CN109356292A - Assembled prestressed large-span beam structure - Google Patents
Assembled prestressed large-span beam structure Download PDFInfo
- Publication number
- CN109356292A CN109356292A CN201811442186.0A CN201811442186A CN109356292A CN 109356292 A CN109356292 A CN 109356292A CN 201811442186 A CN201811442186 A CN 201811442186A CN 109356292 A CN109356292 A CN 109356292A
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- Prior art keywords
- strut
- prefabricated
- long
- truss
- web member
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- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 14
- 238000005265 energy consumption Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 17
- 238000005452 bending Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
-
- 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
- E04C3/10—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal prestressed
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an assembled prestressed large-span beam structure which comprises a truss beam, wherein the truss beam comprises an upper chord, a lower chord and a plurality of assembling units, the upper chord comprises a first supporting rod and a second supporting rod which are arranged in parallel and at intervals, and the first supporting rod is connected with the second supporting rod through a connecting piece; the lower chord is arranged below the upper chord and between the first support rod and the second support rod, and the lower chord and the upper chord are arranged in parallel; the assembly unit comprises a plurality of web members, the lower ends of the web members are arranged in a neighboring mode and hinged to the lower chord member, the upper end of one part of the web members is hinged to the first supporting rod, the upper end of the other part of the web members is hinged to the second supporting rod, the web members are connected to the first supporting rod at intervals, and the web members are connected to the first supporting rod at intervals. The invention can be assembled on site according to the use requirement, the construction is convenient and quick, the manufacturing cost is reduced, the node adopts a hinged mode, the axle center of the web member can be ensured not to be affected by bending moment, and the invention has green construction and convenient maintenance.
Description
Technical field
The present invention relates to industrialization assembled architecture technical field, in particular to a kind of prefabricated PC long-span beams knots
Structure.
Background technique
Assembling type steel structure has many advantages, such as, large-scale production, on-site assembly, green construction, quick construction, and with it is mixed
Xtah Crude Clay structure has a clear superiority compared to anti-seismic performance, is a kind of new structure risen in recent years, thus is widely used
In the design-build of building construction, but it is rarely applied in longspan structure.
Large span girder structure is mostly prestressed reinforced concrete construction, and figure and component are huge, and section ratio of height to thickness is excessive, to sky
Between it is more demanding, material consumption is huge, and cost is excessively high, and span centre deformation excessive causes anti-seismic performance to weaken；Traditional large span beam type
Structure is mostly rigid joint, and node is complicated, and difficulty of construction is big, and the speed of application slow period is long, and construction pollution is serious, and is tieed up after shaking
It is more difficult to repair.
Summary of the invention
The object of the present invention is to provide one kind, can to save space, the convenient and easy to maintenance prefabricated PC of construction big
Span girder construction.
In order to achieve the above objectives, the present invention provides a kind of prefabricated PC long-span beams structures comprising girder truss,
The girder truss includes:
Top boom comprising be arranged in parallel and at interval the first strut and the second strut, first strut passes through connection
Part connects with second strut；
Lower boom, is set to the lower section of the top boom and between first strut and second strut,
And the lower boom is arranged in parallel with the top boom；
Multiple groups of orders member, described group of order member includes multiple web members, the neighbouring setting in the lower end of multiple web members and with
The lower boom is hinged, and the upper end of a part of web member and first strut are hinged, the upper end of web member described in another part
It is hinged with second strut, and it is connected to each web member interval setting on first strut, it is connected to described first
Each web member interval setting on strut.
Prefabricated PC long-span beams structure as described above, wherein be connected to the lower boom both ends and centre
Each web member of described group of order member be anti-buckling support rod, the anti-buckling support rod includes sleeve and is set to described
H profile steel energy consumption inner core in sleeve, and concrete is filled between the sleeve and the H profile steel energy consumption inner core.
Prefabricated PC long-span beams structure as described above, wherein first strut, second strut and institute
It states and is respectively equipped with multiple otic placodes on lower boom, the both ends of the both ends of the web member and the anti-buckling support rod are equipped with can be with institute
State the hinged connecting piece of otic placode.
