摘要
通过ABAQUS有限元分析软件建立了连续玻璃纤维缠绕的聚酯树脂基玻璃钢锚环的有限元计算模型,对玻璃钢锚环与金属夹片、钢绞线配合使用的支护系统进行了加载分析。通过改变玻璃钢锚环的半锥角,研究了玻璃钢锚环与夹片的锥角搭配对锚具承载性能的影响。计算分析表明,在300 k N载荷作用下,计算模型中锚环纤维方向承载性能良好;轴对称面内最大主应力集中在锚环与夹片接触面附近,此处小范围基体开裂对锚环承载性能影响不大;锚环对称面内剪应力大面积超出基体强度极限,是影响锚环承载性能的主要因素。当夹片半锥角为7°时,玻璃钢锚环半锥角为6.3°～6.5°能改善锚环的应力分布状态,提高锚具的承载能力。
This paper established a finite element calculation model of continuous glass fiber winding and polyester resin GFRP anchor ring with ABAQUS ,which conducted a loading analysis on the supporting system consisting of GFRP anchor ring, metal clip and steel strand. A research was made on the influence on the loading capacity of an- chor ring by changing the match of taper angles of GFRP anchor ring and clip. According to the calculation analy- sis, the anchor ring of the calculation model has a good bearing capacity in fiber direction under the load of 300 kN;in the symmetrical plane, the maximum principal stress is concentrated nearby the contact face between anchor ring and clip, and the crack of resin in small scale has small influence on the anchor ring bearing capacity;in sym- metrical plane, a large area of shearing stress of anchor ring surpassing resin ultimate stress is the main factor which can influence the loading capacity of anchor ring. When the half taper angle of clip is 7 ° and that of GFRP anchor ring is 6.3°-6.5° ,the stress distribution and loading capacity of anchor ring can be well improved.
出处
《太原科技大学学报》
2016年第2期149-154,共6页
Journal of Taiyuan University of Science and Technology
基金
山西省研究生优秀创新项目(20133111)
关键词
玻璃钢
锚环
有限元分析
锥角搭配
glass fiber reinforced plastics
anchor ring
finite element analysis
match of taper angles
