A Study on effect of Connecting Beams in a Twin Tower Structure
- PDF / 645,199 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 18 Downloads / 199 Views
ARTICLE OF PROFESSIONAL INTERESTS
A Study on effect of Connecting Beams in a Twin Tower Structure Krishnam Raju Penumatcha1 • Ravindra Vipparthy2 • Ambika Yadav3
Received: 23 September 2018 / Accepted: 18 October 2020 The Institution of Engineers (India) 2020
Abstract The objective of this study is to ensure the convincing use and perfect positioning of connecting beams in between twin tower structure subjected to lateral loads. For this, a three dimensional analysis was performed for the twin towers considered without associating connecting beams and in-contrast introducing connecting beams between the two towers at different floor levels. Accordingly, eight alternatives were investigated including the one without connecting beams subjected to wind and earthquake. The wind analysis including P-D effect with a basic wind speed of 50 m/sec and earthquake analysis in Zone II were performed for both static and dynamic conditions. The structure considered for investigation is consisting of four residential units in each floor, with dimensions 20 m 9 40 m 9 54 m. The study reveals that the ‘lateral sway’ at the top of structure against wind is within the permissible limit only in case of all floors joined with connecting beams. Similarly, the ‘storey drift’ is also satisfied as per the code requirements against earthquake. Hence, it is recommended that all the tall structures proposed should be investigated for both wind and earthquake. The isolated towers can be joined with connecting beams as appropriate in order to satisfy the serviceability criteria, i.e. lateral sway and storey drift of the current codes of practice. & Krishnam Raju Penumatcha [email protected] 1
Department of Civil Engineering, Gayatri Vidya Parishad College of Engineering (A), Visakhapatnam 530048, India
2
Department of Civil Engineering, Jawaharlal Nehru Technological University, Kakinada 533003, India
3
Department of Civil Engineering, Gayatri Vidya Parishad College of Engineering (A), Visakhapatnam 530048, India
Keywords Connecting beams Twin tower structure Wind analysis Seismic analysis Lateral sway and storey drift
Introduction The developing countries are slowly switching over to tall building constructions to meet the needs of the urban population. It may be bold to advice that the developed area existing with low rise structures can be replaced with tall structures suitable to the changing needs of the community by providing modern amenities and adopting green technologies. The demand for good ventilation system from all four sides of the building has also given an idea to maintain gap between multi-towers. Since the tall structures are significantly affected by the lateral forces, response due to these forces is a major concern for the structural designer. The primary requirement of the structures is to satisfy the serviceability criteria such as the Lateral Sway and the Storey Drift against wind and earthquake, respectively. For satisfying the serviceability criteria in elevated structures, one of the solutions
Data Loading...
