Polynomial Stability of a Suspension Bridge Model by Indirect Dampings

We consider the dynamics of the first vibrational mode of a suspension bridge, resulting from the coupling between its roadbed (elastic beam) and the hangers, supposed to be one-sided springs which respond only to stretching. The external forcing is due to time-periodic vortices produced by impinging wind on the bridge structure. We have studied some relevant dynamical phenomena in such a system, like periodic and quasiperiodic responses, chaotic motion, and boundary crises. In the weak dissipative limit the dynamics is mainly multistable, presenting a variety of coexisting attractors, both periodic and chaotic, with a highly involved basin of attraction structure.

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Fatigue Assessment of Suspension Bridges Carrying Rail and Road Traffic Based on SHMS

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.2019 ◽

2012 ◽

Vol 204-208 ◽

pp. 2019-2027

Author(s):

Zhi Wei Chen ◽

You Lin Xu ◽

Kai Yuen Wong

Keyword(s):

Road Traffic ◽

Good Condition ◽

Measurement Data ◽

Suspension Bridge ◽

Suspension Bridges ◽

Road Vehicles ◽

Fatigue Assessment ◽

Long Span ◽

Bridge Model ◽

Critical Locations

Many long-span suspension bridges have been built around the world, and many of them carry both of rail and road traffic. Fatigue assessment shall be performed to ensure the safety and functionality of these bridges. This paper first briefly introduces the main procedure of fatigue assessment recommended by British Standard, and then it is applied to the Tsing Ma suspension bridge in Hong Kong. Vehicle spectrum of trains and road vehicles are investigated based on the measurement data of trains and road vehicles recorded by the Structural Health Monitoring System (SHMS) installed on the bridge so that fatigue damage assessment will be more realistic and accurate. Stress influence lines corresponding to railway tracks and highway lanes are established based on a complex finite element bridge model so that an accurate vehicle-induced stress response can be estimated based on them. The fatigue-critical locations for different type of bridge components are identified in terms of the maximum stress range due to a standard train running over the bridge. Finally, the fatigue life at the fatigue-critical locations due to both trains and road vehicles are estimated, and the result indicates the bridge is in very good condition.

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Experimental investigation of the Saaremaa suspension bridge model

Proceedings of the Estonian Academy of Sciences. Engineering ◽

10.3176/eng.2002.2.05 ◽

2002 ◽

Vol 8 (2) ◽

pp. 114

Author(s):

E Kivi ◽

V Kulbach

Keyword(s):

Experimental Investigation ◽

Suspension Bridge ◽

Bridge Model

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Suppression of Coupled Flutter of a Suspension Bridge by Tuned Pendulum Damper. 3rd Report. Suitable Arrangement of Dynamic Dampers by a 3D Bridge Model Analysis.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ◽

10.1299/kikaic.67.2776 ◽

2001 ◽

Vol 67 (661) ◽

pp. 2776-2785

Author(s):

Toru OKADA ◽

Koichi HONKE ◽

Kenichi SUGII ◽

Satoru SHIMADA ◽

Hiroshi MATSUHISA

Keyword(s):

Suspension Bridge ◽

Model Analysis ◽

Bridge Model ◽

Suitable Arrangement

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Interpolation Damage Detection Method on a Suspension Bridge Model: Influence of Sensors Disturbances

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.569-570.734 ◽

2013 ◽

Vol 569-570 ◽

pp. 734-741 ◽

Cited By ~ 4

Author(s):

Marco Domaneschi ◽

Maria Pina Limongelli ◽

Luca Martinelli

Keyword(s):

Damage Detection ◽

Detection Method ◽

Suspension Bridge ◽

Longitudinal Axis ◽

Noise Signal ◽

Damage Scenarios ◽

Spatially Correlated ◽

Bridge Model ◽

Structural Responses ◽

Detection And Localization

In this paper the IDDM (Interpolation Damage Detection Method), recently proposed as a speedy damage detection and localization technique, is applied to the numerical model of a cable suspended bridge derived from the ANSYS model of the Shimotsui-Seto Bridge in Japan (940m length of the main span). The wind excitation is simulated as a spatially correlated process acting in the horizontal direction, transversal to the deck. The bridge is assumed to be monitored by sensors located at the nodes of the model along the longitudinal axis, and recording the absolute acceleration of the bridge deck in the transversal direction Noise in recorded responses can reduce the sensitivity of the method to damage. The influence of noise on the results of the damage detection method is herein investigated by adding a white-noise signal to the structural responses. The mutual relationship between level of noise, intensity of damage and lengths of recorded signals is also investigated with reference to various damage scenarios.

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