岩土力学
巖土力學
암토역학
ROCK AND SOIL MECHANICS
2010年
2期
361-365
,共5页
福州地区典型土%动剪切模量%阻尼比%共振柱试验%围压
福州地區典型土%動剪切模量%阻尼比%共振柱試驗%圍壓
복주지구전형토%동전절모량%조니비%공진주시험%위압
typical soils in Fuzhou area%dynamic shear modulus%damping ratio%resonant column test%confining pressure
通过对福州地区淤泥、淤泥质土、粉质黏土、粉质黏土与粉砂互层土、粉砂、残积土等6类典型土的共振柱试验,详细探讨了围压大小、土的性质对这6类典型土的动剪切模量G及阻尼比γ的影响.通过试验和理论分析,给出了福州地区6类典型土在不同围压下的G/G_(max)和λ /λ_(max)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6类典型土G/G_(max)和λ/λ_(max)随γ变化的平均曲线的参数的影响规律,对实际工程具有一定的借鉴作用.
通過對福州地區淤泥、淤泥質土、粉質黏土、粉質黏土與粉砂互層土、粉砂、殘積土等6類典型土的共振柱試驗,詳細探討瞭圍壓大小、土的性質對這6類典型土的動剪切模量G及阻尼比γ的影響.通過試驗和理論分析,給齣瞭福州地區6類典型土在不同圍壓下的G/G_(max)和λ /λ_(max)隨γ變化的平均麯線及其參數的推薦值,併定量地給齣圍壓對這6類典型土G/G_(max)和λ/λ_(max)隨γ變化的平均麯線的參數的影響規律,對實際工程具有一定的藉鑒作用.
통과대복주지구어니、어니질토、분질점토、분질점토여분사호층토、분사、잔적토등6류전형토적공진주시험,상세탐토료위압대소、토적성질대저6류전형토적동전절모량G급조니비γ적영향.통과시험화이론분석,급출료복주지구6류전형토재불동위압하적G/G_(max)화λ /λ_(max)수γ변화적평균곡선급기삼수적추천치,병정량지급출위압대저6류전형토G/G_(max)화λ/λ_(max)수γ변화적평균곡선적삼수적영향규률,대실제공정구유일정적차감작용.
Through the resonant column test on such 6 sorts of typical soils such as mud,muddy soil,silty caly,silty clay and silty sand interbedded strata,silt and residual soil,the influences of confining pressure and soil property on dynamic shear modulus G and damping ratio γ of the 6 typical soils have been explored in detail. By means of tests and theoretical analyses,the average curves of G/G_(max) and λ/λ_(max) with the change of γ under different confining pressures as well as their recommended values of parameters for the 6 sorts of typical soils in Fuzhou area are presented.Besides,the influence patterns of the average curve parameters for G/G_(max) and λ /λ_(max) of such 6 soils with the change of γ are also quantified.The above findings would be used as reference for practical projects.
