Soft cross-prefabrication computing method, system, electronic device, storage medium

Abstract

The present invention provides a soft span prefabrication calculation method, system, electronic device, and storage medium. The method is based on a load calculation method, and the method includes: obtaining measurement parameters, and calculating the offset of the upward support, the offset of the downward support, the offset of the upper positioning cable of the upward support, the offset of the upper positioning cable of the downward support, the upward lateral sag, the downward lateral sag, and the span based on the measurement parameters; obtaining the type of suspension point, and refining the suspension point with the contact point in the suspension point as the boundary; calculating the vertical suspension load of the refined suspension point, and calculating the horizontal distance between the refined suspension points; calculating the lowest point of the horizontal bearing, the height difference of the refined suspension point, and the segment length of the horizontal bearing cable. By refining the suspension point, the segment length of the horizontal bearing that better meets the actual construction needs is calculated.

Description

Technical Field

[0001] The present invention relates to the technical field of electrified railway contact network, and in particular to a soft span prefabrication calculation method, system, electronic equipment and storage medium. Background Art

[0002] For the prefabrication calculation of the structural dimensions of the soft cross-span of the electrified railway overhead contact network, the traditional algorithm calculation content includes the determination of the position of the shortest suspension string, the length of the horizontal load-bearing cable, the length of the upper and lower fixed ropes, and the length of each straight suspension string.

[0003] The soft cross-span structure is complex, involving the actual measurement of parameters such as lateral span, track spacing, pillar height difference and inclination, and lateral limit. Therefore, the prefabrication of soft cross-span has always been a major difficulty in the construction calculation of the contact network.

[0004] In the course of historical development, the methods of prefabricating soft spans have gone through the graphic method, actual measurement method, parabola calculation method, and load calculation method. Among them, the parabola calculation method is to regard the concentrated load of the contact suspension as a uniformly distributed load, regard the cross-bearing cable as a catenary, and use the parabola formula to calculate its length. The graphic method is to draw the known data on the coordinate paper according to a certain proportion, and then use a curve ruler to draw the suspension line of the cross-bearing cable. The actual measurement method requires measuring the size of the existing soft span, and prefabricating and installing the soft span according to the original size; the load calculation method uses the actual load as the calculation condition, and uses the principle of static balance to convert the load calculation into the structural size calculation. This algorithm has also been widely used in on-site construction.

[0005] The calculation accuracy of the parabola calculation method and the graphical method is low; the actual measurement method is only applicable to overhauled railways, and is not applicable to newly built and renovated lines. The load calculation method is now more commonly used. It uses the actual load as the calculation condition and uses the principle of static balance to convert the load calculation into the structural dimension calculation. This algorithm is also widely used in on-site construction. However, the disadvantage of this algorithm is that the current calculation cannot fully meet the requirements of on-site construction, because on-site construction requires the calculation of the distance inside the node, that is, a more detailed solution is required. At present, the railway site mainly uses special calculation personnel to calculate and perform soft span prefabrication. Moreover, this method relies heavily on a small number of technicians who are proficient in calculations, and the adjustment of the soft span relies on the experience of the technicians, which increases the human error rate and takes a long time to calculate. Summary of the invention

[0006] The purpose of the present invention is to provide a soft cross-prefabrication calculation method, system, electronic device, and storage medium. Some embodiments can be used to solve the defects of the prior art that it relies on the experience of technicians, increases the human error rate, and takes a long time to calculate. The calculation software compiled using scientific methods can not only ensure accuracy, but also greatly improve calculation efficiency and have a better popularity rate. This algorithm is upgraded on the basis of the load calculation method, which ensures accuracy and meets on-site construction requirements. In addition, the calculation results of this calculation method also include the installation position of each part and the length of each segment of the cross-bearing, upper positioning cable, and lower positioning cable, wherein the length of each segment includes the segment inside the node structure, such as the segment length inside the cross-bearing Z7 type node, and the solution variables are more refined.

[0007] The present invention provides a method for calculating soft span prefabrication, which is based on a load calculation method and includes:

[0008] Obtaining measurement parameters, and calculating the upward pillar offset, downward pillar offset, upward pillar upper positioning cable offset, downward pillar upper positioning cable offset, upward lateral sag, downward lateral sag, and span based on the measurement parameters;

[0009] Get the type of suspension point, and refine the suspension point based on the contact point in the suspension point;

[0010] Calculate the vertical suspension load of the suspension points after refinement, and calculate the horizontal distance between the suspension points after refinement;

[0011] Calculate the lowest point of the transverse support, the height difference of the suspension point after refinement, and the segment length of the transverse support cable.

