G305线田庄台辽河公路大桥主桥施工监控

Monitoring of Construction of Big Bridge's Main Bridge on Tianzhuangtai-Liaohe Highway of G305 Line

如何通过对施工过程的控制,大型桥梁在建成时得到预先设计的应力状态和几何线形,是桥梁施工中非常关键和困难的问题。施工控制有两个方面的主要任务,一是使结构在建成时达到设计所希望的几何形状,二是使结构在建成时达到合理的内力状态,同时在施工过程中保证结构的安全。

The control of construction course, the stress state and geometrical linear, which had been designed in advance and have obtained after complete building, are extremely key and difficult issues in construction of bridge. Construction controlling needs fulfiling two main assignments--first is to make structure attain the geometry required by design when bridge has been built completely;Second is to make structure attain rational state of inter- nal force when bridge has been built. In addition, the structure safety must be guaranteed in the construction.