CN113806848B - Manufacturing method of tree-shaped multi-segment space angle bending intersecting member - Google Patents
Manufacturing method of tree-shaped multi-segment space angle bending intersecting member Download PDFInfo
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- CN113806848B CN113806848B CN202111118469.1A CN202111118469A CN113806848B CN 113806848 B CN113806848 B CN 113806848B CN 202111118469 A CN202111118469 A CN 202111118469A CN 113806848 B CN113806848 B CN 113806848B
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- 238000005452 bending Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 328
- 239000010959 steel Substances 0.000 claims abstract description 328
- 239000007787 solid Substances 0.000 claims description 38
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Abstract
The embodiment of the invention provides a manufacturing method of a tree-shaped multi-section space angle bending intersecting member, wherein the tree-shaped multi-section space angle bending intersecting member is formed by assembling a plurality of layers of steel column sections, the number of the bottom layer steel column sections is one, the number of the upper layer steel column sections is gradually increased to form a tree-shaped structure, brackets are fixed at the connecting positions of the upper layer steel column section and the lower layer steel column section, and clamping plates are arranged on the plane of intersecting lines between the steel column sections on the same layer. According to the scheme provided by the embodiment of the invention, the physical model of the tree-shaped multi-segment spatial angle bending intersecting member is drawn in the patterning software, and the dimensional parameters of the physical model are utilized to guide the manufacture of the tree-shaped multi-segment spatial angle bending intersecting member, so that the manufacture precision is improved.
Description
Technical Field
The invention relates to the technical field of building steel structures, in particular to a manufacturing method of a tree-shaped multi-section space angle bending intersecting member.
Background
The steel pipe column in the common high-rise buildings, venues and factory buildings is usually a single or multi-heel combined column vertical to the ground. In practical construction, in order to meet the construction requirement of a building structure, the steel pipe column is manufactured into a tree structure from bottom to top to form a tree-shaped multi-section space angle bending intersecting member, and because the structure of the pipe body member is complex, errors are easily generated in the manufacturing process, and the design requirement is difficult to reach, therefore, a manufacturing method of the tree-shaped multi-section space angle bending intersecting member is needed to improve the manufacturing precision.
Disclosure of Invention
Aiming at the problems, the embodiment of the invention provides a manufacturing method of a tree-shaped multi-segment space angle bending intersecting member.
In one aspect of the implementation of the invention, a manufacturing method of a tree-shaped multi-section space angle bending intersecting member is provided, the tree-shaped multi-section space angle bending intersecting member is formed by assembling a plurality of layers of steel column sections, the number of the bottom layer steel column sections is one, the number of the upper layer steel column sections is gradually increased to form a tree-shaped structure, brackets are fixed at the connection positions between the upper layer steel column section and the lower layer steel column section, and clamping plates are arranged on the plane of intersecting lines between the steel column sections on the same layer; the manufacturing method comprises the following steps:
determining the central line of each steel column section according to the control shaft network of the steel column section in the mapping software to obtain a tree-shaped central line of the tree-shaped multi-section space angle bending intersecting member;
sequentially taking each central line as a Z axis to establish a coordinate system, and drawing the steel pipe from a first end point to a second end point of the central line to obtain each steel column segment model;
drawing a clamping plate by taking the intersecting line between two adjacent steel column segment models as a central plane aiming at the steel column segment models which are positioned on the same layer and have the intersecting line;
drawing brackets at the joints of the upper steel column section models and the lower steel column section models to obtain a solid model of the tree-shaped multi-section space angle bending intersecting member;
machining a steel plate into a circular tube by using a plate bending machine, respectively drawing datum lines on the circular tube according to the dimension parameters of each steel column segment model in the solid model, and cutting the circular tube according to the datum lines to obtain steel column segments;
horizontally projecting the solid model to obtain a tree center projection line and a contour projection line of a tree center line and a contour line of the solid model on a horizontal projection plane;
drawing an actual tree-shaped center projection line and an actual contour projection line of the tree-shaped multi-segment space angle bending intersecting member on a horizontal reference surface of an assembly site according to the obtained size parameters of the tree-shaped center projection line and the contour projection line;
positioning the assembly height of each cut steel column segment according to the distance between the solid model and the tree center projection line and the distance between the solid model and the outline projection line, positioning the assembly position of each cut steel column segment according to the position relation among the actual tree center projection line, the actual outline projection line and the adjacent steel column segment models, and completing the assembly of the steel column segments to obtain the steel pipe assembly segment;
and installing brackets on the steel pipe assembly sections according to the installation positions of the brackets in the solid model to finish the manufacture of the tree-shaped multi-section space angle bending intersecting member.
Compared with the prior art, the invention has the beneficial effects that: the physical model of the tree-shaped multi-segment space angle bending intersecting member is drawn in the drawing software, and the dimensional parameters of the physical model are utilized to guide the manufacture of the tree-shaped multi-segment space angle bending intersecting member, so that the manufacture precision is improved.
Optionally, a coordinate system is established sequentially by taking each central line as a Z axis, and a process of drawing the steel pipe from the first end point to the second end point of the central line to obtain each steel column segment model includes:
sequentially taking each central line as a Z axis to establish a coordinate system, and drawing a steel pipe from a first end point of the central line to a second end point, wherein the end of the steel pipe is longer than the second end point by a preset length to obtain an initial model of each steel column section;
and cutting off model parts with more second endpoints from each initial model of the steel column section by taking the end face of the initial model of the steel column section adjacent to the upper or lower initial model of the steel column section as a reference face.
