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中小跨度桥梁活载设计标准对于高速铁路有着十分重要的作用,活载对高速铁路桥梁的强度以及刚度等都有着十分重要的作用,直接关系到桥梁的使用寿命以及使用性能。本文以中小跨度桥梁设计为研究内容,分析高速铁路中小跨度桥梁设计活载的意义,分析了我国现今高速铁路中桥梁活载设计的常用结构,探究了车辆荷载在高速铁路中小跨度简支梁以及连续梁中的效应,对高速铁路常见的运营车辆荷载以及活载进行了比较分析,以中小跨度桥梁为对象对高速铁路桥梁的活载设计进行探讨。
The live load design standards of medium and small span bridges play an important role in high-speed railway. Live load plays an important role in the strength and stiffness of high-speed railway bridges, which directly relates to the service life and service performance of bridges. This paper takes the design of medium and small span bridges as the research content and analyzes the significance of the design live load of the medium and small span bridges of high speed railway. It analyzes the commonly used structure of the live load design of bridges in high-speed railway in our country, Continuous beam effect, the common high-speed railway operating vehicle loads and live loads were compared to small and medium-span bridges as the object of high-speed railway bridges live load design is discussed.