UGMUGM

JCEFJCEF

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.

75 cold-formed steel profile does not meet compression member design requirements, exhibiting high vulnerability to buckling failure, particularly in the top chord of roof trusses.Numerical analysis results align with theoretical buckling load calculations, with the 3D-Truss model proving most suitable for buckling behavior analysis.The study highlights the significant impact of seismic loads on cold-formed steel truss structures, emphasizing the need for designs that account for lateral forces to prevent collapse.

Penelitian lebih lanjut perlu dilakukan untuk menginvestigasi perilaku sambungan pada struktur atap baja ringan, dengan fokus pada peningkatan kekuatan dan kemampuan redaman energi untuk mengurangi risiko kegagalan akibat gempa. Selain itu, studi komprehensif mengenai pengaruh variasi material baja ringan terhadap kinerja struktural, termasuk pengujian material dan pemodelan numerik, dapat memberikan wawasan yang lebih baik dalam pemilihan material yang optimal. Terakhir, pengembangan metode analisis yang lebih akurat dan efisien untuk memprediksi perilaku struktur atap baja ringan di bawah beban seismik, seperti penggunaan analisis nonlinear dinamis, akan sangat bermanfaat untuk meningkatkan keandalan dan keamanan desain struktur.

  1. No 6 (2017). 3rd conference civil engineering research iccer view stat click work licensed creative commons... doi.org/10.12962/j23546026.y2017i6No 6 2017 3rd conference civil engineering research iccer view stat click work licensed creative commons doi 10 12962 j23546026 y2017i6
  2. 0. php error encountered severity warning message fopen var cpanel sessions ea php80 ci failed open space... doi.org/10.22214/ijraset.2022.450690 php error encountered severity warning message fopen var cpanel sessions ea php80 ci failed open space doi 10 22214 ijraset 2022 45069
  3. INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT. analisis kekuatan struktur... doi.org/10.25105/cesd.v6i2.18894INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT analisis kekuatan struktur doi 10 25105 cesd v6i2 18894
Read online
File size1.81 MB
Pages10
DMCAReport

Related /

ads-block-test