To explore the nonlinear mechanic behaviors of pre-stressed greatly cross structures with CFRP cables under different conditions and provide some reference to the control method of corresponding mechanic behaviors and the practice of corresponding structures,the characters of CFRP cables in static parameters such as equivalent stiffness,vertical component of forces,sag effects were analyzed.

Swelling characteristics and hydraulic properties of GCLs under vertical stress;

The vertical stress distribution and shear studs force have been analyzed in this paper based on the supposition of different shear stud flexibility.

Calculation method of foundation pressure of rigid foundation is used to calculate the change of vertical force on pile top induced by the error of a pile position.

On the basis of experiments already finished,the paper analyzes the working period and factors of strength of reinforced concrete brackets of small sheer span under vertical static load and it also points out the calculation equation of crack and strength of the bracket according to the destructive form,experimental curve and data.