CN207919312U - Lateral bracing and the coefficient steel girder bridge structure of main truss can be reduced - Google Patents
Lateral bracing and the coefficient steel girder bridge structure of main truss can be reduced Download PDFInfo
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- CN207919312U CN207919312U CN201820267456.8U CN201820267456U CN207919312U CN 207919312 U CN207919312 U CN 207919312U CN 201820267456 U CN201820267456 U CN 201820267456U CN 207919312 U CN207919312 U CN 207919312U
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- main truss
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Abstract
Lateral bracing and the coefficient steel girder bridge structure of main truss can be reduced the utility model discloses a kind of, it solves the problems, such as that steel girder bridge lateral bracing and main truss collective effect can not be reduced, it makes the loading characteristic of lateral bracing presentation K shape bracings in construction construction stage, the collective effect of bridge erection stage main truss and lateral bracing is reduced, technical solution is：Including the first main truss rod piece and the second main truss rod piece, the cross bar perpendicular to the two is connected between the first main truss rod piece and the second main truss rod piece, the first main truss rod piece and the second main truss rod piece are additionally provided with brace, and the brace both ends are both secured on gusset plate；The corresponding first segment contact plate of the brace one end is provided with multiple slotted holes, and bolt is worn in slotted hole and connect first segment contact plate with brace；The corresponding second node plate in described brace the other end is provided with multiple circular holes, and high-strength bolt is worn in circular hole and fastens second node plate and brace.
Description
Technical field
The utility model is related to steel girder bridge technical fields, are total to main truss more particularly to a kind of lateral bracing that can reduce
The steel girder bridge structure of same-action.
Background technology
Steel Truss Beam generally comprises main truss, the vertically and horizontally main parts sizes such as bracing, bridge deck, by high-strength bolt or
Weld integral, it is " zero rod piece " to have the characteristics that rigidity is big and can change " whole beam section ", can be applied to suspension bridge, oblique pull
The different Bridge Types such as bridge, arch bridge, beam bridge are suitable for the different geographical conditions such as mountain area, Plain, ocean, in recent years at me
State's highway and railroad bridge have obtained extensive utilization.
In the actual use process, the main truss for constituting Steel Truss Beam will be with lateral bracing, bridge deck for steel truss structure
Collective effect occurs.This collective effect is unfavorable to main truss, lateral bracing and bridge deck；Main truss is made jointly with bridge deck
The result is that stress is larger outside the face of bridge deck crossbeam, often control design case；Main truss makes connection with lateral bracing collective effect
The internal force of clone rod piece increases, and bracing is face outside direction to the active force of main truss, increases the generation of main truss node steel plate
The risk of lamellar tearing.
The effect of bridge deck is to undertake and transmit the loads such as vehicle, pedestrian, and the collective effect of bridge deck and main truss has obtained
Effective solution is arrived.It is the method using flexible longeron in early days；In recent years generally use plate girder combined system, i.e., floorings with
Main truss weld (steel bridge deck) or pour (concrete slab) it is integral, can also by bridge deck longeron be pre-stretched make its
With main truss compatibility of deformation under dead load state, its adverse effect is reduced.
The effect of lateral bracing is that bridge span structure is made to form stable space structure, two under vertically and horizontally uneven load
Side main truss can common stress.Lateral bracing has several patterns such as X-shape, diamond shape, triangle and K shapes (as shown in Figure 1), if
Timing selects different bracing layout patterns according to the spacing of main truss internode and the center spacing of main truss, and vertically and horizontally spacing ratio exists
When 0.8~1.2 lateral bracing generally use diamond shape either triangle vertically and horizontally large percentage or it is smaller when generally use K
Shape.According to bridge specification it is found that except K shapes bracing because the smaller collective effect with main truss of the longer rigidity of its cross bar can be ignored not
Meter is outer, and the bracing of other forms and the collective effect of main truss are larger, are considered as its adverse effect.With steel truss structure towards
Develop across the direction of, long connection greatly, the design of lateral bracing has also gradually turned to intensity control by stiffness reliability (internal force is smaller)
It makes (internal force is larger), because lateral bracing cannot form entirety as bridge deck with main truss, how to reduce main truss and join with longitudinal
The collective effect of clone becomes the key for improving steel truss structure system stress.
