摘要
为了适应现代桥梁大跨度高承载力的需求,桥梁所用拉索规格逐渐增大。进行疲劳试验的拉索试件直径的增加,对拉索试验机吨位有更高的要求。文中从实际需求出发,设计拉索疲劳实验装置,该装置是先通过千斤顶对大吨位拉索施加初始静载,再通过小吨位作动器对拉索施加应力幅值的方式进行试验,该装置的研制节省了设备总体的造价、节约了运营阶段耗能成本、提高了疲劳试验的效率。
In order to meet the needs of modern bridges with large span and high bearing capacity,the cable specifications for bridges are gradually increasing. The increase in the diameter of the cable test piece for the fatigue test has higher requirements on the tonnage of the cable test machine. In this paper,the cable fatigue test device is designed from the actual demand. The device firstly applies the initial static load to the large tonnage cable through the jack,and then tests the tension amplitude of the cable through the small tonnage actuator. The research has saved the overall cost of the equipment,saved the energy cost in the operation phase,and improved the efficiency of the fatigue test.
作者
耿铁锁
谭岩斌
张哲
邱文亮
GENG Tiesuo;TAN Yanbin;ZHANG Zhe;QIU Wenliang(School of Civil Engineering,Dalian University of Technology,Dalian 116023,China)
出处
《实验科学与技术》
2019年第5期116-119,134,共5页
Experiment Science and Technology
基金
冰荷载作用下渤海海域桥梁结构反映分析和安全评估方法研究(51778108)
关键词
桥梁
拉索
疲劳
试验机
bridge
cable
fatigue
testing machine
