Results 91 to 100 of about 943 (198)
Proceedings of International Structural Engineering and Construction, 2018 Straight tendons in pretensioned members can cause high-tensile stresses in the concrete extreme fibers at end sections because of the absence of the bending stresses due to self-weight and superimposed loads and the dominance of the moment due to prestressing force alone.
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, 1996 Prestress forces are often applied to concrete structures to create compressive stresses in regions that will be subjected to superposed tension stresses due to applied service loads. Often these prestress forces are applied using steel tendons that are imbedded in the structure and stressed in tension.
Pessiki, Stephen, Wang, Jinlu
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Experimental Study on Prestressing Force of Corroded Prestressed Concrete Steel Strands
Journal of Advanced Concrete Technology, 2022 Li, Jingyuan +3 more
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NONLINEAR FINITE ELEMENT ANALYSIS OF PRESTRESSED CONCRETE MEMBERS
مجلة النهرين للعلوم الهندسية, 2008 A finite element method of analysis is used to study the strength and behavior of prestressed concrete members under short-term and sustained load conditions. The degenerated assumed strain eight-node shell finite element is used with each node having
Hani M. Fahmi, Zubaidah A. Al-Bayati
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Comprehensive Numerical Modeling of Prestressed Girder Bridges under Low-Velocity Impact
BuildingsAccidental collisions involving over-height trucks that exceed vertical clearance limits and bridge superstructures frequently happen, resulting in compromised girders and potential threats to structural safety and performance.
Mohamed T. Elshazli +3 more
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The International Conference on Computational & Experimental Engineering and SciencesThe measurement of residue prestress force is one main issue for condition and performance assessment of prestressed concrete beam bridge. This paper proposes a vibration based parameter estimation technique for this purpose. Under given form external excitation, beam velocity responses at multiple points are collected firstly.
Jianglin Xu, Zhi Sun
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BuildingsTraditional internal support systems for deep foundation pits often suffer from issues such as insufficient stiffness, excessive displacement, and large support areas.
Xingui Zhang +8 more
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Updating the Reliability of Prestressed Bridges by Measurement of Prestressing Forces
, 1995 Les ponts précontraints sont soumis à des pertes de précontrainte dues au retrait et au fluage du béton et à la relaxation des aciers de précontrainte. Le BPEL procure des modèles prédictifs qui permettent de calculer des pertes à divers instants. Néanmoins, de nombreuses incertitudes sont attachées aux paramètres de ces modèles. Une stratégie possible
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, 2012 A bond analytical model is proposed in this paper. The model is capable of reproducing the bond stress developed between the steel and concrete, in precast prestressed elements, during the entire process of prestressing force release. The bond stress developed in the transmission zone, where the bond stress is not constant, is also obtained.
Benitez Baena, Jose Maria +1 more
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Flexural Behavior of Slender UHPC Prestressed Beams Without Passive Reinforcement. [PDF]
Materials (Basel)Navarro-Gregori J +4 more
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