International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 06 | Jun 2022
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e-ISSN: 2395-0056 p-ISSN: 2395-0072
A Review on Seismic and Progressive Collapse Evaluation of Reinforced Concrete Structure In-Filled with Masonry Infill Wall Harshada R. Patil1, Dr. Atul B. Pujari2 1Post
Graduate Student, Department of Civil Engineering, KJ College of Engineering & Management Research, Pune-411048, India 2Associate Professor, Department of Civil Engineering, KJ College of Engineering & Management Research, Pune-411048, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Buildings are subjected to a variety of natural
hazards over their mean lives and around the globe structural multi-hazard analysis and design has become a hotbed of research. Earthquake and progressive collapse seem to be two of the major threats for these constructions. Consequently, limited research on the effects of seismic and progressive collapse designs on multi-story buildings has been done. A building's construction also contains a variety of structural and non-structural parts for various functions. When examining structural members, we as structural engineers, tend to focus on the structural members for resistance of buildings against any hazard and Non-structural components are often overlooked. However, several studies have shown that non-structural parts, such as infill walls, play a key role in increasing building resistance to natural disasters. As a result, the role of the infill wall against various risks must be investigated. The effect of infill walls in the case of progressive and seismic collapse of RC structures has received far less attention. In this study, it is decided to evaluate effect of different infill wall configuration in case of combine study of seismic and progressive collapse of reinforced concrete structures by using ETABS software. For this purpose four models 1) Bare Frame 2) Fully In-filled Frame 3) Open Ground Frame and 4) Open Ground & Intermediate Frame have been considered. Key Words: Progressive Collapse, Seismic load, Infilled wall.
1. INTRODUCTION Eruptions often suddenly damage the structures. Primary members of building like columns and walls get damaged by intensive blasts and impacts. This results in loss of nonstructural members, damage to some portion of structural members and collapse of structural components which leads progressive collapse in part or whole. As a consequence of failure of member in primary load resisting system, the loads are redistributed and if the redistributed loads exceed the capacity of the member, failure occurs. Building undergoes progressive collapse as this process continues throughout the structure. An isolated local failure may lead a significant deformation which then might result in collapse of structure. Present progressive collapse analysis and design methods © 2022, IRJET
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Impact Factor value: 7.529
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are primarily concerned with preventing progressive collapse caused by abnormal gravity and blast loads. However, we haven't focused on issues related to the earthquake's progressive disintegration. The progressive collapse characteristic of structures produced by earthquake loading must be considered. It's crucial to think about how earthquake loading causes structures to progressively collapse. There are often irregular layouts in infill walls in structures, and the walls have a certain stiffness that will cause the infill walls to contribute the shear forces. As a result, the main frame of a masonry in-filled frame structure may be subjected to too great a shear force, which results in a safety hazard. A number of earthquake damage studies have shown that the damage to RC frame structures with infill walls differed from the damage to empty frames due to the interaction between the infill walls and frames. Several unforeseeable failure modes were present. Although masonry is not an engineered or structural element, it is known that it provides excellent resistance to earthquake than relatively flexible RC building could provide.
1.1 Progressive Collapse: A progressive collapse of a structure is the development of an initial local failure which, if left unchecked, would ultimately result in the collapse of the entire structure. Increasingly, multi story collapse has become one of the key causes of structural failure. Blast, fire, seismic waves, aircraft hit and construction error are all examples of abnormal loading circumstances. Types of progressive collapse:
Zipper Type
Pancake Type
Instability Type
Domino Type
Section Type
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