| 種別 | Paper |
| 主題 | CRACKING STRENGTH AND DEFORMATION OF PARTIALLY PRESTRESSED CONCRETE MEMBERS WITH ARBITRARY CROSS SECTIONS |
| 副題 | |
| 筆頭著者 | Makoto KAWAKAMI |
| 連名者1 | Hiroshi TOKUDA |
| 連名者2 | Toshikazu SHIMIZU |
| 連名者3 | |
| 連名者4 | |
| 連名者5 | |
| キーワード | |
| 巻 | 10 |
| 号 | 3 |
| 先頭ページ | 715 |
| 末尾ページ | 720 |
| 年度 | 1988 |
| 要旨 | 1. INTRODUCTION Recently the use of partially prestressed concrete has gradually increased. Partial prestressing offers better control of cracking, deflection and camber, and higher ductility, energy absorption and cost saving than fully reinforced concrete. In order to perform rational design of partially prestressed concrete members, simple and systematic stress analysis has been demanded. In this paper, cracking strength and deformation as the important structural index of limit states of a partially prestressed concrete member with arbitrary concrete section considering creep and shrinkage of concrete and relaxation of prestressing steel were analysed. The procedure of the analysis was demonstrated by numerical example for multi-hollow slab bridge. 4. CONCLUSIONS The cracking strength and deformation considering to time dependent losses were analysed in this study. The results obtained by this study are summarized as follows: 1) Cracking strength and deflection of partially prestressed concrete with arbitrary cross section were analysed and the computer program was developed. 2) Prestress loss at arbitrary time was easily calculated, since aging coefficient was used in this analysis. 3) Initial prestress level designed for partially prestressed concrete can be evaluated by the analytical results. |
| PDFファイル名 | 010-01-2127.pdf |