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研究含横缝碾压混凝土拱坝工作状态。含横缝碾压混凝土拱坝未灌浆前若出现洪水强迫蓄水，横缝或诱导缝在施工末期（汛前）灌浆，由于蓄水后坝体进一步降温重新拉开灌浆缝都会破坏拱坝整体性。当缝宽不大时（＜０．５ｍｍ），在水压自重作用下梁向变位加大，可将部分拱重新压紧，形成应力重新分布。作者用体积向量提高简化计算中缝的变形场精度。坝踵水平裂缝出现后，拱作用逐渐加大，梁向大变位和接触形成新拱可使水平裂缝停止扩展。
Research on working status of arch dam with transverse joint. If there is a flood-forced water storage before horizontal grouting, the transverse joint or induced joint will be grouted at the end of construction (before the flood season), and then the grouted seams will be destroyed again due to the further cooling of the dam after storage Sex. When the slit width is not large (<0.5mm), under the action of hydraulic self-weight, the deformation of the beam increases, part of the arch can be re-pressed to form the stress redistribution. The author uses the volume vector to improve the accuracy of the deformation field in the simplified calculation of the seam. After the occurrence of horizontal cracks in the dam heel, the effect of the arch gradually increases. The large deformation of the beam and the contact with the new arch can stop the horizontal cracks from expanding.