CN107988907A - A kind of anchor of suspension cable and concrete girder - Google Patents
A kind of anchor of suspension cable and concrete girder Download PDFInfo
- Publication number
- CN107988907A CN107988907A CN201711451025.3A CN201711451025A CN107988907A CN 107988907 A CN107988907 A CN 107988907A CN 201711451025 A CN201711451025 A CN 201711451025A CN 107988907 A CN107988907 A CN 107988907A
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- Prior art keywords
- anchor
- plate
- stay cable
- plates
- concrete girder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004567 concrete Substances 0.000 title claims abstract description 32
- 239000000725 suspension Substances 0.000 title claims abstract 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000004873 anchoring Methods 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 17
- 238000010276 construction Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of anchor of suspension cable and concrete girder, including：Steel anchor box and two pieces of anchor tie plates for being both provided with through hole；Wherein, the oblique pull cable guide pipe passed through for suspension cable is equipped with the steel anchor box, the steel anchor box is fixed between two pieces of anchor tie plates；Two pieces of anchor tie plates are parallel with the suspension cable axis；Two pieces of anchor tie plates are connected by PBL shear connectors through through hole with concrete girder.The anchor of suspension cable and concrete girder provided by the invention, realizes and suspension cable is anchored above bridge floor, changes traditional anchorage style in beam bottom or case, has the advantages that power transmission is smooth, easy for construction, maintenance is easy, durable reliable.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to an anchoring device for a stay cable and a concrete girder.
Background
The design and construction technology of the cable-stayed bridge is continuously innovated and developed, and the large-span concrete cable-stayed bridge and the mixed beam cable-stayed bridge are gradually increased. The cable-beam anchoring connection is an important structure for transferring the load of a beam body to a stay cable, requires smooth force transfer, simple structure, convenient installation and maintenance and the like, and is a key technical problem of design.
The cable beam anchoring block type of the existing concrete main beam cable-stayed bridge mainly comprises a beam bottom anchoring block structure and an in-box anchoring block structure.
The beam bottom anchor block structure is adopted, and the following problems exist: the conduit of the cable is long and needs to pass through the longitudinal web, affecting the effective section of the longitudinal web; the conduit influences the continuity of the main stressed steel bar of the box girder; difficulty in catheter positioning; the anchor head is at the bottom of the beam, so that the installation and the maintenance are inconvenient. By adopting the in-box anchor block structure, the following problems exist: the conduit of the cable penetrates through the top plate of the box girder to influence the effective section of the top plate; the conduit influences the continuity of the main stressed steel bar of the box girder; difficulty in catheter positioning; the force transmission is complex, and eccentric load is generated on the longitudinal web; the anchor head is in the roof beam, inconvenient installation and maintenance.
Disclosure of Invention
In order to overcome at least partially the above problems of the prior art, the present invention provides an anchoring device for a stay cable and a concrete girder.
The invention provides an anchoring device for a stay cable and a concrete girder, which comprises: the steel anchor box and the two anchor plates are provided with through holes; the steel anchor box is fixedly connected between the two anchor plates; the two anchor plates are parallel to the axial line of the stay cable; and the two anchor plates penetrate through the through hole through the PBL shear key to be connected with the concrete girder.
And the distances between the anchoring points of the stay cables and the two anchor pull plates are equal.
The steel anchor box comprises an anchor backing plate, a pair of main bearing plates, a pair of secondary bearing plates and an end sealing plate; wherein,
the main bearing plate and the secondary bearing plate are fixedly connected to the upper portion of the anchor backing plate in a perpendicular mode, the secondary bearing plate is fixedly connected between the main bearing plate and the two anchor plates in a perpendicular mode, the sealing end plate is fixedly connected to the main bearing plate and the upper end of the steel anchor box is sealed.
The stay cable guide pipe penetrates through the end sealing plate and is fixedly connected to the end sealing plate and the anchor backing plate.
And one end of the anchor plate, which is far away from the end sealing plate, is in a pointed shape.
Wherein the width of the anchor backing plate is smaller than the distance between the anchor pulling plates.
And the secondary bearing plate is connected with the main bearing plate in a welding manner.
And the main bearing plate is connected with the anchor plate in a welding manner.
In summary, the present invention provides an anchoring device for a stay cable and a concrete girder, comprising: the steel anchor box and the two anchor plates are provided with through holes; the steel anchor box is fixedly connected between the two anchor plates; the two anchor plates are parallel to the axial line of the stay cable; and the two anchor plates penetrate through the through hole through the PBL shear key to be connected with the concrete girder. The anchoring device for the stay cable and the concrete girder realizes the anchoring of the stay cable above the bridge floor, changes the traditional anchoring mode at the bottom of the girder or in a box, and has the advantages of smooth force transmission, convenient construction, easy maintenance, durability, reliability and the like.
