杭州湾跨海大桥栈桥钢管桩涡激振动研究

根据栈桥设计标准中的工作状态和非工作状态两种工况分别进行了相应流场参数计算,并利用判别理论,对杭州湾南岸栈桥钢管桩是否会发生涡激共振进行了判断。在非工作状态下考虑了十年和二十年一遇标准两种情况,在钢管桩的自振固有频率计算中,考虑了流体附加质量和局部冲刷深度;结合结构及施工情况,对可能发生涡振的钢管桩提出了有针对性的技术措施。

Vortex Shedding Study of the Trestle Steel Pipe Piles on Hangzhou Bay Bridge

This paper calculates current field parameters according to the work and non-work state of the trestle design standard. Whether vortex shedding (or strumming) will happen was judged by making use of differentiate theory to the trestle steel pipe piles in the south bank of Hangzhou bay . In the non-work state two instances of standard encountering in ten and twenty years once was taken into account. Local scour depth and fluid additional-mass were included when calculating the inherence frequency of steel pipe piles. Combining configuration and construction cases pertinence technique measure was put forward to the likely strumming piles.