Failure analysis and performance of compact and slender carved stone walls under compression and seismic loading by the FEM approach

Preciado, Adolfo; Sperbeck, Silvio T.

doi:10.1016/j.engfailanal.2018.11.009

Cited by 24 publications

(6 citation statements)

References 27 publications

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“…Dynamic characteristics are inherent properties of the structure itself, and changes in dynamic characteristics such as natural frequency (ω) and damping ratio (ζ) can re ect changes in the stiffness of the structure before and after loading (Preciado et al 2019;Pelà et al 2013). After loading each PGA, frequency-sweep with white noise obtained the natural frequency of the model, and used the half-power bandwidth calculation method to achieve the model damping ratio.…”

Section: Dynamic Characteristicsmentioning

confidence: 99%

Experimental seismic performance of a reduce-scale stone masonry loess cave with traditional buildings

Zhao

Xue

Zhang

2022

Bull Earthquake Eng

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The seismic behavior of the independent type of a stone masonry loess cave (SMLC) is examined. A tri-directional shake table test was employed on 1:4 reduced-scale specimen of SMLC. The specimen represented a typical traditional dwelling of the loess region in China, consisting of unreinforced masonry walls and inner loess, without any seismic treatment. The dynamic parameters directly measured by the test include the acceleration response, displacement response of each key position of the stone masonry loess cave, and the detailed record of the damage form of the structure under each loading. The analysis results indicated that the simpli ed model design method not only satis ed the main similarity relationship of the reduced-scale structure shaking table test, but also achieved excellent test results. Through the calculation results to determine the torsion angle of the node and the deformation between the layers, corresponding strengthening measures could be proposed for the life extension protection of this traditional building. Finally, according to the analysis of the test results, the damage state and damage level of the prototype of the SMLC is established.

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Section: Dynamic Characteristicsmentioning

confidence: 99%

Experimental seismic performance of a reduce-scale stone masonry loess cave with traditional buildings

Zhao

Xue

Zhang

2022

Bull Earthquake Eng

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“…Los empujes laterales (i.e. fuerzas de inercia) generan zonas de tensión que agrietan a la mampostería, inclusive ante esfuerzos pequeños y sismos de mediana intensidad ( [7]). Las grietas se propagan de forma muy rápida, y por falta de una integridad estructural, los elementos constructivos se separan en macro-bloques que fallan de forma frágil o casi-frágil dependiendo de la dirección y magnitud de la carga.…”

Section: Caracterización Mecánicaunclassified

Monitoring and diagnosis of historical masonry buildings and future perspective = Monitoreo y diagnóstico de edificios históricos de mampostería y perspectiva futura

Preciado

Colmenero

2021

BMA

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Historical buildings still existing in different parts of the world were constructed with unreinforced masonry and have an acceptable capacity to transmit vertical loading, but they are very vulnerable against horizontal loading induced by earthquakes. In order to protect these buildings belonging to the patrimony of the humanity from this hazard, we need to understand the construction materials, structural elements and loading transmission mechanism. Moreover, to rehabilitate or retrofit them, it is necessary to develop an understanding process of the structure though monitoring and in-situ/laboratory experimental tests to stablish a diagnosis. The structural monitoring campaigns are helpful to investigate the mechanical and dynamic properties of the building. The use of installed thermal cameras and micro-sensors at strategic parts of the historical buildings represent a very interesting and non-destructive option to measure different parameters constantly and for long periods of time. The present paper aims at briefly describing the different involved processes in the monitoring and structural diagnosis of historical buildings which is fundamental in order to preserve them against the effects of earthquakes by means of rehabilitation works and strengthening. Moreover, it is presented a future perspective about non-destructive and non-invasive experimental tests and diagnosis with the use of new technologies.ResumenLos edificios históricos que aún existen en diferentes partes del mundo fueron construidos con mampostería no reforzada y tienen capacidad aceptable para transmitir cargas verticales, pero son muy vulnerables ante cargas laterales inducidas por sismos. Para proteger de esta amenaza a estas edificaciones que forman parte del patrimonio de la humanidad, debemos de entender los materiales constructivos, elementos estructurales y su mecanismo de transmisión de cargas. Para decidir entre rehabilitar o reforzar, se debe de realizar un proceso de entendimiento de la estructura a través de un monitoreo y pruebas experimentales en sitio y en laboratorio que permitan generar un diagnóstico. Los monitoreos estructurales sirven para investigar sus propiedades mecánicas y dinámicas. El uso de cámaras térmicas y micro-sensores en puntos estratégicos de los edificios históricos representan una opción muy interesante y no destructiva para medir diferentes parámetros de forma constante y por largos periodos de tiempo. El presente artículo tiene como objetivo describir de forma puntual los diferentes procesos involucrados en el monitoreo y diagnóstico estructural de edificios históricos que resulta fundamental para poder conservarlos ante los efectos de los sismos por medio de trabajos de rehabilitación y refuerzo. Además, se presenta una perspectiva futura sobre pruebas experimentales y diagnósticos no destructivos ni invasivos con el uso de nuevas tecnologías.

