Damage assessment,repair and field test of steel lattice shell after fire |
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| Authors: | Tao Sun Kejian Ma Zhihua Chen Yue Yin Jie Liu |
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| Institution: | (School of Civil Engineering, Tianjin University, Tianjin 300072, China) |
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| Abstract: | A real case of a steel lattice shell suffering a fire was studied. Based on the theory of field modeling, fire dynamic simulator
(FDS) was used to identify the temperature field. The damage mechanism of the structure was determined by FEM analysis. After
damage assessment, the shell was repaired with the pipe-encasement method. Finally, field test was employed to check the capacity
of the structure after repair. The numerical study results indicate that the damage assessment agrees well with field inspection,
verifying the accuracy of fire numerical simulation and FEM analysis. The field test results prove that the pipe-encasement
method is secure and reasonable, and the repaired shell is safe. |
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| Keywords: | steel lattice shell fire temperature field damage assessment repair field test |
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