单层殿堂式古建筑木结构动力分析模型

殿堂式古建筑木结构由于其独特的构造特点而具有与现代建筑结构不同的抗震性能，现有的结构动力分析模型对于古建筑木结构不再适用。基于其水平地震作用下的受力性能及动力破坏形态，给出了关键构件的简化分析模型，将柱架简化为“摇摆柱”，将枓栱铺作层简化为“剪弯杆”；根据简化分析模型及整体结构质量分布情况，提出了单层殿堂式古建筑木结构的两质点“摇摆-剪弯”动力分析模型；结合构件试验以及动力学理论推导得到了动力分析模型不同受力状态下各参数的计算方法及适用范围，并与振动台试验结果进行对比。结果表明，提出的动力分析模型可以较好地反映单层殿堂式古建筑木结构在水平地震作用下的动力反应。

Dynamic analysis model of monolayer hall-style ancient timber structure

The monolayer hall-style ancient timber structure,due to its unique construction features,the seismic behavior is different from modern buildings.The existing dynamic analysis model of structure is no longer suitable for ancient timber structure.Based on its mechanical behavior and dynamic failure mode under the horizontal earthquake action,the equivalent models of the key members of which the column frame was simplified as ’rocking column’ and the bucket arches was simplified as ’shear-bending member’ were put forward.According to the equivalent models and mass distribution of the whole structure,’rocking-shear-bending’ dynamic analysis model for monolayer hall-style ancient timber structure was proposed,the analysis method and application range of each parameter based on component test and theoretical derivation of dynamics were obtained.The results of analysis model were compared with experimental results.It is found that the test results agree with analysis results,which shows that the proposed dynamic analysis model can reflect the dynamic response of the monolayer hall-style ancient timber structure under the horizontal seismic action.