Prefabricated PC long-span beams structure as described above, wherein the connecting piece include at least two it is parallel and
Every the connecting plate of setting, the otic placode can be inserted between two connecting plates, and the otic placode is equipped with otic placode through-hole, the company
Fishplate bar is equipped with connection through-hole corresponding with the otic placode through-hole, passes through the two connection through-holes and the otic placode by bolt
Through-hole is screwed on nut, and the connecting plate connects with the otic placode.
Prefabricated PC long-span beams structure as described above, wherein the connecting piece further includes being connected to the abdomen
The fixed plate at the both ends of bar and the both ends of the anti-buckling support rod, the connecting plate are connected in the fixed plate.
Prefabricated PC long-span beams structure as described above, wherein the connector is multiple connecting rods, the company
The structure of extension bar is identical as the structure of the web member, and has between adjacent two connecting rod and be greater than 0 ° and the folder less than 180 °
Angle.
Prefabricated PC long-span beams structure as described above, wherein angle between adjacent two connecting rod
Angle is 60 °.
Prefabricated PC long-span beams structure as described above, wherein ungauged regions coagulation is filled in the lower boom
Soil is embedded at least one prestress wire in the non-shrinkage concrete.
Prefabricated PC long-span beams structure as described above, wherein formed between the web member and the lower boom
Angle angle be 60 °.
Prefabricated PC long-span beams structure as described above, wherein be connected with the first truss on first strut
Strutbeam is connected with the second truss strutbeam, the structure of the first truss strutbeam and the second truss branch on second strut
The structure of beam is identical as the girder truss, and the of the second strut of the first truss strutbeam and the second truss strutbeam
Two struts are same, first strut of the lower boom of the first truss strutbeam for the girder truss, the second truss branch
The lower boom of beam is the second strut of the girder truss.
Compared with prior art, advantages of the present invention is as follows:
Prefabricated PC long-span beams structure of the invention makes using hingedly between web member and top boom and lower boom
Obtaining prefabricated PC long-span beams structure live can carry out prefabrication, assembled in situ according to use demand, easy for construction fast
Victory reduces cost, and spatial volume is small, while using hinged joint, can guarantee that bending moment does not act in web member axle center, stress
Rationally, and integrated application assembled technology, BRB (anti-buckling constraint support) technology and prestressing technique, and optimize section
Steel using amount is reduced, anti-seismic performance is improved, green construction is easy to maintenance；
Prefabricated PC long-span beams structure of the invention, prefabricated PC long-span beams structure both ends and across
Middle unit replaces web member using anti-buckling support rod, and anti-buckling support rod, which can not only effectively consume energy, enhances the big of girder structure
Seismic stability is shaken, anti-bending strength is reinforced, improves anti-seismic performance, additionally it is possible to optimize section, further save space, so that assembly
Formula prestressed large-span girder construction space flexibility with higher；
Prefabricated PC long-span beams structure of the invention, top boom, lower boom and web member are all made of round steel pipe, steel pipe
It accepts rationally, the cross sectional moment of inertia in horizontal and vertical direction is equal, and anti-torsion is functional, and anti-seismic performance is good；
Prefabricated PC long-span beams structure of the invention, each component can be produced in batches by factory, so that live
It is simple and convenient to assemble assembly operation,
Prefabricated PC long-span beams structure of the invention applies precompressed to lower boom in advance by prestress wire
Power, to resist the tension effect of lower boom, to enhance the stress performance of optimization lower boom.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the schematic perspective view of prefabricated PC long-span beams structure of the invention；
Fig. 2 is the schematic view of the front view of prefabricated PC long-span beams structure shown in FIG. 1；
Fig. 3 is the structural schematic diagram of Section A-A in Fig. 2；
Fig. 4 is the structural schematic diagram of anti-buckling support rod in the structure of prefabricated PC long-span beams shown in Fig. 1；
Fig. 5 is the cross section structure schematic diagram of anti-buckling support rod shown in Fig. 4；
Fig. 6 is the cross section structure schematic diagram of lower boom in the structure of prefabricated PC long-span beams shown in Fig. 1；
Fig. 7 is the cross section structure schematic diagram of another prefabricated PC long-span beams structure of the invention.
