Cracks cause analysis and research on the crane rail beam of Zhanjiang plant coal wharf port

Through the concrete, steel material mechanics and chemistry special inspection on track beam, and rail beams bearing capacity of calculation and analysis, explicit Zhanjiang plant coal wharf portal crane rail beam crack formation is mainly due to water corrosion of reinforcement and long-term erosion caused by the joint action of dynamic loads. After running 15 years, the corrosion quantity of rail beam rebar is 0.7 mm, in the late period of development steel corrosion, directly affects the structure of bearing capacity. The corrosion of reinforcement concrete and reinforced area decreasing, reinforced bite force weakened, lead to a significant long-term operation structure safety hazard. On the assumption that, under the rebar corrosion quantity with running time, the structure of the bearing capacity of growth will no longer meet the requirement of the engineering specifications. Analysis and study of the causes of cracks in the future for terminal maintenance and reinforcement of operation management and provide scientific basis, for similar project offers a useful reference.