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Journal : Jurnal Ilmiah Rekayasa Sipil

Analisis Komparatif Daya Dukung Tanah & Penurunan Pondasi Menggunakan Metode Analitis Dan Metode Elemen Hingga (Studi Kasus : Borehole 1 Proyek Apartment Mega Techno City Di Kota Batam) Valerianus Kevin Mauthonic; Jody Martin Ginting
Jurnal Ilmiah Rekayasa Sipil Vol 20 No 2 (2023): Oktober 2023
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v20i2.1007

Abstract

Batam City is a city with high attractiveness for tourists, both local and foreign tourists. In an effort to support and accommodate tourists visiting the city of Batam, the construction of hotels and apartments has been intensively carried out. Due to limited land, the high rise building model is one of the most effective building models to build. To guarantee high rise building performance, it is necessary to plan well in design from a structural point of view. In this case foundation as one of the elements of the structure is also an important part, so it needs to be planned well too. The bearingXcapacity of theXfoundation and the settlement in the foundation areXtwo important things that need to beXconsidered in foundation planning. In this study, an analysis of the bearing capacity of the foundation using the Meyerhof method and the finite elementXmethod (Plaxis 2D) and foundation settlement analysis using the elastic reduction method and the finite elementXmethod (Plaxis 2D) was carried out on the Mega Techno City Apartment construction project in Batam. The results of this analysis are in the form of bearing capacity based on the Meyerhof method is 3.330,8 kN and 3.351,6 kN based on the finite element method, as for the settlement, 53,1 mm is obtained for the elastic settlement method and 9,64 mm for the finite element method, the settlement still meets the SNI 8640 – 2017 standard. Based on these external differences, it can be used as a reference in conservative design.
Analisis Banjir Metode Hidrograf Satuan Sintetis SCS dan Nakayasu DAS Pesung, Batam Tiara Puspita Ayuni; Ade Jaya Saputra; Jody Martin Ginting
Jurnal Ilmiah Rekayasa Sipil Vol 20 No 2 (2023): Oktober 2023
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v20i2.1031

Abstract

Design discharge is discharge with a certain return period which is used as a reference or parameter in a water building construction planning. Calculation of the design discharge can be done by using the synthetic unit hydrograph method. The calculation of the planned discharge using the Nakayasu and SCS-CN synthetic unit hydrographs aims to compare the calculation of the maximum discharge in the Pesung Watershed, Batam. The design discharge analysis was carried out without calibrating with AWLR data (observed flow) due to the unavailability of AWLR data at the study site. Thus, in this study using HDRO (high direct runoff) as a comparison. The purpose of this study is to estimate the magnitude of the design flood discharge in the Pesung Watershed, Batam City. The methods used in this calculation of the flood hydrograph is using an empirical formula, namely SCS Synthetic Unit Hydrograph and Nakayasu. The results of the HDRO calculation analysis show that the largest flood discharge occurs in the Nakayasu synthetic unit hydrograph method with details of the SCS synthetic unit hydrograph method, the peak time (Tp) is obtained at 4.46 hours, with a return period flood discharge of 5 – 50 reaching 215,488 – 584,308 m3/ s. Whereas in the Nakayasu synthetic unit hydrograph method, the peak time (Tp) is obtained at 1.47 hours, with a return period flood discharge of 5 – 50 years reaching 360.526 – 986.535 m³/s.