Seismic performance of deficient masonry infill reinforced-concrete structures

Ali, Muhammad Usman; Khan, Shaukat Ali; Anwar, Muhammad Yousaf; Aleem, Abdul; Raza, Saim; Maqbool, Uzair

doi:10.1680/jstbu.15.00115

Proceedings of the Institution of Civil Engineers - Structures

2017

DOI: 10.1680/jstbu.15.00115

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Seismic performance of deficient masonry infill reinforced-concrete structures

Muhammad Usman Ali¹,

Shaukat Ali Khan²,

Muhammad Yousaf Anwar³

et al.

Abstract: 1 2 3 4 5 6Literature from previous years of research studies reveals that the effect of masonry infills is significant and cannot be neglected. This study is aimed at the seismic vulnerability assessment of masonry infilled reinforced-concrete frame structures in developing countries, taking Pakistan as a case study. Typical two-dimensional reinforced-concrete frames with and without infill panels, and with infill openings are considered. A three-strut model is employed for analytical modelling of infill pane… Show more

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Cited by 3 publications

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“…The authors conclude that this method enables the recycled aggregates to achieve dense matrices in selfcompacting concretes. They also report that because of polydispersal of the mixes, it is possible to minimise the porosity and thus enhance the concrete performance.The fifth paper by Ali et al (2017) reports a study on the seismic vulnerability of masonry infilled reinforced-concrete frame structures in developing countries. Typical twodimensional reinforced-concrete frames with and without infill panels and with infill openings are considered.…”

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Silvestre¹

2017

Proceedings of the Institution of Civil Engineers - Structures

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This issue of Structures and Buildings presents five papers on different scientific topics, ranging from steel structures to reinforced-concrete structures. They shed light on technical problems usually dealt with in current engineering practice.The first paper in this issue, authored by Manis and Bloodworth (2017), assesses the safety of UK transmission tower infrastructure under extreme wind loading. They evaluate the storm magnitudes by applying a change factor methodology to present day wind speeds and using the information provided by the 2009 UK climate change projections. Wind loading on the structure and cables is then determined using Eurocode, and the structure is analysed using pseudo-static finite-element analysis. Fortunately, and despite an estimated increase in wind velocities due to climate change, the typical tower analysed in the study continued to perform satisfactorily at all hazard levels.The second paper by Lawson et al. (2017) addresses the problem of steel-concrete composite beams with low shear connection (interaction) between the beam and slab and presented a design formula to calculate the effective stiffness of composite beams taking account of the stiffness of the shear connectors and their longitudinal spacing. With this formula, the significant additional deflections that occur due to slip in the shear connectors can be accurately calculated. To avoid permanent deformations of the composite beam due to the slip at the serviceability limit state, they propose lower bound limits for the degree of shear connection (30-40%).In the third paper, Johnson et al. (2017) address the analysis and design of tunnel linings of steel fibre reinforced concrete (SFRC). They propose a design method based on principles established by Eurocodes EN 1990 and EN 1992-1-1, EN 14651 and the methodology for SFRC characterisation from the 2010 fib Model Code. Verification methods for both the serviceability limit state and ultimate limit state are discussed and tentative methods of analysis are given, some of which need more test-based evidence. The paper also unveils the areas where stronger evidence from tests and site measurements is needed to enable SFRC tunnel linings to become more economic.The fourth paper in this issue, authored by Sri Rama Chand et al. (2017), presents a study on the behaviour of selfcompacting concrete with recycled aggregates. The compressible packing model, which considers important parameters such as wall effect, loosening effect and perturbed volume, is examined. The authors conclude that this method enables the recycled aggregates to achieve dense matrices in selfcompacting concretes. They also report that because of polydispersal of the mixes, it is possible to minimise the porosity and thus enhance the concrete performance.The fifth paper by Ali et al. (2017) reports a study on the seismic vulnerability of masonry infilled reinforced-concrete frame structures in developing countries. Typical twodimensional reinforced-concrete frames with and without infill panels and with ...

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mentioning

confidence: 99%

“…The fifth paper by Ali et al (2017) reports a study on the seismic vulnerability of masonry infilled reinforced-concrete frame structures in developing countries. Typical twodimensional reinforced-concrete frames with and without infill panels and with infill openings are considered.…”

mentioning

confidence: 99%

Editorial

Silvestre¹

2017

Proceedings of the Institution of Civil Engineers - Structures

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Effect of 3D models on seismic vulnerability assessment of deficient RC frame structures

Mushtaq

Khan

Aḥmad

et al. 2018

Australian Journal of Structural Engineering

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Numerical study on masonry infill wall by using in-plane element and joint interface with RC frame

Sofianto

Imaduddin

Zega

2020

J. Phys.: Conf. Ser.

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Commonly house’s damage under earthquake is because their capacity inadequate to prevent from collapse, and the masonry wall system is not designed to resist the earthquake force. However, masonry infill wall is commonly used as partition and to separate large area with a purposed. Interaction between frame and masonry infill wall are not good connected to prevent building damage from earthquake. To understand the interaction between frames and infill wall can be simulated by numerical method or by Macro-modelling approach. The purpose of this numerical study is modelled a frame as a single element, a masonry infill wall as a plate element, and an interface between frame and masonry infill wall as an elastic spring. The concept of modelling depends on material parametric provided and the number of elements. Modelling with computational software facilitate to create material element and model and this modelling is conducted by Tohoku-coast NS time history seismic. The result shows the frequency parameter expressively increase from frequency on frame model to frame with infill wall model, or the time period parameter significantly reduce with the addition of infill wall. By the addition of mortar thickness which increased the stiffness also affect the frequency parameter and maximum displacement. The thickness of mortar brought the optimal value to good response is recommended with thickness of 0.5 cm to 1.5 cm. The finding is that infill wall gives significant influence on frame response if the interface of frame and infill wall designed with good material characters.

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Seismic performance of deficient masonry infill reinforced-concrete structures

Cited by 3 publications

References 22 publications

Editorial

Editorial

Effect of 3D models on seismic vulnerability assessment of deficient RC frame structures

Numerical study on masonry infill wall by using in-plane element and joint interface with RC frame

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