GIS Application to Investigate Soil Condition Effect on Pavement Performance

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GIS Application to Investigate Soil Condition
Effect on Pavement Performance

• Lu Gao
• CE 394K.3 GIS in Water Resources
• Dr. Maidment

2
Outline

• Background
• GIS Application
• Conclusion

3
Background

• Database
• PMIS (Pavement Management Information System)
• --- TxDot
• SSURGO (Soil Survey Geographic)
• --- National Resources Conservation Service

4
Background

• Variables
• Pavement Performance Indicator Distress Scores,
  Condition Scores, Ride Scores
• --- PMIS
• Drainage Class, HEL (Highly Erodible Lands
  classification)
• --- SSURGO

5
Background

• Distress Scores describe the amount of distress
  on the pavement surface.
• Condition Scores describes the average persons
  opinion of a pavement condition.
• Ride Scores describes the roughness of a
  pavements surface.

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Background

• Distress Scores range from 1 (very poor) to 100
  (very good)
• Condition Scores range from 1 (very poor) to 100
  (very good)
• Ride Scores range from 0.1 (very rough) to 5.0
  (very smooth)

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Background

• Objective

Distress Scores
Drainage Class
Effect
Condition Scores
PMIS
SSURGO
ARCGIS
Ride Scores
HEL
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GIS Application

• Dallas County

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GIS Application

• Step 1
• Create Layers from PMIS --- Distress Scores

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GIS Application

• Step 1
• Create Layers from PMIS --- Condition Scores

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GIS Application

• Step 1
• Create Layers from PMIS --- Ride Scores

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GIS Application

• Step 2
• Create Layers from SSURGO --- Drainage Class

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GIS Application

• Step 2
• Create Layers from SSURGO --- HEL (Highly
  Erodible Lands Classification)

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GIS Application

• Step 3 Create New Layers using Selection by
  Location

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GIS Application
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GIS Application

• Step 4 Calculation
• Calculate the mean of the pavement performance
  indicators in different soil condition lands.
• Calculate Flexible and Rigid Pavement
  respectively

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Conclusion

• The Effect of Erodible Land Classification to
  Pavement Performance is NOT clear

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Conclusion

• There is CLEAR effect of Drainage Lands to
  Pavement Performance.

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Conclusion

• There is CLEAR effect of Drainage Lands to
  Pavement Performance.

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Conclusion

• There is CLEAR effect of Drainage Lands to
  Pavement Performance.

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Conclusion

• Drainage ability of soil can effect the Pavement
  Performance significantly.
• When soil drainage ability is poor, there is NOT
  big difference between Flexible and Rigid
  pavement.
• When soil drainage ability is well, Flexible
  pavement always has BETTER performance.

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Question

• Thanks a lot!