F14T級高力ボルトを用いた1000N級鋼(950N/mm^2鋼)摩擦接合部のすべり耐力 : 1000N級鋼の建築構造物への適用性

日本建築学会

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  • SLIP STRENGTH ON FRICTION JOINT OF 1000N CLASS ULTRA HIGH STRENGTH STEEL WITH Fl4T CLASS HIGH STRENGTH BOLTS : Investigation on application of 1000N class ultra high strength steel for buildings

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In this paper, the slip strength of friction joint with 1000Mpa class ultra high strength steel (tensile strength : over 950MPa) and F 14T class high strength bolts is reported. Standard slip tests, slip tests for multiple bolts and bending test for beam joint were performed to evaluate slip coefficients for these friction joints and the influence of several parameters (the surface treatments, the work condition of shot-blasted surface, the bolt clamping force etc.). To ensure the slip coefficients usually exceed the minimum value 0.45 required by the AIJ Specifications for friction joints with 1000MPa class steel, the following surface treatments are used. 1) Rusted surface, 2) shot-blasted surfaces using the abrasive of which hardness over 715Hv, 3) shot-blasted surfaces treated with compressed air.

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