Analysis of Large Vehicle Interference on Transiting Test for Measuring Building Wind Pressure Coefficient

Abstract

As a new method for structural wind engineering research, the transiting test has good application prospects. However, in the road environment, the experimental results will inevitably be influenced by other vehicles (especially larger vehicles). In this paper, a large vehicle was set as an interference vehicle to drive in specific conditions, and the symmetrical CAARC standard model was used to investigate the large vehicle’s interference on the transiting test method for measuring building wind pressure coefficient. The results indicate that the wind pressure coefficient time history will appear as a clear up and down undulation phenomenon during the overtaking interference period instead of the single convex phenomenon. The mean wind pressure coefficient in the negative pressure area during the overtaking interference period is lower than that in the no-interference situation. The overtaking interference features are clear and easy to distinguish, and the interference duration is long (more than 6 s). In contrast, the overtaking interference when the test vehicle is overtaken is greater. For following driving, the wake of the large vehicle no longer interferes with the transiting test results after the vehicle spacing exceeds 70 m.

Keywords

• CAARC standard model
• large vehicle
• overtaking interference
• wake interference
• transiting test