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All Journal IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Teknik Sipil
Endah Wahyuni
Departement Of Civil Engineering, Institut Teknologi Sepuluh Nopember, Surabaya
Civil Engineering, Building, Construction & Architecture Computer Science & IT

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Studi Kelakuan Dinamis Struktur Jembatan Penyeberangan Orang (JPO) Akibat Beban Individual Manusia Bergerak Wahyuni, Endah
Jurnal Teknik Sipil Vol 19, No 3 (2012)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.701 KB)

Abstract

Abstrak. Penelitian ini bertujuan mengetahui pengaruh beban manusia bergerak pada struktur JPO beton dan baja. Manusia sebagai beban dinamis sangat mempengaruhi dalam merencanakan jenis struktur tertentu, seperti stadion, lantai gedung olahraga, atau JPO. Apabila beban manusia tersebut tidak dipertimbangkan sebagai beban dinamis maka dapat menjadi penyebab kegagalan struktur. Dalam studi ini dilakukan pemilihan model beban akibat manusia bergerak dari literature yang ada. Dalam penelitian ini dibatasi hanya pada model beban manusia individu. Dengan menggunakan software SAP2000, pembebanan ini akan dihitung secara dinamis, sehingga akibat orang yang bergerak akan menghasilkan reaksi vertikal dan horisontal serta berubah terhadap waktu. Selanjutnya dilakukan pengujian nilai frequensi alami dari jembatan yaitu pada uji kasus dilakukan JPO beton dan JPO baja di Surabaya. Untuk mode pertama, bentuk getaran dari struktur JPO beton didominasi oleh arah horizontal dengan frekuensi alami 2.75 Hz. Sedangkan untuk struktur JPO baja didominasi oleh arah vertikal dengan frekuensi alami 7.675 Hz. Kedua struktur memiliki nilai frekuensi alami yang memenuhi ketentuan British Standard dan diketahui pula bahwa tidak terjadi resonansi pada struktur JPO akibat beban manusia berjalan. Dengan adanya penelitian ini diharapkan kelakuan dinamis struktur jembatan penyeberangan orang akibat beban manusia yang bergerak bisa lebih dipahami.Abstract. This study aimed to investigate the effect of human-induced dynamic loads on steel and concrete footbridges. The dynamic loads would greatly affect to design of certain types of structures such as stadium, floor for dance or sport, or footbridge. If the kind of loads was not considered in the design as dynamic loads that could be the cause of structural failure. The model of the dynamic loads was found from the existing literature. The human loads were limited to individual model in this study. The dynamic responses of footbridge structures were investigated using SAP2000 and showed that the concrete bridge is less stiff than the steel bridge based on the natural frequencies. The results also showed that the first mode of the concrete footbridge was  dominated by horizontal direction with the natural frequency of 2.75 Hz. While the first mode of the steel footbridge was dominated by the vertical direction with natural frequency of 7.675 Hz. Both structures had the natural frequencies which complied with the British Standard and also found that there was no resonance on both footbridges due to human-induced dynamic loads. From the acquisition of some of the above conclusions, it was expected that the dynamic behavior of the footbridge due to the human dynamic loads could be better understood.
A study on Cold-formed Steel Frame Connection: A review Komara, Indra; Wahyuni, Endah; Suprobo, Priyo
IPTEK The Journal for Technology and Science Vol 28, No 3 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.443 KB) | DOI: 10.12962/j20882033.v28i3.3223