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“…When the direction of the external load is oblique to the axis of the engineering structure, the oblique loading path appears. In this situation, the engineering structure is subjected to both compressive and shear loads, for instance, inclined layered rock mass in the process of excavation [1], soil sandbags used in foundation reinforcement [2], concrete piles reinforced by stratum [3], flexible piles in rock anchorage [4], reinforced concrete walls [5] and many constructions with building masonry [6], which would be subjected to combined compression-shear loading caused by the dip of layered rock mass, induced stress, and earthquakes. Therefore, it can be said that engineering structures are subjected to combined compression-shear loads everywhere.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis for Stability Evaluation of Rock Mass Engineering Structure under Combined Compression-Shear Loading: A Case Study of Inclined Pillar

Sun

Luo

et al. 2021

Applied Sciences

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An inclined pillar is a typical support structure under compression and shear loads for underground mining. The shear load caused by the inclination of the ore-body affects the bearing capacity of the pillar. At present, there is no systematic investigation on the influence of shear load on the stress state evolution and bearing capacity of the inclined pillar. Additionally, there is still a lack of effective evaluation of the bearing capacity of the inclined pillar in the presence of additional shear load. In this research, the theoretical analysis method is used to solve these problems. First, the compressive and shear load components on the inclined pillar were calculated by the tributary area method, and the average stress state of the inclined pillar, considering the influence of the shear load, was characterized by a series of generalized stress circles. The factors that affect the shear load, such as the area extraction ratio, the inclination of the ore-body, and the in-situ stress ratio, were analyzed, and it reveals that there are three kinds of stress paths of the inclined pillar and their trajectories are straight line, circle, and curve, respectively. Then, a shear strength model was proposed to evaluate the bearing capacity of inclined pillars. The expression of this model is multiplied by a vertical pillar strength model and a dimensionless coefficient that is named the contribution factor of shear load (CFSL). Some cases of inclined pillars were employed to verify the rationality of this model. Finally, the factors that affect the bearing capacity of pillars were analyzed. This investigation presents that the shear load affects the stress path and determines the bearing capacity of the pillar. Therefore, the shear load should not be neglected in pillar design and stability analysis.

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Failure analysis and performance of compact and slender carved stone walls under compression and seismic loading by the FEM approach

Cited by 24 publications

References 27 publications

Experimental seismic performance of a reduce-scale stone masonry loess cave with traditional buildings

Experimental seismic performance of a reduce-scale stone masonry loess cave with traditional buildings

Monitoring and diagnosis of historical masonry buildings and future perspective = Monitoreo y diagnóstico de edificios históricos de mampostería y perspectiva futura

Theoretical Analysis for Stability Evaluation of Rock Mass Engineering Structure under Combined Compression-Shear Loading: A Case Study of Inclined Pillar

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