Optionally, drawing reference lines on the round tube according to the size parameters of each steel column segment model in the solid model, and cutting the round tube according to the reference lines to obtain the steel column segments, including:
dividing the lower opening of the steel column segment model equally to obtain lower dividing points positioned at the lower opening, dividing the upper opening of the steel column segment model equally to obtain upper dividing points positioned at the upper opening and corresponding to the lower dividing points one by one, connecting the upper dividing points and the lower dividing points which correspond to each other up and down to obtain datum lines, and measuring the length of each datum line;
drawing a bottom circle at the lower opening of the circular tube along the periphery of the circular tube, wherein the plane of the bottom circle is perpendicular to the axis of the circular tube, drawing actual lower equal dividing points corresponding to the lower equal dividing points on the bottom circle, drawing an actual datum line on the outer skin of the circular tube by taking the point as a starting point and utilizing the length of the datum line of the lower equal dividing point corresponding to the point, sequentially connecting the upper end points of the actual datum line to obtain a top circle, and cutting according to the bottom circle and the top circle to obtain the straight cylinder section steel column section.
Optionally, after cutting according to the bottom circle and the top circle to obtain the straight section steel column section, the method further comprises:
for a steel column section needing to be provided with a clamping plate, taking intersecting lines between the clamping plate and the steel column section model on the solid model, and determining line intersection points of the intersecting lines and a datum line, upper intersection points of the intersecting lines and upper ports of the steel column section model and lower intersection points of the intersecting lines and lower ports of the steel column section model respectively;
measuring the distance between the intersection point of the line and the lower opening of the steel column segment model, the lower arc length between the quadrant point adjacent to the lower intersection point in the lower bisection point and the lower intersection point, and the upper arc length between the quadrant point adjacent to the upper intersection point in the upper bisection point and the upper intersection point respectively;
and drawing an actual intersecting line on the straight section steel column section according to the measured distance, the upper arc length and the lower arc length, and cutting according to the actual intersecting line to obtain the steel column section with the intersecting opening.
Optionally, positioning the assembly height of each cut steel column segment according to the distance between the solid model and the tree-shaped center projection line and the contour projection line, positioning the assembly position of each cut steel column segment according to the actual tree-shaped center projection line and the actual contour projection line, and completing the process of assembling the steel column segments to obtain the steel tube assembly segment, including:
determining quadrant projection points and center projection points of the quadrant points and the center points of the port parts of the steel column segment model on a horizontal projection plane, and measuring distances between the quadrant points and the quadrant projection points and between the center points and the center projection points;
drawing an actual quadrant projection point and an actual center projection point corresponding to the quadrant projection point and the center projection point in the area of the actual tree-shaped center projection line and the actual contour projection line, placing the steel column segment on a fixed unequal-height jig frame in the area, and adjusting the distances between the actual quadrant point and the actual quadrant projection point of the steel column segment and between the center point and the actual center projection point to be equal to the distances between the measured quadrant point and the quadrant projection point and between the center point and the center projection point;
and (3) suspending a lead drop on the outer wall of the steel column section and adjusting the assembly position of the steel column section so that the longitudinal projection of the steel column section coincides with the actual profile projection line.
Optionally, the method further comprises adjusting the relative assembly position between adjacent steel column segments, including:
measuring quadrant arc lengths between two adjacent target quadrant points on ports of two adjacent steel column segment models in the solid model respectively;
adjusting the steel column sections by using the measured quadrant arc lengths, so that the arc length between two actual target quadrant points corresponding to the two target quadrant point positions on the ports of two adjacent steel column sections is the same as the measured quadrant arc length;
and assembling clamping plates between the steel column sections which are positioned on the same layer and have intersecting lines, and welding and fixing after the assembly is completed to obtain the steel pipe assembly sections.
Optionally, the process of installing the bracket on the steel pipe assembly segment according to the installation position of the bracket in the solid model includes:
determining an intersecting line between a flange plate of the bracket and the steel column segment model in the solid model, determining an intersecting point of a connecting line between the flange intersecting line and quadrant points at the upper port and the lower port of the steel column segment model as a flange intersecting point, and respectively measuring the distance between the flange intersecting point and the quadrant points at the upper port of the steel column segment model as a flange distance;
determining an intersection point between the center line of the flange plate and the intersecting line of the flange as a center intersection point, and measuring the distance between the center intersection point and the adjacent flange intersection point as a center distance;
and adjusting the assembling height of the bracket on the steel column section according to the flange distance, and adjusting the assembling position between the bracket and the steel column section according to the center distance, thereby completing the installation of the bracket.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a tree-shaped multi-segment spatial angle bending intersecting member according to an embodiment of the invention;
FIG. 2 is a schematic view of a tree center line of a tree-shaped multi-segment spatial angle bending intersecting member according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a steel column segment model according to an embodiment of the present invention;
fig. 4 is a schematic drawing of a steel column segment datum line according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a structure of a cut steel column segment according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of intersecting lines on a model according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of arc length measurement according to an embodiment of the present invention;
FIG. 8 is a schematic drawing showing an intersecting line drawing on a steel column segment according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a steel column segment with intersecting openings according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a projection point of a lower port of a steel column segment model according to an embodiment of the present invention;
FIG. 11 is a schematic view of a projection point on a horizontal reference plane according to an embodiment of the present invention;
FIG. 12 is a schematic view of an embodiment of the present invention for adjusting the port assembly on a steel column segment;
fig. 13 is a schematic view illustrating an assembly adjustment of a lower port of a steel column segment according to an embodiment of the present invention;
FIG. 14 is a schematic view of the assembly arc length of adjacent steel column segments provided by an embodiment of the present invention;
FIG. 15 is a schematic view of an assembled steel column segment according to an embodiment of the present invention;
FIG. 16 is a schematic view of intersecting lines between a bracket and a steel column segment model according to an embodiment of the present invention;
FIG. 17 is a schematic view of a bracket and steel column segment assembly intersection line according to an embodiment of the present invention;
fig. 18 is a schematic view of an assembly center line of a bracket and a steel column segment according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. The exemplary embodiments of the present invention and the descriptions thereof are used herein to explain the present invention, but are not intended to limit the invention.