[0012] According to a method for calculating soft span prefabrication provided by the present invention, the horizontal distance between suspension points after calculation and refinement includes:

[0013] Based on the node type of the suspension point, the pull-out value of the locator, and the track superelevation, determine the geometric relationship between the contact point in the suspension point, the locator, and the track center below the suspension point;

[0014] The coordinates of the refined suspension points are calculated based on the geometric relationship, and the horizontal distances between the refined suspension points are calculated.

[0015] According to a soft span prefabrication calculation method provided by the present invention, the calculation of the lowest point of the horizontal bearing, the height difference of the detailed suspension point, and the segment length of the horizontal bearing force cable then includes:

[0016] Determine the first coordinate of the last non-electrified track or platform between the up-going support and the first suspension point away from the side edge of the up-going support, and the second coordinate of the first non-electrified track or platform between the last suspension point and the down-going support away from the side edge of the down-going support;

[0017] Based on the first coordinate, the second coordinate, the node installation structure, and the node parts installation principle, the coordinates of the contact point in the non-suspension node are calculated;

[0018] Based on the coordinates of the refined suspension points and the coordinates of the contact points in the non-suspension nodes, the segment lengths of the installation positions of all parts of the cross support, upper locating cable and lower locating cable are calculated.

[0019] According to a soft span precast calculation method provided by the present invention, the vertical suspension load of the suspension point after calculation refinement includes:

[0020] Calculate the overall vertical load of the suspension point in units of nodes;

[0021] The vertical suspension load of the refined suspension point is obtained according to the weight ratio of the parts inside the node.

[0022] According to a method for calculating soft span prefabrication provided by the present invention, the calculation of the lowest point of the horizontal bearing includes:

[0023] The lowest point can be predicted by the pillar reaction method;

[0024] Taking the current lowest point as the boundary, determine whether the boundary force is positive and less than the vertical load at the current lowest point by the decomposition force method;

[0025] If yes, confirm that the current lowest point is the actual lowest point. Otherwise, adjust the current lowest point and re-enter the previous step.

[0026] According to a soft span prefabrication calculation method provided by the present invention, the adjusting the current lowest point includes:

[0027] If the dividing force is a negative value, the current lowest point moves to the left; if the dividing force is greater than the vertical load of the current lowest point, the previous lowest point moves to the right.

[0028] The present invention also provides a soft-span prefabricated computing system, the system comprising:

[0029] A parameter acquisition module, wherein the parameter acquisition module acquires measurement parameters, and calculates the offset of the upward pillar, the offset of the downward pillar, the offset of the upper positioning cable of the upward pillar, the offset of the upper positioning cable of the downward pillar, the upward lateral sag, the downward lateral sag, and the span based on the measurement parameters;

[0030] A refinement module, wherein the refinement module obtains the type of the suspension point and refines the suspension point based on the contact point in the suspension point as a boundary;

[0031] A calculation module, wherein the calculation module calculates the vertical suspension load of the refined suspension points and the horizontal distance between the refined suspension points;

[0032] A result module calculates the lowest point of the transverse support, the height difference of the suspension point after refinement, and the segment length of the transverse support cable.

[0033] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the soft straddling prefabrication calculation method as described in any one of the above items are implemented.

[0034] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the soft straddle prefabrication calculation method as described in any one of the above items are implemented.

[0035] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the steps of the soft straddle prefabrication calculation method as described in any one of the above items are implemented.

[0036] The soft cross-span prefabrication calculation method, system, electronic device, and storage medium provided by the present invention calculate the cross-bearing segment length that better meets actual construction requirements by refining the suspension points. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the flow chart of the soft span prefabrication calculation method provided by the present invention;

[0039] Figure 2 A schematic diagram of calculation of the structural transfer method provided by the present invention applied in node Z5;

[0040] Figure 3 A schematic diagram of the x_SXFD coordinates provided by the present invention;

[0041] Figure 4 A schematic diagram of the x_XXFD coordinates provided by the present invention;

[0042] Figure 5 A structural diagram of a single-transverse-bearing single-insulator provided by the present invention;

[0043] Figure 6 The 2TFS node structure diagram provided by the present invention;

[0044] Figure 7 A schematic diagram of the lowest point solution process provided by the present invention;

[0045] Figure 8 A schematic diagram of the structure of the soft span prefabricated computing system provided by the present invention;

[0046] Fig. 9 A schematic diagram of the physical structure of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The soft span prefabrication calculation method provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0049] Figure 1 The schematic diagram of the soft span prefabrication calculation method provided by the present invention is as follows: Figure 1 As shown, the present invention provides a soft span prefabrication calculation method, which is based on a load calculation method and includes:

[0050] Step 100, obtaining measurement parameters, and calculating the upward pillar offset, the downward pillar offset, the upward pillar upper positioning cable offset, the downward pillar upper positioning cable offset, the upward lateral sag, the downward lateral sag, and the span based on the measurement parameters;

