1,720,960 research outputs found
STUDI GAYA DALAM PADA KONSTRUKSI BALOK SEDERHANA DENGAN PEMODELAN BEBAN
Full text linkPengetahuan dasar dari pembelajaran struktur salah satunya adalah mengenal tentang konstruksi balok sederhana. Balok adalah member dari struktur yang menerima gaya arah transversal. Pemahaman terkait balok sederhana merupakan pembelajaran struktur yang penting namun, dianggap sulit dan sering terabaikan. Mempelajari dan memahami struktur memang memerlukan ekstra kerja keras dikarenakan kombinasi dari teknis dan kreatifitas. Oleh karena itu, penelitian ini membahas perilaku konstruksi balok sederhana (KBS) dengan pemodelan beban dan penggambaran diagramnya. Tujuan dari penelitian ini sebagai referensi dari perilaku struktur konstruksi balok sederhana dengan beberapa pembebanan. Perilaku struktur ditunjukkan dengan gaya-gaya reaksi dan gaya-gaya dalam akibat muatan yang bekerja beserta penggambaran diagramnya. Metode penelitian menggunakan deskriptif kuantitatif. Analisis digunakan perhitungan manual dan divalidasi dengan metode elemen hingga aplikasi ETABS. Hasil perhitungan dari reaksi perletakan dengan enam pemodelan beban baik secara manual dan metode elemen hingga signifikan sama. Penggambaran diagram gaya geser pada konstruksi balok sederhana dengan beban terpusat merupakan garis lurus mendatar. KBS yang dikenai beban merata persegi panjang diagram gaya geser merupakan garis lurus miring dan beban merata segitiga merupakan garis lengkung. Penggambaran diagram momen akibat beban terpusat merupakan garis lurus miring. Sedangkan, KBS yang dikenai beban merata persegi panjang, segitiga simetri atau sehadap merupakan garis lengkung. Perbedaan dari perilaku struktur dikarenakan perbedaan beban yang diberikan pada KBS. Hal ini memperlihatkan beban terpusat dan beban merata memberikan pengaruh yang berbeda pada KBS. One basic knowledge of learning structure is knowing about the construction of simple blocks. A beam is a member of a structure that receives transverse directional forces. Understanding simple blocks is essential to learning structures. However, it is considered difficult and often overlooked. Learning and understanding the structure does require extra hard work due to the combination of technique and creativity. Therefore, this study discusses simple beam construction (KBS) behavior by load modeling and diagramming. This study aims to refer to the behavior of simple beam construction structures with some loading. The behavior of the structure is indicated by the reaction forces and the forces in the effect of the working charge, along with the diagram drawing. The research method uses quantitative description. The analysis uses manual calculations and is validated by the finite element method of the ETABS application. The calculation results of the laying reaction with six load modeling manually and the method of finite elements are significantly the same. The drawing of a shear force diagram in a simple beam construction with a concentrated load is a horizontal straight line. KBS is subjected to a uniform load, rectangle, and shear force diagram, a straight line of shear, and the uniform load of the triangle is a curved line. The drawing of the moment diagram due to a concentrated load is a slanted straight line. Meanwhile, KBS that is subjected to a load evenly distributes rectangles, symmetrical triangles, or faces in a curved line. The difference in structural behavior is due to the difference in the burden given to KBS. This shows that centralized and evenly distributed loads have different effects on KB
KAJIAN STUDI ALTERNATIF DESAIN BANGUNAN TERHADAP BEBAN LATERAL PADA BANGUNAN TINGGI
