CN109680798A - A kind of parallel space truss of large span polygon variable cross-section and construction method - Google Patents
A kind of parallel space truss of large span polygon variable cross-section and construction method Download PDFInfo
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- CN109680798A CN109680798A CN201811503682.2A CN201811503682A CN109680798A CN 109680798 A CN109680798 A CN 109680798A CN 201811503682 A CN201811503682 A CN 201811503682A CN 109680798 A CN109680798 A CN 109680798A
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- mobile jib
- bar
- truss
- lower edge
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
Abstract
A kind of parallel space truss of large span polygon variable cross-section and construction method, wherein truss includes wind up mobile jib and lower edge mobile jib, the main vertical web rod between upper and lower string mobile jib, and the waist bar of upper and lower string mobile jib two sides, the horizontal straight-bar between waist bar;Wherein in upper and lower string mobile jib both side ends truss frame for connecting column, bridging is connected between truss upright-column and adjacent main vertical web rod, connects polygonal frame between truss upright-column and horizontal chord member;Main diagonal web member is connected between adjacent main vertical web rod;Facade brace is connected between upper and lower string mobile jib, waist bar, connects time diagonal web member between facade brace;Upper and lower string mobile jib is long to be separately connected upper and lower string in the same direction time bar to the horizontal two sides in middle part;In construction, truss moulding bed is first installed, then the elongated rod piece in positioning truss gradually carries out the assembly of local rod piece;The present invention can carry out the synchronous construction of entirety and unit, save working hour, and variable cross-section and the effective stress and globality for guaranteeing truss of parallel setting.
Description
Technical field
The invention belongs to steel structure truss field, in particular to the parallel space truss of a kind of large span and construction method.
Background technique
Nowadays, roof system, workshop and warehouse of large span etc. building it is more and more, building span length significantly
While soaring, more stringent requirements are proposed for the space truss designed realization large span.Because space truss, can only by axle power
Its material property is given full play to, in Long Span Roof Structures, the section of truss need to be arranged very greatly for existing truss form use,
Or need to increase prestressed cable in truss, construction procedure is cumbersome;Commonly " inverted triangle " truss construction technology is mainly utilized
The compression of winding up of truss, lower edge tension stress performance, but since the cross-sectional area of " inverted triangle " truss is held essentially constant,
This has resulted in the especially unreasonable in the stress of span centre position in part of truss, and section is constant to uneven superstructure
The sensibility bad adaptability of loads change.Therefore, it is necessary to the size of top-bottom chord and cross section to space truss carry out into
Improving and being transformed for one step, proposes a kind of parallel space truss of the variable cross-section suitable for large span, super-span.
Summary of the invention
The present invention proposes a kind of parallel space truss of large span polygon variable cross-section and construction method, and concrete scheme is such as
Under:
A kind of parallel space truss of large span polygon variable cross-section includes disjoint master that winds up upper and lower in same perpendicular
Bar and lower edge mobile jib, one group of connection parallel interval are distributed in the main vertical web rod to wind up between mobile jib and lower edge mobile jib, are distributed in
Plane two sides where string mobile jib and lower edge mobile jib and it is parallel to each other symmetrically arranged waist bar and one group of parallel interval is connected to
Horizontal straight-bar between two waist bars;Wind up mobile jib and the lower edge mobile jib are symmetrical curved rod, and the main vertical web rod is from both sides
Successively successively decrease to intermediate altitude;Plane where the waist bar is mutually perpendicular to plane where mobile jib and lower edge mobile jib of winding up, described
Horizontal straight-bar is vertical with corresponding main vertical web rod to be connected.
Described wind up is connected with truss upright-column vertically between mobile jib and lower edge mobile jib both side ends, truss upright-column and adjacent master
Bridging is connected between vertical web rod;Truss upright-column vertical connection corresponding with the horizontal straight-bar of waist boom end.
It is connected with main diagonal web member between adjacent main vertical web rod, in the middle part of space truss centered on main vertical web rod, the master of two sides
Diagonal web member is symmetrical arranged, wherein the main diagonal web member on the left of the main vertical web rod in middle part is inclined to left side, the master on the right side of the main vertical web rod in middle part is oblique
Web member tendency right side;The both ends of the main diagonal web member are connected between the upper and lower end parts of adjacent main vertical web rod.
