The Hong Tu Big Bridge Enduring Function Examination Research

Develop continuously along with the transportation business, the bridge construction strength enlarges continuously, the enduring function problem that are being used bridge causes the people's attention more and more. Enduring function of the bridge structure affects the factor to mainly have the concrete carbonization and reinforcing bars rust eclipse, freezing to melt circularly, Alkali aggregate response and so on. The main basis that enduring function problem of bridge evaluation comes from the solid bridge examination of the spot. For durable function that are being used bridge we go on checking measuring and analysis, Not only can maintain and reinforce to provide the basis for the bridge, and but also have the certain meaning to the bridge Mechanism research of enduring function problem. Currently, the main method of the domestic and international bridge examination is the lotus of the bridge to carry to experiment.The text carries on the mechanism analysis from the influence main factor of the bridge durable function, and examine to the Hong Tu big bridge on the spot, Makes the appraisal to the Hong Tu bridge state, This can maintain and reinforce to provide the basis for it.The textual research contents are as follows with main conclusion: (1)Carry on the external appearance examination, to Hong Tu big bridge, the concrete strength, the concrect density examination and the carbonization test, the fixed lotus carries to transform to examine and holds still the lotus to carry with variety the lotus carry experiment.(2)Checking and measuring result indicate that the vertical direction of the main beam keeps the direction crack and shears to slice the crack to open the exhibition intensively.(3)The concrete strength predicts outcome to be worth for the 25.2MPa, basically...