Overhead River Pier Wharf Degradation Structure And Reliability Analysis

In the design of the reference period,the port of reinforced concrete structures in the natural environment and loads,reinforced concrete material strength degradation over time,leading to decay resistance force members over time,eventually leading to a gradual degradation of the carrying capacity of the wharf structure. In this paper, heavy steel limestone transportation system expansion and reconstruction project for the terminal project basis, according to the characteristics of inland pier wharf during the loading operation environment, combined with the water level in the lifting process, each ship impact force, the ship mooring force, the force of the water leading variable action, analysis and berthing pier pile pillar under different load combination of force model under various load conditions;When the variation of the basic parameters and statistical characteristic resistance force member through the introduction resistance formula to calculate the statistical value of the variable resistance; Application of reliability theory to force member carrying capacity reliability analysis。Mainly do the following:First, member strength degradation from the starting point, summarizing the previous analysis of reinforced concrete structures for the port of degradation of strength theory, calculated according to the force component specification on the resistance, considering the resistance variation of the basic parameters and the statistical characteristics over time, analysis and calculation resistance value changes with time. Reliability theory is based on the port project structure, the role of the distribution parameters of load effects on harbor engineering structures for statistical analysis, reliability analysis carried out for the following preparation.Then, with an engineering example, the use of finite element software ANSYS overhead pier wharf berthing pier for static calculation, respectively, the ship mooring force, ship impact force, the force of the water leading variable effect on various combinations working conditions each by moment, shear, axial force action force members were analyzed.Finally, the theory of structural reliability, the establishment of port engineering ultimate limit equation, according to JC law iterative process for each major force component at each period of time using the representative structure becomes a reliable indicator solved by programming and analysis.