One is connected in turn on same vertical plane between the mobile jib that winds up, waist bar, lower edge mobile jib and another waist bar
Facade brace forms polygon braced frame;It is connected between adjacent facade brace upper and lower end parts in two polygon braced frames
Secondary diagonal web member, the adjacent secondary diagonal web member are symmetrical about the facade brace connected jointly.
The polygon braced frame is divided into two groups, and first group is enclosed in main vertical web rod and horizontal straight-bar periphery, is formed with
Core polygon braced frame, second group is enclosed in vacant position, forms hollow polygon braced frame;First group and second group
The long upward alternate intervals parallelly distribute on of truss.
The horizontal cross brace of horizontal brace composition is connected between second group of hollow polygon braced frame, it is horizontal
The intersection of bridging, which is brought out into the open, connects main vertical web rod and horizontal straight-bar junction.
Wind up mobile jib and the lower edge mobile jib are long to be connected separately in the same direction wind up time bar and lower edge time bar on both sides of the middle;
It is described to wind up time bar and lower edge time bar is to be symmetrical arranged in the middle part of space truss.
Section where the polygon braced frame include wind up mobile jib, lower edge mobile jib, wind up time bar and lower edge time bar, more
Facade brace, which is connected to, in the shape braced frame of side winds up on time bar and lower edge time bar.
Waist bar both ends are connected with horizontal chord member between the end of extension and two waist bars respectively;Horizontal chord member is located at
The outside of end face where truss upright-column, horizontal chord member and horizontal straight-bar in same plane and are parallel to horizontal straight-bar, horizontal chord member
Polygonal frame is provided between the mobile jib that winds up, lower edge mobile jib and waist boom end place plane.
The polygonal frame is hexagon plane frame, is arranged symmetrically about truss upright-column;Polygonal frame passes through waist
Bar is connect with the horizontal straight-bar end on horizontal chord boom end and truss upright-column;On polygonal frame with the top of waist bar junction
Tie point is connected with truss upright-column upper end end by connecting rod, on polygonal frame with the low connection point of waist bar junction and purlin
Column lower end is erected to be connected by connecting rod.
A kind of construction method of parallel space truss of large span polygon variable cross-section, specific steps are as follows:
Step 1: setting up space truss moulding bed, both ends truss upright-column is installed;
Step 2: according to space truss position, location and installation is winded up mobile jib and lower edge mobile jib, then in mobile jib and the lower edge master of winding up
Installation connects wind up time bar and lower edge time bar in the middle part of bar;
Step 3: correction adjustment installation member position, and in the position for marking main vertical web rod on mobile jib and lower edge mobile jib of winding up,
Then main vertical web rod and main diagonal web member are successively installed;
It is connected Step 4: setting up waist bar and installing horizontal straight-bar with main vertical web rod, and waist bar position is accurately positioned and is surveyed
Amount;
Step 5: mounting vertical plane brace, horizontal brace and secondary diagonal web member between the mobile jib that winds up, lower edge mobile jib and waist bar;
Step 6: carrying out after the installation of completion truss main body, repetition measurement and adjustment are carried out to the position of main body truss, and at its both ends
Horizontal chord member is installed on the outside of portion, in horizontal chord member and winds up polygonal frame is set between mobile jib and lower edge mobile jib, and connected with connecting rod
Connect fixation.
The invention has the following advantages:
A kind of parallel space truss of large span polygon variable cross-section provided by the invention and construction method, wherein space truss is adopted
Area of section with variable cross-section design, space truss both ends is big, and intermediate cross-section area is small, to ensure that whole high in building
Spend it is constant in the case where efficiently use interior net storey height, and to the adaptable of superstructure form, to non-uniform roof load
Change insensitive;Wind up in space truss the parallel setting of time bar, lower edge time bar and waist bar, can share wind up mobile jib and under
The top load of string mobile jib, the effective bearing capacity for reinforcing space truss;Main vertical web rod, main diagonal web member, adds horizontal straight-bar
The setting of the strong rod pieces such as rod piece and facade brace can reinforce the globality of space truss, and both ends polygonal frame is set in addition
It sets, the stability of end power transmission can be enhanced.The present invention is the node connection of rod piece, can be according to designing prefabricated spelling when construction
Dress or sub-unit synchronous construction to effectively save the construction time improve construction efficiency.
