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Control Systems for Milling Smooth Super-Elevated Curves in Urban Areas

This document outlines the advanced milling machine control systems specifically designed for creating smooth surfaces on super-elevated curves. It covers the operational layout and various state-of-the-art technologies such as slope control, sonic ground sensors, and yo-yo switches that ensure precision in milling and overlay applications. Additionally, potential challenges like uneven surfaces, daylight milling, and shoulder mismatches are discussed. Properly utilizing these systems can enhance ride quality and meet critical roadway profile standards in urban settings.

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Control Systems for Milling Smooth Super-Elevated Curves in Urban Areas

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  1. Equipment Capabilities APPLICATIONS MILLING MACHINE CONTROL SYSTEMS LAYOUT FOR SUPER-ELEVATED CURVES PAVER CONTROLS POTENTIAL PROBLEMS

  2. USING MILL TO REMOVE AND PULVERIZE EXISTING SHOULDER

  3. View of the Drum and Teeth

  4. USING THE MILL TO ACHIEVE A SMOOTH RIDE IN URBAN AREAS

  5. PROFILING ROADWAY 1” OVERLAY

  6. A1A @ DUNLAWTON AVE

  7. CONTROL SYSTEMS • SLOPE CONTROL • ENDGATES AND THE YO-YO SWITCH • SONIC GROUND SENSOR • SINIC SKI

  8. YO-YO SWITCH ATTACHED TO THE ENDGATE

  9. SENSOR SETTING FOR DEPTH

  10. MILLING CROSS-SLOPE

  11. CROSS-SLOPE MILLING

  12. CROSS-SLOPE REACTING TO SLOPE CHANGE

  13. HOW THE MILLING OPERATOR CUTS A SUPERELEVATED CURVE

  14. Milling around curves, manholes and multiple passes

  15. PROBLEMS THAT CAN OCCUR • ENDGATE/ SENSOR RUNS OFF UNEVEN SURFACE • DAYLIGHT MILL DUE TO VARYING CROSS-SLOPE • MILL INTO LIMEROCK BASE • DROP-OFF BETWEEN ADJACENT TRAFFIC LANES • EXISTING SHOULDER DOESN’T MATCH NEW FINISH GRADE • USING WRONG STATION FOR START OF SUPERELEVATION

  16. PAVING CONTROLS

  17. THE CONTROL SYSTEM OPERATES A HYDRAULIC CYLINDER THAT CHANGES THE ANGLE OF ATTACK OF THE SCREED

  18. A PAIR OF SCREWS ARE ALSO USED TO MANUALLY ADJUST THE THICKNESS OF THE PAVING

  19. PAVER SLOPE CONTROL

  20. SONIC SLOPE CONTROL

  21. SKI POLE FOR PAVER

  22. RIGID STRAIGHTEDGE

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