Summary of Ph.D thesis: A study on the embankment caculation method reinforced by geotextile in the construction of highway in Vet Nam

Reasons for Ph.D thesis A study on the embankment caculation method reinforced by geotextile in the construction of highway in Vet Nam: to complete calculation methodology for problem embankment using geotextiles in the construction of highways.
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Summary of Ph.D thesis: A study on the embankment caculation method reinforced by geotextile in the construction of highway in Vet Nam -i- MINISTRY OF EDUCATION AND TRAININGUNIVERSITY OF TRANSPORT AND COMMUNICATION Hao Huynh Ngoc A STUDY ON THE EMBANKMENT CACULATIONMETHOD REINFORCED BY GEOTEXTILE IN THE CONSTRUCTION OF HIGHWAY IN VIETNAM Major: Construction of hightway and street Code: 62.58.30.01 SUMMARY OF Ph.D THESIS Hanoi, June 2014 - ii - This thesis was completed at the university of transport and communicationSupervisors: Prof. PhD Phung Vu Dinh PhD Sy Vu DucExaminer 1: Prof, Dr.Sc Quang Nguyen Van Hanoi Architectural UniversityExaminer 2: Prof, PhD Chuong Do Ba National University of Civil EngineeringExaminer 3: Ass.Prof, Dr.Sc Can Nguyen Van Hanoi University of Mining and Geology This thesis is defended at the university of transport and communication on ... h, ........., 2014. Thesis can be found at: 1. National Library 2. Library of the university of transport and communication - iii -Publications1. Hao Huynh Ngoc MS, Phung Vu Dinh Prof.PhD (2009), “Several designing measures using geotextiles in order to stabilize weak soil in the constructing of road and dam, dike”. Bridge and Road Magazine, No. Nov-2009, Page 8-11.2. Quang Tran Dinh PhD, Hao Huynh Ngoc MS (2011), “Study of the improvement for fabrication and construction of prestressed I beam l = 42m with continous thermo slad based on the construction of Hoa xuan brigde- Danang city“, The Transport and communications magazine, No. Aug-2011, ISSN 0866-7012, Page 26-29.3. Hao Huynh Ngoc MS, Phung Vu Dinh Prof.PhD (2013), “Probability of instability of backfill construction from design perspective“, Bridge and Road Magazine, No. Aug-2013, ISSN 1859-459X, Page 19-22.4. Hao Huynh Ngoc MS, Phung Vu Dinh Prof.PhD (2013),“The stability caculation model of embankment (highways, dikes, dams) reinforced by geotextile thanks to the finite element method and mention pull behaviors of geotextile and relationship between stresses and strains of the contact elements between embankment and geotextile“, Bridge and Road Magazine, No. Nov-2013, ISSN 1859-459X, Page 8-11.5. Hao Huynh Ngoc MS, Vu Duc Sy PhD, Phung Vu Dinh Prof.PhD (2014), “Slide curve analysis results of slope stabilization by finite element method (HNH_RESS software) in comparison with analytic method “, Bridge and Road Magazine, No. Jan and Feb-2014, ISSN 1859-459X, Page 38-41.-4- -1- INTRODUCTION1 - Introduction to the study: Along with the strong growth in the application ofnew materials technology in the world , Vietnam’s also very interested in thestudy of materials using in geotextile reinforced embankment works roads , dikesand dams . So that, the research methods completing for calculating results forreliability problems embankment reinforced by geotextile in the construction ofroads in Vietnam becomes necessary .Within the scope of this study , the author used the finite element method -numerical method has several advantages in the present time to apply theconstruction algorithm , based on the programming software suit Vietnam and theconditions for a number of research results stability problems , stress - statedeformation embankment , proposed making calculations and charts used inutility design .2 - Reasons for choosing topic : To complete calculation methodology forproblem embankment using geotextiles in the construction of highways3 - Purpose : Develop computational models roadbed embankment reinforced bygeotextile , contribute to improve the calculation method actually worked closelywith the material and the ability to predict an instability correctly in order to bringhigh efficiency , ensure technical requirements designed embankment geotextilereinforcement4 - Research Subjects : The land cover using geotextile in road works background5 - Scope of the Study : Selection , calculation model building problemembankment geotextile reinforcement . Construction algorithms and computerprograms using the finite element method . Look at the problem embankmentgeotextile reinforcement .6 - The meaning of scientific and practical subjects : geotextiles is a new materialmade from synthetic polymer materials or products related to the polymer throughdifferent manufacturing technologies together. Since the 70s of last centurygeotextile fabric was born in the western world . Due to the interesting propertiesof geotextile Vietnam should have quickly been used to enhance reinforcementload capacity and stability for the construction, especially the buildingembankments in road and bridge construction and irrigation ...The early years of the 90s - last century, geotextiles are widely used in manycountries such as France , the Netherlands , the U.S. and Japan , particularly inSoutheast Asian countries like Thailand , Philippines , Indonesia , Malaysia , ... inour country , geotextile be put to use building the road since 1993 and more usingwidely. According to a study by experts at home and abroad show geotextile usedin the construction of high embankment of earth or embankments on soft soils areeffective economic and technical, easy simple in construction, reduced costs from15-20%, increase quality of use, the life of the facility ...