【摘要】 采用数值模拟方法,研究了故宫太和殿的结构现状特征。考虑榫卯节点、斗拱连接等构造,建立了太和殿有限元模型。对模型进行自重荷载作用下、风荷载作用下的静力分析及8度多遇地震作用下的时程响应分析,获得了太和殿在不同荷载作用下的内力及变形特征。结果表明:在自重及风荷载作用下,太和殿结构的内力、变形均在容许范围内;地震作用下,结构保持稳定状态,且榫卯节点及斗拱构造有利于减震。太和殿的结构现状是安全的。更多还原

【Abstract】 Numerical simulation method was adopted to study the structural situation of Tai-he Palace in the Forbidden City.Its finite element model was built considering constitutions such as tenon-mortise joint,tou-kung( bracket sets) and so on.Static analyses under gravity and wind load were carried out as well as the time-history response analysis under frequently occurred earthquake of 8 degree precautionary intensity,and its internal forces and displacement distributions were obtained. The results show that under gravity and wind load,both internal forces and displacement values of Tai-He Palace are within the permission scopes. Under seismic actions,the structure keeps stable status and constitutions such as tenonmortise joints and tou-kungs are helpful for vibration mitigation. Thus structural situation of Tai-He Palace is safe.更多还原