A 3D analytical formulation of a precast prestressed pile (PPP) seismic isolator with top and bottom spherical rolling kinematic constraints is proposed. The PPP isolator was initially conceived its a low-cost seismic ...

This investigation deals with the analytical formulation and experimental validation of a prestressed reinforced concrete seismic isolator with kinematic constraints at both ends. The kinematic isolator was proposed initially ...

This paper reports on the experimental behavior and design of a rolling self-centering precast prestressed pile (PPP) isolator. This isolation device was developed as an alternative for use in light-weight and low-cost ...

In this study it was determined the reduction of area ( Z% ) variation in tensile test with stock time of a high carbon steel wire rod for prestressed concrete, after the process of rolling and controlled cooling. The ...

The following study shows the results of measurements of lengths and widths of cracks in prestressed concrete beams, subjected to a process of accelerated corrosion by applying a galvanic current, as well as assessing their ...

The need for transmission lines expansion (TL) is evident in the face of growing electrical energy demand in Brazil as well as the great distances between generation and consumption centers. It is known that numerous ...

To accomplish an appropriate performance of tuned mass dampers (TMDs) in building structures subjected to earthquake excitations, considerable amounts of mass must be added at upper floors, which in occasions may result ...