[0051] Optionally, according to the on-site measurement parameters, the offset of the up and down pillars d1 = H1*w1, d2 = H2*w2, wherein H1 is the height of the up side pillar, H2 is the height of the down side pillar, w1 is the total slope of the inner edge of the up pillar relative to the plumb line, and w2 is the total slope of the inner edge of the down pillar relative to the plumb line; the offset of the upper positioning cable of the up and down pillars d11 = H_s1*w1, d22 = H_s2*w2, wherein H_s1 is the installation height of the upper positioning cable on the up side, H_s2 is the installation height of the upper positioning cable on the down side, w1 is the total slope of the inner edge of the up pillar relative to the plumb line, and w2 is the total slope of the inner edge of the down pillar. The total slope of the inner edge of the column relative to the plumb line; with the lowest point of the horizontal support as the boundary, the up and down lateral sags f1 and f2, the up lateral sag f1 = 1000*H1-H_s1*1000+S1-C_min-Dx_1, the down lateral sag f2 = 1000*H2-H_s2*1000+S2-C_min-Dx_2; S1 is the height difference between the up column foundation surface and the main line track surface, C_min is the shortest suspension string length, Dx_1 is the distance from the suspension point to the top of the up column, S2 is the height difference between the down column foundation surface and the main line track surface; Dx_2 is the distance from the suspension point to the top of the down column; span L: a[i] is the horizontal distance from the track center corresponding to the suspension point i to the track center corresponding to the suspension point i+1; the i of the upward pillar is 0, and there are n suspension points in total (in units of whole nodes, for example, Z5 is only counted as one suspension point;

[0052] Step 200, obtaining the type of the suspension point, and refining the suspension point using the contact point in the suspension point as a boundary;

[0053] Taking the contact point as the unit, for example, Z5 is 1 suspension point, but there are two contact points inside, that is, Z5 is refined into 3 suspension points;

[0054] Step 300, calculating the vertical suspension load of the refined suspension points and calculating the horizontal distance between the refined suspension points;

[0055] It should be noted that there is no order requirement between the vertical suspension load of the suspension point after calculation and the horizontal distance between the suspension points after calculation and refinement;

[0056] Step 400, calculating the lowest point of the horizontal bearing, the height difference of the suspension point after refinement, and the segment length of the horizontal bearing cable;

[0057] Optionally, after calculating the height difference of the detailed suspension point, the height difference calculation result is verified, and after the verification is correct, the segment length of the transverse load-bearing cable is calculated.

[0058] This embodiment refines the suspension points to calculate the length of the horizontal support segment that better meets the actual construction requirements.

[0059] Further, in another embodiment, a soft span prefabrication calculation method provided in this embodiment calculates the horizontal distance between the refined suspension points, including:

[0060] Based on the node type of the suspension point, the pull-out value of the locator, and the track superelevation, determine the geometric relationship between the contact point in the suspension point, the locator, and the track center below the suspension point;

[0061] The coordinates of the refined suspension points are calculated based on the geometric relationship, and the horizontal distances between the refined suspension points are calculated.

[0062] Optionally, the length b of the cross-bearing segment can be obtained by the Pythagorean theorem through the horizontal distance a of the suspension point and the height difference m of the suspension point. In the existing decomposition method, a is replaced by the track spacing, which has a large error. Therefore, this algorithm invents a structural transfer method to calculate the horizontal distance of the contact points of the cross-bearing cables, which is closer to the actual needs of the project.

[0063] Figure 2 The schematic diagram of the calculation of the structural transfer method provided by the present invention applied in the node Z5 is as follows: Figure 2 As shown, taking the solution of node type Z5 in the case of a_LCZL[i]>=0&&hL[i]<=0 as an example, a_LCZL represents the pull-out value of the left locator, and hL represents the superelevation of the corresponding track of the left locator. When there is only one locator, a_LCZL is used. First, it is assumed that the intersection of the vertical line of the suspension point of the upper support cross support and the upper positioning rope is the origin, then the horizontal coordinate of the contact point between the cross support and the upper support can be determined as x_HN[0]=-x_s (x_s is the horizontal distance from the inner edge of the upper support of the cross support to the installation position), plus the horizontal distance of each adjacent electrified track center is known, with the position of node 8 as the boundary, by using the structural transfer method, the coordinates of the contact point can be determined, and the horizontal coordinates of the cross support contact point, the upper positioning rope, and the lower positioning rope are solved:

[0064] Point 1: x_H[1]=x_GD+sin(lamda)*Hj-a_LCZL*cos(lamda)-CDWQL

[0065] Point 2: x_H[2]=x_GD+sin(lamda)*Hj-a_LCZL*cos(lamda)

[0066] Point 3: x_S[3]=x_GD+sin(lamda)*Hj-a_LCZL*cos(lamda)-CDWQL

[0067] Point 4: x_S[4]=x_GD+sin(lamda)*Hj-a_LCZL*cos(lamda)

