CN106193449A - A kind of preparation method of variable cross-section Honeycomb Beam web - Google Patents
A kind of preparation method of variable cross-section Honeycomb Beam web Download PDFInfo
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- CN106193449A CN106193449A CN201610575865.XA CN201610575865A CN106193449A CN 106193449 A CN106193449 A CN 106193449A CN 201610575865 A CN201610575865 A CN 201610575865A CN 106193449 A CN106193449 A CN 106193449A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
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Abstract
The invention discloses the preparation method of a kind of variable cross-section Honeycomb Beam web, calculated circular hole size and the position of opening of pre-prepared Honeycomb Beam web by H profile steel variable cross-section steel flanged beam web.Web to be opened is marked and determines and expand the parallel lines of high ratio and the home position of variable cross-section circular hole and radius draws semicircle, make half-round curve.Again lath is become two blocks of semicircle waveform steel plates by curvilinear cut, by upper and lower two block plate dislocation circular hole docking, be welded into the web to be prepared meeting design size.The present invention can be greatly improved raw-material utilization rate, makes wide scope, and technique is simple to operation.Substantially increase the production efficiency of variable cross-section Honeycomb Beam web, the particularly waste material of perforate generation few, save steel, reduce production cost, the shrinkage pool part continuous sequence that can the cutting of multiple H beams and pruning be obtained, improves process velocity.
Description
Technical field
The present invention relates to the preparation method of construction steel structure field a kind of variable cross-section Honeycomb Beam web.
Background technology
Girder steel is one of load-carrying member main in structural steelwork.The difference of beam both sides stress size determines web and adopts
By the form of variable cross-section.Meanwhile, generally depth of beam is made bigger to improve the bending resistance the moment of inertia of beam.At this moment, web is past
Toward the effect that can not give full play to steel.Therefore, can be while not affecting bearing capacity by appropriate for variable cross-section web perforate
Reduce steel using amount, have preferable techno-economic effect.Perforate simultaneously can be used as the passage that various pipeline passes through, and is conducive to improving knot
Space service efficiency within structure.
The perforate H profile steel beam produced at present both at home and abroad and use, most uiform section hexagon and round holes of all using
Honeycomb Beam web.The production technology of this beam is fairly simple, and the moment of flexure shearing diverse location being subject to due to beam column is different, adopts
Can be more reasonable with the web of variable cross-section.Therefore variable cross-section Honeycomb Beam web application prospect does not extensively the most make foundation, research
Only rest on the uiform section web stage.Owing to variable cross-section open-celled theory is not yet studied, production unit cannot produce variable cross-section honeycomb
Web.
Summary of the invention
The technical problem to be solved in the present invention is to provide the preparation method of a kind of variable cross-section Honeycomb Beam web, and the method is significantly
Improve the production efficiency of variable cross-section Honeycomb Beam web, the waste material that perforate produces is few, saves steel, reduces production cost.
In order to solve the problem that prior art exists, the technical solution used in the present invention is:
The preparation method of a kind of variable cross-section Honeycomb Beam web, comprises the following steps:
(1) select and variable cross-section steel flanged beam same size and the pre-prepared web of material, according to variable cross-section steel flanged beam web
Both sides height h1 and h2 and edge of a wing length L try to achieve first circle hole radius R1 of circular hole web to be prepared；
(2) distance m of pre-prepared web circular hole and web lower edges and s and pre-prepared web adjacent circular holes are set
Outward flange spacing a, wherein: web inclination angle 2 θ is tried to achieve by formula:
M and s meets relation
(3) the radius R of pre-prepared variable cross-section web circular hole is tried to achieve by conditions aboven, on the basis of steel flanged beam web
Perforate is pre-prepared web；Connected by the variable cross-section circular hole uppermost edge produced after ensureing the dislocation welding of half-round curve lath
Radius can be tried to achieve, wherein in the straight line parallel top flange become:
R1 is tried to achieve by formula:
Rn is tried to achieve by formula:
(4) converted respectively by prefabricated web two ends variable cross-section height h1, h2 and obtain the height of web two ends to be opened variable cross-section
H1 ' and h2 '；And determine two boundary line spacing n and the shortest spacing b thereof of web to be opened；Wherein: n and b should meet b=ncos θ；
(5) connected with web relatively low height side by making a straight line being parallel to top flange at m away from top flange height
The intersection point become is as the starting point of n1, and is the half i.e. θ with web inclination angle to be prepared by this point and makes boundary line n1, exists simultaneously
The boundary line n2 that distance n1 is n=R1-sin (a+R1) and parallel n1 is made at a less coxostermum h1'；
(6) respectively at upper and lower two boundary line n1, n2 is upper marks adjacent two circle outward flanges according to a, R1, a, R2.....
