Anti-slide Pile Design And Construction Of Swelling Soil Landslide

This article aims to study prevention and cure of swelling soil landslide with anti-slide pile. Engineering characteristics of swelling soil, application and development state of anti-slide pile, design procedure and applying condition are all introduced. For the regulation of swelling soil landslide of Ankang Dongbianzu Station in Xi'an-Ankang Railway, simplified mechanical model of landslide and anti-slide pile is created, then formation causes of swelling soil landslide and mechanism of action of anti-slide pile are analyzed. By adopting limiting equilibrium theory and transport coefficient method, landslide pushing force and residual anti-slide force before pile are calculated. During the calculation of anti-slide pile with cantilever pile calculating method, anti-slide pile is separated into load-bearing section and anchoring section. This article illuminates acquiring approach of calculating parameters, calculating method and steps, and summarizes concrete construction crafts and matters need attention. Meanwhile, through post-construction monitoring, monitoring value is compared with theoretical value, then error causes between them are analyzed. Applying results indicate: monitoring value(1.63 cm) of displacement of pile cap is very close to theoretical value(1.93 cm), which proves the success of anti-slide pile design and verifies the rationality of calculating method and parameter acquiring method. Because design front pile width cannot reflect actions of pile-soil composite and soil arch between piles roundly and side friction force between pile and soil and action reinforced concrete of pile protection wall are not considered, error between calculating value and monitoring value arises.