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生态复合锚杆在横向弯剪作用下的变形特征与破坏模式等方面缺乏科学认识,还未从试验、理论等方面进行过机理性研究。首先介绍了生态复合锚杆模型试验的制作与试验过程,然后通过对试验数据进行分析,揭示横向弯剪作用下生态复合锚杆竖向变形量、轴向应力、弯矩、界面剪应力等的演化规律与特征,最后结合本次试验研究成果对后续试验方案的优化提出建议。结果表明:生态复合锚杆的轴向应力、弯矩、剪应力均在剪切面附近出现峰值集中现象,且数值向远离剪切面减小非常迅速;生态复合锚杆的轴向应力、弯矩、剪应力随荷载的增大而增大主要发生在弹性变形阶段;生态复合锚杆的拉拔荷载主要由铝管及铝管复合材料界面来承受,并且可以预见其抗弯强度在其进入塑性变形阶段后并无明显增长。 相似文献
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《Geoforum》2016
This article is concerned with the practice of Knowledge Exchange (KE) within the creative economy. Drawing on material collected as part of an ethnographic study of a small creative business support agency – Cultural Enterprise Office – based in Glasgow, Scotland, the article argues for a nuanced consideration of the complexities of doing KE in the creative economy. The study in question was titled ‘Supporting Creative Business’ and was funded by the Arts and Humanities Research Council under its Creative Economy Knowledge Exchange programme. This article describes the practice of KE, and the role that it might play as a ‘pathway to impact’. I explore the often-mundane activities that constitute KE ‘on the ground’, and argue for further attention to be paid to what I call ‘informal KE’. This article contributes directly to ongoing debates in geography about the effect that the impact agenda is having on academic practice. More specifically, the article examines the role of academics vis-à-vis consultants and other knowledge producers within the creative economy. 相似文献
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