CN111414662B - Method for assembling strip-shaped curved surface building skin by using linear profile - Google Patents
Method for assembling strip-shaped curved surface building skin by using linear profile Download PDFInfo
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- CN111414662B CN111414662B CN202010242169.3A CN202010242169A CN111414662B CN 111414662 B CN111414662 B CN 111414662B CN 202010242169 A CN202010242169 A CN 202010242169A CN 111414662 B CN111414662 B CN 111414662B
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Abstract
The invention relates to the technical field of building design, and provides a method for assembling a strip-shaped curved building skin by using a linear profile. According to the method, a middle branching line is formed in the middle of a strip-shaped curved surface according to an upper boundary line and a lower boundary line of the strip-shaped curved surface; correspondingly connecting the N+1 cutting points on the upper boundary line and the lower boundary line to determine profile axes, and obtaining N+1 profile axes; the long-side direction of the n+1 sections is obtained, the long-side direction and the axis of the sections are determined, a series of continuously-changed sections can be generated by arranging in an XYZ space coordinate system, and the visual effect of the strip-shaped curved surface is simulated; by adopting the design method, the strip-shaped curved surface is subjected to geometric information analysis, the inclination angle and the length of each section bar are adjusted, the section bars are arranged along the strip-shaped curved surface, a series of continuously-changed section bar sequences are formed, and the visual effect of the strip-shaped curved surface is simulated, so that the strip-shaped curved surface building skin is formed, the linear section bars are convenient to produce and disassemble, and curved surface building skins with different forms can be conveniently assembled.
Description
Technical Field
The invention belongs to the technical field of building design, and particularly relates to a method for assembling a strip-shaped curved building skin by using a linear profile.
Background
In some building design types, such as temporary exhibition buildings or ornamental buildings, in order to improve ornamental and overall visual effects, the building skin is not a single upright type, but a strip-shaped curved surface with high modeling sense and artistry is adopted, the strip-shaped curved surface is ribbon-shaped and consists of an upper boundary line, a lower boundary line and two side edges, the upper boundary line is close to the lower boundary line in length, the strip-shaped curved surface extends along the length direction and consists of a plurality of sections of curved surfaces with different curvatures, the strip-shaped curved surface can be generated through model software, and the strip-shaped curved surface is much more complicated than the conventional single plane or cambered surface in shape. At present, the design of the curved building skin has limitation, even if a strip-shaped curved surface can be modeled in a computer, the actual surface area is large, and even if the surface area can be covered by an elastic integrally-formed skin material, the surface area has the problem of weak durability or poor visual smoothness and attractiveness, and a unit body which is easy to produce in batches and has strong durability needs to be searched for and spliced together in a specific mode. In the prior art, linear sectional materials are commonly used for splicing to form a planar building skin, but how to adopt the linear sectional materials to splice the strip-shaped curved surface building skin with high quality is a technical problem to be solved; after determining how to shape a strip-shaped curved building skin, how to fix the curved building skin is also a technical problem to be solved.
Disclosure of Invention
The invention aims to provide a method for assembling a strip-shaped curved surface building skin by using a linear profile, which adopts the profile to assemble and form the strip-shaped curved surface building skin.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a method for assembling a strip-shaped curved building skin by using a linear profile comprises the following steps:
in the XYZ space coordinate system, a middle branching line is formed in the middle of the strip-shaped curved surface according to the upper boundary line and the lower boundary line of the strip-shaped curved surface;
the middle branching line is projected on an XY plane to obtain a middle branching projection line, the length of the middle branching projection line is calculated to be L, the width of the sectional materials is set to be w, the gap between the sectional materials is set to be s, the interval between the axial lines of the sectional materials is set to be w+s, the strip-shaped curved surface can be divided into N parts by the sectional materials, and N=L/(w+s), wherein N is rounded upwards;
n equally dividing projection lines, adding N+1 equally dividing points shared by the starting point and the dead point of the equally dividing projection lines, respectively making a normal plane of the equally dividing projection lines at the equally dividing points, intersecting an upper boundary line, a lower boundary line and a middle dividing line on the normal plane, and respectively obtaining N+1 dividing points on the upper boundary line, the lower boundary line and the middle dividing line;
correspondingly connecting and determining N+1 cutting points on the upper boundary line and the lower boundary line to obtain N+1 section bar axes, and taking the middle point of each axis as a normal plane of the axis, wherein the plane is a sagging plane of the axis;
a first dividing point passing through the middle dividing line is made into a plane parallel to a middle vertical plane of the first axis on an XYZ space coordinate system, a tangent line of the middle dividing line is made into the first dividing point passing through the middle dividing line on the plane, the tangent line of the first dividing point of the middle dividing line is projected on the middle vertical plane, and a line obtained by projection is the long side direction of the first section bar;
and the same is repeated, so that the long-side direction of the n+1 sections is obtained, the long-side direction and the axis of the sections are determined, a series of continuously-changed sections can be formed into a building skin by arranging in an XYZ space coordinate system, and the visual effect of the strip-shaped curved surface is simulated.
