Study on the position of load box for pile foundation of Qilu Yellow River Approach Bridge

In theory, the balance point position of O-cell pile test is determined and unique, load box should be located at this point. But in practical projects, it difficult to determine accurately. The foundation Qilu Yellow River Approach Bridge bears a large load. order reduce risk caused by test, double technology adopted project. According design, soil properties loading sequence, bearing capacity before after grouting estimated. results show that project successful example for technology.