京沪高速公路连续梁桥劣化支座更换关键技术

Key-technology on Degraded Bridge Bearings Replacement of Jinghu Highway Bridge

采用扁平千斤顶对京沪高速公路桥梁病害支座通过顶升的方法进行支座更换,根据本文提供的计算方法可较为合理地确定顶升方案、千斤顶的数目和顶升高度,据此可有效地对施工进行控制,还给出了该施工实例的技术措施,计算方法方法和施工经验可供同类工程参考。

The degraded bridge bearings are replaced by jacking up with flat jacks,and numbers of jacks and height of jacking up with calculating method proposed in the paper are determined rationally.According to the results, processing of construction can be controlled effectively.In addition,technical measures of this construction are given. The methods and experience involved in the paper may be referred in similar engineering cases.