Seismic Performance of Lightweight Concrete Structures

Concrete structures are prone to earthquake due to mass of the structures. The primary use of structural lightweight concrete (SLWC) is to reduce the dead load of a concrete structure, which allows the structural designer to reduce the size of the structural members like beam, column, and footings w...

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Main Authors: Swamy Nadh Vandanapu, Muthumani Krishnamurthy
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2018/2105784
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author Swamy Nadh Vandanapu
Muthumani Krishnamurthy
author_facet Swamy Nadh Vandanapu
Muthumani Krishnamurthy
author_sort Swamy Nadh Vandanapu
collection DOAJ
description Concrete structures are prone to earthquake due to mass of the structures. The primary use of structural lightweight concrete (SLWC) is to reduce the dead load of a concrete structure, which allows the structural designer to reduce the size of the structural members like beam, column, and footings which results in reduction of earthquake forces on the structure. This paper attempts to predict the seismic response of a six-storied reinforced concrete frame with the use of lightweight concrete. A well-designed six-storey example is taken for study. The structure is modelled with standard software, and analysis is carried out with normal weight and lightweight concrete. Bending moments and shear forces are considered for both NWC and LWC, and it is observed that bending moments and shear forces are reduced to 15 and 20 percent, respectively, in LWC. The density difference observed was 28% lower when compared NWC to LWC. Assuming that the section and reinforcements are not revised due to use of LWC, one can expect large margin over and above MCE (maximum considered earthquake; IS 1893-2016), which is a desirable seismic resistance feature in important structures.
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spelling doaj-art-c3feb34161a447c8953075c0335d21ae2025-02-03T05:58:20ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/21057842105784Seismic Performance of Lightweight Concrete StructuresSwamy Nadh Vandanapu0Muthumani Krishnamurthy1VIT University, Chennai, IndiaVIT University, Chennai, IndiaConcrete structures are prone to earthquake due to mass of the structures. The primary use of structural lightweight concrete (SLWC) is to reduce the dead load of a concrete structure, which allows the structural designer to reduce the size of the structural members like beam, column, and footings which results in reduction of earthquake forces on the structure. This paper attempts to predict the seismic response of a six-storied reinforced concrete frame with the use of lightweight concrete. A well-designed six-storey example is taken for study. The structure is modelled with standard software, and analysis is carried out with normal weight and lightweight concrete. Bending moments and shear forces are considered for both NWC and LWC, and it is observed that bending moments and shear forces are reduced to 15 and 20 percent, respectively, in LWC. The density difference observed was 28% lower when compared NWC to LWC. Assuming that the section and reinforcements are not revised due to use of LWC, one can expect large margin over and above MCE (maximum considered earthquake; IS 1893-2016), which is a desirable seismic resistance feature in important structures.http://dx.doi.org/10.1155/2018/2105784
spellingShingle Swamy Nadh Vandanapu
Muthumani Krishnamurthy
Seismic Performance of Lightweight Concrete Structures
Advances in Civil Engineering
title Seismic Performance of Lightweight Concrete Structures
title_full Seismic Performance of Lightweight Concrete Structures
title_fullStr Seismic Performance of Lightweight Concrete Structures
title_full_unstemmed Seismic Performance of Lightweight Concrete Structures
title_short Seismic Performance of Lightweight Concrete Structures
title_sort seismic performance of lightweight concrete structures
url http://dx.doi.org/10.1155/2018/2105784
work_keys_str_mv AT swamynadhvandanapu seismicperformanceoflightweightconcretestructures
AT muthumanikrishnamurthy seismicperformanceoflightweightconcretestructures