![]() ![]() And here is the problem - if we take 2) formula with values from envelope diagram - we doesn't get maximum (minumum) value of S_flow, because we need to maximize abs value of (N_2-N_1), not N_2 or N_1 separately. What is the problem? In FEM soft for Live load we can get envelope diagram (min and max force in every section). N_1 = σ_c1 * A_c+σ_r1 * A_r - summary force in slab on left end of slab segmentġ) formula is pretty good, but we can use it only for section with elastic behaviour (we can't find influence of primary part of creep or shrinkage)Ģ) formula is more accurate, we can use it for all situations, but we have problems with live load N_2 = σ_c2 * A_c+σ_r2 * A_r - summary force in slab on right end of slab segment My main question is - how we should do step #1 in right way? ![]() Divide beam on short segments, integrate shear flow diagram on segment - find shear force for segment, divide it on limit forceĪnd get the number of struts for segment - countinue. Find diagram of Shear flow (between steel and concrete parts)ģ. How it should be done? Was I right in my suggestions? And so on.ĭesign process for shear studs consists from 3 steps:ġ. ![]() I'll explain my way of thoughts, hope you help me with critics and advices. Somehow I've managed to do this, but now I have several questions about this stuff. My job was check ULS and SLS for main girders and design shear studs map. Our last project - 4-span continuous overpass with composite section (two box-shaped main girders and monolitic RC slab). ![]()
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