CN113360969A - High-strength bolt rapid design method for steel truss girder rod piece - Google Patents

High-strength bolt rapid design method for steel truss girder rod piece Download PDF

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CN113360969A
CN113360969A CN202110503154.2A CN202110503154A CN113360969A CN 113360969 A CN113360969 A CN 113360969A CN 202110503154 A CN202110503154 A CN 202110503154A CN 113360969 A CN113360969 A CN 113360969A
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strength bolt
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CN113360969B (en
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苏伟
刘龙
李艳
王雨权
廖立坚
白青波
杨智慧
张兴华
傅安民
吴迪
李恩良
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China Railway Design Corp
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Abstract

The invention discloses a rapid design method of a high-strength bolt for a steel truss girder rod piece, which comprises the following steps: setting high-strength bolt information including specification and pretension force of the high-strength bolt, construction parameters of the high-strength bolt and calculation parameters of the high-strength bolt; calculating the maximum number of single-row bolts of each plate according to the section type of the rod piecen 0And a maximum number of bolts in a single row considering a manhole/handholen 1(ii) a Based on the equal strength design method, the minimum bolt number required by each plate is calculatedn](ii) a According to the actual situation, pressn 0Orn 1Arranging bolts from the edge joint to the total number of boltsnNumber of bolts not less than minimumn](ii) a If the jump hole is not considered, the design result of the high-strength bolt is output, otherwise, the number of bolts exceeding the minimum numbern]After the bolt is corrected, the high-strength bolt is outputAnd designing a result. The method for designing the high-strength bolt of the steel truss girder rod piece is suitable for various complex conditions, the design efficiency is high, and the calculation result can be used for drawing a connection diagram of the high-strength bolt of the steel truss girder rod piece and calculating the characteristics of a net section.

Description

High-strength bolt rapid design method for steel truss girder rod piece
Technical Field
The invention belongs to the field of bridge engineering design, and particularly relates to a rapid design method of a high-strength bolt for a steel truss girder rod piece.
Background
Due to the reasons of poor on-site welding quality, high requirement on installation precision, short construction period and the like, the steel truss girder segment is mainly connected by high-strength bolts during installation.
The design of the high-strength bolt of the steel truss girder rod piece has the following difficulties: firstly, the calculation condition is complex, and the cross section form, the stiffening rib position and the manhole/hand hole position of the steel truss girder rod piece all influence the design result of the high-strength bolt; secondly, the calculation efficiency is low, and because the calculation amount is large, the control factors are many, and the automation degree is low.
Therefore, a strong bolt automatic design method with strong universality and high design efficiency is needed to solve the practical problems in design.
Disclosure of Invention
The invention is provided for solving the problems in the prior art, and aims to provide a method for quickly designing a high-strength bolt for a steel truss girder rod piece.
The technical scheme of the invention is as follows: a high-strength bolt rapid design method for a steel truss girder rod piece comprises the following steps:
A. presetting high-strength bolt information
The high-strength bolt information comprises high-strength bolt specification and pretension, high-strength bolt construction parameters and high-strength bolt calculation parameters;
B. calculating the maximum number of single-row bolts of each plate
Calculating the maximum number n of single-row bolts of each plate according to the section type of the rod piece0And a maximum number of bolts n in a single row considering a manhole/handhole1；
C. Calculating the minimum number of bolts required for each plate
Calculating the minimum number [ n ] of bolts required by each plate based on an equal strength design method;
D. arranging high-strength bolts
According to the actual situation, press n0Or n1Arranging bolts one by one from the edge joint until the total number n of bolts is not less than the minimum number n of bolts]；
E. Outputting high-strength bolt design result
If the jump hole is not considered, the design result of the high-strength bolt is directly output; and if hole jumping is considered, correcting the bolts exceeding the minimum bolt number [ n ], and outputting a high-strength bolt design result.
