Accidental Drop Load Effects on Buried Structures
Mehdi S. Zarghamee and Keng-Wit Lim
Simpson Gumpertz & Heger Inc. Engineering Mechanics and Infrastructure Division, 41 Seyon St., Building 1, Suite 500, Waltham, MA 02453, USA
The finite-element model we propose to analyze the dynamics of accidental drop loads on critical buried structures during steam generator replacement includes representation of drop objects, impacted structures, soil media through which stress waves travel, and buried structures. Analysis accounts for the nonlinear effects of large deformation, steel plasticity and buckling, concrete cracking and crushing , and stress wave damping through soil. Stress and strain in buried structures is used to evaluate the condition of buried structures such as buried prestressed concrete and ductile iron pipelines and reinforced concrete structures housing critical components subjected to accidental drop loads during steam generator replacement near nuclear reactors operations.
-  Abaqus Version 6.9, Simulia, Dassault Systèmes.
-  American Concrete Institute, “Building Code Requirements for Structural Concrete,” ACI 318, 2005.
-  American Concrete Institute, “Code Requirements for Nuclear Safety-Related Concrete Structures and Commentary,” ACI 349, 2006.
-  American Water Works Association, “Standard for Thickness Design of Ductile-Iron Pipe,” AWWA C150, 2002.
-  American Water Works Association, “Standard for Design of Prestressed Concrete Cylinder Pipe,” AWWA C304, 2007.
-  American Water Works Association, “Concrete Pressure Pipe,” AWWA Manual M9, 2008.
-  UDP Program, developed by Simpson Gumpertz & Heger Inc. for the American Concrete Pressure Pipe Association, 2007.
-  M. S. Zarghamee and K-L Fok, “Analysis of Prestressed Concrete Pipe Under Combined Loads,” Journal of Structural Engineering. Vol.116, No.7, pp. 2022-2039, 1990.
-  M. S. Zarghamee, K.-W. Lim, and K. Henshaw, “Structural Evaluation of Drop Load Effects on Buried Structures,” 20th International Conference on Structural Mechanics in Reactor Technology (SMiRT 20), Espoo, Finland, August 2009.
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