Highway bridge has the characteristics that dead load accounting is big, and general dead load accounts for the ratio of whole load 70% or more；Railway
Bridge dead load accounting also has gradual increased trend, and Partial Bridges dead load ratio is up to 50%.If can reduce and even be eliminated dead load
The collective effect of stage main truss and lateral bracing can then substantially improve the stress of Steel Truss Beam structure.
In conclusion in addition to K shape lateral bracings, in the prior art for can not reduce steel girder bridge lateral bracing and
The problem of main truss collective effect, still lacks effective solution scheme.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model, which provides, a kind of can reduce lateral bracing and main truss
Coefficient steel girder bridge structure makes lateral bracing that the loading characteristic of K shape bracings be presented, drops in construction construction stage
The low collective effect of bridge erection stage main truss and lateral bracing；
Further, the utility model uses following technical proposals：
It is a kind of to reduce lateral bracing and the coefficient steel girder bridge structure of main truss, including the first main truss rod piece and
Two main truss rod pieces, are connected with the cross bar perpendicular to the two between the first main truss rod piece and the second main truss rod piece, and described first
Main truss rod piece and the second main truss rod piece are additionally provided with brace, and the brace both ends are both secured on gusset plate；The brace one
The corresponding first segment contact plate in end is provided with multiple slotted holes, and bolt is worn in slotted hole and connects first segment contact plate and brace
It connects；The corresponding second node plate in described brace the other end is provided with multiple circular holes, and high-strength bolt is worn in circular hole by the second section
Contact plate is fastened with brace.
Further, the brace is i-shape component.
Further, the upper and lower ends face of the brace is connect by the first splice plate with first segment contact plate.
Further, first splice plate is equipped with multiple circular holes, and high-strength bolt is worn in circular hole corresponding with brace will
First splice plate is connected with brace；Circular hole corresponding with first segment contact plate and the slotted hole of first segment contact plate are correspondingly arranged, and by
Bolt connects.
Further, the middle part montant of the i-shape component is connect by the second splice plate with node internal partition, described
Node internal partition is fixedly connected with first segment contact plate.
Further, the node internal partition is equipped with multiple slotted holes, and bolt is worn in slotted hole by the second splicing
Plate is connect with node internal partition.
Further, second splice plate is equipped with multiple circular holes, and high-strength spiral shell is worn in circular hole corresponding with middle part montant
Bolt connects the second splice plate with middle part montant；Circular hole corresponding with the node internal partition and slotted hole of node internal partition is corresponding sets
It sets, and is connected by bolt.
Further, the first segment contact plate is fixedly connected with the first main truss rod piece or the second main truss rod piece or cross bar.
Further, the second node plate is fixedly connected with the first main truss rod piece or the second main truss rod piece.
For overcome the deficiencies in the prior art, the utility model additionally provides that a kind of to reduce lateral bracing and main truss total
The construction method of the steel girder bridge structure of same-action, includes the following steps：
Each main truss rod piece, cross bar and brace are set up, second node plate is fixed on main truss rod piece, by second node plate and tiltedly
Bar is fixed by high-strength bolt, and first segment contact plate is fixed on main truss rod piece or cross bar, will be led between first segment contact plate and brace
It crosses bolt and punch connects temporarily；In erection process, micro movement occurs at the slotted hole of first segment contact plate for brace, releases
Put dead load internal force；After the completion of waiting for that bridge dead load all applies, bolt and punch are all changed to high-strength bolt fastening.
Further, the punch quantity is not more than the 30% of bolt quantity.
Further, the sum of brace and first segment contact plate junction are arranged bolt and punch quantity are no less than oval
The 1/3 of hole number.
Compared with prior art, the utility model has the beneficial effects that：
Multiple slotted holes are arranged in first segment contact plate, by brace and first node in the steel girder bridge structure of the utility model
Plate is connected at slotted hole by bolt, makes it that micro movement can occur at slotted hole in construction construction stage brace,
Lateral bracing shows the loading characteristic of K shape bracings, also just reduces being total to for bridge erection stage main truss and lateral bracing
Same-action substantially improves the stress of Steel Truss Beam structure.
In the method for the utility model, first brace and first segment contact plate are connected temporarily by bolt and punch, into
And make its brace in erection process that micro movement can occur at slotted hole, dead load stage lateral bracing can be discharged
Bolt and punch are then changed to high-strength bolt fastening again, reduce being total to for main truss and lateral bracing by rod piece internal force
Same-action avoids risk of the main truss because of generation of having an effect with lateral bracing.
