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Title: Analysis of a floodplain I-wall embedded in horizontally stratified soil layers during flood events using Corps_I-Wall Software Version 1.0
Authors: Ebeling, Robert M., 1954-
Fong, Moira T.
White, Barry C.
Keywords: Floods
Hydraulic structures--Analysis
Hydraulic fracturing
Soil-structure interaction
Flood control
Computer programs
Publisher: Information Technology Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Flood and Coastal Storm Damage Reduction Program (U.S.)
Series/Report no.: ERDC/ITL ; TR-16-3
Abstract: The purpose of the I-Wall Analysis R&D effort is to provide the U.S. Army Corps of Engineers (USACE) districts with essential tools in analyzing and evaluating I-Wall performance in riverine, fluvial, and coastal environments. This report summarizes an engineering method and its implementation in the software Corps_I-Wall Version 1.0. The executable program is referred to as CI-Wall. This initial version of Corps_I-Wall is used for the design of new I-Walls or the analysis of existing I-Walls in floodplains (i.e., I-Walls embedded in level ground) during flood loading. Horizontally stratified soil layers are assumed in Version 1.0. Other Corps_I-Wall software capabilities for engineering analysis include: total stress and/or effective stress earth pressure calculations; Rankine, Coulomb, or logarithmic spiral-based earth pressure coefficients; hydrostatic pore water pressure computed from surface water(s) and/or piezometric surface(s) within each of the layered soil regions; pore water pressures computed from line of seepage, steady-state seepage in soil regions with different hydraulic conductivities; gap initiation and propagation using hydraulic fracturing criteria; and boundary pressures (e.g., for wave loading of coastal structures and/or surface surcharge. Probabilistic analysis is a primary component of Corps_I-Wall for new and existing I-Wall analysis.The probabilistic analysis capabilities for the design of new I-Walls results in a statistical characterization of sheet-pile tip embedment. The probabilistic analysis capabilities for analyzing existing I-Walls include the construction of a system response curve (a.k.a., fragility curve), which gives the probability of rotational instability as a function of flood elevation. Examples are provided to highlight each of these capabilities and a user’s manual for using the Graphical User Interface for CI-Wall is included.
Appears in Collections:Technical Report

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