Structural Design of Hybrid System with Structural Steel

Author Name : Roshan Ali, Prof. Mohd. Zeeshan Khan

INTRODUCTION

Composite Steel-Concrete Structures are used widely in modern bridge and building construction. A composite member is formed when a steel component, such as an I-beam, is attached to a concrete component, such as a floor slab or bridge deck. In such a composite T-beam the comparatively high strength of the concrete in compression complements the high strength of the steel in tension. The fact that each material is used to the fullest advantage makes composite Steel-Concrete construction very efficient and economical. One of the biggest revolutions came with introduction of hot-rolled steel section and cold-formed steel decking as a construction material for high-rise buildings. Steel framed structures with the composite floor would bring considerable economies to the overall cost of the project during its lifetime. In recent years significant development has taken place in the structural design of multistoried buildings, mainly based on the principles of composite construction. This will improve the speed of construction and reduce the overall construction cost. The main objective of steel framed composite floor construction is to provide a cost-effective alternative to the any other type of construction such as precast slab panel floor. The use of Steel in construction industry is very low in India compared to many developing countries. Experiences of other countries indicate that this is not due to the lack of economy of Steel as a construction material. There is a great potential for increasing the volume of Steel in construction, especially the current development needs in India. Composite construction essentially different materials are completely compatible and complementary to each other; they have almost the same thermal expansion; they have an ideal combination of strengths with the concrete efficient in compression and the steel in tension; concrete also gives corrosion protection and thermal insulation to the steel at elevated temperatures and additionally can restrain slender steel sections from local or lateral-tensional buckling.

KEY WORDS: Composite Construction, Cost estimation, Time scheduling.