目的建立平行钢丝拉索疲劳寿命的理论分析模型，为平行钢丝拉索的设计及疲劳评定提供理论依据。
In order to provide the theoretical basis for design and safety assessment of parallel wire cable fatigue properties, the fatigue life model of parallel wire cable is established.
预先装配的平行钢丝索与结构钢缆相比，不需要预拉。
Preassembled parallel wire strands, in contrast to structural strands, do not require prestretching .
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