Why should the vehicle load be reduced vertically and horizontally?

For example, if there are four lanes, the probability that four cars will cross the bus at the same time will be reduced, that is to say, perpendicular to the lane direction, generally only one car will cross at the same time. So, in order to avoid waste, you can multiply it by a factor to reduce the load.

If there are three lanes on the bridge, it is very rare to fill all three lanes with vehicles, so in order to minimize unnecessary waste, a reduction factor of 0.7 will be adopted in the design, which is closer to the reasonable design (of course, this is also a statistic).

Of course, even if there is a full three-lane car, the design takes into account the surplus and can bear it in a short time. Since the vehicle load shedding is considered, of course, the lateral and longitudinal load shedding of the bridge is also considered.

There are many kinds of vehicles running on the bridge, such as cars, flat trailers, tracked vehicles and road rollers. And all kinds of vehicles have different opportunities on the bridge. Take the frequent and huge fleet as the vehicle load; Occasionally, tracked vehicles and flat trailers appear alone as the loads of tracked vehicles and flat trailers. The calculated load is automobile load, and the check load is tracked vehicle and flat trailer load.

If you want to measure the dynamic load of vehicles, you can only use DOK-Y203 high-speed dynamic weighing system to automatically detect and calculate the vehicle load during the actual operation of the bridge without disturbing the normal traffic. If the static load is more theoretical data, then the dynamic load is the actual dynamic pressure after the bridge is completed.