常泰长江大桥水域通航环境综合风险评价

Comprehensive Risk Assessment of Navigable Environment of Changtai Yangtze River Bridge

常泰长江大桥连接常州与泰兴两市,是一座集高速公路、城际铁路与普通公路三合一的跨江桥梁,是世界上主跨跨度最大的公铁两用斜拉桥,目前处于施工期间.由于工程建设施工难度和施工工艺达到新的高度,桥位水域江面宽阔,主河槽水深流急,船舶交通流密集,施工期间桥区水域一旦发生事故,后果不堪设想.本文通过对在建常泰长江大桥桥梁水域通航环境影响因素的调研分析,构建桥梁施工期间水域通航风险综合评价模型并进行计算分析,计算结果能够客观准确地反映在建常泰长江大桥施工水域的通航风险状况,为业主施工单位及海事主管部门控制把关风险源提供科学的决策依据和参考.

Changtai Yangtze River Bridge connects Changzhou City and Taixing City.It is a river-crossing bridge integrating expressways,intercity railways and ordinary highways.It has surpassed Shanghai-Nantong Yangtze River Bridge to become the longest cable-stayed bridge for both railway and road in the world.At present,the Changtai Yangtze River Bridge is under construction.Due to the difficulty of the construction and the construction technology,the river surface of the bridge area is wide,the main channel is deep and fast,and the ship traffic flow is dense.Once an accident occurs in the bridge area during the construction,the consequences would be unimaginable.Based on the investigation and analysis of the factors affecting the navigable environment of the planned changtai Yangtze river bridge,this paper builds a comprehensive evaluation model for the navigable risk of the planned changtai Yangtze river bridge during the bridge construction period and carries out calculation and analysis,and the calculated results can objectively and accurately reflect the navigable risk of the planned changtai Yangtze river bridge construction area.It provides scientific decision-making basis and reference for the owner's construction unit and the maritime administrative department to control and check the risk sources.