Characteristics of MSWI fly ash leachate of the column-like leaching test;

Based on the equation for estimation of bubble sizes in a freedom bubbling fluidized-bed studied by former researchers, the influence of vertical inner structures of the bed on the bubble sizes was taken into account and a concept of “equivalent column” was proposed.

The merit and the limitation of ETABS and PUSH program are also pointed out,the method of equivalent columns taking the place of walls in ETABS is made further investigated on the basis of document 2.

The new method of the static elasto-plastic analysis (Pushover analysis) is reviewed for structures with shear wall (tube structure),in which the shearwall is replaced by equivalent column based on the equivalent principal of the inelastic response and internal forces between the shearwall and equivalent column.

Through the test of two concrete frames under vertical load and nonlinear finite programme analysis,the performances of strong beam with weak column and equal strength column and beam are studied,such as ultimate load,deflection,displacement ductility,redistribution of internal force.