Part Ⅰ Railway Environment and Safety

Part Ⅱ Railway Engineering

Part Ⅲ Electrified Railway

Part Ⅳ Vehicle Engineering

Part Ⅴ Transportation Planning and Operation

Part Ⅵ Transportation and Economy 2100433B

Since the issuance of Fundamental Code for Design on RaiLway Bridge and Culvert （TB 10002. 1-2005） ， China has made remarkable achievements in railway construction， in particular high-speed railway （ HSR） . High-speed railways like Beijing-Shanghai HSR， Beijing-Guangzhou HSR，Zhengzhou-Xi'an HSR and Harbin-Dalian HSR，mixed passenger and freight railways like Yichang-Wanzhou Railway and Taiyuan-Zhongwei-Yinchuan Railway， heavy-haul railways like Central and Southern Shanxi Railway and Mengxi-Huazhong Railway， intercity railways like the Pearl River Delta Intercity Railway and Wuhan Metropolitan Circle Intercity Railway have been completed and opened to traffic，improving the railway network structure and increasing the effective supply of railway transportation services. After more than ten years of exploration and innovation， China has made a historic breakthrough and achieved a momentous leap in the construction technology of railway bridges， reaching the world's high level. A number of deep-water and long-span bridges，complex bridges，and bridges in special geological conditions，such as Nanjing Dashengguan Yangtze River Bridge and Wuhan Tianxingzhou Yangtze River Bridge，have been completed successfully and the complete sets of large-tonnage box beam technology researched and developed independently by China have been widely used9 accumulating rich experience and laying a solid foundation for further improving the technical standards of railway bridge.

This Code is prepared according to the requirements of establishing the railway engineering and construction standard system of National Railway Administration and based on the revision of Fundamental Code for Design of Railway Bridge and Culvert （TB 10002.1-2005）， by summarizing the experience and scientific research results in the construction and operation of bridges and culverts of Fugh-speed railways， interaty railways，mixed passenger and freight railways and heavy-haul railways in China， with a view to meeting the demand for the construction and development，unifying the design standards，improving the design level and ensuring the safety and quality of railway bridges and culverts.

In this Code， the principleof safety first is implemented and the technical requirements for quality safety， resource conservation9 environmental protection， risk prevention， and disaster prevention and mitigation are strengthened.The main design criteria for railway bridges for different services and different speed levels are determined rationally in consideration of the national situation， the economic and social development level and environmental conditions of China，further improving the scientificity and technical and economic rationality in terms of bridge and culvert design.

This Code consists of 5 chapters，namely General Provisions，Terms and Symbols，Layout of Bridge and Culvert，Design Loads and Design of Bridge and Culvert，and 5 appendices.

This Code is prepared on the basis of Code for Design on Subgrade o f RaiLway （TB 10001-2005） as per the requirements of National Railway Administration to establish a standard systemfor railway engineering and construction by summing up experience and research results in recent years on earthworks construction and operation of high-speed railway， intercity railway， mixed passenger and freight railway and heavy-haul railway.lt is a comprehensively revised edition to meet the needs for earthworks construction and development，to unify the design standard and improve the design level of railway earthworks，and to ensure the safety and quality of railway earthworks after learning from relevant standards of China and other countries and soliciting opinions on a wide basis.

rrhis Code prioritizes safe operation and emphasizes the technical requirements regarding construction quality， resource saving， environmental protection and disaster prevention and mitigation in view of China- s present conditions9 and economic and social development.lt also specifies the main design criteria of railway earthworks based on different types of traffic and different grades of speed，making this Code more scientific and rational regarding technology and cost efficiency.