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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.
Optimasi dan Evaluasi Whole Genome Sequencing SARS CoV-2 Di Balai Laboratorium Kesehatan dan Pengujian Alat Kesehatan Provinsi Jawa Tengah Hediningsih, Yekti; Nurhafid, Mohammad; Wahyuni, Endah; Hapsari, Dyah Ayu Kunti; Purnomo, Purnomo; Marwiyah, Marwiyah; Sulistiyanto, Hendrik; Farhati, Ismi; Handayani, Sekti; Peni, Wiwik
Health Information : Jurnal Penelitian Vol 15 No 1 (2023): Januari-April
Publisher : Poltekkes Kemenkes Kendari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36990/hijp.v15i1.706

Abstract

SARS CoV-2 merupakan virus yang menyebar hampir keseluruh Negara di dunia termasuk Indonesia. Whole genome sequencing merupakan metode yang paling tepat digunakan untuk mendeteksi beberapa varian dan mutasi gen dari SARS CoV-2. Tujuan dari penelitian ini yaitu mengetahui dan evaluasi pengerjaan whole genome SARS CoV-2 berdasarkan nilai keberhasilan dan indikator sekuensing di Balai Laboratorium Kesehatan dan Pengujian Alat Kesehatan Provinsi Jawa Tengah. Metode survei digunakan dalam penelitian ini di mana sampel diambil dari beberapa daerah yaitu Jawa tengah, Jawa Barat, Banten dan Jakarta. Analisis keberhasilan didasarkan pada hasil fasta dari analisis Dragen COVID Lineage. Hasil penelitian menunjukan bahwa persentase keberhasilan dari empat batch pengerjaan menunjukkan bahwa dua batch terakhir mendapatkan persentase lebih tinggi dibandingkan dengan dua batch pertama. Primer pool artic yang digunakan yaitu versi V3 dan V4 diduga kuat sebagai faktor yang mempengaruhi keberhasilan tersebut di mana versi V4 menunjukkan performa yang lebih baik dan cocok digunakan dalam pengerjaan whole genome sequencing SARS CoV-2 di Balai Laboratorium Kesehatan dan Pengujian Alat Kesehatan Provinsi Jawa Tengah. Beberapa indikator digunakan sebagai penilaian standar evaluasi yaitu cluster density, passing filter dan Q30 yang disesuaikan dengan instrument yang digunakan.
Pelatihan Pembuatan Lubang Resapan Biopori (LRB) dan Pupuk Cair Limbah Cucian Beras di Desa Wonotirto, Kecamatan Karanggayam, Kabupaten Kebumen Nardiansyah, Afrie; Rahmawati, Aulia; Saputra, Dimas Andi; Septyningsih, Nurmila; Tofik, Akhsan; Musyafa, Nasyith; Wahyuni, Endah; Winarsih, Windu; Syahputra, Dimas Nur Alim; Hayati, Tuti Nur; Anwar, Saeful; Musarofah, Zul
Abdibaraya Vol 3 No 02 (2024): Abdibaraya: Jurnal Pengabdian Masyarakat
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/abdibaraya.v3i02.1291

Abstract

Environmental problems continue to grow and become more complex over time. One of the problems that occurs is the number of puddles on village roads due to increasingly low water absorption space. In this case, based on a survey in Wonotirto Village, another problem arises, namely that waste processing, especially organic waste, is still not maximally utilized. In general, people in Wonotirto Village dispose of organic waste in their yards and burn it. The approach method used to find out the problems in this service activity includes interviews and observations in the field. The training on making biopore infiltration holes (BIH) can be used as a medium for making organic fertilizer. That way this program aims to educate and increase public understanding of groundwater infiltration holes and the use of organic waste for the environment. Community service activities in the form of socialization and training in making Biopore Infiltration Holes (BIH) and utilizing organic waste as fertilizer. The results of the activity were the installation of two biopore infiltration holes at Wonotirto Village Hall and training in making liquid fertilizer from leftover rice washing water. Making Biopore Infiltration Holes (LRB) can increase the amount of water infiltration and get the benefits of organic waste to fertilize the soil. During the rainy season, Biopore Infiltration Holes (BIH) can prevent flooding and can accommodate water sources. Making liquid fertilizer from leftover rice washing water can utilize household liquid waste and save money on fertilizer purchases.
Strategi Peningkatan Pelayanan Light Rail Transit Dalam Integrasi Antar Moda Mewujudkan Transportasi Berkelanjutan Wahyuni, Endah; AR, Hasmawaty,
SEIKO : Journal of Management & Business Vol 6, No 2.1 (2023)
Publisher : Program Pascasarjana STIE Amkop Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37531/sejaman.v6i2.5591

