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Reinforced and Prestressed Concrete I

Code:

MEC136

Sigla:

BAPE I

Áreas Científicas
Classificação	Área Científica
OFICIAL	Estruturas

Ocorrência: 2020/2021 - 2S

Ativa?	Yes
Unidade Responsável:	Mecânica e Estruturas
Curso/CE Responsável:

Ciclos de Estudo/Cursos

Sigla	Nº de Estudantes	Plano de Estudos	Anos Curriculares	Créditos UCN	Créditos ECTS	Horas de Contacto	Horas Totais
MEC	13	Study Plan	1	-	6	60	162

Língua de trabalho

Portuguese - Suitable for English-speaking students

Objetivos

It is intended that students become eligible for sizing of prestressed beams. Students must understand all procedures related to the security to the design limit states and service limit states of presstressed beams, including design and detail. Some basic knowledge about concrete structures are also revised to complement syllabus contents of Structural Concrete I (strut and tie models, punching shear and durability of concrete structures) and also intends to consolidate the knowledge about design of concrete columns and beams.

Resultados de aprendizagem e competências

Ability to:
- Design prestressed beams
- Design D regions through strut and tie models
- Design for durability

Modo de trabalho

Presencial

Programa

Introduction to presstressing. Concepts related to presstressing. Prestressing design of isostatic beams (generalities; materials; conception and pressizing and detailing). Tension losses (Instant: by friction, by concrete deformation and at anchorage. Loss over time: creep, shrinkage and relaxation). Verification of safety for ultimate limit states. Verification of security to limit states.
Models strut and tie: Zones of discontinuity and Bernoulli; calculation models, security checks, nodes; examples of models. Hyperstatic structures of presstressed concrete. Durability of concrete structures, with the analysis of the effects of carbonation, chlorides, corrosion, cracking, sulfates, alkalis and protective measures.

Bibliografia Obrigatória

FAVRE, R.; Dimensionnement des structures en béton: dalles, murs, colonnes et fondations - Traité de Génie Civil, EPFL, 1997
GOMES, A.; MARTINS, C.; VINAGRE, J.; Tabelas - Folhas da disciplina de Betão Armado e Pré- Esforçado II, IST/UTL
EuropeanCommittee for Standardisation; EN 1992-1-1 Eurocode 2: DesignofConcreteStructures - Part 1-1: General Rules and Rules for Buildings, CEN, 2004
Carla Marchão e Júlio Appleton.; ESTRUTURAS DE BETÃO I e II- FOLHAS DE APOIO ÀS AULAS, IST/UTL
CT 104 (ATIC); EN 206-1. Betão. Parte 1, Especificação, desempenho, produção e conformidade, IPQ, 2007
LNEC; E 464: Betões. Metodologia prescritiva para uma vida útil de projeto de 50 e de 100 anos face às ações ambientais, LNEC, 2007

Métodos de ensino e atividades de aprendizagem

Theoretical classes will be taught the theoretical component of the program of the course accompanied, where possible, the resolution of practical examples of application of the concepts.
Practical classes will be far-developing exercises sizing and monitoring of students.
In the years scaling up demand, whenever possible, that students make use of the most used tools in the labor market.

Tipo de avaliação

Distributed evaluation with final exam

Componentes de Avaliação

Designation	Peso (%)
Exame	100,00
Total:	100,00

Componentes de Ocupação

Designation	Tempo (Horas)
Estudo autónomo	109,50
Frequência das aulas	52,50
Total:	162,00

Fórmula de cálculo da classificação final

Assessment during the semester: Development of execises/assignements during the theoretical-practical lessons. Considerer for assessment the 10 best with a weighing of 10% each. 
1st/ 2nd call: 100% Exam
Extraordinary call: 100% Exam
Intercalar call: 100% Exam

Fraud mitigation procedures: in the scenario of continuous assessment, the exercises/assignements will be worked out during practical classes with lecturer supervision and hand out by the end of the class; in the case of assessment by final exam, the exam will be break down into small questions with limited time for solving each one. Different initial information for each question will be randomly distriduted.