Assessment of Seismic Response Reduction Factor of RC Staging Elevated Water Tanks of Different Staging Height
By: Jignesh A
.
Contributor(s): Patel, Kashyap N.
Publisher: New Delhi ACC LTD 2019Edition: Vol.93(11), Nov.Description: 37-48P.Subject(s): Construction Engineering and Management (CEM)Online resources: Click here
In:
Indian Concrete JournalSummary: Seismic design code for water retaining tanks IS 1893 (Part-II) 2014 indirectly consider the nonlinear behaviour of structures using ‘response reduction factor’ (R). The ‘R’ factor permits the use of linear elastic force based design for RC structures taking in to account the nonlinear behaviour and deformation limits. This study focus on the assessment of the realistic values of response reduction factor for RC frame staging elevated water tanks designed and detailed using the relevant Indian codes/standards. Twelve elevated RC frame staging water tanks of capacities 250 m3, 500 m3, 1000 m3, 1500 m3 and each having a staging height of 16 m, 24 m and 32 m are considered for analysis. RC staging elevated water tanks are analyzed using displacement controlled nonlinear static pushover analysis to obtain the capacity/pushover curve. The ‘R’ factor of elevated water tanks are evaluated at two performance limit viz. member level and structural level. The results of this study show that ductility factor and ‘R’ factor is considerably affected by the staging height and capacity of tanks. The evaluated values of ‘R’ factor corresponding to member level performance limit for the considered water tanks are either close to or higher than those specified in IS 1893 (Part-II) 2014 for special moment resistance RC frame staging water tanks.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
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Articles Abstract Database
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2020529 |
Seismic design code for water retaining tanks IS 1893 (Part-II) 2014 indirectly consider the nonlinear behaviour of structures using ‘response reduction factor’ (R). The ‘R’ factor permits the use of linear elastic force based design for RC structures taking in to account the nonlinear behaviour and deformation limits. This study focus on the assessment of the realistic values of response reduction factor for RC frame staging elevated water tanks designed and detailed using the relevant Indian codes/standards. Twelve elevated RC frame staging water tanks of capacities 250 m3, 500 m3, 1000 m3, 1500 m3 and each having a staging height of 16 m, 24 m and 32 m are considered for analysis. RC staging elevated water tanks are analyzed using displacement controlled nonlinear static pushover analysis to obtain the capacity/pushover curve. The ‘R’ factor of elevated water tanks are evaluated at two performance limit viz. member level and structural level. The results of this study show that ductility factor and ‘R’ factor is considerably affected by the staging height and capacity of tanks. The evaluated values of ‘R’ factor corresponding to member level performance limit for the considered water tanks are either close to or higher than those specified in IS 1893 (Part-II) 2014 for special moment resistance RC frame staging water tanks.
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