大面积堆载作用下地基变形影响分析  

Analysis on the deformation of foundation in large-scale preloading field

作　　者：孙晓东[1,2] 

机构地区：[1]大地工程开发(集团)有限公司,北京100102 [2]天津城市建设学院,天津300384

出　　处：《河北工程大学学报（自然科学版）》2012年第3期27-29,36,共4页Journal of Hebei University of Engineering:Natural Science Edition

摘　　要：通过具体工程实例,对大面积堆载作用下软土地基变形进行了详细计算与分析,并与复合地基处理后的地基变形量进行了对比。分析认为大面积堆载对地基变形影响深度较大,超出了常规荷载作用下的影响深度;与复合地基相比,大面积堆载地基变形量要多出25倍左右;大面积堆载影响深度范围内,要考虑负摩阻力作用。Based on the engineering examples, the detailed calculation and analysis on the role of foundation deformation with large -scale preloading were carried out and compared with the deforma- tion of composite foundation treatment. The results showed that the influence depth of foundation de- formation under the large - scale preloading was large, and exceed the influence depth of conventional load depth; compared with the composite foundation, the deformation of foundation under large - scale preloading was 25 times more than composite foundation; the negative skin friction should be considered in influence depth range under large - scale preloading.

关 键 词：大面积堆载 地基变形 影响深度 复合地基 

分 类 号：TU433[建筑科学—岩土工程]