[0068] Point 5: x_X[5]=x_GD+sin(lamda)*Hj-a_LCZL*cos(lamda)-CDWQL

[0069] Where x_GD represents the horizontal coordinate of the center of the track below the node, lamda represents the angle between the track and the horizontal plane, Hj represents the height of the contact line, a_LCZL represents the pull-out value of the positioner, CDWQL represents the length of the positioner (the inclination angle of the positioner is very small and can be ignored here), x_H[i] represents the coordinates of the contact point of the i-th hangable node on the cross support from the upstream side to the downstream side, x_S[i] represents the coordinates of the contact point of the i-th hangable node on the upper fixed rope from the upstream side to the downstream side, and x_X[i] represents the coordinates of the contact point of the i-th hangable node on the lower fixed rope from the upstream side to the downstream side.

[0070] The coordinates of the contact points of all suspension nodes (non-pillar type nodes and intermediate nodes, such as 1, 2, 1S, 2S, 8a, 9a, 13a, etc.) on the cross-beam have been determined by the structural transfer method. Next, the coordinate difference method is used to solve the horizontal distance of the decomposed suspension points. Taking Z5 as an example, the horizontal distance between the two internal contact points of Z5 on the cross-beam is x_H[2]-x_H[1].

[0071] Because a set of soft crossbars involves up to 16 types of suspension nodes, and the problems of the upstream and downstream sides need to be considered, and the appearance of each node type is random. It is necessary to find the total number of contact points on the corresponding crossbars based on the node types that appear randomly in a set of soft crossbars, and cycle through the types of suspension nodes involved from the upstream to the downstream in turn, and cumulatively solve the coordinates of the contact points from the upstream side to the downstream side and the horizontal distance of the contact points.

[0072] This embodiment takes into account the influence of the pull-out value and track superelevation in the actual soft span structure, and calculates the horizontal distance between the suspension points according to the position of the actual contact point of the transverse load-bearing cable, thereby improving the accuracy of the soft span prefabrication calculation.

[0073] Further, in another embodiment, this embodiment provides a soft span prefabrication calculation method, which calculates the lowest point of the horizontal bearing, the height difference of the detailed suspension point, and the segment length of the horizontal bearing cable, and then includes:

[0074] Determine the first coordinate of the last non-electrified track or platform between the up-going support and the first suspension point away from the side edge of the up-going support, and the second coordinate of the first non-electrified track or platform between the last suspension point and the down-going support away from the side edge of the down-going support;

[0075] Based on the first coordinate, the second coordinate, the node installation structure, and the node parts installation principle, the coordinates of the contact point in the non-suspension node are calculated;

[0076] Based on the coordinates of the refined suspension points and the coordinates of the contact points in the non-suspension nodes, the segment lengths of the installation positions of all parts of the cross support, upper locating cable and lower locating cable are calculated.

[0077] Due to the actual needs on site, it is necessary to obtain the length of the installation position of all parts of the cross bearing, upper positioning cable, and lower positioning cable, but the existing prefabrication algorithm of soft span does not solve this problem. This algorithm is based on the coordinates of the pillar contact point, the center coordinates of the non-electrified track, and the platform edge coordinates, and the node installation structure and node parts installation principles. It solves the three types of situations of the upward pillar node, the downward pillar node (1S, 2S, 1TS, etc.), and the intermediate non-suspension node.

[0078] Figure 3 The x_SXFD coordinate diagram provided by the present invention is: Figure 4 The x_XXFD coordinate schematic diagram provided by the present invention is as follows: Figure 3 and 4 As shown, before classifying and solving the non-suspension nodes, it is necessary to determine the edge coordinates x_SXFD of the last non-electrified track or platform between the upward pillar and the first suspension point away from the upward pillar, and the edge coordinates x_XXFD of the first non-electrified track or platform between the last suspension point and the downward pillar away from the downward pillar. The determination method is to determine x_SXFD and x_XXFD based on the center coordinates of the adjacent electrified track, the distance from the center of the non-electrified track / platform to the center of the adjacent electrified track, and the width of the non-electrified track / platform.

[0079] Furthermore, the coordinates of the contact points of non-suspension node types are solved. Different node types have different geometric structures, and the same node type can be divided into several small types. The algorithm is explained using the non-suspension node type 2TFS as an example. Its solution classification considers whether it is a single cross-bearing or a double cross-bearing, whether the up-line support and the last one after the first suspension point are non-electrified tracks or platforms. If it is a platform, it is also necessary to consider whether the insulator is installed on the outside or inside of the platform. Figure 5 The single cross-bearing single insulator structure diagram provided by the present invention is as follows: Figure 5 As shown, DCAT8a is the distance from the center of the porcelain bottle to the return bend, DCAW8a is the distance from the center of the other porcelain bottle to the return bend, DT8a is the distance from the tip of the porcelain bottle to the return bend, and DW8a is the distance from the flat end of the porcelain bottle to the return bend.

