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面板堆石坝是一种常见的挡水构筑物。在堆石填筑技术的基础上,通过堆石体中布设预应力锚索和下游坝坡增设钢筋混凝土框架网,将锚索分别与上游坝坡面板和下游坝坡框架锚固起来,提出了一种堆石体与锚固体协同工作、增强稳定性、减少填筑体的新型坝体结构——锚固面板堆石坝。阐述了锚固面板堆石坝的构筑方法,应用邓肯—张E-B模型的有限元数值方法,比较分析了堆石坝有、无预应力锚索加固条件下的变形特征及稳定性。分析表明锚固面板可以提高坝体的稳定性、缩短坝体底宽、减少填筑工程量,获得了经济效益。
Face rockfill dam is a common water retaining structure. On the basis of rockfill filling technology, prestressed anchor cables are laid in the rockfill body and the reinforced concrete frame net is added to the downstream dam slope to anchor the anchor cables to the upstream dam slope panel and the downstream dam slope frame respectively. Rockfill and anchor body work together to enhance stability and reduce the body structure of a new dam - Anchored Faced Rockfill Dam. The construction method of anchored concrete face rockfill dam is described. The finite element numerical method of Duncan-Chang E-B model is used to analyze and analyze the deformation characteristics and stability of rockfill dam with and without prestressed anchor. The analysis shows that the anchoring panel can improve the stability of the dam body, shorten the bottom width of the dam, reduce the amount of filling work, and obtain the economic benefits.