A method for rapid evaluation of vehicle loading deck structure under wheel print load

Abstract

The present application relates to a kind of wheel mark load under the method for quickly evaluating vehicle loading deck structure, on the basis of investigating vehicle wheel mark size and wheel mark load, set the combination of different wheel mark length and width, so that it can cover existing vehicle wheel mark size;Based on the strength criterion of vehicle loading deck specification, for different wheel mark size combination, respectively calculate the stress of deck plate and longitudinal bone, find the corresponding wheel mark load when it reaches allowable stress, which is used as the maximum bearing load of deck plate and longitudinal bone;Give the maximum bearing load of vehicle loading deck plate and longitudinal bone under different wheel mark size combination, draw chart with the result, the chart reflects the maximum bearing capacity of the vehicle loading deck of the ship;According to the wheel mark size of new vehicle or temporary vehicle on the ship, respectively interpolation obtains the maximum bearing load of deck plate and longitudinal bone under the same wheel mark size, compare with the wheel mark load size of new vehicle or temporary vehicle on the ship, can quickly evaluate the strength of vehicle loading deck structure.

Description

Technical Field

[0001] This invention relates to a vehicle loading deck structure for ships, and more specifically to a method for evaluating vehicle loading deck structures under wheel imprint loads. Background Technology

[0002] The vehicle loading deck is the most important functional structure of roll-on / roll-off ships and other vessels primarily used for carrying vehicles, and it is also a key focus and challenge in the structural strength assessment of such ships. The vehicle loading deck mainly bears the wheel imprint loads of the vehicles being loaded.

[0003] The so-called wheel imprint load refers to the vehicle's weight load borne by the entire contact area between the vehicle's tires and the deck, such as... Figure 1 As shown. On the one hand, the contact area between the tire and the deck is very small, typically a tire mark is between 200mm and 400mm in length and width; on the other hand, the loaded vehicles are relatively heavy, usually exceeding 20 tons. The characteristics of tire mark loads are a small contact area and high pressure. Under tire mark loads, the local stress on the vehicle-loaded deck structure is high, and local strength problems are prominent.

[0004] For vessels with vehicle loading decks in operation, a common scenario involves loading new or temporary vehicles. The replacement cycle for vehicles is shorter than that for the vessel itself, and from a practical standpoint, loading temporary vehicles is very common. Therefore, the weight of the currently loaded vehicles is highly likely to exceed the wheel imprint load considered in the vessel's design. The vehicle loading deck structure may not meet the loading requirements for new or temporary vehicles. Therefore, assessing the structural strength of the vehicle loading deck under wheel imprint load is of significant practical importance for ensuring the safety of the hull structure and the safe operation of the vessel.

[0005] Existing methods for assessing the structural strength of vehicle loading decks include standard verification methods and direct calculation methods. Standard verification methods involve calculating parameters such as the minimum plate thickness and minimum longitudinal rib section modulus required to meet requirements, based on the relevant chapters of the corresponding standards for vehicle loading deck structural design. These parameters are then compared with actual vehicle loading deck structural data. Direct calculation methods utilize finite element numerical simulation to directly establish a model of the vehicle loading deck structure. This model is then subjected to load calculations and analysis to obtain data on stress, deformation, etc., which are then compared with standard criteria to determine whether the structural strength meets the requirements.

[0006] When using standardized verification methods to evaluate vehicle loading deck structures, it is necessary to understand the details of the relevant specifications, such as the meaning of each parameter and the method of value determination. Calculation errors are prone to occur when the calculation formulas are complex and there are many parameters. When using direct calculation methods to evaluate vehicle loading deck structures, a finite element numerical simulation model needs to be established. To ensure calculation accuracy, the number of model elements is often enormous, resulting in significant calculation time. Furthermore, when there are many operating conditions, the load application methods are complex and varied.