[0080] Figure 6 The 2TFS node structure diagram provided by the present invention is as follows: Figure 6 As shown, the calculation formula for point 1 coordinates (x_H[1], y_H[1]) is as follows:

[0081] x_H[1]=(x_EGD[n]+GDK / 2+x_XXFD) / 2-DCAT8a-SJDJL2TFS

[0082] y_H[1]=H2+S2 / 1000-Dx_2 / 1000-H_s2-y1

[0083] y1 is derived based on the triangle similarity principle and is the vertical distance from point 1 to the suspension point of the down-going support; x_EGD[n] is the center coordinate of the last electrified track from the up-going support to the down-going support; GDK is the track width; x_XXFD is the horizontal coordinate from the last suspension point to the first non-electrified track / platform of the down-going support away from the edge of the down-going support; DCAT8a is the distance from the center of the porcelain bottle to the reversal bend (the single cross-bearing single insulator diagram has been marked); SJDJL2TFS (the 2TFS node structure diagram has been marked); H2 is the height of the down-going support; S2 is the height difference between the down-going support foundation surface and the main line track surface; Dx_2 is the distance from the suspension point to the top of the down-going column; H_s2 is the installation height of the upper positioning cable on the down-going support side;

[0084] The calculation formula for point 2 coordinates (x_H[2], y_H[2]) is as follows:

[0085] x_H[2]=(x_EGD[n]+GDK / 2+x_XXFD) / 2-DCAT8a

[0086] y_H[2]=H2+S2 / 1000-Dx_2 / 1000-H_s2-y2

[0087] y2 is derived from the triangle similarity principle and is the vertical distance from point 2 to the suspension point of the down-going support. x_EGD[n] is the center coordinate of the last electrified track from the up-going support to the down-going support. GDK is the track width. x_XXFD is the horizontal coordinate from the last suspension point to the first non-electrified track / platform of the down-going support away from the edge of the down-going support. DCAT8a is the distance from the center of the porcelain bottle to the reversal bend (marked in the single cross-bearing single insulator diagram). H2 is the height of the down-going support. S2 is the height difference from the foundation surface of the down-going support to the mainline track surface. Dx_2 is the distance from the suspension point to the top of the down-going support. H_s2 is the installation height of the upper positioning cable on the down-going support side.

[0088] The calculation formula for point 3 coordinates (x_H[3], y_H[3]) is as follows:

[0089] x_H[3]=(x_EGD[n]+GDK / 2+x_XXFD) / 2-DCAW8a

[0090] y_H[3]=H2+S2 / 1000-Dx_2 / 1000-H_s2-y3

[0091] y3 is derived from the triangle similarity principle and is the vertical distance from point 3 to the suspension point of the down-going support. x_EGD[n] is the center coordinate of the last electrified track from the up-going support to the down-going support. GDK is the track width. x_XXFD is the horizontal coordinate from the last suspension point to the first non-electrified track / platform of the down-going support away from the edge of the down-going support. DCAW8a is the distance from the center of the porcelain bottle to the reversal bend (marked in the single cross-bearing single insulator diagram). H2 is the height of the down-going support. S2 is the height difference from the foundation surface of the down-going support to the main line track surface. Dx_2 is the distance from the suspension point to the top of the down-going column. H_s2 is the installation height of the upper positioning cable on the down-going support side.

[0092] The calculation formula for point 4 coordinates (x_H[4], y_H[4]) is as follows:

[0093] x_H[4]=x_SN[sm+1]-SGDS2TFS+XSZK-STDJL2TFS

[0094] y_H[4]=H2+S2 / 1000-Dx_2 / 1000-H_s2-y4

[0095] y4 is derived from the triangle similarity principle, which is the vertical distance from point 4 to the hanging point of the descending pillar; x_SN[sm+1] is the coordinate of the inner edge of the upper positioning cable on the descending pillar side; SGDS2TFS, STDJL2TFS (2TFS node structure diagram has been marked); XSZK is the width of the upper fixed rope of the descending pillar; H2 is the height of the descending pillar; S2 is the height difference between the foundation surface of the descending pillar and the main line track surface; Dx_2 is the distance from the hanging point to the top of the descending pillar; H_s2 is the installation height of the upper positioning cable on the descending pillar side;

[0096] The calculation formula for the coordinates of point 5 (x_H[5], y_H[5]) is as follows:

[0097]

[0098] y_H[5]=H2+S2 / 1000-Dx_2 / 1000-H_s2-y5

[0099] If it is a double cross bearing, replace DHC2TFS with SHC2TFS, y5 is obtained based on the principle of triangle similarity, which is the distance from the suspension point of point 5 to the downstream pillar; x_HN[hm+1] is the horizontal coordinate of the installation position of the cross bearing on the downstream pillar side; DHC2TFS, SHC2TFS (2TFS node structure diagram has been marked); H2 is the height of the downstream pillar; S2 is the height difference from the foundation surface of the downstream pillar to the main line track surface; Dx_2 is the distance from the suspension point to the top of the downstream column; H_s2 is the installation height of the upper positioning cable on the downstream pillar side;

[0100] According to the horizontal and vertical coordinates of each installation position obtained above, according to the formula The lengths of each segment of the transverse support inside the non-suspension node can be obtained.

