PSI - Issue 60

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Procedia Structural Integrity 60 (2024) 553–563 Third International Conference on Structural Integrity 2023 (ICONS 2023) Progressive Collapse Analysis of RC building due to Fire load Sarmili Swain a , G. Srinath, Dr. K. Gopikrishna c , Rohith Akkaladevi d ab Research Scholar, Department of Civil Engineering, NIT Warangal, Telangana 506004, India c Associate Professor, Department of Civil Engineering, NIT Warangal, Telangana 506004, India d M.tech Student, Department of Civil Engineering, NIT Warangal, Telangana 506004, India Abstract Fire hazard is perceived to be one of the most destructive hazards faced by mankind in any urban environment as a primary or a secondary consequential event. In recent decades there has been substantial increase in adaptation of RC buildings for residential, commercial & office purposes. Therefore, the building fire appears as a more frequent hazard in comparison with other natural or man-made events. The occurrence of fire is unpredictable and high frequent event, that has potential to create a disaster (resulting in huge loss of property and life). Therefore, there is an imminent need for its consideration during analysis, design of new buildings and in assessment of structural integrity for existing buildings. This aids in providing a safe and functional fire-resistant building during its design life. The recent incidents that have occurred in Hyderabad city (Deccan Mall & Swapnalok complex etc), Telangana state, India, in particular is an epitome of this disaster. However, the existing codes of practice for Indian code designed buildings (BIS) in particular do not address assessment of the building structural behaviour subjected to fire load. Moreover, progressive collapse mechanism of any building can initiate due to loss of critical structural components due to any unforeseen event like explosion, accident, etc. Further, there are more likelihood of triggering of a fire hazard, eventually resulting in cascading failure of a structure. Hence, an attempt has been made to assess the structural integrity of structure during initiation of progressive collapse subjected to fire load. The hypothetical G+3(ground + three floors) reinforced concrete building designed as per IS456:2000, modelled and analysed using the structural finite element software (SAP2000). Progressive collapse analysis of the building is performed as per the GSA guidelines and subjected to simultaneous application of fire load (as per ISO 834 standard fire curve as the input fire load) on all its structural components. Further the performance of the building under fire scenarios were assessed in terms of its resistance duration using the Structural fire software (SAFIR). The outcomes of the study clearly pronounce the structural vulnerability of the building components in resisting the fire exposure for certain duration of time, quantified in terms of response parameters (Bending moments, Shear forces, Demand Capacity Ratio (DCR), etc). 1. Introduction In line with the smart city initiative by the government of India, there has been an increased demand for high rise buildings in urban areas, driven by the goals of industrialization and urbanization. However, it is important to note- ∗ Corresponding author. Tel.8637291464 E-mail address: ss22cer1r05@student.nitw.ac.in 2210-7843 © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the ICONS 2023 Organizers. www.elsevier.com / locate / procedia Third International Conference on Structural Integrity 2023 (ICONS 2023) a , G. Srinath, Dr. K. Gopikrishna c , Rohith Akkaladevi d ab Research Scholar, Department of Civil Engineering, NIT Warangal, Telangana 506004, India c Associate Professor, Department of Civil Engineering, NIT Warangal, Telangana 506004, India d M.tech Student, Department of Civil Engineering, NIT Warangal, Telangana 506004, India Abstract Fire hazard is perceived to be one of the most destructive hazards faced by mankind in any urban environment as a primary or a secondary consequential event. In recent decades there has been substantial increase in adaptation of RC buildings for residential, commercial & office purposes. Therefore, the building fire appears as a more frequent hazard in comparison with other natural or man-made events. The occurrence of fire is unpredictable and high frequent event, that has potential to create a disaster (resulting in huge loss of property and life). Therefore, there is an imminent need for its consideration during analysis, design of new buildings and in assessment of structural integrity for existing buildings. This aids in providing a safe and functional fire-resistant building during its design life. The recent incidents that have occurred in Hyderabad city (Deccan Mall & Swapnalok complex etc), Telangana state, India, in particular is an epitome of this disaster. However, the existing codes of practice for Indian code designed buildings (BIS) in particular do not address assessment of the building structural behaviour subjected to fire load. Moreover, progressive collapse mechanism of any building can initiate due to loss of critical structural components due to any unforeseen event like explosion, accident, etc. Further, there are more likelihood of triggering of a fire hazard, eventually resulting in cascading failure of a structure. Hence, an attempt has been made to assess the structural integrity of structure during initiation of progressive collapse subjected to fire load. The hypothetical G+3(ground + three floors) reinforced concrete building designed as per IS456:2000, modelled and analysed using the structural finite element software (SAP2000). Progressive collapse analysis of the building is performed as per the GSA guidelines and subjected to simultaneous application of fire load (as per ISO 834 standard fire curve as the input fire load) on all its structural components. Further the performance of the building under fire scenarios were assessed in terms of its resistance duration using the Structural fire software (SAFIR). The outcomes of the study clearly pronounce the structural vulnerability of the building components in resisting the fire exposure for certain duration of time, quantified in terms of response parameters (Bending moments, Shear forces, Demand Capacity Ratio (DCR), etc). 