in this paper, moment-curvature behavior and ductility of prestressed concrete members based on nonlinear analysis is investigated. influence of various design parameters on ductility of flexural members is determined according to appropriate materials models for stress-strain curves of concrete, prestressing steel and conventional reinforcements. parameters studied include reinforcing index (ω...

Abstract In this paper, the Improved Applied Element Method (IAEM), which was originally developed as an effective analysis technique for large-scale bonded and unbonded prestressed structures, is utilized to carry out failure modeling of bridges under different hazard loads. A typical concrete girder bridge analyzed two hazardous loading scenarios. The first one applying a detonation charge lo...

Simply supported prestressed concrete (PC) box girders have been widely adopted in high-speed railway bridges. In complex climatic environments, the corrosion of prestressing strands always occurs and deteriorates flexural behavior PC girders. present study, six T-shaped scaled beams were designed fabricated according to specifications for a girder. The process strand was experimentally simulat...

and findings of laboratory and field tests of a new generation of precast composite piles used for the first time in the construction of the Route 40 highway bridge over the Nottoway River in Virginia. The piles consisted of 24.6 in. (625 mm) diameter concrete-filled glass fiber reinforced polymer (GFRP) circular tubes, with a 0.21 in. (5.3 mm) wall thickness. The composite piles extended above...

Synchrotron radiation facilities are very important in different areas of fundamental and applied science to investigate structures or processes at small scales. Magnet–girder assemblies play a key role for the performance such accelerator machines. High structural eigenfrequencies magnet–girder required assure sufficient particle beam stability. The objective present parametric study was numer...

Abstract Based on the reconstruction and expansion project of an expressway, a set rapid construction technology for integrated erection fully prefabricated rigid frame bridges is proposed, which solves problems unmatched work efficiency each working face in conventional bridge erectors long period traditional suspension assembly technology. This method realizes this type highly urbanized areas...