OPTIMIZATION ANALYSIS AND FATIGUE PERFORMANCE EVALUATION OF LARGE TONNAGE FRP CABLE ANCHOR SYSTEM
In view of the special problems tonnage anchorage system and based on the concept of early large tonnage anchorage,designed a large-tonnage variable stiffness bond type anchorage system.In order to make the anchor device easy to manufacture,meet size and be suitable for engineering application,establish finite element model of tapered anchorage device by using the finite element software.Considering the frictional force between the load transfer materials and anchorage interface is the actual stress condition that can not be ignored,the parameters such as elastic modulus,bond length,taper angle of the anchorage and wall thickness of the anchoring device are calculated and optimization analyzed,then design one thousand tons of long-span cable-stayed bridge anchorage system.Through input s-n curve of FRP cable and fatigue parameters to the finite element method,fatigue analysis evaluation were carried out.Results show that the anchorage system can effectively solve the problem of stress concentration and cable surface radial stress and shear stress distribution is relatively uniform in the anchorage zone.The fatigue life under certain stress ratio and the design safety factor is more than 2 million times,then achieve reliable anchor for a thousand-ton cable.
FRP cable anchorage system 3D finite element optimization analysis fatigue analysis
Bo Feng Xin Wang Zhishen Wu
School of Civil Engineering,Southeast University No.2,Sipailou,Nanjing,210096,China School of Civil Engineering,Southeast University No.2,Sipailou,Nanjing,210096,China;International In
国际会议
新加坡
英文
1-4
2017-07-19（万方平台首次上网日期，不代表论文的发表时间）