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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 11 Abstracts search results
Document:
SP106-07
Date:
June 1, 1988
Author(s):
N. Rakhakrishnan and Robert J. Smith.
Publication:
Symposium Papers
Volume:
106
Abstract:
Computers are becoming a day-to-day tool in the Corps of Engineers design offices for analyzing and designing concrete structures. These structures vary from specialized hydraulic structures, such as locks and dams, to conventional retaining walls and buildings. The Corps uses both general purpose, as well as special purpose, computer programs for the design/analysis of these structures. Many of the special purpose programs are developed under a very successful project called Computer-Aided Structural Engineering (CASE). The Corps is also active in performing research toward developing ideal engineering workstations for design engineers using microcomputers as tools. Some of the Corps' activities in these areas are highlighted.
DOI:
10.14359/3052
SP106-08
Victor E. Saouma, Saurine, Saurine Doshi, and Michael S. Jones, and Efthimios S. Sikiotis
A brief overview of current research undertaken on computer-aided design of reinforced concrete is presented. The following research projects, related to concrete structures, are briefly discussed: 1) interactive graphics optimum design of reinforced concrete frames; 2) interactive graphics optimization-based design of partially prestressed concrete beams; 3) hybrid design program for the design of reinforced concrete frames; and 4) usage of expert systems as quality assurance programs for the design of reinforced concrete to check their compliance with all the appropriate ACI Building Code provisions.
10.14359/3072
SP106-10
Fred T. Tracy
Paper describes the capabilities and techniques used in a Three-Dimensional Stability Analysis/Design (3DSAD) computer program for concrete monolithic structures. The program was designed to do both nonstandard-shaped structures and specific structure types such as dams, locks, cooling towers, power houses, etc. The philosophy of the program was to first develop general geometry, loads, and analysis modules and then develop modules for specific structures using the general modules as tools. Another general purpose capability, the Free-Body Module, was then added to the collection of tools. Specific modules were also enhanced with a Design Memorandum (DM) Plate capability for final reporting of results. Paper describes the general modules and the specific modules for dams with emphasis on algorithms and procedure for the general modules.
10.14359/3078
SP106-03
Robert H. Iding, Boris Bresler, and Susan P. Dawson
The complex factors that influence behavior and strength of concrete components failing in shear pose serious obstacles to the use of traditional linearly elastic analysis techniques. However, recent developments in the application of nonlinear finite element methods and in modeling nonlinear material properties have allowed the development of a computer model to effectively analyze complex nonlinear situations. The model includes material laws representing the full inelastic response of concrete cracking and crushing (including effects of triaxial confinement) and the yielding of reinforcing steel bars. This computer model is verified using data from a test program involving nine reinforced concrete shear-sensitive beams of varying dimensions and span-to-depth ratios. Calculated and measured failure modes, deflection and cracking patterns, and ultimate capacities corresponded well in all of the beams compared. A computer program based on the verified model has been used by the authors in several applications to predict ultimate capacity and failure modes for complex systems of walls, beams, and slabs. One such application, the prediction of shear strength in the reinforced concrete ice walls of an offshore concrete gravity-based structure, is discussed in detail.
10.14359/2887
SP106-04
L. J. Kaetzel ane J. R. Clifton
Describes an expert system with a knowledge base consisting of freeze-thaw, sulfate, alkali-aggregate, and corrosion aspects of concrete durability. The system was developed on a microcomputer using an expert-system shell facility. This paper discusses knowledge acquisition, knowledge representation, issues relating to the maintenance of expert systems, and recommendations for field implementations.
10.14359/1979
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