Numerical Analysis on Fire Resistance of High-Performance Fire-Resistant and Weathering Steel-Concrete Composite Beams

CHENG Yun; SHI Yongjiu; WANG Wenhao; BAN Huiyong; YU Xianglin

doi:10.13204/j.gyjzG21061614

Volume 52 Issue 2

Feb. 2022

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CHENG Yun, SHI Yongjiu, WANG Wenhao, BAN Huiyong, YU Xianglin. Numerical Analysis on Fire Resistance of High-Performance Fire-Resistant and Weathering Steel-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 67-74. doi: 10.13204/j.gyjzG21061614

Citation:

CHENG Yun, SHI Yongjiu, WANG Wenhao, BAN Huiyong, YU Xianglin. Numerical Analysis on Fire Resistance of High-Performance Fire-Resistant and Weathering Steel-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 67-74. doi: 10.13204/j.gyjzG21061614

Citation:

CHENG Yun, SHI Yongjiu, WANG Wenhao, BAN Huiyong, YU Xianglin. Numerical Analysis on Fire Resistance of High-Performance Fire-Resistant and Weathering Steel-Concrete Composite Beams[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(2): 67-74. doi: 10.13204/j.gyjzG21061614

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Numerical Analysis on Fire Resistance of High-Performance Fire-Resistant and Weathering Steel-Concrete Composite Beams

doi: 10.13204/j.gyjzG21061614

Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China

Received Date: 2021-06-16
Available Online: 2022-06-30
Publish Date: 2022-02-20

Abstract

Abstract

With the development of steel-smelting technology, using fire-resistant and weathering steel and encased profiled steel sheets to promote the fire resistance of composite beams has become a new solution for steel structure fire design. Adopting appropriate thermo-mechanical material properties and calculating strategies, the accuracy and reliability of the numerical model were verified by comparing the results calculated in ABAQUS platform based on the experimental data from fire resistance tests of steel-concrete composite beams. Based on the proposed benchmark model, adopting different material thermal expansion coefficients, load ratios and steel beam sizes, conclusions were drawn that the thermal expansion coefficient, steel beam height, thickness of the composite slab and load ratio had a greater influence on the fire resistance of simply supported fire-resistant and weathering steel-concrete composite beams. By comparing the results calculated by the numerical model with those calculated by the bearing capacity method according to Code for fire safety of steel structures in buildings(GB 51249-2017), a modified bearing capacity method was proposed for the composite beams.
- fire-resistant and weathering steel,
- simply supported steel-concrete composite beam,
- fire resistance,
- designing method

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References(22)

References

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