جستجو در تالارهای گفتگو
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Fundamentals of Bridge Design : Concept of design and modeling منبع بخش اول : Introduction to the course 1._Content_of_the_course.mp4 1.1 CONTENT OF BRIDGE DESIGN COURSE.pdf.pdf بخش دوم : Bridge history 1. Definition of bridge..mp4 2. History of bridges.mp4
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Designing for Bridge Seismic Resiliency with Novel Materials M. Saiid Saiidi فایل پی دی اف در 23 اسلاید منبع @Civilbest,SaiidiM_2PM.pdf
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Investigation of March 15, 2018 Pedestrian Bridge Collapse at Florida International University, Miami, Fl
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Investigation of March 15, 2018 Pedestrian Bridge Collapse at Florida International University, Miami, Fl June 2019 @civilbest - Miami FIU Bridge Collapse 2018 - Report.pdf -
Bridge Failures -Lessons learned هرآنچه که باید در مورد فرو ریزش پلها بدانیم University at Buffalo 2010 فایل پی دی اف در 58 اسلاید منبع فروریزش پل ها .pdf
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Recent technology of prestressed concrete bridges in Japan
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Recent technology of prestressed concrete bridges in Japan Hiroshi Mutsuyoshi & Nguyen Duc Hai Department of Civil and Environmental Engineering, Saitama University, Saitama 338-8570, Japan Akio Kasuga Sumitomo Mitsui Construction Co., Ltd., Tokyo 104-0051, Japan ABSTRACT: Prestressed concrete (PC) technology is being used all over the world in the construction of a wide range of bridge structures. However, many PC bridges have been deteriorating even before the end of their design service-life due to corrosion and other environmental effects. In view of this, a number of innovative technologies have been developed in Japan to increase not only the structural performance of PC bridges, but also their long-term durability. These include the development of novel structural systems and the advancement in construction materials. This paper presents an overview of such innovative technologies on PC bridges on their development and applications in actual construction projects. Some noteworthy structures, which represent the state-of-the-art technologies in the construction of PC bridges in Japan, are also presented. 43.pdf -
Advances in Cable-Supported Bridges Selected Papers, 5th International Cable-Supported Bridge Operator's Khaled Mahmoud 2006 منبع Advances_in_Cable_Supported_Bridges.pdf
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Evaluation of Bridge Damage Data from the Loma Prieta and Northridge, California Earthquakes by Nesrin Basöz and Anne S. Kiremidjian. The John A. Blume Earthquake Engineering Center Department of Civil Engineering Stanford University Stanford, California 94305-4020 Technical Report MCEER-98-0004 June 2, 1998 This research was conducted at Stanford University and was supported by the Federal Highway Administration under contract number DTFH61-92-C-00106. منبع دانلود از پیوست --98-0004.pdf
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Seismic Vulnerability Assessment Of Existing Concrete Highway Iranian Bridges Araliya Mosleh PHD thesis University of Aveiro This report is submitted to the rectory, University of Aveiro, as a PhD project research report, under the scientific supervision of Humberto Varum, Full Professor at the Civil Engineering Department of the University of Porto, cosupervision of José Jara, Full Professor at the Structural Engineering Department of the Universidad Michoacana San Nicolas de Hidalgo, Morelia, Mexico and Mehran Razzaghi, Assistant Professor at the Faculty of Civil Engineering, Islamic Azad University, Qazvin, Iran. منبع دانلود از پیوست Araliya-Mosleh.pdf
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Damage of Road Bridges by 2011 Great East Japan (Tohoku) Earthquake
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Damage of Road Bridges by 2011 Great East Japan (Tohoku) Earthquake K. Kawashima Tokyo Institute of Technology H. Matsuzaki Tohoku University منبع دانلود از پیوست WCEE2012_0683.pdf -
Learning from Earthquakes Bridge Performance in the Mw 9.0 Tohoku, Japan, Earthquake
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Learning from Earthquakes Bridge Performance in the Mw 9.0 Tohoku, Japan, Earthquake of March 11, 2011 منبع دانلود از پیوست East-Japan-Bridge-Performance-web.pdf -
LRFD Design Example for Steel Girder Superstructure Bridge