Between distance be a and the variable cross-section circular hole center of circle draw semicircle.And describe the half-round curve of correspondence；Wherein half-round curve
Starting point, on the circumference that another radius is R1, forms upper and lower two half-round curve；
(7) the shrinkage pool part containing semi-cylindrical canyon is obtained, on an other limit along two half-round curve cutting webs
The trim lines of the sets of line segments composition of half-round curve in boundary line and and homonymy parallel with this boundary line obtains containing semi-cylindrical canyon
Shrinkage pool part；
(8) mode that the shrinkage pool part of lath up and down is relative according to semi-cylindrical canyon, sets of line segments is relative that step (7) is obtained
Welding；Variable cross-section Circular-hole Castellated Beams web to be made described in.
Described the be linked to be straight line in the variable cross-section Honeycomb Beam web circular hole center of circle on the same line and adjacent two circle ragged edges
Intermarginal away from identical.
Inclination angle 2 θ of described variable cross-section Honeycomb Beam web be less than 90 °, θ ＜ 45 °, and the center of circle on the same line with upper limb
Edge angle is θ.
Described variable cross-section Honeycomb Beam web all circular holes top edge place tangent line on the same line and is parallel to upper limb
Edge, lower limb place tangent line on the same line and is parallel to lower flange, and the straight line that the upper and lower tangent line of all circles is linked to be is about circle
Heart place straight line is symmetrical.
Advantage for present invention with effect is:
The method of the present invention breach tradition variable cross-section steel flanged beam cannot the bottleneck of perforate, by H profile steel variable cross-section reality abdomen
Formula web calculates circular hole size and the position of opening of pre-prepared Honeycomb Beam web.Web to be opened is marked and determines that the high ratio of expansion is put down
Line and the home position of variable cross-section circular hole and radius draw semicircle, make half-round curve.Again lath is become two by curvilinear cut
Block semicircle waveform steel plate, by upper and lower two block plate dislocation circular hole docking, is welded into the web to be prepared meeting design size.With
Prior art is compared, and raw material all uses steel plate to make, and reduces the material that directly perforate brings on variable cross-section web
Loss.Also break the restriction using finished product H profile steel to carry out making honeycomb non-uniform beam web specification, thus avoid tradition work
Skill restriction to specification requirement when purchasing rolled h-section steel beam, it is possible to be greatly improved raw-material utilization rate, makes wide scope,
Technique is simple to operation.Substantially increase the production efficiency of variable cross-section Honeycomb Beam web, the particularly waste material of perforate generation few, joint
Having saved steel, reduced production cost, the shrinkage pool part continuous sequence that can the cutting of multiple H beams and pruning be obtained, raising adds
Work speed.
Accompanying drawing explanation
Fig. 1 is the structural representation of variable cross-section steel flanged beam web；
Fig. 2 is to be intended to web with openings to determine the schematic diagram of parallel lines n1, n2 of expanding high ratio；
Fig. 3 is to be intended to web with openings by the flange portion shrinkage pool part obtained after curvilinear cut and trim lines schematic diagram；
Fig. 4 is the schematic diagram of the pre-prepared web obtained after dislocation is welded mutually.
