The key to application of random field theory to reliability analysis is how to combine the reduction function of variance obtained by the random theory with the reliability theory.

The key to application of random field theory to reliability analysis is how to combine the parameters obtained by the random theory,especially the combination of the reduction function of variance with the reliability theory.

The formula of the critical buckling condition has been given out,and the general module of reduction Er has been determined.

Determination of creep reduction factor of geosynthetics by time-temperature superposition;

Creep reduction factor of geosynthetics;

The author introduces two calculation models of the manual hole digging pile wall protection,attempts to use the reduction factor methods considering the spatial effect,verifies the feasibility of the method combined with the concrete the numerical example,which provides the reference for the similar projects.

The Experimental research of discount coefficient of gangue concrete filled steel tubular columns under bias compression on the basis of uniform design;

Fuzzy comparison on the discount coefficient of concrete fatigue strength;

And others compromise, they multiply a discount coefficient by static water pressure as the calculated water pressure acted on the outer boundary line of lining.

The emphases are especially given to: (1)When full-sealing water proofing lining is employed, no reduction coefficient for the water pressure should be considered into account no matter how small the permeability coefficient of the ground is.

The reduction coefficient of SATWE total information,regidity reduction coefficient of linking beam,increment coefficient of beam regidity and so on were generalized.

This paper calculated the reduction coefficient "β" of the soil among piles by the formula from the Technical code for ground treatment of buildings that is used for calculating the bearing capacity of the composite foundation.