CAJ | 학술논문

很多河流的堤防工程修建在人口密集地区,失事后往往会造成严重后果,尤其是细粒土填筑而成的堤防,在地震作用下存在液化破坏的可能。采用合理方法对堤防进行液化判别,确定其在地震作用下的动力稳定性十分必要。针对某实际堤防工程,进行五种拟用筑堤土料动力特性试验研究,并基于试验成果,采用能够考虑地基-堤身相互作用的非线性剪切梁方法,对堤防的液化可能性进行判别。研究表明：提出的非线性剪切梁方法能够考虑地基和堤身间的相互作用,且简单实用、可操作性强；土体的相对密度、空隙比和颗粒粒径大小及其他粒分布特性对其抗地震液化能力影响较大；在设定运行工况下,Ⅷ度地震时除拟选粉质壤土外,其他四种土筑堤均有发生液化的可能,选用粉质壤土筑堤较合适。
흔다하류적제방공정수건재인구밀집지구,실사후왕왕회조성엄중후과,우기시세립토전축이성적제방,재지진작용하존재액화파배적가능。채용합리방법대제방진행액화판별,학정기재지진작용하적동력은정성십분필요。침대모실제제방공정,진행오충의용축제토료동력특성시험연구,병기우시험성과,채용능구고필지기-제신상호작용적비선성전절량방법,대제방적액화가능성진행판별。연구표명：제출적비선성전절량방법능구고필지기화제신간적상호작용,차간단실용、가조작성강；토체적상대밀도、공극비화과립립경대소급기타립분포특성대기항지진액화능력영향교대；재설정운행공황하,Ⅷ도지진시제의선분질양토외,기타사충토축제균유발생액화적가능,선용분질양토축제교합괄。
Levee engineering is mostly built in densely-populated area,so the crash will always cause serious consequences especially for the levee filled by sandy soil which may develop into liq-uefaction under the action of earthquake.Therefore,the usage of reasonable methods of liquefac-tion on the levee to determine the dynamic stability under earthquake action is very necessary. This paper,in view of a practical levee engineering,conducted dynamic characteristic research on five kinds of materials to be used,basing on the research results of soil material dynamic charac-teristic test,and estimated liquefaction possibility of the levee by using the nonlinear shear wedge method which can consider the interaction between the levee and the foundation.Research shows that:the nonlinear shear wedge method can consider the interaction between the levee and the foundation,and is simple and practical;soil relative density,void ratio,particle size and particle distribution characteristics have a great influence on its ability to resist seismic liquefaction;in a set operation under the condition of 8 degree earthquake,only the silty loam levee will not lead to the occurrence of liquefaction,the other four materials exist the possibility of liquefaction,in conclusion,it is appropriate to select the silty loam to build the levee.