Method for detecting strength of reinforcing steel bar after general fire in simulated open space

Abstract

The invention discloses a method for detecting the strength of reinforcing steel bars after a general fire disaster in a simulated open space. According to the invention, the electromagnetic induction heat treatment technology is adopted for heating, the condition of natural cooling after combustion in a fire scene under a relatively open condition is simulated, the heating speed is high, and the fire scene environment under the open condition can be accurately simulated; the change of the reinforcing steel bar can be close to a real fire scene, the ultimate strength of the reinforcing steel bar corresponding to different fire scene temperatures can be accurately calculated by the constructed formula, and theoretical support is provided for association of the reinforcing steel bar structure after the fire to building performance.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a method for detecting the strength of steel bars after simulating a general fire in an open space. Background technique [0002] After a fire occurs in a building, there is an open building. This open building is an isolated building. After the fire, the heat dissipates quickly. After the building is on fire, the cooling speed is faster. , the maximum elongation and ultimate strength of steel bars determine the seismic performance of buildings, such as ductility and energy consumption. [0003] The inventor of the present application has previously conducted relevant research on the situation of buildings being extinguished in the process of fire, and has applied for relevant patents. However, in the later scientific research, it was found that many fires are often difficult to be extinguished in time. Moreover, according to the difference in building structure, it is v...

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Problems solved by technology

However, it was found in later scientific research that many fires are often difficult to extinguish in time, and, according to the differences in building structures, it is very likely that the scene will be in a closed state or an open environment after a fire occurs, which brings great harm to the scene. completely different impact

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