CN204343166U - A kind of combined type gravity anchorage - Google Patents
A kind of combined type gravity anchorage Download PDFInfo
- Publication number
- CN204343166U CN204343166U CN201420730601.3U CN201420730601U CN204343166U CN 204343166 U CN204343166 U CN 204343166U CN 201420730601 U CN201420730601 U CN 201420730601U CN 204343166 U CN204343166 U CN 204343166U
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- Prior art keywords
- anchorage
- anchor
- gravity
- combined type
- ground
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Abstract
The utility model discloses a kind of combined type gravity anchorage, belong to bridge engineering field.For improving the stability against sliding of gravity anchor and stability against overturning, when building gravity anchor, at rear anchor room sidewall, rear anchor room base plate and with in the anchor body of rear anchor room base plate equal altitudes, to ground internal drilling and prestressed anchor cable.Prestress anchorage cable adds the pressure between anchorage and ground, improves the anti-slide performance of gravity anchor, and the active force of prestress anchorage cable resists the trend of toppling of anchorage simultaneously.Also can when reinforcing existing gravity anchor, prestressed anchor cable in ground, transform combined type gravity anchorage as by the gravity anchor of routine.This combined type gravity anchorage can improve the safety of structure, reduces the volume of anchorage simultaneously, reduces the cutting depth of ground, saves the expenditure of construction of anchorage.
Description
Technical field
The utility model relates to bridge engineering field, relates more specifically to Analysis of Suspension Bridges ' Anchorage.
Background technology
Modern suspension is primarily of the large component composition of anchorage, Sarasota, funicular system, stiff girder etc. four.Anchorage, as important component cable power being passed to ground, is generally divided into gravity anchor and tunnel-type anchorage two class.Conventional gravity anchor relies on the huge pulling force of the dead-weight balanced main push-towing rope of anchorage, and the acting in conjunction that tunnel-type anchorage makes full use of anchorage and surrounding rock body carrys out anchoring main push-towing rope.
Compared with gravity anchor, bridge anchorage is cheap, as being built in the U.S. George Washington bridge of 1931, gravity anchor needs concrete 10.7 ten thousand stere, tunnel-type anchorage only needs 2.2 ten thousand steres, the Chongqing E Gongyan Yangtze Bridge built up for 2000, tunnel-type anchorage force of gravity formula anchorage saves 1,500 ten thousand yuans.Bridge anchorage is in below earth's surface, avoids the heavy excavation to original place table, also has unique advantage in protection of the environment.Even so, the practical engineering application of tunnel-type anchorage is little, and tracing it to its cause is due to the cable power for large span suspension bridge comparatively large (single cable reaches tens thousand of ton), requires higher to the rock quality at bridge location anchorage place, and due to male cone body size comparatively large, the difficulty of excavation supporting is larger.Therefore, in actual suspension bridge engineering, gravity anchor is main anchorage form.
Because gravity anchor needs to carry out large excavation, concreting amount is huge, and expense comparatively tunnel-type anchorage is high a lot.How reducing the expenditure of construction of gravity anchor, is the technical barrier of pendulum in face of bridge technology personnel.
Utility model content
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art and problem, provides a kind of novel anchorage form.The feature of this combined type gravity anchorage is: in gravity anchor structure, is provided with the prestress anchorage cable stretching into ground.
Preferably, prestress anchorage cable is arranged on rear anchor room base plate, rear anchor room sidewall.
Further, with in the anchor body of rear anchor room base plate equal altitudes the prestress anchorage cable stretching into ground is installed.
In addition, also in front anchor room, the prestress anchorage cable stretching into ground can be installed.
When the existing gravity anchorage of maintenance and reinforcement, on existing anchorage, build part concrete by embedding re-bar technique, and the prestress anchorage cable stretching into ground is within it installed.
Compared with prior art, combined type gravity anchorage of the present utility model has following beneficial effect:
1. prestress anchorage cable adds the pressure between anchorage and ground, improves the anti-slide performance of gravity anchor, and the active force of prestress anchorage cable resists the trend of toppling of anchorage simultaneously, and therefore, combined type anchorage improves the stability of anchorage;
2. because reducing foundation dredging engineering quantity, reducing concreting amount, can construction costs be reduced;
3. the reduction of workload, is conducive to accelerating construction progress;
4 these utility models are that the reinforcing of existing Analysis of Suspension Bridges ' Anchorage provides a kind of method efficiently;
5 stretch into prestress anchorage cable to ground from anchorage, play the effect of consolidated subsoil simultaneously, improve the safety of structure further.
Accompanying drawing explanation
One of Fig. 1 schematic longitudinal section of the present utility model;
Fig. 2 schematic longitudinal section two of the present utility model;
Fig. 3 schematic cross-sectional view of the present utility model.
