ABSTRACT
So far, many researches are carried out the influence of marine environment on the durability and mechanical properties of corroded steel, but less studies focus on dynamic buckling of corroded steel structure. Jing (2008) presented a non-linear analysis of buckling carrying capacity of corroded steel bars based on ANSYS, and proposed a corresponding calculating model. Mahmoud (2013) made a research and showed that under seismic loading the long term uniform corrosion has considerable influence on the dynamic buckling of steel tanks with different height to diameter ratios under seismic loading. Kubiak (2007) dealt with the local, global and interactive dynamic buckling of thin-walled structures subjected to compressive rectangular pulse load, and proposed a new criterion for the loss of stability leading by critical amplitude of pulse load. Sakar (2012) devoted to the analysis of static and dynamic buckling of multi-span. And the effects of beam to column length ratio, beam to column cross-section ratio
1 INTRODUCTION
Along with the development and utilization of Marine resources, a large number of steel is used in ocean engineering, such as ships, offshore drilling platform, bridge and port engineering. However in marine environment the durability of steel structure is easily affected by the corrosion in marine environment, it widely received extensive attention of scholars. Chen (2012) gave corrosion laws in two materials (typical carbon steel and low alloy steel) in three zones (immersion zone, mean-tide zone and splash zone) by an experiment in Xiamen. Zhang (2006) focused on the mechanical behavior of corroded steel bar in various environments, and constructed the mathematical models of street-strain for corroded steel bars. Wu (2008) used artificial climate acceleration corrosion method to simulate the mechanical properties of non-uniform corroded steels under natural climate condition, and the constitutive relation model of corroded steel with corrosion rate was obtained. Shi (2012) carried out indoor salt spray accelerated corrosion tests to analyze the mechanical property of Q235 steel with and
and beam to column moment of area ratio were investigated by using the finite element method.
