The distributing vector of bridge condition on bearing capacity was predicted for new bridge, existing bridge and the bridge undergoing reinforcement. A new prediction index was put forward.

针对新建桥梁、在役桥梁以及考虑加固的桥梁分别给出其承载力可靠度分布向量预测公式，并提出承载力预测指标。

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The cross sectional area of the distributing concrete every unit length should be not suitable less than 35% of the ratio of reinforcement;

单位长度上分布钢筋的截面面积不宜小于单位宽度上受力钢筋截面面积的35％；

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