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Research about development of Automatic Rebar Placement System applied Strut-Tie model is conducted. Existing Structural BIM related research, Rebar Placement on structural member of which stress change linearly is carried out, but in this research, problem of complicated and repeated calculation process of Strut-Tie Design Method, a calculation method to design disturbed region by analyzing the work of precedent researchers, is understood, the following potential problem is being suggested and solution of this problem approached from BIM standpoint is suggested. For the solution of such problems, Automatic Placement of Structural BIM was suggested in this study, and it is considered that if Structural BIM is brought in to when Strut-Tie model design about Deep Beams, a structural member disturbed region, is progressed, time for Structural Document Stage can be saved and especially in the case of design method with complicated design process, the effect is considered to be huge. Furthermore, calculated value, designed in Strut-Tie form that suits stress path through finite element analysis about disturbed region and structural BIM research that reflects this, it would be much efficient in designing disturbed region.
Young-Nam Kim(김영남), Young Sang Cho(조영상), Ji-Hyun Lee(이지현), Jung-Hwan Yoon(윤정환), Danbi Lee(이단비), Han-Ryul Seo(서한률), Jeong-Woo Kim(김정우), Eun-Ji Joo(주은지), Bo-Hyun Kim(김보현), Kwang-Lai Park(박광래), Kye-Hoon Kim(김계훈) 한국토양비료학회 2020 한국토양비료학회 학술발표회 초록집 Vol.2020 No.10
Young-Nam Kim(김영남), Ji-Hyun Lee(이지현), Young Sang Cho(조영상), Jung-Hwan Yoon(윤정환), Danbi Lee(이단비), Han-Ryul Seo(서한률), Jeong-Woo Kim(김정우), Eun-Ji Joo(주은지), Bo-Hyun Kim(김보현), Kwang-Lai Park(박광래), Kye-Hoon Kim(김계훈) 한국토양비료학회 2020 한국토양비료학회 학술발표회 초록집 Vol.2020 No.10
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본 연구는 영어를 외국어로 사용하고 있는 학습자가 Lang-8.com이라고 하는 온라인 친화 공간(affinity space)에서 행하고 있는 활동을 살펴보고 그것이 영어쓰기 활동에 미 치는 영향에 대하여 언어학습의 사회문화적 접근법을 이론적 기반으로 하여 조사하였 다. 인터뷰, 관찰, 영작문 샘플 등 다양한 자료를 분석한 결과, 연구대상자는 온라인 친 화 공간이 제공하는 세 가지 요인, 즉, 첫째, 자아를 나타낼 수 있는 소재를 글감으로 사 용할 수 있는 안전한 학습 공간, 둘째, 사회적 상호작용 및 피드백을 제공해 주는 실질적 인 청중의 존재, 그리고 마지막으로, 서로의 다양한 지식을 공유할 수 있는 협업의 가능 성 등으로 인해 영어쓰기에 대한 강한 흥미와 동기를 갖게 되고 이는 활발한 학습 활동 으로 이어지는 것으로 조사되었다. 이러한 온라인 친화 공간이 제공하는 학습 환경의 특 성을 토대로 오프라인 영어수업에서 학습자들의 동기를 유도할 수 있는 방법에 대해 논 의하였다. The present study investigates how one Japanese female English language learner's participation in an online affinity space, Lang-8.com, influences her engagement with English writing. Sociocultural perspectives on language and literacy are adopted as a theoretical framework to closely examine the participant's literate and social practices in the online space. The analysis of data (e.g., interviews, fieldnotes, and online journal entries) suggests that the participant is fully engaged in L2 writing for three reasons: 1) safe learning environments to use her own lifeworld identities as writing resources; 2) existence of a real audience for social interactions and authentic feedback; and 3) multiple opportunities for collaboration to share various items of knowledge. Based on these findings, this study discusses some of the possible ways to make English language classrooms more motivating and meaningful for English language learners.
Securing the required strength of concrete is critical factor in evaluating stability of structure. An accurate and reasonable estimation influences to construction schedule and quality control. But the tests of cylinders and core samples doesn't represent a whole structure in actuality. So this study is focused on a more accurate estimation using the non-destructive tests, Impact Echo method and SASW method, and artificial neural networks for reliance. Vp and Vr have been achieved in using the non-destructive tests increase as age and there are the relationship between each other Using Artificial neural networks in parallel can give more accurate estimation than using only non-destructive tests.
The purpose of this study is to develop an add-in program between the integrated design platform that can produce physical structural model and structural analysis and design model tool which contains the result of structural analysis and design such as member geometry and internal forces. The developed add-in module is to convert the result of structural analysis and design such as structural geometry and internal forces from the analysis to the integrated design platform and to place rebars. The automatic rebar placement system for mat foundation was carried out and as a result, it turned out to be implemented quickly and accurately by applying information derived through structural design. While users can implement rebar placement modeling by using structural drawings in Tekla Structure but it is hard to implement and time-consuming, time and effort for implementation will be reduced if using the automatic rebar placement system. This development is to increase production and economic efficiency by producing accurate shop drawing in the short period of time and generating the accurate quantity take-off of rebar on the reinforced concrete structures.
Securing the required strength of concrete is critical factor in evaluating stability of structure. An accurate and reasonable estimation influences to construction schedule and quality control. But the tests of cylinders and core samples doesn"t represent a whole structure in actuality. So this study is focused on a more accurate estimation using the non-destructive tests. Impact Echo method and SASW method, and artificial neural networks for reliance. Vp and Vr have been achieved in using the non-destructive tests increase as age and there are the relationship between each other. Using Artificial neural networks in parallel can give more accurate estimation than using only non-destructive tests.
As the social current becomes more diversified and more variable, many necessities are proposed on the financial investment to the existing school facilities and on the improvement of the educational environments. In each step of new construction, extension, maintenance, and mending of the school facilities, most steel-reinforced concrete buildings take too many things to work and are inevitable to proceed the work during the semester, compared to other structural types of the buildings such as steel structures and precast structures, leading to the environmental and safety-related problems. In this paper, the reseawas rch made on the Staggered Truss system, one of the steel structure systems, applying the system to the public school buildings. The Staggered Truss system is suitable to the flexible space of the school building for ‘the 7th Education process' and excellent to the seismic capabilities.
As infrastructures are being deteriorated, non-destructive evaluation of existing structures and construction quality control are increasingly demanded. This paper is to study Flaw detection technique of concrete members using Impact-Echo method. This technique is based on stress wave propagation, Experiments were performed using three types of concrete members that have simulated damages at known locations for tests and analysis. Tests results are evaluated and summarized in this paper.