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    • 8. 发明申请
    • Collapse-resistant frame system for structures
    • 用于结构的抗倒塌框架系统
    • US20020002801A1
    • 2002-01-10
    • US09902065
    • 2001-07-10
    • Gregor D. FischerVictor C. Li
    • E04B001/98E04H009/02E04H012/00E04C003/30
    • E04C3/46E01D19/00E04B1/2403E04C3/44E04C5/073E04H9/02F16B2200/403Y02A30/336Y10T403/3906Y10T403/3913
    • A collapse-resistant frame system (10) for a bridge or building structure includes a plurality of mechanically-interconnected columns (12) and beams (14). At least the lowermost columns are formed of a material (28) that exhibits quasi-elastic behavior in response to seismic excitation, while the beams of the frame system are formed of a material (22) that exhibits elastic/plastic behavior, such that quasi-elastic flexure of the columns under seismic loading will cause plastic hinge formation in the beam ends (26) to thereby dissipate the rotational energy without significant plastic hinge formation in the column bases. In a disclosed embodiment, the column material is an engineered cementitious composite (ECC) matrix (30) reinforced with fiber-reinforced plastic (FRP) (32) to thereby provide a relatively-high flexural strength member having a relatively-lower flexural stiffness and higher elastic deformation limit, while the beam material is an ECC matrix reinforced with mild steel rebar (34) to thereby provide a relatively-lower flexural strength member featuring high energy-absorbing capacity.
    • 一种用于桥梁或建筑结构的抗倒塌框架系统(10)包括多个机械互连的柱(12)和梁(14)。 至少最下面的柱由具有响应于地震激发的弹性特性的材料(28)形成,而框架系统的梁由具有弹性/塑性行为的材料(22)形成,使得准 在地震荷载下的柱的弹性挠曲将导致梁端部(26)中的塑性铰链形成,从而消散旋转能量,而不会在柱底部中形成明显的塑性铰链。 在公开的实施例中,柱材料是用纤维增强塑料(FRP)(32)增强的工程水泥基复合材料(ECC)基体(30),从而提供具有相对低的弯曲刚度的相对高的弯曲强度构件, 更高的弹性变形极限,而梁材料是用软钢筋(34)加强的ECC基体,从而提供具有高能量吸收能力的相对较低的弯曲强度构件。