CAJ | 학술논문

以地震作用下的非贯通节理岩质斜坡为研究对象，利用大型有限元软件 ANSYS 建立数值模型。数值模拟结果表明：地震作用下非贯通节理岩质斜坡的稳定系数受结构面的长度、密度、贯通率、展布方向等因素影响；节理面的位移放大效应和变形积累效应明显；岩桥的破坏在地震初期比较剧烈，之后在地震作用下继续发生破坏，在经过地震波波幅较大的波段后，斜坡的变形破坏才稳定下来；地震作用下，岩桥内部应力波动剧烈，拉剪共同作用导致了岩桥的最终破坏；层间节理位移和层间摩擦应力分布很不均匀，不同位置的节理的动力响应也有较大不同。
이지진작용하적비관통절리암질사파위연구대상，이용대형유한원연건 ANSYS 건립수치모형。수치모의결과표명：지진작용하비관통절리암질사파적은정계수수결구면적장도、밀도、관통솔、전포방향등인소영향；절리면적위이방대효응화변형적루효응명현；암교적파배재지진초기비교극렬，지후재지진작용하계속발생파배，재경과지진파파폭교대적파단후，사파적변형파배재은정하래；지진작용하，암교내부응력파동극렬，랍전공동작용도치료암교적최종파배；층간절리위이화층간마찰응력분포흔불균균，불동위치적절리적동력향응야유교대불동。
Finite element software ANSYS was used to establish a numerical model to research the rock slope contai-ning intermittent joints under earthquake.Numerical simulation results showed that:under earthquake action,the stability coefficient of rock slope with intermittent joints was influenced by the length density,rate of connectivity, spreading directions of structural planes;the displacement amplification effect and deformation accumulation effect of joint surface were obvious.In the early stage of earthquake action,the damage of rock bridges was very violent, and then the damage continued under earthquake.The deformation and failure of slope stabilized until after large amplitude band.Moreover,the internal stress of the rock bridges fluctuated remarkably under earthquake,and the tension action and shearing action together led to the final failure of the non-coalescence regions;the contact sliding distance and frictional stress between layers distributed very unevenly,and the dynamic response of joints at differ-ent positions were quite different.