| Penulis/Author |
MUHAMAD FAUZI DARMAWAN (1); Angga Fajar Setiawan, S.T., M.Eng., Ph.D. (2) ; Prof. Ir. Iman Satyarno, M.E., Ph.D. (3); Ir. Ali Awaludin, S.T., M.Eng., Ph.D., IPU., ACPE. (4) |
| Abstrak/Abstract |
At present, infrastructures of Indonesia are developed rapidly to enhance economic growth. One of them is in terms of an elevated structure to support highway and railway infrastructures. Pile-supported slab viaduct (PSSV) with pre-stressed hollow concrete (PHC) piles has been widely used in the development of both infrastructures. The structural configuration just contains a pile as a pier, pile head, and slab. So that, quick construction time and lower cost are amongst the consideration of that type selection. Considering that the Indonesian country is mostly in the earthquake zone, the development of the high seismic performance of PSSV structures becomes a necessity. Previous researches showed that PHC piles without additional treatment have low ductility and energy dissipation. On the other hand, reinforced concrete (RC) columns could achieve medium ductility for a stand-alone seismic lateral resistance. In this study, a seismic performance comparison between PSSV with spun pile column and PSSV with RC bored pile column that designed as a medium ductility concept to be conducted with a numerical model by using OpenSees software. A non-linear beam-column element with hinge and fiber section was adopted to simulate the plastic hinge behavior of the pile element. Cyclic loading following ACI 374.1-05 loading protocol was implemented to quantify structural drift-energy dissipation. Then, to evaluate the seismic performance of the proposed structures, a set of scaled ground motion provided by the Japan Road Association (JRA) was generated. The target acceleration spectra based on SNI 2833-2016, the Indonesia seismic load provision for bridge design, for Kulonprogo, Yogyakarta Province. The result of this study concluded that utilizing RC bored pile as the piers of the PSSV structure could produce higher energy dissipation than the one with PHC pile column under cyclic loading. Also, PSSV structure with RC pile column had a better response against the seismic excitation than the one with the PHC column, even though slightly over the ultimate capacity. However, the PSSV with PHC column had significant over-limit deformation under some ground motion excitation. |
