Experimental evaluation of longitudinal splitting of bamboo flexural components
Experimental evaluation of longitudinal splitting of bamboo flexural components
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DOI：
10.1680/jstbu.16.00072
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发表时间：
2017-03
期刊：
影响因子：
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通讯作者：
M. J. Richard;Jennifer Gottron;K. Harries;K. Ghavami
中科院分区：
文献类型：
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作者：
M. J. Richard;Jennifer Gottron;K. Harries;K. Ghavami
在建筑应用中使用竹材时，竹材的劈裂或纵向剪切破坏是一种关键的极限状态。理解和量化行为必须通过标准化的测试方法，以便国际上采用才能成功地应用于建筑实践。目前的测试程序只能确定由于劈裂失效而产生的有效抗弯强度。本研究通过一些标准和改进的试验方法对毛竹和竹材弯曲试件的纵向剪切破坏进行了研究。特别是，论文提出了对“标准”竹杆弯曲试验的修改，旨在更好地反映实际的剪切主导行为。有缺口的样本被用来更好地建立模式I和模式II行为之间的关系。试验结果说明了弯曲试验产生的I型和II型应力之间的显著交互作用及其相关失效。
Splitting or longitudinal shear failures in full-culm bamboo are a critical limit state when using the material for construction applications. Understanding and quantifying the behaviour must be through standardised test methods for international adoption into building practices to be successful. Current testing procedures only determine an effective flexural strength due to splitting failures. The present study investigates longitudinal shear failure in full-culm Phyllostachys pubescens (Moso) and Bambusa stenostachya (Tre Gai) bamboo flexural specimens through a number of standard and modified test methods. In particular, the paper proposes modifications to ‘standard’ culm flexural tests intended to better capture actual shear-dominated behaviour. Notched specimens were used to better establish relationships between mode I and mode II behaviours. The test results illustrate the significant degree of interaction between mode I and mode II stresses resulting from flexural tests and their associated failur...