Optionally, the middle branching is made by the steps of:
n-1 equal dividing points are respectively obtained on the upper boundary line and the lower boundary line of the strip-shaped curved surface, n+1 equal dividing points are respectively obtained on the upper boundary line and the lower boundary line and are added with respective starting points and dead points, n+1 connecting lines are correspondingly obtained by connecting the n+1 equal dividing points on the upper boundary line and the lower boundary line, the midpoints of the n+1 connecting lines are obtained, the n+1 midpoints are connected into a spline curve, and the spline curve is projected on the strip-shaped curved surface along the Y-axis direction to generate a strip-shaped curved surface middle branching line.
Optionally, the strip-shaped curved surface is offset backwards to construct a main body steel structure, and a multi-stage adjusting mechanism is arranged between the main body steel structure and the profile and used for adjusting the position of the profile.
Optionally, from the beginning end to the end of the strip-shaped curved surface, every j sections are a group, the sections can be divided into k groups, the corresponding multistage regulating structure is divided into k groups, the strip-shaped curved surface is a basic control surface, the corresponding basic control surface is divided into k unit basic control surfaces, a multistage regulating mechanism is arranged between the corresponding unit basic control surface and the main steel structure, the multistage regulating mechanism comprises steel beats, keels and sections, the keels are corresponding to and parallel to the unit basic control surface and are used for fixing the sections, the steel beats are of a flat plate structure close to the unit basic control surface, and two sides of the steel beats are respectively connected with the keels and the main steel structure.
Optionally, the thickness of the profile is a, the unit foundation control surface is offset by a+b distance backwards to obtain a keel control surface, wherein b is the adjustable distance between the profile and the keel;
shifting the unit foundation control surface by a distance of a+b+c+d to obtain an initial steel racket control surface, wherein c is the thickness of a keel, and d is the adjustable distance between the keel and the steel racket;
the method comprises the steps that the adduction e distances of the start and stop points of the upper boundary line and the lower boundary line of an initial steel racket control surface are respectively obtained, wherein 2e is the avoiding distance of two adjacent steel racket control surfaces;
connecting the midpoint of the connecting line of the upper two corner points and the midpoint of the connecting line of the lower two corner points of the adduction steel racket control surface to obtain a straight line L1;
taking the midpoint O of the straight line L1 as a normal L2 of the adduction steel racket control surface, and taking the straight line L1 and the normal L2 as a plane F;
a perpendicular L3 perpendicular to the plane F is made through the O point, a plane S can be obtained through the straight line L1 and the perpendicular L3, and a plane W perpendicular to the plane S is made through the perpendicular L3;
the steel racket comprises a vertical rod piece and a transverse rod piece, the axes of the vertical rod piece and the transverse rod piece are made on a plane S, wherein the axes of the vertical rod piece are parallel to a straight line L1, the axes of the transverse rod piece are parallel to a straight line L3, and the contour of the steel racket cannot exceed the projection contour of an adduction steel racket control surface on the plane S;
and the plane W is shifted along the straight line L1 to cut the keel control surface to obtain a keel control line, the keel control line is used for determining the position of the keel, and finally the multi-stage regulation and control design from the main steel structure to the steel claps, the keels and the sectional materials is completed.
