The Study Of The Detection Assessment For Concrete After Fire

Fire is a major disaster threatens the public safety, every year to brought greatdamage to the country and people, we need to understand the structure bearingcapacity changes in the fire, after the fire, and the fire of the effect of high temperatureon structural reliability. Doing so can provide the theoretical basis for fire resistantdesign of buildings, on the other hand, can provide the data and theoretical guidancenecessary reinforcement for post disaster building detection.At present, research departments at home and abroad by a lot of experimental andtheoretical analysis, obtained a series of achievements, this paper summarized theseresults. And pointed out that the inspection of building structure after fire, fire damagedetection technology and complexity does not adapt, especially in the quantitativeanalysis of the depth of burn, residual bearing capacity of component exposed to fire isnot enough, the detection technology of concrete member after fire are studiedsystematically and puts forward the testing procedures and assessment of mature:(1) The fire, and the fire of reinforced concrete structure after fire damageprinciple, points out the component exposed to fire detection, assessment, and thedomestic and foreign fire research are summarized. Introduces the principle ofdetection methods currently used by fire after fire member.(2) Based on the existing research results on the detection, summarizes somemethods and means which is widely used, such as visual method, rebound method,ultrasonic method, core drilling, and analyzes the advantages and disadvantages andthe scope of their respective. At the same time, also on the bearing capacity of concrete member after fire were investigated, summarized the residual bearing capacity ofmember stress calculation formula， compared the advantages and disadvantages ofvarious methods.(3) Study of various detection methods advantages and disadvantages, a briefsummary of the existing fire detection, fire component assessment method,summarizes the procedures and inspection requirements(4)For a shopping mall fire fire structure were detected, assessment by theabove research, the detection, assessment of the conclusions, and put forwardreasonable suggestions according to the conclusion.