By the structure and method of the utility model, the internal force of lateral bracing rod piece can be not only reduced, reduces rod piece
Material utilization amount, reduce project cost, moreover it is possible to reduce the outside power at main truss node, substantially reduce main truss gusset plate lamellar tearing
Risk.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is several layout pattern schematic diagrames of lateral bracing；
Fig. 2 is the position view that first segment contact plate is arranged in different types lateral bracing；
Fig. 3 is the steel girder bridge structural schematic diagram that the utility model intersects pattern lateral bracing；
Fig. 4 is the steel girder bridge structural schematic diagram of the utility model diamond pattern lateral bracing；
Fig. 5 is the steel girder bridge structural schematic diagram of the utility model triangle pattern lateral bracing；
Fig. 6 is the schematic cross-section of brace；
Fig. 7 is the A-A sectional views in Fig. 3-5；
Fig. 8 is C-C sectional views in Fig. 7；
Fig. 9 is the B-B sectional views in Fig. 3-5；
Figure 10 is D-D sectional views in Fig. 9；
Figure 11 is the first splice plate schematic diagram；
Figure 12 is the second splice plate schematic diagram；
Figure 13 is I schematic diagram of node internal partition；
Figure 14 is II schematic diagram of node internal partition；
Figure 15 is that schematic diagram at slotted hole is arranged in first segment contact plate；
Figure 16 is that schematic diagram at circular hole is arranged in second node plate；
In figure, 1 first main truss rod piece, 2 second main truss rod pieces, 3 cross bars, 4 braces, 5 first segment contact plates, 6 slotted holes, 7
Two gusset plates, 8 circular holes, 9 first splice plates, 10 circular holes, 11 second splice plates, 12 node internal partitions I, 13 slotted holes, 14 circular holes,
15 third splice plates, 16 the 4th splice plates, 17 node internal partitions II, 18 circular holes, 19 circular holes, 20 circular holes.
Specific implementation mode
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, steel girder bridge lateral bracing can not be reduced and main truss is total by existing in the prior art
The problem of same-action, in order to solve technical problem as above, present applicant proposes a kind of lateral bracings that can reduce to be total to main truss
The steel girder bridge structure and method of same-action.
The steel girder bridge structure of the utility model has three for three kinds of patterns of lateral bracing to first node Board position
Kind set-up mode, as shown in Fig. 2, being described respectively below for different types lateral bracing.
Embodiment 1：
In a kind of typical embodiment of the application, as shown in Fig. 3,6-16, a kind of longitudinal connection of energy reduction is provided
System and the coefficient steel girder bridge structure of main truss, the steel truss structure lateral bracing belong to intersection pattern, and structure includes
First main truss rod piece 1 and the second main truss rod piece 2, be connected between the first main truss rod piece 1 and the second main truss rod piece 2 perpendicular to
The cross bar 3 of the two, the first main truss rod piece 1 and the second main truss rod piece 2 are additionally provided with brace 4, and 4 both ends of the brace are solid
Due on gusset plate；The corresponding first segment contact plate of 4 one end of the brace 5 is provided with multiple slotted holes 6, is worn in slotted hole 6
First segment contact plate 5 is connect by bolt with brace 4；The corresponding second node plate in 4 the other end of the brace 7 is provided with multiple
Circular hole 8 wears high-strength bolt in circular hole 8 and fastens second node plate 7 and brace 4.
In the present embodiment, two braces 4 of setting are corresponded at chiasma type formula, 4 left part of brace in the first main truss rod piece 1
On, the brace 4 and 1 junction of the first main truss rod piece setting second node plate 7,4 right part of brace is corresponded in the second main truss rod piece 2
On, the brace 4 and 2 junction of the second main truss rod piece setting first segment contact plate 5；Another 4 left part of brace is corresponded in the second master
On boom part 2, the brace 4 and 2 junction of the second main truss rod piece setting second node plate 7,4 right part of brace is corresponded in the first master
On boom part 1, the brace 4 and 1 junction of the first main truss rod piece setting first segment contact plate 5.
The brace 4 is i-shape component.
The upper and lower ends face of the brace 4 is connect by the first splice plate 9 with first segment contact plate 5.
