CAJ | 학술논문

为了解地铁行车荷载下天津滨海软土累积变形变化规律，采用室内空心圆柱测试系统GCTS，对天津滨海新区软土进行应力控制的循环振动三轴试验，模拟地铁运营荷载，研究循环振动荷载下土体累积变形与土体围压、荷载幅值以及荷载频率之间的变化规律，并探讨了不同条件下最终土体变形与各参数之间的关系。试验结果表明土体最终变形随着荷载幅值、振动频率的增加而增加，随围压值的增加而减少。
위료해지철행차하재하천진빈해연토루적변형변화규률，채용실내공심원주측시계통GCTS，대천진빈해신구연토진행응력공제적순배진동삼축시험，모의지철운영하재，연구순배진동하재하토체루적변형여토체위압、하재폭치이급하재빈솔지간적변화규률，병탐토료불동조건하최종토체변형여각삼수지간적관계。시험결과표명토체최종변형수착하재폭치、진동빈솔적증가이증가，수위압치적증가이감소。
For the objective of knowing the variation law of the cumulative deformation of Tianjin coastal mollisol under subway vehicle loading,the indoor hollow cylinder testing system GCTS is adopted;the stress control circulation vibration triaxial experiments on mollisol in Tianjin coastal new area is conducted;the subway operation load is simulated;the variation law of the accumulative deformation of soil mass under circulation vibration load,confining pressure of soil mass, loading amplitude and vibration frequency are researched;the relationship between the final deformation of soil mass and the parameters under different conditions is discussed. The experimental results show that the final deformation of soil mass increases along with the increase of load amplitude and vibration frequency,and decreases along with the increase of con-fining pressure.