Design Guide for Bridges for Service Life (2013) / Chapter Skim
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Pages 572-577
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From page 572... ...
570 This appendix provides steps that could lead to development of design aid for piles subjected to axial load and lateral movement. The principal steps are explained and are customized for development of design aids for 50 ksi steel H-piles.
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From page 573... ...
571 Appendix C
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From page 574... ...
572 DESiGN GUiDE FOR BRiDGES FOR SERviCE LiFE In Equation C.3, ns and ni are the number of small and large amplitude strain cycles due to temperature changes during the service life of the bridge, respectively, and Nfs and Nfl are the total number of cycles to failure for the corresponding small and large amplitude strain cycles, respectively. According to Dicleli and Albhaisi (2004)
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From page 575... ...
573 Appendix C DESIGN OF PILES FOR FATIGUE AND STABILITY Based on the calculated maximum large strain amplitude of eal = 0.002967, the maximum cyclic curvature amplitude Yf at fatigue failure of the pile is expressed by Equation C.10: ε ψ = d 2 f al p (C.10)
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From page 576... ...
574 DESiGN GUiDE FOR BRiDGES FOR SERviCE LiFE In this figure, the ultimate response Pu is estimated as shown by Equation C.11: P C d9u u p= (C.11) where Cu is the undrained shear strength of the clay, and dp is the pile width.
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From page 577... ...
575 Appendix C DESiGN OF piLES FOR FATiGUE AND STABiLiTy C.2.3 Results of the Analyses Using the described method and by performing pushover analyses, the maximum displacement that steel H-piles with a specified minimum yield strength of 50 ksi can accommodate has been estimated and is shown in the Figures C.3 and C.4.
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