Best of Both Worlds
All around the Pacific Rim structural engineers are experimenting with concrete filled steel tubes as structural elements. The concrete filled tubes take advantage of the best properties...
Holding Court
Contractors had their work cut out for them when structural engineers specified concrete-filled steel tubes for the Thomas F. Eagleton Federal Courthouse's perimeter columns....
Translucent Structural Beacon
In East Los Angeles some 2,000 children, teens and adults are accessing their future inside a building that is as high-tech as the computers they are using to learn. The 40,000 sq ft building...
Boston's Third Harbor Tunnel (Available only in
Boston's immersed marine tube, the Third Harbor Tunnel, connecting South Boston and Logan Airport, is a $226 million component of the multi-billion dollar Central Artery/Third...
Boston's Home Run
The $1.3 billion Ted Williams Tunnel, the first part of Boston's Central Artery/Third Harbor Tunnel Project to be completed, has been designated the Outstanding Civil Engineering...
Axisymmetric Vibrations of Thick-Walled Cylindrical Tubes in the Presence of Thermal Residual Stresses
The paper presents an approach to the analysis of axisymmetric vibrations of thick-walled specially orthotropic multilayered cylindrical tubes. The first part of the paper is concerned...
Inelastic Response of Metal Matrix Composite Tubes
An analytical method which exactly satisfies the equations of the boundary value problem for the inelastic response of laminated metal matrix composite tubes on a point-wise basis is presented....
Carbon Formation Theory for Space Oxygen Processes
Production of oxygen from the Martian atmosphere or lunar soil and the recovery of oxygen in manned space environments may include carbon formation from CO as a unit process. Thermodynamic...
Analysis of Unstiffened and Stiffened Tubular Members Under External Pressure and Structural Loads
This paper summarizes some important results concerning the ultimate capacity of stiffened and unstiffened tubes under combined loading. Such tubes are candidates for use in offshore structures...
After the Blast
On February 26, 1993, a bomb exploded in an underground parking garage beneath the World Trade Center, killing six, causing hundreds of millions of dollars in damage and leaving a crater...
Study on Littoral Protection by Sand-Filled Tube
This study focuses on a new, excellent construction method which excels in both the environmental and scenic aspects. It enables the construction of coastal structures such as jetty, detached...
Chinese Standard for Concrete-Filled Tube Columns
In this paper an outline is given of the background, the design approach and some principal features of the Chinese Specification for the Design and Construction of Concrete-filled Steel...
A New Method from China to Determine Load-Carrying Capacity for CFST Members
The most common research method for CFST (concrete-filled steel tubular) members is to study the behaviors of the steel tube and the core concrete separately, then add them together to...
Thin Walled Circular Concrete Filled Steel Tubular Columns
The thin walled steel tube filled with high strength concrete delivers the economies of a concrete column with the speed of construction and the constructability of a steel column resulting...
The Generalized Brazier Problem for Orthotropic Straight Tubes of Finite Length
A new engineering approach, based upon a mixed variational functional, is presented for the analysis of the nonlinear static behavior of thin-walled, circular-cross-section cylindrical...
On-Orbit Chipless Cutting and Tube Welding in Space Station Freedom
Micro-gravity and strict environmental constraints of the laboratory, Habitation and other manned structures which comprise Space Station Freedom demand investigation into innovative processes...
Design of a Support and Foundation for a Large Lunar Optical Telescope
NASA is considering a large lunar telescope [LLT] and a smaller diameter precursor telescope experiment on the Moon. The preliminary design of the 16-meter optical aperture is being performed...
Full Scale Tests on Concentrically Loaded Fiber-Reinforced Pultruded Columns
This paper briefly reports on the experimental investigation in connection with the short term behavior of pultruded structural members under concentric loading. In particular, results...
Cables and Anchorages
The following types of cables are generally used in cable stayed bridges: Parallel bars; Parallel seven wire strands; Parallel or semi-parallel wire cables; Locked coil strands and ropes;...
Parametric Excitation of Collapsible Latex Tubes
In 1985, Liu and Ding (1989) made an experiment of collapsible tubes containing a pulsatile flow. A latex tube is sealed up in a plexiglass chamber. If the transmural pressure (TP) of...
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