Eccentrically Braced Frames (EBF) have been used as earthquake suppression systems, especially in buildings. This system relies on yielding at link. EBF with horizontal link has important weaknesses to review. In the event of an earthquake that causes the link beam to rotate vertically, causing the structure above the beam damaged. Also it is not easy to repair the beam link at H-EBF after a severe earthquake. To overcome the problems in the H-EBF system, a new system was proposed, called Vertical-EBF (V-EBF). Links with WF and tubular profiles are two profiles commonly used in structures. In this research, EBF specimen modeling with tubular profile vertical links was compared with EBF horizontal links. The results showed a structure with V-EBF had a lighter weight. Yielding only occur at link so its better for earthquake rehabilitation.Kata kunci: rangka bresing eksentrik, rehabilitasi gempa, metode elemen hingga, kurva histeresis AbstrakEccentrically Braced Frames (EBF) telah digunakan sebagai sistem penahan beban gempa, terutama pada bangunan gedung. Sistem ini mengandalkan pada lelehnya link terlebih dahulu. EBF dengan link horizontal (H-EBF) memiliki kelemahan yang penting untuk ditinjau. Pada saat terjadi gempa bumi yang menyebabkan link balok akan memutar secara vertikal sehingga menyebabkan struktur diatas balok akan rusak. Selain itu tidak mudah memperbaiki link balok di H-EBF setelah gempa bumi yang parah. Untuk mengatasi masalah dalam sistem H-EBF, terdapat sistem yang telah diusulkan, disebut Vertikal-EBF (V-EBF). Link dengan profil WF dan tubular adalah dua profil yang biasa digunakan pada struktur. Pada penelitian ini dilakukan pemodelan spesimen EBF link horizontal dibandingkan dengan EBF dengan link vertikal berprofil tubular. Hasil penelitian menunjukkan struktur dengan V-EBF memiliki berat lebih ringan. Pelelehan pada V-EBF hanya terjadi pada bagian link sehingga lebih baik dalam rehabilitasi gempa.
The shaking of the surface of the Earth is what is known as an earthquake; its effects can span a wide area and cause such damage as to result in the total collapse of buildings. It is essential to improve the construction industry to protect buildings from disaster. However, construction development is costly. Therefore, this article focuses mainly on creating an earthquake-resistant construction model using Virtual Reality (VR), which offers its users new ways to improve knowledge transfer and communication. There were three stages in generating this model: pre-development, development, and post-development. These stages include a needs assessment, planning, initial development, validation, analysis and evaluation, and field testing. In the post-development stage, the model was then tested by civil engineering students, and a statistical analysis was used to evaluate the implementation of VR. The VR was developed to assist civil engineering students while fostering their interest in information technology. The results indicated that the VR-based application had a favorable and significant effect on learning. In addition, the mean score of 17.3 showed an improvement in average score for the VR-based application compared to traditional education. Integration of VR into civil engineering education can statistically improve learning outcomes, particularly regarding the construction of earthquake-resistant buildings.
Concrete needs to use alternative materials to reduce cement content to limit the effect of carbon emissions. Marble dust as a waste of the marble industry has very fine grains. X-Ray Fluorescence (X-RF) method was conducted to determine the mineral properties of marble dust. Marble dust was found to contain 98.62% Calcium Oxide (CaO), 0.17% Sulfur Trioxide (SO3) and some elements in small levels. To determine the impact of marble dust on the mechanical characteristics of concrete, an experimental study was conducted. Test specimens were made with four different levels of marble dust, namely 0%, 5%, 10%, and 15%. The experimental results showed that the optimum usage was 6.62% by weight of cement which gave the advantage of increasing the compressive strength of concrete by 11.77%.
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