CN206956530U - A kind of concrete-filled steeltubewith dumbbell sections arch rib - Google Patents
A kind of concrete-filled steeltubewith dumbbell sections arch rib Download PDFInfo
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- CN206956530U CN206956530U CN201720911119.3U CN201720911119U CN206956530U CN 206956530 U CN206956530 U CN 206956530U CN 201720911119 U CN201720911119 U CN 201720911119U CN 206956530 U CN206956530 U CN 206956530U
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Abstract
The utility model discloses a kind of concrete-filled steeltubewith dumbbell sections arch rib, belong to CFST Arch Bridge technical field.Including the first body, the second body, web and concrete：First body section is in closed circular；Second body section is in closed circular, is placed in parallel with the first body, different from the first body section and/or wall thickness；Web quantity is two, and side by side parallel is placed, and web both sides connect the first outer surface of tube body and the second outer surface of tube body, the section constitution dumb-bell shape of the first body, the second body and web three respectively；Concrete：It is filled in the first body and the second body, and is filled in the closed channel that the first body, the second body and web three are formed respectively.Steel pipe equal thickness, the equal diameter because of concrete-filled steeltubewith dumbbell sections arch rib are avoided, and causes the waste of material and the irrational problem of stress.
Description
Technical field
CFST Arch Bridge technical field is the utility model is related to, particularly a kind of concrete-filled steeltubewith dumbbell sections arch
Rib.
Background technology
CFST Arch Bridge has many advantages, such as compression strength is high, economical and beautiful, easy for construction, from nineteen ninety first
Since seat Dumbbell-shaped CFST Arch Bridge-Sichuan Wangcang bridge is built up, the CFST Arch Bridge in China has obtained rapidly
Development, according to《CFST Arch Bridge》Counted in the third edition, end in January, 2015, Dumbbell-shaped CFST Arch Bridge is existing
More than 200 seats, account for the half of CFST Arch Bridge sum.Concrete-filled steel tube with dumbbell sections is by upper and lower concrete filled steel tube and company
Connect the abdominal cavity composition of lower concrete filled steel tube.However, substantial amounts of engineering practice shows, in traditional concrete-filled steel tube with dumbbell sections
Upper and lower concrete filled steel tube, the overwhelming majority is equal thickness, isodiametric concrete filled steel tube, due to concrete-filled steel tube with dumbbell sections
In arch bridge, the stress of upper and lower concrete filled steel tube is typically different, using common load case-entirely across evenly load as
Example, the stress of the second body is typically larger than the first body stress, and vault, using moment of flexure as important internal force, the first body cuts to be dangerous
Face；And arch springing, then based on axle power, the second body is dangerouse cross-section.Thus, on the premise of ensureing that structure is safe and reliable, knot
Structure is using equal thickness, isodiametric concrete filled steel tube by the waste for causing steel and the discontinuity of structure, unreasonable.Mesh
Before, there has been no the research that related ends carried out correlation, it is therefore proposed that round steel pipe coagulation above and below a kind of concrete-filled steel tube with dumbbell sections
The native not Novel dumbbell such as equal thickness, non-equal diameter shaped steel pipe concrete so that dumbbell shape rib structure is in loading process, up and down
Two concrete filled steel tube uniform forces, so as to avoid the waste of material.
Utility model content
Goal of the invention of the present utility model is, in view of the above-mentioned problems, providing a kind of concrete-filled steeltubewith dumbbell sections arch
Rib, avoid steel pipe equal thickness, equal diameter because of concrete-filled steeltubewith dumbbell sections arch rib, and cause material waste and stress not
The problem of reasonable.
To reach above-mentioned purpose, technical scheme is used by the utility model：A kind of concrete-filled steeltubewith dumbbell sections
Arch rib, it is characterised in that：Including the first body：Section is in closed circular；Second body：Section is in closed circular, with described
One body is placed in parallel, different from the first body section and/or wall thickness；Web quantity is two, and side by side parallel is placed, web
Both sides connect first outer surface of tube body and the second outer surface of tube body, first body, the second body and web three respectively
The section constitution dumb-bell shape of person；Concrete：It is filled in respectively in first body and the second body, and is filled in described
In the closed channel that one body, the second body and web three are formed.
First, the FEM model of concrete-filled steel tube with dumbbell sections structure is established by finite element software, then passes through difference
Load case, the parameter comparison such as ratio of rise to span, determine shape, the wall thickness of the body of concrete-filled steel tube with dumbbell sections first and the second body
And size, the first body and the second body are connected by web, and many places fill concrete reaches reasonable distribution stress problem,
Avoid the effect of the waste of material.
Further, first body and the second body are cylinder, and the first body caliber is less than described the
Two body calibers.
Further, first body and the second body are cylinder, and the first body pipe thickness is less than institute
State the second body pipe thickness.
Further, first body and the second body are cylinder, and the first body caliber is less than described the
Two body calibers, the first body pipe thickness are more than the second body pipe thickness.
Further, first body and the second body are elliptical cylinder-shape, and first body and the second body are short
Footpath is identical, and the first body major diameter is less than the second body major diameter.
Further, first body and the second body are elliptical cylinder-shape, and the first body pipe thickness is less than
The second body pipe thickness.
Further, first body and the second body are elliptical cylinder-shape, and the first body tube wall major diameter is less than
The second body major diameter, but the first body pipe thickness is more than the second body pipe thickness.It is further square using above-mentioned six
The beneficial effect of case is：The FEM model of concrete-filled steel tube with dumbbell sections structure is established by finite element software, is then passed through
The parameter comparisons such as different load case, ratio of rise to span, determine the body of concrete-filled steel tube with dumbbell sections first and the second body wall thickness,
Size and shape, reach optimization arch rib stress, save the effect of material.
Further, it is being provided with that some both ends are connected with two parallel webs medial surface center lines respectively between the web plus
Strength plate, relatively described web medial surface is vertical respectively at the stiffener both ends, and the stiffener is parallel to each other and proper alignment.
Beneficial effect using above-mentioned further scheme is：Stiffener can not only reduce stress concentration and bring not
Profit influences, and the generation of pipe explosion accident is reduced or avoided, while also can effectively prevent web from, because stress is excessive, causing Buckling of Web
The problems such as generation.
Due to being had the advantages that using above-mentioned technical proposal, the utility model：
1. the utility model establishes the FEM model of concrete-filled steel tube with dumbbell sections structure, Ran Houtong by finite element software
The parameter comparisons such as different load cases, ratio of rise to span are crossed, determine the shape of the body of concrete-filled steel tube with dumbbell sections first and the second body
Shape, wall thickness and size, the first body and the second body are connected by web, and many places fill concrete reach reasonable distribution by
Power problem, avoid the effect of the waste of material.
2. Buckling of Web can be both reduced or avoided by being provided with stiffener in the utility model, it can avoid or reduce again
The generation of pipe explosion accident；
3. the utility model is simple in construction, operation degree-of-difficulty factor is very low, cost of labor bottom.
Brief description of the drawings
Fig. 1 is the cross-sectional view of the utility model embodiment 1.
Fig. 2 is the cross-sectional view of the utility model embodiment 2.
Fig. 3 is the cross-sectional view of the utility model embodiment 3.
Fig. 4 is the cross-sectional view of the utility model embodiment 4.
Fig. 5 is the cross-sectional view of the utility model embodiment 5.
Fig. 6 is the cross-sectional view of the utility model embodiment 6.
In accompanying drawing, the round steel pipes of 1- first, the round steel pipes of 2- second, 3- webs, 4- concrete, 5- stiffeners, 6- first are oval
Steel pipe, the elliptic steel pipes of 7- second.
Embodiment
Embodiment 1
As shown in figure 1, concrete-filled steeltubewith dumbbell sections arch rib, including the first round steel pipe 1, the second round steel pipe 2, web 3
With concrete 4；The section of first round steel pipe 1 is in closed circular；The section of second round steel pipe 2 is in closed circular, flat with the first round steel pipe 1
Row is placed, different from the wall thickness of the first round steel pipe 1；The quantity of web 3 is two, and both sides respectively with the outer surface of the first round steel pipe 1 and the
The outer surface of two round steel pipe 2 connects, the section constitution dumb-bell shape of the first round steel pipe 1, the second round steel pipe 2 and the three of web 3；Concrete
4：It is filled in respectively in the first round steel pipe 1 and the second round steel pipe 2, and is filled in the first round steel pipe 1, the second round steel pipe 2 and abdomen
In the closed channel that the three of plate 3 is formed；Some both ends are provided between web 3 respectively with the medial surface center line of two parallel webs 3 to connect
The stiffener 5 connect, the both ends of the stiffener 5 difference medial surface of opposite webs 3 is vertical, and stiffener 5 is parallel to each other and proper alignment.
