CN207003213U - The fulcrum connecting structure of spatial steel tube-truss bridge - Google Patents
The fulcrum connecting structure of spatial steel tube-truss bridge Download PDFInfo
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- CN207003213U CN207003213U CN201720911820.5U CN201720911820U CN207003213U CN 207003213 U CN207003213 U CN 207003213U CN 201720911820 U CN201720911820 U CN 201720911820U CN 207003213 U CN207003213 U CN 207003213U
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- web member
- otic placode
- lower boom
- diagonal web
- axis
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Abstract
The utility model discloses a kind of fulcrum connecting structure of spatial steel tube-truss bridge, including：Seat board, lower boom, perpendicular web member, diagonal web member, transverse connecting rod, gusset plate and otic placode；Described seat board is arranged at holder top, and described seat board upper level is provided with lower boom；Perpendicular web member and diagonal web member are provided with above described lower boom, and make the axis of lower boom vertical with the axis of perpendicular web member, the diagonal web member includes being symmetricly set in left diagonal web member and the right diagonal web member at left and right sides of perpendicular web member, axis of the axial direction of the left diagonal web member and right diagonal web member respectively with perpendicular web member is formed angle α.The fulcrum connecting structure of spatial steel tube-truss bridge described in the utility model, it is simple in construction, steel using amount is few, large carrying capacity, the more gentle smooth-going of the transmission of power, the stress concentration degree of node is reduced, improves the security of structure, effectively improves welding node caused fatigue problem under dynamic load function.
Description
Technical field
It the utility model is related to crane span structure field, a kind of fulcrum connecting structure of spatial steel tube-truss bridge.
Background technology
Truss：A kind of structure being hinged each other at both ends by rod member.The general tool that truss is made up of straight-bar
There are the plane or space structure of triangular element, truss member is primarily subjected to axial tension or pressure, so as to make full use of material
The intensity of material, material is saved than solid web girder when span is larger, mitigate deadweight and increase rigidity.
At present, at home, the crane span structure for driving is mostly hollow steel ball welding node and welded K-joint of steel tubular.
But its fastener for connection method, structure easily produce node stress concentration, the strength and stability of node center compared with
Difference, fatigue problem is easily produced under dynamic load function.
Utility model content
According to technical problem set forth above, and a kind of fulcrum connecting structure of spatial steel tube-truss bridge is provided, for solving
Certainly existing fastener for connection method, structure easily produce node stress concentration, and the strength and stability of node center is poor, dynamic
The shortcomings that fatigue problem is easily produced under power load action.The technological means that the utility model uses is as follows：
A kind of fulcrum connecting structure of spatial steel tube-truss bridge, including：Seat board, lower boom, perpendicular web member, diagonal web member, transverse direction
Connecting rod, gusset plate and otic placode；Described seat board is arranged at holder top, and described seat board upper level is provided with lower boom；
Perpendicular web member and diagonal web member are provided with above described lower boom, and makes the axis of lower boom vertical with the axis of perpendicular web member, institute
Stating diagonal web member includes being symmetricly set in left diagonal web member and the right diagonal web member at left and right sides of perpendicular web member, makes the left diagonal web member and the right side oblique
Axis of the axial direction of web member respectively with perpendicular web member forms angle α；The side of the lower boom is provided with transverse connecting rod；Under described
The otic placode profile groove perpendicular to the lower edge rod axis is machined with chord member, transverse connecting rod and perpendicular web member, in the otic placode profile groove
Insertion otic placode is welded and fixed, and described lower boom is fixed on by otic placode on seat board；The lower boom, perpendicular web member, left oblique abdomen
It is machined with node profile groove on bar and right diagonal web member, the same lower boom of the node profile groove, perpendicular web member, left diagonal web member and right diagonal web member
Axis is in the same plane, and the node profile groove interpolation ingress plate weld is fixed.
The axis of lower boom is provided with three as preferably described otic placode, respectively otic placode I, otic placode II and ear
Plate III；Described otic placode I is arranged at centre, and the plane where it overlaps with the axis of perpendicular web member, described otic placode II and
Otic placode III is set in parallel in the otic placode I left and right sides.
The dividing plate for strengthening fulcrum bonding strength, the same institute of dividing plate are internally provided with as preferably described lower boom
Lower edge rod axis are stated to be vertically arranged.
It is H profile steel as preferably described transverse connecting rod.
