DESIGN OF STEEL STRUCTURES Norsk Standard（钢结构设计挪威人的标准）.pdfVIP

Design of Steel Structures N-004 Annex K Revision of section K.5.3 Grouted connection, 15 April 2012 DESIGN OF STEEL STRUCTURES ANNEX K SPECIAL DESIGN PROVISIONS FOR JACKETS NORSOK standard Page 151 of 314 Design of Steel Structures N-004 Annex K Revision of section K.5.3 Grouted connection, 15 April 2012 K.5.3 Grouted connection K.5.3.1 General Grouted pile connections shall be designed to satisfactorily transfer the design loads from the pile sleeve to the pile as shown in Figure K.5-1. The grout packer may be placed above or below the lower yoke plate as indicated in Figure K.5-2. The connection may be analysed by using a load model as shown in Figure K.5-3. The following failure modes of grouted pile to sleeve connections need to be considered: • Failure of grout to pile interface shear due to axial load and torsional moment (ULS and ALS). • Failure of the grout due to compressive stresses at the lower end of the grout due to bending moment and shear in the pile (ULS and ALS). • Fatigue of the grouted connection for alternating interface shear stress due to axial load and bending moment in the pile (FLS). • Fatigue of the grout due to compression and shear stresses at the lower end from bending moment and shear in the pile (FLS). Pile Jacket Leg Upper Yoke plate Pile sleeve Shear Plate Lower Yoke plate