Monitoring and Analysis of Prestress Loss in Prestressed Box Girder Bridges Strengthened with External Prestressing [PDF]
SensorsTo investigate the effects of long-term prestress loss on concrete box girders strengthened with external prestressing, a large-span box girder, in service for over 20 years and strengthened with external prestressing, was monitored for four months ...
Haoran Guo +4 more
doaj +7 more sources
Prestress Loss of CFL in a Prestressing Process for Strengthening RC Beams [PDF]
International Journal of Polymer Science, 2017 A prestressing system was designed to strengthen reinforced concrete (RC) beams with prestressed carbon fiber laminate (CFL). During different prestressing processes, prestress loss was measured using strain gauges attached on the surface of CFL along ...
Xinyan Guo +3 more
doaj +3 more sources
Prediction of Long-Term Prestress Loss and Crack Resistance Analysis of Corroded Prestressed Concrete Box-Girder Bridges [PDF]
Advances in Civil Engineering, 2022 Reasonable assessment of long-term prestress loss and crack resistance is essential to ensure the service performance of prestressed concrete (PC) bridges.
Yiming Yang +3 more
doaj +2 more sources
Transfer Length and Prestress Losses of a Prestressed Concrete Box Girder with 18 mm Straight Strands [PDF]
Buildings, 2023 Despite the potential advantages of 18 mm strands, the limited research on the behavior of girders with larger-diameter strands hinders the application in bridges. Transfer length and prestress losses are two important indicators.
Xin Jiang +6 more
doaj +2 more sources
Experiment of the monitoring prestress loss of prestressed concrete beams with damages under static loading [PDF]
Archives of Civil Engineering, 2023 In this paper, based on the feasible method and sensors for the full-scale prestressed monitor, the novel optical fiber sensors and the traditional monitoring sensors will be set up into two prestressed concrete beams with the same geometrical dimensions,
Jinbo Wang +3 more
doaj +3 more sources
Analysis of Re-Tensioning Time of Anchor Cable Based on New Prestress Loss Model
Mathematics, 2021 Considering the interaction among anchor cable, frame beam and rock mass, a new model of prestress loss of anchor cable was established. The accuracy and applicability of the new model were verified by comparing the field monitoring data and the ...
Keyou Shi +3 more
doaj +3 more sources
EM-Based Monitoring and Probabilistic Analysis of Prestress Loss of Bonded Tendons in PSC Beams [PDF]
Advances in Civil Engineering, 2018 The prestress level is a key factor of prestressed concrete (PSC) beams, affecting their long-term serviceability and safety. Existing monitoring methods, however, are not effective in obtaining the force or stress of embedded tendons.
Zheheng Chen, Shanwen Zhang
doaj +2 more sources
Theoretical Study on Prestress Loss in Cross-Tensioned Concrete Pavement with BFRP Tendons [PDF]
Applied Sciences, 2020 Cross-tensioned concrete pavement can reduce transverse joints and cracks and improve the durability of the pavement, and the decrease in slab thickness can be achieved without damaging the performance of the pavement. However, the corrosion of the steel
Yating Zhang, Zhiyi Huang
doaj +2 more sources
Comparative Study Of Prestress Losses
Engineering, Technology & Applied Science Research, 2017 This paper compares the prestress losses as calculated by four different design codes; British standard CP110, Comite Europeen du Beton 70 and 78, American Concrete Institute 77 and the Prestressed Concrete Institute method (PCI). The comparison is done by determining the total losses which take place in a rectangular prestressed concrete beam for both
Mustapha Boukendakdji +2 more
openalex +5 more sources
A New Prestress Loss Calculation Model of Anchor Cable in Pile–Anchor Structure
Mathematics, 2022 Pile–anchor structures are widely used in foundation excavation and slope reinforcement due to their safety and reliability. However, the pile–anchor structures have the common problem of the prestress loss of anchor cables, which may reduce the ...
Xing Gao +5 more
doaj +3 more sources