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LRFD Design Example for Steel Girder Superstructure Bridge FHWA NHI-04-041 December 2003 مثال حل شده و معتبر FHWA در مورد طراحی کامل پل با عرشه دوعنصری تیرهای آی شکل فولادی مطابق آشتو LRFD منبع دانلود از پیوست @sharifstructure_fhwanhi04041_steel.pdf -
منحنی‌های شکنندگی لرزه‌ای تجربی پلها با در نظر گرفتن عدم قطعیت‌های اتفاقی مختلط
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منحنی‌های شکنندگی لرزه‌ای تجربی پلها با در نظر گرفتن عدم قطعیت‌های اتفاقی مختلط مرتضی بسطامی, امیر ملکشاهی یکی از روش‌های ارزیابی لرزه‌ای پلها استفاده از منحنی‌های شکنندگی تجربی است. از اطلاعات خسارت موجود برای برقراری رابطه بین حالت حدی خسارت و مؤلفه‌های حرکت زمین استفاده می‌شود. از آنجا که ویژگی‌های هیچ کدام از حرکت ورودی و مصالح سازه‌ای نمی‌توانند به طور قطع بیان شوند، مطالعات آسیب‌پذیری احتمالاتی با استفاده از روابطی که احتمال خسارت را به صورت تابعی از متغیرهای اتفاقی حرکت زمین و خصوصیات مصالح بیان می‌کنند، انجام می‌شود. این متغیرها عدم قطعیت‌های ذاتی دارند. در این مطالعه متغیرهای اتفاقی مذکور به همراه عدم قطعیت‌های وابسته به صورت مختلط در نظر گرفته شده‌اند. به عنوان مطالعه موردی از اطلاعات خسارت 2768 پل در زلزله‌های 1994 نورتریج و 1995 کوبه و با استفاده از روشی که برای به دست آوردن منحنی‌های شکنندگی تجربی معرفی شده، منحنی‌های شکنندگی پل‌های مورد اشاره، به دست آمده‌اند. Seismic Emperical Fragility Curves of Bridges Considering Composite Inherent Randomness Keywords: Earthquake, Bridge, Experimental Fragility Curve, Composite Inherent Randomness منبع دانلود از پیوست 36-63-1-SM.pdf -
Nonlinear Analysis of Reinforced Concrete Joints with Bond-Slip Effect Consideration in OpenSees
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Nonlinear Analysis of Reinforced Concrete Joints with Bond-Slip Effect Consideration in OpenSees Original Article, C53 Karimi Moridani K. and Zarfam P Journal. Civil Eng. Urban. 3(6):362-367. 2013 ABSTRACT:In this study the effects of bond-slip modelling in reinforced concrete structures based on analytical equations has been investigated. TEE joint from the cap beam to the column at a location connection of the bridge is considered. The work refers, especially to the implementation of reinforcing bars and bond-slip models between steel and concrete in the developed finite element program. In order to assess the bond-slip effect, the OpenSees finite element model of the TEE joint is constructed. CEB-FIP analytical method of bond-slip is considered with nonlinear behaviour parameters from materials. Also, It is performed Nonlinear time history and pushover analysis. Based on analytical equations, the results show that taking into account the bond-slip effects in the reduction of stiffness, ultimate capacity and energy dissipation. Keywords:Bond-Slip model, beam-column connection, OpenSees, Nonlinear analysis, Bridge منبع: [Hidden Content] دانلود: [Hidden Content].,53-362-367.pdf J. Civil Eng. Urban.,53-362-367.pdf -
The Importance of Determining Damage Levels of the Bridges in Non-Linear Dynamic Analysis
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The Importance of Determining Damage Levels of the Bridges in Non-Linear Dynamic Analysis Original Article, C30 Karimi Moridani K, Khodayari R, Asadpour M. Journal. Civil Eng. Urban. 3(4):191-196. 2013 ABSTRACT:During past earthquakes, different modes of damage were observed in bridges; consequently in seismic evaluation of these structures, various Indexes were used to determine vulnerability of the structures against earthquake vibrations. In this paper, damage indexes of structural elements of bridge are introduced and suggested definitions for structure damage state are stated. Then, a three span bridge is analyzed using OpenSees non-linear analysis software, considering three-dimensional model under earthquake load and non-linear behavior. After calculating necessary outcomes of the elements and nodes, damage indexes of damage at the foundations and columns level were measured. The model is able to calculate responses and damage indexes of supports and joints. Using this model, damage level of bridge structure is determined based on tables, which determine necessity of retrofitting. Based on the result, decisions made based on each criterion are compared. The results show that exact specification of damage indexes for the estimation of the vulnerability of structures (bridges here) is very important. Keywords: OpenSees Model, Bridge, Damage levels, Reinforcement, Stiffness منبع: [Hidden Content] دانلود: [Hidden Content].,30-191-196.pdf J. Civil Eng. Urban.,30-191-196.pdf