1. Introduction In line with the smart city initiative by the government of India, there has been an increased demand for high rise buildings in urban areas, driven by the goals of industrialization and urbanization. However, it is important to note- ∗ Corresponding author. Tel.8637291464 E-mail address: ss22cer1r05@student.nitw.ac.in 2210-7843 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the ICONS 2023 Organizers. c ) 2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the ICONS 2023 Organizers 10.1016/j.prostr.2024.05.075 1. Introduction In line with the smart city initiative by the government of India, there has been an increased demand for high rise buildings in urban areas, driven by the goals of industrialization and urbanization. However, it is important to note- ∗ Corresponding author. Tel.8637291464 E-mail address: ss22cer1r05@student.nitw.ac.in 2210-7843 © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the ICONS 2023 Organizers. Abstract Fire hazard is perceived to be one of the most destructive hazards faced by mankind in any urban environment as a primary or a secondary consequential event. In recent decades there has been substantial increase in adaptation of RC buildings for residential, commercial & office purposes. Therefore, the building fire appears as a more frequent hazard in comparison with other natural or man-made events. The occurrence of fire is unpredictable and high frequent event, that has potential to create a disaster (resulting in huge loss of property and life). Therefore, there is an imminent need for its consideration during analysis, design of new buildings and in assessment of structural integrity for existing buildings. This aids in providing a safe and functional fire-resistant building during its design life. The recent incidents that have occurred in Hyderabad city (Deccan Mall & Swapnalok complex etc), Telangana state, India, in particular is an epitome of this disaster. However, the existing codes of practice for Indian code designed buildings (BIS) in particular do not address assessment of the building structural behaviour subjected to fire load. Moreover, progressive collapse mechanism of any building can initiate due to loss of critical structural components due to any unforeseen event like explosion, accident, etc. Further, there are more likelihood of triggering of a fire hazard, eventually resulting in cascading failure of a structure. Hence, an attempt has been made to assess the structural integrity of structure during initiation of progressive collapse subjected to fire load. The hypothetical G+3(ground + three floors) reinforced concrete building designed as per IS456:2000, modelled and analysed using the structural finite element software (SAP2000). Progressive collapse analysis of the building is performed as per the GSA guidelines and subjected to simultaneous application of fire load (as per ISO 834 standard fire curve as the input fire load) on all its structural components. Further the performance of the building under fire scenarios were assessed in terms of its resistance duration using the Structural fire software (SAFIR). The outcomes of the study clearly pronounce the structural vulnerability of the building components in resisting the fire exposure for certain duration of time, quantified in terms of response parameters (Bending moments, Shear forces, Demand Capacity Ratio (DCR), etc). 1. Introduction In line with the smart city initiative by the government of India, there has been an increased demand for high rise buildings in urban areas, driven by the goals of industrialization and urbanization. However, it is important to note- ∗ Corresponding author. Tel.8637291464 E-mail address: ss22cer1r05@student.nitw.ac.in 2210-7843 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the ICONS 2023 Organizers. Abstract Fire hazard is perceived to be one of the most destructive hazards faced by mankind in any urban environment as a primary or a secondary consequential event. In recent decades there has been substantial increase in adaptation of RC buildings for residential, commercial & office purposes. Therefore, the building fire appears as a more frequent hazard in comparison with other natural or man-made events. The occurrence of fire is unpredictable and high frequent event, that has potential to create a disaster (resulting in huge loss of property and life). Therefore, there is an imminent need for its consideration during analysis, design of new buildings and in assessment of structural integrity for existing buildings. This aids in providing a safe and functional fire-resistant building during its design life. The recent incidents that have occurred in Hyderabad city (Deccan Mall & Swapnalok complex etc), Telangana state, India, in particular is an epitome of this disaster. However, the existing codes of practice for Indian code designed buildings (BIS) in particular do not address assessment of the building structural