既有网格结构构件重要性实用判定方法  

A Practical Method for Evaluation of Member Importances of Existing Spatial Structures

作　　者：罗立胜[1] 罗永峰[2] 

机构地区：[1]海南大学土木工程系,海口570228 [2]同济大学建筑工程系,上海200092

出　　处：《结构工程师》2017年第2期109-114,共6页Structural Engineers

基　　金：住房和城乡建设部<高耸与复杂钢结构检测与鉴定技术标准>规范编制研究项目(GB090112022)

摘　　要：从结构刚度和构件抵抗外荷载的角度出发,提出了一种适用于既有网格结构构件重要性判定的计算方法。通过理论公式推导,建立了构件重要性系数和构件重要性判定系数的简化计算方法,给出了根据构件重要性系数和构件重要性判定系数判断结构是否为静定结构的推论。最后,以一个平面桁架和一个空间网架结构为算例,验证了既有网格结构构件重要性判定方法的实用性和可靠性。With structural stiffness and the resistances of structural members, a method which can be used to judge member importances of an existing frame structure in practical engineering is proposed in this paper. Based on the formulae derivation and theoretical analysis, the calculation formula for member importance coefficient and member importance determination coefficient are established. On the basis of the member importance coefficient and member importance determination coefficient, the inference which can be used to judge whether the structure is statically determinate is given. At last, taking a plane truss and a space truss as examples, the feasibility and the effectiveness of the method is verified.

关 键 词：既有网格结构 构件重要性 构件重要性判定系数 

分 类 号：TU317[建筑科学—结构工程]