CONSTRUCTION SEQUENCE ANALYSIS OF RCC FRAMED STRUCTURES USING E-tabs

While analyzing Tall structure in Conventional method the gravity loads are applied after modeling the whole structure. In actual practice the complete frames are constructed at various stages and the stability of frames varies accordingly. The applied load assumed in Conventional method will be unsuitable as per the actual construction practice. The frame should be analyzed at every construction stage considering the effect of variation of loads at each stage. This methodology is known as construction sequential analysis. The present work aims for the comparative study of a G+20 structure in seismic zone II as per IS 1893:2002 (Part 1) and its behavioral responses (Moment, Force analysis, Response spectrum) with the conventional DL+LL+EQ loading. A multi-purpose G+20 complex is analyzed using AUTO-SEQ or construction sequential analysis with insertions of floating columns at different position of column and floors with same floor plans which is modeled in E-tabs and analyze their responses. It is observed that moment, shear force of transfer girder is more in constructional sequence analysis case compared to normal case.