[0007] Both standardized verification methods and direct calculation methods require assessors to possess strong professional knowledge and skills. Furthermore, direct calculation methods necessitate the establishment and calculation of a finite element numerical simulation model, making the assessment process complex and time-consuming. This invention aims to find a method for assessing the strength of vehicle loading deck structures under wheel imprint loads, enabling rapid and reusable use and reducing the time spent by assessors. Simultaneously, it allows users to apply the method without requiring extensive professional knowledge. Summary of the Invention

[0008] The present invention proposes a rapid evaluation method for vehicle loading deck structures under wheel imprint loads, mainly to solve the problems of high professional requirements, complex evaluation process, and long calculation time in the strength evaluation of vehicle loading deck structures under wheel imprint loads, and to achieve rapid evaluation of the strength of vehicle loading deck structures.

[0009] To achieve the above objectives, the technical solution of this invention is: a method for rapid evaluation of vehicle loading deck structures under wheel imprint loads. First, based on an investigation of vehicle wheel imprint dimensions and loads, different combinations of wheel imprint lengths and widths are set to cover existing vehicle wheel imprint dimensions. Based on the strength criterion of vehicle loading deck specifications, the stress on the deck plate and longitudinal ribs is calculated for different wheel imprint size combinations. The wheel imprint load corresponding to the allowable stress is found and used as the maximum bearing load of the deck plate and longitudinal ribs. Then, the maximum bearing load of the vehicle loading deck plate and longitudinal ribs under different wheel imprint size combinations is given, and the results are plotted in a graph. This graph reflects the maximum bearing capacity of the ship's vehicle loading deck and can be reused. Finally, based on the wheel imprint dimensions of new vehicles or temporary loading vehicles, the maximum bearing load of the deck plate and longitudinal ribs under the same wheel imprint dimensions is obtained by interpolation. By comparing this with the wheel imprint load of the new vehicles or temporary loading vehicles, the structural strength of the vehicle loading deck can be quickly evaluated.

[0010] Furthermore, the setting of different combinations of wheel imprint length and width, so that the combination can cover the existing vehicle wheel imprint size, adopts a vehicle wheel imprint size statistics table, and determines the range of different vehicle wheel imprint size combinations based on the statistics table, which serves as the effective area for calculating wheel imprint load.

[0011] Furthermore, based on the strength criteria of the vehicle loading deck specification, the allowable stress [σ1] of the deck plate and the allowable stress [σ2] of the deck longitudinal ribs are determined.

[0012] Furthermore, the maximum load-bearing capacity of the vehicle loading deck plate and the maximum load-bearing capacity of the longitudinal rib under different wheel imprint size combinations are obtained through finite element analysis, and curves of the maximum load-bearing capacity of the deck plate and the longitudinal rib versus the wheel imprint length and width are established.

[0013] Furthermore, the finite element calculation and analysis adopts the method of establishing a finite element calculation model of the vehicle loading deck and applying boundary constraints.

[0014] Furthermore, the specific method for calculating the maximum load-bearing capacity of the vehicle's loading deck is as follows:

[0015] (1) Apply the wheel imprint load to the center of the plate grid of the vehicle loading deck. The initial wheel imprint load is set to 1t. Calculate the deck plate response under different wheel imprint sizes to obtain the vehicle loading deck plate stress under 1t wheel load for different wheel imprint sizes.

[0016] (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress [σ1] of the deck plate under different wheel mark sizes is obtained by proportional conversion, which is the maximum bearing load of the deck plate.

[0017] Furthermore, the curve of the maximum load-bearing capacity of the deck plate versus the wheel track length and width is established by plotting the wheel track length as the X-axis and the maximum load-bearing capacity of the deck plate as the Y-axis, and then plotting the curves for different wheel track widths to obtain the maximum load-bearing capacity of the deck plate.

