论文部分内容阅读
基于云南省某类土质公路边坡的开挖工程实例,利用有限差分软件Flac3D对其施工过程进行了数值模拟,围绕开挖对边坡的扰动效应进行了深入详细的研究。通过研究表明:开挖对边坡位移场的扰动较大,特别是第五步开挖对位移场的扰动最大;开挖对边坡应力场的扰动较小;开挖对地震裂缝的扰动明显;由于扰动作用,地震裂缝右侧靠近临空面的地表产生了较多地表裂缝,使坡体整体受到了破坏,这也是边坡存在的主要问题。根据以上分析,提出了削坡减载、调整锚索布置及建排水沟等治理建议。文中类土质边坡作为公路边坡开挖工程的典型案例,其中的研究成果将为以后同类工程的建设提供一些借鉴与参考。
Based on the excavation engineering example of a kind of soil highway slope in Yunnan Province, the construction process of the slope excavation is simulated by using the finite difference software Flac3D. The perturbation effect of the excavation on the slope is studied in detail. The results show that the excavation has a great disturbance to the displacement field of the slope, especially the disturbance to the displacement field is the largest in the fifth step. The disturbance to the stress field of the slope is small when the excavation is carried out. The disturbance to the earthquake crack is obvious Due to the disturbance, more surface cracks were generated on the ground near the temporary ground surface on the right side of the seismic fracture, which caused the entire slope body to be damaged. This is also the main problem existing in the slope. Based on the above analysis, proposed cutting slope loading, adjusting the anchor cable arrangement and construction of drainage ditches and other management recommendations. As a typical case of highway side slope excavation, the research results of this kind of soil slope will provide some references for the construction of similar projects in the future.