Detailed description of the invention
The preparation method of a kind of variable cross-section Honeycomb Beam web, comprises the following steps: the present embodiment is with variable cross-section circular hole honeycomb
As a example by beam, variable cross-section web is made up of upper and lower two semicircular curve lath.
(1) as it is shown in figure 1, select and variable cross-section steel flanged beam same size and the pre-prepared web of material, real according to variable cross-section
Abdomen formula web both sides height h1 and h2 and edge of a wing length L try to achieve first circle hole radius of circular hole web to be prepared
R1。
As in figure 2 it is shown, artificially arrange distance m of rational pre-prepared web circular hole and web lower edges and s and
Pre-prepared web adjacent circular holes outermost edge spacing a.Wherein:
Web inclination angle 2 θ can be tried to achieve by formula:
M and s should meet relation
(3) the radius R of pre-prepared variable cross-section web circular hole can be tried to achieve by conditions aboven, on the basis of steel flanged beam web
Perforate is pre-prepared web.Connected by the variable cross-section circular hole uppermost edge produced after ensureing the dislocation welding of half-round curve lath
Radius can be tried to achieve, wherein in the straight line parallel top flange become:
R1 can be tried to achieve by formula:
Rn can be tried to achieve by formula:
(4) as it is shown on figure 3, can be converted respectively by prefabricated web two ends variable cross-section height h1, h2 and obtain web two ends to be opened and become
The height h1 ' in cross section and h2 '.And determine two boundary line spacing n and the shortest spacing b thereof of web to be opened.Wherein: n and b should meet
B=ncos θ.
The honeycomb non-uniform beam web to be made is had and requires as follows:
1. can accurately dock for two blocks of half-round curve laths after ensureing dislocation perforate, the web circular hole center of circle to be made is connected
Be in line must on the same line and adjacent two circles outermost edge spacing is identical is set to a.
Inclination angle 2 θ of variable cross-section Circular-hole Castellated Beams web to be made should be less than 90 ° i.e. θ ＜ 45 °, and the center of circle is with always
It is θ with top flange angle on line.
The most all circular hole top edge places tangent line on the same line and is parallel to top flange, and lower limb place tangent line is same
On one straight line and be parallel to lower flange, and the straight line that the upper and lower tangent line of all circles is linked to be is symmetrical about place, center of circle straight line.
Select and pre-prepared Honeycomb Beam web same shape and the web of slope, and the height of the less side of variable cross-section web
The height h2 ' of the less side of variable cross-section web in degree h1' and hole to be made meets h1'=h1-b/cos θ, h2'=h2-b/cos
θ, wherein, h1, h2 represent web variable cross-section both sides to be prepared height respectively.
(5) it is being linked to be with web relatively low height side by making a straight line being parallel to top flange at m away from top flange height
Intersection point as the starting point of n1, and be the half i.e. θ with web inclination angle to be prepared by this point and make boundary line n1, simultaneously relatively
The boundary line n2 that distance n1 is n=R1-sin (a+R1) and parallel n1 is made at a little coxostermum h1'.
(6) on upper and lower two boundary lines n1, n2, adjacent two circle outward flanges are marked according to a, R1, a, R2..... respectively
Between distance be a and the variable cross-section circular hole center of circle draw semicircle.And describe the half-round curve of correspondence.Wherein half-round curve
Starting point, on the circumference that another radius is R1, forms upper and lower two half-round curve.
(7) the shrinkage pool part containing semi-cylindrical canyon is obtained, on an other limit along two half-round curve cutting webs
The trim lines of the sets of line segments composition of half-round curve in boundary line and and homonymy parallel with this boundary line is repaiied and is obtained containing semicircle recessed
The shrinkage pool part fallen into.
