木框架隔墙在侧向位移作用下的理论与试验评价

Jitendra Bhatta, J. Mulligan, R. Dhakal, T. Sullivan, Hans Gerlich, Frank Kang
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引用次数: 6

摘要

本文确定了刚性木框架隔墙的固有强度/弱点,并量化了双向地震作用下不同损伤阈值的起始漂移。报告了一个多翼木框架隔墙试件的施工和准静态横向循环试验,并详细介绍了新西兰施工实践的典型情况。此外,还将测试的刚性木框架隔墙的循环性能与之前在相同测试装置下测试的包含“部分滑动”连接细节和“地震间隙”的类似隔墙进行了比较。基于实验记录的循环性能测量,对文献中提出/推导的用于预测不同损伤状态的极限强度、初始刚度和漂移能力的理论方程进行了仔细审查,并对一些方程进行了更新,以缓解已发现的可能缺点。然后用实验结果验证了这些理论估计。结果表明,该方程可以合理地预测隔墙的初始刚度和极限抗剪强度,以及对石膏板螺旋损伤和斜向屈曲破坏模式的响应。预测的双线性曲线也可以合理地近似于测试隔墙的骨架曲线。
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Theoretical and experimental evaluation of timber-framed partitions under lateral drift
This paper identifies the inherent strengths/weaknesses of rigid timber-framed partitions and quantifies the onset drifts for different damage thresholds under bi-directional seismic actions. It reports construction and quasi-static lateral cyclic testing of a multi-winged timber-framed partition wall specimen with details typical of New Zealand construction practice. Furthermore, the cyclic performance of the tested rigid timber-framed partition wall is also compared with that of similar partition walls incorporating ‘partly-sliding’ connectiondetails, and ‘seismic gaps’, previously tested under the same test setup. Based on the experimentally recorded cyclic performance measures, theoretical equations proposed/derived in the literature to predict the ultimate strength, initial stiffness, and drift capacity of different damage states are scrutinized, and some equations are updated in order to alleviate identified possible shortcomings. These theoretical estimates are then validated with the experimental results. It is found that the equations can reasonably predict the initial stiffness and ultimate shear strength of the partitions, as well as the onset-driftscorresponding to the screw damage and diagonal buckling failure mode of the plasterboard. The predicted bi-linear curve is also found to approximate the backbone curve of the tested partition wall sensibly.
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来源期刊
CiteScore
2.50
自引率
17.60%
发文量
14
期刊最新文献
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