ABSTRACT

In this paper, three curved floating bridge concepts with a uniform span of 500 m and different radii of curvature are proposed for the crossing of the coastal waters in Singapore. The bridge girder is supported by 4 pontoons along the bridge length and the two ends are connected to the shore. Three different girder cross-sections are considered. Static analysis is first carried out considering the bridge's self-weight, water current forces and various tidal conditions. Next, eigen value and regular wave analyses are performed to assess the effect of bridge radius, cross-sectional rigidity and end connection on the bridge behaviour. Based on the results, several bridge configurations are selected for further study. Finally, irregular wave analysis is carried out to investigate the realistic bridge performance under operational and extreme environmental conditions. Conclusions are drawn based on the simulation results. Recommendations on the design parameters for further investigations are made.

摘要

在本文中，提出了三种跨度为 500 m、曲率半径不同的曲线浮桥概念，用于穿越新加坡沿海水域。桥梁由4个浮桥沿桥长支撑，两端与岸边相连。考虑了三种不同的梁横截面。首先考虑桥梁的自重、水流力和各种潮汐条件进行静力分析。接下来，进行特征值和正波分析以评估桥梁半径、横截面刚度和端部连接对桥梁性能的影响。根据结果​​，选择了几种桥梁配置进行进一步研究。最后，进行不规则波浪分析以研究在操作和极端环境条件下的实际桥梁性能。根据仿真结果得出结论。对进一步研究的设计参数提出了建议。