Detailed description of the invention
Fig. 1 is space truss schematic diagram;
Fig. 2 is reinforcer connecting node schematic diagram;
Fig. 3 is polygonal frame connection schematic diagram.
Appended drawing reference: 1- winds up mobile jib;2- lower edge mobile jib;The main vertical web rod of 3-;4- waist bar;The horizontal straight-bar of 5-;6- truss is vertical
Column;The main diagonal web member of 7-;8- facade brace;9- winds up time bar;10- lower edge time bar;The horizontal brace of 11-;The horizontal chord member of 12-;13- times
Diagonal web member;14- steel-casting;15- polygonal frame;The upper horizon bar of 16-;Horizon bar under 17-;18- brace;19- connecting rod; 20-
Web member;21- reinforcing member.
Specific embodiment
Shown in Figure 1, the rod piece of a kind of parallel space truss of large span polygon variable cross-section, space truss uses steel
Rod piece processed, comprising disjoint wind up mobile jib 1 and lower edge mobile jib 2, one group of connection parallel interval are divided up and down in same perpendicular
Cloth is distributed in 2 place plane two of mobile jib 1 and lower edge mobile jib of winding up in the main vertical web rod 3 between mobile jib 1 and lower edge mobile jib 2 that winds up
Side and it is parallel to each other symmetrically arranged waist bar 4 and one group of parallel interval is connected to horizontal straight-bar 5 between two waist bars 4.
In the present embodiment, wind up mobile jib 1 and lower edge mobile jib 2 are curved steel tube symmetrical above and below, main vertical web rod 3 from both sides to
Intermediate altitude successively successively decreases;4 place plane of waist bar with wind up mobile jib 1 and 2 place plane of lower edge mobile jib is mutually perpendicular to, horizontal straight-bar
5 with the vertical connection of corresponding main vertical web rod 3.
In the present embodiment, truss upright-column 6 is connected between 2 both side ends of mobile jib 1 and lower edge mobile jib of winding up vertically, truss is vertical
Column 6 is rectangular steel tube, is connected with bridging between truss upright-column 6 and adjacent main vertical web rod 3;The water of truss upright-column 6 and 4 end of waist bar
The corresponding vertical connection of straight shank 5.
In the present embodiment, it is connected with main diagonal web member 7 between adjacent main vertical web rod 3, is with vertical web rod 3 main in the middle part of space truss
The main diagonal web member 7 at center, two sides is symmetrical arranged, wherein the main diagonal web member 7 in main 3 left side of vertical web rod in middle part is inclined to left side, middle part master
The main diagonal web member 7 on 3 right side of vertical web rod is inclined to right side;The both ends of the main diagonal web member 7 are connected to the upper of adjacent main vertical web rod 3
Between lower end.
In the present embodiment, between the mobile jib 1 that winds up, waist bar 4, lower edge mobile jib 2 and another waist bar 4 on same vertical plane successively
It is connected with a facade brace 8, forms polygon braced frame;About 8 adjacent facade brace in two polygon braced frames
Time diagonal web member 13 is connected between end, the adjacent secondary diagonal web member 13 is symmetrical about the facade brace 8 connected jointly.
In the present embodiment, polygon braced frame is divided into two groups, and first group is enclosed in outside main vertical web rod 3 and horizontal straight-bar 5
It encloses, be formed with core polygon braced frame, second group is enclosed in vacant position, forms hollow polygon braced frame;First group
With second group in the long upward alternate intervals parallelly distribute on of truss.
The horizontal cross brace that horizontal brace 11 forms, horizontal cross are connected between second group of hollow polygon braced frame
The intersection of support, which is brought out into the open, connects 5 junction of main vertical web rod 3 and horizontal straight-bar.
In the present embodiment, wind up mobile jib 1 and lower edge mobile jib 2 are long to be connected separately with time bar 9 that winds up in the same direction on both sides of the middle
With lower edge time bar 10;Described to wind up time bar 9 and lower edge time bar 10 is to be symmetrical arranged in the middle part of space truss, time bar 9 that winds up is longitudinal long
Degree is less than lower edge time 10 longitudinal length of bar;Vertical face where polygon braced frame include wind up mobile jib 1, lower edge mobile jib 2, wind up
Secondary bar 9 and lower edge time bar 10, facade brace 8, which is connected to, in polygon braced frame winds up on time bar 9 and lower edge time bar 10.
