新型复合防排水板在达成铁路基床中的应用

Application of a New Kind of Composite Waterproof and Drainage Board in the Dacheng Railroad Beddding Design

川东红层(红层泥岩)遇水后易软化、崩解,且有一定的膨胀性,因此压实的红层泥岩填料要严格控制其浸水。而在动荷载的作用下,基床是最易发生病害的,因此设计中如何对基床进行有效的防排水是路基设计的关键。介绍了一种新型复合防排水板在达成铁路基床设计中的应用。

Dacheng railroad across Sichuan Basin consisting of Mesozoic Sandstone and Mudstoneo The mudstone is softened and disintegrated easily when contacts with water, and it has characteristic of expansibility. Therefore, compacted fill material consisting of red mudstone is restricted for water entrapping. On the other hand, road disease often occurs in bedding under dynamic loading. So waterproof and drainage design is a key link in the design of road. An application of a new kind of composite waterproof and drainage board in the bedding design for Dacheng railroad construction is introduced in this paper.