Assessment of Important Parameters for Seismic Analysis and Design of Confined Masonry Buildings: A Review

Borah, Bonisha; Singhal, Vaibhav; Kaushik, Hemant B.

doi:10.1007/978-981-15-5235-9_20

Cited by 8 publications

(5 citation statements)

References 10 publications

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“…These parameters include material properties, overburden pressure, geometric characteristics, number and spacing of tie-columns, reinforcement detailing of the tie-columns, openings, and number of stories, among others. The range and frequency of occurrence of some important parameters in previous experimental studies were shown in Borah et al [61]. Understanding the parameters that affect the behavior of CM structures can aid in developing effective seismic retrofitting techniques to enhance their performance during earthquakes.…”

Section: Influence Of Some Important Parameters On Behavior Of CM Wallsmentioning

confidence: 91%

“…It predominantly determines the failure mode of a CM wall. Previous experimental investigations have typically focused on single-bay CM wall specimens with an aspect ratio range of approximately 0.6 to 2.75, with the majority of studies examining squat walls or a range of 0.6 to 1.5 [61]. Gavilán et al [43] tested seven solid CM walls with different aspect ratios ranging from slender to squat and observed that all walls failed under shear stress.…”

Section: (Iii) Aspect Ratiomentioning

confidence: 99%

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Analysis and Design of Confined Masonry Structures: Review and Future Research Directions

2023

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This article discusses the significance of confined masonry (CM) structures in terms of their remarkable seismic performance in past earthquake events. However, the variability of CM structures with differing materials, detailing, and construction practices across different regions poses challenges in developing standardized design guidelines. To address the challenges, the state-of-the-art developments in CM are comprehensively reviewed in the present article. This review encompasses experimental campaigns studying CM walls and buildings to evaluate the effect of important parameters on their performance, a discussion of various numerical and analytical models with their respective benefits and limitations, and an examination of design procedures for CM in nine country codes and their local guidelines. This review identifies gaps in the current knowledge, including the need for more studies on the performance of CM structures under earthquake loads and the use of new materials and construction techniques. The article concludes by formulating future research directions to address the identified gaps, including the need for more experimental studies and the development of sophisticated numerical models that can capture the complexities of these structures under the action of different loads. Overall, the article serves as a valuable resource for researchers and practitioners working on the analysis, design, and construction of CM.

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Section: Influence Of Some Important Parameters On Behavior Of CM Wallsmentioning

confidence: 91%

Section: (Iii) Aspect Ratiomentioning

confidence: 99%

Analysis and Design of Confined Masonry Structures: Review and Future Research Directions

2023

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“…In-plane failure in CM walls, which is critical due to its occurrence along the primary lateral load transfer path, often combines various damage modes. Shear-induced in-plane damage is common, presenting as bed joint sliding, diagonal compression, or tension, with shear cracks starting in the wall and extending to the tie-columns [87].…”

Section: Failure Mechanismmentioning

confidence: 99%

Influence of Confining Element Stiffness on the In-Plane Seismic Performance of Confined Masonry Walls

Ajmal,

Qazi,

Ahmed

et al. 2024

Materials

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Confined masonry (CM) construction is being increasingly adopted for its cost-effectiveness and simplicity, particularly in seismic zones. Despite its known benefits, limited research exists on how the stiffness of confining elements influences the in-plane behavior of CM. This study conducted a comprehensive parametric analysis using experimentally validated numerical models of single-wythe, squat CM wall panels under quasi-static reverse cyclic loading. Various cross-sections and reinforcement ratios were examined to assess the impact of the confining element stiffness on the deformation response, the cracking mechanism, and the hysteretic behavior. The key findings included the observation of symmetrical hysteresis in experimental CM panels under cyclic loading, with a peak lateral strength of 114.3 kN and 108.5 kN in push-and-pull load cycles against 1.7% and 1.3% drift indexes, respectively. A finite element (FE) model was developed based on a simplified micro-modeling approach, demonstrating a maximum discrepancy of 2.6% in the peak lateral load strength and 5.4% in the initial stiffness compared to the experimental results. The parametric study revealed significant improvements in the initial stiffness and seismic strength with increased depth and reinforcement in the confining elements. For instance, a 35% increase in the lateral strength was observed when the depth of the confining columns was augmented from 150 mm to 300 mm. Similarly, increasing the steel reinforcement percentage from 0.17% to 0.78% resulted in a 16.5% enhancement in the seismic strength. These findings highlight the critical role of the stiffness of confining elements in enhancing the seismic performance of CM walls. This study provides valuable design insights for optimizing CM construction in seismic-prone areas, particularly regarding the effects of confining element dimensions and reinforcement ratios on the structural resilience.

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“…The main approach for construction CM building is that the rebars for vertical ties should be placed first at the plinth level fixed to the RC plinth beam and the masonry walls are to be constructed between the vertical rebars. Vertical ties are then casted on the formwork confining the walls [3,4]. Then, the horizontal ties are casted together with floor slab (if required) after the completion of masonry wall construction to the desired height(maximum of 3m) [3].…”

Section: O N S T R U C T I O N G U I D E L I N E Smentioning

confidence: 99%

“…contribute load bearing but in the case of RC construction the column and beams are of bigger dimension and are the major load bearing structures [3,4].…”

mentioning

confidence: 99%

A Review On-Confined Masonry Construction

Chingakham¹,

Shijagurumayum²,

Thokchom³

2022

SMSJ

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Masonry structures are popularly built in many parts of India so it is necessary to provide suitable guidelines and safety rules for proper construction of masonry buildings.Confined masonry (CM) structures is appearing as anaccepted building construction technique in many earthquake-prone countries including India. India falls under four earthquake zones namely, zone II, zone III, zone IV and zone V. CMconstruction type has been known to perform well in numerousmajorseismic events, even though it started as an informal construction. This paper is a review of various experimental studies done by various researchers in India and around the world who studied and analyzed on seismic performance of CM buildings. This paper also gives summarized construction guidelines of CM construction and also gives a comparison of CM and reinforced concrete (RC) frame construction. This study shows that CM building construction if standardized in India, under proper guidance of engineers and building codes can prove to be a better alternative to seismic resistant masonry construction.

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Assessment of Important Parameters for Seismic Analysis and Design of Confined Masonry Buildings: A Review

Cited by 8 publications

References 10 publications

Analysis and Design of Confined Masonry Structures: Review and Future Research Directions

Analysis and Design of Confined Masonry Structures: Review and Future Research Directions

Influence of Confining Element Stiffness on the In-Plane Seismic Performance of Confined Masonry Walls

A Review On-Confined Masonry Construction

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