The embodiment of the invention provides a manufacturing method of a tree-shaped multi-section space angle bending intersecting member, which is formed by assembling a plurality of layers of steel column sections, wherein the number of the bottom layer steel column sections is one, the number of the upper layer steel column sections is gradually increased to form a tree-shaped structure, brackets are fixed at the connection positions between the upper layer steel column section and the lower layer steel column section, and clamping plates are arranged on the plane of intersecting lines between the steel column sections on the same layer; referring to fig. 1, a tree-shaped multi-segment space angle bending intersecting member with a four-layer structure provided by an embodiment of the invention is manufactured by the following steps:
determining the central line of each steel column section according to the control shaft network of the steel column section in the mapping software to obtain a tree-shaped central line of the tree-shaped multi-section space angle bending intersecting member shown in figure 2; wherein, line segment AB is the central line of steel column segment 1, line segment BC is the central line of steel column segment 2-1, line segment BD is the central line of steel column segment 2-2, line segment CE is the central line of steel column segment 3-1, line segment DF is the central line of steel column segment 3-2, line segment EG is the central line of steel column segment 4-1, line segment EH is the central line of steel column segment 4-2, and line segment FJ is the central line of steel column segment 4-3; CAD can be selected as the drawing software.
Sequentially taking each central line as a Z axis to establish a coordinate system, and drawing the steel pipe from a first end point to a second end point of the central line to obtain each steel column segment model;
drawing a clamping plate by taking the intersecting line between two adjacent steel column segment models as a central plane aiming at the steel column segment models which are positioned on the same layer and have the intersecting line;
drawing brackets at the joints of the upper steel column section models and the lower steel column section models to obtain a solid model of the tree-shaped multi-section space angle bending intersecting member;
machining a steel plate into a circular tube by using a plate bending machine, respectively drawing datum lines on the circular tube according to the dimension parameters of each steel column segment model in the solid model, and cutting the circular tube according to the datum lines to obtain steel column segments;
horizontally projecting the solid model to obtain a tree center projection line and a contour projection line of a tree center line and a contour line of the solid model on a horizontal projection plane;
drawing an actual tree-shaped center projection line and an actual contour projection line of the tree-shaped multi-segment space angle bending intersecting member on a horizontal reference surface of an assembly site according to the obtained size parameters of the tree-shaped center projection line and the contour projection line;
positioning the assembly height of each cut steel column segment according to the distance between the solid model and the tree center projection line and the distance between the solid model and the outline projection line, positioning the assembly position of each cut steel column segment according to the position relation among the actual tree center projection line, the actual outline projection line and the adjacent steel column segment models, and completing the assembly of the steel column segments to obtain the steel pipe assembly segment;
and installing brackets on the steel pipe assembly sections according to the installation positions of the brackets in the solid model to finish the manufacture of the tree-shaped multi-section space angle bending intersecting member.
In the implementation, in the process of drawing the section models of the steel column, a coordinate system can be established by taking each central line as a Z axis in sequence, drawing the steel pipe from a first end point of the central line to a second end point, and the end part of the steel pipe is longer than the second end point by a preset length to obtain the initial model of each section of the steel column; and cutting off model parts with more second endpoints from the initial models of the steel column segments by taking the end surfaces of the initial models of the steel column segments adjacent to the upper or lower initial models of the steel column segments as reference surfaces.
In the drawing process, a top-down drawing mode and a bottom-up drawing mode can be adopted, specifically, a top-down drawing mode can be adopted for a top-layer steel column segment model, a bottom-up drawing mode is adopted for other layers of steel column segment models, and the drawing process of each layer of steel column segment models is illustrated by taking the structure shown in fig. 1 and 2 as an example:
1) And establishing a coordinate system by taking the central line AB of the steel column section 1 as a Z axis. Drawing an initial model of the steel column segment 1, wherein the bottom of the initial model is used for drawing the steel pipe upwards according to the lower point A of the central line of the initial model, and the top of the initial model is higher than the upper point B of the central line of the initial model.
