On the condition that same axial compression ratio, bearing capacity and stiffness of RC frame columns increases with concrete strength grade after the construction member achieve yield strength.
相同轴压比条件下，构件达到屈服荷载后，构件的承载力和刚度都随混凝土强度等级的增大而提高。
The yield and tensile strength of the welded joints of the two kinds of materials increase under dynamic loading and prestrain condition that have little effect on the plasticity of structural steel.
两种材料焊接接头在动载和预应变下的屈服强度和抗拉强度均有所提高，但对其塑性影响均不大。
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