Seismic performance of RC tall buildings with transfer beam located in seismic zone II
By: Velani, Pulkit Dilip
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Contributor(s): Ramancharla, Pradeep Kumar.
Publisher: Mumbai ACC LTD 2023Edition: Vol.97(7), Jul.Description: 16-30p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian Concrete Journal - ICJSummary: Transfer elements are gaining popularity in tall buildings to support discontinuous vertical elements, such as columns or structural walls, that are required for the upper levels of the building while allowing for unobstructed spaces below. This configuration is essential in urban areas where space is limited and there is a demand for multiple functional uses, such as residential, commercial, and recreational, at lower levels. Such a structural form introduces stiffness and mass irregularity, which is undesirable from a design code perspective. Though such a configuration is widely accepted in other countries, viz., China, USA etc., its applicability to Indian conditions needs to be verified. With this motivation, the seismic performance of eighteen tall reinforced concrete (RC) residential buildings with transfer beams (TBs) located in seismic zone II is studied. Eleven ground motions are used to perform the linear time history analysis (LTHA), and three global parameters, namely base shear, displacement and inter-storey drift ratio (IDR), are used as performance indicators. The study found that the building performance under LTHA was satisfactory even after qualifying for several irregularities. Therefore, the TB feature can be allowed in seismic zone II and for zone III, IV and V; further investigation is needed before it is recommended.
| 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 | 2023-1266 |
Transfer elements are gaining popularity in tall buildings to support discontinuous vertical elements, such as columns or structural walls, that are required for the upper levels of the building while allowing for unobstructed spaces below. This configuration is essential in urban areas where space is limited and there is a demand for multiple functional uses, such as residential, commercial, and recreational, at lower levels. Such a structural form introduces stiffness and mass irregularity, which is undesirable from a design code perspective. Though such a configuration is widely accepted in other countries, viz., China, USA etc., its applicability to Indian conditions needs to be verified. With this motivation, the seismic performance of eighteen tall reinforced concrete (RC) residential buildings with transfer beams (TBs) located in seismic zone II is studied. Eleven ground motions are used to perform the linear time history analysis (LTHA), and three global parameters, namely base shear, displacement and inter-storey drift ratio (IDR), are used as performance indicators. The study found that the building performance under LTHA was satisfactory even after qualifying for several irregularities. Therefore, the TB feature can be allowed in seismic zone II and for zone III, IV and V; further investigation is needed before it is recommended.
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