[0101] It should be noted that since there are two oblique suspension strings at one contact point, the traditional suspension string length only calculates the vertical distance from the contact point to the upper positioning cable in this case. The processing of this situation is optimized and the length of the two oblique suspension strings is calculated based on the geometric relationship.

[0102] This embodiment discloses the calculation of the segment lengths of the installation positions of all parts of the cross support, upper positioning cable, and lower positioning cable based on the coordinates of all suspension points.

[0103] Further, in another embodiment, this embodiment provides a soft span prefabrication calculation method, which calculates the vertical suspension load of the refined suspension point, including:

[0104] Calculate the overall vertical load of the suspension point in units of nodes;

[0105] The vertical suspension load of the refined suspension point is obtained according to the weight ratio of the parts inside the node.

[0106] Optionally, the overall vertical load is calculated in units of nodes. Furthermore, each suspension point is composed of 6 loads, namely the contact suspension load of a span, the suspension deadweight load, the node load, the weight shared by the non-suspension points in front of the suspension point (on the upward pillar side), the weight shared by the non-suspension points on the rear side of the suspension point (in the downward pillar direction), and the middle anchor load.

[0107] That is, Q[i]=G[i]+P[i]+J[i]+Z_1[i]+Z_2[i]+M[i]. Among them, G[i] refers to the contact suspension load of a span, which is caused by the gravity sharing of the contact wires and load-bearing cables of adjacent spans. The method for calculation is G[i]=N[i]*(q_c+q_j)*(L_1[i]+L_2[i]) / 2*g (N[i] is the number of contact suspensions at the suspension point, q_c and q_j are the weight per unit length of the load-bearing cable and the contact wire respectively, and (L_1[i]+L_2[i]) / 2 refers to the average value of the two adjacent longitudinal spans); P[i] refers to the deadweight load of the horizontal load-bearing cable and the upper and lower fixed ropes. The method for calculation is to multiply the deadweight load per unit length by the average line spacing (that is, take the average value of the line spacing on both sides of the suspension point, pay attention to the area =Divided into single and double cross bearings); node load J[i], i.e. the load of the suspension parts. In this calculation, it only refers to the load of the hangable nodes; Z_1[i] refers to the weight shared by the non-suspension points on the upstream side of the suspension point. The possible node types are the pillar node type and the intermediate non-suspension node type (such as 8a, 8b, 9a, 9b, etc.); Z_2[i] refers to the weight shared by the non-suspension points on the downstream side of the suspension point. The possible node types are the pillar node type and the intermediate non-suspension node type (such as 8a, 8b, 9a, 9b, etc.); M[i] refers to the deadweight load of the middle anchor and the lower anchor support. For the suspension with the center anchor and the lower anchor support, the load is attributed to the corresponding suspension point according to the actual situation.

[0108] The existing technologies all divide the sections based on the overall node, but fail to take into account the double contact point nodes (such as Z5 has two contact points on the cross support). Therefore, it is impossible to calculate the installation position and section length of a set of soft cross-span parts in actual construction. However, the railway construction site requires not the section distance based on the overall node, but the section distance between each installation position. For the purpose of improvement, the vertical load is re-decomposed based on the overall load solution and the weight proportion distribution principle of the parts inside the node.

[0109] This embodiment first divides the entire soft cross-span into multiple suspension points to obtain the vertical load of each suspension point, and then further decomposes the interior of the suspension point according to the cross-bearing contact point, thereby calculating the vertical load of the segment in actual construction.

[0110] Furthermore, in another embodiment, this embodiment provides a soft span prefabrication calculation method, Figure 7 The schematic diagram of the lowest point solution process provided by the present invention is as follows: Figure 7 As shown, the solution of the lowest point in the method includes the following steps:

[0111] The lowest point can be predicted by the pillar reaction method;

[0112] Optionally, first calculate the support reaction force F of the horizontal support cable according to the moment balance principle A 、FB , and then according to the successive trials F A -Q1-Q2-...-Q i-1 >0,F A -Q1-Q2-...-Q i-1 -Q i <=0, i is the lowest point, Q i is the vertical load at the aforementioned suspension point;

[0113] Taking the current lowest point as the boundary, determine whether the boundary force is positive and less than the vertical load at the current lowest point by the decomposition force method;

[0114] If yes, confirm that the current lowest point is the actual lowest point. Otherwise, adjust the current lowest point and re-enter the previous step.

