The Study Of An Obstructions' Intelligentized Assessment Program In Water-way And The Professional Easing Measure For The Obstruction

Since 1990's many bridge has been established in the Yangtze River in the P.R.C: more and more structures above and under water appeared. It is reported there will be 60 bridges across the river till 2010. And therefore the traffic will be severely affected. As far as the Wuhan Changjiang Bridge concerned, due to the effects of 8 piers, the silt has grown up to the Hanyang upstream. In 2001, sands' area amounted to 90,000 m2, and the fairway width was decreased to 80m and the water depth less than 3.2m. Obviously the state-uniformed standard for the waterborne structures is urged to regulate them effectively. Although in the practical use, some standards were carried out by the relevant departments in china, and they have some related contents in some aspects, many aspects can not meet the requirements of new times. Furthermore those standards are distributed and developed by different departments.In this paper, the research work is base on the developments of MSA of the P.R.C: procedures of risk assessment for obstruction above and under water. In addition, many standards in force were collected. Finally the quantified work for the assessment standards was completed, and a computer program coded by VB was developed and utilized for the assessment for water area in vicinity of Wuhu Changjiang Bridge. The utilization proved the platform is reliable to some degrees. Since rare those kind work are conducted, the work is valuable to similar further work. The further work and a team work is also recommended for the later practical utilization..Meanwhile an expert system was explored during the establishment of intelligent platform for the obstruction's risk assessment and based on the standards in the assessment system established by MSA of the P.R.C. In the paper a concept of ship domain was introduced and the inland water ship 3D domain model was presented. As a case study the model under environmental stress in the bridge water area was studied. It is expected to be a new approach and theory for the setting of obstruction easing facilities such as navigational aids in the bridge water area.