混凝土高坝动力模型材料的试验研究

基于动力模型试验的动力相似准则，经一系列配合比和力学性能试验及动弹性模量超声波检测，研制了新型高混凝土坝动力试验模型材料DMM。初次提出以河砂作为混凝土坝动力相似材料的粗骨料主材，显示出能够借此有效调控动弹性模量和材料重度的新特点，明显优于石英砂等材料。大量试验结果表明，DMM材料不仅重度高、动弹性模量低，且其应力-应变关系中具有稳定而明显的线弹性阶段，符合高混凝土坝动力模型试验和相似准则的基本要求，且环保无毒、价廉、制作周期较短，可成为优良的动力相似材料。

Experimental research on dynamic model material of high concrete dam

Based on the dynamic similarity criteria of dynamic model tests,a new type of dynamic test model materials of high concrete dams named DMM has been developed through a series of tests of proportion of mixture and mechanical properties as well as the ultrasonic detection.The fluvial sand being used as the coarse aggregate in the dynamic similarity material of concrete dams has been presented for first time.It has been found that by the way of regulating its mixture proportion the dynamic elastic modulus and ...