Physical modeling of pile-tunnel-micropile interaction to investigate micro-pile effects on existing pile during tunneling

New tunnel construction near deep and shallow foundations increases concerns about pile failure and harm to nearby structures. exists Because there have been so few studies on the interactions between tunnel and pile and micro pile, as well as the impacts of tunnel excavation on existing piles, engineers use conservatism in design to solve these problems. The influence of the number, length, and distance of the micropile on the settlements and bending moment formed in the pile should be explored in the current study. Piles and tunnels are made of aluminum. The micropiles utilized are likewise formed of steel wire and measure ۲۰, ۲۵, and ۳۰ cm in length. The tunnel excavation process has also been simulated by deflating rubber tubes. The study of the experiment findings shows that the existence of a micropile reduces the settlements produced in the pile. Additionally, less settlement is produced in the pile the closer the micropile is to the pile and the tunnel. The obtained data demonstrate that the amount of pile settlement reduces with increasing pile length and number.The findings also demonstrate that as the distance between the micropile and the pile increases, the bending force in the pile decreases. Additionally, as the number of micropiles rises, the maximum bending moment also rises.

کلیدواژه ها:

micro- pile ، pile ، physical modeling ، tunneling