高土石坝Hardfill新型抗震加固措施

针对现有土石坝坝顶抗震加固措施存在的一些问题，提出一种利用Hardfill材料对高土石坝进行抗震加固的新措施，并采用极限平衡法和动力有限元时程法，对这种抗震加固措施在高土石坝抗震工程中应用的效果与可行性进行研究。分析该措施对坝体抗滑稳定性、永久变形与材料动强度安全性的改善效果；通过分析大坝的加速度、应力和变形状况，研究Hardfill加固措施是否对大坝存在不利影响。结果表明:Hardfill抗震加固措施对增强坝体的整体稳定性、抑制坝体永久变形有较明显的效果，提高了反滤料和心墙料的动强度安全系数，不会对大坝的运行带来不利影响。

A new type aseismic reinforcement measures of high earth and rockfill dam using Hardfill

In allusion to the problems in anti-seismic measures for the crest of earth and rockfill dam, a new kind of seismic strengthening measure has been put forward with the Hardfill materials. The rigid-body limit equilibrium method and dynamic finite element method were used to calculate and analyze the effect of Hardfill seismic strengthening measure in high rockfill dam. Improvements on the stability of dam against sliding, permanent deformation and dynamic strength of materials had been discussed using the Hardfill aseismatic reinforcement. In addition, adverse effects of Hardfill were studied by calculating the acceleration, stress and deformation of the dam. The results indicate that the Hardfill reinforcement will enhance the overall stability, inhibit permanent deformation significantly, and improve the dynamic strength safety coefficient, without adverse effect to the operation of the dam.