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首页> 外文期刊>Bulletin of earthquake engineering >Full-scale cyclic test of a Japanese post and beam wood shearwall assembly
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Full-scale cyclic test of a Japanese post and beam wood shearwall assembly

机译：日本柱子和梁木制剪切墙组件的全面循环试验

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This paper describes the full-scale test program of a code-conforming Post and Beam shearwall system conducted in a curtain wall test facility. The two-story test specimen is taken from a slice of index full-scale test structure to represent the first-mode dominant response properties. The design of the full-scale index building was carried out following the code requirements of wood buildings classified equal to or higher than the Grade-2 index buildings regarding the seismic grading scheme. The test program was not only aimed to provide an in-depth understanding of the seismic response characteristics of the shear wall assembly under cyclic deterioration but also contributed to developing reliable numerical models during the preliminary design phase of the 2019 full-scale shake table test program of the Tokyo Metropolitan Earthquake Resiliency Project. Moreover, the effectiveness of the instrumentation scheme to trace the distinct damage states and identification of the failure mechanism was examined using the advantages of full-scale testing. A novel cyclic loading test protocol was systematically applied to the shearwall assembly to capture the progressive damage starting from the initiation of elastic deformations to the near-collapse limit state. Shearwall assembly was tested until reaching the 1/21 rad interstory drift angle to determine the failure criterion of the shear wall assembly. Applied test procedure using a curtain wall test rig is useful and cost-effective for testing two different forms of systems to establish the damage pattern and deterioration characteristics of structural systems rather than only performing conventional tests for a particular structural system. At the end of the test sequence, gypsum wallboards were fallen apart due to the detachment of nails and out-of-plane buckling failure of diagonally brace. A numerical model incorporating negative stiffness branch in the backbone curve and all significant modes of cyclic deterioration of the P&B shearwall assembly is generated based on the energy-based hysteretic model. The generated numerical model and the test results were found compatible as a result of sensitivity analyses.
机译：本文介绍了在幕墙测试设施中进行的代码符合柱和光束剪切墙系统的全尺度测试程序。两层阶层试样从一片索引全尺度测试结构中取出，以表示第一模式的主导响应属性。遵循关于归类于或高于关于地震分级方案的2级指标建筑的木材建筑物的代码要求进行全尺寸指标建筑的设计。测试程序不仅旨在了解循环劣化下剪力墙组件的地震反应特性的深入理解，而且还有助于在2019年全尺寸摇动台测试程序的初步设计阶段开发可靠的数值模型东京大都市地震弹性项目。此外，采用全规模检测的优点，研究了仪表方案对追踪不同损伤状态和识别失效机理的验证的有效性。系统地施加了一种新的循环加载试验方案，以捕获从弹性变形开始到近乎塌陷极限状态的开始捕获渐进损伤。测试剪切墙组件直到达到1/21 RAT型壁炉漂移角，以确定剪力壁组件的故障标准。使用窗帘壁试验台的应用测试程序是有用的，并且对于测试两种不同形式的系统来建立结构系统的损伤模式和劣化特性，而不是仅对特定结构系统执行常规测试的有用和成本有效。在测试序列结束时，由于钉子的分离和对角线支撑的平面异常屈曲失败，石膏墙板分开。基于基于能量的滞后模型，产生一种在骨干曲线中掺杂负刚度分支的数值模型以及P＆B Shearwall组件的所有显着模式的循环劣化。由于灵敏度分析，发现所产生的数值模型和测试结果兼容。

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