Dahai Wang

Dahai Wang
Wuhan University of Technology | WHUT · School of Civil Engineering and Archtechture

Doctor of Philosophy

About

16
Publications
9,655
Reads
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119
Citations
Additional affiliations
September 2015 - September 2016
National Wind Institute
Position
  • Researcher
November 2011 - present
Wuhan University of Technology
Position
  • Professor (Associate)
October 2010 - October 2016
Wuhan University of Technology
Position
  • Professor (Associate)

Publications

Publications (16)
Article
In order to reduce the estimation uncertainty for the wind energy output, the accurate assessment of the wind speed distribution plays an important role. Due to the influence of the complex terrain, the wind speed data in mountainous area may show the heavy tail. The tail has an important effect on the annual energy production of the wind turbine b...
Article
Large single-column billboards are vulnerable to wind hazards. The current building codes for the wind-resistant design of single-sided billboard structure is not applicable to multisided billboards. Therefore, there is a need to carry out comprehensive studies of the wind-resistant design of multisided billboards. This paper presents a comprehensi...
Article
Overhead power transmission line systems consisting of long-span conductors and high rise towers are wind-sensitive structures featured with significant structural nonlinearity and fragility under wind hazards. To assess wind-induced structural fragility of a transmission tower, a novel efficient quasi-static approach, which is based on the analyti...
Article
Wind tunnel studies are conducted to investigate the wind load effect of a representative single-column-supported two-plate billboard structure. Firstly, synchronous pressure measurement on the billboard of a rigid model in wind tunnel is carried out. The alongwind, acrosswind and torsional loads at different wind directions are analyzed. Simplifie...
Article
This paper addresses analysis of dynamic buffeting response of a hinged transmission line (conductor) under nonstationary wind excitations. The nonstationary wind speed is characterized by deterministic time-varying mean and stochastic fluctuating components. The wind load on the conductor is quantified using quasi-steady theory. The wind-induced r...
Article
This study addresses the estimation of buffeting response of overhead conductor based on random vibration theory with closed-form formulations. Special attention is placed on the determination of static deformation with consideration of geometric nonlinearity, and its influence on the dynamic modal properties, aerodynamic modal damping and buffetin...
Article
Full-text available
This paper presents a wind tunnel study of wind loads of the large billboard structures with two-plate and three-plate configurations. Synchronous dynamic pressures on the surfaces of plates are measured, and the characteristics of local pressures, integrated forces on each individual plate and on the overall structures are investigated. The influe...
Article
Full-text available
Using synchronous surface pressures from the wind tunnel test, the three dimensional wind load models of high-rise buildings are established. Furthermore, the internal force responses of symmetric high-rise buildings in along-wind, across-wind and torsional directions are evaluated based on mode acceleration method, which expresses the restoring fo...
Article
Full-text available
Dynamic tension in power transmission lines generated by wind-induced vibrations is a critical issue in the design of wind-resistant power transmission towers. Wind-induced vibrations in transmission lines exhibit nonlinear geometric characteristics Using the vibration equation for a continuous cable system, the dynamic tension generated in a trans...
Article
Based on a practical vertical irregularity structure beyond codes limits, general FEM software ANSYS was used to perform nonlinear time history analysis on the three-dimensional model, the dynamic response of whole structure and damage severity of key structure members were studied. The results showed that maximal story drift was below the limit va...
Article
Full-text available
The mode-acceleration method is applied to analyze the random internal force responses of buildings induced by along-wind. The frequency domain solution in terms of restoring forces consists of quasi-static item and inertia item. A new along-wind static equivalent load based on internal forces is deduced accordingly. Its precision and validity are...
Article
The wind-induced dynamic tension in transmission lines is one of the key issues in wind resistant design of power transmission towers. As a type of flexible structure, the wind induced vibration of transmission lines exhibits typical nonlinear characteristic with large displacements and small strains. Based on vibration equation of a continuous sus...

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