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Ogoubi Cyriaque Assogba

Bio: Ogoubi Cyriaque Assogba is an academic researcher from Harbin Institute of Technology. The author has contributed to research in topics: Pile & Geogrid. The author has an hindex of 5, co-authored 10 publications receiving 57 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, the authors investigated the distribution of the mechanical parameters in three new semi-rigid pavement structures with typical functional and structural requirements, specially designed to withstand various distresses of semirigid pavements.

44 citations

Journal ArticleDOI
TL;DR: In this article, a semi-rigid base asphalt pavement is still considered as one of the main distress related to Chinese highway pavements, and there are several reasons for this premature damage.
Abstract: Premature deterioration in semi-rigid base asphalt pavement is still considered as one of the main distress related to Chinese highway pavements. There are several reasons for this premature damage...

42 citations

Journal ArticleDOI
TL;DR: In this article, the structural behavior of layered asphalt pavements subjected to dynamic moving wheel loads is studied and a structural model is proposed for the future design of more durable pavement structures.
Abstract: Understanding the structural behavior of layered asphalt pavements subjected to dynamic moving wheel loads is a crucial requirement for the future design of more-durable pavement structures...

20 citations

Journal ArticleDOI
TL;DR: In this paper, an extended search method was developed to determine the optimal relaxation time range (ORTR) in the Prony series model with a reasonable number of terms and provided excellent model fitting.

16 citations

Journal ArticleDOI
TL;DR: In this paper, a 3D nonlinear FEM has been established to simulate the instrumented Harbin-Dalian railway test section, where each train carriage was modeled as a transient dynamic load through a user-defined Dload subroutine.
Abstract: The performance of railroad structure has a tremendous influence on the safety and stable operation of high-speed trains. Strong vibrations and the degradation rate of the track are the main factors affecting the transport safety of a railroad built over a weak soil. Geogrid reinforced embankment supported by pile structure is a new efficient construction technique used to ensure the stability and enhance the performance of the railroad system; but only a few studies are oriented to its behavior under train operation. This paper investigates the dynamic response of geogrid reinforced embankment supported by cement fly-ash gravel pile structure during a high-speed train operation. The establishment of a realistic simulation model for railroad subjected to a moving train load, is an important first step towards the reliable design of geogrid reinforced embankment supported by pile structure. Thus, a 3D nonlinear FEM has been established to simulate the instrumented Harbin-Dalian railway test section. Each train carriage was modeled as a transient dynamic load through a user-defined Dload subroutine. The developed model was successfully validated by the dynamic response recorded from the field test section. The improvement of the railroad structure by the CFG piles and geogrids contributed significantly to the reduction of the vibration in the structure, which attenuates 1.2 times faster with the structure depth, even under overload conditions. Moreover, the phenomenon of resonance observed when the train reaches speeds of 100 and 260 km/h were annihilated. The analysis of the stress distribution within the embankment revealed that a dynamic arch is formed in the embankment at 2 m from the ground. The stress onto the pile was 16 times greater than that acted on the soil and the tensile stress developed in the geogrid was high at the piles edge below. In addition, the coupling effect of geogrid with various tensile strengths and the piles with different strength grades indicated that the combination of a high-strength pile and geogrid significantly reduces the displacement gap due to the variation of train speed. As a result, the vibrations of the track were almost constant during the train operation; thus, ensuring comfort to passengers and reducing the risk of derailment.

12 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors investigated the distribution of the mechanical parameters in three new semi-rigid pavement structures with typical functional and structural requirements, specially designed to withstand various distresses of semirigid pavements.

44 citations

Journal ArticleDOI
TL;DR: In this article, the authors developed IRI prediction models for semi-rigid pavements in single-carriageway roads, where only segments with completely known pavement details were employed, i.e., a section where the complete structure of existing layers above the subgrade.

34 citations

Journal ArticleDOI
TL;DR: In this article , a method of combining indoor experiments with finite element (FE) simulations for strain measurement in asphalt pavement is developed, and the results demonstrate that the FE simulation is also effective for long-term dynamic loading tests.

34 citations

Journal ArticleDOI
TL;DR: In this article, the structural behavior of layered asphalt pavements subjected to dynamic moving wheel loads is studied and a structural model is proposed for the future design of more durable pavement structures.
Abstract: Understanding the structural behavior of layered asphalt pavements subjected to dynamic moving wheel loads is a crucial requirement for the future design of more-durable pavement structures...

20 citations

Journal ArticleDOI
TL;DR: In this article, the mechanical response of HAP under vehicle-temperature coupled load was analyzed using the finite element method, which indicated that concrete between adjacent pipes bears large tensile stress, therefore, is likely to occur in those areas.

17 citations