多级边坡施工效应的模型试验研究
发布时间：2019-02-25 18:38
【摘要】：根据边坡施工后坡体位移的相对变化趋势,给出了边坡开挖松弛区和预压区的明确定义,将开挖松弛区和预压区统称为坡体影响区,并通过大型模型试验模拟了多级边坡的施工过程,提出了影响区重叠效应的概念。若下级边坡的开挖松弛区(或预压区)与上级边坡的预压区发生重叠,那么会对上级边坡重叠区域的岩土体产生松弛(或加固)作用,从而影响该重叠区域支挡结构的受力情况,重叠范围越大影响越大;对于重叠区范围之外的支挡结构,其受力不受影响,影响区重叠效应是支挡结构受力发生变化的根本原因。
[Abstract]:According to the relative variation trend of slope body displacement after slope construction, a clear definition of slope excavation relaxation area and pre-compression area is given, and the excavation relaxation area and pre-pressure area are collectively called slope body influence area. The construction process of multi-stage slope is simulated by large-scale model test, and the concept of overlapping effect of influence zone is put forward. If the excavation relaxation area (or preloading area) of the lower slope overlaps with the preloading zone of the upper slope, it will relax (or strengthen) the rock and soil mass in the overlapping area of the upper slope. As a result, the stress of the retaining structure in the overlapping area is affected, and the larger the overlap range is, the greater the influence is. For the retaining structure outside the overlapping zone, the force of the retaining structure is not affected, and the overlapping effect of the affected area is the fundamental reason for the change of the retaining structure.
【作者单位】： 后勤工程学院土木工程系;68612部队;
【基金】：国家自然科学基金项目(No.41072243,No.41272356) 国家科技支撑计划项目(No.2012BAK05B02)~~
【分类号】：TU753
本文编号：2430423
[Abstract]:According to the relative variation trend of slope body displacement after slope construction, a clear definition of slope excavation relaxation area and pre-compression area is given, and the excavation relaxation area and pre-pressure area are collectively called slope body influence area. The construction process of multi-stage slope is simulated by large-scale model test, and the concept of overlapping effect of influence zone is put forward. If the excavation relaxation area (or preloading area) of the lower slope overlaps with the preloading zone of the upper slope, it will relax (or strengthen) the rock and soil mass in the overlapping area of the upper slope. As a result, the stress of the retaining structure in the overlapping area is affected, and the larger the overlap range is, the greater the influence is. For the retaining structure outside the overlapping zone, the force of the retaining structure is not affected, and the overlapping effect of the affected area is the fundamental reason for the change of the retaining structure.
【作者单位】： 后勤工程学院土木工程系;68612部队;
【基金】：国家自然科学基金项目(No.41072243,No.41272356) 国家科技支撑计划项目(No.2012BAK05B02)~~
【分类号】：TU753
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