Abstract

This paper is aimed to review the current researches on Cold-formed steel (CFS) structures, particularly for screw connections, welded connections, bolted connections and adhesive connections. Connection presents as a major parameter of the important elements for CFS framing system in order to attain its structural stability. The performance of different CFS connections is well-discussed in order to capture the behaviour of each type of connection. Based on the review assessment, the results highlighted that all types of connections except adhesive connections have shown the proper behaviour that can trigger the change of any design codes. Otherwise, adhesive connection is given several advantages that leads a novelty in the construction technology. Hence it still has some gaps of knowledge that are needed to be filled with comprehensive future researches.
The experimental study of the effect of screw and adhesive connection in the variation of cold-formed roof truss framing system Santoso, Wilman Adi; Suswanto, Budi; Wahyuni, Endah; Komara, Indra
IPTEK Journal of Proceedings Series No 6 (2018): International Conference on Advanced Engineering and Technology (ICATECH) 2018
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2018i6.4874

Abstract

onnections with screws are used extensively to connect cold-formed steel (CFS) structural element, especially in the roof truss framing system. However, these connections cannot be relied upon to transfer loading due to the small thickness plates that result in more slender elements which are susceptible to local or distortional buckling and have low stiffness. Therefore, some improvements are made in this study by adding adhesive as the alternative connection. Three types of roof truss framing system are designed with a different connection, i.e. screw, adhesive and the combination of screw and adhesive. The study aims to investigate the behavior of frames connection through experimental studies with the given static load until the frame structure collapses, with attention to their initial (pre-slip) stiffness, elongation, and load-deformation capacity. As a result, the stiffness of adhesive connection given a lower value than screw connection. It is indicated of the delamination process, that the combination connection implied the better behavior with 50% screw reduction as well as increasing the load-deformation capacity with 69.7 mm, three times higher than the screw connection.
Study of Rapid Visual Screening of Buildings for High Potential Seismic Hazard According to Indonesian Standard Wahyuni, Endah; Aji, Pujo; Budi, Firman
IPTEK Journal of Proceedings Series No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i2.2273

Abstract

This paper presents a study of Rapid Visual Screening (RVS) using FEMA 154 and applied in Indonesia based on SNI 1726. RVS is a method to asses potential earthquake hazard of a building based on visual observation (“sidewalk survey”) of the exterior and interior building if possible, and a Data Collection Form. This study is intended to see how important the RVS of the FEMA 154 can be implemented in Indonesia with a case study at Yogyakarta. The buildings that reviewed were assumed to have the same parameters as mention in FEMA 154 and compatible with SNI 1726 (Indonesian earthquake map). The results from field survey were compared to the numerical analysis. From the case study, it was found that the administration building of ATK Academy, the dormitory building of Ministry of Internal Affairs, the office building of Department of Agriculture, and the educational building of Health Polytechnics have a score more than 2, and the buildings are also declared safe according to SNI 1726.
Dynamic Behaviour of Submerged Floating Tunnels under Seismic Loadings with Different Cable Configurations Wahyuni, Endah; Budiman, Ery; Raka, I Gusti Putu
IPTEK The Journal for Technology and Science Vol 23, No 2 (2012)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v23i2.11

Abstract

The paper presents the dynamic behavior of a Submerged Floating Tunnel (SFT) in the Seribu Archipelago crossing under seismic loadings by using the different cable configurations. The SFT is a tubular structure submerged in the water at a fixed depth, which features several advantages from the structural and environmental impact points of view. In particular, the structural system is suited for waterway crossings in seismicity zones. Its interaction with the water provides additional damping and inertia to the system. To evaluate the SFT structural response of seismic loadings, a response spectrum analyses were carried out, in which the ground multi-support excitation is considered. The investigation of the different cable system configurations were also carried out. Both static and dynamic analyses were carried to find the optimal configuration of the structural system. Although the paper has had a definitive conclusion yet, the results gave useful indications of responses of Submerged Floating Tunnels subjected to earthquake. The SFT with two cable diagonals perpendicular with SFT’s body (called Model C) shows the optimal structural configuration compared with others.
Co-Authors Aji, Pujo Budi, Firman Ery Budiman I Gusti Putu Raka Indra Komara, Indra Priyo Suprobo Santoso, Wilman Adi Siti Nur Rahmah Anwar, Siti Nur Rahmah Suswanto, Budi