Results 71 to 80 of about 24,656 (242)
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
Flexural performance of concrete‐filled steel tubular beams with wood chip aggregate
Structural Concrete, EarlyView.Abstract This study investigates the flexural performance of concrete‐filled steel tubular (CFST) beams with partial replacement of aggregates by wood chips (0%–25%) through experimental and numerical analysis. This study is novel in that it experimentally and numerically investigates the flexural behavior of CFST beams with partial replacement of ...
Mizan Ahmed +6 more
wiley +1 more source
Structural Concrete, EarlyView.Abstract Compression field approaches such as the Cracked Membrane Model with fixed, interlocked cracks (CMM‐F) are efficient tools for the mechanical modeling of reinforced concrete elements, providing the mechanical model σ=fε$$ \boldsymbol{\upsigma} =f\left(\boldsymbol{\upvarepsilon} \right) $$ required for finite element analyses.
Andreas Näsbom +2 more
wiley +1 more source
Applied and Computational Mechanics, 2007 Fibres in living cells carry the pre-existing tension (so-called prestress) even without external loading. By changing the prestress, cells are able to control actively their overall mechanical response; it is therefore an important element in cell elasticity.
Vychytil J., Holeček M., Moravec F.
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Pre‐failure behavior of continuous post‐tensioned and post‐grouted beam in case of tendon failure
Structural Concrete, EarlyView.Abstract Grouted tendons are a common solution for long‐span bridge structures. The grout provides bond and corrosion protection for prestressing steel. However, if the grouting is defective, corrosion of the prestressing steel may initiate and eventually lead to tendon failure.
Olli Asp +2 more
wiley +1 more source
Multi‐level fatigue reliability assessment of reinforced concrete railway bridges
Structural Concrete, EarlyView.Abstract This paper presents a multi‐level reliability framework for assessing the fatigue life of reinforced concrete (RC) railway trough bridges subjected to cyclic loading. The framework incorporates increasing levels of analytical complexity and real‐world data in four steps. First, an analytical model applies S–N curves and the Palmgren–Miner rule
Silvia Sarmiento +7 more
wiley +1 more source
Structural Concrete, EarlyView.Abstract Steel fiber reinforced concrete (SFRC) enhances the flexural capacity of flat slabs and, due to its effectiveness in statically redundant bi‐dimensional elements, represents a viable alternative to conventional reinforcement. Although numerous studies have investigated the flexural behavior of SFRC slabs with and without bonded reinforcement ...
Chiara Gaddi +2 more
wiley +1 more source
Structural Concrete, EarlyView.Abstract This study investigates the numerical modeling of internal tendon breaks in prestressed concrete structures and evaluates the key parameters affecting accuracy. A combined approach is followed, involving global sensitivity analysis via the Elementary Effects Method and subsequent model calibration using experimental data from distributed fiber‐
Aeneas Paul, David Sanio, Peter Mark
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Pulse waves in prestressed arteries
Bulletin of Mathematical Biology, 1987 The propagation of waves in an arterial wall which is subjected to large initial inflation and extension is considered. The wall is composed of incompressible, homogeneous, isotropic elastic materials and is sufficiently thick to be regarded as a thick hollow cylinder and not as a thin cylindrical shell.
ERBAY, HA, ERBAY, S, DEMIRAY, H
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Tuning frequency band gaps of tensegrity mass-spring chains with local and global prestress
International Journal of Solids and Structures, 2018 This work studies the acoustic band structure of tensegrity mass-spring chains, and the possibility to tune the dispersion relation of such systems by suitably varying local and global prestress variables.
A. Amendola +4 more
semanticscholar +1 more source