高速铁路悬浇连续梁桥施工监控关键技术研究

以京沪高铁丹阳至昆山特大桥为工程背景,通过理论预测与实测反馈分析研究了高速铁路悬浇连续梁桥施工监控中梁体线形控制技术,探讨了施工过程中影响梁体线形的主要因素。结果表明:预应力、节段自重、截面刚度、温度及徐变是影响线形控制的关键因素。

Research on Cantilever Casting Construction Control Technology of High-speed Railway Continuons Bridge

Through theoretical analysis and actual test,the high-speed railway bridge from Danyang to Kunshan is taken as an example to research the technology of controlling beam line during construction,and the main factors which influence beam line is also analyzed.The research results indicate that prestress,beam weight,beam stiffness and temperature are the main factors which influence beam alignment。