Use of Benkelman Beam Deflection to Determine Allowable Spring Tonnages

摘要

The purpose of this special report is to present a method of establishing allowable tonnages for Minnesota highways using data obtained from the three years of spring recovery testing on Investigation 183 test sections. At the present time the plate load test is used to determine tonnages. It is felt that if the beam deflection test could be established as a good tool for setting tonnages then a greater mileage of roads could be tested each year and a better idea of the amount of variation along a road could be obtained. It is felt that the data used to formulate the procedure to be presented are complete enough to make the method reliable, but that the Minnesota Highway Department should continue to make spring recovery tests in order to verify and or modify the relationships presented in this report. (Author)