Corps-Wide Conference on Computer-Aided Design in Structural Engineering. Volume VII. Single- and Multicell Conduits and Tunnels,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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This paper examines the computer-aided design of cast-in-place single-barrel conduits through embankment type dams and levees. Circular and oblong shapes under high fill are emphasized. The paper uses design criteria defined in EM 1110-2-2902, Conduits, Culverts and Pipes. Design loads are groundwater and surcharge water, internal water pressure, concentrated live loads, and backfill. The circular shapes are analyzed as rings of uniform thickness. Shearing and diagonal tension stresses are less critical for these circular shapes than for beams and slabs, so Corps requirements for conduits are less rigid than those in the ACI code. A computer program rating procedure composed of 15 elements was devised to evaluate programs useful for the design of muticell conduits. These concrete conduits are typically used for river diversion through urban areas and in earthen dam embankments under high fills. Most Corps constructed tunnels are either water conveyance or transportation tunnels driven through rock. This paper is limited to ways in which the computer can be used to aid the structural engineer in the design of such tunnels.
- Computer Programming and Software
- Civil Engineering