Compared with the prior art, the method for designing the strip-shaped curved surface has the advantages that the geometric information analysis is carried out on the strip-shaped curved surface, the installation position of the section bar can be determined, the section bars with different lengths are adopted, the inclination angle and the length of each section bar are adjusted to enable the section bars to be arranged along the strip-shaped curved surface, a series of continuously-changed section bar sequences are formed, the visual effect of the strip-shaped curved surface is simulated, and accordingly the strip-shaped curved surface building skin is formed.
Drawings
FIG. 1 is a schematic drawing of intent projection lines in the XY plane and XZ plane;
FIG. 2 is a schematic diagram of an upper boundary line obtained by intersecting a curved surface I and a curved surface II;
FIG. 3 is a three-dimensional schematic view of a curved surface;
FIG. 4 is a schematic view of a curved surface with four cut curved surfaces;
FIG. 5 is a schematic view of a resulting ribbon-shaped curved surface;
FIG. 6 is a schematic illustration of an intended upper boundary XY-plane projection line and an intended lower boundary XY-plane projection line portion;
FIG. 7 is a schematic diagram of a resulting midbreak line;
FIG. 8 is a schematic illustration of split projection lines in an XY plane;
FIG. 9 is a schematic plan view of a bisecting projection line at a bisecting point;
FIG. 10 is a schematic view of the longitudinal direction of the resulting profile;
FIG. 11 is a schematic view of a strip-shaped curved surface and a main body steel structure;
FIG. 12 is a schematic view of a control surface for generating an adduction steel flapper;
FIG. 13 is a schematic view of a straight line L1;
fig. 14 is a schematic diagram of a plane F generated by the straight line L1 and the straight line L2;
FIG. 15 is a schematic view of the production plane S;
figure 16 is a schematic view of a keel control line;
FIG. 17 is a schematic perspective view of a steel flapper, keel, and profile arrangement;
FIG. 18 is a cross-sectional view of a steel flapper, keel, and profile;
fig. 19 is a schematic view of a profile assembled strip-shaped curved building skin.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be understood that the depicted embodiments are some, but not all, embodiments of the present invention. The specific embodiments described herein are to be considered in an illustrative rather than a restrictive sense. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
The invention provides a method for assembling a strip-shaped curved surface building skin by using a linear profile, which comprises the following steps:
firstly, generating a strip-shaped curved surface:
as shown in fig. 1, drawing an intended upper boundary XY plane projection line and an intended lower boundary XY plane projection line of the strip-shaped curved surface on an XY plane, wherein the intended upper boundary XY plane projection line and the intended lower boundary XY plane projection line extend along the X direction and fluctuate in the Y direction, and the intended upper boundary XY plane projection line and the intended lower boundary XY plane projection line are adjacently arranged and can intersect; drawing an intention upper boundary XZ plane projection line and an intention lower boundary XZ plane projection line of the strip-shaped curved surface on an XZ plane, wherein the intention upper boundary XZ plane projection line and the intention lower boundary XZ plane projection line extend along the X direction and fluctuate in the Z direction; drawing appearance characteristics conforming to the strip-shaped curved surface through the intended upper boundary XY plane projection line, the intended lower boundary XY plane projection line, the intended upper boundary XZ plane projection line and the intended lower boundary XZ plane projection line, thereby determining the contour of the strip-shaped curved surface;
as shown in fig. 2, extruding the projection line of the XY plane of the upper boundary in the Z direction to form a first curved surface, extruding the projection line of the XZ plane of the upper boundary in the Y direction to form a second curved surface, and intersecting the first curved surface to obtain an upper boundary line of the strip-shaped curved surface;
as shown in fig. 3, directly lofting the projection line of the XY plane of the upper boundary line and the lower boundary of the intention to obtain a curved surface III;
as shown in fig. 4 and 5, the projection line of the intended lower boundary XZ plane is extruded into a fourth curved surface along the Y direction, and the fourth curved surface is cut from the lower section of the third curved surface, so as to finally generate a strip-shaped curved surface.
