水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
5期
180-184
,共5页
循环荷载%剪切模量%围压%次数%循环应力比
循環荷載%剪切模量%圍壓%次數%循環應力比
순배하재%전절모량%위압%차수%순배응력비
cyclic loading%shear modulus%confining pressure%times of cycles%cyclic stress ratio
海上风电基础设计中必须考虑海底土体在循环荷载作用下的软化效应，利用GDS动三轴仪进行不同围压、不同循环应力比和不同循环次数下土体的动三轴实验。将各因素进行归一化处理，采用回归方法分析土体剪切模量的衰减与这三者之间的关系，得出相应的计算模型并用相关数据验证，发现两者吻合较好。
海上風電基礎設計中必鬚攷慮海底土體在循環荷載作用下的軟化效應，利用GDS動三軸儀進行不同圍壓、不同循環應力比和不同循環次數下土體的動三軸實驗。將各因素進行歸一化處理，採用迴歸方法分析土體剪切模量的衰減與這三者之間的關繫，得齣相應的計算模型併用相關數據驗證，髮現兩者吻閤較好。
해상풍전기출설계중필수고필해저토체재순배하재작용하적연화효응，이용GDS동삼축의진행불동위압、불동순배응력비화불동순배차수하토체적동삼축실험。장각인소진행귀일화처리，채용회귀방법분석토체전절모량적쇠감여저삼자지간적관계，득출상응적계산모형병용상관수거험증，발현량자문합교호。
Softening effect of saturated clay under cyclic loads must be considered when designing foundations of marine wind power structures .The dynamic triaxial experiments were conducted with different confining pressures ,cyclic stress ra-tios and times of cycles by using GDS dynamic triaxial system .And then the three factors were normalized to study the rela-tionship between the three factors and the shear modulus degradation by adopting regression analysis .Accordingly ,the cal-culation model was obtained and verified with relevant data .It was found that the model was in well accord with the data .
