The linear correlation of random variables is considered and the formulas for computing the checking point and the sensitivity coefficient of random variables are presented.

3 respectively,and the corresponding factors of frequent value and quasi-permanent value of live loads based on JCSS model code with JC method were suggested.

Based on JC method,the authors programmed reliability degree analysis program of overturning stability of reinforced soil of retaining wall.

Combining recursive stochastic finite element method with JC method,the paper presents a new method for calculating structural reliability indices.

,the checking point method(JC method) was introduced to compute the two failure modes respectively,and two corresponding reliability i.

With balance equation of transfer coefficient method that widely used in domestic,applying checking point method recommended by JCSS,establish probability analysis model for stability of slope,individually analyze reliability and destroy probability of certain slope engineering basing on random field model and random variance model.

Based on the theory of bridge crossing scour,the reliability calculation model is established with checking point method,and the model is tested by the sample bridge crossing.

The paper adopted a relative precision method of probability analysis of slope stability-design point method,and compared to traditional safety coefficient assessment.

This paper calculates the reliability of engineering structure by using the optimization toolbox of Genetic algorithm which is compiled by Matlab program,and gives the designcheck point.