摘要
运用FLAC3D数值软件建立了某公路等倾顺层岩质边坡的"层-面-层"分析模型,并通过监测桩提取代表点的水平应力和位移,进而模拟边坡的稳定性,获得相应滑面。在推测滑面基础上,反算出滑面的参数,进而评价潜在滑体的稳定性。根据潜在滑体的稳定性及预算推力,对坡体作了锚固设计,并通过理正岩土软件验证了设计的可靠性。案例边坡开挖后,后缘张拉裂缝的位置与推测滑面的后缘位置一致,锚固方案实施后坡体稳定。
Tthe layer-surface-layer analysis model of the bedding rock equal inclination slope is established by using FLAC3D numerical software and the horizontal stress and displacement of representative points are extracted through monitoring piles so as to simulate the stability of the slope and get the corresponding sliding surface.On the basis of speculating sliding surface,the parameters of the sliding surface are calculated and the stability of the potential sliding body is evaluated.According to the stability and landslide thrust of potential sliding body,It s designed the anchorage of the slope and the reliability of the design is verified by Lizheng geotechnical software.After the excavation of the case slope,the position of the tensile crack in the rear edge is consistent with the rear edge position of the speculated slide surface and the slope body is stabilized by the design implement of the anchorage scheme in this paper.
作者
李昌龙
LI Changlong(Guizhou Transportation Planning Survey&Design Academe Co.,Ltd.,Guiyang 550081,China)
出处
《路基工程》
2018年第A01期25-28,43,共5页
Subgrade Engineering
关键词
顺层岩质边坡
层-面-层
稳定性
锚固设计
可靠性
bedding rock slope
layer-surface-layer
stability
anchorage design
reliability