2) And establishing a coordinate system by taking the central line BC of the steel column segment 2-1 as a Z axis. Drawing an initial model of a steel column segment 2-1, wherein the bottom of the initial model is used for drawing a steel pipe upwards according to a lower point B of the central line of the initial model, and the top of the initial model is higher than an upper point C of the central line of the initial model.
3) And cutting off redundant steel pipes above the point B by taking the bottom plane of the initial model of the steel column segment 2-1 as a reference plane at the top of the initial model of the steel column segment 1, and finishing drawing of the model of the steel column segment 1.
4) And establishing a coordinate system by taking the central line BD of the steel column segment 2-2 as a Z axis. Drawing an initial model of the steel column segment 2-2, drawing a steel pipe upwards according to a lower point B of the center line at the bottom, moving the steel pipe downwards along the Z axis of the steel pipe along an upper point D of the top higher than the center line so that the lower part of the steel pipe is lower than the point B, cutting off the redundant part of the steel pipe with the lower part lower than the point B by taking the bottom plane of the initial model of the steel column segment 2-1 as a reference plane, and completing the lower part treatment of the model of the steel column segment 2-2.
5) And establishing a coordinate system by taking the central line CE of the steel column segment 3-1 as a Z axis. And drawing an initial model of the steel column segment 3-1, and drawing a steel pipe upwards at the bottom according to the lower point C of the central line of the steel column segment until the central line of the top end is positioned at E, thereby finishing the drawing of the model of the steel column segment 3-1.
6) And cutting off redundant steel pipes above the upper part of the C point by taking the bottom plane of the steel column section 3-1 model as a reference plane at the top of the steel column section 2-1 initial model, and finishing drawing of the steel column section 2-1 model.
7) And establishing a coordinate system by taking the central line DF of the steel column segment 3-2 as a Z axis. And drawing an initial model of the steel column segment 3-2, and drawing a steel pipe upwards from the bottom according to the lower point D of the central line of the steel column segment until the point F of the central line of the top end to finish the drawing of the model of the steel column segment 3-2.
8) And cutting off redundant steel pipes above the upper part of the point D by taking the bottom plane of the steel column section 3-2 model as a reference plane at the top of the steel column section 2-2 initial model, and finishing drawing of the steel column section 2-2 model.
9) And establishing a coordinate system by taking the central line EG of the steel column segment 4-1 as a Z axis. Drawing an initial model of a steel column segment 4-1, and drawing a steel pipe downwards from a top G point until the position is lower than a bottom E point; and cutting off the redundant steel pipes below the E point by taking the top plane of the steel column section 3-1 model as a reference plane, and finishing the drawing of the steel column section 4-1 model.
10 A coordinate system is established with the center line EH of the steel column segment 4-2 as a Z axis. Drawing an initial model of a steel column segment 4-2, and drawing a steel pipe downwards from a top H point until the position is lower than a bottom point E; and cutting off the redundant steel pipes below the E point by taking the top plane of the steel column section 3-1 model as a reference plane, and finishing the drawing of the steel column section 4-2 model.
11 A coordinate system is established by taking the central line FJ of the steel column segment 4-3 as a Z axis. Drawing an initial model of a steel column segment 4-3, and drawing a steel pipe downwards from a point J at the top of the initial model until the steel pipe is lower than a bottom point F; and cutting off the redundant steel pipes below the point F by taking the top plane of the steel column section 3-2 model as a reference plane, and finishing the drawing of the steel column section 4-3 model.
In practice, when the round tube is cut to obtain the steel column segment, the method comprises the following steps: manufacturing a straight section steel column section and a steel column section with a through hole;
specifically, the manufacturing process of the straight section steel column section comprises the following steps: dividing the lower opening of the steel column segment model equally to obtain lower dividing points positioned at the lower opening, dividing the upper opening of the steel column segment model equally to obtain upper dividing points positioned at the upper opening and corresponding to the lower dividing points one by one, connecting the upper dividing points and the lower dividing points which correspond to each other up and down to obtain datum lines, and measuring the length of each datum line;
drawing a bottom circle at the lower opening of the circular tube along the periphery of the circular tube, wherein the plane of the bottom circle is perpendicular to the axis of the circular tube, drawing actual lower equal dividing points corresponding to the lower equal dividing points on the bottom circle, drawing an actual datum line on the outer skin of the circular tube by taking the point as a starting point and utilizing the length of the datum line of the lower equal dividing point corresponding to the point, sequentially connecting the upper end points of the actual datum line to obtain a top circle, and cutting according to the bottom circle and the top circle to obtain the straight cylinder section steel column section.
The production of a straight section steel column segment is described below by taking the steel column segment 1 as an example in connection with fig. 3,4 and 5:
1) As shown in fig. 3, a coordinate system is established by taking the central line AB of the steel column segment 1 model as a Z axis, a circle is drawn by taking the point a as a circle center, the bottom circle 28 is equally divided, lower opening 28 points (Q1, 2,3,4,5,6,7, Q2,9, 10, 11, 12, 13, 14, Q3, 16, 17, 18, 19, 20, 21, Q4, 23, 24, 25, 26, 27, 28 equally divided points) are formed, and 4 quadrant points of the bottom circle are Q1, Q2, Q3, Q4 respectively.
