湖南大学学报（自然科学版）2016，Vol.43Issue(5)：61-69,9.
斜拉桥单向预应力体系索塔锚固区足尺模型试验研究∗
Full-scale Model Test of Pylon Anchorage Zone with One-way Prestressing Tendons in Cable-stayed Bridge
摘要
Abstract
In order to study the mechanism of new one-way pre-stressed tendons applied to cable-pylon anchorage zone,as well as to clarify the actual stress distribution of the tendons,a full-scale model test and finite element analysis were conducted.As the construction background,Xij iang River Bridge of Guangzhou-Zhongshan-Jiangmen highway was considered.To simulate the large-tonnage inclined load of the cable,four short parallel wire cables and a reaction beam were designed and manufactured.Strains, displacements,and cracks of the structure were measured.The predictions by the finite element analysis agreed well with the test results.The linear strain distributions of the structure were measured even at 1 . 2 times of designed load,and cracks did not occur in the main load-resisting members.In addition,the safety coefficient 2.04 was estimated to prevent cracks,and enough prestress reserve was provided by the one-way pre-stressed tendons placed in the longitudinal direction wall.关键词
斜拉桥/预应力混凝土/试验研究/索塔锚固区/单向预应力/有限元分析Key words
cable-stayed bridge/prestressed concredte/experiments/pylon anchorage zone/one-way prestressing tendons/FEA分类
建筑与水利引用本文复制引用
崔楠楠,贾布裕,余晓琳,麦梓浩,杨铮,颜全胜..斜拉桥单向预应力体系索塔锚固区足尺模型试验研究∗[J].湖南大学学报（自然科学版）,2016,43(5):61-69,9.基金项目
国家自然科学基金资助项目(51478193,51208208),National Nature Science Foundation of China(51478193,51208208) （51478193,51208208）
中国博士后科学基金资助项目(2013M542174) （2013M542174）
中央高校基本科研业务费专项资金资助项目(2014ZZ0019) （2014ZZ0019）
