A New Dynamic Direct Shear Testing Device on Rock Joints

A New Dynamic Direct Shear Testing Device on Rock Joints
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新型岩石节理动态直剪试验装置

DOI:
10.1007/s00603-020-02175-3
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发表时间:
2020-07
影响因子:
6.2
通讯作者:
Giovanni Barla
Giovanni Barla
中科院分区:
工程技术2区
文献类型:
--
作者:
Shengwen Qi;Bowen Zheng;Faquan Wu;Xiaolin Huang;Songfeng Guo;Zhifa Zhan;Yu Zou;Giovanni Barla

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岩体中广泛存在不连续面,即节理、层面、接触面和断层(ISRM 2007)。这些结构面的抗剪强度评估对于评价岩石结构的稳定性非常重要,因此在这方面进行了大量研究(即Patton 1966;巴顿1973;巴顿和Choubey 1977; Grasselli和Egger 2003; Guo和Qi 2015; Zheng和Qi 2016)。除了静态剪切载荷外,还需要考虑动态剪切载荷,例如地震波载荷,这些载荷是快速的循环载荷(即Li等人,2011,2014)。动态循环剪切下的不连续面剪切强度预计会逐渐降低(即Crawford和Curran 1981)。因此,在静载荷下稳定的岩石结构可能会沿不连续面移动或沿着,在强震期间可能会发生同震滑坡或其他不稳定性(即,Qi等人,2010,2011,2015)。因此,应适当研究动态循环剪切下不连续面的剪切行为(Dang等人,2016; Fathi等人,2016)。
Discontinuities, ie, joints, bedding planes, contacts and faults (ISRM 2007), are widely developed in rock masses. The assessment of the shear strength of these discontinuities is very important for evaluating the stability of rock structures, so lots of researches have been carried out on this aspect (ie, Patton 1966; Barton 1973; Barton and Choubey 1977; Grasselli and Egger 2003; Guo and Qi 2015; Zheng and Qi 2016). In addition to static shear loads, also dynamic shear loads, eg, seismic wave loads, which are rapid and cyclic loads, need to be considered (ie, Li et al. 2011, 2014).The shear strength of discontinuities under dynamic cyclic shearing is expected to decrease gradually (ie, Crawford and Curran 1981). Therefore, a rock structure which is stable under static loads may move or slide along the discontinuities and co-seismic landslides or other instabilities may occur during strong earthquakes (ie, Qi et al. 2010, 2011, 2015). Hence, the shear behavior of discontinuities under dynamic cyclic shearing should be properly investigated (Dang et al. 2016; Fathi et al. 2016).
DOI: 10.4028/www.scientific.net/kem.326-328.1709
发表时间: 2006-12
期刊: Key Engineering Materials
影响因子: --
作者:
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DOI: 10.1016/s1365-1609(02)00101-6
发表时间: 2003-01-01
影响因子: 7.2
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发表时间: 2016-09
影响因子: 3.1
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DOI: 10.1016/j.ijrmms.2016.01.009
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DOI: 10.5120/5731-7805
发表时间: 2012-03
期刊: International Journal of Computer Applications
影响因子: --
作者:
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通讯作者: Krishna Kant Singh;Kirat Pal;Madhav J. Nigam