This paper describes the experimental and numerical study on axial compressive behaviour of circular-in-circular concrete-filled double-skin steel tube (CFDST) stub columns with large void ratio. Nine specimens various ratio (Rv), diameter-to-thickness outer (Do/to) strength concrete (fcu) were tested under compression. The failure patterns, load versus displacement (strain) relationship, ultim...

Structural optimization using computational tools has become a major research field in recent years. The paper deals with a sizing optimization analysis of laminated circular cylindrical shell. For thin-walled shells, the classical shell theory is capable of accurately predicting the shell behavior. The weight minimization subjected to displacement constraint within the numerical optimization o...

Fiber-reinforced polymers (FRPs) are widely used as composite materials in civil engineering applications to rehabilitate or strengthen reinforced-concrete structural elements. The purpose of this study was compile an extensive and up-to-date experimental database based on the compressive tests conducted circular confined concrete elements using FRP materials. Strict criteria were implemented d...

Piles used in bridges, structures and marine environments are typically produced using concrete, steel, and timber. High repair and replacement costs of these piles have led North American highway agencies and port authorities to investigate the feasibility of using durable materials such as fiber-reinforced polymers (FRP) in pile applications. This paper presents a new generation of composite ...

The purpose of this article is to describe the use of shortening and angulation to manage composite bone and soft tissue loss associated with combat-related type IIIB open tibia fractures. Four patients underwent placement of a software-driven circular fixator with acute shortening and angulation to manage composite bone and soft tissue loss. Frames were applied using the Rings First Method, an...