Open AccessStudy on the axial compression performance of partially prefabricated steel concrete columns after fire
Author(s) -
Yong Yang,
Xukun Yao,
Pan Zhou,
Yicong Xue
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/676/1/012077
Subject(s) - precast concrete , structural engineering , materials science , fire performance , compression (physics) , finite element method , reinforced concrete , core (optical fiber) , composite material , fire resistance , engineering
In combination with the advantages of steel reinforced concrete columns, high strength and high performance concrete and precast assembled structures, a new type of partially precast assembled steel reinforced concrete columns (SRHCC) was proposed in this paper. In order to study its post-fire axial compression performance, the finite element analysis software ABAQUS was used to simulate its temperature field under standard fire based on experiments. The results show that the core temperature of the specimen increases with the increase of the thickness of the section steel protective layer and decreases with the increase of the firing time. On this basis, the limit equilibrium theory was used to propose the formula for calculating the residual carrying capacity of SRHCC after fire. The calculated results were close to the test results and tended to be safe.