Further, the high-strength bolt construction parameters in the step A comprise bolt hole diameter, bolt center distance, bolt center-to-plate edge distance, bolt center-to-plate stiffening rib/H-shaped (I-shaped and Chinese character 'wang' -shaped) section web distance, whether the bolt is arranged according to jump holes or not, and whether the bolt is arranged in the extension range of manhole/hand hole width or not.
Further, the shape of the manhole/handhole is circular or a circular end shape consisting of a rectangle and two semicircles.
Furthermore, when the current row of bolts does not have a manhole/handhole, the bolts are also arranged according to the manhole/handhole of the current row of bolts; otherwise, arranging the bolts according to the actual hole opening condition of the row plate where the bolts are located.
Furthermore, the calculation parameters of the high-strength bolt in the step A refer to the parameters for calculating the allowable anti-sliding bearing capacity of the high-strength bolt.
Furthermore, the section type of the rod in the step B comprises any section of a single box, a single chamber and an H-shaped (I-shaped and Chinese character 'Wang' shaped).
Further, the moderately strong design method in step C refers to a design method in which the designed bearing capacity of the joint is not lower than the bearing capacity of the base material member.
Further, in step D, n is expressed0Or n1Arranging bolts row by row from the edge joint means that when the current bolt row is in a manhole/handhole or the bolt is arranged in the extension range of the width of the manhole/handhole is false, the bolt is arranged according to n1Arranging bolts one by one from the splicing seams; when no manhole/handhole exists in the current bolt row, press n0The bolts are arranged one by one from the edge joint.
Further, the modification of the bolts exceeding the minimum number of bolts [ n ] in the step E means to reduce the total number of bolts to a minimum even number larger than the minimum number of bolts [ n ].
Furthermore, the design result of the high-strength bolts in the step E comprises the minimum number [ n ] of bolts of each plate of the steel truss girder rod piece, the total number of the bolts used by each plate, the arrangement scheme of the bolts of each plate and the number of the bolts used in each row.
The invention designs the high-strength bolt of the steel truss girder member rapidly, covers the common section type of the steel truss girder member, is suitable for the conditions of stiffening ribs and holes/hand holes, supports a plurality of arrangement methods such as jump hole arrangement and the like, basically covers most of calculation conditions in the design of the high-strength bolt of the steel truss girder member, and has strong universality.
The invention realizes the automatic design of the high-strength bolt, can greatly improve the design efficiency, generally needs 3-4 h when the traditional means finishes the design of the high-strength bolt of a long-span steel truss girder bridge, and only needs 3-5 min when the invention finishes the design of the same volume, thereby liberating the design productivity.
The design result output by the invention not only can realize the rapid design of the high-strength bolt of the steel truss girder rod piece, but also can complete the rapid calculation of the net section characteristic and the drawing of the connection diagram of the high-strength bolt of the steel truss girder rod piece by means of the design result.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a cross section of an upper chord of a steel truss and a manhole thereof according to an embodiment of the present invention;
FIG. 3 is a diagram of the bolt arrangement of the y1 plate plotted according to the calculation result in the embodiment of the present invention;
FIG. 4 is a diagram of the bolt arrangement of the y2 plate plotted according to the calculation result in the embodiment of the present invention;
fig. 5 is a bolt layout diagram of the z1 plate plotted according to the calculation result in the embodiment of the present invention.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1 to 5, a method for rapidly designing a high-strength bolt for a steel truss girder rod member includes the following steps:
A. presetting high-strength bolt information
The high-strength bolt information comprises high-strength bolt specification and pretension, high-strength bolt construction parameters and high-strength bolt calculation parameters;
B. calculating the maximum number of single-row bolts of each plate
Calculating the maximum number n of single-row bolts of each plate according to the section type of the rod piece0And a maximum number of bolts n in a single row considering a manhole/handhole1；
C. Calculating the minimum number of bolts required for each plate
Calculating the minimum number [ n ] of bolts required by each plate based on an equal strength design method;
D. arranging high-strength bolts
According to the actual situation, press n0Or n1Arranging bolts one by one from the edge joint until the total number n of bolts is not less than the minimum number n of bolts]；
E. Outputting high-strength bolt design result
If the jump hole is not considered, the design result of the high-strength bolt is directly output; and if hole jumping is considered, correcting the bolts exceeding the minimum bolt number [ n ], and outputting a high-strength bolt design result.
