The strain criterion for ductile shear failure based on the maximum principal shear strain is established.
据此，建立基于最大主剪应变的岩土材料延性剪切破坏应变准则；
According to capacity design philosophy, brittle shear failure inside ductile members must be inhibited, to insure adequate rotation capacity of the plastic hinge.
按照能力设计思想，必须防止延性构件内部发生脆性剪切破坏，以确保塑性铰的转动能力。
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