(8) the shrinkage pool part of lath up and down as shown in Figure 4, step (7) obtained is relative according to semi-cylindrical canyon, sets of line segments
Relative mode is welded.Variable cross-section Circular-hole Castellated Beams web to be made described in.
Wherein, when selecting to be intended to perforate variable cross-section H web, it is considered as following factor:
1. from being intended to web with openings geometrical relationship it can be seen that spacing b of n1 and n2 should eligible b ＜ Rn, edge is minimum
Spacing a should meet a ＜ 2R1, and b=ncos θ.
2. it is that the top edge meeting all circles is less than the edge of a wing, relational expression m+n ＞ R1-(a+R1) sin θ should be met.
Above, the preferred embodiment of patent the most of the present invention, but the protection domain of patent of the present invention is not limited thereto, and appoints
What those familiar with the art in the technical scope of patent diselosesll of the present invention, the change that can readily occur in or replace
Change, all should contain within the protection domain of patent of the present invention.Therefore, the protection domain of patent of the present invention should be with claim
The protection domain defined is as the criterion.
Claims (4)
1. the preparation method of a variable cross-section Honeycomb Beam web, it is characterised in that comprise the following steps:
(1) select and variable cross-section steel flanged beam same size and the pre-prepared web of material, according to variable cross-section steel flanged beam web both sides
Highly h1 and h2 and edge of a wing length L try to achieve first circle hole radius R1 of circular hole web to be prepared；
(2) pre-prepared web circular hole and distance m of web lower edges and s and pre-prepared web adjacent circular holes ragged edge are set
Intermarginal away from a, wherein:
Web inclination angle 2 θ is tried to achieve by formula:
M and s meets relation
(3) the radius R of pre-prepared variable cross-section web circular hole is tried to achieve by conditions aboven, on the basis of steel flanged beam web, perforate is i.e.
For pre-prepared web；Straight by ensureing that the variable cross-section circular hole uppermost edge that the dislocation of half-round curve lath produces after welding is linked to be
Radius can be tried to achieve in the parallel top flange of line, wherein:
R1 is tried to achieve by formula:
Rn is tried to achieve by formula:
(4) converted respectively by prefabricated web two ends variable cross-section height h1, h2 obtain web two ends to be opened variable cross-section height h1 ' and
h2’；And determine two boundary line spacing n and the shortest spacing b thereof of web to be opened；Wherein: n and b should meet b=ncos θ；
(5) at away from top flange height by m, make what a straight line being parallel to top flange and web were linked to be compared with low height side
Intersection point is as the starting point of n1, and is the half i.e. θ with web inclination angle to be prepared by this point and makes boundary line n1, simultaneously less
The boundary line n2 that distance n1 is n=R1-sin (a+R1) and parallel n1 is made at one coxostermum h1'；
(6) respectively at upper and lower two boundary line n1, n2 is upper to be marked between adjacent two circle outward flanges according to a, R1, a, R2.....
Distance be a and the variable cross-section circular hole center of circle draw semicircle.And describe the half-round curve of correspondence；The wherein starting point of a half-round curve
On the circumference that another radius is R1, form upper and lower two half-round curve；
(7) the shrinkage pool part containing semi-cylindrical canyon is obtained, in an other boundary line along two half-round curve cutting webs
On half-round curve and the trim lines of sets of line segments composition of and homonymy parallel with this boundary line obtain containing semi-cylindrical canyon recessed
Bore portion；
(8) the shrinkage pool part of the lath up and down mode relative according to semi-cylindrical canyon, that sets of line segments is relative step (7) obtained is welded
Connect；Obtain variable cross-section Circular-hole Castellated Beams web.
The preparation method of a kind of variable cross-section Honeycomb Beam web the most according to claim 1, it is characterised in that described change cuts
The be linked to be straight line in the Honeycomb Beam web circular hole center of circle, face is on the same line and adjacent two circle outermost edge spacing are identical.
