Unbalanced wind buffeting effects on bridges during double cantilever erection stages

Mendes, Paulo de Sousa; Branco, Fernando A.

doi:10.12989/was.2001.4.1.045

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…Dyrbye and Hansen [5], have proposed a method for calculating the maximum yawing moment produced by the wind on a double cantilever bridge (the method also takes into account the dynamic effects of the wind on the bridge when its yaw angle is zero). Mendes and Branco [6], apply the same method to calculate the wind forces on a bridge over the Douro river (Portugal), including the effect of cantilevers bending. Results concerning the variation of the aerodynamic yawing moment with the length of the deck of a cantilever bridge, and the influence on such a yawing moment on different types of end plates simulating the sliding concrete forms located at both ends of the bridge, have recently been published [7].…”

Section: Introductionmentioning

confidence: 99%

The influence of the section shape of box-girder decks on the steady aerodynamic yawing moment of double cantilever bridges under construction

Pindado

Meseguer

Franchini

2005

Journal of Wind Engineering and Industrial Aerodynamics

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The yawing moment acting on the box-girder deck of reinforced concrete bridges constructed using the balanced cantilever method during the erection stage has been experimentally analyzed by testing different types of bridge cross-sections. Experimental results show that the yawing moment coefficient decreases as the bridge decks become streamlined, and that the yawing moment coefficient reaches a maximum when the bridge deck length is nearly twice the deck width.

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Section: Introductionmentioning

confidence: 99%

The influence of the section shape of box-girder decks on the steady aerodynamic yawing moment of double cantilever bridges under construction

Pindado

Meseguer

Franchini

2005

Journal of Wind Engineering and Industrial Aerodynamics

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“…Scanlan [3] presented a theoretic framework for buffeting analysis of incompleted bridges in the erection stage. Mendes et al [4] studied the torsional effects that are induced on bridge piers by unbalanced wind buffeting on the deck during double cantilever erection stages. Schmidt et al [5] developed a new procedure that takes into account all wind effects both on the deck and on the pier to solve the wind resistance of the balanced cantilever construction.…”

Section: Intorductionmentioning

confidence: 99%

“…Fig 4. The displacement history at the end of the cantilever at Pier 13: (a) lateral direction (b) vertical direction…”

mentioning

confidence: 99%

The Wind-Induced Response of High-Pier Long-Span Continuous Rigid Frame Bridge

Zhang

2013

AMR

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The fluctuating wind field is simulated for digital by using the AR method. A three-dimension finite element model of high-pier long-span rigid frame bridge is presented in this paper. Based on this model, the gust-induced static response of the bridge under the longest cantilevered construction stage is computed. By comparing with those of two similar span rigid frame bridges with low piers, the gust-induced response characteristics of the internal force under the bottom of the piers of the high-pier long-span bridges are investigated, which is helpful for the safe design of bridges. The buffeting responses of the bridge under the longest cantilevered construction stage are also calculated in the time domain, taking account of the longitudinal and vertical turbulence action. Through the spectral analysis of the response, the comfort index of Diekemann is obtained. The effects of buffeting response on the workers’ safety under the most unfavorable construction stage are discussed.

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“…In the past decades, considerable work has been done to analyze the wind-induced alongwind dynamic response of structures using the gust response factor approach originally developed by Davenport (Chen and Kareem, 2005; Davenport, 1967, 1995; Dyrbye and Hansen, 1996; Flay et al, 1999; Holmes, 2002; Huang et al, 2013; Kareem, 1985; Kim et al, 2014; Mendes and Branco, 2001; Simiu, 1976; Solari, 1982; Tallin and Ellingwood, 1985; Tumura et al, 2005). Most of these studies analyzed the alongwind structural response only or structural responses in alongwind and crosswind directions separately.…”

Section: Introductionmentioning

confidence: 99%

Wind loads and effects on rigid frame bridges with twin-legged high piers at erection stages

Han

Chen

Hua

et al. 2017

Advances in Structural Engineering

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This article presents a procedure for analyzing wind effects on the rigid frame bridges with twin-legged high piers during erection stages, taking into account all wind loading components both on the beam and on the piers. These wind loading components include the mean wind load and the load induced by the three turbulence wind components and by the wake excitation. The buffeting forces induced by turbulence wind are formulated considering the modification due to aerodynamic admittance functions. The buffeting responses are analyzed based on the coherence of buffeting forces and using finite element method in conjunction with random vibration theory in the frequency domain. The peak dynamic response is obtained by combining the various response components through gust response factor approach. The procedure is applied to Xiaoguan Bridge under different erection stages using the analytic aerodynamic parameters fitted from computational fluid dynamics. The numerical results indicate that the obtained peak structural responses are more conservative and accurate when considering the effect of each loading component on the beam and on the piers, and the roles of different loading components are different with regard to bridge configurations. Aerodynamic admittance functions are source of the important part of the error margin of the analytical prediction method for buffeting responses of bridges, and buffeting responses based on wind velocity coherence will underestimate the results.

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Unbalanced wind buffeting effects on bridges during double cantilever erection stages

Cited by 6 publications

References 5 publications

The influence of the section shape of box-girder decks on the steady aerodynamic yawing moment of double cantilever bridges under construction

The influence of the section shape of box-girder decks on the steady aerodynamic yawing moment of double cantilever bridges under construction

The Wind-Induced Response of High-Pier Long-Span Continuous Rigid Frame Bridge

Wind loads and effects on rigid frame bridges with twin-legged high piers at erection stages

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