According to different fire loads, studies the changing relation between the critical velocity and fire intensity.

Aimed at horizontal tunnel model with the same width and different heights,using CFD technology,influences of environmental temperature,fire heat releasing strength,section shape on critical wind velocity were analyzed.

Experiment and analysis on mechanical properties of reinforced concrete beam after fire;

To solve the problems such as fire resistance design,assessment and repair after fire for centrifuge concrete-filled steel tubular(CCFT) columns,based on analysis on stress-strain relationships of steel and concrete in fire environments and after high temperatures,a finite element model for calculating fire resistance and residual strength of CCFT columns was established.