jacking

The design conception of jacking gear of offshore self-elevating platform is studied in detail including the structure, control principle, the strain analysis during running and elevation and subsidence power of the jacking gear and so on.

从升降系统的结构形式、控制原理、工作过程载荷分析以及升降功率容量分析等方面，较为详细地分析了海上自升式平台升降系统的设计思路。

Considering in-situ test jacking force, calculation for jacking force is studied theoretically under the condition of mudstone, and jacking force calculation formulary is deduced by the linear regression.

结合顶管工程现场实测数据，对泥岩地质条件下顶推力的计算进行了理论分析，并通过一元线性回归得出在该地质条件下顶推力计算的经验公式。

Based on this case, a creative method of jacking culvert box within pipe roof is presented, otherwise called RBJ construction method ( Roof-Box Jacking Method).

结合工程实际，提出了创新的管幕结合箱涵顶进的施工工法-RBJ工法（Roof-Box Jacking Method）。