https://jurnal.ugm.ac.id/v3/JCEF <p style="text-align: justify;">Journal of the Civil Engineering Forum (JCEF) is a four-monthly journal on Civil and Environmental Engineering related sciences. The JCEF is devoted to publish and disseminate research in the fields of structural engineering, geotechnical engineering, water resources engineering, environmental engineering, transportation engineering, and construction management.</p> <p style="text-align: justify;">The particular emphasis of JCEF is given to the civil &amp; environmental researches associated with disasters caused by natural hazards such as geo-disaster (earthquake, landslide, volcanic eruption), water-related disaster (flood, debris flow, coastal disaster, tsunami), and human-made hazards such as soil, water, and air pollution and water scarcity in a tropical region. Articles describing the topics of disaster risk reduction techniques, disaster early warning system, climate change adaptation, vulnerability analysis and trends, pre and/or post-disaster reconstruction and rehabilitation planning and management, forensic engineering, the socio-engineering approach for the countermeasures, or water reuse and recycle are particularly encouraged.</p> <p style="text-align: justify;">JCEF is open access journal and free of charge for submission, publication, and download. There are three categories of articles published in JCEF: Research Articles, Technical Notes, Editorial Note, and Review Articles. The article consists of 6 - 12 pages, 6 - 10 articles per issue, reviewed by selected peer-reviewers.</p> <p>&nbsp;</p> en-US <p>Copyright is granted to authors for the purpose of providing protection for articles written to describe experiments and their results. JCEF will protect and defend the work and reputation of the author and are also willing to address any allegations of violation, plagiarism, fraud, etc. against articles written and published by JCEF.&nbsp; JCEF is published under the terms of the&nbsp;<a href="http://creativecommons.org/licenses/by-sa/4.0/" target="_blank" rel="noopener">Creative Commons Attribution-ShareAlike 4.0 International License</a>&nbsp;(CC BY-SA 4.0). The author holds the copyright and assigns the journal rights to the first publication (online and print) of the work simultaneously.</p> zudhyirawan@ugm.ac.id (M. Zudhy Irawan) jcef.ft@ugm.ac.id (Agil Satria Yudha) Fri, 29 Aug 2025 16:51:23 +0700 OJS 3.1.2.0 http://blogs.law.harvard.edu/tech/rss 60 https://jurnal.ugm.ac.id/v3/JCEF/article/view/13069 <p>There were many incidents of cold-formed steel roof truss structures in the last 5 years in Indonesia. Various kinds of allegations have been addressed to cold-formed steel material applications especially in the case of seismic resistance. Some of them concern the authenticity of the steel material itself and the selection of cold formed steel material. On the other hand, recently, people have installed (assembled) cold-formed steel trusses without involving a certified cold-formed steel applicator. This research is based on a numerical study that modeled the collapse pattern of cold-formed steel truss roof structures by considering buckling failure and the seismic load capacity. The cold-formed steel roof truss structure was modeled with 3D-truss elements in two model types: the overall structure and a single compression member element in 3D solid idealization. Buckling analysis with eigenvalue and nonlinear static analysis was performed to evaluate the critical load (Pcr). The buckling mode shape also was also compared with the mode shape of modal analysis. This research also evaluated the effect of seismic load on the overall cold-formed steel truss structure and the slenderness of the compression member. The numerical simulation of cyclic loading on the single compression member was conducted in this research. The numerical analysis results showed that cold-formed steel roof truss structure have high vulnerability to seismic hazard effect. The cold-formed steel material has lower ductility than hot rolled steel material. This causes the lateral displacement that occurs to be lower than the displacement produced by the hysteretic curve of numerical cyclic simulation. This research also evaluated the dynamic properties, such as frequency, periods, and mode shapes, of some typical cold-formed steel for roof truss structure.</p> Muslikh, Miftahul Iman Copyright (c) 2025 The Author(s) https://creativecommons.org/licenses/by-sa/4.0 https://jurnal.ugm.ac.id/v3/JCEF/article/view/13069 Fri, 29 Aug 2025 17:06:19 +0700