Keynote Address by Er. Inki Choi
Er. Inki Choi, Head, Design (Bridges), Heavy Civil IC, L&T Construction is a structural engineer from South Korea and has 23 years’ experience in bridge design. He has international experience in bridge design and delivery of projects in South Korea, Middle East, UK, Australia and India. His key experience areas are in design of iconic bridges such as cable-stayed bridge, arch and suspension bridges. The major projects in India include Trans Harbour Link Project (Mumbai) and Durgam Cheruvu Iconic Bridge (Hyderabad).
Er. Inki Choi presented an overview of the iconic bridges in India using precast prestressed segments and design challenges associated with the construction of such bridges. He briefly explained about the advantages of casting structural components in controlled environment which include quality control, speed, safety and environmental friendliness. The basic principles behind prestressed and post tensioned concrete bridges was also highlighted. He broadly discussed about the technical aspects and key challenges faced during construction of extradosed bridges like 2nd Vivekananda Setu (Kolkata), 3rd Narmada Bridge (Gujarat), Barapullah Elevated Road Project (New Delhi), 2nd Iswar Gupta Setu (West Bengal), New Ganga Bridge (Patna), Durgam Cheruvu Bridge (Hyderabad ) and cable stayed bridge – Mandovi Bridge (Goa). He detailed about the structural aspects like foundation, deck cross-sections adopted and various stages of construction.
He briefed about various loads acting on bridge and analysis techniques. According to him the main design challenges associated with construction were geometry control and camber control. He concluded with the note on how to overcome the closure errors which could be horizontal, vertical or both.