Abstract

This research aims to identify problems and find solutions that can improve the progress of the South Sumatra LRT fast train. By using the SWOT analysis method, we identified the strengths, weaknesses, opportunities and threats facing the South Sumatra LRT. This research method involves collecting primary data through interviews, questionnaires, observations and documentation from South Sumatra LRT employees and high-speed train passengers. The research population included 86 internal employees and 100 external passengers. We used nonprobability sampling techniques with 65 respondents. Data was analyzed using qualitative and quantitative approaches. The research results show that the South Sumatra LRT has made progress in improving the quality of its services. Alternative strategies identified through SWOT analysis involve utilizing competent human resources, maximizing existing infrastructure, utilizing LRT routes more effectively, and needing to improve system management to achieve the set targets. This strategy is expected to help overcome challenges and maximize the potential of the South Sumatra LRT fast train to achieve sustainable transportation. Kata Kunci: light rail transit, transportasi berkelanjutan.
The Influence of Entrepreneurial Orientation on Business Performance is Mediated by Differentiation Strategy and Cost Leadership Strategy in Silver MSMEs in Kotagede Wahyuni, Endah; Sabihaini, Sabihaini; Astuti, Widhy Tri
West Science Business and Management Vol. 3 No. 02 (2025): West Science Business and Management
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsbm.v3i02.1961

Abstract

This study aims to examine and analyze the influence of entrepreneurial orientation on the business performance of silver MSMEs in Kotagede by being mediated by differentiation strategies and cost leadership strategies. The research was conducted at the silver craft center of Kotagede Yogyakarta. The population of this study is all silver MSME actors in Kotagede as many as 45 MSMEs. Sampling uses total sampling. Data collection was carried out through questionnaires and data analysis using SEM-PLS. The results of the study found that entrepreneurial orientation has a positive and significant influence on business performance, differentiation strategy and cost leadership strategy. Differentiation strategies and cost leadership strategies are able to mediate the influence of entrepreneurial orientation on business performance in silver MSMEs in Kotagede. The limitation of this study is on the limited coverage of only one area, namely Kotagede, so the results are not general, besides that this study does not consider other control variables.
OPTIMALKAN ANAK SEHAT DENGAN SCREENING PERKEMBANGAN MENGGUNAKAN APLIKASI KPSP PRO Sutini, Titin; Purwati, Nyimas Heny; Komariah, Elis; Sari, Maya; Kadewi, Ami; Setiawati, Dewi Nur; Lumbatoruan, Astuti; Zein, Jus Yuly Evi Zein; Sari, Denny Novita Mayang; Lestari, Popy; Renhoran, Farida; Nurohmah, Endah; Wahyuni, Endah; Sulistiawati, Reni; Sahureka, Marthine; Maimunah, Ai
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2024): Volume 5 No. 2 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i2.26614

Abstract

Jumlah balita di Indonesia sangat besar yaitu sekitar 10 persen dari seluruh populasi, maka sebagai calon generasi penerus bangsa, kualitas tumbuh kembang balita di Indonesia perlu mendapat perhatian serius yaitu berupa pelayanan kesehatan berkualitas termasuk deteksi dan intervensi dini penyimpangan perkembangan. Guna mendukung upaya deteksi perkembangan anak secara maksimal sangat diperlukan pemanfaatan tehnologi seperti android sehingga informasi semakin mudah diakses hingga ke seluruh pelosok-pelosok penjuru. KPSP (Kuesioner Pra Skrining Perkembangan) Pro merupakan suatu aplikasi dalam pemanfaatan teknologi yang sangat membantu orang tua (masyarakat) untuk memantau perkembangan balita dan mendeteksi adanya kelainan sejak dini. Tujuan pengabdian masyarakat ini adalah meningkatkan kemampuan dan ketrampilan orangtua dalam melakukan penilaian pertumbuhan dan perkembangan berbasis digital menggunakan aplikasi KPSP Mobile di TK Paud Islam Cikal Harapan 1 Cempaka Putih. Metode kegiatan dilakukan berlangsung selama 2 hari dimana hari 1 dilakukan screening Tumbuh dan Kembang pada Anak dan hari ke 2 mengedukasi orang tua siswa tentang Aplikasi KPSP Pro. Selanjutnya demo praktik penggunaan Aplikasi KPSP Pro dalam melakukan penilaian pertumbuhan dan perkembangan. Adapun luaran kegiatan adalah peningkatan kemampuan dan keterampila orangtua dalam melakukan penilaian pertumbuhan dan perkembangan berbasis digital menggunakan Aplikasi KPSP Pro dan terpublikasinya kegiatan pengabdian masyarakat ini di Jurnal Pengabdian Masyarakat yang secara nasional telah terakreditasi.