Results 11 to 20 of about 380 (177)

Study on prestress long-term loss of anchor cable considering coupled multiple factors

Rock and Soil Mechanics, 2021
In order to study the long-term loss law of anchorage force and the calculation method of prestress loss of anchorage force, a calculation method of the prestress loss of anchorage force was proposed to account for three factors.
FENG Zhong-ju, JIANG Guan, ZHAO Rui-xin, LONG Hou-sheng , WANG Zheng-bin, ZHANG Zheng-xu   +5 more
doaj   +1 more source

Pretensioned BFRP reinforced concrete beams: Flexural behaviour and estimation of initial prestress losses [PDF]

MATEC Web of Conferences, 2019
Fibre Reinforced Polymers (FRP) are becoming a popular reinforcement option for RC elements mainly due to good strength to weight ratio and resistance to corrosion.
Pavlović Ana, Donchev Ted, Petkova Diana, Limbachiya Mukesh, Almuhaisen Refad   +4 more
doaj   +1 more source

Evaluation of Prestress Loss Distribution during Pre-Tensioning and Post-Tensioning Using Long-Gauge Fiber Bragg Grating Sensors

Sensors, 2018
Prestress loss evaluation in prestressed strands is essential for prestressed structures. However, the sensors installed outside the duct can only measure the total prestress loss.
Sheng Shen, Yao Wang, Sheng-Lan Ma, Di Huang, Zhi-Hong Wu, Xiao Guo   +5 more
doaj   +1 more source

Spiral Deployment of Optical Fiber Sensors for Distributed Strain Measurement in Seven-Wire Twisted Steel Cables, Post-Tensioned against Precast Concrete Bars

Sensors, 2022
On-time monitoring and condition assessments of steel cables provide mission-critical data for informed decision making, ensuring the structural safety of post-tensioned concrete structures.
Yanping Zhu, Genda Chen
doaj   +1 more source

Full-Scale Prestress Loss Monitoring of Damaged RC Structures Using Distributed Optical Fiber Sensing Technology

Sensors, 2012
For the safety of prestressed structures, prestress loss is a critical issue that will increase with structural damage, so it is necessary to investigate prestress loss of prestressed structures under different damage scenarios.
Chunguang Lan, Zhi Zhou, Jinping Ou
doaj   +1 more source

Verification of Actual Prestressing in Existing Pre-Tensioned Members

Applied Sciences, 2021
In the case of prestressed concrete structures, information about the actual state of prestressing is an important basis for determining their load-carrying capacity as well as remaining service life.
Jakub Kraľovanec, František Bahleda, Jozef Prokop, Martin Moravčík, Miroslav Neslušan   +4 more
doaj   +1 more source

Analysis of Short-Term Prestress Losses in Post-tensioned Structures Using Smart Strands

International Journal of Concrete Structures and Materials, 2022
The proper estimation of prestressing force (PF) distribution is critical to ensure the safety and serviceability of prestressed concrete (PSC) structures. Although the PF distribution can be theoretically calculated based on certain predictive equations,
Sang-Hyun Kim, Sung Yong Park, Sung Tae Kim, Se-Jin Jeon   +3 more
doaj   +1 more source

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
Boukendakdji, M., Touahmia, M., Achour, M.   +2 more
openaire   +3 more sources

Evaluation of concrete linear creep in determination of stress state and steel prestress losses in concrete members/Betono tiesinio valkšnumo įvertinimas, nustatant gelžbetoninių elementų įtempimų būvį ir armatūros išankstinio įtempimo nuostolius

Journal of Civil Engineering and Management, 1999
Determination of stress-strain state imposed by concrete linear creep and specification of steel prestress losses in linear prestressed concrete member is discussed in this article.
Robertas Balevičius, Eugedijus Dulinskas   +1 more
doaj   +1 more source

Prestressed Concrete Box Girder with High-Capacity Strands-Monitoring and Analysis during Fabrication

Buildings, 2022
Despite the attractive merits of high-capacity strands, the application in bridge girders is limited due to concerns, including concrete cracking, excessive stress, and cambers.
Xin Jiang, Xinlin Ban, Lin Ma, Yonghua Su, Qi Cao, Zhouyu Zhang, Jichao Guo   +6 more
doaj   +1 more source