Temperature Field Analysis of SRC Column to SRC Beam Joints Subjected to Heating and Cooling Fire

SONG Tianyi; HAN Linhai; YU Hongxia

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Temperature Field Analysis of SRC Column to SRC Beam Joints Subjected to Heating and Cooling Fire

SONG Tianyi 1 #,HAN Linhai 2 *,YU Hongxia 2

1.Department of Civil Engineering, Tsinghua University

2.Department of Civil Engineering, Tsinghua University, Beijing, 100084, China

*Correspondence author

#Submitted by

Subject:

Funding: Specialized Research Fund for the Doctoral Program of Higher Education （No.No. 20090002110043）, Program for Changjiang Scholars and Innovative Research Team in University （No.No. IRT00736）

Opened online:14 March 2011

Accepted by: none

Citation: SONG Tianyi,HAN Linhai,YU Hongxia.Temperature Field Analysis of SRC Column to SRC Beam Joints Subjected to Heating and Cooling Fire[OL]. [14 March 2011] http://en.paper.edu.cn/en_releasepaper/content/4413268

Experiments were performed on steel reinforced concrete (SRC) column to SRC beam joints subjected to fire scenarios including heating and cooling phases, and temperatures in the junction and areas certain distance away from the junction were measured during both the heating and cooling phases. The experiments tested the influence of heating time on the temperature distributions at various sections of the specimens. A three-dimensional finite element analysis (FEA) model was developed to calculate the temperature field of the SRC column to SRC beam joints. The predicted temperatures show good comparison with the test results. Based on the finite element analysis, the differences of the temperature distributions in the joint zone and the non-joint zone are analyzed and its influence to the structural fire safety design is illustrated. One important conclusion from this study is the necessity to include cooling phase in structural safety design because it is in the cooling phase of fire that the majority of joint materials reached their peak temperature.

Keywords:steel reinforced concrete (SRC);joint;temperature;FEA model

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