新型曲面CFRP板锚具力学性能研究
Research on Mechanical Properties of New Curved CFRP Anchorage
侯苏伟 1翁永峰 1周颖1
作者信息
- 1. 北京建筑大学土木与交通工程学院,北京 102616
- 折叠
摘要
为解决传统CFRP板夹持式锚具中出现的张拉应力不足和螺栓预紧力难以控制的问题,根据其受力机理并以双曲面CFRP板锚具设计为基础,结合ANSYS有限元软件对比分析了不同尺寸的锚具性能,确定了最优的锚具尺寸并进行了相应的加工,然后对双曲面CFRP板锚具进行了静载试验.试验结果表明:内夹板厚度为5 mm时,挤压应力分布最均匀;外夹板厚度的最优范围为25～30 mm,弧度最优解为0.75～1.00 mm;当双曲面CFRP板锚具可以承受的最大张拉力为499.96 kN、最大锚固效率为104.16％、CFRP板的最小滑移量为1.93 mm时,锚具的锚固效果最佳.
Abstract
In order to solve the problems of insufficient tensile stress and difficult control of bolt preload in traditional carbon fibre reinforced plastics(CFRP)plate clamping anchorage,according to its force mechanism and based on the hyperbolic CFRP anchorage design,the performance of anchors of different sizes was compared and analyzed by ANSYS finite element software.The optimal anchorage size was determined and processed accordingly.And then,the static load test of hyperboloid CFRP plate anchors was carried out.The test results show that when the thickness of the inner splint is 5 mm,the extrusion stress distribution is the most uniform;The optimal range of splint thick-ness is between 25～30 mm,and the optimal solution of radian is between 0.75～1.00 mm;When the maximum tensile force of the hyperbolic CFRP is 499.96 kN,the maximum anchoring efficiency is 104.16％,and the mini-mum slip of the CFRP is 1.93 mm,the anchoring effect of the anchorage is best.
关键词
双曲面锚具/CFRP板/静载试验/锚固性能/滑移Key words
hyperbolic anchorage/CFRP plate/static load test/anchorage performance/slip引用本文复制引用
基金项目
国家自然科学基金项目(51508019)
北京市教育委员会科技一般项目专项资金项目(KM202010016015)
北京建筑大学双塔计划-建大英才项目(JDYC20160206)
北京建筑大学市属高校基本科研业务费专项资金项目(X18115)
北京建筑大学市属高校基本科研业务费专项资金项目(X18091)
出版年
2024
国家科技期刊平台
NSTL
万方数据