behaviour subjected to fire load. Moreover, progressive collapse mechanism of any building can initiate due to loss of critical structural components due to any unforeseen event like explosion, accident, etc. Further, there are more likelihood of triggering of a fire hazard, eventually resulting in cascading failure of a structure. Hence, an attempt has been made to assess the structural integrity of structure during initiation of progressive collapse subjected to fire load. The hypothetical G+3(ground + three floors) reinforced concrete building designed as per IS456:2000, modelled and analysed using the structural finite element software (SAP2000). Progressive collapse analysis of the building is performed as per the GSA guidelines and subjected to simultaneous application of fire load (as per ISO 834 standard fire curve as the input fire load) on all its structural components. Further the performance of the building under fire scenarios were assessed in terms of its resistance duration using the Structural fire software (SAFIR). The outcomes of the study clearly pronounce the structural vulnerability of the building components in resisting the fire exposure for certain duration of time, quantified in terms of response parameters (Bending moments, Shear forces, Demand Capacity Ratio (DCR), etc). 1. Introduction In line with the smart city initiative by the government of India, there has been an increased demand for high rise buildings in urban areas, driven by the goals of industrialization and urbanization. However, it is important to note- ∗ Corresponding author. Tel.8637291464 E-mail address: ss22cer1r05@student.nitw.ac.in 2210-7843 © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the ICONS 2023 Organizers. © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the ICONS 2023 Organizers Abstract Fire hazard is perceived to be one of the most destructive hazards faced by mankind in any urban environment as a primary or a secondary consequential event. In recent decades there has been substantial increase in adaptation of RC buildings for residential, commercial & office purposes. Therefore, the building fire appears as a more frequent hazard in comparison with other natural or man-made events. The occurrence of fire is unpredictable and high frequent event, that has potential to create a disaster (resulting in huge loss of property and life). Therefore, there is an imminent need for its consideration during analysis, design of new buildings and in assessment of structural integrity for existing buildings. This aids in providing a safe and functional fire-resistant building during its design life. The recent incidents that have occurred in Hyderabad city (Deccan Mall & Swapnalok complex etc), Telangana state, India, in particular is an epitome of this disaster. However, the existing codes of practice for Indian code designed buildings (BIS) in particular do not address assessment of the building structural behaviour subjected to fire load. Moreover, progressive collapse mechanism of any building can initiate due to loss of critical structural components due to any unforeseen event like explosion, accident, etc. Further, there are more likelihood of triggering of a fire hazard, eventually resulting in cascading failure of a structure. Hence, an attempt has been made to assess the structural integrity of structure during initiation of progressive collapse subjected to fire load. The hypothetical G+3(ground + three floors) reinforced concrete building designed as per IS456:2000, modelled and analysed using the structural finite element software (SAP2000). Progressive collapse analysis of the building is performed as per the GSA guidelines and subjected to simultaneous application of fire load (as per ISO 834 standard fire curve as the input fire load) on all its structural components. Further the performance of the building under fire scenarios were assessed in terms of its resistance duration using the Structural fire software (SAFIR). The outcomes of the study clearly pronounce the structural vulnerability of the building components in resisting the fire exposure for certain duration of time, quantified in terms of response parameters (Bending moments, Shear forces, Demand Capacity Ratio (DCR), etc). Third International Conference on Structural Integrity 2023 (ICONS 2023) Progressive Collapse Analysis of RC building due to Fire load Sarmili Swain a , G. Srinath, Dr. K. Gopikrishna c , Rohith Akkaladevi d ab Research Scholar, Department of Civil Engineering, NIT Warangal, Telangana 506004, India c Associate Professor, Department of Civil Engineering, NIT Warangal, Telangana 506004, India d M.tech Student, Department of Civil Engineering, NIT Warangal, Telangana 506004, India Third International Conference on Structural Integrity 2023 (ICONS 2023) Progressive Collapse Analysis of RC building due to Fire load Sarmili Swain a , G. Srinath, Dr. K. Gopikrishna c , Rohith Akkaladevi d ab Research Scholar, Department of Civil Engineering, c Associate Professor, Department of Civil Engineering, NIT Warangal, Telangana 506004, India d M.tech Student, Department of Civil Engineering, NIT Warangal, Telangana 506004, India Third International Conference on Structural Integrity 2023 (ICONS 2023) Progressive Collapse Analysis of RC building due to Fire load Sarmili Swain a , G. Srinath, Dr. K. Gopikrishna c , Rohith Akkaladevi d ab Research Scholar, Department of Civil Engineering, NIT Warangal, Telangana 506004, India c Associate Professor, Department of Civil Engineering, NIT Warangal, Telangana 506004, India d M.tech Student, Department of Civil Engineering, NIT Warangal, Telangana 506004, India