Why should the vehicle load be reduced in the longitudinal and horizontal directions?

For example, if there are four lanes, the probability of four cars making the wrong car at the same time will be reduced, that is, perpendicular to the direction of the lane, there is generally only one car at the same time. Therefore, in order to avoid waste, the load can be reduced by multiplying by a factor.

If the bridge is a three-lane bridge, it is very rare to have three lanes full of vehicles, so in order to minimize unnecessary waste, a reduction factor will be used in the design, which is closer to a reasonable design (of course, this is also a statistic).

Of course, even if there is really a fully loaded three-lane road, the design is designed with the surplus in mind, and it can withstand it in a short time Since the vehicle load reduction is considered, of course, the transverse and longitudinal parts of the bridge are also considered at the same time.

There are many types of vehicles driving on bridges, including cars, flatbed trailers, tracked vehicles, road rollers, etc., and the opportunities for various types of vehicles on bridges are different. Frequently and massively appear as a vehicle load; Crawler trucks and flatbed trailers that appear occasionally and individually are used as tracked trucks and flatbed trailer loads. The calculation load is the vehicle load, and the check load is the crawler truck and flatbed trailer load.

If the dynamic load of the vehicle is to be measured, the DOK-Y203 high-speed dynamic weighing system can only be used to automatically detect and calculate the vehicle load during the actual operation of the bridge without interfering with normal driving. If the static load is more theoretical data, then the dynamic load is the actual dynamic pressure suffered by the bridge after it is built.

When the wheel load acts on the bridge deck, in addition to the slats that directly bear the load, the board socks adjacent to it along the longitudinal direction also share a part of the load, so it is necessary to enter the hidden belt and line longitudinal folding.

Structural Designer].

1.Why horizontal reduction?

Answer: For example, if there are four lanes, the probability of four cars driving wrong at the same time will be reduced, that is, perpendicular to the direction of the lane, generally only one car at the same time. Therefore, in order to avoid waste, the load can be reduced by multiplying by a factor.

2。Why vertical reduction?

Answer: The longer the bridge, the smaller the probability that the bridge is fully covered with cars, and considering the distance between vehicles, the load is reduced by multiplying a coefficient along the longitudinal section collapse.

Hope it helps!

When the wheel load acts on the bridge deck, in addition to the slats that directly bear the load, the slabs adjacent to it along the longitudinal direction of the swim pure head also share a load of gods, so it is necessary to enter the pants and carry out longitudinal reduction.