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从事件的追踪分析出发，用分支－界限法对桁架系统进行了可靠性分析，分析过程直观、明了，适合对实际工程中的桁架结构进行可靠性分析．
Based on the tracing analysis of the incident, the truss system is analyzed by the branch-bound method. The analysis process is intuitive and clear, which is suitable for the reliability analysis of the truss structure in practical engineering.