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RISAnalysis of Long Span Bridge Response to Winds: Building Nexus between Flutter and Buffeting
Publisher: American Society of Civil Engineers
Abstract: In current bridge aeroelastic analysis frameworks, predictions of flutter instability and buffeting response to wind fluctuations are treated as two separate procedures. The flutter instability is analyzed through the ...
Improved Understanding of Bimodal Coupled Bridge Flutter Based on Closed-Form Solutions
Publisher: American Society of Civil Engineers
Abstract: Analysis of an aeroelastic bridge system consisting of the fundamental vertical and torsional modes of vibration offers an expeditious assessment of bridge flutter performance. It also produces valuable insight into the ...
Analysis of Multimode Coupled Buffeting Response of Long-Span Bridges to Nonstationary Winds with Force Parameters from Stationary Wind
Publisher: American Society of Civil Engineers
Abstract: This paper presents a general frequency domain framework for predicting multimode coupled buffeting response of long-span bridges to nonstationary winds. Within this framework, the wind speed field, aerodynamic forces, and ...
Extreme Value Distribution and Peak Factor of Crosswind Response of Flexible Structures with Nonlinear Aeroelastic Effect
Publisher: American Society of Civil Engineers
Abstract: The crosswind response at the vicinity of vortex lock-in wind speed becomes an increasing concern in structural design of super tall buildings and other dynamically sensitive structures. Because of nonlinear aeroelastic ...
Analysis of Alongwind Tall Building Response to Transient Nonstationary Winds
Publisher: American Society of Civil Engineers
Abstract: Transient nonstationary extreme winds such as thunderstorm downbursts are responsible for significant structural damage and failures. This study deals with the frequency domain analysis of alongwind tall building response ...
Erratum for “Extreme Value Distribution and Peak Factor of Crosswind Response of Flexible Structures with Nonlinear Aeroelastic Effect” by Xinzhong Chen
Publisher: American Society of Civil Engineers
Inelastic Performance of High-Rise Buildings to Simultaneous Actions of Alongwind and Crosswind Loads
Publisher: ASCE
Abstract: Current tall building design to ultimate wind loads is based on a linear elastic design framework. The adoption of a performance-based wind design framework for tall buildings explicitly requires evaluation of building ...
Inelastic Response of Base-Isolated Tall Buildings under Nonstationary Winds: Response History Analysis and Statistical Linearization Approach
Publisher: ASCE
Abstract: This study investigated uncoupled crosswind and alongwind responses of base-isolated tall buildings under nonstationary wind excitations. The base isolation system has hysteretic restoring force characteristics represented ...
Refined Process Upcrossing Rate Approach for Estimating Probabilistic Wind Load Effects with Consideration of Directionality
Publisher: American Society of Civil Engineers
Abstract: The process upcrossing rate approach remains one of the most popular methods for the estimation of probabilistic wind load effect with consideration of directionality. The accuracy of this approach depends on the adequacy ...
Efficacy of Tuned Mass Dampers for Bridge Flutter Control
Publisher: American Society of Civil Engineers
Abstract: This paper examines efficacy of tuned mass dampers (TMD) in controlling self-excited motion resulting from negative damping. New optimal TMD parameters are suggested which provide better performance than those suggested ...