The reasonable choice of material, proper solution of thermal expansion problem with tube sheet stress analysis and reasonable structure design must be considerable in the design of tube sheet type methanol synthesis converter.

An theoretic method to calculate roof stress of coal floor;

This paper gives analytic solution fitted to roof stress of coal floor, using analysis method of limitless board of the banding by the complex function in elasticity.

Experimental study on spalling of concrete of prestressed slabs in fire;