Numerical Analysis of Asphalt Pavement of Lean Concrete Base

2013 ◽  
Vol 361-363 ◽  
pp. 1699-1702
Author(s):  
Li Jun Suo ◽  
Bing Gang Wang
Keyword(s):  
Finite Element ◽  
Thermal Stress ◽  
Numerical Analysis ◽  
Finite Element Model ◽  
Asphalt Pavement ◽  
Element Model ◽  
The Other ◽  
Shearing Stress ◽  
Traffic Loading ◽  
Concrete Base

Both thermal stress and load stress, which are caused by temperature change and traffic loading, are important parameters used in the analysis of the new asphalt pavement design. In order to study the stress of asphalt pavement of lean concrete base, first of all, threedimension finite element model of the asphalt pavement of lean concrete base is established. The main objectives of the paper are investigated. One is calculation for stress of asphalt surface, and the other is calculation for stress of lean concrete base. The results show that load stress of lean concrete base increases quickly with the increase of load. Thermal stress of lean concrete base increases with the increase of thickness of base. Asphalt surface is in the state of compression. Maximum shearing stress decreases with the increase of thickness of asphalt surface.

Study on Load Stress of Lean Concrete Base in Asphalt Pavement

2012 ◽  
Vol 178-181 ◽  
pp. 1495-1498
Author(s):  
Li Jun Suo
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Asphalt Pavement ◽  
Element Model ◽  
Pavement Design ◽  
The Other ◽  
Three Dimension ◽  
Traffic Loading ◽  
Concrete Base

Load stress, which is caused by traffic loading, is important parameter used in the analysis of the new pavement design. In order to study the load stress of lean concrete base in the asphalt pavement, first of all, three–dimension finite element model of the asphalt pavement is established. The main objectives of the paper are investigated. One is calculation for load stress of lean concrete base, and the other is analysis for relationship between load stress of lean concrete base and parameters, such as thickness, modulus. The results show that load stress of lean concrete base decreases, decreases and increases with increase of base’s thickness, surface’s thickness and ratio of base’s modulus to foundation’s modulus respectively. So far as the traffic axle loading is concerned, it has a significant impact on load stress of lean concrete base, and it can be seen from results that when load is taken from 100kN to 220kN, load stress increases quickly with the increase of the traffic axle loading.

Study on Shearing Stress of Asphalt Surface on Lean Concrete Base

2012 ◽  
Vol 178-181 ◽  
pp. 1402-1405
Author(s):  
Li Jun Suo
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Asphalt Pavement ◽  
Element Model ◽  
The Other ◽  
Three Dimension ◽  
Shearing Stress ◽  
Concrete Base ◽  
Contraction Joint ◽  
Decrease Decrease

In order to study the shearing stress of asphalt surface on lean concrete base, first of all, three–dimension finite element model of the asphalt pavement is established. The main objectives of the paper are investigated. One is calculation for shearing stress of asphalt surface in transverse contraction joint of lean concrete base, and the other is analysis for relationship between load stress of asphalt surface and parameters, such as thickness, modulus. The results show that maximum shearing stress, which is caused by load, is evident in asphalt surface which is located in transverse contraction joint of lean concrete base of asphalt pavement. Maximum shearing stress decrease, decrease, decrease and increase respectively with increase of the surface’s modulus, the surface’s thickness, base’s thickness and ratio of base’s modulus to foundation’s modulus.

