Blar i Institutt for konstruksjonsteknikk på tidsskrift "Marine Structures"
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Analysis of fatigue test data of retrieved mooring chain links subject to pitting corrosion
(Peer reviewed; Journal article, 2021)Fatigue is one of the main failure mechanisms of catenary type mooring lines. Fatigue resistance is affected by a large number of factors. In this paper, the effect of pitting corrosion on the fatigue resistance of mooring ... -
Combined three-point bending and axial tension of pressurised and unpressurised X65 offshore steel pipes – Experiments and simulations
(Journal article; Peer reviewed, 2018)Subsea pipelines are occasionally struck and hooked by objects such as anchors or trawl gear. The initial denting, followed by potential hooking and displacement of the pipeline, give rise to a complex load and deformation ... -
Cyclic behavior and strain energy-based fatigue damage analysis of mooring chains high strength steel
(Peer reviewed; Journal article, 2020)This study investigates the low-cycle fatigue behavior of mooring chains high-strength steel grade R4 under different strain amplitudes and strain ratios at room temperature. A fatigue test program has been carried out on ... -
Effect of long periods of corrosion on the fatigue lifetime of offshore mooring chain steel
(Peer reviewed; Journal article, 2022)R4-grade mooring chain steel specimens were subjected to alternating phases of saltwater corrosion and air fatigue to replicate seasonal load variations on chains in service. No significant difference in fatigue lifetimes ... -
Hydrodynamic interaction of floating bridge pontoons and its effect on the bridge dynamic responses
(Peer reviewed; Journal article, 2022)As pontoons of floating bridges respond to the dynamic actions of the wind and wave loading, additional forces are imposed on the pontoons due to the hydrodynamic interaction of these floating bodies. The wave forces on a ... -
Long-term extreme response analysis of a long-span pontoon bridge
(Journal article; Peer reviewed, 2018)For the assessment of extreme load effects needed in design of marine structures, a full long-term analysis is recognized as the most accurate approach. However, due to the very large number of structural response analyses ... -
Low-velocity impact behaviour and failure of stiffened steel plates
(Journal article; Peer reviewed, 2017)The behaviour and failure of stiffened steel plates subjected to transverse loading by an indenter is studied in this paper. Low-velocity dynamic and quasi-static tests of stiffened plates with geometry adopted from a ... -
Quasi-static and dynamic indentation of offshore pipelines with and without multi-layer polymeric coating
(Journal article; Peer reviewed, 2018)Offshore pipelines are occasionally subjected to accidental impact loads from trawl gear or anchors, which may damage the pipe. In this study, a series of indentation experiments carried out on offshore steel pipes covered ... -
Seismic response of subsea structures on caissons and mudmats due to liquefaction
(Peer reviewed; Journal article, 2021)This paper presents a numerical study to investigate the seismic behavior of mudmat and caisson foundations supporting subsea structures, such as manifolds, in liquefiable sand. In seismic areas, substantial earthquake ... -
Seismic response of subsea structures on caissons and mudmats due to liquefaction
(Peer reviewed; Journal article, 2021)This paper presents a numerical study to investigate the seismic behavior of mudmat and caisson foundations supporting subsea structures, such as manifolds, in liquefiable sand. In seismic areas, substantial earthquake ... -
Shear lag effects on global bending moments in a long-span pontoon bridge under self-weight, traffic and environmental loads
(Peer reviewed; Journal article, 2023)The present paper deals with a systematic study of the shear lag effect on the bending moment distribution in girders of representative pontoon-type floating bridges (PTFBs). Comparative and parametric studies for ... -
Time domain simulations of wind- and wave-induced load effects on a three-span suspension bridge with two floating pylons
(Journal article, 2018)The construction of a three-span suspension bridge with two floating pylons is currently being considered for crossing the 5-km-wide and 550-m-deep Bjørnafjorden in Norway. The bridge design represents a novel concept that ...