2) The upper mouth 28 points (Q1, 2,3,4,5,6,7, Q2,9, 10, 11, 12, 13, 14, Q3, 16, 17, 18, 19, 20, 21, Q4, 23, 24, 25, 26, 27, 28) are formed on the upper mouth of the mould of the section 1 of the steel column of the pipe sheath streaking in the positive direction of the Z axis parallel to the centre line AB (Z axis direction).
(4) When the round tube is coiled by a plate coiling machine, the length of the coiled round tube is at least longer than the net length +5mm of the model of the steel column segment 1.
(5) The solid round tube skin is scored as shown in fig. 4: the plane of the lower mouth bottom circle of the steel pipe segment 1 is perpendicular to the center line of the steel pipe segment 1. Dividing the bottom circle 28 equally, and drawing points Q1 (quadrant points), 2,3,4,5,6,7, Q2 (quadrant points), 9, 10, 11, 12, 13, 14, Q3 (quadrant points), 16, 17, 18, 19, 20, 21, Q4 (quadrant points), 23, 24, 25, 26, 27, 28; measuring the lengths of line segments LQ1-Q1, L2-2, L3-3, L4-4, L5-5, L6-6, L7-7, L Q2-Q2, L9-9, L10-10, L11-11, L12-12, L13-13, L14-14, LQ3-Q3, L16-16, L17-17, L18-18, L19-19, L20-20, L21-21, LQ4-Q4, L23-23, L24-24, L25-25, L26-26, L27-27 and L28-28 on a model in the positive Z-axis direction of a pipe skin parallel to a central line AB (Z-axis direction), and drawing lines on a round pipe; the smooth curves connecting the upper ports 28 points (Q1, 2,3,4,5,6,7, Q2,9, 10, 11, 12, 13, 14, Q3, 16, 17, 18, 19, 20, 21, Q4, 23, 24, 25, 26, 27, 28) of the steel pipe segment 1 are drawn on the outer skin of the round pipe to obtain a top circle.
(6) As shown in fig. 5, the excess round pipe is cut off along the bottom circle and the top circle formed as described above, and the steel pipe segment 1 is obtained.
When the steel column section with the intersecting opening is manufactured, the manufacturing process of the straight cylinder section is the same as that described above, and then intersecting lines between the clamping plates and the steel column section model are required to be taken from the solid model, and the intersecting points of the intersecting lines and the datum lines, the upper intersecting points of the intersecting lines and the upper opening of the steel column section model and the lower intersecting points of the intersecting lines and the lower opening of the steel column section model are determined;
measuring the distance between the intersection point of the line and the lower opening of the steel column segment model, the lower arc length between the quadrant point adjacent to the lower intersection point in the lower bisection point and the lower intersection point, and the upper arc length between the quadrant point adjacent to the upper intersection point in the upper bisection point and the upper intersection point respectively;
and drawing an actual intersecting line on the straight section steel column section according to the measured distance, the upper arc length and the lower arc length, and cutting according to the actual intersecting line to obtain the steel column section with the intersecting opening.
The following description will be given of the process of manufacturing the steel column segment with the intersecting opening with reference to fig. 6,7, 8 and 9 by taking the steel column segment 2-1 as an example:
(7) As shown in fig. 6, an intersecting line of the clamping plate and the steel column section 2-1 model is taken on the model, wherein the intersection point of the sheath base circle of the steel tube section 2-1 model is 32' point, the intersection points of the steel tube section 2-1 model and the line segments 33-33, 34-34 and 35-35 are respectively line segment intersection points 33', 34', 35', and the upper opening sheath intersection point is 36'; the above method is parameterized to obtain the intersection point 43',44',45', 46'47' of the other side with the intersecting line.
(8) Measuring the length of line segments L33-33', L34-34', L33-35' on the model, as shown in FIG. 7, measuring the arc length h1 between point 32' and point Q5, and measuring the arc length h2 between point 36' and point Q6;
(9) On the outer skin of the solid steel pipe segment 2-1, as shown in FIG. 8, the arc lengths h1, h2 are determined according to the line segments L33-33', L34-34', L33-35' of the above-mentioned (7) and (8); and h2, establishing a coordinate system by taking the central line of the steel pipe segment 2-1 as a Z axis, making parallel lines passing through the lower opening point 36', intersecting the upper opening sheath point 36', and connecting the points 32', 33', 34', 35', 36' (the upper opening sheath point) in sequence by adopting a 1.5m steel ruler to form an intersecting line ' G1 ' with one side of the clamping plate.
(10) The other side intersecting line "G2" formed by the points 43' (upper port skin intersection points), 44',45', 46', 47' and the splint is obtained by referring to the above method.
(11) The right redundant steel pipe is cut off along intersecting lines G1, G2 as shown in FIG. 9 to obtain a steel pipe segment 2-1.
In the case that the intersecting openings between some steel column sections with intersecting openings, such as the steel column sections 3-1 and 3-2, do not penetrate through the upper and lower ports of the steel column sections, the intersecting lines and the upper ports have no intersection points, and the manufacture can be completed without measuring the upper arc length.
