Cast-in Peikko HPM-L anchor bolts exposed to fatigue loading (Part 2)

Figure: Peikko

Fig. 5.1: Fatigue behavior of HPM-L anchor bolts in tension – influence of concrete condition (cracked or uncracked)

Figure: Peikko

Fig. 5.2: Fatigue behavior of HPM-L anchor bolts in tension – influence of failure mode

Figure: Peikko

Fig. 5.3: Fatigue behavior of HPM-L anchor bolts in shear – influence of annular gap filling

Figure: Peikko

Fig. 5.4: Fatigue behavior of HPM-L anchor bolts in shear – influence of loading (pulsating or alternating)

Figure: Peikko

Fig. 5.5: Fatigue behavior of HPM-L anchor bolts in shear – influence of concrete condition (cracked or uncracked)

Figure: Peikko

Fig. 5.6: Analysis of tensile test results and 5% quantile line

Figure: Peikko

Fig. 5.7: Analysis of shear test results and 5% quantile line

Figure: Peikko

Table 5.1: Test program for HPM-L anchor bolts [11]

Figure: Peikko

Table 5.2: Characteristic values of fatigue resistance in tension

Figure: Peikko

Table 5.3: Characteristic values of fatigue resistance in shear

Figure: Peikko

The first part of this article published in the BFT 12/2024 issue dealt with fasteners exposed to fatigue loading and explained how to determine their characteristic fatigue resistance. The second part presents the outcomes of related tests and analyses.

5 Tests and analyses

5.1 General

The tests summarized in Table 5.1 were conducted to investigate the fatigue behavior of Peikko HPM-L anchor bolts. In the tests, 16 mm anchor bolts made of B500B steel were used. Test specimens made of low-strength concrete of class C20/25 in uncracked and cracked condition (∆w = 0.3 mm) were used as anchorage specimens. Anchors were installed perpendicular to the concrete surface. All fatigue tests were conducted as single-stage fatigue tests. The tests under pulsating tensile and shear loads were performed with a low minimum load (F_u = 1 kN) and varying maximum...