挟沙水流对混凝土的冲磨机理研究及冲磨试验机研发  

Study on abrasion resistance mechanism of concrete on sediment-laden water flow and rotating-jet mode concrete abrasion resistance performance testing machine

作　　者：李浩平[1] 李峰[2] 

机构地区：[1]三峡大学机械与材料学院,湖北宜昌443002 [2]三峡大学土木水电学院,湖北宜昌443002

出　　处：《机械研究与应用》2011年第2期37-40,共4页Mechanical Research & Application

基　　金：中国水利水电科学研究院开放研究基金(IWHRKF201011)

摘　　要：研究了挟沙水流对混凝土的冲磨破坏机理及主要影响因素,分析了常用的混凝土冲磨试验方法,提出了旋转喷射式冲磨试验原理,并根据此原理研制了旋转喷射式混凝土抗冲耐磨试验机。与现有冲磨机相比较,该试验机的模拟冲刷过程更接近混凝土真实工况,并且可以实现不同冲刷条件下一定冲刷速度范围内的任意速度调节,冲刷速度高,冲磨效果好,能够有效地对不同配合比混凝土的抗冲磨性能作出比较。The abrasion resistance mechanism and factors of concrete are studied,common concrete abrasion resistance performance test methods are analyzed,the principle of rotating-jet mode concrete abrasion resistance performance test is purposed,and in accordance with this principle,the rotating-jet mode concrete abrasion resistance performance testing machine is developed.Through comparing with existing testing machine,the testing machine′ simulation of erosion process is closer to the real condition,any speed regulation can be achieved under the different erosion conditions within a certain speed range,very high erosion speed and good erosion effect,abrasion resistance performance can be effectively compared for different mix proportion concrete.

关 键 词：挟沙水流 混凝土 冲磨机理 旋转喷射式冲磨试验机 

分 类 号：TV32[水利工程—水工结构工程] TH12[机械工程—机械设计及理论]