面板堆石坝沥青混凝土心墙动力特性研究

Study on dynamic characteristics of asphalt concrete core wall of face rockfill dam

采用动力三轴试验对面板堆石坝沥青混凝土心墙的动力特性进行了研究,得出其最大动模量Edmax和最大剪切模量Gdmax随着Kc发展关系;沥青混凝土阻尼比为0.15,在不同围压和17℃试验条件下,对沥青混凝土施加较大的动应力,在100振次以内所产生的动应变是很小的(不足0.1%),沥青混凝土不存在动强度破坏问题。

The dynamic triaxial test is adopted to research the dynamic characteristics of asphalt concrete core wall of face rockfill dam. The results show that the maximum dynamic modulus(Edmax) and the maximum shear modulus(Gdmax) are changing with the Kc development. The damping ratio of asphalt concrete is 0.15, under the different confining pressure and 17℃ test conditions, the dynamic strain produced within 100 times vibration is very small(less than 0.1%) when applied the large dynamic stress for the asphalt concrete, there is no dynamic strength failure problems for the asphalt concrete.