Influence of Heavy Axle Load on Dynamic Response of Semi-Rigid Base of Asphalt Pavement

2014 ◽  
Vol 505-506 ◽  
pp. 72-76
Author(s):  
Qiao Ru Li ◽  
Dong Zhi Liu ◽  
Ji Shu Sun ◽  
Jian Rong Lu
Keyword(s):  
Dynamic Response ◽  
Load Distribution ◽  
Asphalt Pavement ◽  
System Model ◽  
Rigid Base ◽  
Stress And Strain ◽  
Time Varying ◽  
Heavy Load ◽  
Viscoelastic System ◽  
Finite Element Software

In order to study the dynamic response law of semi-rigid base of asphalt pavement under heavy load traffic, the viscoelastic system model under heavy load was established based on measured loading pattern and axle load distribution with the finite element software ANSYS12.0. Heavy load traffic effect on the dynamic response of semi-rigid base of asphalt pavement was discussed . The results show that semi-rigid asphalt pavement structure dynamic response value changed with the increase of axle load; time varying regularity of stress and strain was not the same in different directions.

The Study on the Asphalt Pavement with Composite Base

2012 ◽  
Vol 505 ◽  
pp. 468-473
Author(s):  
Jing Song Shan ◽  
Ning Zhang ◽  
He Xue Fan
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Elastic Theory ◽  
Rigid Base ◽  
Internal Stresses ◽  
Heavy Load ◽  
Concrete Layer ◽  
Rigid Layer ◽  
Suitable Structure ◽  
Treated Layer

Semi-rigid layer is widely used as the base in China. However, the structure has resulted in many premature distresses in asphalt concrete layer. In order to overcome the problem, the composite base is introduced which is composed by both flexible and chemically stabilized material. The internal stresses are calculated by linear multilayer elastic theory and then, a comparison of the stresses of asphalt pavement with semi-rigid base and composite base is provided. The result shows that the composite base composed by all, consisting of the asphalt treated layer, graded crushed stone and cement treated layer is more suitable structure to resist cracking and the structure also has good adaptability to heavy load.

Dynamic Response of Asphalt Pavement on Semi-Rigid Base due to Heavy Load

2013 ◽  
Vol 405-408 ◽  
pp. 1745-1752
Author(s):  
Li Juan Zhang
Keyword(s):  
Shear Stress ◽  
Surface Layer ◽  
Tensile Stress ◽  
Compressive Stress ◽  
Asphalt Pavement ◽  
Road Surface ◽  
Rigid Base ◽  
Heavy Load ◽  
Vertical Strain ◽  
Surface Deflection

The purpose of this paper is to study dynamic-characteristics of asphalt-pavement on semi-rigid base loaded with moving, heavy-load. Based on transient-dynamics theory, three-dimensional finite-element (FE) model was developed for structural dynamic-responses analysis using ANSYS software. The heavy-duty axle-load model was established according to Belgium-Design Code, and the dynamic-load was simplified as sinusoidal-wave load. For the pavement mechanics indexes (road-surface deflection, the vertical and lateral stress, the shear stress and the strain), the time-history curves and distribution conditions in the structure were presented. Expect tensile-strain at surface-layer, the relationship between axle-load weight and mechanic-indexes are almost linearly proportional. The calculation shows that under moving heavy-load, the surface-layer suffers from rather high vertical compressive-stress and shear-stress, the base and subbase are loaded with high tensile-stress and the subgrade top undergoes large vertical-strain . For asphalt-pavement on semi-rigid loaded with moving, heavy-load, besides the conventional indexes (including road-surface deflection and tensile-stress at the bottom of base or subbase), the design indexes should also include the shear-stress on road surface, the vertical-strain on the top of subgrade and the vertical compressive-stress on road surface.

The Dynamic Response of Large Longitudinal Slope of Asphalt Road Pavement under Heavy Impulsive Load

2014 ◽  
Vol 1065-1069 ◽  
pp. 806-813
Author(s):  
Yan Chun Li ◽  
Yuan Yuan Xin
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
Shear Strain ◽  
Element Model ◽  
Impulsive Load ◽  
Heavy Load ◽  
Finite Element Software ◽  
Road Pavement ◽  
Asphalt Road ◽  
Longitudinal Slope

In order to conduct a further investigation of the causes of damages in large longitudinal slope of asphalt road pavement under actual heavy load, a three-dimensional finite element model was established by ANSYS finite element software. Through applying impulsive load in this model, the variation of the strains of large longitudinal slope of asphalt road pavement under different conditions was obtained and the influence of gradient on the dynamic response of large longitudinal slope of asphalt road pavement was analyzed. The results show that the strains of large longitudinal slope of asphalt road pavement increased with the increase of load times. Flexure tensile strain and shear strain were similitude with the change tendency of the increase of overloading rate but the data increased significantly. The transversal shear strain increased with the increase of gradient.

