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Modelling of Flexural Response of Simply Supported RC Skew Slab


Affiliations
1 Department of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala 147 001, India
2 Department of Civil Engineering, Guru Nanak Dev Engineering College, Ludhiana 141 006, India
 

Skew slabs have various applications, e.g. as floor of bridges and buildings. This is pertinent when it is not possible to cross a river or gap at an angle of 90°. Design aids and plans suggested by various codes are applicable for standard skew angles, i.e. 15°, 30°, 45°, etc. with selective spans only. However, in actual practices, several cases are encountered, wherein skew angle and aspect ratio of the slab panel do not fit the recommended guidelines. This occurs due to the very high land cost and space limitations. The present study proposes an analytical model for the design of skew slabs with any skew angle and aspect ratio. The developed model indicates that skew slabs simply supported along two opposite parallel sides and free along the other two sides are suitable for the construction of bridges having short diagonal larger than the span. The developed model validates the assumptions considered in terms of collapse loads and crack patterns experimentally and numerically. This shall facilitate engineers during the design of skew slab bridge for any skew angle and aspect ratio, without deviating from the alignment of the road.

Keywords

Finite-Element Analysis, Flexural Response, Skew Slabs, Yield-Line Method.
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Abstract Views: 444

PDF Views: 125




  • Modelling of Flexural Response of Simply Supported RC Skew Slab

Abstract Views: 444  |  PDF Views: 125

Authors

Madhu Sharma
Department of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala 147 001, India
Naveen Kwatra
Department of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala 147 001, India
Harvinder Singh
Department of Civil Engineering, Guru Nanak Dev Engineering College, Ludhiana 141 006, India

Abstract


Skew slabs have various applications, e.g. as floor of bridges and buildings. This is pertinent when it is not possible to cross a river or gap at an angle of 90°. Design aids and plans suggested by various codes are applicable for standard skew angles, i.e. 15°, 30°, 45°, etc. with selective spans only. However, in actual practices, several cases are encountered, wherein skew angle and aspect ratio of the slab panel do not fit the recommended guidelines. This occurs due to the very high land cost and space limitations. The present study proposes an analytical model for the design of skew slabs with any skew angle and aspect ratio. The developed model indicates that skew slabs simply supported along two opposite parallel sides and free along the other two sides are suitable for the construction of bridges having short diagonal larger than the span. The developed model validates the assumptions considered in terms of collapse loads and crack patterns experimentally and numerically. This shall facilitate engineers during the design of skew slab bridge for any skew angle and aspect ratio, without deviating from the alignment of the road.

Keywords


Finite-Element Analysis, Flexural Response, Skew Slabs, Yield-Line Method.

References





DOI: https://doi.org/10.18520/cs%2Fv118%2Fi12%2F1911-1921