In practice, the fabrication of the steel pipe assembly segment specifically includes: determining quadrant projection points and center projection points of the quadrant points and the center points of the port parts of the steel column segment model on a horizontal projection plane, and measuring distances between the quadrant points and the quadrant projection points and between the center points and the center projection points;
drawing an actual quadrant projection point and an actual center projection point corresponding to the quadrant projection point and the center projection point in the area of the actual tree-shaped center projection line and the actual contour projection line, placing the steel column segment on a fixed unequal-height jig frame in the area, and adjusting the distances between the actual quadrant point and the actual quadrant projection point of the steel column segment and between the center point and the actual center projection point to be equal to the distances between the measured quadrant point and the quadrant projection point and between the center point and the center projection point;
and (3) suspending a lead drop on the outer wall of the steel column section and adjusting the assembly position of the steel column section so that the longitudinal projection of the steel column section coincides with the actual profile projection line.
After the steel column sections are hoisted, the assembly positions between two adjacent steel column sections also need to be adjusted, and the method specifically comprises the following steps:
measuring quadrant arc lengths between two adjacent target quadrant points on ports of two adjacent steel column segment models in the solid model respectively;
adjusting the steel column sections by using the measured quadrant arc lengths, so that the arc length between two actual target quadrant points corresponding to the two target quadrant point positions on the ports of two adjacent steel column sections is the same as the measured quadrant arc length;
and assembling clamping plates between the steel column sections which are positioned on the same layer and have intersecting lines, and welding and fixing after the assembly is completed to obtain the steel pipe assembly sections.
The following describes the process of manufacturing the steel pipe assembly section with reference to fig. 10, 11, 12, 13, 14 and 15, taking the steel column section 1 and the steel column section 2-1 as an example:
(1) As shown in fig. 10, the positions of the projection points Q1', Q2', Q3', Q4' of the four quadrant points Q1, Q2, Q3, Q4 of the lower port and the projection point a 'of the point a, and the length dimensions of the line segments Q1', Q2', Q3', Q4', AA' are determined in the model of the steel column segment 1.
(2) As shown in fig. 11, the positions of the points Q1', Q2', Q3', Q4' and a 'determined in the model in the above (1) are marked in the horizontal reference plane of the assembly site to determine the points of the points Q1', Q2', Q3', Q4 'and a'.
(3) As shown in fig. 12, the manufactured steel column segment 1 is placed on an unequal-height jig frame, the four quadrant points Q1, Q2, Q3, Q4 and the point a of the lower port are respectively used for hanging the wire downward, whether the vertex of the wire downward coincides with the corresponding projection points Q1', Q2', Q3', Q4' and a 'in the ground sample is checked, and whether the lengths of the measured line segments Q1', Q2', Q3', Q4', AA' coincide with the measured sizes in the model is measured; respectively hanging wire weights on the outer walls of two ends of the shell ring to check whether the longitudinal projection of the segment steel pipe coincides with the projection line of the outer contour of the ground sample; as shown in fig. 13, the line drop is downward through the upper port quadrant points Q1 and Q2, whether the line drop vertex coincides with the corresponding projection points Q1', Q2' in the ground sample is checked, and the line segments Q1', Q2' are measured; when the deviation occurs, the adjustment is carried out to be qualified.
(4) As shown in fig. 14, segment 2-1 is placed on the jig frame. Measuring arc lengths (89 mm) of a lower port quadrant point Q8 of the steel column segment 2-1 model and an upper port quadrant point Q4 of the steel column segment 1 model; marking a mark on the outer skin of the steel column segment 2-1, and aligning the mark with a quadrant point Q4 of the steel column segment 1 during assembly; measuring arc lengths (89 mm) of a lower port quadrant point Q5 of the steel column segment 2-1 model and an upper port quadrant point Q1 of the steel column segment 1 model, and marking a mark on the outer skin of the steel column segment 2-1, wherein the mark is aligned with the quadrant point Q1 of the steel column segment 1 during assembly; as shown in fig. 15, the method referring to the steel column segment 1 checks whether the steel column segment 2-1 tube skin longitudinal direction coincides with its outer contour projection line, and the positions of the upper port quadrant points Q5, Q8.
The intersecting openings of the clamping plates, which are arranged on the steel column sections, are aligned.
Finally, the bracket is installed, which comprises the following steps:
determining an intersecting line between a flange plate of the bracket and the steel column segment model in the solid model, determining an intersecting point of a connecting line between the flange intersecting line and quadrant points at the upper port and the lower port of the steel column segment model as a flange intersecting point, and respectively measuring the distance between the flange intersecting point and the quadrant points at the upper port of the steel column segment model as a flange distance;
determining an intersection point between the center line of the flange plate and the intersecting line of the flange as a center intersection point, and measuring the distance between the center intersection point and the adjacent flange intersection point as a center distance;
and adjusting the assembling height of the bracket on the steel column section according to the flange distance, and adjusting the assembling position between the bracket and the steel column section according to the center distance, thereby completing the installation of the bracket.