Embodiment 2
As shown in Fig. 2 concrete-filled steeltubewith dumbbell sections arch rib, including the first round steel pipe 1, the second round steel pipe 2, web 3
With concrete 4；The section of first round steel pipe 1 is in closed circular；The section of second round steel pipe 2 is in closed circular, flat with the first round steel pipe 1
Row is placed, different from the diameter of the first round steel pipe 1；The quantity of web 3 be two, and both sides respectively with the outer surface of the first round steel pipe 1
Connected with the outer surface of the second round steel pipe 2, the section constitution dumb-bell shape of the first round steel pipe 1, the second round steel pipe 2 and the three of web 3；It is mixed
Solidifying soil 4：It is filled in respectively in the first round steel pipe 1 and the second round steel pipe 2, and is filled in the first round steel pipe 1, the second round steel pipe 2
In the closed channel formed with the three of web 3；Be provided between web 3 some both ends respectively with the medial surface of two parallel webs 3
The stiffener 5 of line connection, the both ends of the stiffener 5 difference medial surface of opposite webs 3 is vertical, and stiffener 5 is parallel to each other and proper alignment.
Embodiment 3
As shown in figure 3, concrete-filled steeltubewith dumbbell sections arch rib, including the first round steel pipe 1, the second round steel pipe 2, web 3
With concrete 4；The section of first round steel pipe 1 is in closed circular；The section of second round steel pipe 2 is in closed circular, flat with the first round steel pipe 1
Row is placed, different from the diameter of the first round steel pipe 1 and wall thickness；The quantity of web 3 be two, and both sides respectively with the first round steel pipe
1 outer surface connects with the outer surface of the second round steel pipe 2, and the section constitution of the first round steel pipe 1, the second round steel pipe 2 and the three of web 3 is mute
It is bell-shaped；Concrete 4：It is filled in respectively in the first round steel pipe 1 and the second round steel pipe 2, and is filled in the first round steel pipe 1, second
In the closed channel that round steel pipe 2 and the three of web 3 are formed；Be provided between web 3 some both ends respectively with two parallel webs 3
The stiffener 5 of side center line connection, the both ends of the stiffener 5 difference medial surface of opposite webs 3 is vertical, and stiffener 5 is parallel to each other and whole
Neat arrangement.
Embodiment 4
As shown in figure 4, concrete-filled steeltubewith dumbbell sections arch rib, including the first elliptic steel pipe 6, the second elliptic steel pipe 7, abdomen
Plate 3 and concrete 4；The section of first elliptic steel pipe 6 is in closed circular；The section of second elliptic steel pipe 7 is in closed circular, ellipse with first
Round steel pipe 6 is placed in parallel, different from the wall thickness of the first elliptic steel pipe 6；The quantity of web 3 be two, and both sides respectively with the first oval steel
The outer surface of pipe 6 connects with the outer surface of the second elliptic steel pipe 7, the first elliptic steel pipe 6, the second elliptic steel pipe 7 and section of the three of web 3
Face forms dumb-bell shape；Concrete 4：It is filled in respectively in the first elliptic steel pipe 6 and the second elliptic steel pipe 7, and is filled in first
In the closed channel that elliptic steel pipe 6, the second elliptic steel pipe 7 and the three of web 3 are formed；Some both ends point are provided between web 3
The stiffener 5 not being connected with the medial surface center line of two parallel webs 3, the both ends of the stiffener 5 difference medial surface of opposite webs 3 is vertical, adds
Strength plate 5 is parallel to each other and proper alignment.
Embodiment 5
As shown in figure 5, concrete-filled steeltubewith dumbbell sections arch rib, including the first elliptic steel pipe 6, the second elliptic steel pipe 7, abdomen
Plate 3 and concrete 4；The section of first elliptic steel pipe 6 is in closed circular；The section of second elliptic steel pipe 7 is in closed circular, ellipse with first
Round steel pipe 6 is placed in parallel, different from the major diameter of the first elliptic steel pipe 6；The quantity of web 3 be two, and both sides respectively with the first oval steel
The outer surface of pipe 6 connects with the outer surface of the second elliptic steel pipe 7, the first elliptic steel pipe 6, the second elliptic steel pipe 7 and section of the three of web 3
Face forms dumb-bell shape；Concrete 4：It is filled in respectively in the first elliptic steel pipe 6 and the second elliptic steel pipe 7, and is filled in first
In the closed channel that elliptic steel pipe 6, the second elliptic steel pipe 7 and the three of web 3 are formed；Some both ends point are provided between web 3
The stiffener 5 not being connected with the medial surface center line of two parallel webs 3, the both ends of the stiffener 5 difference medial surface of opposite webs 3 is vertical, adds
Strength plate 5 is parallel to each other and proper alignment.
