To reduce the steel quantity and improve the stability of columns, a simplified method of selecting the section of box-section columns is presented.
2
本文在以往研究的基础上，从理论进一步分析了钢箱形断面桥墩的抗震性能和部分内填混凝土补强法补强效果。
The paper studied the seismic performance of steel box bridge pier and the strengthening effect of partially concrete-filled strengthening method using finite element method.
3
在立井井筒建设中，我们在原设计的基础上，对箱形永久钢井架凿井的实际方法作了改进。
This text introduced the practice method of the box permanent steel petroleum derrick shaft sinking in the construction of vertical shaft pit shaft.
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