Design of Double Curvature Masonry Vaults by Eladio Dieste

2009 ◽  
Author(s):  
D. Theodossopoulos ◽  
R. Pedreschi
Keyword(s):  
Double Curvature ◽  
Masonry Vaults

Modeling of Masonry Vaults as Equivalent Diaphragms

2014 ◽  
Vol 628 ◽  
pp. 185-190 ◽  
Author(s):  
Pier Silvio Marseglia ◽  
Francesco Micelli ◽  
Marianovella Leone ◽  
Maria Antonietta Aiello
Keyword(s):  
Seismic Response ◽  
Complex Geometry ◽  
Structural Parameters ◽  
Masonry Buildings ◽  
Strategic Objective ◽  
Double Curvature ◽  
Proposed Model ◽  
Plane Element ◽  
Side Walls ◽  
Masonry Vaults

Recent seismic events that occurred in Italy revealed the vulnerability of masonry buildings with vaulted roof with respect to horizontal forces. Assuming that a large part of the architectural heritage is made by vaulted masonry buildings, measures aimed at improving the seismic response of such structures is a strategic objective. In the present work the behavior of masonry vaults is modeled through equivalent plane element (diaphragm), and a modeling procedure is proposed for design. Different types of vaulted structural roofs were studied, considering geometries with simple and double curvature. An extensive parametric analysis was conducted by varying significant structural parameters: vault thickness, in-plane dimensions, constraint conditions and presence or not of side walls. In the proposed model the complex geometry of the vault is replaced by an equivalent plate, with the intent of modeling the entire building as a frame being equivalent to the real structural with respect to the seismic response. The equivalent plate is defined as an element generally orthotropic with the same in-plane dimensions and same thickness of the vault from which it is derived.

Research on the Strengthening of Double-curvature Arch Bridges

2003 ◽  
Vol 87 (9) ◽  
pp. 207-213
Author(s):  
Zhiguo Zhang ◽  
Tiejun Lu ◽  
Jingchun Wang
Keyword(s):  
Double Curvature ◽  
Arch Bridges

scholarly journals From Stress to Shape: Equilibrium of Cloister and Cross Vaults

2021 ◽  
Vol 11 (9) ◽  
pp. 3846
Author(s):  
Andrea Montanino ◽  
Carlo Olivieri ◽  
Giulio Zuccaro ◽  
Maurizio Angelillo
Keyword(s):  
Error Function ◽  
Membrane Surface ◽  
Equilibrium Analysis ◽  
Test Cases ◽  
Order Partial Differential Equation ◽  
Negative Semidefinite ◽  
Historical Heritage ◽  
Masonry Vaults ◽  
Membrane Shape ◽  
The Given

The assessment of the equilibrium and the safety of masonry vaults is of high relevance for the conservation and restoration of historical heritage. In the literature many approaches have been proposed for this tasks, starting from the 17th century. In this work we focus on the Membrane Equilibrium Analysis, developed under the Heyman’s theory of Limit Analysis. Within this theory, the equilibrium of a vault is assessed if it is possible to find at least one membrane surface, between the volume of the vaults, being in equilibrium under the given loads through a purely compressive stress field. The equilibrium of membranes is described by a second order partial differential equation, which is definitely elliptic only when a negative semidefinite stress is assigned, and the shape is the unknown of the problem. The proposed algorithm aims at finding membrane shapes, entirely comprised between the geometry of the vault, in equilibrium with admissible stress fields, through the minimization of an error function with respect to shape parameters of the stress potential, and then, with respect to the boundary values of the membrane shape. The application to two test cases shows the viability of this tool for the assessment of the equilibrium of existing masonry vaults.

Experimental Behavior of Masonry Vaults Strengthened with Thin Extradoxal or Intradoxal Layer of Fiber Reinforced Lime Mortar

2017 ◽  
Vol 747 ◽  
pp. 274-281 ◽  
Author(s):  
Natalino Gattesco ◽  
Ingrid Boem ◽  
Alessandra Gubana ◽  
Davide Menegon ◽  
Norman Bello ◽  
...  
Keyword(s):  
Thin Layer ◽  
Experimental Tests ◽  
Horizontal Load ◽  
Actual Behavior ◽  
Cyclic Tests ◽  
Lime Mortar ◽  
Numerical Investigations ◽  
The Third ◽  
Loading Patterns ◽  
Masonry Vaults

The results of a first experimental research program on masonry vaults strengthened by means of GFRP meshes embedded in a thin layer of lime mortar, are herein presented. The tests were designed to reproduce the pattern of a transversal horizontal load proportional to the vault self-weight. The typical simplified loading patterns generally used for the experimental tests concern concentrated vertical loads at the crown section or at 1/4 of the span, but some numerical investigations evidenced that these configurations are not able to reproduce the actual behavior and the effectiveness of the reinforcement. So a specific rig was designed to apply the horizontal load pattern.Solid brick masonry barrel vaults were considered (thickness 120 mm, arch span 4000 mm, arch rise/radius = 0.75). Three quasi-static cyclic tests were performed: the first concerned an unreinforced vault, the second a vault reinforced at the extrados through the application of a mortar coating reinforced with a GFRP mesh and the third reinforced at the intrados surface with the same technique. The experimental results demonstrated the technique effectiveness and the important increment of ductility of the vaults.

Blasting Excavation and Vibration Monitoring Design for Diversion Tunnel

2013 ◽  
Vol 639-640 ◽  
pp. 969-973
Author(s):  
Qi Gao Hu ◽  
Wei Feng Cui ◽  
Jing Wei Gao ◽  
Fei Wei Zhao ◽  
Qian Fu Liang
Keyword(s):  
Optimization Design ◽  
Theoretical Calculations ◽  
Concrete Block ◽  
Arch Dam ◽  
Vibration Monitoring ◽  
Jiangxi Province ◽  
Diversion Tunnel ◽  
Monitoring Design ◽  
Double Curvature ◽  
Blasting Excavation

Because of the local crack and seepage, a double curvature arch dam of concrete block in Jiangxi Province was urgently needed to strengthen, and the construction period was limited seriously. In order to solve the problem of drainage, a diversion tunnel about 24m must get throng in two weeks, and it is proved that the blasting excavation scheme is the only choice. Meanwhile, monitoring measurement must be taken to ensure the dam’s safety. In this article, the optimization design of blasting excavation and a vibration monitoring are completed and carried out respectively. Theoretical calculations and monitoring results showed that, those design schemes are scientific and rational, and disadvantageous effect of blasting vibration is under the control fully.

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