Abstract：So far, the reliability analysis of bolted connections is mainly aiming at the connection with a single bolt. However, all of the bolted connections in actual projects are composed with more than one bolt, which reliability analysis is few or none. For this issue, this paper established a model of its reliability analysis of bending and bearing capacity which is based on the code for design of timber structures (GB5005-2003) in China, and the corresponding analysis program is compiled, with applying the improved JC method which takes the corresponding influence of mutual random variables into account. According to numerous data analysis, it is presented that reliability index of bending and bearing capacity of bolted connections. When ,the reliability index of multi-bolts connections and a single bolt connection is the same, which overall average value and coefficient of variation are 4.0023 and 0.0968; While , the overall average value and coefficient of variation of multi-bolts connections are 5.8681 and 0.1230, respectively; And when linearly changes among the range of this paper, the overall average value and coefficient of variation of multi-bolts connections are 4.15941 and 0.0893, respectively. The results presented in this paper will contribute to modify the current code for design of timber structures in China.
