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Principles of the NATM and Other Uses of the Geologic Monitoring Techniques
The NATM (New Austrian Tunneling Method) differs in several respects from other construction methods. Also referred to as the 'sequential support method' or the...

Conclusions from Project-90 With Regard to a Regulatory Framework
A five year performance assessment program, Project-90 [1], has been concluded by the Swedish Nuclear Power Inspectorate, SKI. The project was defined to develop independent assessment...

Management of Comments on DOE's Site Characterization Plan (SCP) and Integration with the Planned Geotechnical Program
The U.S. Department of Energy (DOE) has committed to respond to comments on the SCP throughout the site characterization process. As of January 1990 DOE has received 4,574 comments on...

Scenario Evolution: Interaction Between Event Tree Construction and Numerical Analyses
Construction of well-posed scenarios for the range of conditions possible at any proposed repository site is a critical first step to assessing total system performance. Event tree construction...

The Technical Challenge of Mechanized Excavation for Nuclear Waste Repositories
The requirements of mechanized tunnelling and shafting techniques within this newly developing field, namely the excavation of Nuclear Waste Repositories, will challenge the designers...

Recent Development in the Design of Hard Rock Tunnel Boring Machines for the Mining Industry
Underground development for nuclear waste storage will possibly require tunnels to be excavated in a variety of rock conditions and configurations. Recent innovations in Tunnel Boring...

Shaft Boring Machine?A Method of Mechanized Vertical Shaft Excavation
The Shaft Boring Machine (SBM) is a vertical application of proven rock boring technology. The machine applies a rotating cutter wheel with disk cutters for shaft excavation. The wheel...

Mechanical Tunnel Excavation in Welded Tuff
The Technical Review Board for the United States high-level radioactive waste facility at Yucca Mountain has recommended maximum use of 'the most modern mechanical excavation...

A First Look at Roadheader Construction and Estimating Techniques for Site Characterization at Yucca Mountain, Nevada
The Yucca Mountain site characterization program will be based on mechanical excavation techniques for the mined repository construction and development. Tunnel Boring Machines (TBM's),...

Design, Selection, and Application of Disc Cutters in Hard and Abrasive Rock
Disc cutters have been used on tunnel boring and shaft boring machines for many years and are a proven method to bore hard rock. This paper will study the important parameters which effect...

Expert System Applications for Bridge Engineering
Expert systems (ES) are computer programs that attempt to simulate the reasoning processes and knowledge of a human expert. The particular problem of bridge analysis/design is a prime...

Optimized Models for Predicting Structural Response in Highway Bridges
Optimization techniques are a viable option for modeling bridges that have been field tested. The error between the experimental strains and the analytical strains is minimized by adjusting...

A Mechanical Strength Critic for a Simultaneous Engineering Design Environment
Critic-based design systems are systems whose architecture consists of a central synthesis module responsible for initiating design decisions and a set of independent asynchronous modules,...

Visualizing the Performance of Structural Optimization Processes
Graphical constructions are discussed that enable the performance of iterative structural optimization processes to be evaluated visually. The first, a basins of attraction construction,...

A PC-CAD System for Prefabricated Steel Bridges
A microcomputer-aided analysis and design system for prefabricated steel bridges is presented in this paper. The system was customized to perform all the required engineering to analyze,...

Computerized Bridge Monitoring System
Research at the University of Connecticut has generated a full scale vibrational monitoring system for installation on a Connecticut bridge. The monitoring system consists of a field computer...

Integrated Structural Engineering Solution for Design, Drafting and Analysis
Computervision Corporation is a leading CAD/CAM/CAE vendor that offers a complete integrated structural solution to customers. This structural solution allows customers to manage intricate...

Integrated Structural Design Software in the IBM Architecture & Engineering Series
The Architecture and Engineering Series (AES) software by IBM is a high function, fully integrated design, drafting, and information system. The system provides three dimensional geometry...

Computer-Aided Structural Analysis
Finite Element Methods and other numerical techniques are often taught nowadays in the undergraduate Structural Analysis courses. Commercial, structural computer programs are becoming...

A Survey of Discrete Variable Optimization for Structural Design
Available methods for discrete variable structural optimization are reviewed. Methods are classified according to three categories: branch and bound, approximations using branch and bound,...

 

 

 

 

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