题名: |
Development of a Procedure for the Structural Evaluation of Superheavy Load Routes; Research rept. (Final) Jan 93-1995.8 |
作者: |
Jooste, F. J.; Fernando, E. G. |
关键词: |
Pavement damage; Load bearing capacity; Structural analysis; Pavement strength; Pavement loading; Strength(Mechanics); Loads(Forces); Loading(Mechanical); Sensitivity analysis; Failure; Yield strength; Finite element method |
摘要: |
Recent years have seen an increasing number of superheavy load moves over the Texas State Highway system. Prior to this research project, TxDOT did not have a procedure for evaluating the damage potential under superheavy loads. The analysis of pavement response under superheavy loads concerns the potential for rapid, load-induced failure rather than long-term failure induced by fatigue. In this study, researchers developed a procedure to evaluate the pavement response under superheavy loads and the potential for pavement damage using the Mohr-Coulomb failure criterion. Based on the results of the investigations, researchers developed a two-staged procedure for routine evaluation of the potential for pavement damage under superheavy loads. The first stage analyis makes use of charts that provide the user with the maximum wheel load that can be sustained by a given pavement. The second stage analysis is more accurate and makes use of computer program in which more detailed information such as backcalculated moduli can be used. This report documents the development of the procedure for permitting superheavy load moves. |
总页数: |
282p |
报告类型: |
科技报告 |