Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Structural Engineering and Mechanics Volume 47, Number 3, August10 2013 , pages 383-399 DOI: https://doi.org/10.12989/sem.2013.47.3.383 |
|
|
|
Tensile behavior of new 2,200 MPa and 2,400 MPa strands according to various types of mono anchorage |
||
Jin Kook Kim, Taek Ryong Seong, Kyung Pil Jang and Seung Hee Kwon
|
||
| Abstract | ||
| High-strength strands are widely used as a key structural element in cable-stayed bridges and prestressed concrete structures. Conventional strands for stay cable and tendons in prestressed concrete structures are ϕ15.7mm coated seven-wire strands and ϕ15.2mm uncoated seven-wire strands, respectively, but the ultimate strengths of both strands are 1860MPa. The objective of this paper is to investigate the tensile behavior of a newly developed ϕ15.7mm 2,200 MPa coated strand and a ϕ15.2mm 2,400 MPa uncoated strand according to various types of mono anchorages and to propose appropriate anchorages for both strands. Finite element analyses were initially performed to find how the geometry of the anchor head affects the interaction among the anchor head, the wedge and the strand and to find how it affects the stress distributions in both parts. Tensile tests for the new strands were carried out with seven different types of mono anchorages. The test results were compared to each other and to the results obtained from the tensile tests with a grip condition. From the analysis and the test results, desirable mono anchorages for the new strands are suggested. | ||
| Key Words | ||
| high-strength strand; 2,200 MPa; 2,400 MPa; tensile test; mono anchorage; pre-stressed concrete; cable-stayed bridge | ||
| Address | ||
| Jin Kook Kim, Taek Ryong Seong : Energy Infrastructure Research Department, Steel Structure Research Division, Research Institute of Industrial Science and Technology, POSCO Global R&D Center, Incheon, Republic of Korea Kyung Pil Jang and Seung Hee Kwon : Department of Civil and Environmental Engineering, Myongji University, Yongin, Republic of Korea | ||