[0018] Furthermore, the specific method for calculating the maximum load-bearing capacity of the vehicle's loading deck longitudinal ribs is as follows:

[0019] (1) Apply the wheel imprint load to the center of the longitudinal rib of the vehicle loading deck. The initial wheel imprint load is set to 1t. Calculate the longitudinal rib response under different wheel imprint sizes to obtain the stress of the longitudinal rib of the vehicle loading deck under 1t wheel load for different wheel imprint sizes.

[0020] (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress [σ2] of the deck longitudinal rib under different wheel mark sizes can be obtained by proportional conversion, which is the maximum bearing load of the deck longitudinal rib.

[0021] Furthermore, the curve of the maximum load-bearing capacity of the deck longitudinal rib versus the wheel track length and width is obtained by plotting the wheel track length as the X-axis and the maximum load-bearing capacity of the deck longitudinal rib as the Y-axis, and plotting the curve under different wheel track widths.

[0022] Furthermore, the specific method for rapidly assessing the structural strength of the vehicle loading deck is as follows:

[0023] (1) Determine the wheel imprint length a0, width b0 and wheel imprint load P0 of the new vehicle or the temporary vehicle on board.

[0024] (2) Based on the curve of the maximum load-bearing capacity of the deck plate, interpolation is performed on the wheel imprint length a0 and width b0 to obtain the maximum load-bearing capacity P of the deck plate loaded on the vehicle. 1maxBy comparing the load with the wheel imprint load P0, it can be determined whether the deck plate can meet the load-bearing requirements.

[0025] (3) Based on the curve of the maximum load-bearing capacity of the longitudinal deck ribs, interpolation is performed on the wheel imprint length a0 and width b0 to obtain the maximum load-bearing capacity P of the vehicle loaded with the longitudinal deck ribs. 2max By comparing the load with the wheel imprint load P0, it can be determined whether the longitudinal girders of the deck can meet the load-bearing requirements.

[0026] The beneficial effects of this invention are as follows:

[0027] (1) A rapid evaluation method for vehicle loading deck structures under wheel imprint load is proposed;

[0028] (2) The method proposed in this invention, which establishes a maximum load-bearing load curve and performs interpolation verification, effectively avoids the problems of high professional requirements, complex evaluation process, and long calculation time in the strength assessment of vehicle loading deck structure when operating ships load new vehicles or temporarily board vehicles.

[0029] (3) The method proposed in this invention, which establishes the maximum load-bearing capacity curve and performs interpolation verification, is quick, simple and easy to use. For a specific vehicle loading deck, only the curve needs to be determined through calculation and analysis at the beginning, and it can be reused repeatedly in subsequent use.

[0030] In summary, this invention proposes a rapid evaluation method for vehicle loading deck structures under wheel imprint loads. The maximum load-bearing capacity of the deck plate and longitudinal ribs under different wheel imprint sizes is obtained through finite element analysis. Curves of the maximum load-bearing capacity of the deck plate and longitudinal ribs versus the wheel imprint length and width are established. By interpolating the wheel imprint load parameters of operating vessels loading new vehicles or temporarily loaded vehicles, the strength of the deck structure can be rapidly evaluated. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the vehicle wheel track load;

[0032] Figure 2 This is a schematic diagram illustrating the application of wheel imprint loads on the vehicle's loading deck.

[0033] Figure 3 yes Figure 2 A sectional view along the middle AA;

[0034] Figure 4 This is a schematic diagram illustrating the application of loads to the longitudinal wheel imprints on the vehicle loading deck.

[0035] Figure 5 yes Figure 4 A sectional view along the middle edge BB;

[0036] Figure 6 The maximum load capacity P of the vehicle's loading deck plate for different wheel imprint sizes.1max Line graph;

[0037] Figure 7 The maximum load capacity P of the vehicle's loading deck longitudinal ribs for different wheel imprint sizes. 2max Line graph. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and examples.

