Investigation of torsion in confined masonry structures originating due to unsymmetric openings

Mughal, Ubaid Ahmad; Qazi, Asad Ullah; Ahmed, Ali; Ajmal, Muhammad Mubashir; Danish, Muhammad

doi:10.1080/19648189.2023.2293817

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…The cement sand mortar and non-shrinkage grout were modeled using a pair of nonlinear spring elements (COMBIN39) and contact elements (CONTA178) arranged sequentially with the spring elements, as illustrated in Figure 5 [35][36][37]. This modeling considers both the material properties and the interaction between the mortar and adjoining pipe structures.…”

Section: Elements Used For Modelingmentioning

confidence: 99%

Joint Behavior of Full-Scale Precast Concrete Pipe Infrastructure: Experimental and Numerical Analysis

Basit,

Abbas,

Ajmal

et al. 2024

Infrastructures

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This study undertakes a comprehensive experimental and numerical analysis of the structural integrity of buried RC sewerage pipes, focusing on the performance of two distinct jointing materials: cement mortar and non-shrinkage grout. Through joint shear tests on full-scale sewer pipes under single point loading conditions, notable effects on the crown and invert of the joint were observed, highlighting the critical vulnerability of these structures to internal and external pressures. Two materials—cement–sand mortar and non-shrinkage grout—were used in RC pipe joints to experimentally evaluate the joint strength of the sewerage pipes. Among the materials tested, cement–sand mortar emerged as the superior choice, demonstrating the ability to sustain higher loads up to 25.60 kN, proving its cost-effectiveness and versatility for use in various locations within RC pipe joints. Conversely, non-shrinkage grout exhibited the lowest ultimate failure load, i.e., 21.50 kN, emphasizing the importance of material selection in enhancing the resilience and durability of urban infrastructure. A 3D finite element (FE) analysis was also employed to assess the effect of various factors on stress distribution and joint deformation. The findings revealed a 10% divergence between the experimental and numerical data regarding the ultimate load capacity of pipe joints, with experimental tests indicating a 25.60 kN ultimate load and numerical simulations showing a 23.27 kN ultimate load. Despite this discrepancy, the close concordance between the two sets of data underscores the utility of numerical simulations in predicting the behavior of pipe joints accurately. This study provides valuable insights into the selection and application of jointing materials in sewerage systems, aiming to improve the structural integrity and longevity of such critical infrastructure.

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Section: Elements Used For Modelingmentioning

confidence: 99%

Joint Behavior of Full-Scale Precast Concrete Pipe Infrastructure: Experimental and Numerical Analysis

Basit,

Abbas,

Ajmal

et al. 2024

Infrastructures

Self Cite

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Structural response of half-scale pumice concrete masonry building: shake table/ambient vibration tests and FE analysis

Kaya,

Roudane,

Adanur

et al. 2024

Meccanica

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Seismic performance evaluation of masonry structures is of paramount importance for ensuring the safety and resilience of buildings in earthquake-prone regions. There are limited number of studies on pumice elements in the literature. In addition, there are almost no studies investigating the earthquake behavior of pumice masonry building as a whole structure. In this context, a comprehensive understanding of their seismic response and dynamic characteristics has been lacking. To address this knowledge gap, a shake-table experimental campaign was undertaken, wherein half-scale pumice masonry building was exposed to simulated seismic forces. To enhance the experimental findings, numerical simulations were performed to confirm and expand our comprehension of how the pumice masonry structure responds to dynamic forces. Integrating both experimental and numerical outcomes provides a holistic understanding of how pumice masonry buildings behave during seismic events. At the end of the experimental study, the frequency values of the pumice model were observed to decrease up to 23.5% in the modes compared to the undamaged state. In the numerical model, this value decreases up to 19.85%. For the undamaged and damaged model, the first three experimental mode shapes were similar to the numerical mode shapes. Both experimental and numerical results show that the expected damages occur in the same regions. These results show that nonlinear FE models can be helpful in determining potential damage model locations. The findings have implications for the seismic design and retrofitting of similar traditional masonry buildings, facilitating the development of resilient and sustainable engineering solutions in seismic-prone regions.

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Comparative analysis of mechanical characteristics in masonry walls: impact of aspect ratios and opening percentages

Mughal,

Qazi,

Ahmed

et al. 2024

European Journal of Environmental and Civil Engineering

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Investigation of torsion in confined masonry structures originating due to unsymmetric openings

Cited by 3 publications

References 28 publications

Joint Behavior of Full-Scale Precast Concrete Pipe Infrastructure: Experimental and Numerical Analysis

Joint Behavior of Full-Scale Precast Concrete Pipe Infrastructure: Experimental and Numerical Analysis

Structural response of half-scale pumice concrete masonry building: shake table/ambient vibration tests and FE analysis

Comparative analysis of mechanical characteristics in masonry walls: impact of aspect ratios and opening percentages

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