EFFECT OF VERTICAL IRREGULARITY ON PERFORMANCE OF REINFORCED CONCRETE FRAMED BUILDINGS
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING
Author(s): RAHUL LESLIE , SARASWATHY B
Abstract: Indian standard codes (IS 456:2000, IS 13920: 1993) have not given particular attention for the design of setback buildings. This paper addresses the effect of irregularities in elevation on the seismic performance of reinforced concrete (RC) framed buildings with infill brick walls. The seismic parameters such as fundamental time period, inter storey drift ratio, base shear and top displacement of irregular buildings are compared with that of a regular building. The nonlinear static analysis, using user defined hinges, is used to assess the buildings with irregularities introduced at different storey levels and with different setback ratios. Nonlinear version of SAP 2000-12 is used for analysis. It is observed that the performances of these irregular buildings when designed according to the provisions of IS codes are inferior compared to that of regular building.
- Publication Date: 26-Oct-2014
- DOI: 10.15224/978-1-63248-030-9-11
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FREE VIBRATION ANALYSIS OF ELASTIC CYLINDRICAL HELIX VIA A MIXED FINITE ELEMENT METHOD
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING, ELECTRONICS AND COMMUNICATION
Author(s): AKIF KUTLU , NIHAL ERATLI
Abstract: Referring to the previous theoretical and numerical studies on the static/dynamic analyses of elastic helicoidal bars, only circular or square cross-sections were considered up today. The main purpose of this study is to investigate the dynamic behavior of the elastic cylindrical helices having hollow circle and elliptical hollow sections. For this purpose, a mixed finite element formulation with the Timoshenko beam assumptions is employed. Frenet triad is adopted as the local coordinate system in the helix geometry. Isoparametric curved elements involve two nodes, where each node has 12 DOF, namely three translations, three rotations, two shear forces, one axial force, two bending moment and one torque. Numerical solutions are performed to analyze the free vibration behavior of the cylindrical helices and benchmark results are presented. Parametric studies are carried out to investigate the influence of the parameters e.g. section geometry, boundary conditions, density of the material
- Publication Date: 26-Oct-2014
- DOI: 10.15224/978-1-63248-030-9-12
- Views: 0
- Downloads: 0