平板载荷试验应力影响深度与承压板尺寸关系的探讨  

Discussion on Relationship Between Stress Influence Depth and Pressure Plate Size in Plate Load Test

作　　者：何峰[1] He Feng(Chemical Industry Geotechnical Engineering Co. , Ltd.)

机构地区：[1]化学工业岩土工程有限公司,南京市210031

出　　处：《勘察科学技术》2018年第1期1-4,共4页Site Investigation Science and Technology

摘　　要：为探讨浅层平板载荷试验应力影响深度与承压板尺寸的关系,该文采用理论计算(弹性半空间理论、分层总和法变形量计算)与现场实际验证(平板载荷试验埋设土压力计)相结合的方法对承压板下地基附加应力进行分析,试验得出基底附加应力影响深度和沉降变形影响深度,从而确定应力影响深度与承压板尺寸的关系,得出平板载荷试验测定地基承载力时承压板应与实际基础的尺寸相符才能真实反映地基变形量的结论。In order to discuss the relationship between the stress influence depth of shallow plate load test and the size of bearing plate,in this paper,the additional stress of foundations under the bearing plate is analysed by the combination method of theoretical calculation（ elastic half space theory,layered summation method of deformation calculation） and field actual verification（ plate load test embedding earth pressure gauge）. Through verifying,the influence depth of the additional stress on the base and the influence depth of the settlement deformation are obtained by test. Then the relationship between the stress influence depth and the bearing plate size is determined. The conclution shows that the bearing plate should consistents with the size of the actual foundation,the deformation of foundation can be reflected actually,when the bearing capacity of the foundation is measured by the plate load test.

关 键 词：平板载荷试验 附加应力 承压板尺寸 影响深度 

分 类 号：TU433[建筑科学—岩土工程]