Difference between reinforced concrete structure and steel frame structure

The steel frame structure is mainly made of steel and is one of the main types of building structures. It has the following characteristics: lighter weight, higher reliability of work, good vibration (shock) resistance, impact resistance, high degree of industrialization, easy to make a sealed structure, easy corrosion, poor fire resistance and other characteristics.
Reinforced concrete structure is a kind of structure constructed with steel bars and concrete. The steel bars are under tension and the concrete is under pressure. It has the advantages of sturdiness, durability, good fire resistance, saving steel and lower cost than steel structure.

Due to the good plasticity and toughness of the steel, it can have large deformation and can withstand dynamic loads well. Secondly, the steel has good homogeneity and isotropy. It is an ideal elastic body and best meets the basic assumptions of general engineering mechanics. Therefore, The seismic performance of steel structures is better than that of reinforced concrete structures.
The steel structure has a small self-weight and a small stiffness, so when calculating horizontal earthquake action, the seismic force is often smaller than that of the concrete structure, and its plasticity is strong. It can absorb a lot of energy during an earthquake, so the steel structure is better, but the steel The structure is too soft and easy to produce large horizontal displacement, and the fire resistance is poor. These are all worse than the concrete structure.

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