New Orleans Levee System Performance during Hurricane Katrina: London Avenue and Orleans Canal South

Ubilla, Javier; Abdoun, Tarek; Sasanakul, Inthuorn; Sharp, M. Keith; Steedman, Scott; Vanadit-Ellis, Wipawi; Zimmie, Thomas F.

doi:10.1061/(asce)1090-0241(2008)134:5(668)

Cited by 44 publications

(7 citation statements)

References 2 publications

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“…Of critical concern are the reasons for the foundationinduced failures of the HPS. Centrifuge studies were performed that demonstrate the loading mechanism involved in the failures Ubilla et al, 2008). The photograph in Fig.…”

Section: Hurricane Protection System (Hps)mentioning

confidence: 99%

Geohazards and large, geographically distributed systems

O’Rourke¹

2010

Géotechnique

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A general classification for scale in geotechnical engineering is used to explore the modelling of large, geographically distributed systems and their response to geohazards. Both component and network performance are reviewed. With respect to components, prototypescale experiments of underground pipeline response to abrupt ground deformation are described, including control of soil properties, soil-pipeline interaction, and performance of high-density polyethylene pipelines. Direct shear (DS) apparatus size is shown to have a significant effect on DS strength, and the most reliable DS device is identified from comparative tests with different equipment. Mohr-Coulomb strength parameters for partially saturated sand are developed from DS test data and applied in finite element simulations of soil-pipeline interaction that show excellent agreement with prototypescale experimental results. Apparent cohesion measured during shear failure of partially saturated sand is caused by suction-induced dilatancy. With respect to networks, the modelling of liquefaction effects on the San Francisco water supply is described, and a case history of its successful application during the Loma Prieta earthquake is presented. The systematic analysis of pipeline repair records after the Northridge earthquake is used to identify zones of potential ground failure, and correlate pipeline damage rates with strong ground motion. Hydraulic network analyses are described for the seismic performance of the Los Angeles water supply, with practical applications for emergency response. The effects of Hurricane Katrina are reviewed with respect to the New Orleans hurricane protection system, Gulf of Mexico oil and gas production, and interaction between electric power and liquid fuel delivery systems. The sustainability of the Mississippi delta is discussed with regard to flood control, maintenance of wetlands and barrier islands, and catastrophic change in the course of the Mississippi River.

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Section: Hurricane Protection System (Hps)mentioning

confidence: 99%

Geohazards and large, geographically distributed systems

O’Rourke¹

2010

Géotechnique

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“…One of the contributions of these investigations was to identify major failure mechanisms. The major work and the findings of these two teams were well documented in IPET (2007) and ILIT (2006) reports, and in a special issue of the ASCE Journal of Geotechnical and Geoenvironmental Engineering (e.g., Brandon et al 2008;Duncan et al 2008;Sasanakul 2008;Seed et al 2008a,b,c,d;Sills et al 2008;Ubilla et al 2008). In these works, numerical analysis was taken as one of the key techniques.…”

Section: Introductionmentioning

confidence: 97%

Anisotropic Analysis of I-Walls in New Orleans

Adhikari

Song

Cheng

2015

Marine Georesources & Geotechnology

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Many numerical analyses of New Orleans levee and floodwall sections adopted mostly isotropic soil models partly due to the inherent simplicity of isotropic models. However, the isotropic models may not be sufficient to properly address the anisotropic behavior of soils. To overcome this imperfection, this study incorporated an anisotropic Modified Cam Clay model in a commercially available finite difference code, FLAC 3D , and analyzed a floodwall and levee section in the 17th St. Canal in New Orleans. The analysis showed that the anisotropic model resulted in a similar overall deformation to the Mohr-Coulomb isotropic model. However, the anisotropic model showed more widely spread yielded elements and higher shear strain gradient in the Lacustrine clay layer, reconfirming that the Lacustrine clay layer played a major role for the failure in the 17th St. Canal. This result also signified that the isotropic Mohr-Coulomb model might be good for evaluating overall behavior in moderate deformation problems, while the anisotropic Modified Cam Clay model was good even for large strain problems where more accurate evaluation of yielding is needed.

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“…The stability of earthen levees has been affected by above-mentioned overtopping flow conditions. For example, during Hurricane Katrina, the levee system that surrounds the New Orleans experienced catastrophic overtopping and extensive damage during the hurricane, leaving roughly 80 % of the city under water (Briaud et al 2008;Ubilla et al 2008). Post-Katrina investigations revealed that most earthen levee damage occurred on the levee crest and land-side slope as a result of either wave overtopping, storm surge overflow, or a combination of both (ASCE 2007).…”

Section: Introductionmentioning

confidence: 99%

Slope Stability Analysis of Earthen Levee Strengthened by High Performance Turf Reinforcement Mat under Hurricane Overtopping Flow Conditions

Amini

2012

Geotech Geol Eng

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The slope stability of levees during hurricane overtopping conditions involving storm surge and wind generated wave action is an important aspect to assess the safety of earthen levees. A comprehensive slope stability investigation was conducted in this study for an earthen levee subjected to full-scale overtopping scenarios, including storm surge only overflow, wave only overtopping, and combined wave and surge overtopping conditions. The crest and the landside of the levee were strengthened by high performance turf reinforcement mat (HPTRM) to protect against overtopping erosion. A conceptual model for HPTRM strengthened levee as well as a methodology for analysis and incorporation of various overtopping flow conditions in levee slope stability is presented. The findings of this study indicate that HPTRM strengthening of the levee improves the stability of the levee significantly during wave only as well as combined storm surge and wave overtopping conditions. However, during the storm surge conditions, the factor of safety is only improved slightly as a result of strengthening of the levee by HPTRM.

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New Orleans Levee System Performance during Hurricane Katrina: London Avenue and Orleans Canal South

Cited by 44 publications

References 2 publications

Geohazards and large, geographically distributed systems

Geohazards and large, geographically distributed systems

Anisotropic Analysis of I-Walls in New Orleans

Slope Stability Analysis of Earthen Levee Strengthened by High Performance Turf Reinforcement Mat under Hurricane Overtopping Flow Conditions

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