Corps-Wide Conference on Computer-Aided Design in Structural Engineering. Volume VII. Single- and Multicell Conduits and Tunnels PDF Download
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Author: George W. Henson Publisher: ISBN: Category : Languages : en Pages : 60
Book Description
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.
Author: George W. Henson Publisher: ISBN: Category : Languages : en Pages : 60
Book Description
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.
Author: R. M. Wamsley Publisher: ISBN: Category : Languages : en Pages : 407
Book Description
The papers in this volume were presented by representatives from each U.S. Army Corps of Engineers Division in the continental United States. The papers give an overall view of each Division, its area, responsibilities, and major problems. Geographical and environmental factors influencing the work are covered and the fraction of the work done by contractors and consultants is discussed. A major portion of many of the papers concerns the use of computers in the design and analysis of structures. Projects, types of computer service used, cost and time savings, and design improvements are described. Also discussed are the means the Division uses for disseminating program information, starting new developments, publicizing improvements, discarding old programs, and which areas of structural design need more computer programs. Views on encouraging and controlling the development of computer programs for structural engineering are expressed and procedures and recommendations for both Division and Corps level operations are suggested. Problems experienced in program and equipment use are discussed. Many papers are accompanied by an appendix containing program abstracts. (Author).
Author: N. Radhakrishnan Publisher: ISBN: Category : Languages : en Pages : 133
Book Description
In December 1975, the Office, Chief of Engineers, approved a proposal to develop and conduct a unique experiment in instant dissemination, a participative conference. The objectives of the Conference were to produce a Corps-wide awareness of current capability in Computer-Aided Design in Structural Engineering (CADSE), identify short- and long-term needs, and recommend ways to meet those needs. This Conference was one of several experiments designed to test the value of research findings on how to enhance the dissemination of information. The Conference was needed because the developments in CADSE have taken place so rapidly that engineers have been unable to keep up with what is generally available or to coordinate what is to be done. The findings of the Conference are: The Corps has a few good programs; many more are needed, development should be on a Corps-wide basis; a Structural Engineering Software Center (SESC) is needed; and means for funding program development on a Corps-wide Bases must be found. The organizers analyzed the products of the Conference and recommended forming a permanent coordinating committee for Computer-Aided Structural Engineering (CASE) composed of one structural engineer from each Division Office and one Middle manager engineer (rotational yearly) from a District Office within each Division and members from Corps laboratories, as appropriate. The Committee, working under the Chief, Structures Branch, OCE, is to resolve the funding and SESC findings of the Conference and then proceed to guide long-term CADSE efforts on a Corps-wide basis.
Author: George W. Henson
Author: George W. Henson
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Author: N. Radhakrishnan
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Author: United States. National Technical Information Service
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Author: R. M. Wamsley
Author: N. Radhakrishnan