Impact of Asphalt Stabilization on Deformation Behavior of Reinforced Soil Embankment Model under Cyclic Loading

2014 ◽  
Vol 2 (4) ◽  
pp. 46 ◽  
Author(s):  
Saad Issa Sarsam ◽  
Aamal A. Alsaidi ◽  
Omar Mukhlef Alzoba
Keyword(s):  
Cyclic Loading ◽  
Deformation Behavior ◽  
Reinforced Soil

Model Research on the Deformation Behavior of Geogrid Supported by Rigid-Flexible Piles Under Cyclic Loading

2021 ◽  
pp. 1013-1021
Author(s):  
Kaifu Liu ◽  
Yonghao Cai ◽  
Yi Hu ◽  
Dazhi Wu ◽  
Zhenying Zhang
Keyword(s):  
Cyclic Loading ◽  
Deformation Behavior ◽  
Model Research

Cyclic Deformation and Buckling Behavior of Pipe With Local Metal Loss Subjected to Seismic Ground Motion

2011 ◽  
Author(s):  
Masaki Mitsuya ◽  
Hiroshi Yatabe
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Low Cycle Fatigue ◽  
Kinematic Hardening ◽  
Earthquake Resistance ◽  
Metal Loss ◽  
Cycle Fatigue ◽  
Longitudinal Length

Buried pipelines may be deformed due to earthquakes and also corrode despite corrosion control measures such as protective coatings and cathodic protection. In such cases, it is necessary to ensure the integrity of the corroded pipelines against earthquakes. This study developed a method to evaluate the earthquake resistance of corroded pipelines subjected to seismic ground motions. Axial cyclic loading experiments were carried out on line pipes subjected to seismic motion to clarify the cyclic deformation behavior until buckling occurs. The test pipes were machined so that each one would have a different degree of local metal loss. As the cyclic loading progressed, displacement shifted to the compression side due to the formation of a bulge. The pipe buckled after several cycles. To evaluate the earthquake resistance of different pipelines, with varying degrees of local metal loss, a finite-element analysis method was developed that simulates the cyclic deformation behavior. A combination of kinematic and isotropic hardening components was used to model the material properties. These components were obtained from small specimen tests that consisted of a monotonic tensile test and a low cycle fatigue test under a specific strain amplitude. This method enabled the successful prediction of the cyclic deformation behavior, including the number of cycles required for the buckling of pipes with varying degrees of metal loss. In addition, the effect of each dimension (depth, longitudinal length and circumferential width) of local metal loss on the cyclic buckling was studied. Furthermore, the kinematic hardening component was investigated for the different materials by the low cycle fatigue tests. The kinematic hardening components could be regarded as the same for all the materials when using this component as the material property for the finite-element analyses simulating the cyclic deformation behavior. This indicates that the cyclic deformation behavior of various line pipes can be evaluated only based on their respective tensile properties and common kinematic hardening component.

Deformation behavior of anisotropically overconsolidated clay under one-way cyclic loading

2020 ◽  
Vol 129 ◽  
pp. 105943
Author(s):  
Zhizhen Xu ◽  
Linyou Pan ◽  
Chuan Gu ◽  
Jun Wang ◽  
Yuanqiang Cai
Keyword(s):  
Cyclic Loading ◽  
Deformation Behavior ◽  
Overconsolidated Clay
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