Indicial Functions for Bridge Aeroelastic Forces and Time-Domain Flutter Analysis

Zhang, Zhitian; Chen, Zhengqing; Cai, Yiyong; Ge, Yaojun

doi:10.1061/(asce)be.1943-5592.0000176

Cited by 36 publications

(18 citation statements)

References 13 publications

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“…As many structural health monitoring systems (SHMSs) are installed in long-span bridges, it is possible to use the two typical stress data resources for fatigue damage assessment, namely, on-site monitoring data from SHMSs and numerical simulations based on WVB dynamic system. Based on the integrating data from numerical simulation and SHMSs installed on Tsing Ma Bridge, Chen et al (2011Chen et al ( , 2012 proposed fatigue reliability analysis approaches to consider multiple dynamic loads from railway, highway, and wind loading. Meanwhile, Wu et al (2012b) proposed a reliability-based fatigue analysis approach, which started with a scenario-based deterministic fatigue analysis model, to consider combined dynamic effects from wind and traffic.…”

Section: Fatigue Reliability Assessment Of Bridges Under Combined Actmentioning

confidence: 99%

“…Along with the advances in construction materials and technologies, the spans of suspension and cable-stayed bridges have been greatly extended to new limits (Holmes 2001), and a high Corresponding author, Professor, E-mail: cscai@lsu.edu number of those long-span bridges are in wind-prone areas. These critical bridges often cross over straits and canyons and support important regional traffic (Kitada 2006, Zhang et al 2011. The complex interaction between vehicles, bridges, and wind plays a significant role in the safety of traffic on these long-span bridges.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A coupled wind-vehicle-bridge system and its applications: a review

Cai¹,

Hu²,

Chen³

et al. 2015

Wind and Structures

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The performance of bridges under strong wind and traffic is of great importance to set the traveling speed limit or to make operational decisions for severe weather, such as controlling traffic or even closing the bridge. Meanwhile, the vehicle"s safety is highly concerned when it is running on bridges or highways under strong wind. During the past two decades, researchers have made significant contributions to the simulation of the wind-vehicle-bridge system and their interactive effects. This paper aims to provide a comprehensive review of the overall performance of the bridge and traffic system under strong wind, including bridge structures and vehicles, and the associated mitigation efforts.

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Section: Fatigue Reliability Assessment Of Bridges Under Combined Actmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A coupled wind-vehicle-bridge system and its applications: a review

Cai¹,

Hu²,

Chen³

et al. 2015

Wind and Structures

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“…Despite the considerable progress made in the modeling of self-excited forces using rational or indicial functions (e.g. Cao and Sarkar, 2012;Caracoglia and Jones, 2003;Chowdhury and Sarkar, 2005;Costa, 2007;Costa and Borri, 2006;Salvatori and Borri, 2007;Zhang et al, 2011;Zhang and Chen, 2010;Øiseth et al, 2011, aerodynamic derivatives, as introduced in bridge engineering by Scanlan and Tomko (1971), remains the most common output from wind tunnel tests of bridges. The aerodynamic derivatives for a bridge cross-section can be determined by either forced or free vibration tests.…”

Section: Introductionmentioning

confidence: 99%

An enhanced forced vibration rig for wind tunnel testing of bridge deck section models in arbitrary motion

Siedziako

Øiseth

Rönnquist

2017

Journal of Wind Engineering and Industrial Aerodynamics

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This paper presents a new experimental setup for the aerodynamic section model testing of bridge decks. The rig is designed to move a section model in arbitrary motion in a wind tunnel to imitate the motions of such scaled real bridge motion, step motion or random motion histories to be close to white noise. The proposed setup enables the forces acting on the section model to be measured directly while considering motions that resemble actual bridge motion and still fully utilizing the benefits of the forced vibration testing technique. The excellent performance of the system and testing procedure is proved by performing state-of-the-art forced vibration tests to extract 18 flutter derivatives of the Hardanger Bridge cross-section. The new experimental setup is further used to simulate a three-degree-of-freedom dynamic system driven by white noise to investigate whether the estimates of the aerodynamic derivatives are sensitive to the motion considered. The experimental results demonstrate that the estimates of the aerodynamic derivatives are not sensitive to the motion considered; these results indicate that the principle of superposition is fully applicable for the cross section as long as the motions are within the range considered.

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“…In order to improve the actual mathematical representation of the flutter phenomenon, a few studies propose the use of nonlinear transient analysis (Caracoglia and Jones, 2003;Chen et al, 2000;Kumarasena, 1990;Scanlan et al, 1974;Zhang et al, 2011). Each time, modal flutter derivatives are extracted and modified, generally using indicial functions, in order to use them in a nonlinear transient analysis.…”

Section: Introductionmentioning

confidence: 99%

“…According to Caracoglia and Jones (2003), the determination of indicial functions for bluff bodies is difficult and even questionable. These functions were shown to be critical by Zhang et al (2011) since they could highly affect the results of the nonlinear transient analysis.…”

Section: Introductionmentioning

confidence: 99%