Fatigue Strength of Anchor Bolts

by Karl H. Frank, (A.M.ASCE), Asst. Prof. of Civ. Engrg.; The Univ. of Texas at Austin, Austin, Tex.,

Serial Information: Journal of the Structural Division, 1980, Vol. 106, Issue 6, Pg. 1279-1293

Document Type: Journal Paper


The results of an experimental study of the fatigue strength of anchor bolts in tension and bending are presented. The influence of bolt diameter, steel strength, thread size, and method of forming the threads is examined. An analysis of the results indicated that these variables did not significantly influence fatigue performance. The fatigue design strength of single nut anchor bolts was found to be adequately represented by the current bridge and building fatigue specification Category E. Tightened double nutted anchor bolts in tension and bending produced fatigue lines comparable to Category C of the fatigue specifications.

Subject Headings: Fatigue (material) | Anchors | Bolts | Flexural strength | Ultimate strength | Tension members | Bridge design | Building design

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