Pass through semicircle groove, circle as the gusset plate top preferably between the perpendicular web member outer wall and the left diagonal web member outer wall
Arc is excessive；Gusset plate top between the perpendicular web member outer wall and the right diagonal web member outer wall is excessive by semicircle groove, circular arc.
Compared with prior art, the fulcrum connecting structure of spatial steel tube-truss bridge described in the utility model, lower boom,
The otic placode profile groove perpendicular to the lower edge rod axis is machined with transverse connecting rod and perpendicular web member, otic placode profile groove interpolation enters otic placode weldering
Connect fixation；Node profile groove, node profile groove interpolation ingress plate are machined with lower boom, perpendicular web member, left diagonal web member and right diagonal web member
It is welded and fixed, effectively solves the problems, such as that existing fastener for connection method node stress is concentrated, there is provided the position of bearing is set
Put, ensure that node center vertical section has enough intensity and stability, be a kind of full welding And of Varying Depth for being used to drive a vehicle
Hold the fulcrum connecting structure of formula continuous steel pipe truss-type bridges.
The fulcrum connecting structure of spatial steel tube-truss bridge described in the utility model, simple in construction, steel using amount is few, carries energy
Power is big, the more gentle smooth-going of transmission of power, reduces the stress concentration degree of node, improves the security of structure, effectively
Improve welding node caused fatigue problem under dynamic load function.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is front view of the present utility model.
Fig. 2 is side view of the present utility model.
Wherein：1st, seat board, 2, lower boom, 3, perpendicular web member, 4, left diagonal web member, 5, right diagonal web member, 6, transverse connecting rod, 7, section
Point plate, 8, dividing plate, 9, otic placode I, 10, otic placode II, 11, otic placode III.
Embodiment
As depicted in figs. 1 and 2, a kind of fulcrum connecting structure of spatial steel tube-truss bridge, including：Seat board 1, lower boom 2, erect
Web member 3, diagonal web member, transverse connecting rod 6, gusset plate 7 and otic placode；Described seat board 1 is arranged at holder top, described seat board 1
Upper level is provided with lower boom 2；The described top of lower boom 2 is provided with perpendicular web member 3 and diagonal web member, and makes lower boom 2
Axis is vertical with the axis of perpendicular web member 3, and the diagonal web member includes being symmetricly set in the He of left diagonal web member 4 of the perpendicular left and right sides of web member 3
Right diagonal web member 5, axis of the axial direction of the left diagonal web member 4 and right diagonal web member 5 respectively with perpendicular web member 3 is set to form angle α；Under described
The side of chord member 2 is provided with transverse connecting rod 6；Described transverse connecting rod 6 is H profile steel.
The otic placode being machined with the lower boom 2, transverse connecting rod 6 and perpendicular web member 3 perpendicular to the axis of lower boom 2 cuts open
Groove, the pleasant plate weld of otic placode profile groove interpolation are fixed, and described lower boom 2 is fixed on by otic placode on seat board 1；Described
Otic placode is provided with three perpendicular to the axis of lower boom 2, respectively otic placode I9, otic placode II10 and otic placode III11；Described otic placode
I9 is arranged at centre, and the plane where it overlaps with the axis of perpendicular web member 3, and described otic placode II10 and otic placode III11 are put down
Row is arranged at the otic placode I9 left and right sides.
Node profile groove, the node profile groove are machined with the lower boom 2, perpendicular web member 3, left diagonal web member 4 and right diagonal web member 5
Axis with lower boom 2, perpendicular web member 3, left diagonal web member 4 and right diagonal web member 5 is in the same plane, is inserted in the node profile groove
Gusset plate 7 is welded and fixed.Effectively solve the problems, such as that existing fastener for connection method node stress is concentrated, there is provided branch is set
The position of seat, ensure that node center vertical section has enough intensity and stability.
Described lower boom 2 is internally provided with the dividing plate 8 for strengthening fulcrum bonding strength, and the dividing plate 8 is the same as under described
The axis of chord member 2 is vertically arranged.The top of gusset plate 7 between the outer wall of perpendicular web member 3 and the outer wall of left diagonal web member 4 is recessed by semicircle
Groove, circular arc are excessive；The top of gusset plate 7 between the outer wall of perpendicular web member 3 and the outer wall of right diagonal web member 5 passes through semicircle groove, circle
Arc is excessive.Simple in construction, steel using amount is few, large carrying capacity, the more gentle smooth-going of transmission of power, reduces the stress concentration of node
Degree, the security of structure is improved, effectively improve welding node caused fatigue problem under dynamic load function.
