monument constructed on coastline changed from below to above the soil surface. Therefore, the piles were driven in a free-standing condition and then covered with beach sand soil. This research aims to analyze the frictional resistance of buried pile, then compare it with the frictional resistance of ordinary piles. Practical analysis methods and finite element methods using RS Pile software are compared to obtain a representative method. The comparison results show that the Meyerhof method has the closest soil bearing capacity behavior to the field test results. Based on the results, the skin friction of buried piles is 52% - 57% lower than ordinary piles. This decrease occurred because the assumed value of the angle of friction in the soil was lower because the soil around the pile was not as dense as in ordinary conditions which compacted during the driving process.
Co-Authors A. Fajar Setiawan A. Kurniawan Santoso Agus Darmawan Adi Ahmad Rifa’I I Made Dirgayusa M. Fauzi Darmawan