In addition to the above-described method of producing a strip-shaped curved surface, the strip-shaped curved surface may be produced by producing a first curved surface intersection surface to obtain an upper boundary line of the strip-shaped curved surface, extruding an intended lower boundary XY plane projection line in the Z direction to produce a fifth curved surface, extruding an intended lower boundary XZ plane projection line in the Y direction to produce a sixth curved surface, producing a lower boundary line of the strip-shaped curved surface by extruding the upper boundary line and the lower boundary line directly, and producing a strip-shaped curved surface by lofting the upper boundary line and the lower boundary line.
As shown in fig. 6, the intended upper-boundary XY plane projection line and the intended lower-boundary XY plane projection line are each composed of a plurality of arc segments or a plurality of straight line segments, the total number of the arc segments and the straight line segments of the two are the same, wherein the straight line segments are not continuously arranged, the adjacent two arc segments are tangentially arranged, the adjacent arc segments and the straight line segments are tangentially arranged, the intersection point of the adjacent two arc segments is a cutting point, the intersection point of the adjacent arc segments and the straight line segments is also a cutting point, and the purpose of the arrangement is that the inflection points of the intended upper-boundary XY plane projection line and the intended lower-boundary XY plane projection line do not appear, if the inflection points appear, the inflection points are unfavorable for generating smooth and smooth curved surfaces, and the intended upper-boundary XZ plane projection line and the intended lower-boundary XZ plane projection line can be drawn according to the description above; the normal line of the tangent point of the projection line of the XY plane of the upper boundary is intersected with the tangent point of the projection line of the XY plane of the lower boundary, or the normal line of the tangent point of the projection line of the XY plane of the lower boundary is intersected with the tangent point of the projection line of the XY plane of the upper boundary, so that each section of the projection line of the XZ plane of the upper boundary and each section of the projection line of the XZ plane of the lower boundary can be corresponding, the strip-shaped curved surface can be intercepted by any horizontal plane, and the obtained curved surface is approximate to an arc, which is beneficial to the subsequent profile arrangement.
The axis and the long side direction of the profile are then determined in the strip-shaped curved surface:
as shown in fig. 7, in the XYZ space coordinate system, the strip-shaped curved surface extends with the X direction as the length direction, the strip-shaped curved surface fluctuates in the Y direction, the strip-shaped curved surface extends with the Z direction as the height direction, and a middle branching line is formed in the middle of the strip-shaped curved surface according to the upper boundary line and the lower boundary line of the strip-shaped curved surface; dividing the upper boundary line and the lower boundary line of the strip-shaped curved surface by n equal parts respectively, obtaining n-1 equal parts respectively on the upper boundary line and the lower boundary line, adding n+1 equal parts respectively on the starting point and the dead point respectively, correspondingly connecting the n+1 equal parts on the upper boundary line and the lower boundary line to obtain n+1 connecting lines, obtaining the midpoints of the n+1 connecting lines, connecting the n+1 midpoints into a spline curve, and projecting the spline curve on the strip-shaped curved surface along the Y-axis direction to generate a strip-shaped curved surface center line, wherein the center line is a continuous space curve;
as shown in fig. 8, the middle branching line is projected on the XY plane to obtain a middle branching projection line, the length of the middle branching projection line is calculated to be L, the width of the profile is set to be w, the interval between the profile axes is set to be w+s, the strip-shaped curved surface can be divided into N parts by the profile, n=l/(w+s), wherein N is rounded upwards, i.e. if the obtained N value is 100.5, N is taken as 101, and if the effect of the building epidermis formed by the profile is more similar to that of the strip-shaped curved surface, the corresponding w value and s value are lower than the L value, so that the N value is higher;
