Embed Size (px)
Citation preview
- 1 -
DIN 18800-4:2008-11 (E)
Steel structures - Part 4: Stability - Safety against buckling of shells
Contents Page
Foreword ..........................................................................................................................................................3
1 General ............................................................................................................................................41.1 Scope and field of application ......................................................................................................41.2 Normative references ....................................................................................................................41.3 Terms and definitions ....................................................................................................................51.4 Common notation ...........................................................................................................................51.5 Basic considerations .....................................................................................................................8
2 Procedure for analysis of safety against buckling .....................................................................8
3 Imperfections ................................................................................................................................12
4 Cylindrical shells of constant wall thickness ............................................................................154.1 Notation and conditions of support ...........................................................................................154.2 Ideal buckling stresses ................................................................................................................194.2.1 Axial compression .......................................................................................................................194.2.2 Hoop compression .......................................................................................................................224.2.3 Shear .............................................................................................................................................234.3 Actual buckling stresses .............................................................................................................244.4 Action-effects ...............................................................................................................................254.5 Stress combinations ....................................................................................................................274.5.1 Axial compression with coexistent hoop compression and shear .........................................274.5.2 Axial compression with coexistent hoop tension due to internal pressure ..........................29
5 Cylinders with courses of incremental wall thickness .............................................................305.1 Notation and conditions of support ...........................................................................................305.2 Design offset .................................................................................................................................315.3 Ideal buckling stresses ................................................................................................................325.3.1 Axial compression .......................................................................................................................325.3.2 Hoop compression .......................................................................................................................325.4 Actual buckling stresses .............................................................................................................355.5 Action-effects ...............................................................................................................................365.6 Stress combinations ....................................................................................................................375.6.1 Axial compression with coexistent hoop compression ...........................................................375.6.2 Axial compression with coexistent hoop tension due to internal pressure ..........................38
6 Conical shells of uniform wall thickness ...................................................................................386.1 Notation and conditions of support ...........................................................................................386.2 Ideal buckling stresses ................................................................................................................416.2.1 Equivalent cylinder ......................................................................................................................416.2.2 Meridional compression ..............................................................................................................426.2.3 Hoop compression .......................................................................................................................426.2.4 Shear .............................................................................................................................................436.3 Actual buckling stresses .............................................................................................................436.4 Action-effects ...............................................................................................................................446.5 Stress combinations ....................................................................................................................456.5.1 Meridional compression with coexistent hoop compression and shear ...............................456.5.2 Meridional compression with coexistent hoop tension due to internal pressure .................46
7 Spherical shells of uniform wall thickness ...............................................................................467.1 Notation and conditions of support ...........................................................................................46
- 2 -
7.2 Ideal buckling stresses ............................................................................................................... 497.3 Actual buckling stresses ............................................................................................................ 507.4 Action-effects ............................................................................................................................... 507.5 Stress combinations ................................................................................................................... 50
Bibliography .................................................................................................................................................. 51
