STUDY ON BEHAVIOUR OF DIAGRID STRUCTURE FOR DIFFERENT DIAGRID ANGLES WITH CONSTRUCTION SEQUENCE ANALYSIS
Mr. Nagaraja S N1, Mr. Sunny K2,
1Student, Master of Technology, Department of civil engineering, East West Institute of Technology, Bangalore.
2Assistant Professor, Department of civil engineering, East West Institute of Technology, Bangalore.
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Abstract - It is frame work of diagonally intersecting metal, concrete, or wooden beams i.e. used in the construction of building and roofs and its diagonal components can carry both gravity and lateral loads due to their trigulated design and axial actions. Construction sequence analysis is a non linear analysis approach in which the structures in analyzed at various stages corresponding to the construction sequence and partially required loads are applied sequentially at every stage. A plan of 20 m × 20m size was considered. ETABS 2016 was used in modeling and analysis of structural members and subjected to seismic loads for zone V as per IS1893-2016. In total 6 models with different diagrid angles (520 620 & 680) and column removal scenario at different floor levels. To study bending moment and shear force variation in transfer girder beams for with and without construction sequence and study axial force variation in columns for with and without construction sequence analysis & also study seismic response of diagrid structure with different diagrid angles i.e., storey displacement and storey drift. For response spectrum analysis when compared different diagrid models (62⁰ and 68⁰), diagrid model 68⁰ is less displacement as compared to other degrees implying that we take above 68⁰ diagrid angle is best for tall buildings. A more realistic design than the standard design is produced by including sequential load case in the study of multistory RCC structure.
Key Words: Diagrid angle, construction sequence analysis,
