DESIGN OF SHELL STRUCTURES
Stampa
Enrollment year
2020/2021
2021/2022
Regulations
DM270
ICAR/09 (CONSTRUCTION TECHNIQUES)
Department
DEPARTMENT OF CIVIL ENGINEERING AND ARCHITECTURE
Course
CIVIL ENGINEERING
Curriculum
Strutturistico
Year of study
Period
1st semester (27/09/2021 - 21/01/2022)
ECTS
6
Lesson hours
45 lesson hours
Language
Italian
Activity type
WRITTEN AND ORAL TEST
Teacher
Prerequisites
Basics in reinforced concrete and steel structures design.
Learning outcomes
Aim of the course is to better understand the behaviour of two and three dimensional shell structures. Mainly to: - analyse, modelling and verify plate structures such as rectangular, square and circular plates. Reinforcement design and crack verification; elastic and elasto-plastic buckling analysis will be done; - calculate cylindrical shells (tanks, pipes and silos) using membrane and bending formulation; - evaluate the ring stiffners used to connect the wall with the roof; - analyse spherical cup (dome). Ordinary reinforced and precast concrete and steel structures will be considered.
Course contents
The may goal in studying a shell course is to reach the ability to analyse and design a shell from the bottom plate to the wall and at the end the roof with the ring stiffeners. Here are the schedule of the course:

plate
Design of reinforced concrete plate moving from the classical Lagrange-Sophie Germain equation; analytical solution; evaluation of thickness and reinforcement details;

tanks
Analysis and design of cylindrical shells such as tank, pipes an silos. Membrane and bending solutions. Design reinforcement, crack verification. Elatic and elatoplastic verification for steel tank;

Ring
Analysis and design of horizontal and vertical ring stiffners. Reinforced concrete and steel ring. Analytical solution for prestressed or postensioned reinforced concrete ring.

Dome
Analysis and design of spherical dome.

Seismic analysis of tanks
Some introduction in earthquake analysis of tanks. Equivalent mechanical models, Impulsive and convective components of the motion. Shear and overturning moment.
Teaching methods
Lessons (hour/year in classroom): 45
G.M. Calvi, R. Nascimbene. Progettare i Gusci. IUSSPRESS (ISBN: 978-88-6198-061-7). http://www.iusspress.it/pc/viewPrd.asp?idcategory=7&idproduct=138.
Assessment methods
Written and oral examination at the end of the course.
Further information
Sustainable development goals - Agenda 2030