苏通大桥冲刷防护工程及桥区河床河势监测研究

介绍苏通大桥营运期冲刷防护工程及桥区河床监测方案,分析了桥梁防护工程实施前后及营运期河床冲淤情况,对冲刷防护工程稳定性与防护功效、桥轴线断面、桥区主流及深泓近期演变等进行分析评价,认为苏通大桥冲刷防护工程具有较好的稳定性；目前桥区河床总体稳定,新通海沙围垦工程对长江-30 m深槽的影响尚未显现.

Scouring Protection Project and Monitoring of Riverbed and River Regime for Sutong Bridge

The scouring protection project and the monitoring of riverbed and river regime for Sutong bridge are introduced in this paper. The scour and siltation are analyzed before and after the scouring protection project and during the operation period. The stability of scouring protection project and its effect, the riverbed profile along bridge axis, mainstream and thalweg evolution around bridge site are assessed. The results show that, the scouring protection project of Sutong bridge has good stability, which has achieved its desired effect. Currently, the riverbed of bridge site is overall stable ; meanwhile, the effect of Xintong sea sand reclamation project on the - 30 m deep zroove of Yan~ze river has not aDoeared.