The Research For Highway Subgrade Subsidence Monitor And Construction Control Technology

With the decades of rapid development，Highway construction in China has gotsome glorious achievements，at the same time，it also accumulated a wealth ofconstruction experience。 With the development and research of the Informationconstruction technology, and gradually applied it to practical engineering construction,As a result,it not only improved the quality of the project construction,but alsoimproved the economic efficiency and reduced the project cost.Embankment is the main structure of the highway,it directly affects the highwayengineering quality,service life and the safety of the construction period and operationperiod.In the process of the subgrade construction,grasp the rate of subgradereclamation and the construction time of various structural layers is all based onembankment settlement monitoring and prediction.The embankment settlement andpost-construction settlement of the highway,directly affect the quality and safety of thehighway construction.therefore,scientific monitoring and accurate prediction theembankment settlement will play an important role in control the filling period ofsettlement and the post-construction settlement. Roadbed settlement prediction is thecore content of the expressway informatization construction technology. Therefore,tostrengthen the prediction of roadbed filling period settlement and post-constructionsettlement, especially for special roadbed, and according to the forecast results,reasonable arrangement of time limit for a project, organize the construction sequence isone of the important method to ensure engineering quality.This article takes Hu Sha express highway as the projiect background,carry onresearch for roadbed settlement prediction and the construction control technology.①Analysis domestic and foreign current research situation of the embankmentsettlement, formulate detailed monitoring solution for Hu Sha highway roadbed stabilityand settlement monitoring by studying past embankment settlement monitoring scheme.②Detailed study of the grey system theory,established grey forecasting model toanalysis and forecast the embankment settlement.Based on GM(1,1) model, establisheda new model-gray optimization model GOM to predict roadbed settlement, and theprediction result is consistent with actual situation. So it proves that the optimizationmodel can be widely used in practical engineering,the situation of precision test anderror fitting shows that the precision of the gray optimization model is higher than GM(1,1) model. ③By observing the construction process of the roadbed sedimentation, points outthe influencing factors of roadbed stability; Based on the analysis of the measured dataand the grey system theory,determined roadbed settlement control standard of the HuSha epress highway...