A study of nonlinear push over Analysis of precast structure with Core wall and shear wall

Rao, Asha Udaya and Aiyappa, T B and Suresh, H L (2016) A study of nonlinear push over Analysis of precast structure with Core wall and shear wall. In: National Conference on Challenges of Civil Engineering Innovations, 04/05/2016, SVCE, BANGALORE.

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Abstract

The vital contrast between the cast in site R.C. frame structures and the prefabricated structure is that the prefabricated structures are consists of different members cast in production facilities away from the construction site. The static and dynamic behavior of the structure mainly depends upon elements and connections. The behavior of prefabricated structures depends on the performance of the various connections between the precast members. The research reported in this paper concerns the non-linear push over analysis of the precast 5 storey frames with fixed and nonlinear moment resisting beam column connections. The Structural frames were made of typical columns where considerable rotations and shear forces influenced at the connections. The step displacement was induced in the frame and where progressive increment to the point where considerable damage was obtained, either at beam column connection or at the base of column. The results are compared with different connections with identical sectional property ordinary moment resisting frame structure. It was proved that pinned connections can accommodate large rotations, more than 0.10 rad, without significant loss of their strength. However, if they are damaged, large joint rotations and the repetition of the ground shaking might increase the damage. Also, it was found that the vertical component of earthquake does not seem to be important. In the study it was observed that the precast structure had undergone large roof displacement with brittle behavior in push over analysis, proving underperformance in lateral stability of precast structure hence incorporating shear wall and core wall improved its performance compared to ordinary moment resisting frames.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Precast, Nonlinear moment resistance connections, Push over, Seismic design, Seismic response, ETABS
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 20 Jul 2016 09:46
Last Modified: 20 Jul 2016 09:46
URI: http://eprints.manipal.edu/id/eprint/146657

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