Fire Damage Concrete Beam Bridge Structure Reinforcement Technology

The concrete structure is extensively used in bridges, traffic irrigation projects, industrial and civil buildings, just because it is of high-strength, durability, earthquake-resistance capability. However, owing to the damage, aging, low quality and even the Fire, earthquake etc, appeared during the using process, The concrete structure was destroyed seriously several, especially after the high temperature of fire, The nature of structure material suffered a lot, and it led to the damage in bearing capacity, distortion, durability, earthquake-resistance capability.Reinforced concrete hollow slab of the Hean Highway got 11 downlink of the third inter-plate girder serious injury, just because of the flame scavenging debris from under the bridge. Burned crisp as a result of the concrete, burst, spalling, cracking, resulting in reduced strength, reduced stiffness components, reduced bridge the quality and service life are to a certain extent.This paper conducts the following research work within the practical engineering combined with the basic theory of the use of concrete structure, fire damage theory, the structure of test technology, reinforced concrete construction control theory.1,After the explanations on the importance of maintenance and reinforced concrete structures after the fire. The fire detection technologies, as well as methods of reinforcement maintenance studies are reviewed, relevant to research at home and abroad.2,With the relevant norms, we make an exploration and comparative analysis about the composite fiber sheet reinforced the rationale for the computer, providing the basis for calculation and analysis.3,With an involution of a prestressed concrete highway bridge hollow Pangyo analysis of fire damage, and thus strengthening the calculation corresponding analysis about the implementation of the program reinforcement. The reinforcement after the load test showed that the reinforcement effect is of good structure.Finally, summing up the work of this article, and looking forward to the further study work in future.