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Journals / Turkish Journal of Engineering and Environmental Sciences / 2009 / Cilt: 33 - Sayı: 2

Optimization of vertical alignment of highways utilizing discrete dynamic programming and weighted ground line

A. Burak GÖKTEPE
SELİM ALTUN
PERVİZ AHMEDZADE
Pages
105–116
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The aim of this study is to present a method to integrate discrete dynamic programming with WGLM to achieve the best vertical alignment of highways in terms of earthwork optimization.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Earthwork optimization plays an important role for reducing the total cost of highway projects.
📊
Key Findings & Data:Weighted Ground Line Method (WGLM) is an earthwork optimization technique based on a hypothetical ground line balancing cut-fill volumes and minimizing the total amount of earthwork.
💡
Conclusion & Impact:The aim of this study is to present a method to integrate discrete dynamic programming with WGLM to achieve the best vertical alignment of highways in terms of earthwork optimization.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Highway alignment · Earthwork · Optimization

Abstract

Earthwork optimization plays an important role for reducing the total cost of highway projects. Weighted Ground Line Method (WGLM) is an earthwork optimization technique based on a hypothetical ground line balancing cut-fill volumes and minimizing the total amount of earthwork. Current form of the method describes only a hypothetical reference line guiding project engineers to locate the optimal roadway for the fixed horizontal alignment. Therefore, there are numerous grade line alternatives available for a given Weighted Ground Line. The aim of this study is to present a method to integrate discrete dynamic programming with WGLM to achieve the best vertical alignment of highways in terms of earthwork optimization.

Özet

Earthwork optimization plays an important role for reducing the total cost of highway projects. Weighted Ground Line Method (WGLM) is an earthwork optimization technique based on a hypothetical ground line balancing cut-fill volumes and minimizing the total amount of earthwork. Current form of the method describes only a hypothetical reference line guiding project engineers to locate the optimal roadway for the fixed horizontal alignment. Therefore, there are numerous grade line alternatives available for a given Weighted Ground Line. The aim of this study is to present a method to integrate discrete dynamic programming with WGLM to achieve the best vertical alignment of highways in terms of earthwork optimization.

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Cite This Article

GÖKTEPE, A. B., ALTUN, S., AHMEDZADE, P. (2009). Optimization of vertical alignment of highways utilizing discrete dynamic programming and weighted ground line. Turkish Journal of Engineering and Environmental Sciences, Cilt: 33 - Sayı: 2, 105–116. https://ajindex.com/articles/369069

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References (13)

  1. Nomenclature A α β C(ui) Earthwork cost at the ithstage CM CT χ d δ ΔH f(x) fi f0 fr g gmax h hw hW hd h0 l L Earthwork width L Lv m n PS PA PC s S SC S C SF SCS Triangular shaped excess area due to cut slope Triangular shaped absence area due to Şll slope Cumulative cost Optimal elevation increment Elevation of grade line Number of cut areas for new positioning Driving speed Hypothetical natural surface yi AASHTO 2001., “A Policy on Geometric Design of Highways and Streets”, American Association of State Highway and Transportation Officials, Washington, D.C., 2001.
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