Font Size: a A A

The Study Of Evaluation And Forecast On Pavement Structure Performance

Posted on:2004-02-04Degree:MasterType:Thesis
Country:ChinaCandidate:Q F HuFull Text:PDF
GTID:2132360095450282Subject:Structure engineering
Abstract/Summary:PDF Full Text Request
The highway transportation is a nationally public foundation facility which provides some service for our society, and represents the modernization level of the whole social development and the really national economy strength. The Pavement Structure Performance (TPSP) is defined as an ability to guarantee all vehicles to transport normally and safely. The driving comfort and vehicles' engine performance are affected directly by its capability, and the road transportation benefits are also determined by its quality. Therefore, TPSP is always a domestically and internationally academic focus to which academe and engineering experts pay attention. This thesis is completed on the basis of studying a lot of literatures at home and abroad in-depth, and includes the latest domestic and international research results. Some new models are analyzed and established in its content. Its main points and conclusions are explained as follows:(1) Summarize systematically the present research conclusions of TPSP in the domestic and international literatures, and point out the main problems of the realm and provide some solutions.(2) Classify and define all variously complicated damage phenomena in the pavement, and summarize the key reasons for these damage and breakages, which are prepared for choosing the evaluation indexes and establishing evaluation criteria.(3) According to system science theories and the function principles, the thesis defines the Pavement Structure Performance. And Choose the five token road indexes which stand for pavement usage functions, namely Road Structure Strength Index (RSSI), Road Quality Index (RQI), Pavement Function Condition PFC or SFC, Pavement Condition Index (PCI) and Pavement Environment Index (PEI), and discuss various indexes rating standard. In a word, the study and evaluation of Pavement Performance was established systematically, which provide a fundamental theory for the pavement management.(4) Analyze to establish a frame and model for the pavement performance database in detail, and discuss the GIS system model which is applied in the evaluation and forecast of pavement performance in brief. From now on, we can provide some positive preparations for a future digital information database of highway system.(5) From the point of the pavement function request and the whole evaluation system, define the Pavement Quality Index (PQI) which represents the holistic pavement structure performance, establish the evaluation model and rating standard, apply the fuzzy theory, the theory of set pair analysis and the gray system theory in the evaluation of pavement performance, and create some appraisal models.(6) The thesis has reviewed and summarized these domestic and international forecast models of pavement performance, and analyzed and abstracted the factors which affect the function of pavement. According to Chinese highway engineering reality, I have proposed and established the grey-markov model and the nerve-net model that are used to predict the pavement future performance. All these have laid afoundation for the scientific decision-making in the management of road.(7) Fatigue damage is one of the basic forms of the breakages in road surface structure under these continual traffic loads and the environmental effect. The thesis has analyzed systematically the fatigue damnification performance of the asphalt road, and created a calculation model that can be used to analyze those asphalt pavements' accumulating fatigue and predict their fatigue life.(8) Apply those above evaluation and forecast models in some freeways in Henan province such as Anyang-Xinxiang, Xuchang-Luohe, Zhengzhou -Luoyang and Zhengzhou-Kaifeng.Discuss and study the evaluation conclusions elementarily, and propose some related technique suggestions for the maintenance of the four freeways.As is discussed above, the research conclusions and models in the thesis not only have the significant theory value, but also have some technically instructional guidance for the highway engine...
Keywords/Search Tags:pavement structure performance, damage and damnification, survey, evaluation, fuzzy theory, gray system, fatigue, forecast
PDF Full Text Request
Related items