Abstract A manual mechanical prestressing system was manufactured which used to apply a post-tension force the high-stress steel wires in curved slab member. The study aims experiment with use of technique thin sections assess prestressed influencing behavior at initial and final loading stages. Two advantages achieved system; pulling all positions simultaneously application perpendicular cross...

In the case of prestressed concrete structures, information about actual state prestressing is an important basis for determining their load-carrying capacity as well remaining service life. During life structure, initial level inevitably reduced a result actions various factors. These reductions force are considered prestress losses, which influenced by construction stages, used materials, tec...

The limited transferring moment capability of Glulam (glued laminated wood) joints results in insufficient joint stiffness. Therefore, most the connections are hinged joints. Based on previous studies, one novel end-connection device was proposed to form prestressed continuous beams. beams were composed low-relaxation steel bars, deviator block, anchorage device, and apparatus. These bars tensi...

Welding thin-plate panel structures often results in warping of the panels. Several mitigation methods, including preheating and prestressing the plates during assembly, have been investigated and used by some fabricators. This paper studies the distortion mechanisms and the effect of welding sequence on panel distortion. In this study, distortion behaviors, including local plate bending and bu...

Nowadays, concrete is mostly prestressed with steel. But the application of prestressing steel restricted in a highly corrosive environment area due to corrosion steel, leading reduction strength and may cause sudden failure. Carbon textile considered an alternate material its resistance property, high tensile strength, perfectly elastic. Prestressing also only realistic way utilize fully ultra...

There is still a large number of masonry arch bridges on the road and railway network. More than 80 % are over 100 years old so their service life has been exceeded significantly. The general focus paper to show method for strengthening restoration these bridges, especially if they have damaged by longitudinal cracks. performed using new spandrel walls from reinforced concrete stabilized transv...