INNOVATIVE USE OF SHAPE MEMORY ALLOYS AS REINFORCEMENTS FOR CONCRETE BEAM-COLUMN JOINTS: AN OVERVIEW

AN OPTIMIZATION PROCEDURE FOR CONCRETE BEAM-COLUMN JOINTS STRENGTHENED WITH FRP

This paper illustrates an optimization procedure of concrete beam-column joints subjected to shear that are strengthened with fiber reinforced polymer (FRP). For this aim, five different values have been considered for length, width and thickness of the FRP sheets which created 125 different models to strengthen of concrete beam-column joints. However, by using response surface methodology (RSM...

An Innovative Isolation Bearing with Shape Memory Alloys

This paper presents a new isolation device concept using shape memory alloy elements, to evaluate the possibility of its application and to investigate the effectiveness in reaching the structural design goals compared with traditional isolation devices. Shape memory alloys (SMAs) are characterized by unique mechanical properties due to solid-solid transformation between phases of the alloy. Th...

Evaluation of Seismic Response of Concrete Structures Reinforced by Shape Memory Alloys (Technical Note)

Shape memory alloys (SMAs) are unique smart materials that have many advantages, such as ability to resist large strains without leaving residual strains and ability to recover original form. However, the high costs of SMAs have limited their usage. This paper evaluates the behavior of concrete structures equipped with SMAs in an optimal manner as they are being used along the plastic hinge of ...

A 3d Micro-Plane Model for Shape Memory Alloys

are compared with the experimental results. In these test results the shape memory alloys behavior as: super elasticity under various temperatures, loading rate effects, asymmetry in tension and pressure, various loops of loading and unloading, hydrostatic pressure effects, different proportional tension-shear biaxial loading and unloading, and also deviation from normality due to non-proportio...

Seismic Behavior of Beam Column Joints in Reinforced Concrete Moment Resisting Frames