빌딩 붕괴를 막아낸 한 대학원생의 질문 скачать в хорошем качестве

빌딩 붕괴를 막아낸 한 대학원생의 질문

건물이 무너진다아아아ㅏㅏㅏ 영상 일부 오디오가 누락되었어서 재업로드합니다! 아래 링크는 영상을 만들며 추가적으로 찾아본 자료와 이야기에 대한 짧은 글 입니다. 칼럼 느낌으로 봐 주시면 감사하겠습니다! 앞으로 매 영상마다 글도 같이 써보려고요. https://cafe.naver.com/yanerd?iframe_... 씨티코프 건설 사진을 유심히 보면, V자 형태의 중간 기둥들 몇개가 여전히 있는 것을 눈치채셨을 수도 있습니다. 이 기둥들은 가새가 휘어져 무너지는 것을 방지하고, 위층의 하중을 지탱하는 데 도움을 줍니다. 하지만 대부분의 중력 하중을 지지하지는 않고있죠. 그래서 하중 전달 경로를 설명하는 다이어그램에서는 이 기둥들을 생략했습니다. 자세한 내용은 이 자료를 참고하세요. https://drive.google.com/file/d/1ODFo... ▀▀▀ 0:00 씨티코프 빌딩이 기둥위에 지어진 이유 4:44 바람하중? 7:49 동조질량감쇠기 11:17 익명의 대학원생 14:00 쿼터링 윈드 18:38 건물이 무너질 확률 20:31 빌딩 보수 방법 25:40 허리케인 엘라가 온다...! 27:00 TMD의 확산 28:36 밝혀지지 않은 그 뒷이야기. ▀▀▀ A big thank you for the incredible people without whom we couldn't have done this! 🖤 To Michael Greenburg, author of The Great Miscalculation, for his insights that really brought the story and its context to life. He gave us a pre-copy of his upcoming book, and it is fantastic: https://ve42.co/Miscalc To Eric Hines for all his help with the technical details, fact-checking, and making sure we got the engineering right. To Michael J. Vardaro for helping us uncover the details of the story and the resources he provided. To Brock Hedegaard for helping us dive deep into the Citicorp structural analysis. Learn the fundamentals of structural analysis on his brilliant channel, ‪@StructuresProfH‬, and see here for his analysis of the citicorp center; • Analyzing the Citicorp Tower: A Structural... To Michele Barbato from UC Davis for his inputs on the load calculations. https://faculty.engineering.ucdavis.e... Matt from ‪@mvvvc‬ for talking us through his wind load analysis. To Prof. Chris Letchford who helped us understand the impact of wind on Citicorp's structure. To DongHun Yeo from NIST for discussing his research about wind effects on buildings similar to citicorp: https://ve42.co/WindLoad Finally, to Team Columbia —who built the epic TMD and ran wind tunnel experiments that made this story come alive. This includes the folks at the Mechanical Engineering Teaching Laboratory (Follow all the cool stuff they’re doing: @mechcu, @columbiaengineering or visit https://teachinglab.me/) Amanda Lombardo, Manager of Instructional Laboratories Daniela Durón García, Assistant Manager of Instructional Laboratories Jorge Casas, Machinist And the amazing seniors from the Columbia Space Initiative: (Support their awesome work here: columbiaspace.org/support-us/, Follow them: @columbiaspaceinitiative) Michael Sheehan Claudio Solano Jessica Bolar Kathryn Lampo ▀▀▀ References: Michael M. Greenburg. The Great Miscalculation via. nyupress.org - https://ve42.co/Miscalc Joe Morgenstern. The Fifty-Nine-Story Crisis via. The New Yorker - https://ve42.co/59Crisis National Academy of Engineering. William LeMessurier-The Fifty-Nine-Story Crisis: A Lesson in Professional Behavior - • William LeMessurier-The Fifty-Nine-Story C... Diane Lee Hartley. Implications of a Major Urban Office Complex: The Scientific, Social and Symbolic Meanings of Citicorp Center via. princeton.edu - https://ve42.co/CitiSymbol Caroline Whitbeck. William LeMessurier: The Fifty-Nine-Story Crisis, A Lesson in Professional Addition References here: https://ve42.co/citiref ▀▀▀ Special thanks to our Patreon supporters: Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, Anton Ragin, Autodidactic Studios, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Dave Kircher, David Johnston, David Tseng, Evgeny Skvortsov, Garrett Mueller, Gnare, gpoly, Greg Scopel, HydrochloRick, Jon Jamison, Juan Benet, Keith England, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Matthias Wrobel, Meekay, meg noah, Michael Krugman, Orlando Bassotto, Paul Peijzel, Richard Sundvall, Sam Lutfi, Tj Steyn, TTST, Ubiquity Ventures, wolfee ▀▀▀ Written and Directed by Sulli Yost Edited by Trenton Oliver Additional Editing by Axel Oliver, James Horsley and Peter Nelson 3D Modeling by Maydelis Anaya Romero Animation by Mike Radjabov, Andrew Neet, Fabio Albertelli, Jakub Misiek, and Emma Wright Illustration by Jakub Misiek, Maria Gusakovich and Cainejan Esperanza Filmed by Sulli Yost, Henry van Dyck, Andrew Abballe, Derek Muller Produced by Sulli Yost, Derek Muller, Casper Mebius, Zoe Heron, Rob Beasley Spence and Tori Brittain Additional research by Geeta Thakur Thumbnail contributions by Ren Hurley and Ben Powell Additional video/photos supplied by Getty Images, Pond5, Axiom Images and Storyblocks Music from Epidemic Sound Translated by Mingi Kwon, CineLingo Dubbed by Mingi Kwon