导梁的长度、刚度及重量在顶推施工阶段对顶推主梁的内力有着重要的影响，其合理配置是全桥顺利顶推的关键。
The length, rigidity and weight of a launching nose have significant influences on the internal forces of incrementally-launched main girder at construction stage.
别推我，要不我会用我的角顶你。
现有海洋顶推运输的优点是造价低，在经济航距以内其运输成本也低；
Modern deep sea push barge shipping has the advantages of lower initial cost and lower running cost within economical navigation distance.
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