VI
Contents
5.3.3 5.3.4 5.3.5 5.3.5.1 5.3.5.2 5.3.5.3 5.3.5.4 5.3.5.5 5.3.5.6 5.3.5.7 5.3.5.8 5.4 5.4.1 5.4.2
Steel failure with lever arm................................................................. Pry-out failure..................................................................................... Concrete edge failure.......................................................................... Characteristic resistance of a single fastener ...................................... Effect of spacing ................................................................................. Effect of edge distances parallel to the load direction........................ Effect of member thickness ................................................................ Effect of the eccentricity of the load................................................... Effect of load direction ....................................................................... Effect of the position of the fastening................................................. Special case: narrow thin member...................................................... Combined tension and shear load ....................................................... Steel failure decisive for tension and shear load................................. Other modes of failure decisive ..........................................................
64 65 68 69 70 73 73 74 76 77 77 80 80 81
6
Verification of post-installed fasteners (chemical systems) for the ultimate limit state based on the theory of elasticity.......... General................................................................................................ Tension load........................................................................................ Required verifications......................................................................... Steel failure......................................................................................... Combined pull-out and concrete failure ............................................. Characteristic resistance of a single fastener ...................................... Edge distance and spacing.................................................................. Effect of closely spaced fasteners....................................................... Effect of heavy reinforcement (shell spalling) ................................... Effect of the eccentricity of the load................................................... Special case: three or four edges with ci < ccr,Np ............................... Concrete cone failure.......................................................................... Splitting .............................................................................................. Shear load ........................................................................................... Required verifications......................................................................... Steel failure due to shear load without and with lever arm ................ Concrete pry-out ................................................................................. Concrete edge failure.......................................................................... Combined tension and shear...............................................................
83 83 83 83 84 84 86 86 87 88 89 89 89 89 89 89 90 90 90 90
6.1 6.2 6.2.1 6.2.2 6.2.3 6.2.3.1 6.2.3.2 6.2.3.3 6.2.3.4 6.2.3.5 6.2.3.6 6.2.4 6.2.5 6.3 6.3.1 6.3.2 6.3.3 6.3.4 6.4 7
7.1 7.2 7.2.1 7.2.2 7.3
Verification of ultimate limit state by elastic analysis for headed fasteners ........................................................................ General................................................................................................ Tension forces in the supplementary reinforcement........................... Detailing of supplementary reinforcement in case of tension loaded fastenings ............................................................................................ Detailing of supplementary reinforcement in case of shear loaded fastenings ............................................................................................ Tension load........................................................................................
91 91 91 91 92 92