Numerical and Experimental Investigations of Reinforced Masonry Structures Across Multiple Scales

2018 ◽  
pp. 327-355
Author(s):  
Eleni N. Chatzi ◽  
Savvas P. Triantafyllou ◽  
Clemente Fuggini
Keyword(s):  
Multiple Scales ◽  
Experimental Investigations ◽  
Masonry Structures ◽  
Reinforced Masonry

scholarly journals Numerical Study on Crack Distributions of the Single-Layer Building under Seismic Waves

Complexity ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-16
Author(s):  
Fenghui Dong ◽  
Zhipeng Zhong ◽  
Jin Cheng
Keyword(s):  
Seismic Waves ◽  
Numerical Study ◽  
Single Layer ◽  
Experimental Tests ◽  
Masonry Structure ◽  
Original Model ◽  
Dynamic Responses ◽  
Masonry Structures ◽  
Reinforced Masonry ◽  
Longitudinal Cracks

This paper conducts a numerical simulation of the antiseismic performance for single-layer masonry structures, completes a study on crack distributions and detailed characteristics of masonry structures, and finally verifies the correctness of the numerical model by experimental tests. This paper also provides a reinforced proposal to improve the antiseismic performance of single-layer masonry structures. Results prove that the original model suffers more serious damage than the reinforced model; in particular, longitudinal cracks appear on bottoms of two longitudinal walls in the original model, while these cracks appear later in the reinforced model; a lot of cracks appear on the door hole of the original model, and no crack appears in the reinforced model till the end of seismic waves; seismic damage of walls in the reinforced model is obviously lighter than that in the original model; dynamic responses at all observed points of the reinforced masonry are obviously less than those of the original model. Strains at all positions of the reinforced model are obviously smaller than those of the original model. From macroscopic and microscopic perspectives, the computational results prove that the reinforced proposal proposed in this paper can effectively improve the antiseismic performance of the masonry structure.

Masonry Buildings' Seismic Failures

2019 ◽  
pp. 59-148
Author(s):  
Eftychia Apostolidi
Keyword(s):  
Residential Buildings ◽  
Structural Characteristics ◽  
Easy Access ◽  
Masonry Buildings ◽  
Masonry Structures ◽  
Construction Methods ◽  
Reinforced Masonry ◽  
Earthquake Resistant ◽  
The World ◽  
Earthquake Resistant Structures

<p>Masonry structures are probably the most popular and ancient type of buildings all over the world. Easy access of its constitutive materials, which are basically stones, bricks, and mortar (which varies from region to region), makes masonry one of the everlasting construction methods from small residential buildings to the most important ancient and historic monuments. <p>Some masonry buildings have proved to be resistant structures even in seismic prone areas, due to some specific structural characteristics that have been observed throughout the years and after many destructive earthquakes. In this chapter, an effort will be made to refer to and describe the most characteristic deficiencies in unreinforced and reinforced masonry buildings under seis-mic actions. Design recommendations for new earthquake-resistant structures will follow, and some retrofitting and strengthening strategies for existing masonry buildings will be proposed.

scholarly journals Studi per l’analisi storico-critica di un centro storico. Il caso di studio di Castel Camponeschi

X ◽  
2020 ◽  
Author(s):  
Ilaria Trizio ◽  
Stefano Brusaporci ◽  
Romolo Continenza ◽  
Pamela Maiezza ◽  
Alessandra Tata ◽  
...  
Keyword(s):  
Multiple Scales ◽  
Historical Context ◽  
Direct Analysis ◽  
Critical Study ◽  
Masonry Structures ◽  
Historic Center ◽  
Built Heritage ◽  
The Village ◽  
Urban Characteristics

Studies for the Historical-Critical Analysis of a Historical Center. The Case Study of Castel CamponeschiAim of the paper is the historical-critical study of Castel Camponeschi (aka Castello di Prata), a village at about 25 km from L’Aquila city (Italy), with peculiar urban characteristics –a herringbone pattern– probably founded in the thirteenth century and characterized by important phenomena of modification and stratification. The study roots on the direct analysis of the built heritage through the architectural surveying, realized at multiple scales from the urban settlement to the masonry structures. According to the morphology of the historic center, it could be traced to the process of new settlement foundation that characterized the territory –the border between the Papal State and the Frederic’s Empire first, and then the Angevin kingdom–. The analysis of the village requires both a correlation with the natural and anthropic historical context in which it is inserted and, a specific study of masonry equipments, characterized by the re-used of stone elements from the nearby Vestino-Roman town of Peltuinum.

Seismic Performance of CFRP Strengthened Unreinforced Masonry Structures

2011 ◽  
Vol 194-196 ◽  
pp. 1904-1907
Author(s):  
Sheng Li Yuan
Keyword(s):  
Flexural Strength ◽  
Seismic Performance ◽  
Crack Width ◽  
Unreinforced Masonry ◽  
Masonry Structures ◽  
Reinforced Masonry ◽  
Earthquake Performance

This paper studies the earthquake performance of strengthening unreinforced masonry structures with CFRP. Using CFRP reinforced masonry structures can substantially increase the ultimate flexural strength and resisted deformations of the walls and columns ,at the same time can also effectively dispersed the distribution of crack width of cracks and constraints.

