CAJ | 학술논문

为了分析苏家河口面板堆石坝坝体在强震作用下的安全性能，建立了面板堆石坝的整体三维有限元模型和面板、趾板子模型，采用Hardin-Drnevich本构模型，对坝体在强震作用下的动力响应规律进行了详细分析。结果表明，在0.38 g的强震作用下，面板堆石坝的加速度、动位移、动应力以及垂直缝和周边缝的动变形分布符合一般规律，未发现有特殊不利的现象，整体上满足抗震要求，但是坝体顶部振动的“鞭梢冶效应比较明显，在3/4坝高以上坝顶区域以及靠近下游坡面处存在较小的拉应力区域。建议加强3/4坝高以上区域面板、坝顶及下游护坡的抗震工程措施，以保证大坝在强震下的安全。
위료분석소가하구면판퇴석패패체재강진작용하적안전성능，건립료면판퇴석패적정체삼유유한원모형화면판、지판자모형，채용Hardin-Drnevich본구모형，대패체재강진작용하적동력향응규률진행료상세분석。결과표명，재0.38 g적강진작용하，면판퇴석패적가속도、동위이、동응력이급수직봉화주변봉적동변형분포부합일반규률，미발현유특수불리적현상，정체상만족항진요구，단시패체정부진동적“편소야효응비교명현，재3/4패고이상패정구역이급고근하유파면처존재교소적랍응력구역。건의가강3/4패고이상구역면판、패정급하유호파적항진공정조시，이보증대패재강진하적안전。
As the Sujiahekou concrete-face rock-fill dam ( CFRD) is located next to the strong earthquake activity belt, the analyze and evaluation of the safety performance of the dam should be assessed. To archive this goal, this study established the three-dimensional finite element model of the CFRD and corresponding sub model of concrete face and toe board. We used the Hardin-Drnevich constitutive model to calculate and analyze the dynamic response rules of dam's body under strong earthquakes in detail. The results show that under the action of 0.38g earthquake, the acceleration, dynamic displacement, dynamic stress, and dynamic deformation of vertical seam and peripheral joint distribution conform to the general rules. There is no special adverse phenomenon;The CFRD can meet seismic requirements. However, the whipping effect of the dam body vibration is obvious and there is a small tensile stress area in 3/4 dam high above crest and areas close to the downstream slope. Therefore, seismic engineering measures, strengthening the 3/4 dam high above area panel, dam crest and downstream slope, have been suggested to ensure the safety of the dam in earthquake.