Method for identifying weights of cars based on dynamic strain of bridges
A technology of vehicle weight and dynamic strain, which is applied to weighing equipment, weighing and measuring devices using elastically deformable components, can solve problems such as high price and damage to road structure, and achieve the effect of low cost of measuring equipment
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Embodiment 1
[0034] as attached figure 1 and 2 As shown, a high-pier long-span continuous rigid-frame bridge on an expressway has a span combination of 12600cm+24000cm+12600cm and a clear lane width of 1100cm. The layout of the bridge facade is shown in figure 1 As shown, two dynamic strain test sections are arranged at the main span L / 4 and 3L / 4, the section spacing is 12000cm, and the layout of the section measuring points is shown in figure 2, one resistive dynamic strain measuring point is arranged in the middle and both sides of the bottom plate (web centerline); 150kN, 200kN, 250kN, 300kN, 350kN, 400kN, 450kN, 500kN and 550kN vehicles are used in the three lanes and different vehicle combinations are used. Car test at 60km / h, 65km / h, 70km / h, 75km / h, 80km / h, 90km / h, 95km / h, 100km / h on the roadway, and the high-speed collector automatically collects the traffic generated by the bridge when the vehicle passes The dynamic strain value ε; and the data is directly transmitted to the on-...
Embodiment 2
[0037] as attached image 3 and 4 As shown, a single-span suspension bridge on an expressway has a span of 61600cm and a clear lane width of 2×1450cm. The layout of the bridge facade is shown in image 3 As shown in , two strain test sections are arranged at 3L / 8 and 5L / 8 of the main span, and the distance between the sections is 15400cm. For the arrangement of section measuring points, see Figure 4 , 5 electromagnetic dynamic strain sensors are arranged in the bottom box of the steel box girder; 150kN, 200kN, 250kN, 300kN, 350kN, 400kN, 450kN, 500kN and 550kN vehicles are used in 6 lanes and different vehicle combinations are used, and 60km / h, 65km / h , 70km / h, 75km / h, 80km / h, 90km / h, 95km / h, 100km / h, 105km / h, 110km / h, 115km / h and 120km / h speed in the roadway sports car test, collected by high-speed The device and memory automatically collect and record the dynamic strain value ε generated by the bridge when the vehicle passes by; use wireless communication to directly tran...
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