Reaserch of the state-of-the-art on dual system consider shear wall structure as a flexural type cantalever and consider frame structure as a shear type cantalever, ignoring the shear.

• 框架-混凝土剪力墙体系,框架-支撑体系,框架-混凝土筒体等双重抗侧力体系在工程中应用非常广泛。