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当采用美国规范 LRFD(荷载和抗力系数法)对结构进行验算时,其实质就是使用极限状态理论。
LRFD方法采用两种类型的分项系数:
LRFD 主要用于以下岩土问题的分析:
LRFD 采用不同于其他验算方法的设计状况分类(强度极限状态I,服务极限状态I,极端事件极限状态I)。.