关键词: 客运专线, 铁路隧道, 仰拱, 移动模架, 混凝土捣固, 防变形技术

Abstract:

A simple movable formwork trolley is designed for the casting of the inverts of tunnels on passengerdedicated railways, on basis of summarizing the conventional invert construction technologies, so as to speed up the construction and reduce the construction cost, with the construction of the invert of the entrance section of Dazhai tunnel on GuiyangGuangzhou Railway as an example. The construction of the tunnels on the highstandard passengerdedicated railways can be effectively improved due to the application of the simple movable formwork trolleys. The practice shows that the simple movable invert formwork trolleys are superior to the conventional formwork trolleys and have resulted in rapid construction and good economic benefits.

Key words: passengerdedicated railway, tunnel, invert, movable formwork trolley, concrete compacting, deformation prevention technology