The paper introduces the calculation of the main truss node plates,illustrates the calculation principle for the tear-up stress of the plate,undertakes the calculation analysis of the general and integral tear-up for the connection components,and points out the integral tear-up must be considered and calculated in the composite member.%介绍了主桁节点板的验算内容，阐述了节点板的撕破应力的计算原理，结合计算实例，对连接构件的一般撕裂和整体撕裂进行了验算分析，指出在对拼式杆件连接中，整体撕破是必须考虑和检算的。
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