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Predicting index to complete schedule performance indicator in highway projects using artificial neural network model

Jasim Nidal A., Maruf Shelan M., Aljumaily Hadi S. M., Al-Zwainy Faiq M. S.

Archives of Civil Engineering

2020

Vol. 66, nr 3

541--554

Inaccurate estimation in highway projects represents a major problem facing planners and estimators, especially when data and information about the projects are not available, and therefore the need to use modern technologies that addresses the problem of inaccuracy of estimation arises. The current methods and techniques used to estimate earned value indexes in Iraq are weak and inefficient. In addition, there is a need to adopt new and advanced technologies to estimate earned value indexes that are fast, accurate and flexible to use. The main objective of this research is to use an advanced method known as artificial neural networks to estimate the TSPI of highway buildings. The application of artificial neural networks as a new digital technology in the construction industrial in Republic of Iraq is absolutely necessary to ensure successful project management. One model built to predict the TCSPI of highway projects. In this current study, artificial neural network model were used to model the process of estimating earned value indexes, and several cases related to the construction of artificial neural networks have been studied, including network architecture and internal factors and the extent of their impact on the performance of artificial neural network models. Easy equation was developed to calculate that TSPI. It was found that these networks have the ability to predict the TSPI of highway projects with a very outstanding saucepan of reliability (97.00%), and the accounting coefficients (R) (95.43%).

Obejście drogowe zapory Hoovera

Kosicki A. J.

Drogownictwo

2012

nr 9

302-309

Jednym z najciekawszych drogowych projektów amerykańskich ostatnich lat jest obejście zapory Hoovera na granicy stanów Arizona i Nevada w południowo-zachodniej części Stanów Zjednoczonych. Na szczególną uwagę zasługuje część mostowa projektu, a zwłaszcza przekroczenie kanionu rzeki Colorado mostem łukowym o długości 579 m (1900 ft.) spinającym brzegi kanionu i usytuowanym około 260 m powyżej jego dna. Drogowa część projektu wymagała budowy 6-kilometrowego odcinka autostradowego w trudnym pustynno-górzystym terenie.

One of the most interesting American highway projects of the last decade was the construction of the Hoover Dam Bypass. The project, which was located on the border of Arizona and Nevada, required a new crossing of the Colorado River. The new, 579 m long, bridge is a spectacular concrete arch with a composite concrete-steel superstructure. The highway portion project required a construction of a 6,3 km long section of a new freeway in a very dificult mountainous terrain