as shown in fig. 9, N bisecting projection lines, adding n+1 bisecting points to the starting point and the dead point of the bisecting projection lines, and making normal planes of the bisecting projection lines at the bisecting points, respectively, wherein the normal planes intersect with an upper boundary line, a lower boundary line and a bisecting line, and n+1 bisecting points are respectively obtained on the upper boundary line, the lower boundary line and the bisecting line; the situation that the normal planes at the two ends of the middle projection line cannot intersect with the upper boundary line and the lower boundary line may occur, and at this time, the two ends of the upper boundary line and the lower boundary line are correspondingly extended along, so that the normal planes at the two ends can be ensured to intersect with the upper boundary line and the lower boundary line to obtain the cutting point;
correspondingly connecting and determining the axes of the profile by N+1 cutting points on the upper boundary line and the lower boundary line to obtain N+1 profile axes, dividing the strip-shaped curved surface to obtain the position of the axis of the profile, and taking the midpoint of each axis as the normal plane of the axis, wherein the plane is the sagging plane of the axis;
as shown in fig. 10, a plane parallel to the middle vertical plane of the first axis is made on the first split point of the middle split line on the XYZ space coordinate system, and a tangent line of the middle split line is made on the plane through the first split point of the middle split line, so that the tangent line of the first split point of the middle split line is projected on the middle vertical plane, and a line obtained by projection is the long side direction of the first section bar;
as shown in fig. 19, the long-side directions of n+1 sections are obtained by analogy, and the inclination angles of the sections in the XYZ space coordinate system are determined in such a way that the sections are as close to the strip-shaped curved surface arrangement as possible, and the long-side directions and the axes of the sections are determined to be arranged in the XYZ space coordinate system to generate a series of continuously-changed sections to form a building skin, so that the visual effect of the strip-shaped curved surface is simulated.
In some embodiments, as shown in fig. 11, the strip-shaped curved surface is offset backwards to build a main body steel structure, and a multi-stage adjusting mechanism is arranged between the main body steel structure and the profile and used for adjusting the position of the profile. The inclination angles of all the sections are inconsistent, so that a fixing mechanism is required to be arranged for arranging the sections in actual construction, the installation and the position adjustment of the sections can be realized by arranging a multi-stage adjusting mechanism, a main steel structure is taken as a building foundation, and then the multi-stage adjusting mechanism is arranged to finally realize the multi-stage adjusting arrangement of a series of continuously-changed sections.
Further, from the beginning end to the tail end of the strip-shaped curved surface, every j sections are in one group, the sections can be divided into k groups, the corresponding multistage adjusting structure is divided into k groups, the strip-shaped curved surface is taken as a basic control surface, the corresponding basic control surface is divided into k unit basic control surfaces, a multistage adjusting mechanism is arranged between the corresponding basic control surface of each unit and the main steel structure, the multistage adjusting mechanism comprises steel beats, keels and sections, the keels are correspondingly parallel to the basic control surface of each unit and are used for fixing the sections, the steel beats are of a flat plate structure close to the basic control surface of each unit, and two sides of each steel beat are respectively connected with the keels and the main steel structure. Firstly, fixing the profile on the keels through the connecting pieces, enabling the keels to be parallel to the foundation control surface so as to maximally conform to the position change among the profiles, then fixing the keels on the steel beats through the connecting pieces, simplifying the steel beats into a flat plate structure so as to reduce the processing and field positioning difficulty, finally fixing the steel beats on the main steel structure through the connecting pieces, and installing the profile in groups, wherein the profile is arranged close to a strip-shaped curved surface by adjusting the connecting pieces, the keels and the steel beats.
