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Journal : Borneo Engineering : Jurnal Teknik Sipil

Pemodelan Penurunan Pondasi Struktur Bangunan di Tanah Lunak Kota Banjarmasin Menggunakan Ansys Darmansyah Tjitradi; Eliatun Eliatun; Oktafianus Steven Tjitradi
Borneo Engineering : Jurnal Teknik Sipil Volume 5 Nomor 2 Tahun 2021
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v5i2.1964

Abstract

The soil in Banjarmasin City is of soft clay type having a very low bearing capacity. Hence, it is normal for buildings in this area to have gelam wooden piles as part of the foundation. Foundations based on gelam wooden piles rely on friction which results in the building experiencing differential settlement, tilt, and cracks on the structural elements. This foundation settlement will be modeled using ANSYS software involving fifteen building structural models with brick walls under loads according to SNI 1727:2013 and due to settlement at the support. The modeling aims at understanding the effects of using tie beams on the pattern of structural damage in buildings that experience differential settlement on soft soil. Hasil penelitian menunjukkan bahwa penggunaan tie beam pada pondasi pada tanah lunak berpengaruh terhadap pola kerusakan. Pada tanah keras, ini tidak membawa efek seperti itu tetapi sebaliknya, itu meningkatkan tingkat ketidaktentuan statis struktur. Dalam kasus portal bentang tunggal, pola retakan menyerupai huruf "V" terbalik jika penurunan terjadi pada tumpuan samping. Di portal bentang ganda, di sisi lain, pola retakan dinding bata menyerupai huruf "V" jika penurunan terjadi pada penyangga samping, dan "V" terbalik jika terjadi di antara penyangga.
Desain Praktis Beban Gempa Dasar Untuk Bangunan Di Lahan Basah Kabupaten Banjar Kalimantan Selatan Tjitradi, Darmansyah; Eliatun, Eliatun; Khatimi, Khusnul; Karim, Abdul; Lestari, Della Dwi; Tjitradi, Aeron
Borneo Engineering : Jurnal Teknik Sipil Volume 8 Nomor 2 Tahun 2024
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v8i2.5706

Abstract

Banjar Regency is a regency in the province of South Kalimantan which has an area of 4,688 km² and a population of 580,100 people at the end of 2023. Banjar Regency has a capital city located in Martapura sub-district and is included in the Banjar Bakula metropolitan area candidate. Although the Banjar Regency area is an area with minimal seismic and volcanic activity, it has wetlands/swamps with low bearing capacity/soft soil that has the potential to damage buildings due to the amplification of earthquake vibrations. According to earthquake data, South Kalimantan and Banjar Regency in particular have experienced several earthquakes such as 13-14 February 2024 Banjar Regency (M4.7, M3.3, and M4.1), 18 February 2024 Hulu Sungai Tengah Regency (M3.2) and 02 April 2024 Tabalong (2.8M). This study aims to develop a practical design graph of the basic earthquake load spectrum response at 20 building locations in the sub-districts of Banjar Regency, which is certainly very useful for the wider community, especially construction actors in designing buildings in the wetland areas of Banjar Regency. The results of this study indicate that the design earthquake spectrum response graph for all sub-districts in Banjar Regency has normal behavior, namely the softer the soil conditions or the higher the building risk category, the greater the basic earthquake force that works, and structural design parameters, equations and practical design graphs have been obtained to determine the magnitude of the basic earthquake load (V) based on the weight of the building (W), risk category and site class for Banjar Regency.