Thermal Analysis of Reinforced Concrete Section Exposed to Fire
Temperature analysis, fire resistance time, reinforced concrete structure, fire
Abstract
This article proposes the simplified two-dimensional non-linear transient thermal analysis for temperature distribution in the reinforced concrete structure. The finite element method (FEM) is performed using the ANSYS software. In the model, the thermal properties of concrete such as thermal conductivity, specific heat, and density are used according to EN-1992-1-2. The purpose of the research is to investigate the fire resistance time of reinforced concrete structures exposed to the ISO834 standard fire curve under the temperature criteria. The beam, slab, and column with have the concrete covering according to the Thai Building Control Act (B.E. 2549) are considered.Based on the FEM results, the obtained temperature distributions are in agreement with the past experimental results. And, the concrete covering in accordance with the Thai Building Control Actprovides the fire resistance rate consistent with the value of fire resistance time proposed by the Thai Building Control Act.
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บทความทั้งหมดที่ได้รับการคัดเลือกให้นำเสนอผลงานในการประชุมวิชาการวิศวกรรมโยธาแห่งชาติ ครั้งที่ 25 นี้ เป็นลิขสิทธิ์ของ วิศวกรรมสถานแห่งประเทศไทย ในพระบรมราชูปถัมภ์