Further, the thickness of the profile is a, the unit foundation control surface is offset backwards by a distance of a+b to obtain a keel control surface, wherein b is the adjustable distance between the profile and the keel;
shifting the unit foundation control surface by a distance of a+b+c+d to obtain an initial steel racket control surface, wherein c is the thickness of a keel, and d is the adjustable distance between the keel and the steel racket;
as shown in fig. 12, the adduction distances of the start and stop points of the upper boundary line and the lower boundary line of the initial steel racket control surface are respectively obtained, wherein 2e is the avoiding distance of two adjacent steel racket; the whole outline of the steel racket is close to the control surface of the initial steel racket, and the aim of the adduction e distance is that two adjacent steel racket can interfere when actually installed, so that the two sides of the whole outline of the steel racket are correspondingly contracted inwards;
as shown in fig. 13, a straight line L1 is obtained by connecting the midpoint of the upper two corner points connecting line and the midpoint of the lower two corner points connecting line of the adduction steel racket control surface;
as shown in fig. 14, a normal line L2 passing through a midpoint O of a straight line L1 is taken as a normal line L2 of the adduction flapper control surface, and a plane F is taken as a plane F passing through the straight line L1 and the normal line L2;
as shown in fig. 15, when the perpendicular L3 perpendicular to the plane F is made at the O-point, the plane S can be obtained by the straight line L1 and the perpendicular L3, and the plane W perpendicular to the plane S is made at the perpendicular L3;
as shown in fig. 16, 17 and 18, the racket includes a vertical bar member and a horizontal bar member, the axis of the vertical bar member and the axis of the horizontal bar member are made on the plane S, wherein the axis of the vertical bar member is parallel to the straight line L1, the axis of the horizontal bar member is parallel to the straight line L3, and the profile of the racket does not exceed the projected profile of the adduction racket control surface on the plane S; the plane S is a control surface which is nearly parallel to the basic control surface of the unit, because the manufacturing is extremely complex when the steel racket is actually manufactured into a curved surface, the steel racket can only be in a state nearly parallel to the basic control surface of the unit as far as possible, after the plane S is determined, the profile of the steel racket is determined by combining the adduction steel racket control surface, the keel is installed again by taking the profile as a reference, and then the profile is fixed according to a set inclination angle;
the plane W is shifted along the straight line L1 to cut the keel control surface to obtain a keel control line, the keel control line is used for determining the position of the keel, and finally the multi-stage regulation and control design from the main steel structure to the steel claps, the keels and the sectional materials is completed; the keels can be arranged in the height direction of the steel racket, so that the upper side face and the lower side face of the keels are enabled to be flush with the upper side face and the lower side face of the transverse rod piece of the steel racket, and the keels and the steel racket are connected through the connecting piece conveniently. The shape and the size of the main steel structure, the steel beats and the keels and the position of the steel beats and the keels in the XYZ space coordinate system are fitted through the steps, so that reference is provided for subsequent construction, the sectional materials are convenient to fix, and the speed of assembling the strip-shaped curved surface building skin by the sectional materials is accelerated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A method for assembling a strip-shaped curved surface building skin by using a linear profile is characterized by comprising the following steps: the method comprises the following steps:
in the XYZ space coordinate system, a middle branching line is formed in the middle of the strip-shaped curved surface according to the upper boundary line and the lower boundary line of the strip-shaped curved surface;
the middle branching line is projected on an XY plane to obtain a middle branching projection line, the length of the middle branching projection line is calculated to be L, the width of the sectional materials is set to be w, the gap between the sectional materials is set to be s, the distance between the axial lines of the sectional materials is set to be w+s, the strip-shaped curved surface is divided into N parts by the sectional materials, and N=L/(w+s), wherein N is rounded upwards;
n equally dividing projection lines, adding N+1 equally dividing points shared by the starting point and the dead point of the equally dividing projection lines, respectively making a normal plane of the equally dividing projection lines at the equally dividing points, intersecting an upper boundary line, a lower boundary line and a middle dividing line on the normal plane, and respectively obtaining N+1 dividing points on the upper boundary line, the lower boundary line and the middle dividing line;
correspondingly connecting and determining N+1 cutting points on the upper boundary line and the lower boundary line to obtain N+1 section bar axes, and taking the middle point of each axis as a normal plane of the axis, wherein the plane is a sagging plane of the axis;
a first dividing point passing through the middle dividing line is made into a plane parallel to a middle vertical plane of the first axis on an XYZ space coordinate system, a tangent line of the middle dividing line is made into the first dividing point passing through the middle dividing line on the plane, the tangent line of the first dividing point of the middle dividing line is projected on the middle vertical plane, and a line obtained by projection is the long side direction of the first section bar;
and the same is repeated, so that the long-side directions of the n+1 sections are obtained, the long-side directions and the axes of the sections are determined, a series of continuously-changed sections can be generated by arranging in an XYZ space coordinate system, and the visual effect of the strip-shaped curved surface is simulated.
