Failure of Lacey V. Murrow Floating Bridge, Seattle, Washington

Dusenberry, Donald O.; Zarghamee, Mehdi S.; Liepins, Atis A.; Luft, René W.; Kan, Frank W.

doi:10.1061/(asce)0887-3828(1995)9:1(4)

Cited by 5 publications

(5 citation statements)

References 2 publications

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“…The cross section is simplified as a rectangular, which has the width b=8.0m and height h=1.5m. So we give the cross sectional moment of inertia I=bh 3 /12=2.25m 4 . We choose two kinds of materials, aluminum and epoxy resin.…”

Section: Band Gapsmentioning

confidence: 99%

“…As a kind of structure with relatively good flexibility, flexural vibrations caused by vehicles, wind and wave would affect its reliability. Many researches have been done in order to investigate its dynamic behaviors induced by wave, moving loads and other environmental loads [3][4][5][6][7]. The dynamic behaviors and vibration control methods of these widely used structures are constantly concerned.…”

Section: Introductionmentioning

confidence: 99%

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Flexural vibration reduction of phononic crystal floating bridge

Han

Zhang

2015

Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015

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The phononic crystal (PC) concept is introduced to the floating bridge, in order to reduce the flexural vibrations. Four kinds of PC floating bridge models, including the identically hinged and two-component rigid connected, section-hinged, cell-hinged cases are defined. The corresponding structures with the actual available bridge section size are constructed. And the frequency dispersion relations and amplitude frequency responses of these structures are calculated and analyzed. The study shows that, the four kinds of PC floating bridges all have good band gap (BG) properties. Due to the restraints of foundation, the PC floating bridges have the first BGs from 0Hz to the corresponding pivotal frequencies. For the identically hinged and two-component cell-hinged cases, the pivotal frequencies are submerged in the adjacent BGs, so they have wide BGs start from 0Hz. Moreover, compared with the rigid connected case, the existence of hinges helps to obtain wider BGs with stronger attenuation. Finally, we design a combined floating bridge from hinged connecting the identically hinged and two-component cell-hinged cells and realize extended wide BGs.

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Section: Band Gapsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexural vibration reduction of phononic crystal floating bridge

Han

Zhang

2015

Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015

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“…Many important structures in engineering, such as the floating bridges 9–11, railroad tracks 12–14, highway pavements 15–17 and continuously supported pipelines 18–20, could be simplified as a model of beams on an elastic foundation. The dynamic behaviors and vibration control methods of these widely used structures are constantly concerned.…”

Section: Introductionmentioning

confidence: 99%

Free transverse vibration in periodically hinged identical beams on elastic foundations: a single material phononic crystal

Han

Zhang

Jiang

et al. 2013

Physica Rapid Research Ltrs

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Unlike the common phononic crystals (PCs) with different materials, the infinite periodically hinged identical beams on elastic foundations, considered as a special “single material” PC, also have transverse vibration band gaps (BGs). The modified transfer matrix method is proposed to calculate the band structure of this system. The propagation of transverse vibration of such a system with aluminium beams and soil foundation is studied. The results show that the system gives wider BGs than the common PC case at low frequency. The influence of the stiffness of foundation and geometrical parameters is analyzed to obtain a wider first BG. The frequency responses of the 6‐cell periodically hinged aluminium beams (solid line) and common aluminium‐epoxy PC beam (dashed line) on a foundation. The hinged case has wider low BGs with stronger attenuation. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…xvi Figure 2.9 Time histories of maximum deflections due to one-and two-wheel loads (Thambiratnam and Zhuge 1996) Figure 2.10 Plan view of the proposed floating bridge (Seif and Koulaei 2005) 35 Figure 2.11 Cut-away of typical pontoon of Lacey V. Murrow Floating Bridge (Dusenberry et al 1995) Figure 2.12 Structure arrangement of pontoon-type very large floating structure (Fujikubo and Tetsuya 2001) Figure 2.13 Modeling of bridge-vehicle system using single-axle vehicle model (Humar and Kashif 1993) Figure 2.14 Two-axle vehicle model (Humar and Kashif 1993) Figure 2.15 Dynamic response of the bridge to single-and two-axle vehicle loads (Humar and Kashif 1993) .21 Dynamic analysis procedures for bridge and vehicle interaction (Henchi et al 1998) 48 Figure 2.22 Schematic illustration of vehicle-bridge interaction (Yang and Wu 2001)..50…”

Section: List Of Appendices XXXImentioning

confidence: 99%

“…Water getting inside the units of the floating bridge can cause the bridge to fail or sink. Dusenberry et al (1995) Figure 2.11 Cut-away of typical pontoon of Lacey V. Murrow Floating Bridge (Dusenberry et al 1995) Fujikubo and Tetsuya (2001) introduced a model for the structural design of Very Large Floating Structures (VLFS) of several thousand meters long by developing a hierarchical system of structural analysis. The structural analysis for such huge floating structures using the normal procedure of the finite element method encompasses a large number of structural nodes required for reasonable accuracy of the analysis.…”

Section: Analysis and Design Of Floating Bridgesmentioning

confidence: 99%

Dynamic behaviour of short-term floating bridges

Ibrahim¹

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The author has granted a nonexclusive license allowing Library and Archives Canada to reproduce, publish, archive, preserve, conserve, communicate to the public by telecommunication or on the Internet, loan, distribute and sell theses worldwide, for commercial or noncommercial purposes, in microform, paper, electronic and/or any other formats. L'auteur a accorde une licence non exclusive permettant a la Bibliotheque et Archives Canada de reproduire, publier, archiver, sauvegarder, conserver, transmettre au public par telecommunication ou par I'lnternet, preter, distribuer et vendre des theses partout dans le monde, a des fins commerciales ou autres, sur support microforme, papier, electronique et/ou autres formats. Bien que ces formulaires aient inclus dans la pagination, il n'y aura aucun contenu manquant.

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Failure of Lacey V. Murrow Floating Bridge, Seattle, Washington

Cited by 5 publications

References 2 publications

Flexural vibration reduction of phononic crystal floating bridge

Flexural vibration reduction of phononic crystal floating bridge

Free transverse vibration in periodically hinged identical beams on elastic foundations: a single material phononic crystal

Dynamic behaviour of short-term floating bridges

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