Drawings
Fig. 1 is a schematic structural view illustrating connection between an anchoring device and a concrete main beam in an anchoring device for a stay cable and the concrete main beam according to an embodiment of the present invention;
fig. 2 is a cross-sectional view illustrating connection of an anchoring device to a concrete main beam in an anchoring device for a stay cable and the concrete main beam according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along the line a-a in FIG. 1;
reference numerals:
1-anchor plate; 2-main bearing plate; 3-secondary bearing plate; 4-anchor backing plate; 5, sealing the end plate; 6-stay cable guide pipe; 7-PBL shear key; 8-through holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural view illustrating a connection between an anchoring device and a concrete girder in an anchoring device for a stay cable and the concrete girder according to an embodiment of the present invention, as shown in fig. 1, including: the steel anchor box and the two anchor plates 1 are provided with through holes; wherein,
a stay cable guide pipe 6 for a stay cable to pass through is arranged in the steel anchor box, and the steel anchor box is fixedly connected between the two anchor plates 1;
the two anchor plates 1 are parallel to the axial line of the stay cable;
the two anchor plates 1 penetrate through the through hole 8 through the PBL shear key 7 and are connected with the concrete main beam.
Fig. 2 is a cross-sectional view of the connection between the anchoring device and the concrete girder in the anchoring device for the stay cable and the concrete girder according to the embodiment of the present invention, as shown in fig. 2, preferably, the center line of the stay cable guide 6 coincides with the axis of the stay cable.
Preferably, the two anchor plates 1 are arranged in parallel.
Preferably, the force from the stay cable can be evenly and smoothly transmitted to the concrete girder, and the long-term operation can be safely carried out.
In the embodiment of the invention, the anchoring plate provided with the steel anchor box is connected with the prestressed concrete beam through the PBL key, so that the stay cable is anchored above the bridge floor, the traditional anchoring mode at the bottom of the beam or in the box is changed, the technical problems that a stay cable guide pipe collides with dense steel bars to block the steel bars, the space of the guide pipe is difficult to position, the construction is complex and the like are solved, the invention has the advantages of smooth force transmission, convenient construction, easy maintenance, durability, reliability and the like, and remarkable economic and social benefits can be obtained.
On the basis of the above embodiment, the distances between the anchoring points of the stay cables and the two anchor plates 1 are equal.
The distances between the anchoring point of the stay cable and the two anchor plates 1 are equal, so that the problem of uneven stress of the inner anchor plate and the outer anchor plate is solved, and the force transmission path of the force from the stay cable is simple, clear and reliable in stress.
On the basis of the above embodiment, as shown in fig. 3, the steel anchor box includes an anchor backing plate 4, a pair of main bearing plates 2, a pair of secondary bearing plates 3, and a sealing plate 5; wherein,
the main bearing plate 2 and the perpendicular rigid coupling of inferior bearing plate 3 in 4 upper portions of anchor backing plate, inferior bearing plate 3 set firmly perpendicularly in between the main bearing plate 2, main bearing plate 2 and two anchor arm-tie 1 rigid couplings, the 5 rigid couplings of closing end board in will on the main bearing plate 2 the upper end of steel anchor case is sealed.
Preferably, the secondary bearing plate 3 and the main bearing plate 2 are connected by fusion welding through a T-shaped joint.
Preferably, the main bearing plate 2 and the anchor plate 1 are connected by fusion penetration welding through a T-shaped joint.
Specifically, the main bearing plate 2 and the secondary bearing plate 3 are vertically welded on the upper portion of the anchor backing plate 4, the secondary bearing plate 3 is vertically welded between the main bearing plates 2, the main bearing plates 2 are welded and fixed with the two anchor pulling plates 1, and the end sealing plate 5 is welded on the main bearing plates 2 to seal the upper end of the steel anchor box. The closed steel anchor box and the two anchor plates 1 are welded to form a whole, and the closed steel anchor box has the advantages of reasonable spatial arrangement, simple plate structure, easiness in processing and manufacturing, low welding workload and the like, and is large in effective pressure-bearing shear-resistant surface and free of stress concentration and other weak nodes. The steel anchor box structure has attractive appearance and simple structure, and is easy to ensure the coating construction quality.
On the basis of the above embodiment, the stay cable guide tube 6 passes through the end sealing plate 5 and is fixedly connected to the end sealing plate 5 and the anchor backing plate 4.
Specifically, the stay cable guide pipe 6 penetrates through the end sealing plate 5 and is welded and fixed with the anchor backing plate 4 and the end sealing plate 5. The stay cable guide pipe 6 does not need to penetrate through the anchor backing plate 4, but pushes against the anchor backing plate 4, and the compression area of the anchor backing plate 4 can be effectively increased, so that the compression contact area of the anchor backing plate 4 and an anchorage device is increased, no welding line exists on a compression surface, and the flatness of the compression surface is guaranteed.
On the basis of the above embodiment, the end of the anchor plate 1 far away from the end sealing plate 5 is in a tip shape.
Specifically, one end of each of the two anchor plates 1 is in a pointed shape, so that the stress is guaranteed, and the use of materials is reduced.