And step A, the construction parameters of the high-strength bolt comprise the diameter of the bolt, the center distance of the bolt, the distance from the center of the bolt to the edge of the plate, the distance from the center of the bolt to the stiffening rib/H-shaped (I-shaped or E-shaped) cross section web plate, whether the bolt is arranged according to jump holes or not and whether the bolt is arranged in the extension range of the width of the manhole/hand hole or not.
The shape of the manhole/handhole is round or a round end shape consisting of a rectangle and two semicircles.
When the current row of bolts does not have a manhole/handhole, arranging the bolts according to the manhole/handhole of the current row of bolts; otherwise, arranging the bolts according to the actual hole opening condition of the row plate where the bolts are located.
And step A, calculating parameters of the high-strength bolt refers to parameters for calculating the allowable anti-sliding bearing capacity of the high-strength bolt.
The section types of the rod in the step B comprise any single-box single-chamber section and H-shaped (I-shaped and Chinese character 'Wang' shaped) section.
The medium-strength design method in the step C is a design method that the design bearing capacity of the joint is not lower than the bearing capacity of the base material member.
In step D, press n0Or n1Arranging bolts row by row from the edge joint means that when the current bolt row is in a manhole/handhole or the bolt is arranged in the extension range of the width of the manhole/handhole is false, the bolt is arranged according to n1Arranging bolts one by one from the splicing seams; when no manhole/handhole exists in the current bolt row, press n0The bolts are arranged one by one from the edge joint.
Modifying the bolts exceeding the minimum number of bolts [ n ] in step E means reducing the total number of bolts to the minimum even number larger than the minimum number of bolts [ n ].
And E, designing results of the high-strength bolts comprise the minimum number [ n ] of bolts of each plate of the steel truss girder rod piece, the total number of the bolts adopted by each plate, the arrangement scheme of the bolts of each plate and the number of the bolts adopted by each row.
For the purpose of illustrating the invention, the commonly used calculation parameters are represented by symbols, specifically as follows: the inner clear width/H-shaped (I-shaped and Chinese character 'wang' -shaped) cross section wing plate width of the single-box single-chamber cross section without the stiffening rib plates is b, the clear width set of the stiffening rib plates of the single-box single-chamber cross section is { b }, the web height of the H-shaped (I-shaped and Chinese character 'wang' -shaped) cross section is H, the clear width set of the stiffening rib plates of the H-shaped (I-shaped and Chinese character 'wang' -shaped) cross section web is { H }, the width (diameter) of the manhole/hand hole is w, the length of the manhole/hand hole is l, and the length of the splicing seam is a.
The single-box single-chamber cross section has a stiffening rib plate clear width set { b } with x elements, which are sequentially marked as b according to the position relation on the plate1,b2……bx。
Web with H-shaped (I-shaped, E-shaped) cross section has y elements in total of stiffening rib plate clear width set { H }, and the elements are sequentially marked as H according to the position relation on the web1,h2……hy。
Step A, presetting high-strength bolt information, which specifically comprises the following contents:
A1. and setting the specification of the high-strength bolt and the pretension force N.
A2. Setting high-strength bolt construction parameters including bolt aperture d0Center distance d of bolt1Distance d from center of bolt to edge of plate2Distance d from bolt center to plate stiffener/H-shaped (I-shaped, E-shaped) cross-section web3。
A3. Setting high-strength bolt calculation parameters including the number m of anti-sliding surfaces at the joint of the high-strength bolt and the anti-sliding coefficient mu of the steel surface of the high-strength bolt0The safety coefficient K, the bolt number improvement coefficient eta, whether the bolts are arranged according to jump holes or not and whether the bolts are arranged in the extension range of the manhole/handhole width or not.
