为了适应工程建殷中特殊繁重运输的需要,广东省的公路桥梁曾采用跳板法通过18吨重车和50吨平板车,现在介绍如下: 一、跳板的作用跳板置于桥上,它只承受该桥所不能承受的剩余载重,并据以设计跳板的断面,根据断面尺寸,以方木将跳板拼成一个整体,如图1所示。跳板底面与桥面的净距应为跳板的允许挠度,使跳板因受力而产生弯曲时,板底面即与桥面接触,并将一部分载重传给桥面,这部分载重应适 In order to meet the special needs of heavy construction in the construction of Yin, the highway bridges in Guangdong Province have adopted the springboard method of passing 18 tons of heavy vehicles and 50 tons of flatbed trucks, are described below: First, the role of springboard Springboard placed on the bridge, which only bear the Bridge can not afford the remaining load, and according to the design of the springboard section, according to the section size, square wooden springboard into a whole, as shown in Figure 1. The clearance between the bottom of the springboard and the deck should be the allowable deflection of the springboard. When the springboard is bent due to the force, the bottom surface of the springboard comes into contact with the deck, and a part of the load is transmitted to the deck. This part of the load should be suitable