Wherein: 1-anchorage, 2-main push-towing rope, 3-rear anchor room base plate, 4-strand, 5-rear anchor room, 6-rear anchor room sidewall, 7-prestress anchorage cable, 8-connecting reinforcement, 9-existing anchorage, 10-young concrete, 11-connect presstressed reinforcing steel.
Detailed description of the invention
Be below specific embodiment of the utility model, and by reference to the accompanying drawings the technical solution of the utility model be described, but the utility model is not limited to these embodiments.
Embodiment 1
Fig. 1 is embodiment schematic longitudinal section of the present utility model.The agent structure of anchorage is substantially identical with conventional gravity anchor, only increases prestress anchorage cable (7).Building in anchorage (1) process, because anchorage (1) is concrete in mass, when building, answering layering to carry out.The first floor can build to rear anchor room base plate (3) highly, build rear anchor room sidewall (6) simultaneously.Pvc pipe is installed as the cell channels of prestress anchorage cable (7) in anchorage (1) during assembling reinforcement, and anchor backing plate is installed.Concreting, reaches after designing requirement until concrete strength, through anchor plate hole, and boring prestressed anchor cable (7), and mud jacking.Continue other parts of construction anchorage.
Embodiment 2
Fig. 2 is embodiment schematic longitudinal section of the present utility model.Consider that in embodiment 1, prestressed anchor cable (7) directly has influence on the continuation construction of anchorage (1) other parts, prestress anchorage cable (7) is only arranged on rear anchor room base plate (3) and rear anchor room sidewall (6).The installation of prestress anchorage cable (7) can be carried out with the erection of main cable strand (4) simultaneously.Thus, the curing period of bottom concrete and the construction period of prestress anchorage cable (7) can be saved in total lever factor.
Embodiment 3
Fig. 3 is embodiment schematic cross-sectional view of the present utility model.For increasing stability and the safety of existing anchorage (9), it is reinforced.In the both sides of existing anchorage (9), compaction treatment is carried out to ground, existing anchorage (9) side surface dabbing, and hole, with chemical glue implantation connecting reinforcement (8) and as the finish rolling deformed bar connecting presstressed reinforcing steel (11).The plain bars of colligation young concrete (10) part, installs PVC section as the pipeline of prestress anchorage cable (7) in the newly placed concrete being about to build (10), and installs anchor backing plate, formwork erection concreting.After concrete reaches design strength, stretch-draw connects presstressed reinforcing steel (11) and mud jacking.Subsequently, continue vertical boring through pvc pipe, prestressed anchor cable (7), stretch-draw mud jacking.
Some principles of the above the utility model combined type gravity anchorage that just explains through diagrams, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model is applied for.
Claims (5)
1. a combined type gravity anchorage, is characterized in that: in gravity anchor structure, is provided with the prestress anchorage cable stretching into ground.
2. combined type gravity anchorage according to claim 1, is characterized in that: prestress anchorage cable is arranged on rear anchor room base plate, rear anchor room sidewall.
3. combined type gravity anchorage according to claim 2, is characterized in that: be provided with in the anchor body of rear anchor room base plate equal altitudes the prestress anchorage cable stretching into ground.
4. combined type gravity anchorage according to claim 2, is characterized in that: be provided with in front anchor room the prestress anchorage cable stretching into ground.
5. combined type gravity anchorage according to claim 1, is characterized in that: the part concrete of anchorage is increased on original anchorage by embedding re-bar technique, and installs the prestress anchorage cable stretching into ground within it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730601.3U CN204343166U (en) | 2014-11-30 | 2014-11-30 | A kind of combined type gravity anchorage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730601.3U CN204343166U (en) | 2014-11-30 | 2014-11-30 | A kind of combined type gravity anchorage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204343166U true CN204343166U (en) | 2015-05-20 |
Family
ID=53226444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420730601.3U Expired - Fee Related CN204343166U (en) | 2014-11-30 | 2014-11-30 | A kind of combined type gravity anchorage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204343166U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484160A (en) * | 2015-12-11 | 2016-04-13 | 中交一公局第三工程有限公司 | Method for digging deep foundation pit by gravity anchor |
| CN105714678A (en) * | 2014-11-30 | 2016-06-29 | 郑州大学 | Composite gravity anchorage |
| CN107401118A (en) * | 2016-07-22 | 2017-11-28 | 中国科学院武汉岩土力学研究所 | A kind of suspension bridge pier-stage type prestressing force anchorage |
-
2014
- 2014-11-30 CN CN201420730601.3U patent/CN204343166U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714678A (en) * | 2014-11-30 | 2016-06-29 | 郑州大学 | Composite gravity anchorage |
| CN105484160A (en) * | 2015-12-11 | 2016-04-13 | 中交一公局第三工程有限公司 | Method for digging deep foundation pit by gravity anchor |
| CN107401118A (en) * | 2016-07-22 | 2017-11-28 | 中国科学院武汉岩土力学研究所 | A kind of suspension bridge pier-stage type prestressing force anchorage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20171130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |