Abstract

Info

Title:: Research on Passive Soil-arching Effect Before Cantilever Anti-slide Pile

Author(s):: LUO Li-juan; XIA Xiang-bo; WANG Rui; CHEN Yue; School of Civil Engineering, Chang’an University

Keywords:: cantilever anti-slide pile; passive soil-arching effect; model test; numerical analysis; cohesion; internal friction angle

Abstract:: Based on the 1∶10 physical model test on soil-pile interaction, the formation tendency of soil-arching effect in passive areas before cantilever anti-slide piles was discussed preliminarily. In addition, the analysis of numerical model was constructed to study the formation process and influence factors of passive soil-arching effect before cantilever anti-slide piles by using ANSYS, the influences of horizontal displacement of pile, pilespace, soil cohesion and internal friction angle on passive soil-arching effect were analyzed. The results show that the passive soil-arching effect appears in a certain range of passive area before two adjacent piles, and strengthens with the increase of horizontal displacement of pile and with the decrease of depth, and the range of soil-arching grows larger. With the increase of pile-space, the passive soil-arching effect weakens gradually, the shape of soil-arching becomes steep firstly and then becomes smooth gradually. The soil cohesion plays a positive role in passive soil-arching effect, but the internal friction angle has little influence on passive soil-arching effect.