预弯预应力混凝土梁在人行天桥上的应用

Pre-bent PC Girder on Pedestrian Overpass

结合工程实例 ,采用预弯预应力混凝土梁 ,解决了要求天桥跨度大、梁高低的问题 ,采用半预制半现浇的施工措施 ,解决了妨碍交通和满足吊装重量的问题。而且维护费用低。预弯预应力混凝土梁应用在20～40m跨径的人行天桥中 ,有很大的优越性。

In engineering practice, the problem of large span and small girder depth required by the pedestrian overpass is solved using the pre-bent PC girder. Traffic blockage is lessened and lifting weight satisfied when construction is carried out by partial precasting and partial casting in-situ, the cost for maintenance reduced to the minimum. This technique is most advantageous when used on overpasses with a span of 20～40m.