轨枕埋入式无砟轨道UF500纤维混凝土限制裂纹宽度试验结果

轨枕埋入式无砟轨道道床板采用现浇混凝土，为保证道床的耐久性，国内外对混凝土裂缝的最大宽度均有严格限制规定。以武广客运专线武汉工程试验段RHEDA2000无砟轨道系统为试验对象，进行了UF500纤维混凝土限制裂纹宽度试验，探讨应用新型材料提高道床板混凝土的抗裂性能、限制裂缝宽度的新途径，其结果证实，采用UF500纤维混凝土能够达到限制裂缝宽度的目的。

Study on Test of Limiting Crack Width on Buried BaUastless Track with Sleepers by UFS00 Fiber Concrete

In order to ensure service durability of the slab for buried ballastless track with sleepers, the maximum width of the concrete crack is subject to strict limitation at home and abroad. Taking the ballastless track system for the test section RHEDA2000 in Wuhan of Wuhan-Guangzhou PDL as the object, the test for limiting crack width by UFS00 fiber concrete is conducted to explore new way to increase the anti-cracking performance of slab concrete with new material and limit the crack width. The result proves that UFS00 fiber concrete can play a role of crack width limitation.