Structural Monitoring of the Mexico City Cathedral (1990-2014)

Sánchez, Abraham R.; Meli, Roberto; Chávez, Marcos M.

doi:10.1080/15583058.2015.1113332

Cited by 14 publications

(11 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The slope of the identified trend line is then used as an estimate of the evolution rate of the structural parameter in question. Although this method has been used successfully in the past to assess ongoing damage mechanisms in several heritage structures, 22,24,31,42 it can easily be biased by asymmetry caused by the position of the monitoring period in relation to seasonal cycles. Moreover, because it involves fitting a straight line to an evolution, which is clearly not linear, it provides no means of assessing the quality of the fit.…”

Section: Linear and Nonlinear Regression Of Time Seriesmentioning

confidence: 99%

Automated data analysis for static structural health monitoring of masonry heritage structures

Makoond

Pelà

Molins

et al. 2020

Struct Control Health Monit

View full text Add to dashboard Cite

Summary Masonry heritage structures are often affected by slow irreversible deterioration mechanisms that can jeopardise structural stability in the foreseeable future. Static structural health monitoring (SHM), aimed at the continuous measurement of key slow‐varying parameters, has the potential to identify such mechanisms at a very early stage. This can greatly facilitate the implementation of adequate preventive and remedial measures, which can be critical to ensure that such structures are preserved for generations to come. However, because monitored parameters usually experience reversible seasonal variations of the same order of magnitude as changes caused by active mechanisms, identification of the latter is often a difficult task. This paper presents a fully integrated automated data analysis procedure for complete static SHM systems utilising dynamic linear regression models to filter out the effects caused by environmental variations. The method does not only produce estimated evolution rates but also classifies monitored responses in predefined evolution states. The procedure has successfully been used to identify vulnerable areas in two important medieval heritage structures in Spain, namely, the cathedral of Mallorca and the church of the monastery of Sant Cugat.

show abstract

Section: Linear and Nonlinear Regression Of Time Seriesmentioning

confidence: 99%

Automated data analysis for static structural health monitoring of masonry heritage structures

Makoond

Pelà

Molins

et al. 2020

Struct Control Health Monit

View full text Add to dashboard Cite

show abstract

“…The analysis of large monumental structures subjected to differential ground movement is a challenging subject of study. The challenge mainly arises from geometric complexity and sheer size, problems only partially alleviated by a detailed geometric survey, material property determination and the definition of the applied deformation load profile through concerted monitoring efforts [1]. It is, however, a worthwhile endeavor in service of estimating the risk of damage or collapse and designing effective intervention strategies for repair and strengthening.…”

Section: State Of the Artmentioning

confidence: 99%

Numerical Modeling of a Church Nave Wall Subjected to Differential Settlements: Soil-Structure Interaction, Time-Dependence and Sensitivity Analysis

Drougkas

Verstrynge

Szekér

et al. 2019

International Journal of Architectural Heritage

View full text Add to dashboard Cite

Historic masonry structures are particularly sensitive to differential soil settlements. These settlements may be caused by deformable soil, shallow or inadequate foundation, structural additions in the building and changes in the underground water table due to the large-scale land use change in urban areas.This paper deals with the numerical modeling of a church nave wall subjected to differential settlement caused by a combination of the above factors. The building in question, the church of Saint Jacob in Leuven, has suffered extensive damage caused by centuries-long settlement. A numerical simulation campaign is carried out in order to reproduce and interpret the cracking damage observed in the building.The numerical analyses are based on material and soil property determination, the monitoring of settlement in the church over an extended period of time and soil-structure interaction. A sensitivity study is carried out, focused on the effect of material parameters on the response in terms of settlement magnitude and crack width and extent.Soil consolidation over time is considered through an analytical approach. The numerical results are compared with the in-situ observed pathology and with an analytical damage prediction model.

show abstract

“…One of the buildings that encompasses the most architectural conservation and restoration activities, due to their high patrimonial value, are churches [26][27][28] and caverns with Rock Arts [29]. No contact with the object is of great importance when the surface to be restored contains works of art (usually pictorial).…”

Section: Introductionmentioning

confidence: 99%

Cultural Heritage Restoration of a Hemispherical Vault by 3D Modelling and Projection of Video Images with Unknown Parameters and from Unknown Locations

et al. 2021

View full text Add to dashboard Cite

Reverse engineering applied to architectural restoration for the reconstruction of structural surfaces depends on metric precision. Sometimes there are elements on these surfaces whose value is even higher than the building itself. This is the case for many churches whose ceilings have pictorial works of art. Reconstruction requires the existence of some identifiable remainder and/or a surface geometry that enables mathematical development. In our case, the vault has an irregular hemispherical geometry (without possible mathematical development), and there are no significant remains of the painting (which was destroyed by a fire). Through the 3D modelling of the irregular vault and two historic frames with a camera of unknown geometry, an inverse methodology is designed to project the original painting without metric deformations. For this, a new methodology to locate the camera positions is developed. After, a 3D virtual mathematical model of the complete image on the vault is calculated, and from it, partial 3D virtual images are automatically calculated depending on the variable unknown positions of the video cannons (distributed along the upper corridor of the apse) that will project them (visually forming a perfect complete 3D image).

show abstract

Structural Monitoring of the Mexico City Cathedral (1990-2014)

Cited by 14 publications

References 1 publication

Automated data analysis for static structural health monitoring of masonry heritage structures

Automated data analysis for static structural health monitoring of masonry heritage structures

Numerical Modeling of a Church Nave Wall Subjected to Differential Settlements: Soil-Structure Interaction, Time-Dependence and Sensitivity Analysis

Cultural Heritage Restoration of a Hemispherical Vault by 3D Modelling and Projection of Video Images with Unknown Parameters and from Unknown Locations

Contact Info

Product

Resources

About