Generally in steel structure engineering construction, when the main structure of steel structure and reinforced concrete podium structure are connected, this part of the main structure should adopt the steel concrete structure, which is conducive to the structural connection between the two.
Moreover, steel - reinforced concrete beams have lower cost and better fire resistance than steel structures.
The steel reinforced concrete column can play the role of concrete compressive strength, its section is smaller than the reinforced concrete column, but the steel quantity is smaller than the steel, can reduce the cost accordingly. Reinforced concrete has good fire resistance and can avoid the use of expensive fire retardant coatings. Reinforced concrete columns are more convenient than steel columns.
Plasticity is better than reinforced concrete structure, stiffness is better than steel structure.
Although the damping ratio of reinforced concrete is almost the same, the ductility is improved and the hysteretic curve is fuller. Because the section of steel concrete column is larger than steel concrete column, the corresponding stiffness is also larger.
Not only is the construction speed faster than the reinforced concrete structure.
The construction of steel - bone concrete column structure is characterized by forming steel - bone concrete beam structure first and then carrying on cross construction. In this case, steel-reinforced concrete columns can be used as load-bearing structures, saving a lot of scaffolding. Compared with steel reinforced concrete column, it can speed up the construction and shorten the construction period.
In the absence of steel concrete beams, the floor is cast with steel beams and profiled steel plates, and the construction speed is even close to that of steel structures. Therefore, one of the reasons why some steel structure projects use steel - reinforced concrete beams.
