京津城际铁路无砟轨道桥梁设计

京津城际铁路是我国第一条建成运营的时速350 km客运专线。设计中贯彻桥梁建设新理念，确保高速条件下列车的安全性、舒适性和稳定性要求，并遵循环境适应性、服务运输和综合效益的设计理念。全线采用长桥方案，桥上采用最先进的无砟轨道技术，桥梁占线路长度的87.7 ％，京津城际铁路桥梁设计、建造的成功，为今后大规模高速铁路建设积累了宝贵的经验，起到了示范性、标志性、样板性工程的作用。

Design of unballasted track bridges in Beijing Tianjin inter city railway

Beijing Tianjin inter city railway is the first built passenger dedicated line with the speed of 350 km/h in our country. During the design, new ideas of bridge construction were carried out in order to ensure the safety, amenity and stability requirements of the train under high speed condition. At the same time, concepts of environmental adaptability, serving for transportation and comprehensive benefits were followed. In the whole line of the railway, long bridge scheme was adopted, and the most advanced technology of unballasted track was utilized in bridges which account for 87.7 % of the total line. The success of the design and construction of bridges in Beijing Tianjin inter city railway accumulated valuable experiences for large scale construction of high speed railway at the future. And roles of demonstration, landmark and prototype are played at the same time.