To evaluate the fatigue life of tower crane, research the load status of tower crane.
目的研究塔式起重机工程载荷状态，提供评估塔式起重机疲劳寿命的依据。
On the basis of this index, the status of load on each node is judged.
根据该指标，可以判定各节点机的负载状态。
On the basis of this index, the status of load on each node is judged.
根据该指标，可以判定各节点机的负载状态。
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