Step B, calculating the maximum number of the single-row bolts of each plate, which specifically comprises the following contents:
B1. and judging whether the section type is a single-box single-chamber section or an H-shaped (I-shaped and Chinese character 'Wang' -shaped) section, executing the step B2 on the single-box single-chamber section, and executing the step B3 on the H-shaped (I-shaped and Chinese character 'Wang' -shaped) section.
B2. Judging the structural form of each plate of the single-box single-chamber section, and if the plate has no stiffening ribs, a manhole and a bolt arranged in the extension range of the manhole/handhole width, executing the step B2-1; if the panel is without stiffeners, manhole, if "bolt is placed within the extension of manhole/handhole width" is false, go to step B2-2; if the board has no stiffener and no manhole, go to step B2-3; if the panel has stiffeners, a manhole, and "bolt is placed within the extension of manhole/handhole width" is true, go to step B2-4; if the panel has stiffeners, a manhole, and "bolt is placed within the extension of manhole/handhole width" is false, step B2-5 is performed; step B2-6 is performed if the panel is ribbed and no manhole.
B2-1 maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000051
taking the center of the semicircle of the manhole/handhole as a (0,0) point, taking the longitudinal direction of the rod piece as an x axis and taking the transverse direction of the rod piece as a y axis, and recording the y coordinate of each bolt to a set { y };
single row maximum bolt number n considering manhole/handhole1The calculation formula is as follows:
Figure BDA0003057206990000052
b2-2 maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000053
single row maximum bolt number n considering manhole/handhole1The calculation formula is as follows:
Figure BDA0003057206990000054
b2-3, maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000055
b2-4, maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000056
taking the center of the semicircle of the manhole/handhole as a (0,0) point, taking the longitudinal direction of the rod piece as an x axis and taking the transverse direction of the rod piece as a y axis, and recording the y coordinate of each bolt to a set { y };
single row maximum bolt number n considering manhole/handhole1The calculation formula is as follows:
Figure BDA0003057206990000057
b2-5 maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000058
single row maximum bolt number n considering manhole/handhole1The calculation formula is as follows:
Figure BDA0003057206990000061
b2-6, maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000062
B3. judging the structural form of each plate with the H-shaped (I-shaped and Chinese character 'wang' shaped) section, and if the plate is a wing plate with the H-shaped (I-shaped and Chinese character 'wang' shaped) section, executing the step B3-1; if the plate is an H-shaped (I-shaped, E-shaped) cross-section web and no stiffener, performing step B3-2; if the plate is an H-shaped (I-shaped, E-shaped) cross-section web and is provided with a stiffening rib, executing the step B3-3;
b3-1 maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000063
b3-2 maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000064
b3-3, maximum number of single-row bolts n0The calculation formula is as follows:
Figure BDA0003057206990000065
step C, calculating the minimum bolt number required by each plate, wherein the minimum bolt number comprises the following contents:
calculating the minimum number [ n ] of bolts required by each plate based on an equal strength design method;
C1. calculating the anti-sliding bearing capacity P of a single bolt according to the following calculation formula:
P＝mμ0N/K (14)
C2. calculating the minimum number [ n ] of bolts required by each plate, wherein the calculation formula is as follows:
[n]＝ηA0[σ]/P (15)
note: a in formula (15)0Is the net area of the base material member, and for the tie rod, is expressed by n0Or n1The area after buckling the hole is the area after considering the compression allowable stress reduction coefficient for the compression bar; [ sigma ]]The strength of the base material is designed.
Step D, arranging the high-strength bolts, which comprises the following steps:
D1. judging whether the plate has a manhole/handhole, and if the judgment result is true, executing a step D2; if the determination result is false, step D3 is executed.
D2. Judging the position relation between the current row of the bolts and the manhole/handhole by taking the abutted seams as a starting point, and executing the step D2-1 if the current row of the bolts is within the range of the straight edge (if any) of the manhole/handhole; if the current bolt is arranged in the range of the semi-circle of the manhole/handhole, executing the step D2-2; if the current bolt is located outside the manhole/handhole range, step D2-3 is performed.
