Please use this identifier to cite or link to this item: http://hdl.handle.net/10266/1605
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dc.contributor.supervisorKwatra, Naveen-
dc.contributor.authorSharma, Madhu-
dc.date.accessioned2011-12-12T07:38:26Z-
dc.date.available2011-12-12T07:38:26Z-
dc.date.issued2011-10-10-
dc.identifier.urihttp://hdl.handle.net/10266/1605-
dc.descriptionM.E. (CED)en
dc.description.abstractNewly designed bridges are often skew. This is due to space constraints in congested urban areas. Skew bridges allow a large variety of solutions in roadway alignments. This contributes to a small environmental impact for new road construction projects. It can also be needed due to geographical constraints such as mountainous terrains. However, the force flow in skew bridges is much more complicated than in right-angle bridges. Analytical calculations alone do not provide sufficient accuracy for structural design. Numerical analysis needs to be performed, in which a skew bridge can be modelled in several ways with different degrees of sophistication. Slab systems are a very special class of structures. They are characterized by their simplicity in geometry and loading. In reinforced concrete construction, the slab is an extensively used structural element. It usually carries uniformly distributed gravity loads acting normal to its surface and transfers same to the supports by flexure, shear and torsion. It is because of this complex behaviour that it is difficult to decide whether the slab is a structural element, component or structural system in itself. The study reveals that the construction of simply supported skew slabs may be recommended only if the short diagonal of the slab is greater than its span otherwise it shows some uplifts at acute corners. The study deals with “Finite Element modelling of the RCC Skew slab” with the help of ATENA. The ATENA is new FEM based software which helps in FEM modeling the RCC structure. The behavior of the simply supported skew slab under point load applied at the centre depends on the ratio of short diagonal to its span. Skew slabs with ratio of short diagonal to span less than unity show lifting of acute corners whereas slabs with ratio of short diagonal to span greater than unity do not. This is because the reactions act at the obtuse corner only when the ratio of short diagonal to its span less than unity and it is well within supports when ratio of short diagonal to span is greater than unity. In this research, FE modeled the skew slab specimens and analyze the results and also compare these results with experimental results. ATENA gave the load deflection curve, the ultimate load and the ultimate deflection, stress strain values, cracking behavior at each steps etc. After getting the ultimate load and the ultimate deflection of the specimens,All the results of the Skew slabs specimens are collected and compare with the experimental results. To model the complex behaviour of reinforced concrete analytically in its non-linear zone is difficult. This has led engineers in the past to rely heavily on empirical formulas which were derived from numerous experiments for the design of reinforced concrete structures. The Finite Element method makes it possible to take into account non-linear response. The FE method is an analytical tool which is able to model RCC structure and is able to calculate the non-linear behaviour of the structural members. For structural design and assessment of reinforced concrete members, the non-linear finite element (FE) analysis has become an important tool. The method can be used to study the behaviour of reinforced and pre-stressed concrete structures including both force and stress redistribution. The Finite Element method allows complex analyses of the nonlinear response of RC structures to be carried out in a routine fashion. FEM helps in the investigation of the behaviour of the structure under different loading conditions, its load deflection behaviour and the cracks pattern. This study deals with the finite element analysis of the monotonic behaviour of reinforced concrete slabs, the non-linear response of RCC Slab using FE Modelling, under the incremental loading with the intention to investigate the relative importance of several factors in the non-linear finite element analysis of RCC Slab. These include the variation in load displacement graph, the crack patterns, propagation of the cracks, the crack width and the effect of the non-linear behaviour of concrete and steel on the response of R.C.C. slab.en
dc.format.extent2623559 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.subjectFinite Elementen
dc.subjectSkew Slaben
dc.subjectCracking of Alasen
dc.titleFinite Element Modelling of Reinforced Cement Concrete Skew Slaben
dc.typeThesisen
Appears in Collections:Masters Theses@CED

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