Results 151 to 160 of about 943 (198)
Electrical Resistance Activation of Embedded Fe-SMA Rebars in Pre-Cracked UHPFRC Beams: Internal Temperature Evolution and Calibrated Electro-Thermal Simulation. [PDF]
Materials (Basel)Tabrizikahou A +5 more
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Improving Shear Performance of Precast Concrete Segmental Beams Through Continuous Longitudinal Reinforcements Across Joints. [PDF]
Materials (Basel)Zou Y, Xu D.
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Effect of compression pre-force and web openings on torsional strength of UHPC hollow beams using numerical and mathematical modeling. [PDF]
Sci RepEl-Basiouny AM +2 more
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Identification of prestress force in a prestressed Timoshenko beam
Structural Engineering and Mechanics, 2008This paper presents a new identification approach to prestress force. Firstly, a bridge deck is modeled as a prestressed Timoshenko beam. The time domain responses of the beam under sinusoidal excitation are studied based on modal superposition. The prestress force is then identified in the time domain by a system identification approach incorporating ...
Z.R. Lu, J.K. Liu, S.S. Law
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Redevelopment of Prestressing Force in Severed Prestressed Strands
Journal of Bridge Engineering, 2011The flexural capacity rating of prestressed girders having severed or corroded strands often progresses by simply neglecting the contribution of the affected strands from the girder section and assessing the capacity. While this is an adequate approach at the affected section, it is conservative elsewhere along the span, assuming that fully bonded ...
Jarret Kasan, Kent A. Harries
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Prestress mediates force propagation into the nucleus
Biochemical and Biophysical Research Communications, 2005Several reports show that the nucleus is 10 times stiffer than the cytoplasm. Hence, it is not clear if intra-nuclear structures can be directly deformed by a load of physiologic magnitudes. If a physiologic load could not directly deform intra-nuclear structures, then signaling inside the nucleus would occur only via the mechanisms of diffusion or ...
Shaohua, Hu +3 more
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Determining the Remaining Prestress Force in a Prestressed Concrete Crosstie
2017 Joint Rail Conference, 2017The research presented herein focuses on determining the amount of internal prestressing force and bending resistance that is necessary to provide a durable long-term concrete railroad tie. In order to accomplish this, the researchers conducted a systematic evaluation of existing concrete ties that successfully withstood over 25 years of service in ...
James D. Scott +5 more
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Advanced Materials Research, 2012
The 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.
Jiang Lin Xu, Zhi Sun
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The 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.
Jiang Lin Xu, Zhi Sun
openaire +1 more source