Drawing reference numeral explanation:
100, girder truss；
1, the first strut；
2, the second strut；
3, connecting rod；
4, lower boom；41, non-shrinkage concrete；42, prestress wire；
5, web member；
6, anti-buckling support rod；61, sleeve；62, concrete；63, H profile steel energy consumption inner core；
7, connecting piece；71, connecting plate；711, through-hole is connected；72, fixed plate；
8, otic placode；
200, the first truss strutbeam；
300, the second truss strutbeam.
Specific embodiment
In order to have clearer understanding to technical solution of the present invention, purpose and effect, now in conjunction with the Detailed description of the invention present invention
Specific embodiment.
As shown in Figure 1, Figure 2 and Figure 3, the present invention provides a kind of prefabricated PC long-span beams structures comprising purlin
Set a roof beam in place 100, girder truss 100 includes top boom, lower boom 4 and multiple groups of orders members, wherein top boom includes parallel and interval is set
The first strut 1 and the second strut 2 set, the first strut 1 and the second strut 2 be all made of cross section be circular steel pipe, steel pipe by
Rationally, the cross sectional moment of inertia in horizontal and vertical direction is equal, and anti-torsion is functional, and anti-seismic performance is good for reason, and the first strut 1 is logical
It crosses connector to connect with the second strut 2, is fixed the relative position of the first strut 1 and the second strut 2 by connector, so that the
One strut 1 is parallel to each other always with the second strut 2；Lower boom 4 is set to the lower section of top boom and is located at the first strut 1 and second
Between strut 2, and lower boom 4 is arranged in parallel with top boom, i.e., lower boom 4, the first strut 1 and the second strut 2 are parallel in space
Distribution, it is preferred that the axis of lower boom 4, the first strut 1 and the second strut 2 is located at three inclines of regular triangular prism；Respectively
Group order member is set in turn between top boom and lower boom 4, specifically, group order member includes multiple web members 5, multiple web members 5
The neighbouring setting in lower end and hinged with lower boom 4, the upper end of a part of web member 5 and the first strut 1 are hinged, another part web member 5
Upper end and the interval of each web member 5 setting that is hinged, and being connected on the first strut 1 of the second strut 2, be connected on the first strut 1
Each interval of web member 5 setting, it is preferred that group order member includes four web members 5, and four web members 5 are symmetrical arranged two-by-two, and is symmetrical arranged
Two web members 5 in one join with the first strut 1, another is hinged with the second strut 2, so that the first strut 1 and second
The stress equalization of strut 2.
It should be noted that the quantity of the web member 5 of group order member can be according to actual use demand setting, preferably even number
It is a, such as 6 or 8, so that it is identical with 5 quantity of web member on the second strut 2 to be connected to the first strut 1, the first strut 1
With the stress equalization of the second strut 2.
Further, as shown in figure 3, the angle of the angle formed between web member 5 and lower boom 4 is 60 °, i.e., adjacent two web member
5 are enclosed equilateral triangle with top boom or lower boom 4, and such structure can effectively ensure that prefabricated PC is big
The stability of span girder construction, certainly, the angle of the angle formed between web member 5 and lower boom 4 can be other angles, such as
30 ° or 45 °, details are not described herein.
Prefabricated PC long-span beams structure of the invention uses hingedly between web member 5 and top boom and lower boom 4,
So that prefabricated PC long-span beams structure live can be assembled according to use demand, and it is easy for construction fast, it reduces and makes
Valence, and spatial volume is small, while using hinged joint, can guarantee that bending moment does not act in web member 5 axle center, structure is simple, stress
Rationally, and green construction, easy to maintenance.
In one embodiment of the invention, it is connected to each web member 5 of the group order member of 4 both ends of lower boom and centre
For anti-buckling support rod 6, as shown in Figure 4 and Figure 5, anti-buckling support rod 6 includes sleeve 61 and the H profile steel being set in sleeve 61
Energy consumption inner core 63, and concrete 62 is filled between sleeve 61 and H profile steel energy consumption inner core 63, sleeve 61 uses cross section Cheng Yuan
The steel pipe of shape is made, and H profile steel energy consumption inner core 63 is axially extending along sleeve 61, i.e., in prefabricated PC long-span beams structure
Both ends and span centre unit replace web member 5 using anti-buckling support rod 6, and anti-buckling support rod 6 can not only effectively consume energy strengthened beam
The big shake seismic stability of formula structure reinforces anti-bending strength, improves anti-seismic performance, additionally it is possible to optimize section, further save sky
Between, so that prefabricated PC long-span beams structure space flexibility with higher.
