防灾减灾工程学报2018，Vol.38Issue(1)：65-71,7.DOI:10.13409/j.cnki.jdpme.2018.01.009
多滑动面滑坡变形破坏机理的振动台试验研究
Shaking Table Test Study on Deformation and Failure Mechanism of Landslide wtih Multiple Slip Surface
摘要
Abstract
At present,there is a lack of research on the deformation and failure mechanism of earthquake-induced landslides with multiple slip surfaces.In this paper,the seventh landslide of 0 # landslide group along Yushu Airport Road is regarded as the test prototype,and the seismic wave collected in the "4 · 14" Yushu earthquake is selected as the basic dynamic load.The gradual failure characteristics of multiple slip surfaces under different load directions are studied using large-scale shaking table tests.The test results show that the amplification effect of the slope with multiple slip surfaces on the peak acceleration of seismic wave is more obvious for a higher elevation.Under the action of earthquake,the deformation and failure of the landslide with multiple slip surfaces gradually evolve from shallow to deep slip surfaces.Finally,the deformation and failure of the landslide is along the shallow parts of the sliding mass.The failure modes are different between earthquake-induced landslides with multiple slip surfaces and those with single slip surface.For the former,when there are localized sliding deformation in the slope,overall sliding does not necessarily emerge.Instead,the deformation of the landslide with multiple slip surfaces shows that the shallow sliding surfaces act as attachment,developing to the deeper sliding mass,which reflects the failure characteristics of continuous traction.The results of this experiment reveal the deformation and failure mechanism of landslides with multiple slip surfaces,which can provide useful reference for designing the treatment measures of such landslides.关键词
动力响应/振动台试验/多滑动面/滑坡Key words
dynamic response/shaking table test/multiple slip surfaces/landslide分类
天文与地球科学引用本文复制引用
艾挥,吴红刚,冯文强,陈小云..多滑动面滑坡变形破坏机理的振动台试验研究[J].防灾减灾工程学报,2018,38(1):65-71,7.基金项目
甘肃省自然科学基金项目(145RJZA068)、青海省交通建设科研项目(2010-03)、云南省交通建设科研项目(201712)资助 （145RJZA068）
