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Falgout Canal Floodgate Structure Unbalanced Forces and Proposed Solutions

Falgout Canal Floodgate Structure Unbalanced Forces and Proposed Solutions. October 2013. Falgout Canal Floodgate Structure . Status Project is in preliminary engineering phase Estimated completion is mid November 2013 Meeting Goals Present findings of unbalanced load calculations

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Falgout Canal Floodgate Structure Unbalanced Forces and Proposed Solutions

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  1. Falgout Canal Floodgate Structure Unbalanced Forces and Proposed Solutions October 2013

  2. Falgout Canal Floodgate Structure Status • Project is in preliminary engineering phase • Estimated completion is mid November 2013 Meeting Goals • Present findings of unbalanced load calculations • Discuss proposed methodology of engineering structure to accommodate unbalanced forces • Receive feedback from CPRA & proceed with preliminary design

  3. Falgout Canal Floodgate Structure Unbalanced Force - Landing Structure

  4. Falgout Canal Floodgate Structure Unbalanced Force in Landing Structure

  5. Falgout Canal Floodgate Structure Slope/W Analysis

  6. Falgout Canal Floodgate Structure Site Plan

  7. Falgout Canal Floodgate Structure Group 2013 Analysis

  8. Falgout Canal Floodgate Structure • Global Stability Analysis • Calculate factor of safety and failure surface using vertical water pressure only • Apply a resisting force until factor of safety meets criteria • Design Structure to Resist Unbalanced Load • Option 1 – Widen barge structure (Analyzed in Slope/W) • Option 2- Use cutoff wall, landing piles and receiving structure together (Analyzed in Group 2013 by Ensoft)

  9. Falgout Canal Floodgate Structure Unbalanced Forces Outline • Analyze global stability for SWL • Determine unbalanced force and failure plane EL • Perform preliminary design of gate landing foundation and receiving structure w/o unbalanced forces • Apply unbalanced force to gate landing foundation • Unbalanced force resisted by gate foundation alone • Apply static hydraulic forces to receiving structure w/o soil above failure surface • Hydraulic force resisted by receiving structure alone • Apply unbalanced force and hydraulic force to combined gate foundation and receiving structure • Unbalanced force + Hydraulic force resisted by gate foundation and receiving structure together

  10. Falgout Canal Floodgate Structure Unbalanced Force

  11. Falgout Canal Floodgate Control Structure Analyses Summary

  12. Falgout Canal Floodgate Control Structure • Unbalanced force can be resisted by cutoff wall combined with landing piles together • Hydraulic force can be resisted by the receiving structure • The connection of the cutoff wall and the landing piles together and the transfer of forces between the landing foundation and the receiving structure is by a pile cap at landing piles and/or through the gate structure. Conclusion

  13. Braced Wall Design

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