It should be noted that can be according to the actual use strength demand of prefabricated PC long-span beams structure, by it
Each web member 5 of the group order member at his position replaces with anti-buckling support rod 6, but organizes order member and need replacement in pairs and symmetrical
Arrangement.
Further, for the ease of the connection between web member 5 or anti-buckling support rod 6 and top boom and lower boom 4, such as Fig. 1
It is shown, multiple otic placodes 8, the both ends of web member 5 and anti-buckling branch are respectively equipped on the first strut 1, the second strut 2 and lower boom 4
The both ends of strut 6 are equipped with connecting piece 7 that can be hinged with otic placode 8, hinged by connecting piece 7 and otic placode 8, so that web member 5 or anti-
Buckling support bar 6 connects with top boom and lower boom 4, the setting of connecting piece 7 and otic placode 8, so that web member 5 or anti-buckling support rod
Connection between 6 and top boom and lower boom 4 is simple and convenient, so that assembling prefabricated PC long-span beams structure now
It is simple to operate, it is time saving and energy saving.
Further, as shown in Figure 1 and Figure 4, connecting piece 7 includes at least two and is arranged in parallel and at interval connecting plate 71, connects
The end of plate 71 is the semicircle convenient for rotating around otic placode 8, and otic placode 8 can be inserted between two connecting plates 71, and two connecting plates 71
It can be rotated relative to otic placode 8, otic placode 8 is equipped with otic placode through-hole (not shown), and connecting plate 71 is equipped with opposite with otic placode through-hole
The connection through-hole 711 answered passes through two connection through-holes 711 and otic placode through-hole and nut (in figure not by bolt (not shown)
Show) it is screwed on, connecting plate 71 connects with otic placode 8, wherein bolt uses high-strength bolt, to improve the bonding strength of junction.
It is of course also possible to which by wearing connecting pin in two connection through-holes 711 and otic placode through-hole, connecting pin connect logical with two
Hole 711 and otic placode through-hole interference fit, to ensure that connecting pin will not loosen in use, to guarantee connecting piece 7 and ear
The reliability that plate 8 connects.
Further, since the cross section of web member 5 and anti-buckling support rod 6 is rounded, so that connecting plate 71 and web member 5
Or the contact surface between anti-buckling support rod 6 is less, is not easy to be attached operation, for the ease of connecting plate 71 and web member 5 or
The anti-buckling support rod 6 of person connects, and connecting piece 7 further includes the fixation at the both ends for being connected to web member 5 and the both ends of anti-buckling support rod 6
Plate 72, connecting plate 71 are connected in fixed plate 72, i.e., connecting plate 71 is connected to web member 5 or anti-buckling support by fixed plate 72
On the end face of bar 6, specifically, fixed plate 72 is respectively welded at the both ends of web member 5 and the both ends of sleeve 61, and by connecting plate 71
It is welded in fixed plate 72, in this way, the contact area between connecting plate 71 and web member 5 or anti-buckling support rod 6 can either be increased,
The reliability of connection is improved, and the attended operation between connecting plate 71 and web member 5 or anti-buckling support rod 6 can be made simply square
Just.
In one embodiment of the invention, as shown in Figure 1, connector is multiple connecting rods 3, the structure of connecting rod 3
Identical as the structure of web member 5, i.e. the both ends of connecting rod 3 are again provided with connecting piece 7, are connected by connecting piece 7 with otic placode 8, connection
Bar 3 connects with the first strut 1 and the second strut 2, so that the assembly manipulation of prefabricated PC long-span beams structure is simply square
Just, and between adjacent two connecting rod 3 have and be greater than 0 ° and the angle less than 180 °, i.e., be not parallel to each other between adjacent two connecting rod 3
Setting, to ensure that the relative positional relationship between the first strut 1 and the second strut 2 is constant, it is preferred that adjacent two connecting rod 3 it
Between angle angle be 60 °, i.e., adjacent two connecting rod 3 and the first strut 1 or the second strut 2 are enclosed equilateral triangle,
The stability that connecting rod 3 connects the first strut 1 and the second strut 2 is effectively ensured.