Referring to figure 1 and figure 2, first group of polygon braced frame is provided with one group of reinforcing member on main vertical web rod 3
21, the reinforcing member 21 is round steel pipe, is symmetrically distributed in main 3 two sides of vertical web rod;It is perpendicular in first group of polygon braced frame
It is only winded up at time bar 9 into face, 21 one end of reinforcing member is connected to main 3 middle and upper part of vertical web rod, and one end is connected to time bar 9 that winds up
End;Only have at lower boom in first group of polygon braced frame vertical face, 21 one end of reinforcing member is connected to main vertical web rod 3
Middle and lower part, one end are connected to lower edge time 10 end of bar;Wherein Fig. 2 is located at time 9 end section of bar of winding up, and is first group of polygon
It winds up in braced frame vertical face time bar 9 and the shared place of lower edge time bar 10, respectively common setting reinforcing member 21.
Referring to shown in Fig. 1 and Fig. 3,4 both ends of waist bar are connected with horizontal chord between the end of extension and two waist bars 4 respectively
Bar 12;Horizontal chord member 12 is located at the outside of 6 place end face of truss upright-column, horizontal chord member 12 and horizontal straight-bar 5 same plane simultaneously
It is parallel to horizontal straight-bar 5, is provided between horizontal chord member 12 and the mobile jib 1 that winds up, lower edge mobile jib 2 and plane where 4 end of waist bar
Polygonal frame 15.
In the present embodiment, the polygonal frame 15 is hexagon plane frame;Polygon frame is symmetrical about truss upright-column 6
Arrangement;Pass through 19 phase of connecting rod with the upper connection point of 4 junction of waist bar and 6 upper end end of truss upright-column on polygonal frame 15
Even, polygonal frame 15 is connected with the low connection point of 4 junction of waist bar with 6 lower end of truss upright-column by connecting rod 19.
Polygonal frame 15 includes 16 He of upper horizon bar 16 and lower horizon bar 17 and upper horizon bar being parallel to each other up and down
Four braces 18 between lower horizon bar 17, four braces 18 are divided to for two groups and the V-shaped connection in end, and V-arrangement tie point is outside,
Within angle angle is less than 180 °.
In the present embodiment, V-arrangement tie point is generally aligned in the same plane with horizontal chord member 12, passes through waist bar 4 and horizontal 12 end of chord member
5 end of horizontal straight-bar connection in portion and truss upright-column 6;Brace 18 and upper 16 tie point of horizon bar are vertical by connecting rod 19 and truss
6 upper end end of column is connected, and brace 18 is connected by connecting rod 19 with 6 lower end of truss upright-column with lower 17 tie point of horizon bar.
In the present embodiment, the both ends and middle part of the bar 16 above the average of polygonal frame 15 and lower horizon bar 17 respectively with level
The both ends of chord member 12 and middle part are corresponding connected;Lower 17 middle part of horizon bar is connected with web member 20 with upper 16 both ends of horizon bar, middle part,
Lower 17 end of horizon bar and upper 16 end of horizon bar have been correspondingly connected with web member 20.
In the present embodiment, at space truss both ends, the main vertical web rod 3 of outermost and winding up is installed between mobile jib 1 and lower edge mobile jib 2
There is steel-casting 14, is again provided with steel-casting 14 in lower edge time 10 end point of bar;Wherein steel-casting 14 is node connector, is set
Set at multiplex roles node, can prefabricated multiplex roles connector, be convenient for prefabricated installation.
