The Experts below are selected from a list of 339 Experts worldwide ranked by ideXlab platform
Ahsan Kareem - One of the best experts on this subject based on the ideXlab platform.
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identification of vortex induced vibration of tall building pinnacle using cluster analysis for fatigue evaluation application to Burj Khalifa
Journal of Structural Engineering-asce, 2020Co-Authors: Monica Arul, Ahsan Kareem, Dae Kun KwonAbstract:AbstractPinnacles on top of tall buildings are vulnerable to vortex-induced vibrations (VIVs). These structures may undergo large-amplitude vibrations that can lead to fatigue damage accumulation. ...
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near real time hybrid system identification framework for civil structures with application to Burj Khalifa
Journal of Structural Engineering-asce, 2016Co-Authors: Yanlin Guo, Dae Kun Kwon, Ahsan KareemAbstract:AbstractThis study proposes a near-real-time hybrid framework for system identification (SI) of structures using data from structural health monitoring systems. To account for both stationary/weakly nonstationary response under normal conditions (e.g., extratropical winds and/or ambient excitations) and transient/highly nonstationary response under transient events (e.g., earthquakes, windstorms, or time-varying traffic loadings), a hybrid framework is introduced by integrating a new nonstationary SI scheme based on wavelets in tandem with transformed singular value decomposition, and a robust stationary SI scheme called covariance-driven stochastic subspace identification. Extensive numerical simulations as well as analysis of full-scale data are conducted to evaluate the efficacy of the scheme. To facilitate expeditious and convenient utilization of this framework in a practical application, a web-enabled approach and its workflow concerning measurements of the world’s tallest building, Burj Khalifa, ar...
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smartsync an integrated real time structural health monitoring and structural identification system for tall buildings
Journal of Structural Engineering-asce, 2013Co-Authors: Tracy Kijewskicorrea, Yanlin Guo, Dae Kun Kwon, Ahsan Kareem, Audrey Bentz, Sarah Bobby, Ahmad AbdelrazaqAbstract:AbstractThis study introduces a unique prototype system for structural health monitoring (SHM), SmartSync, which uses the building’s existing Internet backbone as a system of virtual instrumentation cables to permit modular and largely plug-and-play deployments. Within this framework, data streams from distributed heterogeneous sensors are pushed through network interfaces in real time and seamlessly synchronized and aggregated by a centralized server, which performs basic data acquisition, event triggering, and database management while also providing an interface for data visualization and analysis that can be securely accessed. The system enables a scalable approach to monitoring tall and complex structures that can readily interface a variety of sensors and data formats (analog and digital) and can even accommodate variable sampling rates. This study overviews the SmartSync system, its installation/operation in the world’s tallest building, Burj Khalifa, and proof-of-concept in triggering under dual e...
Dae Kun Kwon - One of the best experts on this subject based on the ideXlab platform.
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identification of vortex induced vibration of tall building pinnacle using cluster analysis for fatigue evaluation application to Burj Khalifa
Journal of Structural Engineering-asce, 2020Co-Authors: Monica Arul, Ahsan Kareem, Dae Kun KwonAbstract:AbstractPinnacles on top of tall buildings are vulnerable to vortex-induced vibrations (VIVs). These structures may undergo large-amplitude vibrations that can lead to fatigue damage accumulation. ...
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near real time hybrid system identification framework for civil structures with application to Burj Khalifa
Journal of Structural Engineering-asce, 2016Co-Authors: Yanlin Guo, Dae Kun Kwon, Ahsan KareemAbstract:AbstractThis study proposes a near-real-time hybrid framework for system identification (SI) of structures using data from structural health monitoring systems. To account for both stationary/weakly nonstationary response under normal conditions (e.g., extratropical winds and/or ambient excitations) and transient/highly nonstationary response under transient events (e.g., earthquakes, windstorms, or time-varying traffic loadings), a hybrid framework is introduced by integrating a new nonstationary SI scheme based on wavelets in tandem with transformed singular value decomposition, and a robust stationary SI scheme called covariance-driven stochastic subspace identification. Extensive numerical simulations as well as analysis of full-scale data are conducted to evaluate the efficacy of the scheme. To facilitate expeditious and convenient utilization of this framework in a practical application, a web-enabled approach and its workflow concerning measurements of the world’s tallest building, Burj Khalifa, ar...
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smartsync an integrated real time structural health monitoring and structural identification system for tall buildings
Journal of Structural Engineering-asce, 2013Co-Authors: Tracy Kijewskicorrea, Yanlin Guo, Dae Kun Kwon, Ahsan Kareem, Audrey Bentz, Sarah Bobby, Ahmad AbdelrazaqAbstract:AbstractThis study introduces a unique prototype system for structural health monitoring (SHM), SmartSync, which uses the building’s existing Internet backbone as a system of virtual instrumentation cables to permit modular and largely plug-and-play deployments. Within this framework, data streams from distributed heterogeneous sensors are pushed through network interfaces in real time and seamlessly synchronized and aggregated by a centralized server, which performs basic data acquisition, event triggering, and database management while also providing an interface for data visualization and analysis that can be securely accessed. The system enables a scalable approach to monitoring tall and complex structures that can readily interface a variety of sensors and data formats (analog and digital) and can even accommodate variable sampling rates. This study overviews the SmartSync system, its installation/operation in the world’s tallest building, Burj Khalifa, and proof-of-concept in triggering under dual e...
Ahmad Abdelrazaq - One of the best experts on this subject based on the ideXlab platform.
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smartsync an integrated real time structural health monitoring and structural identification system for tall buildings
Journal of Structural Engineering-asce, 2013Co-Authors: Tracy Kijewskicorrea, Yanlin Guo, Dae Kun Kwon, Ahsan Kareem, Audrey Bentz, Sarah Bobby, Ahmad AbdelrazaqAbstract:AbstractThis study introduces a unique prototype system for structural health monitoring (SHM), SmartSync, which uses the building’s existing Internet backbone as a system of virtual instrumentation cables to permit modular and largely plug-and-play deployments. Within this framework, data streams from distributed heterogeneous sensors are pushed through network interfaces in real time and seamlessly synchronized and aggregated by a centralized server, which performs basic data acquisition, event triggering, and database management while also providing an interface for data visualization and analysis that can be securely accessed. The system enables a scalable approach to monitoring tall and complex structures that can readily interface a variety of sensors and data formats (analog and digital) and can even accommodate variable sampling rates. This study overviews the SmartSync system, its installation/operation in the world’s tallest building, Burj Khalifa, and proof-of-concept in triggering under dual e...
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validating the structural behavior and response of Burj Khalifa synopsis of the full scale structural health monitoring programs
International Journal of High-Rise Buildings, 2012Co-Authors: Ahmad AbdelrazaqAbstract:New generation of tall and complex buildings systems are now introduced that are reflective of the latest development in materials, design, sustainability, construction, and IT technologies. While the complexity in design is being overcome by the availability and advances in structural analysis tools and readily advanced software, the design of these buildings are still reliant on minimum code requirements that yet to be validated in full scale. The involvement of the author in the design and construction planning of Burj Khalifa since its inception until its completion prompted the author to conceptually develop an extensive survey and real-time structural health monitoring program to validate all the fundamental assumptions mad for the design and construction planning of the tower. The Burj Khalifa Project is the tallest structure ever built by man; the tower is 828 meters tall and comprises of 162 floors above grade and 3 basement levels. Early integration of aerodynamic shaping and wind engineering played a major role in the architectural massing and design of this multi-use tower, where mitigating and taming the dynamic wind effects was one of the most important design criteria established at the onset of the project design. Understanding the structural and foundation system behaviors of the tower are the key fundamental drivers for the development and execution of a state-of-the-art survey and structural health monitoring (SHM) programs. Therefore, the focus of this paper is to discuss the execution of the survey and real-time structural health monitoring programs to confirm the structural behavioral response of the tower during construction stage and during its service life; the monitoring programs included 1) monitoring the tower's foundation system, 2) monitoring the foundation settlement, 3) measuring the strains of the tower vertical elements, 4) measuring the wall and column vertical shortening due to elastic, shrinkage and creep effects, 5) measuring the lateral displacement of the tower under its own gravity loads (including asymmetrical effects) resulting from immediate elastic and long term creep effects, 6) measuring the building lateral movements and dynamic characteristic in real time during construction, 7) measuring the building displacements, accelerations, dynamic characteristics, and structural behavior in real time under building permanent conditions, 8) and monitoring the Pinnacle dynamic behavior and fatigue characteristics. This extensive SHM program has resulted in extensive insight into the structural response of the tower, allowed control the construction process, allowed for the evaluation of the structural response in effective and immediate manner and it allowed for immediate correlation between the measured and the predicted behavior. The survey and SHM programs developed for Burj Khalifa will with no doubt pioneer the use of new survey techniques and the execution of new SHM program concepts as part of the fundamental design of building structures. Moreover, this survey and SHM programs will be benchmarked as a model for the development of future generation of SHM programs for all critical and essential facilities, however, but with much improved devices and technologies, which are now being considered by the author for another tall and complex building development, that is presently under construction.
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design and construction planning of the Burj Khalifa dubai uae
Structures Congress 2010, 2010Co-Authors: Ahmad AbdelrazaqAbstract:The Burj Khalifa Project is the tallest structure ever built by man; the tower is 828 meters tall and compromise of 162 floors above grade and 3 basement levels. Early integration of aerodynamic shaping and wind engineering played a major role in the architectural massing and design of this multi-use tower, where mitigating and taming the dynamic wind effects was one of the most important design criteria set forth at the onset of the project design. This paper provides brief description of the tower structural systems, focuses on the key issues considered in construction planning of the key structural components, and briefly outlines the execution of one of the most comprehensive structural health monitoring program in tall buildings.
Yanlin Guo - One of the best experts on this subject based on the ideXlab platform.
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near real time hybrid system identification framework for civil structures with application to Burj Khalifa
Journal of Structural Engineering-asce, 2016Co-Authors: Yanlin Guo, Dae Kun Kwon, Ahsan KareemAbstract:AbstractThis study proposes a near-real-time hybrid framework for system identification (SI) of structures using data from structural health monitoring systems. To account for both stationary/weakly nonstationary response under normal conditions (e.g., extratropical winds and/or ambient excitations) and transient/highly nonstationary response under transient events (e.g., earthquakes, windstorms, or time-varying traffic loadings), a hybrid framework is introduced by integrating a new nonstationary SI scheme based on wavelets in tandem with transformed singular value decomposition, and a robust stationary SI scheme called covariance-driven stochastic subspace identification. Extensive numerical simulations as well as analysis of full-scale data are conducted to evaluate the efficacy of the scheme. To facilitate expeditious and convenient utilization of this framework in a practical application, a web-enabled approach and its workflow concerning measurements of the world’s tallest building, Burj Khalifa, ar...
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smartsync an integrated real time structural health monitoring and structural identification system for tall buildings
Journal of Structural Engineering-asce, 2013Co-Authors: Tracy Kijewskicorrea, Yanlin Guo, Dae Kun Kwon, Ahsan Kareem, Audrey Bentz, Sarah Bobby, Ahmad AbdelrazaqAbstract:AbstractThis study introduces a unique prototype system for structural health monitoring (SHM), SmartSync, which uses the building’s existing Internet backbone as a system of virtual instrumentation cables to permit modular and largely plug-and-play deployments. Within this framework, data streams from distributed heterogeneous sensors are pushed through network interfaces in real time and seamlessly synchronized and aggregated by a centralized server, which performs basic data acquisition, event triggering, and database management while also providing an interface for data visualization and analysis that can be securely accessed. The system enables a scalable approach to monitoring tall and complex structures that can readily interface a variety of sensors and data formats (analog and digital) and can even accommodate variable sampling rates. This study overviews the SmartSync system, its installation/operation in the world’s tallest building, Burj Khalifa, and proof-of-concept in triggering under dual e...
Khaled Alawadi - One of the best experts on this subject based on the ideXlab platform.
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transnational mobilities of the tallest building origins mobilization and urban effects of dubai s Burj Khalifa
European Planning Studies, 2021Co-Authors: Davide Ponzini, Khaled AlawadiAbstract:The media and scholarly descriptions and understandings of the tallest building in the world, namely the Burj Khalifa in Dubai, generally, have been simplified. Either celebrating or condemning it,...
