The design of the upper floor mirrors the base, with voids in the roof slab corresponding with those in the floor plate below.

楼上的设计反应了底层，屋顶板的空隙与下方楼板的空隙相对应。

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Taking the construction of in-water base slab of Guixi Bridge as an example, the article introduces in more detail the design of the steel sleeve box and the technique of water-avoiding construction.

该文以贵溪大桥水中承台施工为例，较详细地介绍了钢套箱的设计及避水施工技术。

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