[0115] Optionally, adjusting the current lowest point includes: if the demarcation force is a negative value, the current lowest point moves to the left; if the demarcation force is greater than the vertical load of the current lowest point, the previous lowest point moves to the right.

[0116] In order to ensure the accuracy of solving the lowest point, this embodiment adopts a combination of a pillar reaction force trial method, a decomposition force method, and an iterative alternation method to accurately locate the lowest point.

[0117] The soft span prefabrication calculation system provided by the present invention is described below. The soft span prefabrication calculation system described below and the soft span prefabrication calculation method described above can be referred to each other.

[0118] Figure 8 The schematic diagram of the structure of the soft span prefabricated computing system provided by the present invention is as follows: Figure 8 As shown, the present invention also provides a soft crossover prefabricated computing system, the system comprising:

[0119] A parameter acquisition module, wherein the parameter acquisition module acquires measurement parameters, and calculates the offset of the upward pillar, the offset of the downward pillar, the offset of the upper positioning cable of the upward pillar, the offset of the upper positioning cable of the downward pillar, the upward lateral sag, the downward lateral sag, and the span based on the measurement parameters;

[0120] A refinement module, wherein the refinement module obtains the type of the suspension point and refines the suspension point based on the contact point in the suspension point as a boundary;

[0121] A calculation module, wherein the calculation module calculates the vertical suspension load of the refined suspension points and the horizontal distance between the refined suspension points;

[0122] A result module calculates the lowest point of the transverse support, the height difference of the suspension point after refinement, and the segment length of the transverse support cable.

[0123] This embodiment takes into account the influence of the pull-out value and track superelevation in the actual soft span structure, and calculates the horizontal distance between the suspension points according to the position of the actual contact point of the transverse load-bearing cable, thereby improving the accuracy of the soft span prefabrication calculation.

[0124] Fig. 9 A schematic diagram of the physical structure of an electronic device provided by the present invention, such as Fig. 9 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820 and the memory 830 communicate with each other through the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute the soft crossover prefabrication calculation method, which includes:

[0125] Obtaining measurement parameters, and calculating the upward pillar offset, downward pillar offset, upward pillar upper positioning cable offset, downward pillar upper positioning cable offset, upward lateral sag, downward lateral sag, and span based on the measurement parameters;

[0126] Get the type of suspension point, and refine the suspension point based on the contact point in the suspension point;

[0127] Calculate the vertical suspension load of the suspension points after refinement, and calculate the horizontal distance between the suspension points after refinement;

[0128] Calculate the lowest point of the transverse support, the height difference of the suspension point after refinement, and the segment length of the transverse support cable.

[0129] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0130] On the other hand, the present invention further provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, when the program instructions are executed by a computer, the computer can execute the soft spanning prefabrication calculation method provided by the above methods, the method comprising:

[0131] Obtaining measurement parameters, and calculating the upward pillar offset, downward pillar offset, upward pillar upper positioning cable offset, downward pillar upper positioning cable offset, upward lateral sag, downward lateral sag, and span based on the measurement parameters;

[0132] Get the type of suspension point, and refine the suspension point based on the contact point in the suspension point;

[0133] Calculate the vertical suspension load of the suspension points after refinement, and calculate the horizontal distance between the suspension points after refinement;

[0134] Calculate the lowest point of the transverse support, the height difference of the suspension point after refinement, and the segment length of the transverse support cable.

[0135] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the computer program is implemented to perform the soft spanning prefabrication calculation method provided above, the method comprising:

[0136] Obtaining measurement parameters, and calculating the upward pillar offset, downward pillar offset, upward pillar upper positioning cable offset, downward pillar upper positioning cable offset, upward lateral sag, downward lateral sag, and span based on the measurement parameters;

[0137] Get the type of suspension point, and refine the suspension point based on the contact point in the suspension point;

[0138] Calculate the vertical suspension load of the suspension points after refinement, and calculate the horizontal distance between the suspension points after refinement;

[0139] Calculate the lowest point of the transverse support, the height difference of the suspension point after refinement, and the segment length of the transverse support cable.

[0140] This program product starts from the load calculation method, and uses mechanics, dynamics, finite element method, iteration method, uniform load and moment balance combined with trial and error method to make it applicable to the needs of solving the internal distance of nodes and the distance of double or more suspension strings within nodes; and after the calculation is completed, the automatic drawing function of soft span prefabrication calculation is realized, which can not only achieve the purpose of one-time on-site installation, but also improve the popularity of prefabrication calculation. Soft span prefabrication calculation is no longer dependent on a few technicians who know how to calculate and optimize.