The bracket generally comprises an upper flange and a lower flange, the assembly principle of the upper flange and the lower flange is the same, and the mounting process of the bracket is described below by taking the assembly of the lower flange plate in the bracket as an example in connection with fig. 16, 17 and 18:
(1) As shown in fig. 16, the intersecting line of the bracket and the steel column segment 1 is obtained by taking the plane of the lower surface of the lower flange plate as a cutting plane. The intersection points of the intersecting line and buses Q1Q1, Q2Q2, Q3Q3 and Q4Q4 formed by connecting the upper and lower port quadrants of the steel column section 1 are respectively Q1, Q2, Q3 and Q4; the center line F1F1 of the lower surface of the bracket lower flange plate and the intersecting line intersect at the point F1. Measuring the length LQ1Q1 of the port quadrant points Q1 to Q1, the length LQ2Q2 of the quadrant points Q2 to Q2, the length LQ3Q3 of the quadrant points Q3 to Q3, and the length LQ4Q4 of the quadrant points Q4 to Q4; and measuring the length hf1q3 of the point f1 along the steel column segment 1 skin intersection line to q3;
(2) During assembly, on four buses Q1Q1, Q2Q2, Q3Q3 and Q4Q4 of the steel column segment 1 component, the intersection points Q1, Q2, Q3 and Q4 of the bracket lower flange plate and the steel column outer skin are found according to LQ1Q1, LQ2Q2, LQ3Q3 and LQ4 measured in the (1) above, and four points of connection Q1, Q2, Q3 and Q4 form oval intersecting lines; measuring the length hf1q3 from the intersection point q3 to q4 along the tubular column oval intersecting line to obtain an intersection point F1 of the center line F1F1 of the lower surface of the bracket flange plate intersecting with the outer skin oval intersecting line, as shown in fig. 17; when the lower flange plate is assembled, the center line of the bracket of the lower flange plate is overlapped with the f1 point of the outer skin of the pipe column section, other parts are assembled in an aligned mode by taking the oval intersecting line as a datum line, and the annular stiffening part of the lower flange plate is overlapped with the oval intersecting line, as shown in fig. 18, so that assembly is completed;
after the whole assembly of the tree-shaped multi-section space angle bending intersecting member is completed, the assembly of accessories such as lifting lugs and the like can be further carried out, so that the follow-up lifting is convenient.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (7)
1. A manufacturing method of a tree-shaped multi-section space angle bending intersecting member is characterized in that the tree-shaped multi-section space angle bending intersecting member is formed by assembling a plurality of layers of steel column sections, the number of the bottom layer steel column sections is one, the number of the upper layer steel column sections is gradually increased to form a tree-shaped structure, brackets are fixed at the connecting positions of the upper layer steel column section and the lower layer steel column section, and clamping plates are arranged on the planes of intersecting lines between the steel column sections on the same layer; the manufacturing method comprises the following steps:
determining the central line of each steel column section according to the control shaft network of the steel column section in the mapping software to obtain a tree-shaped central line of the tree-shaped multi-section space angle bending intersecting member;
sequentially taking each central line as a Z axis to establish a coordinate system, and drawing the steel pipe from a first end point to a second end point of the central line to obtain each steel column segment model;
drawing a clamping plate by taking the intersecting line between two adjacent steel column segment models as a central plane aiming at the steel column segment models which are positioned on the same layer and have the intersecting line;
drawing brackets at the joints of the upper steel column section models and the lower steel column section models to obtain a solid model of the tree-shaped multi-section space angle bending intersecting member;
machining a steel plate into a circular tube by using a plate bending machine, respectively drawing datum lines on the circular tube according to the dimension parameters of each steel column segment model in the solid model, and cutting the circular tube according to the datum lines to obtain steel column segments;
horizontally projecting the solid model to obtain a tree center projection line and a contour projection line of a tree center line and a contour line of the solid model on a horizontal projection plane;
drawing an actual tree-shaped center projection line and an actual contour projection line of the tree-shaped multi-segment space angle bending intersecting member on a horizontal reference surface of an assembly site according to the obtained size parameters of the tree-shaped center projection line and the contour projection line;
positioning the assembly height of each cut steel column segment according to the distance between the solid model and the tree center projection line and the distance between the solid model and the outline projection line, positioning the assembly position of each cut steel column segment according to the position relation among the actual tree center projection line, the actual outline projection line and the adjacent steel column segment models, and completing the assembly of the steel column segments to obtain the steel pipe assembly segment;
and installing brackets on the steel pipe assembly sections according to the installation positions of the brackets in the solid model to finish the manufacture of the tree-shaped multi-section space angle bending intersecting member.
2. The method of claim 1, wherein the step of sequentially establishing a coordinate system with each centerline as a Z axis, and drawing the steel pipe from the first end point to the second end point of the centerline to obtain each steel column segment model comprises the steps of:
sequentially taking each central line as a Z axis to establish a coordinate system, and drawing a steel pipe from a first end point of the central line to a second end point, wherein the end of the steel pipe is longer than the second end point by a preset length to obtain an initial model of each steel column section;
and cutting off model parts with more second endpoints from each initial model of the steel column section by taking the end face of the initial model of the steel column section adjacent to the upper or lower initial model of the steel column section as a reference face.
3. The method of manufacturing as set forth in claim 1, wherein the process of drawing reference lines on the round tube according to the dimensional parameters of each steel column segment model in the solid model, and cutting the round tube according to the reference lines to obtain the steel column segments comprises:
dividing the lower opening of the steel column segment model equally to obtain lower dividing points positioned at the lower opening, dividing the upper opening of the steel column segment model equally to obtain upper dividing points positioned at the upper opening and corresponding to the lower dividing points one by one, connecting the upper dividing points and the lower dividing points which correspond to each other up and down to obtain datum lines, and measuring the length of each datum line;
drawing a bottom circle at the lower opening of the circular tube along the periphery of the circular tube, wherein the plane of the bottom circle is perpendicular to the axis of the circular tube, drawing actual lower equal dividing points corresponding to the lower equal dividing points on the bottom circle, drawing an actual datum line on the outer skin of the circular tube by taking the point as a starting point and utilizing the length of the datum line of the lower equal dividing point corresponding to the point, sequentially connecting the upper end points of the actual datum line to obtain a top circle, and cutting according to the bottom circle and the top circle to obtain the straight cylinder section steel column section.
