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1·In combination with steel box girder construction by incremental launching method, the paper introduced the construction technique of variable depth curved steel continuous box girder.

结合钢箱梁顶推实例，介绍了变高度曲线连续钢梁顶推施工技术，总结了该施工方法的经验，对类似桥梁的施工有参考价值。

2·The length, rigidity and weight of a launching nose have significant influences on the internal forces of incrementally-launched main girder at construction stage.

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。

3·The structure of high web is often adopted in the overhead launching gantrys main girder that are connected by the high-strength bolts.

造桥机主梁一般采用高腹板箱梁结构，主梁之间通过高强螺栓群相互连接。

4·In this paper, some key problems of applying incremental launching in cable-stayed bridge with steel box girder are studied and discussed, for the design and construction of bridges alike.

而钢箱梁顶推施工近期应用日益广泛，但是理论研究却滞后于工程设计实际，因此，本文选择钢箱梁斜拉桥顶推施工的关键问题进行分析，为同类桥梁的设计和施工提供参考。

5·However, there is no feasible method for quantitative assessment of the strength of hull girder and safety of airbags during launching process.

近年采用气囊下水的船舶重量不断增大，下水安全性问题日益突出。