D2-1. total number n per row1Arranging a new row of bolts, connecting n1Adding the number of the current total bolts to the set { n }, and judging whether the number n of the current total bolts is less than the minimum number [ n ]]If the judgment result is true, repeating the step D2-1 until the total number n of bolts is not less than the minimum number [ n ]](at this time, outputting the total number n of bolts and the set { n }) or the current bolt row exceeds the straight edge range of the manhole/handhole; if the judgment result is false, stopping arrangement and outputting the total number n of the bolts and the set { n }.
D2-2, judging whether the bolt is arranged in the extension range of the manhole/handhole width, if so, executing the step D2-2-1; if the judgment result is false, the step D2-2-2 is executed.
D2-2-1. define integer j ═ 0.
And calculating the x coordinate of the current bolt row by taking the center of the semi-circle of the manhole/hand hole as a (0,0) point, the longitudinal direction of the rod piece as an x axis and the transverse direction of the rod piece as a y axis, and combining the x coordinate with a bolt y coordinate set { y } to form a point set { P (x, y) }.
Traverse the set of points { P (x, y) }, when point P is reachediThe distance to the center of the semi-circle of the manhole/handhole is not less than (w/2+ d)2) When j is j + 1.
After traversing, arranging a new row of bolts according to the total number j of each row, adding j to a set { n }, judging whether the current total bolt number n is smaller than the minimum bolt number [ n ], if so, repeating the step D2-2-1 until the total bolt number n is not smaller than the minimum bolt number [ n ] (outputting the total bolt number n and the set { n }) or the row where the current bolt is positioned exceeds the semi-circle range of the manhole/handhole; if the judgment result is false, stopping arrangement and outputting the total number n of the bolts and the set { n }.
D2-2-2, total number n per row1Arranging a new row of bolts, connecting n1Adding the number of the current total bolts to the set { n }, and judging whether the number n of the current total bolts is less than the minimum number [ n ]]If the judgment result is true, repeating the step D2-2-2 until the total bolt number n is not less than the minimum bolt number [ n ]](at this time, outputting the total number n of bolts and the set { n }) or the current bolt row exceeds the semi-circle range of the manhole/handhole; if the judgment result is false, stopping arrangement and outputting the total number n of the bolts and the set { n }.
D2-3, judging whether the bolt is arranged in the extension range of the manhole/handhole width, if so, executing the step D2-3-1; if the judgment result is false, the step D2-3-2 is executed.
D2-3-1, total number n per row0Arranging bolts to connect n0Adding the number of the current total bolts to the set { n }, and judging whether the number n of the current total bolts is less than the minimum number [ n ]]If the judgment result is true, repeating the step D2-3-1 until the total bolt number n is not less than the minimum bolt number [ n ]]Outputting the total bolt number n and the set { n }; if the judgment result is false, stopping arrangement and outputting the total number n of the bolts and the set { n }.
D2-3-2, total number n per row1Arranging bolts to connect n1Adding the number of the current total bolts to the set { n }, and judging whether the number n of the current total bolts is less than the minimum number [ n ]]If the judgment result is true, repeating the step D2-3-2 until the total bolt number n is not less than the minimum bolt number [ n ]]Outputting the total bolt number n and the set { n }; if the judgment result is false, stopping arrangement, and outputting the total number n of bolts and the set { n };
D3. starting from the seam, n per row0Arranging a new row of bolts, connecting n0Adding the number of the current total bolts to the set { n }, and judging whether the number n of the current total bolts is less than the minimum number [ n ]]If the judgment result is true, the step D3 is repeated until the total number n of bolts is not less than the minimum number [ n ] of bolts]Outputting the total bolt number n and the set { n }; if the judgment result is false, stopping arrangement and outputting the total number n of the bolts and the set { n }.
And E, if the hole jumping is not considered, outputting a high-strength bolt design result, otherwise, correcting the bolts exceeding the minimum bolt number [ n ] and outputting the high-strength bolt design result.