4. The method of manufacturing as claimed in claim 3, wherein after cutting according to the bottom circle and the top circle to obtain the straight section steel column segment, further comprising:
for a steel column section needing to be provided with a clamping plate, taking intersecting lines between the clamping plate and the steel column section model on the solid model, and determining line intersection points of the intersecting lines and a datum line, upper intersection points of the intersecting lines and upper ports of the steel column section model and lower intersection points of the intersecting lines and lower ports of the steel column section model respectively;
measuring the distance between the intersection point of the line and the lower opening of the steel column segment model, the lower arc length between the quadrant point adjacent to the lower intersection point in the lower bisection point and the lower intersection point, and the upper arc length between the quadrant point adjacent to the upper intersection point in the upper bisection point and the upper intersection point respectively;
and drawing an actual intersecting line on the straight section steel column section according to the measured distance, the upper arc length and the lower arc length, and cutting according to the actual intersecting line to obtain the steel column section with the intersecting opening.
5. The method of manufacturing as set forth in claim 1, wherein positioning the assembly height of each cut steel column segment according to the distance between the solid model and the tree-shaped center projection line and the contour projection line, positioning the assembly position of each cut steel column segment according to the actual tree-shaped center projection line and the actual contour projection line, and completing the assembly of the steel column segments to obtain the steel pipe assembly segment, comprises:
determining quadrant projection points and center projection points of the quadrant points and the center points of the port parts of the steel column segment model on a horizontal projection plane, and measuring distances between the quadrant points and the quadrant projection points and between the center points and the center projection points;
drawing an actual quadrant projection point and an actual center projection point corresponding to the quadrant projection point and the center projection point in the area of the actual tree-shaped center projection line and the actual contour projection line, placing the steel column segment on a fixed unequal-height jig frame in the area, and adjusting the distances between the actual quadrant point and the actual quadrant projection point of the steel column segment and between the center point and the actual center projection point to be equal to the distances between the measured quadrant point and the quadrant projection point and between the center point and the center projection point;
and (3) suspending a lead drop on the outer wall of the steel column section and adjusting the assembly position of the steel column section so that the longitudinal projection of the steel column section coincides with the actual profile projection line.
6. The method of manufacturing of claim 5, further comprising adjusting the relative assembly positions between adjacent steel column segments, comprising:
measuring quadrant arc lengths between two adjacent target quadrant points on ports of two adjacent steel column segment models in the solid model respectively;
adjusting the steel column sections by using the measured quadrant arc lengths, so that the arc length between two actual target quadrant points corresponding to the two target quadrant point positions on the ports of two adjacent steel column sections is the same as the measured quadrant arc length;
and assembling clamping plates between the steel column sections which are positioned on the same layer and have intersecting lines, and welding and fixing after the assembly is completed to obtain the steel pipe assembly sections.
7. The method of manufacturing as claimed in claim 1, wherein the process of installing brackets on the steel pipe assembly sections according to the installation positions of brackets in the solid model comprises:
determining an intersecting line between a flange plate of the bracket and the steel column segment model in the solid model, determining an intersecting point of a connecting line between the flange intersecting line and quadrant points at the upper port and the lower port of the steel column segment model as a flange intersecting point, and respectively measuring the distance between the flange intersecting point and the quadrant points at the upper port of the steel column segment model as a flange distance;
determining an intersection point between the center line of the flange plate and the intersecting line of the flange as a center intersection point, and measuring the distance between the center intersection point and the adjacent flange intersection point as a center distance;
and adjusting the assembling height of the bracket on the steel column section according to the flange distance, and adjusting the assembling position between the bracket and the steel column section according to the center distance, thereby completing the installation of the bracket.
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| JP2004169527A (en) * | 2002-11-18 | 2004-06-17 | Takahiro Kanzaki | Design/construction method for elliptical structure and the structure |
| CN104847020A (en) * | 2015-05-14 | 2015-08-19 | 浙江精工钢结构集团有限公司 | Limb type circular tube node transferring structure and manufacturing method thereof |
| CN112144664A (en) * | 2020-10-10 | 2020-12-29 | 中国建筑第八工程局有限公司 | Crotch column bowl node structure of large-space steel structure and manufacturing method thereof |
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| FR1520899A (en) * | 1966-03-28 | 1968-04-12 | construction element and enclosure made from this construction element | |
| JP2004169527A (en) * | 2002-11-18 | 2004-06-17 | Takahiro Kanzaki | Design/construction method for elliptical structure and the structure |
| CN104847020A (en) * | 2015-05-14 | 2015-08-19 | 浙江精工钢结构集团有限公司 | Limb type circular tube node transferring structure and manufacturing method thereof |
| CN112144664A (en) * | 2020-10-10 | 2020-12-29 | 中国建筑第八工程局有限公司 | Crotch column bowl node structure of large-space steel structure and manufacturing method thereof |
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