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中文摘要：
岸坡突变所产生的不均匀沉降变形常常是导致土石坝心墙发生横向裂缝的主要原因。使用糯扎渡高心墙堆石坝心墙混合土料进行了模拟心墙发生横向裂缝的土工离心机模型试验。试验中再现了由于岸坡坡度变化导致坝顶发生横向裂缝的现象。采用工程中常用的3种裂缝分析方法：倾度法、Leonards法和有限元应力法对试验结果进行了分析。结果表明，前两种方法仅在测点较多时才是适用的，而有限元应力法对土石坝心墙横向裂缝问题更为有效。
英文摘要：
The differential settlement induced by discontinuous gradient of bank slope is one of the main reasons for transverse cracking in earth core of high dams. A series of centrifuge model tests were performed to investigate transverse cracking using mixed core soils of the Nuozhadu dam. Transverse cracks leaded by the abrupt change of the gradient of the bank slope are observed in the centrifuge model tests. Then the experimental results were analyzed with three numerical methods commonly used in earth core dam engineering： deformation gradient method, Leonards-method and finite-element method. The results show that the first two methods are applicable only when sufficient measuring data are obtained; the finite-element method is more efficient for transverse cracking analysis in earth core dams.
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