【摘要】 以江南典型宋元木构建筑(宁波保国寺大殿)和江南典型明清木构建筑(甘熙故居津逮楼)为研究对象,基于能量方法,采用改变后结构整体应变能的单位体积改变率作为构件重要性的评价指标,运用有限元软件ANSYS开发基于生死单元法和改变弹性模量法的构件重要性评价程序.通过对保国寺大殿和津逮楼的单榀框架和整体框架在竖向荷载作用下的结构构件重要性的计算分析,得到构件的重要性系数和重要性排序,并指出这两个典型构架体系的江南传统木构建筑的关键构件.结果表明:改变弹性模量法更适用于江南传统木构建筑结构构件的重要性分析.更多还原

【Abstract】 A typical traditional timber building(Baoguo Temple in Ningbo)built in the Song and Yuan dynasties and a typical traditional timber building(Jindai Building in Ganxi′s former residence)built in the Ming and Qing dynasties were taken as the examples,based on energy method,the change of unit volume towards the strain energy of the whole structure after altering component attributes was employed as the component importance evaluation index,the finite element software of ANSYS was used to assess the component importance of these two traditional timber buildings with the birth-death element method and the altering elastic modulus method.Through the component importance analysis of the single frame and the whole frame under the vertical loads,the component importance coefficient and the sorting results of these two traditional timber buildings were obtained,the key components of these two traditional timber buildings were pointed out.The results show that the altering elastic modulus method is more suitable for the calculation and analysis of component importance of traditional timber buildings.更多还原