[0141] This program product is applied in electrification transformation projects with good accuracy, saving a lot of manpower and material resources, and significant technical effects. After the correct input of the measured data, the calculation software completes the calculation, is verified and outputs the drawing, and the installation is completed in one go.

[0142] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0143] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soft span precast calculation method, the method is based on a load calculation method, characterized in that: The method comprises: Obtaining measurement parameters, and calculating the upward pillar offset, downward pillar offset, upward pillar upper positioning cable offset, downward pillar upper positioning cable offset, upward lateral sag, downward lateral sag, and span based on the measurement parameters; Get the type of suspension point, and refine the suspension point based on the contact point in the suspension point; Calculate the vertical suspension load of the suspension points after refinement, and calculate the horizontal distance between the suspension points after refinement; Calculate the lowest point of the horizontal bearing, the height difference of the suspension point after refinement, and the segment length of the horizontal bearing cable; The calculation of the lowest point of the horizontal bearing, the height difference of the detailed suspension point, and the segment length of the horizontal bearing cable then includes: Determine the first coordinate of the last non-electrified track or platform between the up-going support and the first suspension point away from the side edge of the up-going support, and the second coordinate of the first non-electrified track or platform between the last suspension point and the down-going support away from the side edge of the down-going support; Based on the first coordinate, the second coordinate, the node installation structure, and the node parts installation principle, the coordinates of the contact point in the non-suspension node are calculated; Based on the coordinates of the refined suspension points and the coordinates of the contact points in the non-suspension nodes, the segment lengths of the installation positions of all parts of the cross support, upper locating cable and lower locating cable are calculated.

2. The soft span prefabrication calculation method according to claim 1 is characterized in that: The calculating of the horizontal distance between the refined suspension points includes: Based on the node type of the suspension point, the pull-out value of the locator, and the track superelevation, determine the geometric relationship between the contact point in the suspension point, the locator, and the track center below the suspension point; The coordinates of the refined suspension points are calculated based on the geometric relationship, and the horizontal distances between the refined suspension points are calculated.

3. The soft span prefabrication calculation method according to claim 1 is characterized in that: The vertical suspension load of the suspension point after the calculation of the refinement includes: Calculate the overall vertical load of the suspension point in units of nodes; The vertical suspension load of the refined suspension point is obtained according to the weight ratio of the parts inside the node.

4. The soft span prefabrication calculation method according to claim 1 is characterized in that: The calculation of the lowest point of the horizontal bearing includes: The lowest point can be predicted by the pillar reaction method; Taking the current lowest point as the boundary, determine whether the boundary force is positive and less than the vertical load at the current lowest point by the decomposition force method; If yes, confirm that the current lowest point is the actual lowest point. Otherwise, adjust the current lowest point and re-enter the previous step.

5. The soft span prefabrication calculation method according to claim 4 is characterized in that: The adjustment of the current lowest point includes: If the dividing force is a negative value, the current lowest point moves to the left; if the dividing force is greater than the vertical load of the current lowest point, the previous lowest point moves to the right.

6. A soft span prefabricated computing system, characterized in that: The system comprises: A parameter acquisition module, wherein the parameter acquisition module acquires measurement parameters, and calculates the offset of the upward pillar, the offset of the downward pillar, the offset of the upper positioning cable of the upward pillar, the offset of the upper positioning cable of the downward pillar, the upward lateral sag, the downward lateral sag, and the span based on the measurement parameters; A refinement module, wherein the refinement module obtains the type of the suspension point and refines the suspension point based on the contact point in the suspension point as a boundary; A calculation module, wherein the calculation module calculates the vertical suspension load of the refined suspension points and the horizontal distance between the refined suspension points; A result module, which calculates the lowest point of the horizontal bearing, the height difference of the suspension point after refinement, and the segment length of the horizontal bearing cable; The calculation of the lowest point of the horizontal bearing, the height difference of the suspension point after refinement, and the segment length of the horizontal bearing cable then includes: Determine the first coordinate of the last non-electrified track or platform between the up-going support and the first suspension point away from the side edge of the up-going support, and the second coordinate of the first non-electrified track or platform between the last suspension point and the down-going support away from the side edge of the down-going support; Based on the first coordinate, the second coordinate, the node installation structure, and the node parts installation principle, the coordinates of the contact point in the non-suspension node are calculated; Based on the coordinates of the refined suspension points and the coordinates of the contact points in the non-suspension nodes, the segment lengths of the installation positions of all parts of the cross support, upper locating cable and lower locating cable are calculated.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the soft spanning prefabrication calculation method according to any one of claims 1 to 5 are implemented.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the soft spanning prefabrication calculation method according to any one of claims 1 to 5 are implemented.

9. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the soft spanning prefabrication calculation method according to any one of claims 1 to 5 are implemented.

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