合成スラブ用デッキプレートの溝に埋め込まれたスタッドコネクタの押抜き試験

概要

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This paper describes the rigidity and strength of stud connectors based on the results of tests with 62 pushout pieces. The deckplate tested is for application to composite slabs and has a Lock rib in the center of its rib section. Since it is practical to weld the stud connectors by avoiding the Lock rib, we have arranged the stud connectors as in Figure 6. Among the considerable information we have received from the test results, the following 3 points are of particular significance. 1. In Figure 9, we have observed various failure modes. As shown in Figure 13-(a), the characteristics observed in the first half of the load-slip relationship of rib punching failure, which accompanies deckplate deformation, are the same as those resulting from concrete pullour failure. 2. The load-slip relationship of concrete pullout failure, and the first half of rib punching failure, are given in formula (7). 3. The opinion expressed by N. M. Hawkins, that strength is proportionate to pullout surface area, is made even more applicable by subtracting the skirt of pullout surface from projected pullout surface area. The coordinate axis shown at the bottom of Figure 16 represents effective projected pullout surface area. Test results show that, effective projected pullout surface area may be given by projected pullout surface area of the hypothetical section shown in Figure 18.
社団法人日本建築学会の論文
1987-01-30