A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract Beautiful domes have been built firstly by Mycenaeans and later by Romans and Byzantines; domes were practically neglected in the Middle Ages, later rediscovered by the Renaissance and Baroque architecture. Following the approach outlined in the previous section, this chapter firstly deals with the analysis of membrane stresses occurring in rotational shells that describe, with sufficient accuracy, the initial un-cracked stress state of the masonry dome. Later, the masonry dome probably cracks when the tension stresses in the hoop rings near the springing will reach the masonry’s weak tensile strength, usually fading in the course of time. The initial membrane equilibrium is thereby lost and meridian cracks will arise and spread along the dome. The emergence of thrust is the main consequence of cracking of the hemispherical domes. The occurrence of this thrust yields a subsequent deformation of the supporting structures and the dome, as a rule, activates its minimum thrust state. The research of the dome thrust is the main subject of the chapter and it will be searched both by static and kinematic approaches: in this last case as maximum thrust among all the kinematical ones. In addition to the hemispherical dome with constant thickness, four outstanding examples of actual masonry domes are then analyzed in detail: the ancient Mycenaean tholoi, the Pantheon, the dome of St. Maria del Fiore in Florence and the St. Peter dome in Vatican.
Abstract Beautiful domes have been built firstly by Mycenaeans and later by Romans and Byzantines; domes were practically neglected in the Middle Ages, later rediscovered by the Renaissance and Baroque architecture. Following the approach outlined in the previous section, this chapter firstly deals with the analysis of membrane stresses occurring in rotational shells that describe, with sufficient accuracy, the initial un-cracked stress state of the masonry dome. Later, the masonry dome probably cracks when the tension stresses in the hoop rings near the springing will reach the masonry’s weak tensile strength, usually fading in the course of time. The initial membrane equilibrium is thereby lost and meridian cracks will arise and spread along the dome. The emergence of thrust is the main consequence of cracking of the hemispherical domes. The occurrence of this thrust yields a subsequent deformation of the supporting structures and the dome, as a rule, activates its minimum thrust state. The research of the dome thrust is the main subject of the chapter and it will be searched both by static and kinematic approaches: in this last case as maximum thrust among all the kinematical ones. In addition to the hemispherical dome with constant thickness, four outstanding examples of actual masonry domes are then analyzed in detail: the ancient Mycenaean tholoi, the Pantheon, the dome of St. Maria del Fiore in Florence and the St. Peter dome in Vatican.
Masonry Vaults: Domes
Como, Mario (author)
2nd ed. 2016
2016-01-01
88 pages
Article/Chapter (Book)
Electronic Resource
English
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