The Tacoma Narrows Bridge Collapse Revisited

2021 ◽  
Vol 59 (6) ◽  
pp. 491-492
Author(s):  
Kevin Kilty
Keyword(s):  
Bridge Collapse ◽  
Tacoma Narrows Bridge

The Tacoma Narrows Bridge Collapse on Film and Video

2015 ◽  
Vol 53 (8) ◽  
pp. 461-465 ◽  
Author(s):  
Don Olson ◽  
Joseph Hook ◽  
Russell Doescher ◽  
Steven Wolf
Keyword(s):  
Bridge Collapse ◽  
Film And Video ◽  
Tacoma Narrows Bridge

scholarly journals Stability of a suspension bridge with a localized structural damping

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Zayd Hajjej ◽  
Mohammad Al-Gharabli ◽  
Salim Messaoudi
Keyword(s):  
Evolution Equation ◽  
Decay Rate ◽  
Suspension Bridge ◽  
Resonance Phenomenon ◽  
Structural Damping ◽  
Exponential Decay Rate ◽  
Nonlocal Evolution Equation ◽  
Bridge Collapse ◽  
Sudden Transition ◽  
Tacoma Narrows Bridge

<p style='text-indent:20px;'>Strong vibrations can cause lots of damage to structures and break materials apart. The main reason for the Tacoma Narrows Bridge collapse was the sudden transition from longitudinal to torsional oscillations caused by a resonance phenomenon. There exist evidences that several other bridges collapsed for the same reason. To overcome unwanted vibrations and prevent structures from resonating during earthquakes, winds, ..., features and modifications such as dampers are used to stabilize these bridges. In this work, we use a minimum amount of dissipation to establish exponential decay- rate estimates to the following nonlocal evolution equation</p><p style='text-indent:20px;'><disp-formula> <label/> <tex-math id="FE1"> \begin{document}$ u_{tt}(x,y,t)+\Delta^2 u(x,y,t) - \phi(u) u_{xx}- \left(\alpha(x, y) u_{xt}(x,y,t)\right)_x = 0, $\end{document} </tex-math></disp-formula></p><p style='text-indent:20px;'>which models the deformation of the deck of either a footbridge or a suspension bridge.</p>

Tacoma narrows bridge collapse, a demonstration

1977 ◽  
Vol 15 (3) ◽  
pp. 189-189
Author(s):  
Wallace A. Hilton
Keyword(s):  
Bridge Collapse ◽  
Tacoma Narrows Bridge

scholarly journals The Tacoma Narrows Bridge collapse

Physics Today ◽  
2015 ◽  
Vol 68 (11) ◽  
pp. 64-65 ◽  
Author(s):  
Donald W. Olson ◽  
Steven F. Wolf ◽  
Joseph M. Hook
Keyword(s):  
Bridge Collapse ◽  
Tacoma Narrows Bridge

Learning From the Media in the Aftermath of a Crisis: Findings from the Minneapolis Bridge Collapse

2009 ◽  
Vol 3 (4) ◽  
pp. 176-192 ◽  
Author(s):  
Lindsay D. Nelson ◽  
Patric R. Spence ◽  
Kenneth A. Lachlan
Keyword(s):  
Bridge Collapse ◽  
The Media

Bridge collapse

2016 ◽  
pp. 795-815 ◽  
Author(s):  
A.E. Schultz ◽  
A.J. Gastineau
Keyword(s):  
Bridge Collapse

Simulation of Palu IV Bridge Collapse using Near-Fault Ground Motions

2019 ◽  
Author(s):  
Iswandi Imran ◽  
Budi Santoso ◽  
Ary Pramudito ◽  
Muhammad Kadri Zamad
Keyword(s):  
Spatial Variation ◽  
Ground Motions ◽  
Time History ◽  
Seismic Demand ◽  
Fault Line ◽  
Near Fault ◽  
Failure Simulation ◽  
Bridge Collapse ◽  
Pulse Type ◽  
Bridge Bearing

<p>The earthquake near Palu, Sulawesi (Indonesia) on September 28, 2018 with a magnitude of M7.4 was caused by a shallow strike-slip of Palu-Koro fault. The earthquake and the subsequent tsunami have caused the collapse of the Ponulele Bridge (Palu IV Bridge). The steel box bowstring arch bridge was located near-fault regions (within 1,5 km from fault line) that have not been identified during the design process. This bridge may have been damaged by the presence of fling-step pulses in the near-fault pulse-type ground motions that increases the damaging potential of such ground motions. This paper presents the failure simulation of the bridge subjected to the near fault pulse type time history with spatial variation ground motions applied on multiple bridge supports. From the simulation, it is concluded that the near fault effects and the spatial variation of the ground motion have increased significantly the seismic demand on the bridge. This increase causes the failure in the anchorage of the bridge bearing system.</p>

Let the buyer beware: how network structure can enable (and prevent) supply chain fraud

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Scott DuHadway ◽  
Carlos Mena ◽  
Lisa Marie Ellram
Keyword(s):  
Supply Chain ◽  
Network Structure ◽  
Structural Characteristics ◽  
Case Study Research ◽  
Structural Holes ◽  
Content Type ◽  
New Concepts ◽  
Bridge Collapse ◽  
Multiple Case

PurposeSupply chain fraud is a significant global concern for firms, consumers and governments. Evidence of major fraud events suggests the role of supply chain structures in enabling and facilitating fraud, as they often involve several parties in complicated networks designed to obfuscate the fraud. This paper identifies how the structural characteristics of supply chains can play an important role in enabling, facilitating and preventing fraud.Design/methodology/approachThe research follows a theory elaboration approach. The authors build on structural holes theory in conjunction with a multiple case study research design to identify new concepts and develop propositions regarding the role of network structure on supply chain fraud.FindingsThis research shows how structural holes in a supply chain can create advantages for unscrupulous firms, a role we call tertius fraudans, or the cheating third. This situation is exacerbated by structural ignorance, which refers to the lack of knowledge about structural connections in the network. Both structural holes and structural ignorance can create information gaps that facilitate fraud, and the authors propose solutions to detect and prevent this kind of fraud.Originality/valueThis paper extends structural holes theory into the domain of fraud. Novel concepts including tertius fraudans, structural ignorance and bridge collapse are offered, alongside a series of propositions that can help understand and manage structural supply chain fraud.

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