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Waffle Slab Concrete Bridges: Ultimate Behavior
Journal of the Structural Division, 1982The structural response of reinforced and prestressed concrete waffle slab bridges has been examined under working loads as well as under ultimate collapse loads. Bridges of rectangular and skew planforms are studied. The elastic analysis is based on a Fourier series solution, while the ultimate load analysis is formulated using yield-line theory.
John B. Kennedy, Ibrahim S. El-Sebakhy
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Prestressed Waffle Slab Bridges — Elastic Behavior
Journal of the Structural Division, 1980A series solution has been development to analyze the elastic behavior of post-tensioned waffle slab bridges subjected to laterally applied uniform and concentrated (patch) loads. The solution applies to bridges of rectangular and skew planforms. Realistic estimates of the orthotropic rigidities of waffle construction are used in the solution.
John B. Kennedy, Ibrahim S. El-Sebakhy
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Rigidities of Nonorthogonally Shaped Waffle Slabs
Journal of the Structural Division, 1982Theoretical formulae are presented for the various rigidities of non-orthogonally shaped waffle concrete slabs for both the precracking and postcracking stages. The deduced expressions for the flexural, coupling and torsional rigidites are applicable to both reinforced and prestressed concrete constructions.
John B. Kennedy, K. J. Iyengar
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Rigidities of concrete waffle-type slab structures
Canadian Journal of Civil Engineering, 1979Analytical expressions for the orthotropic rigidities of concrete waffle-type slab structures are presented; the expressions are valid for both the precracking and postcracking stages and are therefore applicable to reinforced and prestressed concrete structures.
John B. Kennedy, S. K. Bali
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Design of horizontally curved waffle slab structures
Engineering Structures, 1997Horizontally curved concrete slab structures are often used in bridge superstructures as well as in large auditoriums with a minimum number of supports. A method is developed to analyse and design such structures based on their ultimate load-carrying capacity. The basis of this method is the yield-line theory.
Alaa Aly, John B. Kennedy
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Behaviour of punching shear in normal RC slab and waffle slab
Asian Journal of Civil Engineering, 2018This study presents the behaviour of punching shear in waffle slabs at slab–column joints subjected to concentric loading. Although it was observed that waffle slabs are very similar to that of flat slabs, the shear capacity is relatively reduced because some of the potential surfaces are lost when it extends into waffle section. The current IS code of
C. Arunkumar +3 more
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Waffle, Ribbed and Composite Joists Slabs: A Review Study
Construction Technologies and Architecture, 2023Due to the importance of the joists slab system as an excellent solution for increasing span demands in different building types, investigating its properties becomes essential for different researchers. The effects of numerous parameters on the structural behaviour of the joists slab system, whether it was a waffle, ripped, or composite sections were ...
Abdullah Sikar Al-Issawi +2 more
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Waffle Slabs Supported on Rows of Columns
Journal of Structural Mechanics, 1981ABSTRACT By incorporating recent theoretical developments covering plates with eccentric stiffeners, an approximate analysis of reinforced concrete waffle slabs supported on rows of columns is presented. The corner slab panel is treated as a rectangular orthotropic slab supported at its four corners, and its solution can be put in a simple closed form.
Pisidhi Karasudhi +2 more
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Two-Way (Waffle) Flat Slab Design
1998A “waffle” flat slab is a two-way joist system. Under the general provisions of the 1995 Code, Chapter 13, the two-way joist portion may be combined with a solid column head or with solid wide beam sections on the column centerlines for uniform depth construction.
Edward S. Hoffman +2 more
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Flat Slab and Waffle Slab Systems
1994The effects of column grid size, number of storeys, use of mild/high yield steel reinforcement, location of structural element, grade of concrete and provision of column heads in structural systems on the quantities of various constituents of reinforced concrete construction using flat slabs and waffle slabs have been studied and presented in the form ...
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