【摘要】 根据正交胶合木(cross-laminated timber,简称CLT)结构的节点和墙体试验数据校核了有限元模拟的滞回曲线,建立了CLT结构节点和墙体有限元模型。采用规范推荐的基于承栽力的设计方法分别设计了一幢三层和一幢六层CLT结构,并采用简化方法建立了该结构整体有限元模型。选取41条双向水平地震波,根据罕遇地震、设防地震、多遇地震的设计反应谱将所选地震波调幅至分别代表大震、中震、小震的三组地震波,对结构进行增量动力分析(IDA)。最后根据层间位移角的IDA曲线并结合可靠度要求,计算出罕遇地震、设防地震、多遇地震下多层CLT剪力墙结构的位移角限值。更多还原

【Abstract】 The hysteresis curves of the finite element method(FEM) simulation results are calibrated with the test results of the cross-laminated timber(CLT) connections and walls.A 3-story and a 6-story CLT buildings are designed according to the force-based design method recommended in the standards and a simplified FEM model of the whole structures developed finally for each of the building.A suite of 41 biaxial earthquake ground motions are selected and scaled to three ensembles of ground motions representing rare medium and frequent earthquake ground motions respectively according to the design spectrum of each ensemble.Then incremental dynamic analysis(IDA) is applied to analyze the CLT buildings aforementioned.According to the IDA curves of the inter-story drifts and the definition in reliability standard,the limit inter-story drifts for rare,medium and frequent earthquake ground motions are defined respectively.更多还原