optimum design of precast prestressed concrete structural

optimum design of precast prestressed concrete structural

PDF 61 Optimization in the Design of Prestressed Concrete

to design post-tensioned, pre-tensioned I-girder concrete bridges in order to reduce the total cost of the construction and installation [8]. Sirca Jr and Adeli (2005) presented the total cost optimization of precast, prestressed concrete I-beam bridge systems [9]. For optimum design of pre-stressed concrete beams

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Structural behavior of prestressed SCC hollow core slabs

The properties of standard tendons used by the precast plant for prestressed concrete conform to the ASTM A416/A416M for low relaxation strands. In this study, the prestressing strands used were 9.5 mm, 12.7 mm and 15.2 mm in nominal diameter with a reported ultimate strength of 1862 MPa, and a modulus of elasticity of 193 GPa.

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Heuristics in optimal detailed design of precast road

1. Introduction. Precast-prestressed concrete (PPC), that is, pretensioned concrete beams with cast-in situ slabs, has been commonly used by designers when building road bridges .In this context, structural engineers have taken advantage of precast technology by specifying designs that utilize standard beams of comparatively short spans, typically ranging from 10 to over 40 m.

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PDF) DESIGN OPTIMIZATION OF PRECAST-PRESTRESSED CONCRETE

In this paper, the influence of steel fiber-reinforcement when designing precast-prestressed concrete (PPC) road bridges with a double U-shape cross-section is studied through heuristic optimization. A hybrid evolutionary algorithm (EA) combining a

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Optimum topology and shape design of prestressed concrete

The purpose of this study is to optimize the topology and shape of prestressed concrete bridge girders. An optimum design approach that uses a genetic algorithm (GA) for this purpose is presented. The cost of girders is the optimum design criterion. The design variables are the cross-sectional dimensions of the prefabricated prestressed beams, the cross-sectional area of the

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Optimum design of prestressed concrete beams using

the optimum design of prestressed concrete beams require efficient mechanisms for handling constraints as well as powerful searching strategies; the ICDE algorithm implements a reliable mechanism for finding the feasible region promptly, and its modified differential evolution based strategy performs efficiently;

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Prestressed Concrete Problems And Solutions

Finite Element Analysis of Prestressed Concrete Structures Using Post-Tensioning SteelIntroduction to Optimum DesignSelected Water Resources AbstractsProblems & Solutions Prestressed Concrete, 2eSelf-consolidating Concrete for Precast, Prestressed Concrete Bridge ElementsThe Problem of Movement and Some

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PDF Manual for Quality Control for Structural Precast Concrete

The manual was developed for plant-produced, precast concrete members, or precast, prestressed concrete members manufactured by the process of pretensioning, post-tensioning, or a combination of the two methods. The principles established herein are, however, applicable to site-cast precast concrete or prestressed concrete.

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A Simplified Design Procedure for Precast Prestressed

A Simplified Design Procedure for Precast Prestressed Concrete Piling in Areas of High Seismicity to Include the Effects of Pile Buckling. This paper presents a unified approach for designing precast prestressed concrete piling in areas of high seismicity where soil liquefaction and/or loss of lateral support are design considerations.

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Quality Control and Quality Assurance of Precast

Precast/prestressed concrete members and structural precast concrete members produced under this program may be accepted at the jobsite without additional inspection or testing, provided they arrived properly documented and undamaged. Precast/prestressed concrete members and structural precast concrete members that are used in Department work

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2021 PCI Design Award Winners - Creative Precast Concrete

The Precast/Prestressed Concrete Insitute (PCI) celebrates this fact with award competitions year-round. Recently the institute announced the winners of the 2021 PCI Design Awards.

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