First splice plate 9 is equipped with multiple circular holes 10, and high-strength bolt is worn by first in circular hole corresponding with brace 4 10
Splice plate 9 and brace 4 connect；Circular hole 10 corresponding with first segment contact plate 5 and the slotted hole 6 of first segment contact plate 5 are correspondingly arranged, and
It is connected by bolt.
The middle part montant of the i-shape component passes through the second splice plate 11 and node internal partition (i.e. node internal partition I 12)
Connection, node internal partition I 12 are fixedly connected with first segment contact plate 5.
The node internal partition I 12 is equipped with multiple slotted holes 13, and bolt is worn by the second splice plate in slotted hole 13
11 connect with node internal partition I 12.
Second splice plate 11 is equipped with multiple circular holes 14, and high-strength bolt is worn in circular hole corresponding with middle part montant 14 will
Second splice plate 11 is connected with middle part montant；The slotted hole of corresponding with node internal partition I 12 circular hole 14 and node internal partition I 12
13 are correspondingly arranged, and are connected by bolt.
As shown in figs. 9-10, the upper and lower ends face of brace 4 is spliced by third for the cooperation of second node plate 7 and brace 4
Plate 15 is connect with second node plate 7.
The third splice plate 15 is equipped with multiple circular holes 19, and high-strength bolt is worn in circular hole corresponding with brace 4 19 by the
Three splice plates 15 and brace 4 connect；The circular hole 8 of circular hole 19 corresponding with second node plate 7 and second node plate 7 is correspondingly arranged,
Wear high-strength bolt fastening.
The middle part montant of the i-shape component is connect by the 4th splice plate 16 with node internal partition II 17, in node every
Plate II 17 is fixedly connected with second node plate 7.
The node internal partition II 17 is equipped with multiple circular holes 20, and the 4th splice plate 16 is equipped with multiple circular holes 18, perpendicular with middle part
High-strength bolt is worn in the corresponding circular hole of bar 18 to connect the 4th splice plate 16 with middle part montant；It is corresponding with node internal partition II 17
Circular hole 18 and the circular hole 20 of node internal partition II 17 be correspondingly arranged, and fastened by high-strength bolt.
Embodiment 2：
As shown in Fig. 4,6-16, which belongs to diamond pattern, first node in the embodiment
Plate 5 is fixed in cross bar 3, and first segment contact plate 5 is rectangle, and four corners of rectangle are all connected with brace to main truss rod piece, and first
Slotted hole is not set on the right side of gusset plate with brace junction, is used between setting circular hole and brace and is fixedly connected with form；First segment
, the connection of two braces and main truss rod piece first segment contact plate on the left of same as Example 1 with the type of attachment of brace on the left of contact plate
Form is same as Example 1.
Embodiment 3：
As shown in Fig. 5,6-16, which belongs to triangle pattern, 4 left part of brace and main truss bar
Part is connected using second node plate, and type of attachment is same as Example 1.Brace right part uses first node with main truss rod piece
Plate connects, and type of attachment is same as Example 1.
In the typical embodiment of another kind of the application, provides a kind of lateral bracing that can reduce and make jointly with main truss
The construction method of steel girder bridge structure, includes the following steps：
Each main truss rod piece, cross bar and brace are set up, second node plate is fixed on main truss rod piece, by second node plate and tiltedly
Bar is fixed by high-strength bolt, and first segment contact plate is fixed on main truss rod piece or cross bar, will be led between first segment contact plate and brace
It crosses bolt and punch connects temporarily；In erection process, micro movement can occur using bracing rod piece at slotted hole
Micro movement occurs at the slotted hole of first segment contact plate for feature, brace, discharges the dead load internal force of lateral bracing；Wait for that dead load is applied
Bolt and punch are all changed to high-strength bolt fastening after adding.
The construction of the high-strength bolt at the other positions of lateral bracing still uses normal process steps.
The sum of brace and the bolt of first segment contact plate junction setting and punch quantity no less than oval hole number
1/3 (be no less than high-strength bolt sum 1/3).
Bolt should not be less than 2, and should not tighten bolt and nut, keep bolt and node partly accepting and partly rejecting.
The punch quantity is not more than the 30% of bolt quantity.
