Study on the Fire Resistance of Axially Restrained H-Shaped Steel Beams Under Real Fire
Source abstract
Abstract
The fire resistance performance of steel beams is of utmost importance to the fire safety of building structures and personnel evacuation. To address the deviation in the assumption of uniform temperature distribution in traditional studies, this study conducted multiple simulation tests. It was found that when the size of the vent was reduced by 50%, the difference in the heating rate in the early stage of the fire was 30% to 50%. Increasing the load ratio from 0.2 to 0.8 can significantly reduce the critical temperature of the steel beam by 15% to 20%, and the corresponding critical temperature is reduced from 670 °C to 565 °C. Based on parametric analysis, a simplified evaluation model of critical temperature for Q460 high-strength steel beams is proposed. The calculation error of the model is less than 5%, which provides a theoretical basis for the whole process of fire protection design. The research achievements break through the limitations of traditional methods and offer innovative approaches to predicting the fire resistance performance of steel beams and their optimized design.
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Research context
OpenAlex topics: Fire effects on concrete materials · Fire dynamics and safety research · Structural Load-Bearing Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering and Architecture, University of Jinan, Jinan 250024, China
School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China
Binzhou Water Conservancy Resources Development and Construction Center, Binzhou 256600, China
Funding
handong Higher Education Institutions Young Creative Talents Science and Technology Support Program
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