種別 | paper |
主題 | An Experimental Study on Joint Strength of Spliced Bars for Precast Concrete Structures with Double Layer Rein-forcements |
副題 | |
筆頭著者 | Rodolfo Yanez（University of Tsukuba） |
連名者1 | Akitoshi Hatahira（University of Tsukuba） |
連名者2 | Teruaki Yamaguchi（Kabuki Construction） |
連名者3 | Hiroshi Imai（University of Tsukuba） |
連名者4 | |
連名者5 | |
キーワード | |
巻 | 16 |
号 | 2 |
先頭ページ | 841 |
末尾ページ | 846 |
年度 | 1994 |
要旨 | 1. INTRODUCTION To study the effect of the proposed bar joint on the joint strength of specimens with double layer reinforcement, another series of pullout tests was carried out. Many problems have to be solved to joint double layer main bars with lapping splices. One of the practical solutions is to joint the half of bars at the same section and to joint the other half of bars at different section. A number of combinations of bars (combinations among spliced bars and continuous bars) which are possible to use at the construction sites are selected. The joint strength of these combinations of jointed and continuous main bars are herein studied. 6. CONCLUSIONS The results of the present chapter are summarized as follows: 1)No great difference on the joint strength for the specimens with a single layer reinforcement of jointed bars and specimens with double layer reinforcement is recognized. 2)The maximum load acting per bar among the double layer reinforcement can be considered for the calculation of the bond strength. 3)No remarkable difference on the joint strengths of the bars placed at the first and second layers is recognized. 4)The Orangun-Jirsa-Breen's equation gives a good accuracy for the estimation of the bond strength of bars with lapping splices. |
PDFファイル名 | 016-01-2140.pdf |