Full text linkABSTRAK. Kondisi tektonik Indonesia terletak pada pertemuan lempeng besar dunia dan kecil, sehingga memberi dampak bahwa wilayah tersebut berpotensi akan sering terjadi gempa. Kota Surabaya dikategorikan sebagai ibukota yang cukup padat, sehingga potensi terjadinya bahaya gempa bumi yang berasal dari sesar Kendeng terbukti aktif serta melakukan pergerakan 5 milimeter per tahun. Menyadari fenomena tersebut merupakan hal yang mutlak sebagai bahan pertimbangan dalam mendisain dan membangun bangunan di wilayah seluruh Indonesia. Sebagai usaha memperkuat pembelajaran terutama pengenalan desain seismik pada mahasiswa Arsitektur, sehingga perlu diteliti prinsip (faktor) yang mempengaruhi desain seismik dengan studi kasus adalah gedung perpustakaan kampus I UINSA, sebagai kajian studi alternatif desain bangunan terhadap ketahanan gedung akibat beban lateral. Metode penelitian adalah deskriptif kuantitatif selanjutnya dianalisis menggunakan software Resist 4,0. Prinsip atau faktor desain seismik yang mempengaruhi pada bangunan bertingkat yaitu, informasi detail konstruksi gedung, rencana lantai (bentuk denah), data seismik (peta wilayah gempa), beban angin, jenis perkuatan struktur dan material yang digunakan baik pada arah X maupun Y, dan informasi terkait konstruksi pondasi. Alternatif pilihan desain seismik terdapat 132 pilihan kombinasi yang dapat digunakan terhadap 12 pilihan jenis perkuatan untuk lateral struktur pada arah X dan Y yang tidak sama masing-masing pada kedua arah tersebut. Pilihan tersebut dapat digunakan pada bangunan studi kasus. Hasil analisis sebagai struktur awal (pembelajaran) yang dapat digunakan oleh mahasiswa Arsitektur maupun Teknik sipil dan hasilnya tidak diperkenankan sebagai hasil desain akhir pada bangunan dilapangan. Kata kunci: beban lateral, gedung bertingkat, desain seismik, tahap awal ABSTRACT. Indonesia's tectonic conditions are located at the confluence of the world's large and small plates, thus giving the impact that the region has the potential for frequent earthquakes. Surabaya is categorized as a relatively dense capital city, so the potential for earthquake hazards from the Kendeng fault is proven active and moves 5 millimeters per year. Realizing this phenomenon is an absolute thing as a material consideration in designing and constructing buildings throughout Indonesia. To strengthen learning, especially the introduction of seismic design to Architecture students, it is necessary to examine the principles (factors) that influence seismic design with a case study of the I UINSA campus library building as an alternative study of building design against building resistance due to lateral loads. The research method is descriptive and quantitative, then analyzed using Resist 4.0 software. Seismic design principles or factors that affect high-rise buildings are detailed information on building construction, floor plans (plan form), seismic data (earthquake area maps), wind loads, types of structural reinforcement, and materials used in both the X and Y directions and information related to foundation construction. Alternative seismic design options 132 combination options can be used against 12 choices of reinforcement types for lateral structures in the X and Y directions, which are not the same in both directions. These options can be used in case study buildings. The results of the analysis as an initial structure (learning) that can be used by students of Architecture and Civil Engineering, and the results are not allowed as the result of the final design of the building in the field. Keywords: lateral load, high rise building, design seismic, preeliminar
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Pengujian Kuat-Lentur Bambu Petung Yang Diawetkan Dengan Metode Perebusan
Full text linkPenggunaan material bambu telah dikenal penggunaannya sejak jaman dahulu. Namun bambu juga dikenal memiliki beberapa kelemahan, diantaranya rentan terhadap serangan rayap dan jamur bila terkena air. Oleh karenanya diperlukan perlakuan khusus untuk memperpanjang usia penggunaan bambu bila hendak digunakan sebagai material konstruksi. Metode pengawetan dengan perebusan adalah salah satu metode baru yang diterapkan dilapangan untuk memenuhi pasokan bambu awet, selain metode Visual Soak Diffusion (VSD) yang cenderung memakan waktu yang lebih lama. Tujuan penelitian ini adalah untuk mengetahui sifat mekanik kuat-lentur bambu Petung dengan metode pengawetan perebusan. Hasil pengujian memperlihatkan peningkatan kuat-lentur bambu yang signifikan (dua puluh persen lebih kuat-lentur) setelah diawetkan dengan metode perebusan, meskipun kadar air dalam bambu meningkat yang berimbas pada potensi serangan jamur. Hal ini dapat diatasi dengan cara menambahkan bahan anti jamur pada larutan pengawetan. Metode pengawetan dengan perebusan ini mampu menjadi alternatif utama pengganti bahan pengawet kimia
