厦门常规土动力特性的试验分析  

Testing analysis on dynamic properties of routine soils in Xiamen area

作　　者：蔡辉腾[1,2] 李强 蔡宗文[1] 危福泉[1] 

机构地区：[1]福建省地震局,福建福州350003 [2]福州大学,福建福州350003 [3]中国联合工程公司,浙江杭州310022

出　　处：《四川建筑科学研究》2010年第6期125-128,共4页Sichuan Building Science

基　　金：地震科技联合基金资助项目(105087)

摘　　要：通过对厦门淤泥、淤泥质土、粉质粘土、粉质粘土与粉砂互层土、残积土等五类常规土的共振柱试验,详细地探讨了围压大小、土的性质对这五类常规土的动剪切模量G及阻尼比γ的影响。通过试验和理论分析,给出了厦门五类常规土在不同围压下的G/Gmax和λ/λmax随γ变化的平均曲线及其参数的推荐值,并定量地给出围压对这五类常规土G/Gmax和λ/λmax随γ变化的平均曲线及其参数的影响规律,对实际工程具有一定的借鉴作用。Through the resonant column test on such 5 sorts of routine soils as mud,muddy soil,silty caly,silty clay and silty sand interbedded strata,residual soil,the influence of confining pressure and soil property on dynamic shear modulus G and damping ratio γ of the 5 routine soils was explored in detail.By means of tests and theoretical analyses,the average curves of G/Gmax and λ/λmax with the change of γ under different confining pressures as well as their recommended values of parameters for the 5 sorts of routine soils in Xiamen were presented.Besides,the influence patterns of the average curve parameters for G/Gmax and λ/λmax of such 5 soils with the change of γ were also quantified.The above findings would be used as reference for practical projects.

关 键 词：厦门常规土 动剪切模量 阻尼比 共振柱试验 围压 

分 类 号：TU375.4[建筑科学—结构工程]