香港机场第三跑道填海工程插入式钢圆筒结构设计

Design of inserted steel cylinder structure for third runway reclamation project of Hong Kong Airport

受钢结构耐久性的影响,国内插入式钢圆筒设计案例较少。基于香港机场第三跑道填海工程,提出一种在深厚软土地基上采用插入式钢圆筒作为陆域形成临时围蔽结构的设计方案。采用日本国际临海开发研究中心OCDI的二维计算理论进行结构设计,并采用Plaxis 3D软件对结构位移和整体稳定性进行复核计算。结果表明,采用OCDI二维理论进行结构设计是安全的,但位移计算结果严重偏小。研究成果可为类似工程提供参考。

Due to the durability of steel structure,there are few design cases of inserted steel cylinder structures in China. Based on the third runway reclamation project of Hong Kong Airport,we propose a design scheme of using the inserted steel cylinder as the temporary enclosure structure for land on the deep soft ground,apply the two-dimensional calculation theory of OCDI for the structural design,and use the software of PLAXIS 3 D to recheck the structural displacement and overall stability. The results show that the OCDI two-dimensional theory for structural design is safe,but the displacement calculation results are seriously small. The achievement can provide references for the similar projects.