It should be noted that connecting rod 3 and web member 5 of the invention is roughly the same with the structure of anti-buckling support rod 6, it is different
Place is only that the inside of anti-buckling support rod 6 has the concrete 62 for being embedded with H profile steel energy consumption inner core 63.
In one embodiment of the invention, as shown in fig. 6, since the usual stress of lower boom 4 is larger, in order to improve down
The stress performance of chord member 4 is filled with non-shrinkage concrete 41 in lower boom 4, is embedded at least one in non-shrinkage concrete 41
Root prestress wire 42, by prestress wire 42 in advance to lower boom 4 apply precompression, come resist lower boom 4 by
Drawing effect, to enhance the stress performance of optimization lower boom 4；Preferably, four prestressing force are embedded in non-shrinkage concrete 41
Steel strand wires 42, and multiple intervals and liner plate (not shown) disposed in parallel are set in non-shrinkage concrete 41, four
Prestress wire 42 both passes through liner plate, limits the relative positional relationship of four prestress wires 42, by liner plate to ensure
Every prestress wire 42 can apply precompression to lower boom 4.
Certainly, in actual use, can be adjusted according to the use intensity demand of prefabricated PC long-span beams structure
The quantity of inbuilt prestress wire 42 in non-shrinkage concrete 41, it should be noted that when the quantity used is greater than 1,
It then needs that liner plate is arranged, to limit the relative positional relationship of each prestress wire 42.
In one embodiment of the invention, as shown in fig. 7, being connected with the first truss strutbeam 200 on the first strut 1,
The second truss strutbeam 300, the structure of the structure of the first truss strutbeam 200 and the second truss strutbeam 300 are connected on second strut 2
It is identical as girder truss 100, and the second strut 2 of the first truss strutbeam 200 and the second strut 2 of the second truss strutbeam 300 are
Same, the lower boom 4 of the first truss strutbeam 200 is the first strut 1 of girder truss 100, the lower boom of the second truss strutbeam 300
4 be the second strut 2 of girder truss 100, to form the prefabricated PC long-span beams structure of a bilayer and larger size, when
So, prefabricated PC long-span beams structure can also be the structure of three layers or more layers, connection type with above-mentioned two layers
Identical, details are not described herein.
In conclusion prefabricated PC long-span beams structure of the invention, is adopted between web member and top boom and lower boom
With hinged so that prefabricated PC long-span beams structure can scene prefabrication, assembled in situ carried out according to use demand, apply
Work facilitates fast, reduces cost, and spatial volume is small, while using hinged joint, can guarantee web member axle center not bending moment
Effect, reasonable stress, and integrated application assembled technology, BRB (anti-buckling constraint support) technology and prestressing technique, and
Optimizing section reduces steel using amount, improves anti-seismic performance, and green construction is easy to maintenance；
Prefabricated PC long-span beams structure of the invention, prefabricated PC long-span beams structure both ends and across
Middle unit replaces web member using anti-buckling support rod, and anti-buckling support rod, which can not only effectively consume energy, enhances the big of girder structure
Seismic stability is shaken, anti-bending strength is reinforced, improves anti-seismic performance, additionally it is possible to optimize section, further save space, so that assembly
Formula prestressed large-span girder construction space flexibility with higher；
Prefabricated PC long-span beams structure of the invention, top boom, lower boom and web member are all made of round steel pipe, steel pipe
It accepts rationally, the cross sectional moment of inertia in horizontal and vertical direction is equal, and anti-torsion is functional, and anti-seismic performance is good；
Prefabricated PC long-span beams structure of the invention, each component can be produced in batches by factory, so that live
It is simple and convenient to assemble assembly operation,
Prefabricated PC long-span beams structure of the invention applies precompressed to lower boom in advance by prestress wire
Power, to resist the tension effect of lower boom, to enhance the stress performance of optimization lower boom.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, made equivalent changes and modifications under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.And it should be noted that each component part of the invention is not limited in above-mentioned entirety
Using one can be selected individually to use according to actual needs for each technical characteristic described in specification of the invention or selection is more
Item combines use, and therefore, the present invention covers in the nature of things related with this case inventive point other to be combined and specifically answer
With.
