High-temperature-resistant building steel structure

Abstract

The invention discloses a high-temperature-resistant building steel structure, and relates to the field of buildings. The high-temperature-resistant building steel structure is used for solving the problem that the strength of the steel structure in a fire is reduced. The high-temperature-resistant building steel structure comprises a building section steel with an H-shaped structure or a C-shaped structure; the building section steel is provided with heat pipes for transferring heat along the length direction; a heat-transferring combining surface is arranged between the heat pipes and the building section steel; and the evaporating sections of the heat pipes are positioned indoors, and the condensing sections of the heat pipes are positioned outdoors and are provided with cooling water spraying systems. The high-temperature-resistant building steel structure disclosed by the invention has the advantages that not only can the reduction of the performance of the steel structure be prevented and delayed, but also the damage degree of the building is avoided or reduced, and simultaneously the precious escaping time is obtained for staff in the building.

Description

technical field [0001] The invention relates to the construction field, in particular to a high-temperature-resistant building steel structure. When a fire occurs in a steel structure house, it can prevent or delay the strength of the steel structure of the house from being reduced due to high temperature, resulting in the collapse of the steel structure and endangering people's lives. Background technique [0002] According to the "General Rules for Civil Building Design", buildings higher than 24 meters or more than 10 stories are high-rise buildings. With the development of the economy, a number of buildings higher than 100 meters have emerged. They are called super high-rise buildings, and the public is used to calling them "skyscrapers". High-rise buildings—especially high-rise buildings with strange appearances, are generally steel structures or partially steel structures. [0003] Commonly used building structural steels are Q235, Q345, etc., because the carbon in t...

AI Technical Summary

Problems solved by technology

No matter which method is used, it is to adopt passive protection or change the external environmental conditions to try to solve the high temperature resistance of the steel structure. These two methods cannot fundamentally solve the high temperature resistance of the steel structure, and the second is also limited by the fire extinguishing time. Generally, the fire resistance time limit of steel structures is 2-3 hours. If the fire extinguishing time is too long, the temperature of all insulation materials and the temperature of the steel structure will tend to the limit, the protection ability will be greatly weakened, and the strength of the steel structure will be reduced or the metal will be lost. Strength causes steel structures to collapse

In addition, once a steel structure building catches fire, it cannot be directly extinguished with water. If it is watered during fire fighting, its damage will be more serious.

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