双块式无砟轨道混凝土裂缝计算公式研究

Study on Calculation Formulas of Concrete Crack in Double-Block Ballastless Track

论述了混凝土裂缝产生机理、原因和计算方法,对照德国和日本无砟轨道裂缝计算方法和计算公式。分析了我国桥涵设计规范与混凝土结构设计,并对双块式无砟轨道的裂缝进行了初步计算,得出采用我国规定的两种裂缝计算方法后其结果基本一致。

This paper analyzes the formation mechanism of concrete crack, cause of formation of crack and its calculation methods, and it studies on the calculation methods and calculation formulas of crack in ballastless track in Germany and Japan respectively. Then it analyzes the calculation of concrete crack in the bridge and culvert design specifications and concrete structure design specifications in China, and it preliminarily calculates crack in the double-block ballastless track, finally it finds out that the calculation results by means of using the above-mentioned calculation methods of crack are identical basically.