The preparation method of a kind of variable cross-section Honeycomb Beam web the most according to claim 1, it is characterised in that described change cuts
Inclination angle 2 θ of face Honeycomb Beam web is less than 90 °, θ ＜ 45 °, and the center of circle is θ with top flange angle on the same line.
The preparation method of a kind of variable cross-section Honeycomb Beam web the most according to claim 1, it is characterised in that described change cuts
Honeycomb Beam web all circular holes top edge place, face tangent line on the same line and is parallel to top flange, and lower limb place tangent line exists
On same straight line and be parallel to lower flange, and the straight line that the upper and lower tangent line of all circles is linked to be is symmetrical about place, center of circle straight line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610575865.XA CN106193449A (en) | 2016-07-20 | 2016-07-20 | A kind of preparation method of variable cross-section Honeycomb Beam web |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610575865.XA CN106193449A (en) | 2016-07-20 | 2016-07-20 | A kind of preparation method of variable cross-section Honeycomb Beam web |
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| CN106193449A true CN106193449A (en) | 2016-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691284A (en) * | 2020-07-21 | 2020-09-22 | 中铁宝桥集团有限公司 | Oblate variable cross-section steel pipe arch and manufacturing process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2119731A1 (en) * | 1970-05-06 | 1971-12-09 | MEM Mezögazdasagi Tervezö Vallalat (AGROTERV), Budapest; Mezögep, Mezögazdasagi Gepgyarto es Szolgaltato Vallalat, Szolnok; (Ungarn) | Carrier with a broken web, as well as a method for producing the same |
| US4894898A (en) * | 1988-01-12 | 1990-01-23 | Wescol Structures Limited | Method of making castellated beams |
| DE202006010913U1 (en) * | 2006-07-14 | 2006-10-19 | Tussinger, Philipp | Support arm for canopy, is made in single piece from sheet metal and equipped with folded rebates for support and fastening |
| CN101105065A (en) * | 2007-08-08 | 2008-01-16 | 河南大学 | Method for preparing ellipse-like hole honeycomb web plate |
| CN101225687A (en) * | 2008-01-23 | 2008-07-23 | 哈尔滨工业大学 | Cuneiform honeycomb I-profile component |
| US20090100794A1 (en) * | 2005-05-31 | 2009-04-23 | Westok Limited | Floor construction method and system |
| CN103696534A (en) * | 2013-12-11 | 2014-04-02 | 范国利 | Circular complex-hole steel beam and forming method thereof |
-
2016
- 2016-07-20 CN CN201610575865.XA patent/CN106193449A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2119731A1 (en) * | 1970-05-06 | 1971-12-09 | MEM Mezögazdasagi Tervezö Vallalat (AGROTERV), Budapest; Mezögep, Mezögazdasagi Gepgyarto es Szolgaltato Vallalat, Szolnok; (Ungarn) | Carrier with a broken web, as well as a method for producing the same |
| US4894898A (en) * | 1988-01-12 | 1990-01-23 | Wescol Structures Limited | Method of making castellated beams |
| US20090100794A1 (en) * | 2005-05-31 | 2009-04-23 | Westok Limited | Floor construction method and system |
| DE202006010913U1 (en) * | 2006-07-14 | 2006-10-19 | Tussinger, Philipp | Support arm for canopy, is made in single piece from sheet metal and equipped with folded rebates for support and fastening |
| CN101105065A (en) * | 2007-08-08 | 2008-01-16 | 河南大学 | Method for preparing ellipse-like hole honeycomb web plate |
| CN101225687A (en) * | 2008-01-23 | 2008-07-23 | 哈尔滨工业大学 | Cuneiform honeycomb I-profile component |
| CN103696534A (en) * | 2013-12-11 | 2014-04-02 | 范国利 | Circular complex-hole steel beam and forming method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691284A (en) * | 2020-07-21 | 2020-09-22 | 中铁宝桥集团有限公司 | Oblate variable cross-section steel pipe arch and manufacturing process thereof |
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Application publication date: 20161207 |