A numerical study to evaluate dynamic responses of voided

The prestressed concrete railway sleepers (or railroad ties), which are installed in railway track systems as the crosstie have several structural components to withstand loading from using a series of spring. In this study, the sleeper behaviour is stressed so that very small stiffness values were assigned to these springs. The support

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Long-Term Behavior of Prestressed Composite Beams at

Jun 06,  · However, most of the research work conducted on prestressed steel–concrete composite beams has focused on short-term behavior; research findings on the long-term behavior are scarce in the literature. For the wide-scale use of prestressed composite beams in civil engineering applications, the long-term behavior must be investigated.

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Publications | FHWA - Transportation

Fatigue Behavior of an Ultra-High Performance Concrete I-Girder: Justin Ocel and Benjamin Graybeal: 2007: Proceedings of the Precast/Prestressed Concrete Institute National Bridge Conference, Phoenix, October 2007, p. 18. Structural Behavior of Ultra-High Performance Concrete Prestressed I-Girders: Benjamin Graybeal: 2006: FHWA Report HRT-06-115

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Pci Design Handbook Precast And Prestressed Concrete 5th

a firm understanding of the behavior of prestressed concrete and how it relates to design based on the ACI Building Code. It presents the fundamental behavior of prestressed concrete and then adapts this to the design of structures. The book focuses on prestressed concrete

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Finite Element Method for Post-tensioned Prestressed

In addition to the study of modeling techniques, three practical engineering problems were investigated through the proposed FEM. The investigated problems include: (1) punching shear failure of two-way PT prestressed concrete slabs; (2) prestress increment in the prestressing tendon at the service stage of structural members; and (3) influence of the PT systems (i.e., bonded vs. unbonded) on

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Guidelines for the Dynamic Behaviour of the Prestressed

Dec 10,  · Dynamic behaviour of prestressed concrete floor systems have several numbers of modes, but only some modes are considered in this discussion. In prestressed concrete floor systems, the shape of the basic mode can be created by maximum deflection due to

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Ultimate strength behavior of prestressed concrete beams

Oct 04,  · This paper investigates the ultimate strength behaviours of the unbonded prestressed concrete (PC) beams at cryogenic temperatures that aims to promote the applications of PC structures in cryogenic environments. Nineteen unbonded PC beams with different tension control stresses (0.4, 0.6, 0.75f ptk) were tested at 20, −40, −70 and −100 °C. The structural performances of the unbonded

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PDF A Numerical Model of Externally Prestressed Concrete Beam

An algorithm has been developed to determine the structural behaviour at the deviator points in an externally pre-stressed beam. The pre- dicted results showed that the structural behavior of externally prestressed concrete beams could be satisfactorily predicted from zero loading stage up to the propor-

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PDF Structural behaviour of prestressed concrete sleepers

1 Structural behaviour of prestressed concrete sleepers produced with High Performance Recycled Aggregate Concrete Andreu Gonzalez-Corominas1, Miren Etxeberria1*, Ignasi Fernandez2 1 Department of Civil and Environmental Engineering, Polytechnic University of Catalonia, Jordi Girona, 1-3 B1 building, Barcelona 08034, Spain.

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Progressive failure of prestressed concrete sleepers

Prestressed concrete sleepers (or railroad ties) are among the major and the most common structural components of railway track structures. Their main duty is to carry and transfer the wheel loads from the rails to the ground. In general, railway tracks suffer with the extreme loading conditions, which are attributable to the train operations with either wheel or rail abnormalities such as

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PDF Prestress Losses in Pretensioned Concrete Structural Members

prestressed concrete structural members is the estimation of the loss of prestress over an extended period of time. In pretensioned members, this loss of prestress is primarily attributed to four causes: elastic shortening of the member due to prestress~ shrink-age of concrete, creep·deformation in concrete, and relaxation of prestressing steel.

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Structural Concrete Journal Impact IF 2020- | Analysis

Structural Concrete. The 2019- Journal Impact IF of Structural Concrete is 2.174, which is just updated in 2020. The highest Journal Impact IF of Structural Concrete is 2.174. The lowest Journal Impact IF of Structural Concrete is 0.27. The total growth rate of Structural Concrete IF is 705.2%.

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Development of Geopolymer Concrete on Railway Pre-Stressed

Jul 13,  · The emphases of this paper are placed on the static behaviour and rotational capacity of a prestressed concrete sleeper under hogging moment. An Indian manufactured concrete sleeper was used in the experiment in accordance with Indian Standards, IS:2386-1963. LVDT was mounted at the middle span for measuring the deflection.

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Prestressed concrete - Designing Buildings Wiki

Prestressed concrete - Designing Buildings Wiki - Share your construction industry knowledge. Prestressed concrete is a structural material that allows for predetermined, engineering stresses to be placed in members to counteract the stresses that occur when they are subject to loading. It combines the high strength compressive properties of concrete with the high tensile strength of steel.

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Research Article Analysis of the Influence of Cracked

e principal causes of cracking in prestressed concrete sleepers are the dynamic loads induced by track irregularities and elasticity that includes the behaviour of the concrete and the prestressing tendons is a validated technique to simplify the model [ ]. of the structural behaviour. 3. Track Model

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Ultimate load analysis of prestressed concrete reactor

en] A method of analysis is presented, by which progressive fracture processes in axisymmetric prestressed concrete pressure vessels during increasing internal pressure can be evaulated by means of a continuum calculation considering a general material law. Formulations used in the analysis concerning material behaviour are derived on one hand from appropriate results of testing small

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