[0039] The present invention provides a rapid evaluation method for vehicle loading deck structures under wheel imprint loads, the overall technical concept of which is as follows:

[0040] Based on the investigation of vehicle wheel mark dimensions and loads, different combinations of wheel mark lengths and widths were established, as shown in Table 1, to cover existing vehicle wheel mark dimensions. Based on the strength criteria of the vehicle loading deck specifications, the stresses on the deck plate and longitudinal ribs were calculated for different wheel mark size combinations. The wheel mark loads corresponding to the allowable stresses were identified and used as the maximum load-bearing capacities of the deck plate and longitudinal ribs. Then, the maximum load-bearing capacities of the vehicle loading deck plate and longitudinal ribs under different wheel mark size combinations were presented in a chart. This chart reflects the maximum load-bearing capacity of the ship's vehicle loading deck and can be reused. Finally, based on the wheel mark dimensions of new vehicles or temporarily loaded vehicles, the maximum load-bearing capacities of the deck plate and longitudinal ribs under the same wheel mark dimensions were interpolated. Comparing these values ​​with the wheel mark loads of new vehicles or temporarily loaded vehicles allows for a rapid assessment of the vehicle loading deck structural strength.

[0041] Table 1 Vehicle wheel mark sizes

[0042]

[0043] The basic process and method of this invention are as follows:

[0044] Step 1: Vehicle wheel track size range

[0045] (1) Determine the range of different vehicle wheel imprint size combinations according to Table 1, as the effective area for calculating wheel imprint load;

[0046] Step 2: Vehicle Loading Deck Specifications and Standards

[0047] (1) Based on the strength criteria of the vehicle loading deck specification, determine the allowable stress [σ1] of the deck plate.

[0048] (2) Based on the strength criteria of the vehicle loading deck specification, determine the allowable stress [σ2] of the longitudinal stiffeners of the deck.

[0049] Step 3: Finite element model of vehicle loading deck

[0050] Establish a finite element calculation model of the vehicle loading deck and apply boundary constraints.

[0051] Step 4: Maximum load capacity of the vehicle's loading deck.

[0052] (1) Apply the wheel imprint load to the center of the plating on the vehicle loading deck, such as Figure 2 As shown in Figure 3, the initial wheel imprint load was set to 1t, and the wheel imprint dimensions are shown in Table 1. The deck plate response under different wheel imprint dimensions was calculated to obtain the vehicle loading deck plate stress under a 1t wheel load for different wheel imprint dimensions.

[0053] (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress [σ1] of the deck plate under different wheel mark sizes can be obtained by proportional conversion, which is the maximum bearing load of the deck plate.

[0054] (3) Using the length of the vehicle wheel track as the X coordinate and the maximum load on the deck plate as the Y coordinate, a curve is plotted for different wheel track widths to obtain the curve of the maximum load on the deck plate.

[0055] Step 5: Maximum load-bearing capacity of the vehicle's loading deck longitudinal ribs

[0056] (1) Apply the wheel imprint load to the center of the longitudinal ribs of the vehicle loading deck, such as Figure 4 As shown in Figure 5, the initial wheel imprint load was set to 1t, and the wheel imprint dimensions are shown in Table 1. The longitudinal stiffener response of the deck under different wheel imprint dimensions was calculated to obtain the stress of the longitudinal stiffener of the vehicle loading deck under a 1t wheel load for different wheel imprint dimensions.

[0057] (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress [σ2] of the deck longitudinal rib under different wheel mark sizes can be obtained by proportional conversion, which is the maximum bearing load of the deck longitudinal rib.

[0058] (3) Using the length of the vehicle wheel track as the X coordinate and the maximum load of the deck longitudinal rib as the Y coordinate, a curve is plotted for different wheel track widths to obtain the curve of the maximum load of the deck longitudinal rib.

[0059] Step 6: Rapid assessment of the structural strength of the vehicle loading deck

[0060] (1) Determine the wheel imprint length a0, width b0 and wheel imprint load P0 of the new vehicle or the temporary vehicle on board.

[0061] (2) Based on the curve of the maximum load-bearing capacity of the deck plate obtained in step 4 (3), interpolate the wheel imprint length a0 and width b0 to obtain the maximum load-bearing capacity P of the deck plate loaded on this vehicle. 1max By comparing the load with the wheel imprint load P0, it can be determined whether the deck plate can meet the load-bearing requirements.

[0062] (3) Based on the curve of the maximum load-bearing capacity of the longitudinal deck ribs obtained in step 5 (3), interpolate the wheel imprint length a0 and width b0 to obtain the maximum load-bearing capacity P of the longitudinal deck ribs loaded on this vehicle. 2max By comparing the load with the wheel imprint load P0, it can be determined whether the longitudinal girders of the deck can meet the load-bearing requirements.

[0063] Steps 1, 2, and 3 are the preparation stage; steps 4 and 5 are the core part, focusing on determining the curve of the maximum load-bearing capacity of the vehicle's loading deck and longitudinal ribs relative to the wheel track length and width, to facilitate interpolation applications; and step 6 is the application part.

[0064] Specific embodiments of the present invention are as follows:

[0065] Taking a vehicle loading deck as an example, its parameters are as follows: the material of the vehicle loading deck structure is CCSDH36 steel, its yield strength is 355MPa, and its elastic modulus is E=2.06×10 5 MPa. Deck thickness t = 12mm, longitudinal girder span (grid length) l = 2.4m, longitudinal girder spacing (grid width) s = 0.6m, longitudinal girder is HP180X9. The dimensions of the strong crossbeams and longitudinal girder are...

[0066] Step 1: Vehicle wheel track size range

[0067] (1) Determine the range of different vehicle wheel imprint size combinations according to Table 1, as the effective area for calculating wheel imprint load.

[0068] Step 2: Vehicle Loading Deck Specifications and Standards

[0069] (1) Based on the strength criteria of the vehicle loading deck specification, determine the allowable stress [σ1] of the deck plate.

[0070] (2) Based on the strength criteria of the vehicle loading deck specification, determine the allowable stress [σ2] of the longitudinal stiffeners of the deck.

[0071] Step 3: Finite element model of vehicle loading deck

[0072] A finite element model of the vehicle loading deck was established, with the model range including the spacing of three longitudinal ribs and the span of three longitudinal ribs. The intermediate plate grid was examined. The deck plate, strong crossbeams, and longitudinal girder webs were constructed using two-dimensional SHELL elements, while the deck longitudinal ribs, strong crossbeams, and longitudinal girder panels were constructed using one-dimensional BEAM elements, with simply supported boundary constraints applied.

[0073] Step 4: Maximum load capacity of the vehicle's loading deck.

[0074] (1) Apply the wheel imprint load as a uniformly distributed load to the center of the plating on the vehicle loading deck, such as Figure 2 As shown in Table 1, the initial wheel imprint load was set to 1t, and the wheel imprint dimensions are shown in Table 2. The deck plate response under different wheel imprint dimensions was calculated, and the vehicle loading deck plate stress σ1 under the 1t wheel imprint load was obtained for different wheel imprint dimensions, as shown in Table 2.

[0075] Table 2. Stress σ1 of vehicle loading deck plate under 1t wheel imprint load for different wheel imprint sizes.

[0076]

[0077] (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress [σ1] of the deck plate under different wheel mark sizes can be obtained by proportional conversion using equation (1), which is the maximum bearing load P of the deck plate. 1max As shown in Table 3,

[0078]

[0079] Table 3 Maximum load capacity P of vehicle-loaded deck plating for different wheel mark sizes 1max Unit: tons

[0080] (3) Taking the vehicle wheel track length a as the X coordinate, the maximum load P of the deck plate. 1max Using the Y-axis as the coordinate, plotting curves for different wheel imprint widths b yields the curve of the maximum load-bearing capacity of the deck plate. Figure 6 As shown.

