Comparison of seismic advantages between steel structure and reinforced concrete structure

Comparison of seismic advantages between steel structure and reinforced concrete structure. Material analysis and comparison"Seismic force" is inertial force, concrete structure mass. The inertia force is big, the steel structure mass is small, the inertia is small. So under the same earthquake action, the concrete structure receives the very big force, the steel structure receives the force is small. This is the external cause. Internal causes, high strength of steel construction materials. High energy consumption, that is, ductile materials, there are yield steps, through the envelope curve to energy consumption. And concrete is brittle material! Steel structure is the use of steel is the lowest Q235, most of the steel structure materials are used Q345. The damping ratio of steel structure is usually between 0.01 and 0.02. The damping ratio of reinforced concrete structure is generally between 0,03-0,08. The damping ratio is small, and the deformation is large under the action of earthquake force, because the steel structure is good in toughness, it consumes earthquake energy through deformation, and it is easy to recover. Steel structures are soft and absorb energy mainly through elastic-plastic deformation, and the possibility of brittle fracture is much lower than that of concrete.