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
10
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


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