四种预应力FRP筋材锚固体系的试验研究  

THE EXPERIMENTAL STUDY ON THE FOUR TYPES OF FRP TENDON ANCHORAGE SYSTEMS

作　　者：涂永明[1] 吕志涛[1] 张继文[1] 钱洋[2] 

机构地区：[1]东南大学混凝土与预应力混凝土结构教育部重点实验室,南京210096 [2]东南大学建筑设计研究院,南京210096

出　　处：《工业建筑》2008年第10期38-41,111,共5页Industrial Construction

基　　金：国家自然科学基金重点项目(50238030);国家自然科学基金资助项目(50178018);"863"计划项目(2001AA336010);教育部博士点基金新教师项目(20070286095)

摘　　要：开发出安全、经济、实用的锚固体系是应用预应力FRP结构的前提条件。通过对我国现有张拉设备的套筒灌胶式、粘砂夹片式、带胶挤压式及带粘结护套的夹片式等四种FRP筋材锚固体系的试验研究,结果表明:粘结套筒长度大于200 mm时,套筒灌胶式锚固体系即可取得理想的锚固效果;粘砂夹片式和挤压式FRP筋材锚固体系的锚固性能不够稳定;带粘结护套的夹片式FRP筋锚固体系对表面经过处理的FRP筋材可取得较好的锚固效果。Developing the safe, economical and practical anchorage system is the foundation of applying the structure prestressed by the FRP tendons. On the basis of the tension and anchorage equipments of prestressed structures inland, it has been carried out that the experimental studies on such four FRP tendon anchorage systems as sleeve-glue pattern, wedged jaw pattern with burned-on-sand, extruded pattern with glue and wedged jaw pattern with sleeve. According to our research results, the following conclusions are drawn. When the length of sleeve is more than 200mm, the sleeve-glue pattern anchorage system will meet the anchorage needs. The anchorage performances of the systems of the wedged jaw pattern with bttmed-on-sand and the extruded pattern with glue are unsteady. The wedged jaw pattern system with sleeve is satisfactory when the surface of the FRP tendon has been pretreated.

关 键 词：FRP筋 锚固体系 预应力 

分 类 号：TU377[建筑科学—结构工程]