The use of precast post-tensioned segmental (PPS) piers is growing in the bridge industry, particularly Accelerated Bridge Construction (ABC). To increase their high-seismicity regions, this study focuses on seismic performance PPS under pulse-like near-field earthquakes. Two ensembles 40 ground motions and 44 far-field along with three various heights are used a series incremental dynamic anal...

Abstract In this study, a new transverse post-tensioning (TPT) technique for box girder bridges is investigated, where TPT applied at the top flange of resulting in eliminating in...

Abstract Problems in existing post‐tensioning structures with metallic ducts occur mainly related to corrosion of the tendons due chloride ingress at “weak points” structure. Despite this PT technology overall can be considered as proven and successful, sometimes severe damages collapses without warning are reported. As none inspection monitoring methods allows a complete meaningful evaluation ...

This research was conducted by combining two structural systems: post-tensioned core walls and an outrigger in a 40-story building. A Vierendeel system applied to one stories, comparison between models performed determine the best locations. In addition, effect of at only 25 % building height investigated. Subsequently, positions were with bonded post-tension %. The results showed improvement l...

In this paper, we propose an overloaded multiple-input multiple-output (MIMO) signal detection scheme with slab decoding and lattice reduction (LR). The proposed scheme firstly splits the transmitted signal vector into two parts, the post-voting vector composed of the same number of signal elements as that of receive antennas, and the pre-voting vector composed of the remaining elements. Second...

In present study, a mathematical model of the vehicle–floating slab track (FST) interaction is established to investigate the coupled behaviour of vehicle–track system. The FST is modelled as the double Euler -Bernoulli beam including the rail and slab. The railway vehicle is simplified as a multi-rigid-body model. The wheel–rail interface is treated using a nonlinear Hertzian contact model, co...

The feasibility and sensitivity of electrochemical noise (EN), electrochemical impedance spectroscopy (EIS), and linear polarization resistance (LPR) for detection of corrosion in post-tensioning (PT) components was investigated. The use of the electrical resistance (ER) technique, as well EIS and LPR, to detect air space corrosion at the grout voids was also explored. The results showed that h...

The potential for monitoring the construction of post-tensioned concrete beams and detecting damage to the beams under loading conditions was investigated through an experimental program. First, embedded sensors were investigated that could measure pre-stress from the fabrication process to a failure condition. Four types of sensors were installed on a steel frame, and the applicability and the...

Acoustic emission (AE) technique is gaining increasing interest for application in civil engineering. AE indeed is a passive non intrusive technique that can be applicable either in Structural Health Monitoring SHM (global evaluation) and in defect localization (local evaluation). However a great effort yet have to be done on data handling and data interpretation, especially in eliminating acou...