CRCP-2, AN IMPROVED COMPUTER PROGRAM FOR THE ANALYSIS OF CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS

CRCP-2 is an extension and revision of the CRCP-1 computer solution for the analysis of continuously reinforced concrete pavement (reported in Research Report NCHRP 1-15). It improves the proficiency and extends the capability of the original model. Small errors in CRCP-1 for extreme values of variable combinations, such as a high-friction value and a high steel percentage, were remedied by extending the original steel stress model to cover situations where development length under the influence of high frictional resistance might exceed half the crack spacing. The stress-strength interaction model in CRCP-1 has been revised such that the maximum concrete stress under minimum temperature is compared with the concrete strength at the time of minimum temperature occurrence, thus allowing for additional strength gain in the concrete. Wheel load and wheel-load stress are included in CRCP-1 as new design variables for when the combined effect of the bending stress under wheel load and the in-plane stress under environmental load are considered. Some minor changes were made in the computer program. In order to be compatible with the mathematical model, which requires at least one increment be contained in the bond slip zone, the initial slab length was adjusted inside the program to ensure that the increment length is within tolerance limits while maintaining the dimensional array for the slab length to one hundred increments. Thus, the computation time was substantially reduced, and errors at high-level studies were eliminated. The revision of the CRCP-1 model and the inclusion of wheel load, provide better predictions of the behavior of CRC pavement. However, to fully portray the state-of-stress in a slab, fatigue due to repetitions of load and warping stress due to temperature differential need to be considered.

• Corporate Authors:

  University of Texas, Austin

  Center for Highway Research, 200 West 21st Street
  Austin, TX  United States  78712
• Authors:
  • Ma, Jiaqi
  • 0000-0002-8184-5157
  • McCullough, B F
• Publication Date: 1977-8

Media Info

• Pagination: 174 p.

Subject/Index Terms

• TRT Terms: Computer programs; Continuously reinforced concrete pavements; Cracking; Fatigue (Physiological condition); Friction; Mathematical models; Steel; Strength of materials; Stresses; Temperature; Wheel loads
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00178787
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA-TX-78-177-9 Intrm Rpt., FCP 45D2-424
• Contract Numbers: Study 3-8-75-177
• Files: TRIS, USDOT
• Created Date: Sep 14 1978 12:00AM