Damage to masonry buildings caused by the 1995 Hyogo-ken Nanbu (Kobe, Japan) earthquake

1996 ◽  
Vol 23 (3) ◽  
pp. 797-807 ◽  
Author(s):  
Michel Bruneau ◽  
Koji Yoshimura
Keyword(s):  
Unreinforced Masonry ◽  
Masonry Buildings ◽  
Masonry Structures ◽  
Design Codes ◽  
Epicentral Area ◽  
The Past ◽  
Masonry Construction ◽  
Kobe Earthquake ◽  
Reinforced Masonry ◽  
A Minor

The seismic performance of the few masonry structures present in the Kobe area and subjected to the severe Hyogo-ken Nanbu earthquake is a minor concern when compared to the overwhelming damage suffered by other types of structures. However, in order to dispel the myth that masonry structures are nonexistent in Japan as well as a few other misconceptions, and for the sake of completeness within the concerted multipaper reporting effort on the Hyogo-ken Nanbu (Kobe) earthquake by the Canadian reconnaissance team which visited the epicentral area of this earthquake, a brief description of the past and present state of masonry construction in Japan is first presented, followed by a short description of the damage to unreinforced masonry buildings, masonry garden-walls, and nonstructural masonry elements, as observed by the authors during their visits to the Kobe area. Key words: earthquake, seismic, masonry, buildings, bearing walls, unreinforced masonry, reinforced masonry, failures, design codes.

scholarly journals Development of pseudo interface element for modelling of reinforced brick masonry

2017 ◽  
Vol 7 (1) ◽  
pp. 73-86
Author(s):  
Shashank Vasudeo Mehendale ◽  
Abhay Namdev Bambole ◽  
S Raghunath
Keyword(s):  
Brick Masonry ◽  
Experimental Investigations ◽  
Interface Element ◽  
Joint Interface ◽  
Experimental Protocol ◽  
Interface Elements ◽  
Reinforced Masonry ◽  
Material Stiffness ◽  
Novel Approach ◽  
Low Stiffness

Development of pseudo interface element for modelling of reinforced brick masonryABSTRACTStrength of reinforced masonry is influenced by interfaces between brick, mortar and reinforcement. Experimental protocol has been defined to characterise the behaviour of reinforced brick masonry joint, with reinforcement steel embedded in cement mortar 1:6. This is applicable for low-strength, low-stiffness brick masonry found. Experimental investigations show that bond between masonry and steel is not perfect. Considering critical bond mechanisms, an attempt is made to put-forth a novel approach for development of a pseudo interface element representing three different materials (viz. brick, mortar and reinforcement) and two interfaces (reinforcement-mortar (RM) interface and brick-mortar (BM) interface). Principles of classical Reinforced Concrete (RC) design can therefore be directly applied to reinforced masonry with the introduction of the proposed pseudo interface element.Keywords: reinforced masonry joint; interface element; masonry reinforcement bond behavior; pseudo interface material; stiffness of interface elements. Desarrollo de un pseudo-elemento de interfaz para el modelado de mampostería de ladrillo reforzado RESUMENLa resistencia de la mampostería reforzada está influenciada por las interfaces entre el ladrillo, el mortero y el refuerzo. Se ha definido un protocolo experimental para caracterizar el comportamiento de la junta de mampostería de ladrillo reforzado, con acero de refuerzo incrustado en mortero de cemento 1: 6. Esto es aplicable para la albañilería con ladrillos de baja resistencia y baja rigidez encontrada. Las investigaciones experimentales demuestran que el vínculo entre la mampostería y el acero no es perfecto. Teniendo en cuenta los mecanismos de enlace críticos, se intenta presentar un nuevo enfoque para el desarrollo de un elemento de pseudo-interfaz que represente tres materiales diferentes (ladrillo, mortero y refuerzo) y dos interfaces (de refuerzo y mortero (RM) y de mortero (BM)). Por lo tanto, los principios del diseño de concreto armado (RC) clásico pueden aplicarse directamente a la mampostería reforzada con la introducción del pseudo-elemento de interfaz propuesto.Palabras clave: articulación de mampostería reforzada; elemento de interfaz; comportamiento de enlace de refuerzo de mampostería; pseudo-material de interfaz; rigidez de los elementos de la interfaz. Desenvolvimento de um elemento pseudo-interface para modelagem reforçada alvenaria de tijoloRESUMOA resistência de alvenaria reforçada é influenciada pelas interfaces entre o tijolo, argamassa e de reforço. Definido um protocolo experimental para caracterizar o comportamento da placa reforçada alvenaria de tijolo com aço de reforço embebido em argamassa de cimento 1: 6. Isso se aplica a alvenaria de tijolo com baixa resistência e baixa rigidez encontrados. A pesquisa experimental mostra que a ligação entre a alvenaria e aço não é perfeito. Dada a mecanismos de ligação crítica, tenta apresentar uma nova abordagem para o desenvolvimento de um elemento de pseudo-relação representando três diferentes materiais (tijolos, argamassa e reforço) e duas interfaces (reforço e argamassa (RM) e argamassa (BM)). Portanto, os princípios de concepção de betão armado (RC) pode ser aplicado directamente sobre a alvenaria reforçada clássico com a introdução do elemento pseudo-interface proposta.Palavras-chave: alvenaria armada conjunta; elemento de interface; vinculativo de reforço comportamento da alvenaria; material de pseudo-relação; rigidez dos elementos de interface.

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