E1. Judging whether the bolts are arranged according to the jump holes, and if the judgment result is true, executing a step E2; if the judgment result is false, executing step E3;
E2. number n of bolt jump holesjIs calculated as
Figure BDA0003057206990000081
If n isjIs odd number, nj＝nj-1 (17)
Recording the total number of elements in the set { N } as t, establishing a new set { N }, and making N1＝nt，N2＝n1，N3＝nt-1，N4＝n2……；
Traversing the set { N }, and making k equal to NiIf k is an odd number, making k equal to k-1; if k is not less than njLet N stand fori＝Ni-nj、n＝n-njUpdating the corresponding elements in the set { n }, and stopping traversal; if k < njLet N stand fori＝Ni-k、n＝n-k，nj＝njK, updating the corresponding element in the set { n }, and continuing the traversal;
after traversing is finished, outputting the minimum number [ n ] of bolts and the total number n of bolts; and traversing each element in the set { n }, and outputting the element in a format of 'element 1+ element 2+ … …' as a high-strength bolt arrangement scheme.
E3. Outputting the minimum number [ n ] of bolts and the total number n of bolts; and traversing each element in the set { n }, and outputting the element in a format of 'element 1+ element 2+ … …' as a high-strength bolt arrangement scheme.
Example one
Taking the section of the upper chord of the steel truss girder and the manhole thereof as an example, the section of the upper chord of the steel truss girder consists of two steel plates with the width of 1420mm and the thickness of 28mm and two steel plates with the width of 1300mm and the thickness of 24mm, and stiffening ribs with the height of 240mm and the thickness of 24mm are welded on each steel plate. Manholes are provided in the y1 board, with a 300mm width and 520mm length.
The invention will be further described with reference to the upper chord shown in fig. 2 as an example.
First, high-strength bolt information is set, step A, for this example, the high-strength bolt specification is M30, bolt bore diameter d0Is 33mm, the center distance d of the bolt1Is 100mm, and the distance d from the center of the bolt to the edge of the plate250mm, bolt center to plate stiffener/H-shaped (I-shaped, E-shaped) cross-section web distance d3Is 100 mm.
Then, high-strength bolt calculation parameters are set, wherein the number m of the anti-sliding surfaces at the joint of the high-strength bolt is 2, and the anti-sliding coefficient mu of the steel surface of the high-strength bolt00.45, the safety coefficient K is 1.7, and the number of bolts is increased by a coefficient eta1.1 is taken.
For this example, the calculation conditions are: the section form is a single-box single-chamber section; stiffening ribs are arranged on the y1 plate, the y2 plate, the z1 plate and the z2 plate; the y1 plate is provided with a manhole; the arrangement of the bolts takes the hole jump arrangement into consideration; the bolts are arranged within the extension of the manhole/handhole width.
Calculating the maximum number n of the single-row bolts of each plate according to the step B0And a maximum number of bolts n in a single row considering a manhole/handhole1。
Figure BDA0003057206990000091
And C, calculating the minimum number [ n ] of the bolts required by each plate based on the equal strength design method.
Figure BDA0003057206990000092
According to step D, according to the actual situation, according to n0Or n1Arranging bolts one by one from the edge joint until the total number n of bolts is not less than the minimum number n of bolts]。
Figure BDA0003057206990000093
According to step E, the jump hole is considered in the embodiment, and the bolts exceeding the minimum bolt number [ n ] are corrected.
Figure BDA0003057206990000094
Fig. 3 to 5 are respectively bolt layout diagrams of a y1 plate, a y2 plate, and a z1 plate (z2 plate) plotted according to the calculation results.
The invention designs the high-strength bolt of the steel truss girder member rapidly, covers the common section type of the steel truss girder member, is suitable for the conditions of stiffening ribs and holes/hand holes, supports a plurality of arrangement methods such as jump hole arrangement and the like, basically covers most of calculation conditions in the design of the high-strength bolt of the steel truss girder member, and has strong universality.
The invention realizes the automatic design of the high-strength bolt, can greatly improve the design efficiency, generally needs 3-4 h when the traditional means finishes the design of the high-strength bolt of a long-span steel truss girder bridge, and only needs 3-5 min when the invention finishes the design of the same volume, thereby liberating the design productivity.
The design result output by the invention not only can realize the rapid design of the high-strength bolt of the steel truss girder rod piece, but also can complete the rapid calculation of the net section characteristic and the drawing of the connection diagram of the high-strength bolt of the steel truss girder rod piece by means of the design result.

Claims (10)

1. A high-strength bolt rapid design method for a steel truss girder rod piece is characterized by comprising the following steps: the method comprises the following steps:
(A) presetting high-strength bolt information
The high-strength bolt information comprises high-strength bolt specification and pretension, high-strength bolt construction parameters and high-strength bolt calculation parameters;
(B) calculating the maximum number of single-row bolts of each plate
Calculating the maximum number of single-row bolts of each plate according to the section type of the rod piecen 0And a maximum number of bolts in a single row considering a manhole/handholen 1；
(C) Calculating the minimum number of bolts required for each plate
Based on the equal strength design method, the minimum bolt number required by each plate is calculatedn]；
(D) Arranging high-strength bolts
According to the actual situation, pressn 0Orn 1The bolts are arranged one by one from the splicing seam until the total number of bolts n is not less than the minimum number of boltsn]；
(E) Outputting high-strength bolt design result
If the jump hole is not considered, the design result of the high-strength bolt is directly output; if the jump hole is considered, the number of bolts exceeding the minimum numbern]And after the bolt is corrected, outputting a high-strength bolt design result.
2. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 1, wherein the method comprises the following steps: and (C) constructing parameters of the high-strength bolt in the step (A) comprise the bolt aperture, the bolt center distance, the distance from the bolt center to the plate edge, the distance from the bolt center to the plate stiffening rib/H-shaped (I-shaped and Chinese character 'wang' -shaped) section web plate, whether the bolt is arranged according to jump holes or not and whether the bolt is arranged in the extension range of the manhole/hand hole width or not.
3. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 2, wherein the method comprises the following steps: the shape of the manhole/handhole is round or a round end shape consisting of a rectangle and two semicircles.
4. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 2, wherein the method comprises the following steps: when the current row of bolts does not have a manhole/handhole, arranging the bolts according to the manhole/handhole of the current row of bolts; otherwise, arranging the bolts according to the actual hole opening condition of the row plate where the bolts are located.
5. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 1, wherein the method comprises the following steps: and (B) calculating parameters of the high-strength bolt in the step (A), namely calculating parameters of the allowable anti-sliding bearing capacity of the high-strength bolt.
6. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 1, wherein the method comprises the following steps: the section types of the rod in the step (B) comprise any single-box single-chamber section and H-shaped (I-shaped and Chinese character 'Wang' shaped) section.
7. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 1, wherein the method comprises the following steps: the medium-strength design method in the step (C) refers to a design method in which the designed bearing capacity of the joint is not lower than the bearing capacity of the base material member.
8. A method as claimed in claim 1The high-strength bolt rapid design method for the steel truss girder rod piece is characterized by comprising the following steps of: in step (D) according ton 0Orn 1Arranging bolts row by row from the edge joint, which means that when the current bolt row exists in the manhole/handhole or whether the bolts are arranged in the extension range of the width of the manhole/handhole is false, the bolts are arranged according ton 1Arranging bolts one by one from the splicing seams; when the prior bolt row does not have a manhole/handhole, pressn 0The bolts are arranged one by one from the edge joint.
9. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 1, wherein the method comprises the following steps: in the step (E), the number of bolts exceeding the minimum number of boltsn]The correction of the bolts of (2) means that the total number of bolts is reduced to be larger than the minimum number of boltsn]Is the smallest even number.
10. The method for rapidly designing the high-strength bolt for the steel truss girder rod piece according to the claim 1, wherein the method comprises the following steps: the design result of the high-strength bolts in the step (E) includes the minimum number of bolts for each plate of the steel truss girder rod membern]The total number of bolts used by each plate, the bolt arrangement scheme of each plate and the number of bolts used in each row.
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