Performance evaluation of prefabricated retaining wall systems based on centrifuge tests

Abstract

Prefabricated and assembled retaining wall systems are gradually becoming the preferred choice for slope stabilization and earth retaining structures. However, current prefabricated retaining wall systems are often difficult to apply in complex and variable construction sites due to issues such as inconsistent production dimensions and transportation difficulties. This paper presents a novel prefabricated retaining wall system and reports centrifuge model tests performed to analyze its overall performance. The influence of different infill materials on the performance of the prefabricated retaining wall system was studied. The research findings reveal that the retaining wall system provides significant slope stabilization effects, and can withstand up to 4 times the stress level of natural slope. Moreover, the stability of the retaining wall system is more than twice better when infill with frictional soil, compared to clay infill. Due to its unique structure, it can not only reduce material consumption and carbon dioxide emissions around 63.94%, but also plant green plants in the gaps of components, thereby providing a more sustainable alternative to conventional concrete gravity wall systems.