Investigation of earthquake behavior of unreinforced masonry buildings having different opening sizes: Experimental studies and numerical simulation

Kayirga, Oktay Musa; Altun, Fatih

doi:10.1016/j.jobe.2021.102666

Cited by 10 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the energy dissipated by the interband-4 is least in this case. With the damage, the structural capacity decreases, but the structure continues to dissipate energy (damping) with the opening and closing phenomena of the crack (Kayirga & Altun, 2021) and with frictional energy loss due to the sliding mechanism at the interface.…”

Section: Hysteresis Behavior and Energy Dissipationmentioning

confidence: 99%

Shake table tests on 1:2 reduced scale masonry house with the application of horizontal seismic bands

Yadav

Sieffert

Vieux-Champagne

et al. 2023

Engineering Structures

View full text Add to dashboard Cite

Section: Hysteresis Behavior and Energy Dissipationmentioning

confidence: 99%

Shake table tests on 1:2 reduced scale masonry house with the application of horizontal seismic bands

Yadav

Sieffert

Vieux-Champagne

et al. 2023

Engineering Structures

View full text Add to dashboard Cite

“…The purpose of this two-story building is to accommodate and incubate startup companies of various sizes. The reasons for the cracks on the building surface [26] are irregular stress from a long-term overload [27], deformation and corrosion by the weather conditions [28], decrease in bearing capacity [29] and damage from earthquakes [30]. The dimensions of cracks numbered in Input Image 1 of Figure 10 was as follows: (1, 4, and 5) circular shape with radius of 3 to 5 mm; (2) 20 cm long and 1 cm wide; and (3) triangular shape with a base of 2 cm and a height of 2 cm.…”

Section: Contour Detector For Crack Detectionmentioning

confidence: 99%

“…11 cm and 4 mm, (2) 9 cm and 8 mm, (3) 15 cm and 10 mm, (4) 3 cm and 6 mm, (5) 12 cm and 3 mm, and (6) 7 cm and 3 mm. are irregular stress from a long-term overload [27], deformation and corrosion by the weather conditions [28], decrease in bearing capacity [29] and damage from earthquakes [30]. The dimensions of cracks numbered in Input Image 1 of Figure 10 In the case of the Sobel detector, the detection results were not reliable when the texture of the wall was not smooth (see Figure 11).…”

Section: Contour Detector For Crack Detectionmentioning

confidence: 99%

Drone-Assisted Image Processing Scheme using Frame-Based Location Identification for Crack and Energy Loss Detection in Building Envelopes

Ham

Lee

2021

Energies

View full text Add to dashboard Cite

This paper presents improved methods to detect cracks and thermal leakage in building envelopes using unmanned aerial vehicles (UAV) (i.e., drones) with video camcorders and/or infrared cameras. Three widely used contour detectors of Sobel, Laplacian, and Canny algorithms were compared to find a better solution with low computational overhead. Furthermore, a scheme using frame-based location identification was developed to effectively utilize the existing approach by finding the current location of the drone-assisted image frame. The results showed a simplified drone-assisted scheme along with automation, higher accuracy, and better speed while using lower battery energy. Furthermore, this paper found that the cost-effective drone with the attached equipment generated accurate results without using an expensive drone. The new scheme of this paper will contribute to automated anomaly detection, energy auditing, and commissioning for sustainably built environments.

show abstract

“…One of the most common modifications suffered by historical masonry buildings concerns the change in the arrangement of the openings in the load-bearing or bracing walls, often due to separations or mergers of different apartments in the same building or even to extensive renovations of private properties up to the addition of one or more floors. These types of building works, that fall within the complex urban phenomena of the last century, often caused structural irregularities involving the seismic response of the building (Parisi and Augenti 2013, Cattari et al 2022, Shariq 2008, Kayırga and Altun 2021.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of vertical irregularity effects of historical masonry buildings through a simplified procedure: the case of Florence city center

Alecci,

De Stefano,

Galassi

et al. 2024

Bull Earthquake Eng

View full text Add to dashboard Cite

Masonry buildings constitute a large part of the European building heritage. This building stock often presents plan or vertical irregularity generally caused by the architectural and structural modifications undergone over the time. In the context of historical city centres, the most recurring irregularity is the vertical one, due to sudden variations in mass, stiffness (and strength) of walls along the building height. In particular, in the case of Florence city centre (Italy), vertical irregularity is caused by the removing of large portions of masonry walls at the ground floor as a consequence of the changed use of these parts of the building; the functional modification of the openings scheme at the different levels of the building due to the internal renovation of the flats; the rooftop addition.In this paper vertical irregularity in historical masonry buildings is investigated through the analysis of single masonry walls. A simplified numerical procedure is adopted in order to evaluate the influence of vertical irregularity on the seismic response of masonry walls along the building height.The masonry structure is modelled through an assemblage of rigid and infinitely strong blocks, linked in-between and to the soil by means of deformable joints. Numerical results demonstrated that this simplified procedure is able to predict the behavior of masonry walls both before and after the typical structural modifications which involved, particularly, the historical buildings of Florence city center. This simplified procedure is suggested as a useful tool for both research purposes and professional practice.

show abstract

Investigation of earthquake behavior of unreinforced masonry buildings having different opening sizes: Experimental studies and numerical simulation

Cited by 10 publications

References 24 publications

Shake table tests on 1:2 reduced scale masonry house with the application of horizontal seismic bands

Shake table tests on 1:2 reduced scale masonry house with the application of horizontal seismic bands

Drone-Assisted Image Processing Scheme using Frame-Based Location Identification for Crack and Energy Loss Detection in Building Envelopes

Evaluation of vertical irregularity effects of historical masonry buildings through a simplified procedure: the case of Florence city center

Contact Info

Product

Resources

About