A kind of construction method of the parallel space truss of large span polygon variable cross-section, specific steps are as follows:
Step 1: setting up space truss moulding bed, both ends truss upright-column 6 is installed, and put steel-casting 14 in advance;
Step 2: according to space truss position, location and installation is winded up mobile jib 1 and lower edge mobile jib 2, then winding up mobile jib 1 and under
2 middle part erecting and welding of string mobile jib winds up time bar 9 and lower edge time bar 10;
Step 3: correction adjusts installation member position, and in the position for marking main vertical web rod 3 on mobile jib 1 and lower edge mobile jib 2 of winding up
It sets, then successively the main vertical web rod 3 of erecting and welding and main diagonal web member 7;
It is connected Step 4: setting up waist bar 4 and installing horizontal straight-bar 5 with main vertical web rod 3, it is accurately fixed during which to carry out to 4 position of waist bar
Position and measurement;
Step 5: mounting vertical plane brace 8, horizontal brace 11 and secondary diagonal web member between the mobile jib 1 that winds up, lower edge mobile jib 2 and waist bar 4
13;
Step 6: carrying out after the installation of completion truss main body, repetition measurement and adjustment are carried out to the position of main body truss, and at its both ends
Horizontal chord member 12 is installed on the outside of portion, in horizontal chord member 12 and the setting polygonal frame 15 between mobile jib 1, lower edge mobile jib 2 that winds up, is used in combination
Connecting rod 19 is connected and fixed.
The above-mentioned construction method for overall space truss, in addition, sub-unit can also be used for the installation of space truss
Formula installation is constructed truss sub-unit simultaneously respectively that is, by space truss symmetry division at different truss sub-units, finally again into
Elongated rod piece is connected and installed between row sub-unit, and construction efficiency can be improved in this mode.
Obviously, above-described embodiment is only intended to clearly illustrate made by outstanding feature of the invention and illustrates, and is not pair
The restriction of embodiment of the present invention;It, still can be on the basis of above explained use for those skilled in the art
It makes other variations or changes in different ways, if not carrying out inventive improvements to it, all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of parallel space truss of large span polygon variable cross-section, it is characterised in that: above and below in same perpendicular
Disjoint mobile jib that winds up (1) and lower edge mobile jib (2), one group of connection parallel interval are distributed in the mobile jib that winds up (1) and lower edge mobile jib
(2) the main vertical web rod (3) between, plane two sides where being distributed in the mobile jib that winds up (1) and lower edge mobile jib (2) and is parallel to each other pair
The waist bar (4) and one group of parallel interval for claiming setting are connected to the horizontal straight-bar (5) between two waist bars (4);The mobile jib that winds up
(1) and lower edge mobile jib (2) is symmetrical curved rod, and the main vertical web rod (3) is successively successively decreased from both sides to intermediate altitude;The waist
Plane where bar (4) and the mobile jib that winds up (1) and lower edge mobile jib (2) place plane are mutually perpendicular to, the horizontal straight-bar (5) with it is corresponding
Main vertical web rod (3) vertically connect.
2. a kind of parallel space truss of large span polygon variable cross-section according to claim 1, it is characterised in that: described
It winds up and is connected with vertically truss upright-column (6) between mobile jib (1) and lower edge mobile jib (2) both side ends, truss upright-column (6) and adjacent master
Vertical web rod is connected with bridging between (3);Truss upright-column (6) vertical connection corresponding with horizontal straight-bar (5) of waist bar (4) end.
3. a kind of parallel space truss of large span polygon variable cross-section according to claim 2, it is characterised in that: adjacent
Main diagonal web member (7) are connected between main vertical web rod (3), in the middle part of space truss centered on main vertical web rod (3), the oblique abdomen of the master of two sides
Bar (7) is symmetrical arranged, wherein the main diagonal web member (7) on the left of the main vertical web rod (3) in middle part is inclined to left side, the main vertical web rod in middle part (3) is right
The main diagonal web member (7) of side is inclined to right side;The both ends of the main diagonal web member (7) are connected to the upper and lower of adjacent main vertical web rod (3)
Between end.
4. a kind of parallel space truss of large span polygon variable cross-section according to claim 3, it is characterised in that: described
It winds up and is connected with one in turn on same vertical plane between mobile jib (1), waist bar (4), lower edge mobile jib (2) and another waist bar (4)
Facade brace (8) forms polygon braced frame;In two polygon braced frames between adjacent facade brace (8) upper and lower end parts
It is connected with time diagonal web member (13), the adjacent secondary diagonal web member (13) is symmetrical about the facade brace (8) connected jointly;
The polygon braced frame is divided into two groups, and first group is enclosed in main vertical web rod (3) and horizontal straight-bar (5) periphery, is formed
There is core polygon braced frame, second group is enclosed in vacant position, forms hollow polygon braced frame;First group and second group
In the long upward alternate intervals parallelly distribute on of truss.