Embodiment 6
As shown in fig. 6, concrete-filled steeltubewith dumbbell sections arch rib, including the first elliptic steel pipe 6, the second elliptic steel pipe 7, abdomen
Plate 3 and concrete 4；The section of first elliptic steel pipe 6 is in closed circular；The section of second elliptic steel pipe 7 is in closed circular, ellipse with first
Round steel pipe 6 is placed in parallel, different from the major diameter of the first elliptic steel pipe 6 and wall thickness；The quantity of web 3 is two, and both sides are respectively with the
The outer surface of one elliptic steel pipe 6 connects with the outer surface of the second elliptic steel pipe 7, the first elliptic steel pipe 6, the second elliptic steel pipe 7 and web 3
The section constitution dumb-bell shape of three；Concrete 4：It is filled in the first elliptic steel pipe 6 and the second elliptic steel pipe 7, and fills out respectively
Fill in the closed channel formed in the first elliptic steel pipe 6, the second elliptic steel pipe 7 and the three of web 3；If it is provided between web 3
The stiffener 5 that dry both ends are connected with the medial surface center line of two parallel webs 3 respectively, the both ends of the stiffener 5 difference medial surface of opposite webs 3
Vertically, stiffener 5 is parallel to each other and proper alignment.
Described above is the detailed description for the preferable possible embodiments of the utility model, but embodiment is not limited to
Patent claim of the present utility model, the equal change or modification completed under the technical spirit suggested by all the utility model
Change, all should belong to the utility model and cover the scope of the claims.
Claims (7)
- A kind of 1. concrete-filled steeltubewith dumbbell sections arch rib, it is characterised in that：IncludingFirst body：Section is in closed circular；Second body：Section is in closed circular, is placed in parallel with first body, with the first body section and/or wall It is thick different；Web：Quantity is two, and side by side parallel is placed, and web both sides connect outside first outer surface of tube body and the second body respectively Surface, first body, the second body and the section constitution dumb-bell shape of web three；Concrete：It is filled in respectively in first body and the second body, and is filled in first body, the second body In the closed channel formed with web three.
- A kind of 2. concrete-filled steeltubewith dumbbell sections arch rib according to claim 1, it is characterised in that：First body and the second body are cylinder, and the first body caliber is less than the second body caliber.
- A kind of 3. concrete-filled steeltubewith dumbbell sections arch rib according to claim 1, it is characterised in that：First body and the second body are cylinder, and the first body pipe thickness is less than the second body tube wall Thickness.
- A kind of 4. concrete-filled steeltubewith dumbbell sections arch rib according to claim 1, it is characterised in that：First body and the second body are cylinder, and the first body caliber is less than the second body caliber, institute State the first body pipe thickness and be more than the second body pipe thickness.
- A kind of 5. concrete-filled steeltubewith dumbbell sections arch rib according to claim 1, it is characterised in that：First body and the second body are elliptical cylinder-shape, and the first body pipe thickness is less than the second body pipe Wall thickness.
- A kind of 6. concrete-filled steeltubewith dumbbell sections arch rib according to claim 1, it is characterised in that：First body and the second body are elliptical cylinder-shape, and first body and the second body minor axis are identical, and described One body major diameter is less than the second body major diameter.
- 7. according to a kind of any described concrete-filled steeltubewith dumbbell sections arch ribs of claim 1-6, it is characterised in that：The stiffener that some both ends are connected with two parallel webs medial surface center lines respectively is provided between the web, it is described to put more energy into Relatively described web medial surface is vertical respectively at plate both ends, and the stiffener is parallel to each other and proper alignment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720911119.3U CN206956530U (en) | 2017-07-26 | 2017-07-26 | A kind of concrete-filled steeltubewith dumbbell sections arch rib |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720911119.3U CN206956530U (en) | 2017-07-26 | 2017-07-26 | A kind of concrete-filled steeltubewith dumbbell sections arch rib |
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| CN206956530U true CN206956530U (en) | 2018-02-02 |
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| CN201720911119.3U Expired - Fee Related CN206956530U (en) | 2017-07-26 | 2017-07-26 | A kind of concrete-filled steeltubewith dumbbell sections arch rib |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677762A (en) * | 2018-06-14 | 2018-10-19 | 无锡市航道工程有限公司 | Concrete-filled steel tube tied arch arch springing crack comprehensive treatment structure |
-
2017
- 2017-07-26 CN CN201720911119.3U patent/CN206956530U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677762A (en) * | 2018-06-14 | 2018-10-19 | 无锡市航道工程有限公司 | Concrete-filled steel tube tied arch arch springing crack comprehensive treatment structure |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 530200 No.21 Pingle Avenue, Liangqing District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: GUANGXI ROAD AND BRIDGE ENGINEERING GROUP Co.,Ltd. Address before: 530011 No. 17 Zhonghua Road, the Guangxi Zhuang Autonomous Region, Nanning Patentee before: GUANGXI ROAD AND BRIDGE ENGINEERING GROUP Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 Termination date: 20210726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |