Data processing apparatus, evaluation system, method, storage medium and program product

Abstract

The present disclosure provides a data processing device, a bridge stiffness evaluation system, a data processing method, a bridge stiffness evaluation method, a storage medium and a computer program product, which first determines the position-displacement mapping relationship between a plurality of positions of the stiffening beam of the suspension bridge and the lateral displacement under the action of the transverse wind load, then determines the position-stress mapping relationship between the plurality of positions and the stress through the position-displacement mapping relationship and the displacement-stress mapping relationship, then determines the maximum stress position point in the plurality of positions according to the position-stress mapping relationship, and finally determines the transverse deflection-span ratio limit value of the stiffening beam through the operation relationship between the maximum stress position point and the corresponding maximum stress value, the operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement, and the stress limit value of the stiffening beam.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of computer, in particular to a data processing device, a bridge stiffness evaluation system, a data processing method, a bridge stiffness evaluation method, a storage medium and a computer program product. BACKGROUND

[0002] Suspender bridge is a flexible structure system with cable as the main load-bearing component. With the increase of bridge span, the bridge stiffness and damping decrease, and the bridge is more sensitive to dynamic action. The structural stiffness is the ability of the structure to resist deformation, and reasonable stiffness index and limit value are the premise of structural safety, driving safety and comfort.

[0003] The bridge design specifications at home and abroad make corresponding provisions for bridge stiffness index and limit value, but since the highway bridge with passing vehicles has relatively low requirements for driving safety and comfort, there are few provisions for lateral stiffness. At present, the value of the lateral stiffness of the suspender bridge is mainly limited by the limit value given in the relevant design specifications. However, the limit value given in the design specification for describing whether the lateral stiffness meets the standard is difficult to accurately reflect the true lateral stiffness limit of the bridge. For example, the value reflecting the lateral stiffness of some bridges is greater than the corresponding limit value given in the design specification, but these bridges are still in good operation. SUMMARY

[0004] In order to solve at least one of the above technical problems, the present disclosure provides a data processing device, a bridge stiffness evaluation system, a data processing method, a bridge stiffness evaluation method, a storage medium and a computer program product,

[0005] The first aspect of the present disclosure provides a data processing device, comprising: a processor and a memory, the memory stores a computer program, when the computer program is executed by the processor, the processor executes the following processes: determining the position-displacement mapping relationship between a plurality of positions of the stiffening beam of the suspender bridge and the lateral displacement under the action of lateral wind load, the plurality of positions are distributed along the length direction of the stiffening beam; determining the position-stress mapping relationship between the plurality of positions and the stress through the position-displacement mapping relationship and the displacement-stress mapping relationship; determining the maximum stress position point in the plurality of positions according to the position-stress mapping relationship, the stress value at the maximum stress position point is the maximum; and determining the lateral deflection ratio limit value of the stiffening beam through the operation relationship between the maximum stress position point and the corresponding maximum stress value, the operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement, and the stress limit value of the stiffening beam, the lateral displacement at the maximum displacement position point is the maximum.

[0006] According to some embodiments of the present disclosure, determining a position-displacement mapping relationship between a plurality of positions of a stiffening girder of a suspension bridge and lateral displacements under a transverse wind load comprises: determining a maximum horizontal component force of a plurality of horizontal component forces of a main cable of the suspension bridge at the plurality of positions of the stiffening girder through hangers under the transverse wind load; and determining the position-displacement mapping relationship between the plurality of positions of the stiffening girder and the lateral displacements based on the maximum horizontal component force.

[0007] According to some embodiments of the present disclosure, the maximum horizontal component force is a horizontal component force of the main cable of the suspension bridge at a midspan position of the stiffening girder.

[0008] According to some embodiments of the present disclosure, the maximum horizontal component force is:

[0009] wherein, is a transverse force of the transverse wind load acting on the midspan position of the stiffening girder, is a transverse force of the transverse wind load acting on the main cable corresponding to the midspan position, is a main span span of the suspension bridge, is a transverse bending stiffness of the stiffening girder, H is a horizontal force of the dead load acting on the main cable, is a distance between the main cable and the stiffening girder at a midspan of the suspension bridge, and p is a dead load intensity of the stiffening girder.

[0010] According to some embodiments of the present disclosure, determining the position-displacement mapping relationship between the plurality of positions of the stiffening girder and the lateral displacements based on the maximum horizontal component force comprises: determining a first mapping relationship between the plurality of positions of the stiffening girder and first displacements of the stiffening girder at the plurality of positions under a transverse wind force, the transverse wind force being a transverse force of the transverse wind load acting on the stiffening girder; determining a second mapping relationship between the plurality of positions of the stiffening girder and second displacements of the stiffening girder at the plurality of positions under the maximum horizontal component force; and superimposing the first mapping relationship and the second mapping relationship to obtain the position-displacement mapping relationship between the plurality of positions of the stiffening girder and the lateral displacements.

[0011] According to some embodiments of the present disclosure, in the process of determining the first mapping relationship and / or the second mapping relationship, the boundary condition comprises: the amount of lateral displacement at the two end positions of the stiffening girder is zero.

[0012] According to some embodiments of the present disclosure, the first mapping relationship satisfies: wherein, is the first displacement, is a transverse force of the transverse wind load acting on the stiffening beam, x is a position point on the stiffening beam, is a main span of the suspension bridge, is a transverse bending stiffness of the stiffening beam.

[0013] According to some embodiments of the present disclosure, the second mapping relationship satisfies:

[0014] wherein, is the second displacement, is the maximum horizontal component, is a main span of the suspension bridge, x is a position point on the stiffening beam, is a transverse bending stiffness of the stiffening beam.

[0015] According to some embodiments of the present disclosure, determining the position-stress mapping relationship between the plurality of positions and stresses through the position-displacement mapping relationship and the displacement-stress mapping relationship comprises: determining a position-moment mapping relationship between the plurality of positions and moments through the position-displacement mapping relationship and the displacement-moment mapping relationship; and determining the position-stress mapping relationship between the plurality of positions and stresses through the position-moment mapping relationship and the moment-stress mapping relationship.

[0016] According to some embodiments of the present disclosure, the position-moment mapping relationship satisfies:

[0017] wherein, is the moment, is a transverse force of the transverse wind load acting on the stiffening beam, x is a position point on the stiffening beam, is a main span of the suspension bridge, is a maximum horizontal component of a plurality of horizontal components formed by the main cable of the suspension bridge at a plurality of positions of the stiffening beam through the hanger under the transverse wind load.

[0018] According to some embodiments of the present disclosure, the position-stress mapping relationship satisfies:

[0019] wherein, is the stress,

[0020] B is a width of the stiffening beam, is a sectional moment of inertia of the stiffening beam.

[0021] According to some embodiments of the present disclosure, determining the maximum stress position point in the plurality of positions according to the position-stress mapping relationship comprises: determining a tangent point of a tangent line in a stress curve corresponding to the position-stress mapping relationship, the tangent line having a slope of 0; and determining a tangent point with maximum stress from the tangent point, to obtain the maximum stress position point in the plurality of positions corresponding to the tangent point with maximum stress.

[0022] According to some embodiments of the present disclosure, the maximum stress position point satisfies: , the maximum stress position point and the corresponding maximum stress value satisfy: , wherein, is a transverse force of the transverse wind load acting on the stiffening beam, is a maximum horizontal component force of a plurality of horizontal component forces formed by the main cable of the suspension bridge through the hanger at a plurality of positions of the stiffening beam under the transverse wind load, is a main span of the suspension bridge, and B is a width of the stiffening beam, is a sectional moment of inertia of the stiffening beam.

[0023] According to some embodiments of the present disclosure, the maximum displacement position point is a mid-span position of the stiffening beam.

[0024] According to some embodiments of the present disclosure, an operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement satisfies: , wherein, is the maximum lateral displacement, is a transverse force of the transverse wind load acting on the stiffening beam, is a maximum horizontal component force of a plurality of horizontal component forces formed by the main cable of the suspension bridge through the hanger at a plurality of positions of the stiffening beam under the transverse wind load, is a main span of the suspension bridge, is a transverse bending stiffness of the stiffening beam.

[0025] According to some embodiments of the present disclosure, a transverse deflection-span ratio limit value T of the stiffening beam satisfies:

[0026] , wherein, is the stress limit value, is a main span of the suspension bridge, B is a width of the stiffening beam, and E is an elastic modulus of the stiffening beam.

[0027] According to some embodiments of the present disclosure, the stress limit value is determined in the following manner: determining a material strength design value of the stiffening beam based on the material of the stiffening beam; determining a difference between the material strength design value and an environmental stress value other than the stress value under the action of the transverse wind load, and obtaining the stress limit value of the stiffening beam under the action of the transverse wind load based on the difference.

[0028] The second aspect of the present disclosure provides a bridge stiffness evaluation system, comprising: the data processing device according to any one of the above embodiments, which is configured to determine a transverse deflection-span ratio limit value of a suspension bridge to be evaluated; and a stiffness evaluation module configured to determine that the transverse stiffness of the suspension bridge to be evaluated meets the requirements when the transverse deflection-span ratio of the suspension bridge to be evaluated is less than or equal to the transverse deflection-span ratio limit value.

[0029] The third aspect of the present disclosure provides a data processing method, comprising: determining a position-displacement mapping relationship between a plurality of positions of a stiffening beam of a suspension bridge and lateral displacements under the action of a transverse wind load, the plurality of positions being distributed along the length direction of the stiffening beam; determining a position-stress mapping relationship between the plurality of positions and stresses through the position-displacement mapping relationship and a displacement-stress mapping relationship; determining a maximum stress position point in the plurality of positions according to the position-stress mapping relationship, the stress value at the maximum stress position point being the maximum; and determining a transverse deflection-span ratio limit value of the stiffening beam through an operation relationship between the maximum stress position point and a corresponding maximum stress value, an operation relationship between a maximum displacement position point and a corresponding maximum lateral displacement, and a stress limit value of the stiffening beam, the lateral displacement amount at the maximum displacement position point being the maximum.

[0030] The fourth aspect of the present disclosure provides a bridge stiffness evaluation method, comprising: obtaining a transverse deflection-span ratio limit value of a suspension bridge to be evaluated through the data processing method according to any one of the above embodiments; and determining that the transverse stiffness of the suspension bridge to be evaluated meets the requirements when the transverse deflection-span ratio of the suspension bridge to be evaluated is less than or equal to the transverse deflection-span ratio limit value.

[0031] The fifth aspect of the present disclosure provides a readable storage medium, wherein a computer program is stored in the readable storage medium, and the computer program is configured to be executed by a processor to implement the method according to any one of the above embodiments.

[0032] The sixth aspect of the present disclosure provides a computer program product, comprising a computer program, wherein the computer program is configured to be executed by a processor to implement at least the method according to any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure.

[0034] Figure 1 A structural schematic diagram of a single-span suspension bridge is shown.

[0035] Figure 2 A structural block diagram of a data processing apparatus of some embodiments of the present disclosure is shown.

[0036] Figure 3 A flow chart diagram of determining a transverse deflection-to-span ratio limit value of a suspension bridge using a data processing apparatus of some embodiments of the present disclosure is shown.

[0037] Figure 4 An elevation schematic diagram of a single-span suspension bridge is shown.

[0038] Figure 5 A plan view schematic diagram of a single-span suspension bridge under a transverse wind load is shown.

[0039] Figure 6 A cross-sectional schematic diagram of a single-span suspension bridge under a transverse wind load is shown.

[0040] Figure 7 A force diagram of a stiffened beam under a transverse wind load is shown.

[0041] Figure 8 A stress curve diagram of a stiffened beam under a transverse wind load is shown.

[0042] Figure 9 A comparison diagram of analytical results and finite element results of a displacement of a stiffened beam is shown.

[0043] Figure 10 A comparison diagram of analytical results and finite element results of a stress of a stiffened beam is shown.

[0044] Figure 11 A schematic diagram of a data processing apparatus of some embodiments of the present disclosure employing a hardware implementation of the processing system is shown.

[0045] Figure 12 A load distribution schematic diagram on a stiffened beam under a transverse wind load is shown.

[0046] Figure 13 A schematic diagram of a bridge stiffness evaluation system of some embodiments of the present disclosure employing a hardware implementation of the processing system is shown.

[0047] Figure 14 A flow schematic diagram of a data processing method of some embodiments of the present disclosure is shown.

[0048] Figure 15 A flowchart of a bridge rigidity evaluation method of some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0049] The present disclosure will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are merely exemplary and are not limiting to the present disclosure. In addition, it should also be pointed out that only parts related to the present disclosure are shown in the drawings for the convenience of description.

[0050] It should be noted that the embodiments and features in the embodiments in the present disclosure can be combined with each other without conflict. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0051] Unless otherwise specified, the exemplary embodiments / instances shown will be understood to provide exemplary features of various details that can implement the technical concepts of the present disclosure in practice. Therefore, unless otherwise specified, the features of various embodiments / instances can be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of the present disclosure.

[0052] The terms used herein are for the purpose of describing specific embodiments and are not limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprise" and / or "include" and their variations are used in this specification, it is meant that there are the stated features, integers, steps, operations, components, components, and / or groups, but it does not exclude the presence or addition of one or more other features, integers, steps, operations, components, components, and / or groups. It should also be noted that, as used herein, the terms "substantially," "approximately," and other similar terms are used as approximate terms and not as degree terms, so they are used to explain the inherent deviations of measured values, calculated values and / or provided values that will be recognized by those of ordinary skill in the art.

[0053] Figure 1 A structural schematic diagram of a single-span suspension bridge is shown. See Figure 1, S is the stiffening girder (main span in single-span suspension bridge), R is the hanger (also known as the suspension cable), and K is the suspension cable (also known as the main cable). For single-span suspension bridges, domestic and foreign bridge design specifications make corresponding provisions for bridge stiffness indicators and limits, but since highway bridges with passing vehicles have relatively low requirements for driving safety and comfort, there are few provisions for lateral stiffness, and only the Highway Suspension Bridge Design Specification (hereinafter referred to as the Specification) stipulates that the maximum lateral displacement of the stiffening girder under the action of crosswind should not be greater than 1 / 150 of the span. The field has not yet given a more accurate indicator and limit for the lateral stiffness of highway suspension bridges (such as long-span suspension bridges), and some of the completed highway suspension bridges exceed the limits of the Specification, such as X Bridge, whose lateral deflection ratio is 1 / 74, which is much larger than the 1 / 150 stipulated in the Specification, but it is still in good operation.

[0054] The starting point for formulating the stiffness standard for long-span suspension bridges is to ensure the safety and comfort of driving on the bridge, so the most direct analysis means to judge whether the lateral stiffness of a bridge meets the requirements is to evaluate the driving safety and comfort of the bridge. According to the calculation and analysis, for long-span highway suspension bridges, the lateral deflection ratio is not controlled by driving comfort and safety during the operation stage, so it is not applicable to judge the lateral stiffness of the structure by the driving safety and comfort indicators during the operation stage.

[0055] Figure 2 A structural block diagram of a data processing apparatus of some embodiments of the present disclosure is shown. The data processing apparatus 1000 can include a data processing apparatus 1000, which includes a processor 1200 and a memory 1300. In the present disclosure, the data processing apparatus 1000 can be different types of electronic devices, for example, the terminal can be a mobile phone, a tablet computer, a notebook computer, or a desktop computer, etc.

[0056] The maximum lateral deflection of the main girder occurs under the action of the lateral wind load (W2 wind action level) of the long-span suspension bridge, and the maximum value can occur at the midspan position, at which time the bridge is in a non-operating state with traffic closed. The stress of the stiffening girder is related to the deformation of the stiffening girder, and the stress of the stiffening girder increases with the increase of the deformation of the stiffening girder, so the lateral stiffness limit of the stiffening girder can be determined by the stress level of the stiffening girder. For example, the deformation curve of the stiffening girder of the suspension bridge under the action of the lateral wind load (hereinafter referred to as the lateral wind load) can be obtained, the relationship between the stress and the deformation curve of the stiffening girder is obtained, and then the lateral deflection ratio limit of the stiffening girder is derived according to the stress limit of the stiffening girder.

[0057] Figure 3 A flowchart of using a data processing apparatus to determine the lateral deflection ratio limit of a suspension bridge is shown. Figure 3The detailed description is for a clearer understanding of the technical solutions of the present disclosure, and should not be considered as a limitation of the protection scope of the present disclosure. In the implementation process of the technical ideas of the present disclosure, one or more steps can be omitted, or other alternative ways can be adopted.

[0058] Reference Figure 3 The C Bridge with a span of 2180m and a single-span steel truss girder suspension bridge is taken as an example to illustrate how to determine the lateral stiffness limit value of the C Bridge. In order to obtain the lateral stiffness limit value, the stress limit value of the stiffening girder of the C Bridge under the action of W2 wind needs to be determined first The stress limit value can be obtained by the following formula (1).

[0059] (1)

[0060] Formula (1) is a formula for constraining the load of the bridge. Wherein, is the material strength design value of the stiffening girder. The strength design value is the strength standard value of steel or connection divided by the corresponding resistance partial coefficient, and the value of the material is different. The stiffening girder can be steel material or concrete material. Taking Q420 type steel material as an example, the material strength design value of the stiffening girder is 320MPa. is the stress value of the stiffening girder under the action of dead load (self weight of the bridge). is the stress value generated by the stiffening girder under the action of temperature. is the stress value of the stiffening girder under the action of lateral wind load, , , and can be called as environmental stress values. The environmental stress value of the bridge needs to meet formula (1) to be considered to meet the requirements. In order to determine the limit value of the stress value under the action of lateral wind load , the values of and can be set as a possible larger value, and then the value of is calculated. At this time, the value of is the limit value of the stress allowed under the action of wind load, that is, the stress limit value .

[0061] Specifically, and values can be obtained by statistics and set. For example, according to the actual stress state of the suspension bridge, the stress values of the stiffening girder under the action of dead load and temperature load of the single-span suspension bridge with different main spans and different stiffening girder types are counted to obtain multiple stress values under the action of dead load and multiple stress values The statistical results show that the maximum value of each is less than 10 MPa, and the maximum value of each is less than 40 MPa, the value of may be set to 10 MPa, and the value of may be set to 40 MPa, thereby most limiting the stress limit under the action of wind load, so that when the transverse deflection ratio limit is determined and used to judge whether the transverse stiffness of the stiffened beam meets the requirements, if the judgment result is that it meets the requirements, the accuracy of the judgment result can be ensured. The values of , and are substituted into the above formula (1), and , that is, the maximum allowable stress of the stiffened beam under the action of transverse wind load is 170 MPa.

[0062] In order to obtain the transverse stiffness limit, it is also necessary to determine the relationship between the stress of the stiffened beam under the action of transverse wind load and the transverse deflection ratio. Figure 4 The elevation schematic diagram of a single-span suspension bridge is shown. Referring to Figure 4 , the transverse wind load will cause the single-span suspension bridge to occur transverse deformation, and the deformation direction is the transverse bridge direction, which is perpendicular to the bridge axis in the horizontal direction. is the main span of the suspension bridge (main span length), and for the single-span suspension bridge, is equivalent to the length of the stiffened beam. is the distance between the suspension cable K and the stiffened beam S at the midspan of the suspension bridge.

[0063] Figure 5 The top view schematic diagram of the single-span suspension bridge under the action of transverse wind load is shown, Figure 6 the cross-sectional schematic diagram of the single-span suspension bridge under the action of transverse wind load is shown, and the position relationship between the suspension cable K and the stiffened beam S under the action of transverse wind load is shown through Figure 5 and Figure 6 . Referring to Figure 5 and Figure 6 , under the action of transverse wind W, the suspension cable K and the stiffened beam S both occur displacement and deformation to a certain extent. The displacement of the suspension cable K is less than that of the stiffened beam S, and the suspension cable K will produce a drag in the opposite direction of the transverse wind to hinder the deformation of the stiffened beam S. x is the coordinate of a certain position point on the stiffened beam S in the bridge axis direction, and the bridge axis direction is the bridge axis direction. u is the displacement amount of the suspension cable K at the x point, and v is the displacement amount of the stiffened beam S at the x point. F is the horizontal component of the corresponding suspender R on the stiffened beam S at the x point, that is, the horizontal component force.

[0064] Based on​Figures 4-6 the maximum horizontal component force F of the plurality of horizontal component forces F formed by the suspender K through the hanger R at the plurality of positions of the stiffening beam S under the action of the transverse wind load The plurality of positions of the stiffening beam S refer to a plurality of different x-coordinate positions on the stiffening beam S. The distribution of the horizontal lateral load of the stiffening beam S transferred by the suspender K is assumed to be a isosceles triangle distribution through approximate calculation analysis, that is, the horizontal component force F is the smallest at the two end positions of the stiffening beam S, the closer to the center position, the greater the horizontal component force F, and the horizontal component force F at the center position (midspan) of the stiffening beam S is the maximum horizontal component force The maximum horizontal component force can be represented by the following formula (2).

[0065] (2)

[0066] In formula (2), is the transverse force of the transverse wind load acting on the midspan position of the stiffening beam S, is the transverse force of the transverse wind load acting on the suspender K corresponding to the midspan position. When the bridge structure size, wind speed of the transverse wind and other parameters of the C bridge are determined, and the values of which can be determined. is the transverse bending stiffness of the stiffening beam S, E is the elastic modulus of the stiffening beam S, is the sectional moment of inertia of the stiffening beam. H is the horizontal force of the constant load acting on the suspender K, wherein the constant load includes the load formed by the suspender K, the self-weight of the stiffening beam (main beam), bridge deck pavement and guardrail, etc., and the change of the horizontal force of the suspender K caused by the wind load is ignored. P is the constant load intensity of the stiffening beam S.

[0067] After obtaining the self-wind load transverse force of the stiffening beam S and the peak value of the wind load horizontal component force of the suspender K transferred to the stiffening beam S , the first position-displacement mapping relationship (referred to as the first mapping relationship) between the different x positions of the stiffening beam S under the action of the transverse wind load and the first displacement formed at the above different x positions under the action of the transverse wind force is determined, and the second position-displacement mapping relationship (referred to as the second mapping relationship) between the different x positions of the stiffening beam S under the action of the maximum horizontal component force and the second displacement formed at the above different x positions under the action of the maximum horizontal component force is determined.

[0068] In the process of determining the first mapping relationship and the second mapping relationship, the boundary conditions include: when x = 0, and when .​ is the first displacement. The first mapping relationship satisfies the following formula (3).

[0069] (3)

[0070] The second mapping relationship satisfies the following formula (4).

[0071] (4)

[0072] wherein, is the second displacement. Formula (3) is a deflection equation of the wind load, which describes the lateral displacement (the displacement in the transverse direction of the bridge) at different x positions caused by the force exerted on the different x positions of the stiffened beam S by the wind load. Formula (4) is a deflection equation of the cable tension, which describes the lateral displacement at different x positions caused by the tension on the different x positions of the stiffened beam S by the suspender R.

[0073] Figure 7 A force diagram of the stiffened beam under the action of the transverse wind load is shown. Referring to Figure 7 , the arrows represent the direction of the force, and the force on the stiffened beam S can be decomposed into the superposition of the horizontal component F and the transverse force of the wind load , wherein the distribution of the horizontal component F is assumed to be the above-mentioned isosceles triangle distribution. At the midspan position, the force on the stiffened beam S is the superposition of the maximum horizontal component and the transverse force of the wind load . Based on the superposition principle, the first mapping relationship and the second mapping relationship are superimposed, that is, the first displacement and the second displacement at each of the different x positions are superimposed, to obtain a position-displacement mapping relationship, which represents the lateral displacement at different x positions of the stiffened beam S. The lateral displacement Figure 5 can describe the curve of the stiffened beam S in

[0074] The position-displacement mapping relationship satisfies the following formula (5). Formula (5) is a lateral displacement curve equation of the stiffened beam, which describes the lateral displacement at different x positions of the stiffened beam S under the action of the wind load.

[0075] (5)

[0076] The position-moment mapping relationship, that is, the moment at different x positions of the stiffened beam S, can be obtained through the position-displacement mapping relationship and the displacement-moment mapping relationship. The position-moment mapping relationship satisfies the following formula (6) under the action of the transverse wind load. Formula (6) is a moment curve equation of the stiffened beam, which describes the moment at different x positions of the stiffened beam S under the action of the wind load.

[0077] (6)

[0078] The position-stress mapping relationship, i.e. the stress value at different x positions of the stiffened beam S, can be obtained through the position-moment mapping relationship and the moment-stress mapping relationship . The stress value satisfies the following formula (7). The formula (7) is a stress curve equation of the stiffened beam, which describes the stress at different x positions of the stiffened beam S under the action of wind load.

[0079] (7)

[0080] Wherein, B is the width of the stiffened beam S.

[0081] After obtaining the position-stress mapping relationship, the position of the stiffened beam with the maximum stress is determined. The position with the maximum stress is the tangent point with a tangent slope of 0, so the tangent point with a tangent slope of 0 can be determined from the stress curve formed by the stress values at multiple positions of the stiffened beam. The specific way can be to obtain the position with the maximum stress based on the first derivative of the stress curve of formula (7). The stress curve of formula (7) is symmetrical with respect to the vertical direction (vertical direction), and when the formula (7) is derived, the first derivative calculation can be performed only on the stress curve of one half of the span, for example, the stress curve of one half of the span with a span range of is derived, and the derivation result is represented by the following formula (8).

[0082] (8)

[0083] Let and solve formula (8) to obtain two tangent points, i.e. two x values. , . Figure 8 The stress curve of the stiffened beam under the action of transverse wind load is shown. Referring to Figure 8 , the stress curve is different from the displacement curve in Figure 5 , the x1 and x2 in Figure 8 respectively correspond to the two x values obtained by solving above, the tangent slopes at the positions of x1 and x2 are both zero, and x1 and x2 are both likely to be candidate position points corresponding to the maximum stress value.

[0084] Since the number of obtained tangent points is more than one, the stress values at the positions of x1 and x2 can be determined, and the maximum stress value is determined therefrom, and then the maximum stress value The corresponding lateral deflection ratio limit value is determined, and the numerical value of the lateral deflection ratio limit value is taken as the lateral stiffness limit value of the C bridge. The lateral stiffness limit value can be used to judge whether the lateral stiffness of the C bridge is qualified. If the numerical value of the lateral deflection ratio of the C bridge obtained by modeling the C bridge and performing finite element analysis does not exceed the lateral stiffness limit value, it indicates that the lateral stiffness of the C bridge is qualified, otherwise it indicates that the lateral stiffness of the C bridge is not qualified.

[0085] In determining the stress values corresponding to x1 and x2, x1 and x2 are substituted into formula (7) respectively to obtain the position point and the corresponding stress value between them is the operation relationship: , and the position point and the corresponding stress value between them is the operation relationship: . Through calculation, , therefore the maximum stress value , and the maximum stress position point is . The operation relationship between is called the position-maximum stress operation relationship.

[0086] In determining the lateral stiffness limit value, the operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement also needs to be obtained. This operation relationship is determined after obtaining the lateral displacement curve . In the case where the distribution of horizontal component force F is assumed to be isosceles triangle distribution, the lateral displacement at the mid-span position of the stiffening beam S is the maximum lateral displacement. Substitute into formula (5) to obtain the operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement (that is, ): After moving the term, the following formula (9) is obtained. In formula (9), the operation relationship between x and is called the position-maximum displacement operation relationship.

[0087] (9)

[0088] To ensure the force safety of the bridge structure, the following needs to be met: , that is, the maximum stress value needs to be less than or equal to the stress limit value. Combined with the operation relationship of formula (9) and the operation relationship between and , the following formula (10) is obtained.

[0089] (10)

[0090] The formula (10) is arranged to obtain the formula (11), and the formula (11) shows an expression of the transverse stiffness limit value T.

[0091] (11)

[0092] wherein, is the maximum transverse deformation of the stiffened beam, is the transverse deflection-span ratio, . The transverse stiffness limit value T can be calculated by substituting each variable into the formula (11).

[0093] The transverse stiffness limit value T can be used to determine whether the transverse stiffness of the bridge is qualified. For example, when determining whether the transverse stiffness of the C Bridge is qualified, a spatial finite element model of the C Bridge is established, and the model is analyzed by the finite element method, so as to obtain the transverse deflection-span ratio of the C Bridge. And the transverse stiffness limit value T of the C Bridge is calculated by the parameters of the C Bridge and the wind load and other parameters. If the transverse deflection-span ratio of the C Bridge is less than or equal to the transverse stiffness limit value T, it means that the transverse stiffness of the C Bridge meets the requirements, otherwise it means that the transverse stiffness of the C Bridge does not meet the requirements.

[0094] The bridge design parameters of the actual C Bridge are used to calculate the transverse stiffness and determine whether the bridge stiffness meets the requirements. Table 1 shows the design parameter values of the bridge and wind load of the C Bridge.

[0095] Table 1 shows the design parameter values of the bridge and wind load of the C Bridge.

[0096]

[0097] The stress limit value can be obtained by the formula (1). The value of β is 4.41 by the design parameters in Table 1. The stress limit value , β, the elastic modulus E of the stiffened beam, the width B of the stiffened beam, the length of the main span of the C Bridge and the correction coefficient q=5 / 6 are substituted into the formula (11): . The correction coefficient q is used to correct the error of the transverse stiffness limit value T. The transverse displacement of the stiffened beam of the C Bridge under the action of the hundred-year cross wind is 11.47m by the finite element analysis, and the transverse deflection-span ratio is 11.47 / 2180≈1 / 190. Since 1 / 190<1 / 125, the transverse stiffness of the C Bridge meets the structural safety requirements.

[0098] Regarding the acquisition of the correction coefficient q, in the process of determining T, the stiffening beam deflection curve is the basis for obtaining the maximum stress of the stiffening beam, therefore, the accuracy of the stiffening beam deflection curve equation corresponding to formula (5) is related to the accuracy of the subsequent transverse stiffness limit value T. In order to verify the accuracy and precision of the mapping relationship and the operation relationship, after the establishment of the spatial finite element analysis model of C Bridge, the analytical results and the finite element analysis results can be compared, wherein the analytical results are the results calculated by the above formulas (1) to (10).

[0099] Figure 9 A comparison chart of the analytical results and the finite element results of the stiffening beam displacement is shown. Referring to Figure 9 For the stiffening beam displacement, the analytical results and the finite element results are relatively small, and the curve shape and the maximum value are relatively similar, wherein the maximum displacement of the analytical results is 11.6 m, which is 1.8% larger than the finite element results.

[0100] Figure 10 A comparison chart of the analytical results and the finite element results of the stiffening beam stress is shown. Referring to Figure 10 For the stiffening beam stress, the analytical results and the finite element results have certain errors, but the change trend is basically the same, and the curves both present M shape, and the maximum stress appears near 1 / 4 span. The maximum stress of the analytical results is 95 MPa, and the maximum stress of the finite element results is 113 MPa, which is about 19% larger than the analytical results. Taking the finite element results as the accurate results, the numerical error between the analytical results and the finite element results can be accepted, that is, it can be considered that the accuracy of the analytical results is acceptable, and can be used for the evaluation of the transverse stiffness limit value of the single-span suspension bridge. According to the calculation results, it can be known that the analytical formula can more accurately reflect the deformation and stress of the stiffening beam under the action of the transverse wind load.

[0101] Since the maximum difference between the analytical results and the finite element results of the stiffening beam stress is 19%, therefore, in the calculation of the transverse stiffness limit value T, the correction coefficient is introduced, and the stress value of the analytical results is multiplied by the coefficient of 1.2, so that the stress value of the analytical results is not less than the finite element calculation results.

[0102] Figure 11 A schematic diagram of a data processing apparatus employing a hardware implementation of the processing system of some embodiments of the present disclosure is shown. Referring to Figure 11The data processing apparatus 1000 provided by the present disclosure comprises a processor 1200 and a memory 1300. The processor 1200 can be a central processing unit (CPU). The processor 1200 can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or combinations thereof.

[0103] The memory 1300 can be used as a non-transitory computer-readable storage medium for storing non-transitory software programs, non-transitory computer-executable programs and modules, such as program instructions of the computer program in the embodiments of the present disclosure. The processor 1200 executes various functions and data processing of the data processing apparatus by running the non-transitory software programs, instructions and modules stored in the memory 1300, thereby realizing the data processing method.

[0104] The memory 1300 can include a program storage area and a data storage area. The program storage area can store an operating system and at least one application required by a function. The data storage area can store data created by the processor 1200, such as structural parameters of a bridge, wind load parameters, finite element model parameters, and stiffness evaluation results. In addition, the memory 1300 can include a high-speed random access memory and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory 1300 can optionally include a memory remotely arranged with respect to the processor 1200, and these remote memories can be connected to the processor 1200 through a network. Examples of the network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0105] The memory 1300 stores a computer program. When the computer program is executed by the processor 1200, the processor 1200 can be caused to perform the following steps S110, S120, S130 and S140 to realize the data processing method.

[0106] S110, determining a position-displacement mapping relationship between a plurality of positions of a stiffening girder of a suspension bridge and lateral displacements under the action of a transverse wind load. The plurality of positions are distributed along the length direction of the stiffening girder. Step S110 can be realized by a displacement relationship acquisition module 1002.

[0107] S120, determining a position-stress mapping relationship between the plurality of positions and stresses according to the position-displacement mapping relationship and the displacement-stress mapping relationship. Step S120 can be implemented by the stress relationship obtaining module 1004.

[0108] S130, determining a maximum stress position point in the plurality of positions according to the position-stress mapping relationship. The stress value at the maximum stress position point is the maximum. Step S130 can be implemented by the stress position determining module 1006.

[0109] S140, determining a transverse deflection-span ratio limit value of the stiffening beam according to an operation relationship between the maximum stress position point and the corresponding maximum stress value, an operation relationship between a maximum displacement position point and a corresponding maximum lateral displacement, and a stress limit value of the stiffening beam. The lateral displacement at the maximum displacement position point is the maximum. Step S140 can be implemented by the limit value determining module 1008.

[0110] According to the data processing device provided by the embodiments of the present disclosure, the deformation curve of the stiffening beam of the suspension bridge under the action of the 100-year transverse wind is determined first, the relationship between the stress of the stiffening beam and the deformation curve is obtained, and then the transverse deflection-span ratio limit value is obtained according to the stress limit value of the stiffening beam. The transverse deflection-span ratio limit value can accurately reflect the real stiffness limit of the bridge and can be used for evaluating the transverse stiffness limit of the bridge.

[0111] The device 1000 can include corresponding modules that perform each or several steps of the above data processing method. Therefore, each or several steps in the above flowchart can be performed by the corresponding modules, and the device can include one or more of these modules. The modules can be one or more hardware modules specially configured to perform the corresponding steps, or implemented by a processor configured to perform the corresponding steps, or stored in a computer readable medium for implementation by a processor, or implemented by some combination.

[0112] The hardware structure can be implemented by a bus architecture. The bus architecture can include any number of interconnected buses and bridges, depending on the specific application of the hardware and overall design constraints. The bus 1100 connects various circuits including one or more processors 1200, memories 1300, and / or hardware modules together. The bus 1100 can also connect various other circuits 1400 such as peripheral devices, voltage regulators, power management circuits, external antennas, etc.

[0113] The bus 1100 can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one connection line is shown in the figure, but it does not mean that there is only one bus or only one type of bus.

[0114] The lateral wind load is a 100-year lateral wind load, i.e., a W2 wind load, and the lateral bearing capacity of the bridge in a non-operating state is determined by the 100-year lateral wind load. See Figure 4 The plurality of positions of the stiffening beam are distributed along the bridge longitudinal direction of the stiffening beam, i.e., sequentially arranged along the direction of the stiffening beam The plurality of positions of the stiffening beam are distributed along the bridge longitudinal direction of the stiffening beam, i.e., sequentially arranged along the direction of the stiffening beam

[0115] The position-displacement mapping relationship can be characterized as a displacement curve, with the x-axis being the position point on the stiffening beam and the y-axis being the lateral displacement amount of the position point. The position-displacement mapping relationship can also be characterized as a displacement expression, i.e., formula (5).

[0116] In step S110, the manner of determining the position-displacement mapping relationship between the plurality of positions of the stiffening beam and the lateral displacement under the action of the lateral wind load can include the following steps: determining the maximum horizontal component force of the plurality of horizontal component forces formed by the main cable of the suspension bridge at the plurality of positions of the stiffening beam through the suspender under the action of the lateral wind load; and determining the position-displacement mapping relationship between the plurality of positions of the stiffening beam and the lateral displacement based on the maximum horizontal component force. The maximum horizontal component force can be the horizontal component force formed by the main cable of the suspension bridge at the mid-span position of the stiffening beam. The maximum horizontal component force can be represented by the above formula (2).

[0117] Figure 12 A load distribution diagram on the stiffening beam under the action of the lateral wind load is shown. See Figure 12, S is a stiffening beam, K is a suspension cable, and R is a suspender connected to the stiffening beam S and the suspension cable K. The static force calculation of a long-span suspension bridge under lateral wind load mainly determines the load distribution between the suspension cable and the stiffening beam and the control of the lateral stiffness of the stiffening beam. Under the action of wind load, the horizontal force distribution of the suspender R transmitted to the stiffening beam S is generally in the shape of a parabola D1. In approximate calculation and analysis, according to the distribution assumption of an isosceles triangle, the distribution of the horizontal wind load of the suspender R transmitted to the stiffening beam S can be assumed to be in the shape of an isosceles triangle D2, that is, the full-span uniform load is equivalent to the form of an isosceles triangle. Thus, the numerical value of the maximum horizontal component force Fx is obtained.

[0118] In step S110, the manner of determining the position-displacement mapping relationship between the plurality of positions of the stiffening beam and the lateral displacement on the basis of the maximum horizontal component force can include the following steps: determining a first mapping relationship between the plurality of positions of the stiffening beam and a first displacement formed at the plurality of positions of the stiffening beam under the action of a transverse wind force, wherein the transverse wind force is a transverse force of the transverse wind load acting on the stiffening beam; determining a second mapping relationship between the plurality of positions of the stiffening beam and a second displacement formed at the plurality of positions of the stiffening beam under the action of the maximum horizontal component force; and superimposing the first mapping relationship and the second mapping relationship to obtain the position-displacement mapping relationship between the plurality of positions of the stiffening beam and the lateral displacement. Step S110 can obtain the lateral displacement of the stiffening beam by superimposing the transverse force of the self wind load on the stiffening beam and the transverse force of the suspension cable transmitted to the stiffening beam.

[0119] In the process of determining the first mapping relationship, the boundary condition can include that the amount of lateral displacement at the two end positions of the stiffening beam is zero. In the process of determining the second mapping relationship, the boundary condition can also include that the amount of lateral displacement at the two end positions of the stiffening beam is zero.

[0120] The first mapping relationship and the second mapping relationship can both be characterized as displacement curves, with the x-axis being a position point on the stiffening beam and the y-axis being the amount of transverse displacement of the position point. The first mapping relationship and the second mapping relationship can also be characterized as displacement expressions. The first mapping relationship can be represented by the above formula (3). The second mapping relationship can be represented by the above formula (4). Referring to Figure 7 The flexural curve equation of the wind load transverse force acting on the stiffening beam in Figure 7 can be obtained first, and then the first mapping relationship can be obtained according to the boundary condition. It can be understood that, since the displacement and stress of the two half spans of the stiffening beam are considered to be symmetrical, formula (4) is represented in the form of a piecewise function. The position-displacement mapping relationship obtained after superimposition can be represented by the above formula (5).

[0121] ​In step S120, the manner of determining the position-stress mapping relationship between the plurality of positions and the stress through the position-displacement mapping relationship and the displacement-stress mapping relationship can include the following steps: determining a position-moment mapping relationship between the plurality of positions and the moment through the position-displacement mapping relationship and the displacement-moment mapping relationship; and determining the position-stress mapping relationship between the plurality of positions and the stress through the position-moment mapping relationship and the moment-stress mapping relationship.

[0122] The position-moment mapping relationship can be represented as a moment curve, in which the x-axis represents the position point on the stiffened beam, and the y-axis represents the moment of the position point. The position-moment mapping relationship can also be represented as a moment expression, and the position-moment mapping relationship can be represented by the above formula (6).

[0123] The position-stress mapping relationship can be represented as a stress curve, in which the x-axis represents the position point on the stiffened beam, and the y-axis represents the stress of the position point. The position-stress mapping relationship can also be represented as a stress expression, and the position-stress mapping relationship can be represented by the above formula (7).

[0124] In step S130, the manner of determining the maximum stress position point in the plurality of positions according to the position-stress mapping relationship can include the following steps: determining a tangent point of a tangent line of the stress curve corresponding to the position-stress mapping relationship, the slope of the tangent line being 0; and determining the tangent point with the maximum stress from the tangent point to obtain the maximum stress position point in the plurality of positions corresponding to the tangent point with the maximum stress.

[0125] The tangent point can be obtained by taking the derivative of formula (7) and setting the expression obtained by the derivative to be equal to 0, thereby obtaining one or more x positions. Since the stress of the stiffened beam is assumed to be symmetrically distributed in two half spans, the derivative can be taken only for one of the two half spans, for example, the derivative of the front half span in formula (7) is taken to obtain the above formula (8). Setting the right side of formula (8) to be equal to 0, two x values are obtained, which are x1 and x2. Substituting the numerical value of the parameter into the expression of x1 and x2, x1 is determined as the maximum stress position point of the stiffened beam corresponding to the tangent point with the maximum stress. The maximum stress position point can be represented as: The operation relationship between the maximum stress position point and the corresponding maximum stress value The operation relationship between the maximum stress position point and the corresponding maximum stress value

[0126] It can be understood that if x2 is the maximum stress position point of the stiffened beam corresponding to the tangent point with the maximum stress, the maximum stress position point The maximum stress position point can be represented as: .

[0127] In step S140, the maximum displacement position point can be a position in the span of the stiffened beam. The maximum displacement position point and the corresponding maximum lateral displacement The operation relationship between x2 and x3 can be expressed as: The transverse deflection ratio limit T of the stiffened beam can be expressed as: It can be understood that if x2 is the maximum stress position point corresponding to the stress maximum tangent point, the transverse deflection ratio limit T of the stiffened beam can be expressed as:

[0128] .

[0129] wherein the stress limit value The obtaining method of the stress limit value can include the following steps: determining the material strength design value of the stiffened beam based on the material of the stiffened beam; and determining the difference between the material strength design value and the environmental stress value other than the stress value under the action of the transverse wind load, and obtaining the stress limit value of the stiffened beam under the action of the transverse wind load based on the difference.

[0130] Figure 13 A schematic diagram of a bridge stiffness evaluation system is shown, which is a hardware implementation of a processing system according to some embodiments of the present disclosure. Referring to Figure 13 The bridge stiffness evaluation system 2000 provided by the present disclosure includes a data processing device 1000 and a stiffness evaluation module 2002. The data processing device 1000 includes a processor 1200 and a memory 1300. The memory 1300 stores a computer program. When the computer program is executed by the processor 1200, the processor 1200 can execute steps S110, S120, S130 and S140 to obtain the transverse deflection ratio limit of the suspension bridge to be evaluated.

[0131] S110, determining the position-displacement mapping relationship between the plurality of positions of the stiffened beam of the suspension bridge and the lateral displacement under the action of the transverse wind load. The plurality of positions are distributed along the length direction of the stiffened beam. Step S110 can be implemented by a displacement relationship acquisition module 1002.

[0132] S120, determining the position-stress mapping relationship between the plurality of positions and the stress through the position-displacement mapping relationship and the displacement-stress mapping relationship. Step S120 can be implemented by a stress relationship acquisition module 1004.

[0133] S130, determining the maximum stress position point in the plurality of positions according to the position-stress mapping relationship. The stress value at the maximum stress position point is the maximum. Step S130 can be implemented by a stress position determination module 1006.

[0134] S140, determining the lateral deflection ratio limit of the stiffening girder through the operation relationship between the maximum stress position point and the corresponding maximum stress value, the operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement, and the stress limit of the stiffening girder. The lateral displacement at the maximum displacement position point is the largest. Step S140 can be implemented by the limit value determination module 1008.

[0135] The rigidity evaluation module 2002 is configured to determine that the lateral rigidity of the suspension bridge to be evaluated meets the requirements when the lateral deflection ratio of the suspension bridge to be evaluated is less than or equal to the lateral deflection ratio limit and the lateral deflection ratio limit.

[0136] It should be noted that the details of the bridge rigidity evaluation system of the present embodiment that are not disclosed can refer to the details disclosed in the data processing device 1000 of the above-mentioned embodiments of the present disclosure, which will not be described here.

[0137] Figure 14 The flowchart of the data processing method of some embodiments of the present disclosure is shown. Referring to Figure 14 The present disclosure provides a data processing method M100, which can include the following steps S110, S120, S130 and S140.

[0138] S110, determining the position-displacement mapping relationship between the plurality of positions of the stiffening girder of the suspension bridge and the lateral displacement under the action of the lateral wind load. The plurality of positions are distributed along the length direction of the stiffening girder.

[0139] S120, determining the position-stress mapping relationship between the plurality of positions and the stress through the position-displacement mapping relationship and the displacement-stress mapping relationship.

[0140] S130, determining the maximum stress position point in the plurality of positions according to the position-stress mapping relationship. The stress value at the maximum stress position point is the largest.

[0141] S140, determining the lateral deflection ratio limit of the stiffening girder through the operation relationship between the maximum stress position point and the corresponding maximum stress value, the operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement, and the stress limit of the stiffening girder. The lateral displacement at the maximum displacement position point is the largest.

[0142] It should be noted that the details of the data processing method M100 of the present embodiment that are not disclosed can refer to the details disclosed in the data processing device 1000 of the above-mentioned embodiments of the present disclosure, which will not be described here.

[0143] Figure 15 The flowchart of the bridge rigidity evaluation method of some embodiments of the present disclosure is shown. Referring to Figure 15The present disclosure provides a bridge stiffness evaluation method M200, which can include the following steps S210 and S220.

[0144] S210, obtaining a lateral deflection-span ratio limit value of the suspension bridge to be evaluated by a data processing method.

[0145] S220, when the lateral deflection-span ratio of the suspension bridge to be evaluated is less than or equal to the lateral deflection-span ratio limit value, determining that the lateral stiffness of the suspension bridge to be evaluated meets the requirements.

[0146] The data processing method can include the following steps S110, S120, S130 and S140.

[0147] S110, determining a position-displacement mapping relationship between a plurality of positions of the stiffening girder of the suspension bridge and lateral displacements under the action of lateral wind load. The plurality of positions are distributed along the length direction of the stiffening girder.

[0148] S120, determining a position-stress mapping relationship between the plurality of positions and stresses by the position-displacement mapping relationship and the displacement-stress mapping relationship.

[0149] S130, determining a maximum stress position point in the plurality of positions according to the position-stress mapping relationship. The stress value at the maximum stress position point is the maximum.

[0150] S140, determining the lateral deflection-span ratio limit value of the stiffening girder by an operation relationship between the maximum stress position point and the corresponding maximum stress value, an operation relationship between the maximum displacement position point and the corresponding maximum lateral displacement, and a stress limit value of the stiffening girder. The lateral displacement at the maximum displacement position point is the maximum.

[0151] It should be noted that the details not disclosed in the bridge stiffness evaluation method M200 of the present embodiment can refer to the details disclosed in the data processing device 1000 of the above-mentioned embodiments of the present disclosure, which will not be described here.

[0152] The present disclosure also provides a readable storage medium, which stores a computer program. When the computer program is executed by a processor, it is used to implement the method of any one of the above-mentioned embodiments.

[0153] For the purposes of this specification, a "computer-readable storage medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable storage medium can be a computer- readable storage medium that can be any medium (non-transitory or transitory) that can be read by a computer. More specific examples (a non-exhaustive list) of the computer-readable storage medium include the following: an electrical connection having one or more wires (electronic devices), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, and a portable compact disc read-only memory (CD-ROM).

[0154] The present disclosure also provides a computer program product. The methods of the present disclosure can be implemented totally or partially through software, hardware, firmware, or any combination thereof. When implemented through software, the methods can be implemented totally or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed by the computer, the processes or functions of the present disclosure are totally or partially executed. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, a core network device, an OAM, or other programmable apparatus.

[0155] The computer programs or instructions can be stored in or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer programs or instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center through a wired or wireless manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The available media can be a magnetic medium such as a floppy disk, a hard disk, a magnetic tape; an optical medium such as a digital video disc; or a semiconductor medium such as a solid-state disk. The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0156] Those skilled in the art will understand that the embodiments of the present disclosure can be provided as methods, systems, or computer program products. Therefore, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0157] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks in the flowchart and / or block diagram. Figure 1 one or more flows and / or blocks in the flowchart and / or block diagram.

[0158] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks in the flowchart and / or block diagram. Figure 1 one or more flows and / or blocks in the flowchart and / or block diagram. Figure 1 The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks in the flowchart and / or block diagram.

[0159] In the description of the present disclosure, the description referring to the terms "one embodiment / implementation", "some embodiments / implementations", "a specific example", or "some examples" etc. means that the particular feature, structure, material or characteristic being described is included in at least one embodiment / implementation or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not intended to be construed as specific to any particular embodiment / implementation or example. Moreover, it is appreciated that the same feature, structure, material or characteristic can be combined with one or more other features, structures, materials or characteristics in any suitable manner. Furthermore, the description of the disclosure is not intended to be construed as a limitation on the scope of the disclosure. The description is intended to be construed as an illustrative presentation of the disclosure. It is appreciated that those skilled in the art can devise other arrangements, structures, materials and characteristics that are within the scope of the present disclosure.

Claims

1. A data processing apparatus, characterized by, Comprising: a processor and a memory, the memory storing a computer program, when the computer program is executed by the processor, the processor executes the following processes: determining a position-displacement mapping relationship between a plurality of positions of a stiffening girder of a suspension bridge and lateral displacements under a transverse wind load, the plurality of positions being distributed along a length direction of the stiffening girder; determining a position-stress mapping relationship between the plurality of positions and stresses through the position-displacement mapping relationship and a displacement-stress mapping relationship; determining a maximum stress position point in the plurality of positions according to the position-stress mapping relationship, a stress value at the maximum stress position point being maximum; and determining a transverse deflection-span ratio limit value of the stiffening girder through an operation relationship between the maximum stress position point and a corresponding maximum stress value, an operation relationship between a maximum displacement position point and a corresponding maximum lateral displacement, and a stress limit value of the stiffening girder, a lateral displacement amount at the maximum displacement position point being maximum; the determining a position-displacement mapping relationship between a plurality of positions of a stiffening girder of a suspension bridge and lateral displacements under a transverse wind load, comprising: determining a maximum horizontal component force in a plurality of horizontal component forces formed by a main cable of the suspension bridge at a plurality of positions of the stiffening girder through a suspender under the transverse wind load; and determining a position-displacement mapping relationship between the plurality of positions of the stiffening girder and lateral displacements based on the maximum horizontal component force; the determining a position-displacement mapping relationship between the plurality of positions of the stiffening girder and lateral displacements based on the maximum horizontal component force, comprising: determining a first mapping relationship between the plurality of positions of the stiffening girder and first displacements formed at the plurality of positions by the stiffening girder under a transverse wind force, the transverse wind force being a transverse force of the transverse wind load acting on the stiffening girder; determining a second mapping relationship between the plurality of positions of the stiffening girder and second displacements formed at the plurality of positions by the stiffening girder under the maximum horizontal component force; and superimposing the first mapping relationship and the second mapping relationship to obtain the position-displacement mapping relationship between the plurality of positions of the stiffening girder and lateral displacements.

2. The data processing apparatus according to claim 1, characterized in that, the determining a position-stress mapping relationship between the plurality of positions and stresses through the position-displacement mapping relationship and a displacement-stress mapping relationship, comprising: determining a position-moment mapping relationship between the plurality of positions and bending moments through the position-displacement mapping relationship and a displacement-moment mapping relationship; and determining the position-stress mapping relationship between the plurality of positions and stresses through the position-moment mapping relationship and a moment-stress mapping relationship.

3. The data processing apparatus according to claim 1, characterized by, The maximum stress position point satisfies: , the maximum stress position point and the corresponding maximum stress value between them satisfy the operation relationship: wherein, is a lateral force of the lateral wind load acting on the stiffening girder, is a maximum horizontal component force of a corresponding plurality of horizontal component forces of the main cable of the suspension bridge at a plurality of locations of the stiffening girder by the hanger under the lateral wind load, is a main span length of the suspension bridge, and B is a width of the stiffening girder, is a sectional moment of inertia of the stiffening girder.

4. A bridge rigidity evaluation system characterized by comprising: Comprising: the data processing apparatus of any one of claims 1 to 3, the data processing apparatus being used to determine a transverse deflection-span ratio limit value of a suspension bridge to be evaluated; and a stiffness evaluation module, configured to determine that a transverse stiffness of the suspension bridge to be evaluated meets a requirement when a transverse deflection-span ratio of the suspension bridge to be evaluated is less than or equal to the transverse deflection-span ratio limit value.

5. A data processing method, characterized by, Comprising: determining a position-displacement mapping relationship between a plurality of positions of a stiffening girder of a suspension bridge and lateral displacements under a transverse wind load, the plurality of positions being distributed along a length direction of the stiffening girder; determining a position-stress mapping relationship between the plurality of positions and stresses according to the position-displacement mapping relationship and the displacement-stress mapping relationship; determining a maximum stress position point in the plurality of positions according to the position-stress mapping relationship, a stress value at the maximum stress position point being maximum; and determining a lateral deflection-span ratio limit value of the stiffening beam according to an operation relationship between the maximum stress position point and a corresponding maximum stress value, an operation relationship between a maximum displacement position point and a corresponding maximum lateral displacement, and a stress limit value of the stiffening beam, a lateral displacement amount at the maximum displacement position point being maximum; the determining a position-displacement mapping relationship between a plurality of positions of a stiffening beam of a suspension bridge and lateral displacements under a transverse wind load, comprising: determining a maximum horizontal component force in a plurality of horizontal component forces formed by a main cable of the suspension bridge at a plurality of positions of the stiffening beam through a suspender under the transverse wind load; and determining the position-displacement mapping relationship between the plurality of positions of the stiffening beam and the lateral displacements based on the maximum horizontal component force; the determining the position-displacement mapping relationship between the plurality of positions of the stiffening beam and the lateral displacements based on the maximum horizontal component force, comprising: determining a first mapping relationship between the plurality of positions of the stiffening beam and first displacements formed at the plurality of positions by the stiffening beam under a transverse wind force, the transverse wind force being a transverse force of the transverse wind load acting on the stiffening beam; determining a second mapping relationship between the plurality of positions of the stiffening beam and second displacements formed at the plurality of positions by the stiffening beam under the maximum horizontal component force; and superimposing the first mapping relationship and the second mapping relationship to obtain the position-displacement mapping relationship between the plurality of positions of the stiffening beam and the lateral displacements.

6. A method of evaluating the rigidity of a bridge, characterized by comprising: obtaining a lateral deflection-span ratio limit value of a suspension bridge to be evaluated by the data processing method of claim 5; and when a lateral deflection-span ratio of the suspension bridge to be evaluated is less than or equal to the lateral deflection-span ratio limit value, determining that a lateral stiffness of the suspension bridge to be evaluated meets a requirement.

7. A readable storage medium characterized by, The readable storage medium has a computer program stored therein, and the computer program is executed by a processor to implement the method of claim 5 or 6.

8. A computer program product, characterised in that, The computer program product comprises a computer program, and the computer program is executed by a processor to at least implement the method of claim 5 or 6.

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