Research On The Measurement Of Airport Fill Engineering Quantity Based On 3D Real-scene Modeling

With the rapid development of my country’s social economy,my country’s civil engineering industry has entered a new period of development.As one of the main projects in civil engineering construction,earthwork has the characteristics of large amount of work,wide range of influence,and complex construction conditions.At this stage,the measurement of the filling quantity is faced with problems such as long working time and complex work process.For the measurement of the image progress of the filling project,it often depends on the judgment of the project experience,and it is impossible to obtain the construction progress data in a timely and accurate manner.Therefore,in view of the shortcomings of traditional detection methods,it is urgent to propose a new method for measuring the filling quantity and image progress.To this end,this thesis proposes a method for measuring and calculating airport fill engineering quantities based on 3D real-scene modeling.This method can quickly and accurately realize the measurement of airport fill engineering quantities,and at the same time obtain accurate filling engineering image progress in time.First of all,this thesis studies the construction process of airport filling engineering,and analyzes the related problems of engineering quantity measurement in the construction process,proposes a parametric model modeling method according to the characteristics of filling engineering,and establishes the design model of airport filling engineering.And study the specific influence of the relevant parameters in the design model on the volume value of the model.Second,the UAV 3D real-scene modeling technology is used to establish the real-scene model of the airport filling project.The design model and the real-scene model are used to calculate the amount of the airport filling project in combination with different engineering quantity measurement methods.By comparison,it is concluded that DEM method(Digital Elevation Model)is the best measurement method,and the measurement error can be controlled within 1.2%.And then,based on the real-scene model,the image progress of different model forms of the real-scene model is measured,and the comparison shows that the 3D point cloud model is the best 3D real-scene model form,and the measurement error can be controlled within 1%.Finally,this thesis takes a filling project of an airport as a case,and establishes the design model and the real-scene model of the filling project respectively.Combining the design model and the real scene model,the DEM method is used to measure the amount of filling work,and to measure the progress of the filling image of the three-dimensional real spot cloud model in different periods.The validity of the method for measuring the engineering quantity and image progress is verified.The research in this thesis provides a new method for the measurement of filling engineering,improves the efficiency of the measurement,and proposes a new method of engineering quantity measurement and image progress measurement,which provides richer and more intuitive data information for the engineering project,which is useful for the future.Provide certain support to realize the digitalization of earthwork construction.