Study on Life-cycle Performance State Evaluation Method of Inland River Frame Vertical Wharf

Abstract The port project in the Three Gorges reservoir area is facing a very complex construction environment, such as water level drop as high as 30m, complicated geological conditions and natural disasters. Under the adverse incentives such as rough berthing of ships over tonnage, bank slope instability, overloading, wind and wave, material deterioration and earthquake, the pile foundation inevitably degenerates and accumulates different forms of structural damage. However, the existing analysis and monitoring methods can not know the damage effect of the bad inducement of the wharf, and can not evaluate the structural state of the most seriously damaged pile foundation, so most of the wharves are in a “sub-health” state for a long time. Under this background, this paper deeply analyzes the stress characteristics of the pile foundation of the inland river overhead vertical wharf under complex load conditions, and puts forward a new method which can not only trace the structural damage causes of the wharf, but also monitor the structural health status of the pile foundation itself, which can not only improve the cognitive level of the structural damage mechanism of the inland river overhead vertical wharf, but also guide the elimination of bad incentives in time at the initial stage of structural performance decline, thus ensuring the long-term safety and reliability of the wharf structure.