地震工程学报Issue(3)：746-752,7.DOI:10.3969/j.issn.1000-0844.2014.03.0746
大连临空产业园填海造地工程砂土残余变形试验研究
Research on the Residual Deformation of Sandy Soil of Land Reclamation in Airport Industrial Park in Dalian
摘要
Abstract
We conducted dynamic characteristic tests on sandy soil samples collected from Dalian Airport Industrial Park,adopting the DSZ-1-type electromagnetic vibration triaxial apparatus de-veloped by Engineering Mechanics,China Earthquake Administration.Sandy soils are character-ized by strong permeability,high shear strength,small deformation,and subsidence.This test in-vestigated the dynamic residual deformation characteristics of two types of sand(i.e.,shallow and deep sand)under a complex stress state.Increasing the dynamic stress ratio and confining pressure improved the residual volumetric strain and residual shear strain,and the influences of both quan-tities on both strains could be described by the same law.However,the consolidation ratio was re-duced by increasing the residual volumetric strain,and increased by increasing the residual shear strain.While the consolidation ratio of residual volumetric strain significantly affected the fitting results,that of the residual shear strain exerted small impact.The influences of consolidation ratio on the residual volumetric strain and residual shear strain were significantly different.The C vr was linearly related to the dynamic strain amplitude of residual volumetric strain as well as residual shear strain,and the discreteness was very small.In contrast,the relationship between C dr/S 21 and the dynamic strain amplitude had a relatively large discreteness.From the test results,we derived the fundamental Shen Zhujiang model parameters for analyzing seismic subsidence.The results may provide a foundation for the deformation analysis of subsidence at Dalian Airport.They may also guide industrial park land reclamation engineering and seismic design on earthquake-prone ground,and are applicable to similar engineering designs.关键词
砂土/残余体应变/残余剪应变/沈珠江模型Key words
sandy soil/residual volumetric strain/residual shear strain/Shen Zhujiang’s model分类
建筑与水利引用本文复制引用
赵杰,云高杰,王桂萱..大连临空产业园填海造地工程砂土残余变形试验研究[J].地震工程学报,2014,(3):746-752,7.基金项目
辽宁省教育厅(2012-0102517) （2012-0102517）
大连市科学技术基金(2010J21DW013) （2010J21DW013）
