Safety issues caused by stack effect in super high-rise buildings

In view of the super high-rise buildings in the cold region, analyses the principle and influencing factors of stack effect. Points out that the thermal pressure and the stack effect are not the same concept. The actual effect of the stack effect depends on the thermal pressure and air tightness of the envelopes and internal partitions of the building. Expounds the safety issues resulted in by the stack effect. Analyses the actual effect of increasing the air tightness of building envelope and inside partitions on reducing the risk of the stack effect. Considers that the easiest and the most reliable way of controlling the stack effect is to strengthen the horizontal and vertical partitions in buildings from building design. So that the thermal pressure is divided gradually by internal partitions and consumed by the internal resistance.