木结构传统榫卯与新型榫卯抗震性能试验研究

Experimental Study on Earthquake Resistance of Conventional and New-Style Mortise and Tenon Joint on Timber Structure

为研究梁柱式木结构在应用传统和新型榫卯形式作为连接节点的抗震性能,对2个3层单跨梁柱式木框架尺缩模型进行了小振动台试验,其中传统榫卯节点为对照模型,新型榫卯节点为改良模型。根据试验现象和数据分析,探讨了木结构应用新型榫卯作为连接节点装配式生产的可行性,对比了传统和新型榫卯模型的自振频率、最大位移。结果表明,新型榫卯模型的在不同频率、不同振幅的振动作用下,最大位移均较传统榫卯模型小,由此得出新型榫卯模型的抗震性能较传统榫卯模型更佳的结论。

In order to study the earthquake resistance of timber post and beam structures when the conventional and newstyle mortise and tenon joint are applied,2 contraction size models are tested on small vibrostand,including a conventional mortise and tenon model as control model and a new-style one as study model.Based on the experimental phenomena and test results,feasibility of the fabricated timber structure with new-style mortise and tenon joint was discussed,and the seismic performances were compared.Results showed that the displacement of the new one was less than the conventional one no matter on which condition which shown that the new one had better earthquake resistance.