To investigate the performance of the belled tilted bracing， field static load tests were conducted on single piles to explore the bearing characteristics of the belled tilted strut with a bearing stratum of medium-dense silty sands. The results revealed a gradually varying Q-s curve development pattern， indicating that the strut exhibited typical end-bearing pile behavior. Three-dimensional numerical simulations exceeding the in-situ test load range were performed for single parametric analysis to identify key design factors influencing the bearing capacity of one belled tilted strut. The analysis demonstrates that the bearing stratum at the pile tip should be rationally selected according to the site geological conditions， and the reasonable bracing length can be comprehensively determined considering the slenderness ratio of concrete-filled tube. Additionally， increasing the bearing base volume significantly enhances bearing performance without compromising construction efficiency or adjacent pile safety. These findings provide guidance for the design and calculation of practical applications of belled tilted struts.