Experimental investigation of axial load on low cycle fatigue performance of steel H-piles in integral bridges

2017-08-28
In this study, the effect of axial load on the low cycle fatigue performance of integral bridge steel H–piles is investigated. Review of literature revealed that there is no experimental research data on the effect of axial load on the low cycle fatigue performance of integral bridge steel H-piles. For this purpose, experimental studies on full scale steel H-pile specimens are conducted to simulate cyclic behavior of steel Hpiles under thermal effects in integral bridges by considering the effect of axial load combined with large amplitude strain cycles with various amplitude levels. Using experimental test results, the effect of axial load level is investigated on the low cycle fatigue performance of integral bridge steel H–piles. It is observed that the effect of axial load on the low cycle fatigue performance of integral bridge steel H-piles are so important to reduce the bending stresses in the steel H-piles and also increase the lowcycle fatigue performance of steel H-piles at the abutments of integral bridges at the moderate strain amplitudes. Moreover, it is observed that at large strain amplitudes the effect of local buckling should be considered more than the effect of axial load on the low cycle fatigue life of steel H piles at the abutments of integral bridges.

Suggestions

Experimental investigation of the effects of tip-injection on the aerodynamic loads and wake characteristics of a model horizontal axis wind turbine rotor
Abdulrahim, Anas; Uzol, Oğuz; Department of Aerospace Engineering (2014)
In this study, tip injection is implemented on a model Horizontal Axis Wind Turbine (HAWT) rotor to investigate the power and thrust coefficient variations as well as the wake characteristics. The model wind turbine has a 0.95 m diameter 3-bladed rotor with non-linearly twisted and tapered blades that has NREL S826 profile. The nacelle, hub and the blades are specifically designed to allow pressurized air to pass through and get injected from the tips while the rotor is rotating. The experiments are perform...
Analytical formulation of maximum length limits of integral bridges on cohesive soils
Dicleli, Murat (Canadian Science Publishing, 2005-08-01)
This paper presents an analytical approach for predicting the length limits of integral bridges built on cohesive soils based on the flexural strength of the abutments and the low cycle fatigue performance of the steel H-piles at the abutments under cyclic thermal loading. First, H-piles that can accommodate large inelastic deformations are determined considering their local buckling instability. Then, a damage model is used to determine the maximum cyclic deformations that such piles can sustain. Next, non...
Laboratory investigation of hydraulic efficiency of transverse grates in roads
Özbey, Cumhur; Tiğrek, Şahnaz; Department of Civil Engineering (2015)
In this study, hydraulic efficiency of transverse grated inlet systems to be used in small roads is experimentally investigated. For this purpose, an existing experimental setup in the Hydromechanics Laboratory of METU is utilized. Three sets of experiments are conducted in order to examine the relationship between the total flow rate and the grate efficiency with respect to several parameters. In the first set, the interdependence of the void ratio and grate efficiency is investigated. In the second set of...
Experimental Investigation on the Low Cycle Fatigue Life of Piles
Karalar, Memduh; Dicleli, Murat (2018-07-13)
In this study, the low cycle fatigue tests are conducted to investigate the fatigue life of steel H-piles subjected to thermal induced cyclic strains/displacements. Review of literature revealed that there are few experimental research data on the low cycle fatigue performance of integral bridge steel H-piles. For this purpose, experimental studies on full scale steel H-pile specimens are conducted to simulate cyclic behavior of steel H-piles under thermal effects in integral bridges by considering the effe...
Experimental investigation on the low cycle fatigue life of piles
Dicleli, Murat (2018-07-13)
In this study, the low cycle fatigue tests are conducted to investigate the fatigue life of steel H-piles subjected to thermal induced cyclic strains/displacements. Review of literature revealed that there are few experimental research data on the low cycle fatigue performance of integral bridge steel H-piles. For this purpose, experimental studies on full scale steel H-pile specimens are conducted to simulate cyclic behavior of steel H-piles under thermal effects in integral bridges by considering the effe...
Citation Formats
M. Dicleli, “Experimental investigation of axial load on low cycle fatigue performance of steel H-piles in integral bridges,” Ilsan(Seoul), Korea, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/78506.