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All Journal Civil Engineering Journal DINTEK Prosiding Seminar Nasional Teknik Sipil UMS
Armin Aryadi
Sembilanbelas November Kolaka University
Civil Engineering, Building, Construction & Architecture Engineering

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BEHAVIOR OF CASTELLATED STEEL BEAM UNDER CYCLIC LOADS Armin Aryadi
DINTEK Vol 12 No 2 (2019): Dintek Vol 12 No. 2 September 2019
Publisher : Fakultas Teknik UMMU

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Abstract

Kastella steel profiles can be a practical solution in the construction , due to its characteristics which are quite favorable. The research aimed to determine (1) the failure shape of the castella beam, 2) the ability of castellan beam when used as the structural beam element resisting earthquake loads, and (3) the relationship of the behavioral parameters of the beam elements. The research used three types of tested beams made of the steel beams IWF 200 x 100 x 5.5 x 8; one pair of the normal beam (NB), one pair of the castella beam(CB), hexagonal-shape opening angle , the opening height of 0.6 H , the distance openings 9 cm , and the opening angle of 60. The testing used the portal system and loaded with the cyclicloads, in the form of displacement -controlled. The research results revealed that (1) indications failure of the tested beam due to yielding by flexure loads, (2) when compared to the flexure capacities of the NB beams, the increases of the flexure capacities of the CB were 84.36%, their partial displacement of ductility were 6,71, their full displacement of ductility were 6.86 beyond the limits of 5.2, the CB could be used as a structural element of the moment bearer frame system for the earthquake zone; (3) the flexural capacity was in proportion to the partial displacement and full displacement of ductility and inversely in proportion to the stiffness, the stiffness was inversely proportion to the partial displacement and full displacement of ductility. The relationship between these parameters is expressed in the model of equations.
Sifat Fisis dan Mekanis Kayu Bitti pada Struktur Rumah Panggung Bugis-Makassar Armin Aryadi; Herman Parung; Rita Irmawaty; Andi Arwin Amiruddin
Prosiding Seminar Nasional Teknik Sipil UMS 2023: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

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Sistem struktur rumah panggung Bugis-Makassar adalah sistem rangka kayu semi kaku. Pada penelitian ini material objek struktur bangunan panggung yang akan di teliti berasal dari wilayah Kabupaten Bulukumba bagian timur. Semua komponen struktur seperti kolom, balok, struktur atap dan rangka penyangga lantai dan langit-langit terbuat dari material kayu lokal yaitu kayu bitti (Vitex cofassus). Tujuan dari penelitian ini adalah untuk mengetahui sifat fisik dan mekanik kayu Bitti serta menentukan kode mutu berdasarkan SNI 7973:2013. Sifat fisik yang diuji berupa uji kadar air, kerapatan kayu, berat jenis dan modulus elastisitas. Sifat mekanik yang diuji berupa kuat tekan sejajar serat, kuat tekan tegak lurus serat, kuat tarik sejajar serat, kuat tarik tegak lurus serat, dan kuat lentur. Metode penelitian yang digunakan adalah metode eksperimen yang dilakukan di laboratorium sesuai ketentuan SNI maupun peraturan lainnya. Hasil penelitian dari pengujian kadar air kayu, telah menghasilkan nilai 13% - 15% dengan ratarata 14%. Berdasarkan hasil pengujian kerapatan kayu diperoleh nilai berkisar antara 566,4 kg/m³ sampai dengan 793,6 kg/m³ dengan rata-rata 694,7 kg/m³. Dari hasil pengujian berat jenis kayu antara 0,527 % sampai 0,718% dengan rata-rata 0,653%. Kuat Acuan Kayu Bitti berdasarkan seleksi visual untuk Fb 10,07 MPa, Ft 8,90 MPa, Fc// 8,90 MPa, Fv 1,18, Fc⊥ 2,37 MPa, dan kode mutu semuanya berada antara E11-E12. Kuat acuan Kayu Bitti berdasarkan seleksi mekanis adalah Fb 95,40 MPa, Ft// 54,90 MPa, Ft⊥ 3,10 MPa, Fc//40,2 MPa, dan Fc⊥ 88,30 MPa.
Investigation of the Mechanical Behavior of Full-Scale Experimental Bugis-Makassar Timber House Structures Armin Aryadi; Herman Parung; Rita Irmawaty; Andi A. Amiruddin
Civil Engineering Journal Vol 10, No 6 (2024): June
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-06-04

Abstract

The Sulawesi region is located at the confluence of a smaller Philippine plate and three major global plates, namely the Indo-Australian, Pacific, and Eurasian. This strategic location makes Sulawesi and the surrounding earthquake-prone region in Indonesia. Recognizing the seismic vulnerability of this region, various measures, such as the use of houses on stilts, have been explored to enhance earthquake resistance. These structures are designed to avoid direct exposure to seismic energy, according to several reports on Indonesian earthquakes. In the last two years, an in-depth investigation has been carried out to analyze the behavior and resistance of Bugis Traditional Houses to earthquakes. Although simulation and computational studies are still in progress, the results show that Bugis-Makassar House on stilts maintains an elastic state with a high level of performance. Therefore, this study aimed to investigate the mechanical behavior of Bugis-Makassar stilt house structures using full-scale tests. During the investigation, experimental testing was conducted using house specimens measuring 1.5×2.3 m in the laboratory. A cyclic lateral loading analysis was performed using ISO 16670-2003 as a guide. The results showed that cyclic lateral loads caused house structures to sway, while the timber experienced minimal damage. Both the hysteresis energy, EH to EI, and the energy conversion ratio, GPE to ESE (ER), were found to be approximately balanced. This equilibrium suggested that seismic energy can be cyclically stored and released to reduce damage to structural elements. Doi: 10.28991/CEJ-2024-010-06-04 Full Text: PDF
Co-Authors Andi A. Amiruddin Andi Arwin Amiruddin Herman Parung Irmawaty, Rita Parung, Herman Rita Irmawaty