The Influence of Prestress Losses on the Anchorage Zone of Prestressed Concrete Member / Įtemptųjų Gelžbetoninių Elementų Įtempių Nuostolių Įtaka Inkaravimo Zonai

Abstract

Abstract. Article briefly discusses the factors affecting bond between concrete and reinforcement of prestressed concrete member. Behavior of prestressed concrete member during release of reinforcement is discussed. Comparative analysis of equations, which describes relation between strand draw-in and transfer length, is presented. Article analyses distribution of loss of prestress at the anchorage zone of prestressed concrete member. Estimation of rational position of strands at the anchorage zone of flexural prestressed concrete member was performed. Influence of constant and linearly variable stress distribution at the end of the strand and member cross-section hight on the position of the reinforcement at the member crosssection is analysed.

Influence of Static and Dynamic Loads on the Behavior of Prestressed Concrete Railway Sleepers

“…Proceedings from 22nd Czech Concrete Day 2015 F 0,05 load in sleeper reinforced with 10,5 mm diameter bars was higher up to 13% under static load and up to 6% under dynamic load comparing with sleepers reinforced with 9,6 mm diameter bars. F 0,05 load in sleeper D2 (10,5) was lower by 6% than in sleepers with lower reinforcement ratio.…”

“…Tension force is introduced to concrete through the transmission length (L T ) (Fig. 2) and initial stresses are affecting bond of reinforcement during release [10] . Additional tension force induced by service loads is introduced to prestressing reinforcement during exploitation.…”

Sensitivity Analysis of Stress State of Welded Tanks

“…Loading from the oil and other input material and geometric characteristics were considered as deterministic using the values listed in the previous chapters. Numerous modern approaches exist for the study of the effect of input parameters of mathematical computational models on their outputs; see for e.g., [14][15][16][17][18][19][20]. The effects of the variability of input random variables described in Table 1 on the variability of von Mises reduced stresses were studied in this article.…”

Experimental research on statics bond performance of reinforcement-concrete interface after the combined action of corrosion and fatigue

“…Generally, the bond stress-slip relationship between the reinforced bar and concrete usually refers to the relationship between the average bond stress and the slip at the free end. Moreover, some researchers have studied bond stress distribution along the length direction in the anchorage zone of RC specimens (Jokūbaitis et al, 2014;Jokūbaitis et al, 2017). It is shown that the distribution curve of bond stress in the bond section gradually becomes flat with the corrosion of the reinforced bars (Zhao et al, 2013).…”