Permanent deformation analysis of HMA mixtures using simple performance tests

2008 ◽  
pp. 613-622
Keyword(s):  
Permanent Deformation ◽  
Deformation Analysis ◽  
Performance Tests

Permanent deformation analysis of asphalt mixtures using soft computing techniques

2011 ◽  
Vol 38 (5) ◽  
pp. 6081-6100 ◽  
Author(s):  
Mohammad Reza Mirzahosseini ◽  
Alireza Aghaeifar ◽  
Amir Hossein Alavi ◽  
Amir Hossein Gandomi ◽  
Reza Seyednour
Keyword(s):  
Soft Computing ◽  
Permanent Deformation ◽  
Asphalt Mixtures ◽  
Deformation Analysis ◽  
Soft Computing Techniques

Determination of Elastic and Plastic Subgrade Soil Parameters for Asphalt Cracking and Rutting Prediction

1996 ◽  
Vol 1540 (1) ◽  
pp. 97-104 ◽  
Author(s):  
G. Behzadi ◽  
W. O. Yandell
Keyword(s):  
Moisture Content ◽  
Constitutive Model ◽  
Permanent Deformation ◽  
Triaxial Tests ◽  
Deformation Analysis ◽  
Soil Parameters ◽  
Dry Density ◽  
Silty Clay ◽  
Exponential Relationship ◽  
Deviator Stress

A preliminary step in the prediction of rutting and cracking in a number of accelerated loading facility trials in Australia is presented. The results of laboratory repeated load triaxial tests were used to characterize the residual and resilient deformation of a silty clay subgrade material. The analysis of permanent deformation indicated that the well-known model ∈p = INS can be used to estimate the accumulated strain at any number of loading cycles. The parameter S (the slope of the line in a plot of log ∈p –log N) was found to be independent of stress and density, but very small increases were observed as moisture content increased. The parameter I (the intercept in a plot of log ∈p –log N) was found to be most sensitive to deviator stress. The test results also indicated that I increased with increasing moisture content and decreased as dry density increased. The analysis revealed that an exponential relationship existed between I and deviator stress. This relationship was used to develop a constitutive model for silty clay based on the previously mentioned well-known model. The constitutive model obtained would be able to predict the plastic strain under any number of loads at any specified stress level. Resilient deformation analysis has shown that resilient modulus initially decreased rapidly with increasing deviator stress and then increased slightly or was nearly constant. The elastic and plastic parameters will be used as input for performance predictors such as VESYS and Mechano-Lattice.

scholarly journals STUDY ON PERMANENT DEFORMATION ANALYSIS OF BASE COURSE SURFACE UNDER CONCRERTE PAVEMENT

2001 ◽  
Vol 6 ◽  
pp. 155-166
Author(s):  
Yasushi TAKEUCHI ◽  
Masashi KOYANAGAWA ◽  
Tatsuo NISHIZAWA ◽  
Katsura ENDO ◽  
Kazuyuki KUBO
Keyword(s):  
Permanent Deformation ◽  
Deformation Analysis ◽  
Base Course

The Foundation Liquefaction and Permanent Deformation Analysis of Diversion Dike for Nuclear Power Plant

2011 ◽  
Vol 90-93 ◽  
pp. 1865-1869 ◽  
Author(s):  
Jie Zhao ◽  
Yang Zheng ◽  
Gui Xuan Wang
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Dynamic Analysis ◽  
Effective Stress ◽  
Nuclear Power ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Permanent Deformation ◽  
Deformation Analysis ◽  
Response Analysis

In seismic response analysis, total stress method is adopted mostly, but variation of the pore water pressure and the development process of the liquefaction are not considered in this method. Based on the dynamic analysis of two-dimensional effective stress proposed by Zhu-jiang Shen, combined with dynamic consolidation theory of Biot, the foundation liquefaction analysis of the diversion dike for nuclear power plant is performed by using effective stress dynamic analysis program, the liquefied range is given, as well as the permanent deformation. The obtained law can provide theoretical guidance for the similar project.

scholarly journals An improved method of Newmark analysis for mapping hazards of coseismic landslides

2019 ◽  
Author(s):  
Mingdong Zang ◽  
Shengwen Qi ◽  
Zhuping Sheng ◽  
Blanca S. Zamora ◽  
Yu Zou
Keyword(s):  
Permanent Deformation ◽  
Regional Analysis ◽  
Deformation Analysis ◽  
Data Sets ◽  
Infrastructure Development ◽  
Permanent Displacement ◽  
Ground Shaking ◽  
Coseismic Landslides ◽  
Stability Of Slopes ◽  
Inexact Reasoning

Abstract. Coseismic landslides have been responsible for destroyed buildings and structures, dislocated roads and bridges, cut off of pipelines and lifelines, and tens of thousands of deaths. Newmark's method is widely applied to assess the permanent displacement along a potential slide surface to determine the coseismic responses of the slope. The Mw 6.1 (USGS) earthquake in Ludian, Yunnan Province, China in 2014 has caused widespread landslides and provided the ideal data sets to conduct a regional analysis of coseismic stability of slopes. The data sets include the topography, shear strength, and ground shaking of the study area. All of these data sets are digitized and rasterized at 30 m grid spacing using ArcGIS and combined in a dynamic slope model based on Newmark permanent-deformation analysis. The application of Barton model was then applied in the permanent-deformation analysis. According to a method of inexact reasoning, comparisons are made between the predicted displacements and a comprehensive inventory of landslides triggered by the Ludian earthquake to map the spatial variability in certainty factors. A coseismic landslide hazard map is then produced based on the spatial distribution of the values of certainty factors. Such map can be applied to predict the hazard zone of the region and provide guidelines for making decisions regarding infrastructure development and post-earthquake reconstruction.

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