| 基于体外钢束-混凝土协作关系的体外钢束应力增量分析方法 |
| |
| 引用本文： | 何雄君,余晓燕,叶文华,马木欣.基于体外钢束-混凝土协作关系的体外钢束应力增量分析方法[J].武汉理工大学学报(交通科学与工程版),2008,32(5). |
| |
| 作者姓名： | 何雄君 余晓燕 叶文华 马木欣 |
| |
| 作者单位： | [1]武汉理工大学交通学院,武汉430063 [2]中交第二公路勘察设计研究院,武汉430056 [3]武汉中咨路桥设计研究院有限公司,武汉430050 |
| |
| 基金项目： | 鄂交科教项目资助(批准号:[2006]392) |
| |
| 摘 要： | 提出了基于体外钢束-混凝土协作关系的体外钢束应力增量分析方法.针对典型断面构件中相互独立的体外钢束与混凝土一起工作所需满足的关系,推导了钢混协同工作的主从关系式.这种关系可由非线性有限元的求解过程自动实现,即在进行不平衡力的迭代时,引入预应力钢索与混凝土的变形协调关系,进而可求出体外束随结构变形而产生的伸长量及应力增量.算例表明,所提出的方法可有效地分析体外束应力增量、模拟体外索预应力桥梁的结构行为.
|
| 关 键 词： | 桥梁 体外预应力 体外钢束-混凝土协作关系 应力增量 |
Stress Increment Analysis of the External Prestressing Cables Based on Coordinating Relations Between External Prestressing Cables And Concrete |
| |
| Institution: | Transportation School;Wuhan University of Technology;Wuhan 430063;The Second Highway Reconnaissance and Design Institute of The Communications Ministry;Wuhan 430056;China Highway Engineering Consultant and Supervision Corporation Wuhan Company;Wuhan 430050 |
| |
| Abstract: | In order to find out a method with high precision and fitness for calculation on external prestressing stress increment,the paper has proposed a stress increment analysis method based on coordinating relations between the external prestressing cables and concrete.Aiming at the co-work condition of the independent external prestressing cables and concrete in a typical component section,the coordinating relations between them are induced.The relations can be carried out automatically during the process of sol... |
| |
| Keywords: | bridges external tendon coordinating relations between external prestressing cables and concrete stress increment |
| 本文献已被 CNKI 维普 等数据库收录！ |
