To ensure the reasonable design and the safe construction of Zhenyang bridge across the Yangzi river, the study on stability of construction zone of the bridge is of great importance. The paper introduces the way of how to establish a evaluation model to analyse the stability of the zone by using the technique of Artificial Neural Network (ANN). The model has been proven in the practice as effective.%本文以镇扬大桥工程区为例，运用优势面区域稳定性评价理论，构建了基于ANN的优势断裂评价模型，实践表明所建立的ANN评价模型是可行的，且取得了较好的效果。
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