The fulcrum connecting structure of spatial steel tube-truss bridge described in the utility model, lower boom 2 is local, web member and transverse direction connect
The end of extension bar 6 is provided with profile groove, and gusset plate 7 and otic placode insertion are opened in profile groove, erect abdomen, 3, diagonal web member and transverse connecting rod 6 are opened and passed through
Mouth is welded to connect with lower boom 2 by certain inclined angle；Gusset plate 7 is special-shaped junction steel plate, with otic placode, dividing plate 8 and lower boom 2
Welded into the cross-fixing of " ten " word, by perpendicular web member 3, diagonal web member, transverse connecting rod 6, lower boom 2 and otic placode, dividing plate 8, seat board 1
It is welded into the entirety of node connection.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (5)
- A kind of 1. fulcrum connecting structure of spatial steel tube-truss bridge, it is characterised in that including：Seat board, lower boom, perpendicular web member, oblique abdomen Bar, transverse connecting rod, gusset plate and otic placode；Described seat board is arranged at holder top, and described seat board upper level is provided with lower boom；Perpendicular web member and diagonal web member are provided with above described lower boom, and the axis of lower boom is hung down with the axis of perpendicular web member Directly, the diagonal web member includes being symmetricly set in left diagonal web member and the right diagonal web member at left and right sides of perpendicular web member, makes the left diagonal web member Axial direction with right diagonal web member is respectively the same as the axis formation angle α of perpendicular web member；The side of the lower boom is provided with transverse connecting rod；The otic placode profile groove perpendicular to the lower edge rod axis is machined with the lower boom, transverse connecting rod and perpendicular web member, it is described The pleasant plate weld of otic placode profile groove interpolation is fixed, and described lower boom is fixed on by otic placode on seat board；Node profile groove, the same lower edge of node profile groove are machined with the lower boom, perpendicular web member, left diagonal web member and right diagonal web member Bar, the axis of perpendicular web member, left diagonal web member and right diagonal web member are in the same plane, the node profile groove interpolation ingress plate weld It is fixed.
- 2. the fulcrum connecting structure of spatial steel tube-truss bridge according to claim 1, it is characterised in that：Described otic placode is provided with three perpendicular to the axis of lower boom, respectively otic placode I, otic placode II and otic placode III；Described otic placode I is arranged at centre, and the plane where it overlaps with the axis of perpendicular web member, described otic placode II and ear Plate III is set in parallel in the otic placode I left and right sides.
- 3. the fulcrum connecting structure of spatial steel tube-truss bridge according to claim 1, it is characterised in that：Described lower boom is internally provided with the dividing plate for strengthening fulcrum bonding strength, and the dividing plate is the same as the lower edge rod axis It is vertically arranged.
- 4. the fulcrum connecting structure of the spatial steel tube-truss bridge according to claim 1,2 or 3, it is characterised in that：Described transverse connecting rod is H profile steel.
- 5. the fulcrum connecting structure of the spatial steel tube-truss bridge according to claim 1,2 or 3, it is characterised in that：Gusset plate top between the perpendicular web member outer wall and the left diagonal web member outer wall is excessive by semicircle groove, circular arc；It is described Perpendicular gusset plate top between web member outer wall and the right diagonal web member outer wall is excessive by semicircle groove, circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720911820.5U CN207003213U (en) | 2017-07-25 | 2017-07-25 | The fulcrum connecting structure of spatial steel tube-truss bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720911820.5U CN207003213U (en) | 2017-07-25 | 2017-07-25 | The fulcrum connecting structure of spatial steel tube-truss bridge |
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| CN207003213U true CN207003213U (en) | 2018-02-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021535A (en) * | 2019-12-26 | 2020-04-17 | 中国矿业大学 | Aluminum alloy truss integration node connecting component |
| CN111639372A (en) * | 2020-05-11 | 2020-09-08 | 中铁大桥勘测设计院集团有限公司 | Design method of variable-height truss bending node structure |
-
2017
- 2017-07-25 CN CN201720911820.5U patent/CN207003213U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021535A (en) * | 2019-12-26 | 2020-04-17 | 中国矿业大学 | Aluminum alloy truss integration node connecting component |
| CN111639372A (en) * | 2020-05-11 | 2020-09-08 | 中铁大桥勘测设计院集团有限公司 | Design method of variable-height truss bending node structure |
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