刚度理论在既有结构改造加固设计中的应用
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（淄博市规划设计研究院，淄博255037）[摘 要]既有结构的改造加固设计必须考虑结构体系的优化，及结构整体刚度、刚度分布和刚度变化的合理把握；组合构件必须考虑既有结构的旧有构件刚度，使计算更加符合实际情况；结构构件的刚度是逐渐退化的，既有结构的设计计算需考虑刚度退化的影响。[关键词] 体系优化;刚度调整;构件刚度;刚度退化中图分类号：TU375.4 文献标识码：A 文章编号：1002-848X(2013)S1-0791-04Application of stiffness theory in the structural reinforcement designGuang Jun( Zibo urban planning design Institute, Zibo 255037,China)Abstract:Optimum design of structural system must be taken into account in the structural reinforcement design,and reasonable grasp the structural whole stiffness, stiffness distribution and stiffness changes. The structure stiffness of the old member must be considered in combined member, which makes the calculation more in line with the actual situation. Structure members’ stiffness is degraded, and should be considered the effect of stiffness degradation in the calculation of structural design.Keywords: system optimization; stiffness adjustment; stiffness of the structural member; stiffness degradation
