Application of Empty Box Load-reducing Retaining Wall in Deep Filled Foundation

The normal box-type retaining walls are mostly gravity retaining walls formed by filling in the box-type concrete structure, used in road engineering; while the empty box-type retaining walls are mostly used in hydraulic structures. According to the conditions of low foundation bearing capacity and limited space, the design of empty box-type retaining wall can meet the engineering requirements of the project, which not only meets the needs of basement covering and retaining soil, but also meets the requirements of foundation bearing capacity. The economic effect is obvious. A reasonable calculation method is chosen for this unconventional structure. The conventional gravity retaining wall stability checking method is used to check the anti-sliding stability, anti-overturning stability and foundation bearing capacity of the retaining wall, and then the finite element modeling is used to simulate the process of structure construction and filling, analyze the most unfavorable internal force condition of complex box structure, and carry out reinforcement calculation. The calculation principle is clear and the results are accurate, which can be used as a reference for the calculation method of complex retaining structure.