写一篇关于地铁车站细部构造防水和柔性防水的论文

摘要：本文旨在探讨地铁车站细部构造的防水和柔性防水的实施方法。首先，介绍了地铁车站细部构造的基本情况；其次，介绍了常用的防水材料和方法；最后，详细分析了地铁车站细部构造中应用的不同形式的防水材料及其特性。 关键词：地下车站、 防水、 柔性材料 Introduction Metro station is an important part of the urban public transportation system. In order to ensure the safety and reliability of metro station, it is necessary to waterproof and protect it from external factors such as rain, snow, wind and temperature changes. Therefore, waterproofing and flexible waterproofing for metro station details are important measures for ensuring its safety and reliability. Materials and Methods The materials used in the waterproofing of metro station details include asphalt-based materials, polyurethane-based materials, polyethylene-based materials, bituminous membranes and other composite waterproofing materials. The most commonly used methods for the flexible waterproofing of metro station details include hot melt method, cold applied method and self adhesive method. Analysis of Different Waterproof Materials Asphalt-based material: Asphalt-based material has good flexibility at low temperatures (-20℃) , good adhesion to various substrates such as concrete or metal surfaces , strong water resistance , long service life (over 10 years) , low cost . It can be widely used in subway stations with high water pressure or large temperature changes . Polyurethane-based material: Polyurethane-based material has excellent flexibility at low temperatures (-50℃), excellent adhesion to various substrates such as concrete or metal surfaces , strong water resistance , long service life (over 20 years) , relatively higher cost than asphalt based material . It can be widely used in subway stations with high water pressure or large temperature changes . Polyethylene-Based Material: Polyethylene - based material has excellent flexibility at low temperatures (-60℃), excellent adhesion to various substrates such as concrete or metal surfaces , strong water resistance , long service life (over 25 years) , relatively higher cost than asphalt based material . It can be widely used in subway stations with high water pressure or large temperature changes . Bituminous Membranes: Bituminous membranes have good flexibility at low temperatures (-20℃), good adhesion to various substrates such as concrete or metal surfaces , strong water resistance , short service life (up to 5 years) but relatively lower cost than other materials . They can be widely used in subway stations where there is no need for long term protection from external factors. Other Composite Waterproof Materials : There are also other composite waterproofing materials which have different features depending on their composition. They usually have better performance than single layer membrane structures but also higher costs compared with single layer membrane structures. Conclusion In conclusion, different types of waterproofing materials should be selected according to the specific conditions of each metro station detail structure so that they can provide effective protection against external factors while ensuring safety and reliability of the structure itself.