Mechanical Analysis of Porous Concrete Base in Asphalt Pavement

2012 ◽  
Vol 443-444 ◽  
pp. 751-756
Author(s):  
Li Jun Suo ◽  
Xia Guang Hu
Keyword(s):  
Finite Element ◽  
Thermal Stress ◽  
Finite Element Model ◽  
Design Method ◽  
Asphalt Pavement ◽  
Element Model ◽  
Three Dimension ◽  
Porous Concrete ◽  
Finite Element Software ◽  
Concrete Base

In China, it is fact that porous concrete base has been used in the construction of asphalt pavement in recent years because porous concrete base has good performance. However, Reasonable design method has not been put forward so far. Therefore, it is necessary to analyze load stress and thermal stress of asphalt pavement which includes porous concrete base in order to put forward theoretical basis for pavement design method. In the paper, three–dimension finite element model of asphalt pavement, which includes porous concrete base and asphalt surface, is created for the purpose of studying load stress and thermal stress of porous concrete base in asphalt pavement. Based on numerical method of three–dimension finite element model, finite element software, such as ANSYS, is employed to study load stress and thermal stress of porous concrete base in asphalt pavement. After that, the effect of different factors on stress is studied, and the factors include thickness of surface, thickness of base and ratio of base’s modulus to foundation’s modulus. Finally, calculation results for stress are compared with each other, and it shows that load stress of porous concrete base decreases with increase of base’s thickness, while thermal stress of porous concrete base increases with increase of base’s thickness. Load stress and thermal stress of porous concrete base decrease with increase of surface’s thickness. Load stress and thermal stress of porous concrete base increase with increase of ratio of base’s modulus to foundation’s modulus.

Analysis of Thermal Stress of Asphalt Pavement on Lean Concrete Base

2012 ◽  
Vol 446-449 ◽  
pp. 2418-2421
Author(s):  
Li Jun Suo ◽  
Bin Yang
Keyword(s):  
Thermal Stress ◽  
Asphalt Pavement ◽  
Element Model ◽  
Maximum Tensile Stress ◽  
The Other ◽  
Three Dimension ◽  
Shearing Stress ◽  
Concrete Base ◽  
Increase With Increase ◽  
Contraction Joint

Thermal stress has been an important parameter used in the analysis of the new pavement design. For the purpose of studying the thermal stress for the asphalt pavement of lean concrete base, first of all, three–dimension finite element model of the asphalt pavement is established. The two main objectives of the paper are investigated. One is analysis for thermal stress of lean concrete base, and the other is analysis for thermal stress of asphalt surface. The results show that thermal stress of lean concrete base increases, decrease and increase with increase of base’s thickness, surface’s thickness and ratio of base’s modulus to foundation’s modulus respectively. So far as the asphalt surface is concerned, maximum shearing stress and maximum tensile stress, which are caused by temperature difference, are evident in asphalt surface which is located in transverse contraction joint of lean concrete base of asphalt pavement.

Numerical Analysis of Porous Concrete Base in Asphalt Pavement Based on Traffic Load

2013 ◽  
Vol 405-408 ◽  
pp. 1757-1760
Author(s):  
Li Jun Suo
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Asphalt Pavement ◽  
Element Model ◽  
Mechanical Analysis ◽  
The Other ◽  
Traffic Load ◽  
Porous Concrete ◽  
Concrete Base ◽  
Increase With Increase

Traffic load is important parameter used in the analysis of the new pavement design. However, few studies have done extensive and intensive research on the load stress for asphalt pavement of porous concrete base. Because of that, it is necessary to study the stress of porous concrete base in the asphalt pavement based on traffic load. In the paper, first of all, threedimension finite element model of the asphalt pavement is created for the aim of doing mechanical analysis for the asphalt pavement. And then, the two main objectives of this study are investigated. One is calculation for load stress of porous concrete base, and the other is analysis for load stress of porous concrete base. The results show that load stress of porous concrete base decreases, decrease and increase with increase of bases thickness, surfaces thickness and ratio of bases modulus to foundations modulus respectively.