5. a kind of parallel space truss of large span polygon variable cross-section according to claim 4, it is characterised in that: second
The horizontal cross brace of horizontal brace (11) composition, the crosspoint of horizontal cross brace are connected between group hollow polygon braced frame
It wears and connects main vertical web rod (3) and horizontal straight-bar (5) junction.
6. a kind of parallel space truss of large span polygon variable cross-section according to claim 5, it is characterised in that: described
Winding up, mobile jib (1) and lower edge mobile jib (2) are long to be connected separately in the same direction wind up time bar (9) and the secondary bar of lower edge on both sides of the middle
(10);It is described to wind up time bar (9) and lower edge time bar (10) is arranged symmetrically in the middle part of space truss.
7. a kind of parallel space truss of large span polygon variable cross-section according to claim 6, it is characterised in that: described
Section where polygon braced frame include wind up mobile jib (1), lower edge mobile jib (2), wind up time bar (9) and the secondary bar (10) of lower edge,
Facade brace (8), which is connected to, in polygon braced frame winds up on time bar (9) and lower edge time bar (10).
8. a kind of parallel space truss of large span polygon variable cross-section described in -7 any one according to claim 1, special
Sign is: waist bar (4) both ends, which are distinguished, is connected with horizontal chord member (12) between extension and the end of two waist bars (4);
The outside of end face where the horizontal chord member (12) is located at truss upright-column (6), horizontal chord member (12) and horizontal straight-bar (5) exist
Same plane is simultaneously parallel to horizontal straight-bar (5), and horizontal chord member (12) and the mobile jib (1) that winds up, lower edge mobile jib (2) and waist bar (4) are held
Polygonal frame (15) are provided between plane where portion.
9. a kind of parallel space truss of large span polygon variable cross-section according to claim 8, it is characterised in that: described
Polygonal frame (15) is hexagon plane frame, is arranged symmetrically about truss upright-column (6);Polygonal frame (15) passes through waist bar
(4) it is connect with horizontal straight-bar (5) end on horizontal chord member (12) end and truss upright-column (6);On polygonal frame (15)
The upper connection point connecting with waist bar (4) is connected with truss upright-column (6) upper end end by connecting rod (19), polygonal frame (15)
The upper low connection point connecting with waist bar (4) is connected with truss upright-column (6) lower end by connecting rod (19).
10. a kind of construction method of parallel space truss of large span polygon variable cross-section according to claim 9, special
Sign is, specific steps are as follows:
Step 1: setting up space truss moulding bed, install both ends truss upright-column (6);
Step 2: according to space truss position, location and installation is winded up mobile jib (1) and lower edge mobile jib (2), then in the mobile jib that winds up
(1) and in the middle part of lower edge mobile jib (2) it installs and connects wind up time bar (9) and lower edge time bar (10);
Step 3: correction adjusts installation member position, and main vertical web rod is marked on the mobile jib that winds up (1) and lower edge mobile jib (2)
(3) then main vertical web rod (3) and main diagonal web member (7) are successively installed in position;
It is connected Step 4: setting up waist bar (4) and installing horizontal straight-bar (5) with main vertical web rod (3), and waist bar (4) position is carried out
It is accurately positioned and measures;
Step 5: between the mobile jib that winds up (1), lower edge mobile jib (2) and waist bar (4) mounting vertical plane brace (8), horizontal brace (11) and
Secondary diagonal web member (13);
Step 6: complete to install horizontal chord member (12) on the outside of truss body end, horizontal chord member (12) and wind up mobile jib (1) and
Polygonal frame (15) are set between lower edge mobile jib (2), and are connected and fixed with connecting rod (19).
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Publication number | Priority date | Publication date | Assignee | Title |
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CN115059179A (en) * | 2022-06-30 | 2022-09-16 | 中国能源建设集团湖南省电力设计院有限公司 | Large-span column/cable truss net structure |
CN115059179B (en) * | 2022-06-30 | 2023-11-24 | 中国能源建设集团湖南省电力设计院有限公司 | Large-span column/cable truss structure |
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Application publication date: 20190426 |