Cast-in Peikko HPM-L anchor bolts exposed to fatigue loading (Part 1)

Figure: Peikko

Fig. 2.1: Relevant failure modes for fasteners exposed to fatigue loading according to [12], [13]

Figure: Peikko

Figure Peikko

Table 2.1 Required verifications for anchors in tension according to EN 1992-4 [1]

Figure Peikko

Figure: Peikko

Table 2.2 Required verifications for anchors in shear according to EN 1992-4 [1]

Figure: Peikko

Fig. 3.1: Dimensions of HPM L anchor bolts ([3], [4], [5])

Figure: Peikko

Fig. 3.2: General installation of the HPM-L anchor bolt in concrete defining the length, embedment depth, and fastening depth ([3], [4], [5])

Figure: Peikko

Fig. 3.3: Clamping
sleeve ([5])

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Fig. 3.4 Specially designed washer with lateral hole and grouting mortar ([5])

Figure: Peikko

Fig. 4.1: Schematic progression of the fatigue curve: a) method A and b) method C

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Fig. 4.1: Schematic progression of the fatigue curve: a) method A and b) method C

Figure: Peikko

Fig. 4.2: Example of test assessment according to method C

Figure: Peikko

The first part of this article discusses fasteners exposed to fatigue loading and explains how to determine their characteristic fatigue resistance. Part 2 will present the outcomes of related tests and analyses and is scheduled for publication in the next BFT issue.

1 Introduction

Anchors and embedded parts such as anchor channels and headed anchor bolts are frequently used in the construction industry to transfer loads into concrete components. In conventional reinforced concrete construction, such fasteners are primarily exposed to static or quasi-static loading. However, applications in which cyclic loads must be considered are becoming increasingly important owing to more and more slender structures and the use of state-of-the-art equipment and machinery. EN 1992-4 [1] defines typical fields of use, which include fasteners for elevators, cranes, crane...