Motlagh, K C (1992) Algorithms for computerised surface modelling and highway alignment design. PhD thesis, University of Strathclyde, UK.
Abstract
The computer technology revolution has significantly increased the ability to analyse, visualise, compute and commincate. The main theme of this thesis is based on the need for development of new methods and concepts in surveying and highway design. Automation in the field of surveying is a necessity in order to keep pace with the speed of data processing in the design office. Total stations, digitizers, photogrammetry and satellite remote sensing are all part of the initial data collection methods. Such data is then processed to produce contour maps, ground models, 3-D models etc. Ground models are the basis for any civil engineering project and their accuracy is of great importance. Several methods are reviewed and then applied to develop a surface modelling computer package. The package sets out to eliminate some of the deficiencies present in existing packages, such as accurate interpolation, contour crossing, boundary implementation, accurate area and volume calculations. On the other hand, horizontal and vertical alignment design methods are reviewed, and a new method of design based on splines is proposed. A computer package based on this method is developed and tested. By interfacing the two computer packages (i. e. surface modelling and highway alignment modelling) longitudinal and cross sectional profiles are computed by developing a third computer package dedicated to sectional modelling. All the packages are developed for a standard microcomputer (i. e. IBM XT or compatible) with minimum configuration, hence giving small companies an opportunity to use low cost machines. Also, all the details of theories on surface modelling and highway alignment design for implementation in computers are explained, thus giving the reader an opportunity to examine the algorithms, as there is very little literature on the subject. This will hopefully provide the basis for further developments and modifications.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | accuracy; automation; civil engineering; highway; remote sensing |
| Index terms: | package, implementation, data processing, automation, accuracy, modelling, satellite, low cost, remote sensing, surveying, design method, configuration, maps |
| Subjects: | systems engineering, networking, bidding, spatial and geospatial analysis, professional development, data science, automation and robotics, analytical methods, health monitoring assessment and metrics, contractual arrangements, design methods, research products and data |
| Topics: | Digital Applications, Research Practice, Engineering Principles, Design Practice, Health and Safety, Information Management, Sustainability, Procurement |
| Descriptive scope: | 3 PCA |
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