Currently, the domestic flat vertical connection of steel truss continuous bridge is substantially connect using M24 high-strength bolts with main truss, bolt aperture
For 26mm；The length of lateral bracing, when slotted hole horizontal section length is 15mm, sets up rod length generally at 10~15 meters
Direction moves -7.5mm~7.5mm, then releasable stress is 210000 × 7.5/15000~210000 × 7.5/10000
=105~157.5MPa.In conjunction with the existing steel girder bridge structure construction in China, when slotted hole horizontal section length is in 10mm~15mm
When, it can substantially discharge the rod piece internal force of dead load stage lateral bracing.
The method of the utility model makes diamond shape, triangle, X-shape lateral bracing show K shapes connection in the construction stage
The loading characteristic of clone, to reduce the collective effect of bridge erection stage main truss and lateral bracing.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (8)
1. a kind of can reduce lateral bracing and the coefficient steel girder bridge structure of main truss, characterized in that including the first main truss
Rod piece and the second main truss rod piece, are connected with the cross bar perpendicular to the two between the first main truss rod piece and the second main truss rod piece,
The first main truss rod piece and the second main truss rod piece are additionally provided with brace, and the brace both ends are both secured on gusset plate；Institute
It states the corresponding first segment contact plate of brace one end and is provided with multiple slotted holes, bolt is worn in slotted hole by first segment contact plate
It is connect with brace；The corresponding second node plate in described brace the other end is provided with multiple circular holes, and high-strength bolt is worn in circular hole
Second node plate and brace are fastened.
2. steel girder bridge structure as described in claim 1, characterized in that the brace is i-shape component；The brace
Upper and lower ends face is connect by the first splice plate with first segment contact plate.
3. steel girder bridge structure as claimed in claim 2, characterized in that first splice plate is equipped with multiple circular holes, and oblique
High-strength bolt is worn in the corresponding circular hole of bar to connect the first splice plate with brace；Circular hole corresponding with first segment contact plate and first
The slotted hole of gusset plate is correspondingly arranged, and is connected by bolt.
4. steel girder bridge structure as claimed in claim 2, characterized in that the middle part montant of the i-shape component passes through second
Splice plate is connect with node internal partition, and the node internal partition is fixedly connected with first segment contact plate.
5. steel girder bridge structure as claimed in claim 4, characterized in that the node internal partition is equipped with multiple slotted holes, long
Bolt is worn in circular hole to connect the second splice plate with node internal partition.
6. steel girder bridge structure as claimed in claim 5, characterized in that second splice plate is equipped with multiple circular holes, in
High-strength bolt is worn in the corresponding circular hole of portion's montant to connect the second splice plate with middle part montant；Circle corresponding with node internal partition
The slotted hole of hole and node internal partition is correspondingly arranged, and is connected by bolt.
7. steel girder bridge structure as described in claim 1, characterized in that the first segment contact plate and the first main truss rod piece or the
Two main truss rod pieces or cross bar are fixedly connected.
8. steel girder bridge structure as described in claim 1, characterized in that the second node plate and the first main truss rod piece or
Two main truss rod pieces are fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820267456.8U CN207919312U (en) | 2018-02-24 | 2018-02-24 | Lateral bracing and the coefficient steel girder bridge structure of main truss can be reduced |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820267456.8U CN207919312U (en) | 2018-02-24 | 2018-02-24 | Lateral bracing and the coefficient steel girder bridge structure of main truss can be reduced |
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| CN207919312U true CN207919312U (en) | 2018-09-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374321A (en) * | 2018-02-24 | 2018-08-07 | 山东省交通规划设计院 | Lateral bracing and the coefficient steel girder bridge structure of main truss and method can be reduced |
-
2018
- 2018-02-24 CN CN201820267456.8U patent/CN207919312U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374321A (en) * | 2018-02-24 | 2018-08-07 | 山东省交通规划设计院 | Lateral bracing and the coefficient steel girder bridge structure of main truss and method can be reduced |
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Address after: 250031 Shandong Province Flyover District of Ji'nan city Shanxi Road No. 576. Patentee after: Shandong transportation planning and Design Institute Co.,Ltd. Address before: 250031 Shandong Province Flyover District of Ji'nan city Shanxi Road No. 576. Patentee before: SHANDONG PROVINCIAL COMMUNICATIONS PLANNING AND DESIGN INSTITUTE |
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Address after: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Patentee after: Shandong transportation planning and Design Institute Group Co.,Ltd. Address before: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Patentee before: Shandong transportation planning and Design Institute Co.,Ltd. |