下穿京九铁路超宽顶进式排水框架桥的设计与实践

为总结大型下穿铁路顶进式排水框架桥的设计经验,对天堂河改道下穿京九铁路5-16 m超宽排水框架桥的工程特点进行总结,并对设计中采用的技术措施进行详细阐述;利用框架桥主体结构的有限元计算数据与实际施工中框架桥监测数据进行对比分析,进一步印证这些创新性的设计措施的先进性、合理性、可靠性,得出这些设计经验可以作为其他类似结构进行设计时参考的结论,为我国铁路行业今后建造更大规模的此类桥梁拓宽设计思路。

Design and Practice of Beijing~Kowloon Railway Super Wide Drainage Frame Bridge Jacked in Place

To summarize the design experiences of large drainage under railway frame bridge jacked in place,this paper focuses on the engineeringcharacteristics of Beijing ~ Kowloon Railway 5-16 m super wide drainage frame bridge under Paradise River Diversion Program,and the technical measures taken in the design.The advancement,rationality and reliability of the innovative design measures are verified by comparative analysis and the finite element calculation data of frame bridge main structure and the monitoring data from site construction.The design practices can serve as references for the design of other similar structures and broaden design concepts for building this kind of bridges of larger scale.