中国高速铁路简支梁综述

Comprehensive comments on simply- supported girders of high- speed railway in China

研究不同速度等级线路中简支梁的结构型式,探讨其力学特性并与规范限值进行对比,阐明高速铁路简支梁桥应用的合理性和必然性;探讨我国高速铁路桥梁设计中的人性化设计与美学考量,并介绍标准化施工的步骤及其质量控制体系。研究结果表明:我国高速铁路简支梁桥结构合理,各项设计指标较为保守,结构造型美观,人性化的构造便于施工和维护管理。针对已建高速铁路桥梁存在或可能存在的问题进行分析,提出中国高速铁路桥梁未来的工作重点和方向。

In this paper, the structural types of simply - supported girder of high speed lines in different speed levels were discussed, and the mechanical features and the set limits were compared. Then the rationality and necessity of the application of HSR simply - supported bridges were interpreted. The Aesthetic considerations and humanization designs in HSR bridge design were further discussed. Meanwhile, the standardized construction procedures and its quality control system were introduced. The research results show that the HSR simply -sup- ported bridges in China are structurally reasonable, and their design indexes are relatively conservative. The configurations are artistic and the humanized conformations are easy for construction and maintenance management. Through the analysis of the problems existed or maybe existed in the HSR bridges, the emphasis and direction of future HSR bridges in China are proposed.