Preliminary Design Considerations for Flat Deployable Structures
Deployable structures are prefabricated frames that can be stored in a compact configuration, and can be easily deployed into a large-span, load-bearing space structure. The interest in...

Buckling Load of Tapered Columns
The basic tapered column with larger section in the center, is considered using Rayleigh-Timoshenko method. Column has linearly increasing Io with...

Behavior of Cold-Formed Steel-Concrete Composite Beams
An experimental investigation was conducted at California State University - Long Beach to study the structural behavior of composite beams made of thin-walled cold-formed steel stiffened...

Cold-Formed Z-Sections Under Axial Load and Bending
The use of cold-formed Z-section members as beam-columns presents some unique design problems which are not adequately addressed in the current design specifications. If these members...

Brace Connections for Ductility
Influence of connection design on the seismic behavior of welded bracing members made of double channels is studied in this paper. Shortcomings of commonly used connection details as per...

Strength of Biaxially Crooked Jumbo Columns
The ultimate strength of axially loaded jumbo columns with biaxial initial out-of-straightnesses is analyzed by the finite element method. The analysis makes use of the measured residual...

Behavior of Single Angles Under Compression and Biaxial Bending
Angle struts are being used extensively as web members of trusses, bracings of buildings, and they are widely used as main members in transmission and lattice towers. Because of their...

Hysteresis Studies Including Post Buckling of Angle Web-Members for Truss-Type Girders
The paper presents analytical studies of the buckling capacities and hysteresis behavior of angle-web members of truss-type girders. The eccentricity between the loading point and the...

Portal Frame Stability with Nonproportional Loads
An inelastic theoretical study of the effect of various load paths is conducted on the in-plane behavior of an imperfect portal frame with flexible joints. The loading consists of concentrated...

A Comparison of Performances of Various Frictional Base Isolation Systems
The results of a comparative study of the performances of several frictional base isolation devices including the Sliding-Joint, the French System, and the Resilient-Friction isolators...

Frequency Response Design of Controlled Structures
The installation of optimal control systems has been shown to be effective in reducing the vibration responses of structures. In addition to the effectiveness, there are many factors that...

Applications of Fuzzy Mathematical Programming in Structural Optimization
In this paper, several applications of fuzzy mathematical programming in structural optimization are reviewed and discussed. In addition, a formulation of optimum earthquake resistant...

A KBES for Seismic Design of Buildings
A knowledge-based expert system for earthquake resistant design of buildings is described. The knowledge-intensive nature of the domain and the consequent motivation for an expert-system...

A Knowledge Based System for Deriving Qualitative Seismic Behavior
The analysis and design of complex or critical facilities, such as tall buildings, nuclear power plants, offshore structures, or cable stayed bridges requires that these facilities be...

A Knowledge-Based System for Evaluating the Seismic Resistance of Existing Buildings
The large number of existing buildings designed without considerations of seismic loading warrants the development of computer aids for the evaluation of their seismic resistance. Since...

Some Interactive Graphics and Parallel Processing for Earthquake Engineering
Ongoing research at Cornell University on computer-aided earthquake engineering of building structures is exploiting innovations in computing in several areas. Although some of the approaches...

Optimization for Exact Stability of 2-Bar Trusses
This paper is concerned with the structural optimization problem of minimizing the weight of a 2-bar truss subject to nonlinear stability constraints. Optimization problems for stability...

Microsilica (Silica Fume) Concrete Durability in Severe Environments
Microsilica (silica fume) concrete has provided increased durability in a variety of aggressive environments. Technical information is presented for microsilica concretes exposed to fire,...

Fatigue Behavior of Steel Connection Angles
A method for predicting the fatigue behavior of flange angle elements is presented. The primary emphasis herein concerns an analytical approach for evaluating the fatigue life of flange...

Wood Diaphragms: Performance Requirements and Analytical Modeling
Wood diaphragms represent the principal mechanisms for resisting lateral loads in many light-frame buildings. While recent research has provided several mathematical models for predicting...

 

 

 

 

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