计算力学学报2017，Vol.34Issue(6)：732-738,7.DOI:10.7511/jslx201706009
考虑内力分项贡献度的框架构件重要性评价
Component importance evaluation of frame structures considering the contributions of internal forces
摘要
Abstract
A component importance evaluation method for frame structures under horizontal and vertical loads is developed in this paper.The strain energy equation,together with the node-external force relationships of frame components,is first used to calculate the axial forces,shear forces and bending moments of beams and columns.Then component-level partial importance coefficients are defined based on the ratios between the calculated internal forces of components and their resisting forces.The coefficients embody the utilization levels of the resisting forces of components.Subsequently integrated importance coefficients are defined using the combinations of different partial coefficients,which reflect the component contributions to the entire load capacity of a frame structure.Lastly,the feasibility of the developed method is verified against two different frame structures.The analysis results demonstrate that the method can provide quantitative evaluations for the optimal design and the progressive collapse design of frame structures.关键词
框架结构/构件重要性评价/构件内力与抗力/分项重要性系数/综合重要性系数Key words
frame structure/importance evaluation of components/internal and resisting forces of components/partial importance coefficients/integrated importance coefficients分类
建筑与水利引用本文复制引用
张立森,方圣恩..考虑内力分项贡献度的框架构件重要性评价[J].计算力学学报,2017,34(6):732-738,7.基金项目
国家自然科学基金面上项目(51578158) （51578158）
福州大学“旗山学者”奖励支持计划(GXRC-1688)资助项目. （GXRC-1688）