[0081] Step 5: Maximum load-bearing capacity of the vehicle's loading deck longitudinal ribs

[0082] (1) Apply the wheel imprint load as a uniformly distributed load to the center of the longitudinal ribs of the vehicle loading deck, such as Figure 3 As shown in Table 1, the initial wheel imprint load was set to 1t, and the wheel imprint dimensions are shown in Table 1. The longitudinal stiffener response of the deck under different wheel imprint dimensions was calculated, and the stress σ2 of the longitudinal stiffener of the vehicle loading deck under the 1t wheel load was obtained for different wheel imprint dimensions, as shown in Table 4.

[0083] Table 4. Stress σ2 of longitudinal stiffener on vehicle loading deck under 1t wheel imprint load for different wheel imprint sizes.

[0084]

[0085] (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress [σ2] of the deck longitudinal girder under different wheel mark sizes can be obtained by proportional conversion using equation (2), which is the maximum bearing load P of the deck longitudinal girder. 2max .

[0086] As shown in Table 5.

[0087]

[0088] Table 5 Maximum load capacity P of vehicle loading deck longitudinal ribs for different wheel imprint sizes 2max Unit: tons

[0089]

[0090] (3) With the vehicle wheel track length a as the X coordinate, the maximum load P of the deck longitudinal rib. 2max Using the Y-axis as the coordinate, plotting curves for different wheel imprint widths b yields the curve of the maximum load-bearing capacity of the deck longitudinal girder. Figure 7 As shown.

[0091] Step 6: Rapid assessment of vehicle loading deck strength

[0092] (1) Determine the parameters of new vehicles or temporary vehicles loaded on board the ship during operation, assuming that their wheel imprint length a0 = 250 mm, width b0 = 350 mm, and wheel imprint load P0 = 6.7 t.

[0093] (2) Based on the curve of the maximum load-bearing capacity of the deck plate obtained in step 4 (3), interpolation is performed on the wheel imprint length a0 = 250 mm and width b0 = 350 mm to obtain the maximum load-bearing capacity P of the deck plate loaded on this vehicle. 1max =14.6t. Compared with the wheel imprint load P0=6.7t, the maximum load capacity of the deck plate is greater than the wheel imprint load, and the deck plate can meet the load-bearing requirements.

[0094] (3) Based on the curve of the maximum load-bearing capacity of the longitudinal deck ribs obtained in step 5 (3), interpolation is performed on the wheel imprint length a0 = 250 mm and width b0 = 350 mm to obtain the maximum load-bearing capacity P of the longitudinal deck ribs loaded on this vehicle. 2max =15.2t. Compared with the wheel imprint load P0=6.7t, the maximum bearing capacity of the deck longitudinal rib is greater than the wheel imprint load, and the deck longitudinal rib can meet the bearing requirements.

Claims

1. A method for rapid evaluation of vehicle-loaded deck structures under wheel imprint load, wherein the wheel imprint load is the vehicle weight load borne by all tires in contact area with the deck, characterized in that: First, based on the investigation of vehicle wheel mark dimensions and loads, different combinations of wheel mark lengths and widths are established to cover existing vehicle wheel mark dimensions. Based on the strength criterion of the vehicle loading deck specifications, the stress on the deck plate and longitudinal ribs is calculated for different wheel mark size combinations. The wheel mark load corresponding to the allowable stress is then used as the maximum load-bearing capacity of the deck plate and longitudinal ribs. Next, the maximum load-bearing capacity of the vehicle loading deck plate and longitudinal ribs under different wheel mark size combinations is given, and the results are plotted in a graph. This graph reflects the maximum load-bearing capacity of the ship's vehicle loading deck and is reusable. Finally, based on the wheel mark dimensions of new vehicles or temporarily loaded vehicles, the maximum load-bearing capacity of the deck plate and longitudinal ribs under the same wheel mark dimensions is obtained by interpolation. By comparing this load with the wheel mark load of new vehicles or temporarily loaded vehicles, the structural strength of the vehicle loading deck can be quickly assessed.

2. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 1, characterized in that: The method involves setting different combinations of wheel imprint length and width to cover existing vehicle wheel imprint sizes. A vehicle wheel imprint size statistics table is used to determine the range of different vehicle wheel imprint size combinations, which is then used to calculate the effective area of ​​the wheel imprint load.

3. The rapid evaluation method for vehicle loading deck structures under wheel imprint loads according to claim 1, characterized in that: The allowable stress of the deck plate is determined based on the strength criterion of the vehicle loading deck specification. Determine the allowable stress of the longitudinal skeleton of the deck. .

4. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 1, characterized in that: The maximum load-bearing capacity of the vehicle's loading deck plate and the maximum load-bearing capacity of the longitudinal ribs under different wheel imprint size combinations were obtained through finite element analysis, and curves of the maximum load-bearing capacity of the deck plate and longitudinal ribs as a function of wheel imprint length and width were established.

5. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 4, characterized in that: The finite element calculation analysis adopts the method of establishing a finite element calculation model of the vehicle loading deck and applying boundary constraints.

6. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 4, characterized in that: The specific method for calculating the maximum load-bearing capacity of the vehicle's loading deck: (1) Apply the wheel imprint load to the center of the plate grid of the vehicle loading deck. The initial wheel imprint load is set to 1t. Calculate the deck plate response under different wheel imprint sizes to obtain the vehicle loading deck plate stress under 1t wheel load for different wheel imprint sizes. (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress of the deck plate under different wheel imprint sizes is obtained by proportional conversion. The corresponding wheel imprint load is the maximum load-bearing capacity of the deck plate.

7. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 4, characterized in that: The curve of the maximum load-bearing capacity of the deck plate with respect to the length and width of the wheel track is established by plotting the wheel track length as the X-axis and the maximum load-bearing capacity of the deck plate as the Y-axis, and plotting the curve under different wheel track widths.

8. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 4, characterized in that: The specific method for calculating the maximum load-bearing capacity of the vehicle's loading deck longitudinal ribs is as follows: (1) Apply the wheel imprint load to the center of the longitudinal rib of the vehicle loading deck. The initial wheel imprint load is set to 1t. Calculate the longitudinal rib response under different wheel imprint sizes to obtain the stress of the longitudinal rib of the vehicle loading deck under 1t wheel load for different wheel imprint sizes. (2) Considering that the load and stress satisfy a linear relationship during the calculation process, the allowable stress of the longitudinal girder of the deck under different wheel imprint sizes can be obtained by proportional conversion. The corresponding wheel mark load is the maximum load-bearing capacity of the deck longitudinal rib.

9. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 4, characterized in that: The curve of the maximum load-bearing capacity of the deck longitudinal rib versus the wheel track length and width is obtained by plotting the wheel track length as the X-axis and the maximum load-bearing capacity of the deck longitudinal rib as the Y-axis, and plotting the curve under different wheel track widths.

10. The rapid evaluation method for vehicle loading deck structure under wheel imprint load according to claim 1, characterized in that: The specific method for rapidly assessing the structural strength of the vehicle loading deck is as follows: (1) Determine the wheel imprint length a0, width b0 and wheel imprint load P0 of the new vehicle or the temporary vehicle on board; (2) Based on the curve of the maximum load-bearing capacity of the deck plate, interpolation is performed on the wheel imprint length a0 and width b0 to obtain the maximum load-bearing capacity P of the deck plate loaded on the vehicle. 1max By comparing the load with the wheel imprint load P0, it can be determined whether the deck plate can meet the load-bearing requirements. (3) Based on the curve of the maximum load-bearing capacity of the longitudinal deck ribs, interpolation is performed on the wheel imprint length a0 and width b0 to obtain the maximum load-bearing capacity P of the vehicle loaded with the longitudinal deck ribs. 2max By comparing the load with the wheel imprint load P0, it can be determined whether the longitudinal girders of the deck can meet the load-bearing requirements.

Images