Load Stress of Roller Compacted Concrete Base in Flexible Pavement

2013 ◽  
Vol 361-363 ◽  
pp. 1713-1716
Author(s):  
Li Jun Suo ◽  
Xin Wu Wang
Keyword(s):  
Finite Element ◽  
Asphalt Pavement ◽  
Element Model ◽  
Maximum Load ◽  
Flexible Pavement ◽  
The Other ◽  
Roller Compacted Concrete ◽  
Concrete Base ◽  
Longitudinal Joint ◽  
Decrease Decrease

In order to analyze load stress of roller compacted concrete base of asphalt pavement, first of all, threedimension finite element model of the flexible pavement is established. The main objectives of the paper are investigated. One is calculation for stress of roller compacted concrete base in asphalt pavement, and the other is analysis for relationship between load stress of roller compacted concrete base and parameters, such as thickness, modulus. The results show that stress, which is caused by load that is located in the middle of longitudinal joint of roller compacted concrete base of asphalt pavement. Maximum load stress decrease, decrease and increase respectively with increase of the surfaces thickness, bases thickness and ratio of bases modulus to foundations modulus.

Analysis of Thermal Stress for Asphalt Surface on Porous Concrete Base

2012 ◽  
Vol 446-449 ◽  
pp. 2488-2491
Author(s):  
Li Jun Suo ◽  
Huai Feng Tong
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Thermal Stress ◽  
Asphalt Pavement ◽  
Element Model ◽  
Three Dimension ◽  
Porous Concrete ◽  
Concrete Base ◽  
Calculation Results ◽  
Contraction Joint

In the paper, three–dimension finite element model of asphalt pavement, which includes transverse contraction joint of porous concrete base and asphalt surface, is established for the purpose of studying thermal stress of asphalt surface which is located in transverse contraction joint of porous concrete base. Calculation results of thermal stress are compared with each other. The results show that thermal stress of asphalt surface increases with increase of surface’s modulus, and thermal stress of asphalt surface increases with increase of ratio of base’s modulus to foundation’s modulus, and thermal stress of asphalt surface increases with increase of temperature field of base.

Stress Analysis of Cement Concrete Pavement under Overweight Loads

2012 ◽  
Vol 446-449 ◽  
pp. 949-953
Author(s):  
Ya Ni Lu ◽  
Tao Li Xiao
Keyword(s):  
Finite Element ◽  
Regression Analysis ◽  
Finite Element Model ◽  
Element Model ◽  
Concrete Pavement ◽  
The Other ◽  
Tension Stress ◽  
Statistical Regression ◽  
Cement Concrete ◽  
Cement Concrete Pavement

Special load has produced serious damage to the concrete pavement because of the great gross weight and heavy axle load, but the present specification has not mentioned this kind of load. On this occasion, Several conditions of critical load are identified through ANSYS finite element model analysis and the formula through statistical regression analysis to the bottom maximum tension stress is drawn up. Which can not only guide the concrete pavement design under the special load but also the result may be referred by the other kinds of engineering.

scholarly journals Investigation of Beam Column Joint with Beam Weak in Shear under Monotonic Loading

2018 ◽  
Vol 7 (2.20) ◽  
pp. 182
Author(s):  
B Mounika ◽  
P Poluraju
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Main Parameter ◽  
Analytical Study ◽  
Experimental Studies ◽  
Element Model ◽  
The Other ◽  
Shear Reinforcement ◽  
Weak Beam ◽  
Column Joint

Earthquake affected structures, mostly failure occur at beam column joints (BCJ). BCJs are categorized according to their geometrical grouping as Interior, Exterior, and Corner joints. Exterior beam column joint (i.e., terminating the beam on one of the column faces) was the most vulnerable one with respect to the plane of loading. The present study aims at ductility behaviour of exterior BCJ with conventional reinforcement using the code IS 456-2000 and with special confining reinforcement using the Code IS 13920-2016. Four number of beam-column joint specimens are considered in which the first one is detailed as per IS 456-2000, the second one as per IS 13920-2016 and the other two with 50% and 30% reduction of shear reinforcement was provided while compared with the first specimen. It is mainly to satisfy the strong column-weak beam concept as the main parameter. The test was carried out on the loading frame with hinged conditions to the column both ends, and the load is applied at the tip of the beam. The experimental studies are proven with an analytical study carried out by finite element model by using ANSYS and disparate parameters are assessed both experimentally and analytically.  

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