深水海域非通航孔桥梁防撞数值模拟

Numerical Simulation of Anti-Collision Design of Non Navigable Spans of Deep Sea Bridge

结合深水海域桥梁的防撞研究特点,依据桥区环境特点及非通航孔的防撞要求,有针对性地提出适合深水海域桥梁的防撞方案,考虑采用小水线面浮式拦截系泊体系来保护大桥的非通航孔桥墩。该防撞体系具有更好的耐波性和对恶劣海况的适应性,采用数值模拟计算与物理模型试验相结合的方法分析深水海域桥梁的防撞问题,分析体系的环境适应性,并研究该体系在船舶撞击下的有效性。通过比较分析发现,数值模拟计算结果与物理模型试验数据基本吻合,可确保深水海域桥梁非通航孔防撞方案设计的可行性,为在实际工程中应用提供技术储备。

The features of deep sea bridge anti-collision and the bridge environmental characteristics are taken into account.The anti-collision scheme for a deep sea bridge with small waterplane intercept floating mooring system to protect the bridge pier.This kind of new anti-collusion system has higher adaptability in the rough sea condition.The anti-collusion design is examined with both numerical simulations and physical model tests.The effectiveness and the environmental adaptability are analyzed in particular.The comparison between the results from numerical simulations and physical model tests show good agreement,meaning that the numeric method is good enough for practical engineering application.