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Bambu Sebagai Alternatif Penerapan Material Ekologis: Potensi dan Tantangannya
Full text linkBidang industri konstruksi disinyalir menjadi pelaku kedua dalam menyumbang pemanasan global. Pemakaian bahan material yang tidak dapat diperbaharui dalam jangka waktu tertentu akan habis dan efek yang ditimbulkan merusak lingkungan. Penerapan material ekologis yang merupakan pemenuhan aspek pada konsep green building menjadi topik yang terus dikaji oleh peneliti atau praktisi. Bambu memenuhi kriteria sebagai alternatif penerapan material ekologis. Berbagai potensi bambu baik unsur kekuatan, cepat tumbuh, rendah energi, dan bahan melindungi ekosistem bumi termasuk peningkatan ekonomi. Kendala bambu adalah mulai tergerus oleh perkembangan teknologi modern. Bambu sebagai penopang kehidupan sehari-hari mulai kehilangan identitasnya yang mengakibatkan pasokan material bambu atau keberlangsungan material bambu, perlahan di masyarakat mulai langka/sulit dicari. Oleh sebab itu, material bambu dapat digunakan sebagai material ekologis dengan terobosan dalam hal modernisasi pemanfaatan bambu dalam konteks industri. Dimensi bambu harus dapat mengakomodir kesulitan perancang dalam mendisain bambu. Membangun identitas budaya bambu modern dalam konteks industri. Sehingga, bambu sustainable dengan terjadinya harmoni bahan baku bambu dengan budaya terhadap arus kemajuan teknologi. Dalam rangka mengurangi efek global warming dan terwujudnya kelestarian alam demi generasi mendatan
Kajian Terhadap Variasi Metode dan Bahan Pengawet pada Proses Pengawetan Bambu-Kayu di Indonesia
Full text linkBamboo and wood are natural materials, each of which has a variety of uniqueness. Among its uniqueness is an irreplaceable building material between one another. However, weaknesses are also found in them especially related to termites or powder beetles. To be able to obtain maximum results in the use of these two materials, the preservation process was needed as a special treatment. With a variety of Bamboo preservation techniques, this paper tries to identify and examine various studies and best practices related to the Bambu-kayu preservation method in Indonesia. A qualitative approach was used with literature study techniques, field observations and in-depth interviews with entrepreneurs in preserving bamboo. From the results of the study obtained an illustration that the preservation method carried out depends on the needs of the user. It is also known that 10% Borak Boric concentrate has been able to be a chemical preservative that can be trusted to maximize material age. There should also be research on other preservatives, both chemical ones such as pyrolysis oil from plastic waste, as well as natural ones such as coconut shell liquid smoke and tobacco. Further research can also be focused on the strength of bamboo preserved by the preservation / boiling method. In addition to optimal material service age, it is necessary to consider several other criteria such as the ability to be mass produced / according to industry needs and able to be implemented significantly. Thus, it is expected that preservatives will be obtained that are safe for humans, environmentally friendly, workable and economical
ANALISA KEKUATAN TAHANAN LATERAL SAMBUNGAN KAYU-BETON
Full text linkA prediction of shear resistance using lag screw is required to obtain a reliable design timber connection against lateral forces and to know how failure mode from that connection.In this study, shear resistance was evaluated by taking shear test of the joint to the lateral load by using monotonic loading and analysis model adopted from EYM (European Yield Model). The types of timber used were Toona sureni (specific gravity 0.45), Swietenia mahogany (specific gravity 0.51) and Artocarpus heterophyllus (specific gravity 0.54) and concrete with actual compressive strength of 15.93 MPa. Lag-screw in 8 mm diameter (length 130 mm), washer in 22.8 mm diameter and fischer S14 were also used. The percentages results of shear resistance (5% offset method) between the predictions and experiment were 36,40% until 48,15%. These results showed that shear resistance to predicted equation of EYM was close enough to shear resistance based on the test result
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