Experimental Study of Shear Failure of Damaged RC Beam Strengthened with GFRP
Antecedents of Variations in Construction Contracts - A Statistical Correlational Study
Dynamic Response of Footbridge Decks
Urban Green Spaces and their Role in Enhancing Quality of Life
Parametric Study on Structural Behaviour of RCC Box Culvert
Study on Strength Properties of Lightweight Expanded Clay Aggregate Concrete
A Step By Step Illustrative Procedure to Perform Isogeometric Analysis and Find the Nodal Displacements for a Two Dimensional Plate Structure
Lateral - Torsional Buckling of Various Steel Trusses
Comparative Study on Methodology of Neo-Deterministic Seismic Hazard Analysis Over DSHA and PSHA
A Step by Step Procedure to Perform Isogeometric Analysis of Beam and Bar Problems in Civil Engineering Including Sizing Optimisation of a Beam
Investigation on the Properties of Non Conventional Bricks
Analysis on Strength and Fly Ash Effect of Roller Compacted Concrete Pavement using M-Sand
Investigation on Pozzolanic Effect of Mineral Admixtures in Roller Compacted Concrete Pavement
Effect of Symmetrical Floor Plan Shapes with Re-Entrant Corners on Seismic Behavior of RC Buildings
Effect of Relative Stiffness of Beam and Column on the Shear Lag Phenomenon in Tubular Buildings
In many structural components such as beams, columns or plates, failure develops not only from excessive stresses but also from buckling. The buckling behavior of plates subjected to in-plane loads is an important aspect in the preliminary design of any structural component. The knowledge of critical buckling loads, mode shapes is vital for reliable structural design. There is a necessity for providing the holes of various shapes in the plates for various purposes. In this paper, the buckling behavior of rectangular plates with holes of various shapes is investigated. The finite element modeling and buckling analysis of the plates has been carried out using ANSYS 14.5. Plates with three varieties of shapes of holes i.e., Triangular, Square and Rhombus have been studied. The plates are investigated for different positions of the holes (i.e. Center, Top) and for various a/b ratios ranging from 2 to 12 at an increment of 2 and for various b/t ratios ranging from 20 to 100 at an increment of 20. Finally, buckling loads of the plates with holes is compared wrt. shape of the hole, location of the hole and some useful conclusions are drawn.
Multistorey RC framed buildings, irregular in plan, often exhibit unfavorable seismic behaviour. In this study, the influence of the earthquake incidence angle on the seismic response of irregular RC framed buildings is examined. Three multistory RC buildings, One regular in plan and Two plan irregular buildings (C-shape, L-shape) are investigated for critical seismic incidence angle. For a good comparison, all the three buildings having the same floor plan area are modeled. The Linear Time History Analysis (LTHA) has been carried out for these three buildings by considering the twelve different earthquake directions and rotating the direction by 15o for each analysis, ranging from 0o to 180o. All these three buildings are modeled using ETABS Software and are subjected to Northridge earthquake accelerogram. It is observed from the study that, the seismic behavior of these three buildings is considerably influenced by the seismic incidence angle. The various parameters observed in this study are axial forces in columns, storey drift, storey shear and maximum storey displacement. The results reveal that the direction of earthquake incidence angle considerably influences the response of multistorey RC buildings
The study is purely based on the tests carried out on jute mortar to observe the various changes and to know about its different properties. A result of 36 specimens (27cubes and 9 beams) with varying chemical modified ratios has been included in the experiment. A total 27 cube samples of 150mm x 150mm x 150mm size and 9 beams of 100mm x 100mm x 500mm were prepared to experiment. The result of specimens has been brought out in which compressive strength and flexural strength for each are evaluated for 7 and 28 days. The results were then compared with the conventional mortar specimens for each chemically modified jute at the respective ages. Results found shows that, the compressive strength increases by 48%, flexural strength increases by 55% and water absorption of chemically modified jute decreases by 50-60%. The investigation shows that, the chemically modified jute reinforced mortar is a very durable material and has higher strength than ordinary mortar and that too at very low cost when compared to new technological innovative materials.
This paper presents the detailed investigation of experimental and numerical studies on the buckling behaviour of coldformed steel rack columns under axial compression. Compression tests were conducted on four short cold formed rack columns with both end hinged condition. The experimental investigation was focused on the strength and behaviour of cold formed steel rack columns. For each specimen, a shell finite element Eigen buckling and non-linear buckling analysis were conducted using finite element software ANSYS. The finite element analysis included relevant geometric imperfections. It is demonstrated that, the finite element model closely predicts the experimental ultimate loads and the behaviour of the cold-formed rack columns. Comparisons of experimental and numerical results are done. Conclusions and scope for future work is presented based on the results.
The concept of Structural Health Monitoring of concrete structures under the seismic load condition has recently made the more attention in the research community of earthquake and structural engineering. Due to destruction of expensive structures, this research makes the attraction of researchers who are doing their research work in the field of damage detection based on the piezoelectric smart sensor. In this review work, the way of post seismic damage detection of structure using the smart aggregate a piezoelectric – based device which have embedded in the reinforced concrete structure and the way to monitor their damage after the effect of an earthquake. During this presented review, a study work has conducted to describe the methodology that has employed to detect the postseismic damage of concrete structure and the methodology of electro-mechanical impedance sensor that has been used for the health monitoring of the structure. The PZT which was embedded in the structure during the construction and the variation in the impedance of the sensor before and after the seismic attacks were extracted as the damage sensitive features are utilized to detect the area of damage. This technique is very important in non –destructive testing and have also tried to attract the attention of the reader. After analyzing the damage of the structure through the attack of an earthquake, the required repair and serviceability can be provided to structure to sustain the structural failure.
