摘要
为探索平板载荷试验中支墩荷载及承压板荷载会对地基土体产生破坏的情况,结合滑移线理论,采用数值计算方法,分析了多因素影响下的载荷试验周围土体破坏区域。结果表明,在相同荷载作用下,粘土滑移破坏范围值与理论值相差不大;内摩擦角相同时,不同荷载作用下的粘土滑移破坏范围值相同;当基础宽度与支墩间距变化时,土体破坏均在某一特定区域内;当基础与支墩的间距固定时,一定载重下,土体破坏区域将随基础宽度的增大而增大,但当基础足够大时,基础对载重在土体面上作用的压强值达不到地基土的极限承载力,土体将不会破坏。
For the purpose of studying soil failure caused by the buttress and bearing plate in the plate loading test, based on slip line theory, numerical simulation was used to study the effects of different factors on soil failure range. Results of the Simulation showed that the slip range of clay is not much different from the theoretical value under the same load; when the internal friction angle is the same, the slip range of clay under different loads is the same; when the base width and the spacing of the buttress changes, the soil damage is in a particular area; when the spacing between the foundation and the buttress is fixed, the soil failure area will increase with the increase of the base width under certain load, however, when the foundation is big enough, the foundation will not reach the ultimate bearing capacity of the foundation soil, and the soil will not be destroyed.
出处
《建筑监督检测与造价》
2017年第3期6-10,共5页
Supervision Test and Cost of Construction
