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What is the Vehicle Load Classification?

1 Answers

CarlosLynn

07/30/25 1:45am

Vehicle loads are represented by vehicle fleets and are classified into four levels: Vehicle-10, Vehicle-15, Vehicle-20, and Vehicle-Super 20. The numerical value of the load classification indicates the total weight in tons of a single main vehicle. Each fleet level includes only one heavy vehicle, with main vehicles positioned both in front and behind. A heavy vehicle refers to the vehicle with the largest total weight within a specified load classification. Lane loads should be arranged on each designed lane as follows: 1. Longitudinal direction: The standard value of uniformly distributed loads can be arbitrarily intercepted along the bridge's longitudinal direction and fully distributed on the influence line with the same sign that produces the most unfavorable load effect on the structure; the standard value of concentrated load PK acts at the peak of the corresponding influence line. 2. Transverse direction: Both uniformly distributed loads and concentrated loads are uniformly distributed within the 3.5m width of the designed lane. The vehicle load for Highway-I level is represented by a standard vehicle, and its main technical indicators must comply with certain requirements.

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