Effect of vehicle speed and overload on dynamic response of semi-rigid base asphalt pavement

2019 ◽  
pp. 1-31 ◽  
Author(s):  
Ogoubi Cyriaque Assogba ◽  
Yiqiu Tan ◽  
Zhiqi Sun ◽  
Nonde Lushinga ◽  
Zheng Bin
Keyword(s):  
Dynamic Response ◽  
Asphalt Pavement ◽  
Rigid Base ◽  
Vehicle Speed

Stress Characteristic Analysis of Repaving Asphalt Pavement Structure on Old Cement Road

2012 ◽  
Vol 594-597 ◽  
pp. 1377-1381 ◽  
Author(s):  
Hong Lu Mao ◽  
Pei Zhi Zhuang ◽  
Ya Nan Zang ◽  
Xiao Ming Yi
Keyword(s):  
Shear Stress ◽  
Compressive Stress ◽  
Asphalt Pavement ◽  
Rigid Base ◽  
Cement Concrete ◽  
Characteristic Analysis ◽  
Finite Element Software ◽  
Splitting Failure ◽  
Cement Concrete Pavement ◽  
Pavement Structure

To solve the early destruction problems occurred when overlaying asphalt pavement structure containing semi-rigid base on broken cement concrete pavement, finite element software is used to compare the stress characters between the repaving pavement and ordinary pavement, and analyze the repaving structures under different loads and different road transverse grade. It shows that the value of compressive stress at the top of base of repaving pavement is significantly higher than that of ordinary pavement, meanwhile, its value of tensile stress of base bottom is lower; the asphalt surface and new base top of repaving pavement need to bare a high value of shear stress and compressive stress under overload, so it’s prone to splitting failure in the base. With the increase of transverse grade, both the shear stress difference of road surface and maximum vertical compressive at top of the base increase in a lower position, but the situation is opposite in the higher position.

Analysis of Influence Factors of Temperature Stress for Open-Graded Large Stone Asphalt Mixes of Asphalt Pavement

2011 ◽  
Vol 52-54 ◽  
pp. 974-977 ◽  
Author(s):  
Hong Bing Guo ◽  
Shuan Fa Chen
Keyword(s):  
Finite Element ◽  
Temperature Stress ◽  
Asphalt Pavement ◽  
Influence Factors ◽  
Design Parameters ◽  
Rigid Base ◽  
Asphalt Mixes ◽  
Finite Element Software ◽  
Large Stone ◽  
Test Road

The reflective cracking is one of the main damages of semi-rigid base asphalt pavement and rigid base asphalt pavement, how to control its emergence and development is still a major problem for road engineering. At present, researches on mechanical behavior of Open-graded Large Stone asphalt Mixes (OLSM) in China almost remain in the test road observations, very few study it from the point of the finite element theory. Aiming at this problem, a method of using OLSM as the cracking alleviation layer is proposed. The calculation principles of temperature stress of lean concrete base asphalt pavement with OLSM has been introduced, on the basis of the finite element software of ABAQUS, 3-D Finite Element Method (FEM) is used to analyze temperature stress for OLSM of asphalt pavement, the influence rule of pavement design parameters for its temperature stress has been discussed, and the theoretical basis for structural design of asphalt pavement with OLSM has been found.

A Rutting-based Optimum Maintenance Decision Strategy of Hot In-place Recycling in Semi-rigid Base Asphalt Pavement

2021 ◽  
pp. 126663
Author(s):  
Yuanyuan Pan ◽  
Guoqiang Liu ◽  
Dong Tang ◽  
Dongdong Han ◽  
Xuanguo Li ◽  
...  
Keyword(s):  
Asphalt Pavement ◽  
Rigid Base ◽  
Decision Strategy ◽  
Maintenance Decision

Dynamic response of asphalt pavement under vibration rolling load: Theory and calibration

2021 ◽  
Vol 143 ◽  
pp. 106633
Author(s):  
Shi-Ping Wang ◽  
Han-Cheng Dan ◽  
Liang Li ◽  
Xiang Liu ◽  
Zhi Zhang
Keyword(s):  
Dynamic Response ◽  
Asphalt Pavement ◽  
Load Theory ◽  
Rolling Load
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