高土石坝综合抗震措施及其效果的验算

简要回顾了近十年来高土石坝的破坏机理和抗震措施研究方面的成果，指出地震时高土石坝破坏性态及可行的抗震对策，提出了一个综合考虑多种减震措施的高土石坝抗震方案。采用快速拉格朗日差分方法对某高土石坝进行了弹塑性动力反应分析，分别研究了采用抗震措施和不采用抗震措施坝体的永久变形，从而考察本文建议的抗震方案的减震效果，同时研究了地震波的频谱特性以及同时输入水平和竖向地震动对抗震效果的影响。计算结果显示，采用本文建议的抗震方案可以使坝顶区的竖向和水平永久位移降低接近50％；当同时输入水平和竖向地震动时，本文的综合抗震措施减震效果依旧明显。

Comprehensive earthquake resistant measure of high earth-rockfill dams and effectiveness verification

A review of the advancement in study on failure mechanism and earthquake resistant measure of high earth-roekfill dams is presented. A comprehensive countermeasure including three techniques to strengthen the dam is proposed. The seismic responses of a high earth-roekfill dam analyzed by means of Fast Lagrangian Analysis Method show that the proposed measure can effectively reduce the vertical and horizontal permanent displacement near the top of the dam by 50%, if only horizontal earthquake is considered. In ease both horizontal and vertical earthquake are taken into account the resistant measure still effective.