| 種別 | paper |
| 主題 | Analysis of a Prestressed Concrete Plates with Partially Bonded Tendons |
| 副題 | |
| 筆頭著者 | Abdul Rahman QUTAIT （Nagoya University） |
| 連名者1 | Tada-aki TANABE （Nagoya University） |
| 連名者2 | |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 11 |
| 号 | 2 |
| 先頭ページ | 655 |
| 末尾ページ | 660 |
| 年度 | 1989 |
| 要旨 | INTRODUCTION Some recent developments in the construction technique of unbonded post-tensioning members have given impetus to its use in the construction work. It has also been reported that the use of tendons coated with a bituminous rust inhibitor,and wrapped with paper,can help in producing low cost P.C. elements. The performance of the resulting unbonded P.C. elements can be judged,if it is compared with that of the traditional bonded P.C. elements. Figure(1,1)shows that the bonded one doesn‘t deflect as much under a specific load as the unbonded one does. Behavior of partially bonded members lies between the two extreme cases. Although there are differences among bonded , partially bonded, and unbonded members,conventional methods of analysis usually treat the different types of structures in the same manner. This is due to the complications and difficulties which arise in the calculation of the change of tendon forces in the steel. In this study,by combining the standard plate element for concrete portion and modified line element of steel tendons which span from one anchorage to the other,an analysis method is developed for partially bonded prestressed concrete structures,which enables to obtain the behavior of plate considering the bondage factor in the analysis. SUMMARY AND CONCLUSION The analysis method of partially bonded prestressed concrete plate structures is developed using the F.E.M formulation. The bond condition between steel and concrete is expressed by the bond coefficient and compatibility of steel strain and concrete strain is maintained along the length between two anchorages of the steel even though the relative slip is allowed. Using the developed method,several numerical examples are calculated. They showed the results which reflects clearly the bond effect,which is considered to be useful to advanced design of prestressed concrete structures. |
| PDFファイル名 | 011-01-2110.pdf |