Estimation of in-plane shear capacity of confined masonry walls with and without openings using strut-and-tie analysis

Tripathy, Dattatreya; Singhal, Vaibhav

doi:10.1016/j.engstruct.2019.03.002

Cited by 47 publications

(24 citation statements)

References 24 publications

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“…More recently, Tripathy and Singhal (2019) [6] performed a parametric analysis based on a large set of finite element models, intended to realize the behaviour of the masonry strut and to develop a formulation for the strut-and-tie model in CM walls. The work presented here is also based on a parametric numerical study, but it intends to go further in discussing the parameters for a lateral forcedisplacement backbone model.…”

Section: Background Studiesmentioning

confidence: 99%

Lateral in-plane seismic response of confined masonry walls: From numerical to backbone models

Marques

Pereira

2020

Engineering Structures

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Confined masonry (CM) is a widely used solution for buildings in developing countries and has potential for worldwide application when considering its economic and constructive advantages.Although a large background of experimental testing of CM walls is available, numerical studies are further needed to extend the existing knowledge and derive analytical rules to adopt in design codes. In this work, a parametric numerical study is performed, aimed to characterize the lateral in-plane response of CM walls under different variables and to establish a dataset for comparison of engineering demand parameters, towards the proposal of predictive models. Benchmark walls tested under lateral in-plane loading are used to calibrate a finite element modelling approach for pushover analysis. Based on the results of the parametric study, a formulation and charts are proposed to respectively estimate the lateral resistance and displacement capacity of CM walls with features similar to the ones used as benchmark.

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Section: Background Studiesmentioning

confidence: 99%

Lateral in-plane seismic response of confined masonry walls: From numerical to backbone models

Marques

Pereira

2020

Engineering Structures

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“…45,46 Nevertheless, several countries experienced that confined masonry (CM), which is characterized by bearing masonry panels framed by small reinforced concrete horizontal and vertical elements (tie-beams and tie-columns), has improved seismic performance with higher lateral resistance and overall ductility. [47][48][49][50][51][52][53] CM structures have shown a very satisfactory behavior during moderate and strong earthquakes, 54,55 representing a sound alternative to bare and masonry-infilled reinforced concrete (RC) frame buildings. 56 Recently, the last of these authors started a research program aimed to assess and improve the dynamic performance of masonry structures by using the CM technique.…”

Section: Introductionmentioning

confidence: 99%

“…It is well known that unreinforced masonry (URM) does not perform well with horizontal loading, such as earthquakes, mainly because of the low tensile strength of bricks and mortar, which causes brittle failure 45,46 . Nevertheless, several countries experienced that confined masonry (CM), which is characterized by bearing masonry panels framed by small reinforced concrete horizontal and vertical elements (tie‐beams and tie‐columns), has improved seismic performance with higher lateral resistance and overall ductility 47–53 . CM structures have shown a very satisfactory behavior during moderate and strong earthquakes, 54,55 representing a sound alternative to bare and masonry‐infilled reinforced concrete (RC) frame buildings 56 .…”

Section: Introductionmentioning

confidence: 99%

Damage detection via modal analysis of masonry structures using shaking table tests

Pepi

Cavalagli

Gusella

et al. 2021

Earthq Engng Struct Dyn

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In the last two decades, the use of modal parameters to detect and localize structural damage has gained increasing interest in the scientific community. The work reported in the literature mainly deals with the change of natural frequencies due to changes in structural properties given by damage. This approach relies on the accurate modal parameters estimation, which is still a very difficult task especially when complex structural systems are of interest. Furthermore, damage detection and localization can be highly inaccurate if natural frequencies are used only, regardless of the associated mode shapes. This paper investigates the effectiveness of vibration-based methods for dynamic identification and damage detection on masonry structures using experimental tests and operational modal analysis. In particular, ambient vibration tests are first used to obtain modal parameters of two different building models made up of unreinforced and confined masonry, respectively. A shaking table is then used to give a sequence of increasing seismic loads to each of the two masonry models. Damage-induced variations of the modal parameters, i.e., natural frequencies and associated mode shapes, are estimated after each seismic level using the structural vibrations caused by a low-level white noise base excitation. The obtained results give useful information on the effectiveness of vibration-based methods to detect and localize different damage patterns on masonry structures using changes in the modal parameters. Furthermore, it was possible to assess the different seismic performance of the confined masonry structural system compared to the unreinforced masonry.

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“…Strut & Tie (S-T) models are commonly used for the analysis of confined walls subject to seismic results [1][2][3][4][5][6]. Such models can be, however, used to analyse monotonically loaded walls [7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of confined masonry with Strut and Tie models

Drobiec

Mazur

Rybarczyk³

2020

MATEC Web Conf.

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Strut & Tie (S-T) models are used quite commonly for the analysis of reinforced concrete structures and in the calculation of masonry structures. Creating the S-T model of the confined masonry is slightly different from models of reinforced concrete or models of classic masonry structures. These models should take into account different stiffness of concrete and masonry. This article proposes a Strut & Tie model for the analysis of confined masonry. The results of calculations were compared with the results of tests of full scale masonry walls with and without opening. Good compliance of the calculation results of S-T models with the test results was obtained.

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Estimation of in-plane shear capacity of confined masonry walls with and without openings using strut-and-tie analysis

Cited by 47 publications

References 24 publications

Lateral in-plane seismic response of confined masonry walls: From numerical to backbone models

Lateral in-plane seismic response of confined masonry walls: From numerical to backbone models

Damage detection via modal analysis of masonry structures using shaking table tests

Analysis of confined masonry with Strut and Tie models

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