Abstracts Archive

The wind loads on high-rise buildings can be predicted from the high frequency force balance (HFFB) technique. This experimental technique is widely accepted among wind and structural engineers due to its simplicity and adaptability to obtain wind-induced loads and dynamic responses of tall building...

Overhead electrical transmission line conductors are prone to aeolian vibrations, resulting from the alternate shedding of vortices in the wake of the cable. Aeolian vibrations are characterized by small-amplitude high-frequency flexural oscillations and, whenever not properly controlled, can induce...

Many civil, transport and other engineering structures (chimneys, submarine pipelines, risers, etc) suffer from appearance of vibrations in these systems. It often occurs when the whole structure of its part is an elastic, or elastically mounted rigid bluff body immersed in a fluid flow. The vortice...

A very slender footbridge across the 32 rails of the central main station with a total length of 240 m had been evaluated for aeroeleastic effects. The drag and lift coefficients and the Strouhal number have been evaluated numerically with RANS. To avoid galloping effects, a certain small damping mu...

A wind engineering database specifically for bridges has been built by using Access Database software and Java programming language based on the previous wind tunnel test results of long span bridges. The connection between the underlying database and the foreground application is driven by a local ...

Load-bearing cables in bridges frequently have problems with excessive vortex-induced vibrations, requiring intervention by additional damping devices to reduce vibration amplitudes. This contribution presents results from monitoring of acceleration responses in hangers on the Hålogaland suspension...

High-rise buildings are sensitive to wind-induced vibrations. The occupant comfort under these vibrations is assessed based on the peak acceleration. This peak acceleration is strongly dependent on the natural frequency and the damping of the building. Bronkhorst and Geurts showed that the damping a...

For many tall building forms, habitability requirements associated with excessive acceleration response become a governing design criterion as building heights increase. The application of modular construction methods to high-rise construction is a relatively new concept with limited previous resear...

Single axis solar trackers are constructions characterized by a series of photovoltaic modules mounted on a supporting structure, consisting of a motorized longitudinal torsional shaft and a series of vertical columns. The purpose of the underlying structure is to withstand acting loads and, by chan...

The task group "IABSE TG 3.1 - Super-long span bridge aerodynamics" gathers about twenty engineers specialized in wind engineering. It is equally composed of university researchers, wind tunnel engineers and engineers from design offices. The aim is to compare the results obtained by the different t...

For the modeling of stochastic structural responses due to wind gusts, reasonable assumptions for the aerodynamic admittance are elementary. However, still, a large variety of corresponding models exists, and it lacks validation and reliable model estimation studies based on real-data. In this paper...

Tall buildings inherently have low natural frequencies, excitable by wind loading through buffeting and vortex shedding. Such vibrations can cause discomfort or even fear in the occupants which is a design failure from vibration serviceability standpoint. Current wind-induced vibration serviceabilit...

The climate emergency and potential carbon-positive nature of timber as a construction material are driving the design and construction of multi-storey buildings made entirely or predominantly of timber. However, to the lightweight relatively low stiffness of timber, wind-induced vibrations are beco...

Aeroelastic stability is one of the main concerns in the design of long-span suspension bridges. According to the most widespread formulation, suspension bridges subjected to self-excited aerodynamic load represent a dynamic non-proportionally damped system where both damping and stiffness are affec...

The wind induced vibration of flexible structures is an important topic in the field of wind engineering in terms of human comfort and safety, and of global instability of cable structures. In particular, cable structures used for roofs, for example, cable net and membrane tensile structures, are ve...

The role of atmospheric turbulence in the onset mechanism of bridge aeroelastic instabilities has not been fully understood yet, and it often leads to controversial results. Indeed, concerning torsional and coupled flutter, experimental and numerical results have shown that atmospheric turbulence ma...

Thunderstorms and extra-tropical cyclones provide significantly different wind conditions: extra-tropical cyclones, commonly referred to as Atmospheric Boundary Layer (ABL) winds, provide stationary wind conditions over time intervals of 10 minutes-1 hour and a wind velocity profile increasing with ...

The monumental work of art by Bernar Venet, called ‘Arc Majeur’ wraps the Belgian motorway E411 at Lavaux-Ste-Anne, offering drivers an unmissable landmark in the landscape. This sculpture is a curved steel structure with a height of 60 meters and a 2.25 meters square section. Due to its slende...

Full long-term analysis is the most accurate method to determine extreme buffeting responses in long-span bridges since it considers the variability of the wind turbulence and the variability in the short-term buffeting response which traditionally are neglected. Several authors have reported signif...

Structural monitoring is getting growing attention for system identification, damage identification, and capacity assessments of structures. On the other hand, wind measurement using a network of anemometers has always been a typical feature of meteorological stations. With the growing interest to s...

Aerodynamic derivatives are widely used to model the self-excited forces on bridges and for estimating the corresponding flutter stability. It is currently unclear to which degree the aerodynamic derivatives of a cross section depend on the presence of turbulence in a flow, however it is believed to...

Wind energy plays an increasingly important role in promoting renewable energy development. Therefore, much focus has been naturally given to wind turbines under working conditions. Meanwhile, a standstill condition is another critical state of a wind turbine. When the turbine is at standstill, the ...