满足桥下通行要求的城市高架路桥跨布置

Span distribution of urban viaduct considering the traffic capacity under a bridge

分析了城市高架路桥下行车存在的问题,从保证桥下行车安全的角度分析了桥墩净距取值必须满足的条件,给出了各种路段的桥墩最小净距的计算方法.

The article analyses the traffic safety problem under urban viaduct.It also pointed out that the net distance between two piers must ensure traffic safety under viaduct.The calculating method of minimum net distance between two piers in straight or curve road is given.