华南地震
華南地震
화남지진
SOUTH CHINA JOURNAL OF SEISMOLOGY
2014年
z1期
204-207
,共4页
陈章毅%宋金良%刘文程%廖原
陳章毅%宋金良%劉文程%廖原
진장의%송금량%류문정%료원
海洋软土%动三轴仪%动阻尼比%动弹性模量
海洋軟土%動三軸儀%動阻尼比%動彈性模量
해양연토%동삼축의%동조니비%동탄성모량
Marine soft soil%Dynamic triaxial apparatus%Dynamic damping ratio%The dynamic modulus of elasticity
为了分析海洋软土在动力作用下的动力特性,采用了DDS-70型号电磁式动三轴仪器对试样进行分析,分别探讨了海洋软土在不同的加载频率、不同的围压、不同的干密度下的动弹性模量、动强度、动阻尼比等参数的变化规律:通过试验分析得出,频率越大,剪应变的变化范围随着频率的增大而减小;干密度越大,其动剪模量越高;围压越大,当剪应变小于10-4时,曲线呈现出急剧下降趋势。
為瞭分析海洋軟土在動力作用下的動力特性,採用瞭DDS-70型號電磁式動三軸儀器對試樣進行分析,分彆探討瞭海洋軟土在不同的加載頻率、不同的圍壓、不同的榦密度下的動彈性模量、動彊度、動阻尼比等參數的變化規律:通過試驗分析得齣,頻率越大,剪應變的變化範圍隨著頻率的增大而減小;榦密度越大,其動剪模量越高;圍壓越大,噹剪應變小于10-4時,麯線呈現齣急劇下降趨勢。
위료분석해양연토재동력작용하적동력특성,채용료DDS-70형호전자식동삼축의기대시양진행분석,분별탐토료해양연토재불동적가재빈솔、불동적위압、불동적간밀도하적동탄성모량、동강도、동조니비등삼수적변화규률:통과시험분석득출,빈솔월대,전응변적변화범위수착빈솔적증대이감소;간밀도월대,기동전모량월고;위압월대,당전응변소우10-4시,곡선정현출급극하강추세。
In order to analyze the dynami c performance of the Marine soft soil under dynamic action, adopted DDS - 70 type electromagnetic dynamic triaxial apparatus to analyze sample, respectively discusses the Marine soft soil in different frequencies, different confining pressure and the different dry density of dynamic to analyze the elastic modulus, dynamic strength and dynamic damping ratio parameters change rule; Through experimental analysis, the greater the range of shear strain decreases with the increase of frequency, the greater the dry density, the dynamic shear modulus is higher, the greater the confining pressure, when the shear strain is less than 10-4, curve showing a sharp decline.