Analysis of force characteristics of “pile-wall” structure based on elastic foundation beam method

A dual-purpose wall structural system considers temporary perimeter piles as part of the underground structure in normal stage; however, there is a lack of effective theoretical formulas to predict node reinforcement forces, pile wall internal force patterns, and load-sharing characteristics. To analyse the force characteristics of the dual-purpose wall structure, we established a simplified model to derive the internal force equations of the pile wall and nodes with and without connection nodes. Subsequently, we analysed the pile–wall internal force of the dual-purpose wall structural system and the internal force of the pile wall with and without connection nodes using finite element software. The results show that analytical solutions of the pile wall agree well with the numerical simulation results, and that the derived formulas for the pile-wall internal forces are reliable. These results deepen our understanding of the force characteristics of dual-purpose wall structures, which can be used as a theoretical basis for the promotion of dual-purpose wall structures in engineering design.