On the basis of the above embodiment, the width of the anchor backing plate 4 is smaller than the distance between the anchor plates 1.
Specifically, the width of the anchor backing plate 4 is smaller than the distance between the two anchor plates 1.
In the embodiment of the invention, the anchoring plate provided with the steel anchor box is connected with the prestressed concrete beam through the PBL key, so that the stay cable is anchored above the bridge floor, the traditional anchoring mode at the bottom of the beam or in the box is changed, the technical problems that a stay cable guide pipe collides with dense steel bars to block the steel bars, the space of the guide pipe is difficult to position, the construction is complex and the like are solved, the invention has the advantages of smooth force transmission, convenient construction, easy maintenance, durability, reliability and the like, and remarkable economic and social benefits can be obtained.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (8)
1. The utility model provides an anchor of suspension cable and concrete girder which characterized in that includes: the steel anchor box and the two anchor plates are provided with through holes; wherein,
a stay cable guide pipe for a stay cable to pass through is arranged in the steel anchor box, and the steel anchor box is fixedly connected between the two anchor plates;
the two anchor plates are parallel to the axial line of the stay cable;
and the two anchor plates penetrate through the through hole through the PBL shear key to be connected with the concrete girder.
2. The anchoring device for the stay cable and the main concrete beam according to claim 1, wherein the distance between the anchoring point of the stay cable and the two anchor plates is equal.
3. The anchoring device for the stay cable and the concrete girder according to claim 1, wherein the steel anchor box comprises an anchor backing plate, a pair of main bearing plates, a pair of sub bearing plates and an end sealing plate; wherein,
the main bearing plate and the secondary bearing plate are fixedly connected to the upper portion of the anchor backing plate in a perpendicular mode, the secondary bearing plate is fixedly connected between the main bearing plate and the two anchor plates in a perpendicular mode, the sealing end plate is fixedly connected to the main bearing plate and the upper end of the steel anchor box is sealed.
4. The device of claim 3, wherein the stay cable guide tube passes through the end-sealing plate and is fixed to the end-sealing plate and the anchor backing plate.
5. The device for anchoring a stay cable to a main concrete beam according to claim 3, wherein the end of the anchor plate away from the end closure plate is in the shape of a pointed end.
6. The stay cable and concrete girder anchoring device according to claim 3, wherein the width of the anchor pad is smaller than the distance between the anchor plates.
7. The anchoring device for the stay cable and the concrete girder according to claim 3, wherein the secondary bearing plate is welded to the main bearing plate.
8. The device for anchoring a stay cable to a concrete girder according to claim 3, wherein the main bearing plate is welded to the anchor plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451025.3A CN107988907A (en) | 2017-12-27 | 2017-12-27 | A kind of anchor of suspension cable and concrete girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451025.3A CN107988907A (en) | 2017-12-27 | 2017-12-27 | A kind of anchor of suspension cable and concrete girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107988907A true CN107988907A (en) | 2018-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711451025.3A Pending CN107988907A (en) | 2017-12-27 | 2017-12-27 | A kind of anchor of suspension cable and concrete girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107988907A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660911A (en) * | 2018-07-13 | 2018-10-16 | 重庆大学 | A kind of steel anchor plate type cable beam anchoring structure for cable-stayed bridge concrete girder |
| CN108842617A (en) * | 2018-06-22 | 2018-11-20 | 武船重型工程股份有限公司 | A kind of Cable Stayed Steel box bridge anchor case and its manufacturing method |
| CN110158449A (en) * | 2019-06-03 | 2019-08-23 | 中国铁路设计集团有限公司 | A kind of beams of concrete cable-stayed bridge anchor tie plate structure |
| CN114250715A (en) * | 2022-02-15 | 2022-03-29 | 中铁二局集团有限公司 | Method and device for positioning space special-shaped steel arch bridge inhaul cable |
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| EP1001089A1 (en) * | 1998-10-15 | 2000-05-17 | Yincheng Hou | Novel technique for stay cable system |
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2017
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842617A (en) * | 2018-06-22 | 2018-11-20 | 武船重型工程股份有限公司 | A kind of Cable Stayed Steel box bridge anchor case and its manufacturing method |
| CN108660911A (en) * | 2018-07-13 | 2018-10-16 | 重庆大学 | A kind of steel anchor plate type cable beam anchoring structure for cable-stayed bridge concrete girder |
| CN110158449A (en) * | 2019-06-03 | 2019-08-23 | 中国铁路设计集团有限公司 | A kind of beams of concrete cable-stayed bridge anchor tie plate structure |
| CN114250715A (en) * | 2022-02-15 | 2022-03-29 | 中铁二局集团有限公司 | Method and device for positioning space special-shaped steel arch bridge inhaul cable |
| CN114250715B (en) * | 2022-02-15 | 2024-04-26 | 中铁二局集团有限公司 | Positioning method and positioning device for space special-shaped steel arch bridge inhaul cable |
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