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Structural Research Series 440PDF


Title:Design of Thick-Walled Multiple Opening Conduits to Resist Large Distributed Loads
Alternative Title:A Report on the Study "Investigation of Multiple Opening Concrete Conduits"
Author(s):Gamble, W.L.
Subject(s):Reinforced concrete
Abstract:The design of multiple opening reinforced concrete conduits suitable for use as waterways through and under large earth-fill dams is discussed. The loadings considered are given values, and are not a subject of this investigation. Vertical overburden pressures up to 30 k/ft2, corresponding to about 250 ft. of fill, are considered. The resultant structures have members with low span/depth ratios, and the analysis and design of these structures is discussed, in a number of steps. The idealization of the thick-walled ·structure into a frame of linear elements is discussed, with particular attention to the joint areas. The analysis of the idealized frame is then considered. After the basic analysis is done, moments,· shears, and thrusts must be found for the critical cross sections, and the selection of these sections is discussed. A criterion for the shear strengths of the deep members used in the conduits is presented. This is based on tests of models done earlier in the investigation, and has been checked against the results of other deep beam tests. The flexural reinforcement and the detailing of the flexural steel are discussed.
Issue Date:1977-04
Publisher:University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Civil Engineering Studies SRS-440
Genre:Technical Report
Sponsor:Corps of Engineers, U.S. Army.
Contract No. DACW-73-72-C-0065
Date Available in IDEALS:2009-10-07
Identifier in Online Catalog:267008

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