It is shown by the result that the ability of steel plate to resist local buckling is improved remarkably due to the existence of core concrete.
结果表明，核心混凝土的存在大大提高了钢管管壁抵抗局部屈曲的能力。
2
The steel tube can be fully tapped to improve the seismic performance due to the core concrete to avoid or delay the occurrence of local buckling of steel tube.
Buckling-Restrained Brace (BRB) offer lateral restriction to the steel core to avoid it to buckle, when being suffered big press or pull, and the steel core always can yield.