2. The method for assembling a strip-shaped curved building skin by using a linear profile according to claim 1, wherein: the middle branching is made by the following steps:
n-1 equal dividing points are respectively obtained on the upper boundary line and the lower boundary line of the strip-shaped curved surface, n+1 equal dividing points are respectively obtained on the upper boundary line and the lower boundary line and are added with respective starting points and dead points, n+1 connecting lines are correspondingly obtained by connecting the n+1 equal dividing points on the upper boundary line and the lower boundary line, the midpoints of the n+1 connecting lines are obtained, the n+1 midpoints are connected into a spline curve, and the spline curve is projected on the strip-shaped curved surface along the Y-axis direction to generate a strip-shaped curved surface middle branching line.
3. The method for assembling a strip-shaped curved building skin by using a linear profile according to claim 1, wherein: the strip-shaped curved surface is backwards offset to construct a main body steel structure, and a multi-stage adjusting mechanism is arranged between the main body steel structure and the profile and used for adjusting the position of the profile.
4. A method for assembling a strip-shaped curved building skin using straight profiles according to claim 3, wherein: from the beginning end to the tail end of the strip-shaped curved surface, every j sections are in a group, the sections are divided into k groups, the corresponding multistage regulating structure is divided into k groups, the strip-shaped curved surface is taken as a basic control surface, the corresponding basic control surface is divided into k unit basic control surfaces, a multistage regulating mechanism is arranged between the corresponding unit basic control surface and the main steel structure, the multistage regulating mechanism comprises steel beats, keels and sections, the keels are correspondingly parallel to the unit basic control surface and are used for fixing the sections, the steel beats are of a flat plate structure close to the unit basic control surface, and two sides of the steel beats are respectively connected with the keels and the main steel structure.
5. The method for assembling the strip-shaped curved building skin by using the linear profile according to claim 4, wherein: the thickness of the section bar is a, the unit foundation control surface is backwards offset by a distance of a+b to obtain a keel control surface, wherein b is the adjustable distance between the section bar and the keel;
shifting the unit foundation control surface by a distance of a+b+c+d to obtain an initial steel racket control surface, wherein c is the thickness of a keel, and d is the adjustable distance between the keel and the steel racket;
the method comprises the steps that the adduction e distances of the start and stop points of the upper boundary line and the lower boundary line of an initial steel racket control surface are respectively obtained, wherein 2e is the avoiding distance of two adjacent steel racket control surfaces;
connecting the midpoint of the connecting line of the upper two corner points and the midpoint of the connecting line of the lower two corner points of the adduction steel racket control surface to obtain a straight line L1;
taking the midpoint O of the straight line L1 as a normal L2 of the adduction steel racket control surface, and taking the straight line L1 and the normal L2 as a plane F;
a perpendicular L3 perpendicular to the plane F is made through the O point, a plane S is obtained through the straight line L1 and the perpendicular L3, and a plane W perpendicular to the plane S is made through the perpendicular L3;
the steel racket comprises a vertical rod piece and a transverse rod piece, the axes of the vertical rod piece and the transverse rod piece are made on a plane S, wherein the axes of the vertical rod piece are parallel to a straight line L1, the axes of the transverse rod piece are parallel to a straight line L3, and the contour of the steel racket cannot exceed the projection contour of an adduction steel racket control surface on the plane S;
and the plane W is shifted along the straight line L1 to cut the keel control surface to obtain a keel control line, the keel control line is used for determining the position of the keel, and finally the multi-stage regulation and control design from the main steel structure to the steel claps, the keels and the sectional materials is completed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010242169.3A CN111414662B (en) | 2020-03-31 | 2020-03-31 | Method for assembling strip-shaped curved surface building skin by using linear profile |
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