Claims (10)
1. a kind of prefabricated PC long-span beams structure, which is characterized in that the prefabricated PC long-span beams structure packet
Girder truss is included, the girder truss includes:
Top boom comprising be arranged in parallel and at interval the first strut and the second strut, first strut by connector with
Second strut connects；
Lower boom, is set to the lower section of the top boom and between first strut and second strut, and institute
Lower boom is stated to be arranged in parallel with the top boom；
Multiple groups of orders member, described group of order member includes multiple web members, the neighbouring setting in the lower end of multiple web members and with it is described
Lower boom is hinged, and the upper end of a part of web member and first strut are hinged, the upper end of web member described in another part and institute
It states that the second strut is hinged, and is connected to each web member interval setting on first strut, be connected to first strut
Upper each web member interval setting.
2. prefabricated PC long-span beams structure according to claim 1, which is characterized in that
Each web member for being connected to the described group of order member at the lower boom both ends and centre is anti-buckling support rod, described
Anti-buckling support rod includes sleeve and the H profile steel energy consumption inner core that is set in the sleeve, and the sleeve and the H profile steel consume
Concrete can be filled between inner core.
3. prefabricated PC long-span beams structure according to claim 2, which is characterized in that
Be respectively equipped with multiple otic placodes on first strut, second strut and the lower boom, the both ends of the web member and
The both ends of the anti-buckling support rod are equipped with connecting piece that can be hinged with the otic placode.
4. prefabricated PC long-span beams structure according to claim 3, which is characterized in that
The connecting piece includes at least two and is arranged in parallel and at interval connecting plate, the otic placode can be inserted in two connecting plates it
Between, the otic placode is equipped with otic placode through-hole, and the connecting plate is equipped with connection through-hole corresponding with the otic placode through-hole, passes through
Bolt passes through the two connection through-holes and the otic placode through-hole is screwed on nut, and the connecting plate connects with the otic placode.
5. prefabricated PC long-span beams structure according to claim 4, which is characterized in that
The connecting piece further includes the fixed plate at the both ends for being connected to the web member and the both ends of the anti-buckling support rod, described
Connecting plate is connected in the fixed plate.
6. prefabricated PC long-span beams structure according to claim 1, which is characterized in that
The connector is multiple connecting rods, and the structure of the connecting rod is identical as the structure of the web member, and described in adjacent two
Have between connecting rod and is greater than 0 ° and the angle less than 180 °.
7. prefabricated PC long-span beams structure according to claim 6, which is characterized in that
The angle of angle between adjacent two connecting rod is 60 °.
8. prefabricated PC long-span beams structure according to claim 1, which is characterized in that
It is filled with non-shrinkage concrete in the lower boom, is embedded at least one prestress steel twist in the non-shrinkage concrete
Line.
9. prefabricated PC long-span beams structure according to claim 1, which is characterized in that
The angle of the angle formed between the web member and the lower boom is 60 °.
10. prefabricated PC long-span beams structure according to any one of claim 1 to 9, which is characterized in that
It is connected with the first truss strutbeam on first strut, is connected with the second truss strutbeam on second strut, described
The structure of one truss strutbeam and the structure of the second truss strutbeam are identical as the girder truss, and the first truss strutbeam
The second strut and the second truss strutbeam the second strut be it is same, the lower boom of the first truss strutbeam is described
First strut of girder truss, the lower boom of the second truss strutbeam are the second strut of the girder truss.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111411573A (en) * | 2019-12-31 | 2020-07-14 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Height-adjustable's pin-connected panel pontoon bridge cross-span steel tower |
| CN112722232A (en) * | 2020-12-14 | 2021-04-30 | 西安康本材料有限公司 | Triangular-section arc-shaped composite material truss and preparation method thereof |
| CN114541585A (en) * | 2022-02-25 | 2022-05-27 | 广西甫筑置业有限公司 | Truss structure design method based on large-space multi-storey building |
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| CN109356292B (en) | 2023-12-05 |
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