Wind-induced tower crane vibration and safety evaluation

The Wind-Induced Vibration Response for Tower Crane Based on Virtual Excitation Method

The Dynamics characteristic of Tower Crane is complicated under the wind excitation which complicates the wind-induced vibration response analysis. The random wind-induced response analysis of tower crane is presented based on finite element method and Virtual Excitation Method. The pulsating wind loads are changed into multiple-point correlation stationary excitation. This papers uses Davenpor...

Wind-induced Vibration Optimal Control for Long Span Transmission Tower-line System

In this paper, tuned mass dampers with optimal parameters for long span transmission tower-line system are investigated. Equations of motion for a structure-TMD system are derived, and the parameters of TMD, stiffness and damping are optimized, respectively. According to a real project, three-dimensional finite element models of both transmission tower and transmission tower-line system are cre...

Analysis of a Tower Crane Accident

Today, steel tower cranes are widely used in the construction sites. In this study, the accident occurred in Turkey in 2006 with the overturning of a tower crane in a construction site and the damage occurred on the nearby buildings due to this accident were taken into consideration. At first, the technical characteristics of the EC-H type tower crane used in that construction and then the reas...

Wind Turbine Tower Resonance

Wind turbine towers are large structures designed to withstand the unique loading conditions imposed on them by the turbine’s nacelle and dynamic forces from the rotating blades. Observations and noise measurements of a particular wind turbine showed high noise levels at approximately 48 Hz, which could not be explained from the usual known potential noise sources. Correlated far field noise me...

Wind-Induced Vibration of Stay Cables