广珠城际轨道交通连续梁桥徐变观测与分析

Observation and analysis of creep of the Guangzhou-Zhuhai intercity rail transportation continuous bridge

桥梁的徐变变形控制是城际轨道质量控制的重点,为了满足轨道梁对变形的高精度要求,保证城际轨道安全、稳定运营,文章以广珠城际轨道交通外海特大桥为工程背景,对城际轨道支架预压现浇三跨连续梁进行徐变变形观测,进行徐变仿真分析,验证设计、施工的合理性,并提出相关建议,为今后类似工程施工提供借鉴。

Control of creep deformation of the bridge is the focus of inter-city rail quality control.In order to meet the requirements ofthe high precision on the deformation of the rail beam, to ensure the security and stability operations, we took the Guangzhou-Zhuhai intercity rail bridge outside the sea as the project background, observing the creep deformation of the preloadiug cast bracket of the three-span continuous beam bridge of the inter-city rail.Then we did creeping simulation and analyzed the statistics,to verify the rationality of the design and construction, and to give suggestions for future similar projects for reference.