CN101451345A - Herringbone diagonal brace anchoring structure of concrete main beam - Google Patents
Herringbone diagonal brace anchoring structure of concrete main beam Download PDFInfo
- Publication number
- CN101451345A CN101451345A CNA2007101715590A CN200710171559A CN101451345A CN 101451345 A CN101451345 A CN 101451345A CN A2007101715590 A CNA2007101715590 A CN A2007101715590A CN 200710171559 A CN200710171559 A CN 200710171559A CN 101451345 A CN101451345 A CN 101451345A
- Authority
- CN
- China
- Prior art keywords
- concrete
- diagonal brace
- girder
- diagonal braces
- anchoring
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anchoring structure for a concrete girder when a continuous beam is transformed into a cable-stayed bridge, which comprises concrete anchoring blocks and diagonal braces configured with prestressing force inside. The concrete anchoring block is anchored in the middle part of a box girder roof plate inside the concrete girder. The diagonal braces are also arranged inside the concrete. The upper ends of the two diagonal braces are fixed on the concrete anchoring block, and the lower ends of the two diagonal braces are fixed at a lower left corner and a right left corner inside the concrete respectively. Prestressed steel strands are arranged in the concrete diagonal braces. A stay cable is anchored on the concrete anchoring block of the box girder roof plate. Load of the stay cable is resisted by the concrete diagonal braces. The anchoring structure for the concrete girder has the advantages of low structure cost, safety and reliability, simple processing and assembly, and wide application, and can be widely applied to a control proposal of long-term deflection of a built long-span continuous steel frame.
Description
Technical field
The invention belongs to bridge construction engineering field, the anchor structure of concrete girder when relating to a kind of continuous beam and converting cable stayed bridge to especially can be controlled the anchor structure of the Long-term Deflection of the firm structure of concrete continuous effectively.
Background technology
The long-term downwarp problem of big span continuous rigid structure bridge of having built both at home and abroad is quite serious at present, to have a strong impact on the functional performance and the endurance quality of big span continuous rigid structure bridge if things go on like this, and can produce security threat to navigation ship under space vehicle and the bridge etc., thereby a kind of structure of necessary design is used to control the long-term downwarp problem of big span continuous rigid structure bridge.
Summary of the invention
The anchor structure of concrete girder when the object of the present invention is to provide a kind of continuous beam to convert cable stayed bridge to, can on big span continuous rigid structure concrete girder, set up a kind of anchor structure of suspension cable, by the stretch-draw suspension cable concrete girder be applied external force upwards then and reach the long-term downwarp of the big span continuous rigid structure of control.
For reaching above purpose, solution of the present invention is:
The anchor structure of concrete girder when a kind of continuous beam converts cable stayed bridge to, comprise that concrete anchoring piece, internal configurations have prestressed diagonal brace, concrete anchoring piece is anchored at the mid portion of the case back plate of concrete girder inside, and inside concrete also disposes diagonal brace.
Further, the upper end of two diagonal braces all is fixed on the concrete anchoring piece, and the lower end is individually fixed in the lower left corner and the lower right corner of inside concrete.
Configuration prestress wire in the concrete diagonal brace.
Suspension cable is anchored on the concrete anchoring piece of case back plate, and the load of suspension cable is resisted by the concrete diagonal brace.
Owing to adopted such scheme, the present invention to have following characteristics: this infrastructure cost is low and safe and reliable, and process and assemble is simple, and applicability is wide, can be widely used in the control scheme of the big span continuous rigid structure Long-term Deflection of having built.
Description of drawings
Fig. 1 embodiment of the invention scheme elevational schematic view.
Fig. 2 embodiment of the invention scheme side schematic view.
The specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawing illustrated embodiment.
The anchor structure of concrete girder comprised that concrete anchoring piece 1, internal configurations have prestressed diagonal brace 2 when continuous beam of the present invention converted cable stayed bridge to.Mid portion anchoring at the case back plate of concrete girder 3 inside has concrete anchoring piece 1, inside concrete also disposes diagonal brace 2, the upper end of two diagonal braces 2 is all fixing with concrete anchoring piece 1, the lower end is individually fixed in the lower left corner and the lower right corner of concrete girder 3 inside, configuration prestress wire in the concrete diagonal brace 1.Suspension cable is anchored on the concrete anchoring piece 1 of case back plate, and the load of suspension cable is by 2 opposings of concrete diagonal brace.
This structure appears as herringbone concrete diagonal brace in appearance, and this structure can be controlled the Long-term Deflection of the firm structure of concrete continuous effectively.
One, the anchoring power transmission is safe and reliable
The anchor structure power transmission of concrete girder was safe and reliable when the continuous beam that adopts the present invention to propose converted cable stayed bridge to: its Path of Force Transfer is, suspension cable is anchored on the concrete anchoring piece 1 of case back plate, the load of suspension cable disposes prestress wire by 2 opposings of concrete diagonal brace in the diagonal brace 2.This structure stress is clearer and more definite, and is safe and reliable.
Two, process and assemble is fairly simple
Because this main structural is the concrete component scheme, only need to reserve corresponding reinforcing bar, be very beneficial for the consolidation process in later stage, original structure there is not other influence.
Three, cost is lower
Because this structure only needs to apply on some cross section of concrete girder, so cost is relatively low for the construction fund of girder.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (3)
1, a kind of herringbone diagonal brace anchoring structure of concrete girder, it is characterized in that: comprise that concrete anchoring piece, internal configurations have prestressed diagonal brace, concrete anchoring piece is anchored at the mid portion of the case back plate of concrete girder inside, concrete box girder inside also disposes diagonal brace, and suspension cable is anchored on the concrete anchoring piece of case back plate.
2, the herringbone diagonal brace anchoring structure of concrete girder according to claim 1 is characterized in that: this diagonal brace has two, and its upper end all is fixed on the concrete anchoring piece, and the lower end is individually fixed in the lower left corner and the lower right corner of inside concrete.
3, the herringbone diagonal brace anchoring structure of concrete girder according to claim 1 and 2 is characterized in that: configuration prestress wire in this concrete diagonal brace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101715590A CN101451345A (en) | 2007-11-30 | 2007-11-30 | Herringbone diagonal brace anchoring structure of concrete main beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101715590A CN101451345A (en) | 2007-11-30 | 2007-11-30 | Herringbone diagonal brace anchoring structure of concrete main beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101451345A true CN101451345A (en) | 2009-06-10 |
Family
ID=40733810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101715590A Pending CN101451345A (en) | 2007-11-30 | 2007-11-30 | Herringbone diagonal brace anchoring structure of concrete main beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101451345A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660920A (en) * | 2012-06-07 | 2012-09-12 | 河北燕峰路桥建设集团有限公司 | Framework type large-span combined prestressed highway bridge and preparation process thereof |
| CN112647429A (en) * | 2020-12-23 | 2021-04-13 | 蒋友富 | Box girder with anchoring device and box girder bridge |
-
2007
- 2007-11-30 CN CNA2007101715590A patent/CN101451345A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660920A (en) * | 2012-06-07 | 2012-09-12 | 河北燕峰路桥建设集团有限公司 | Framework type large-span combined prestressed highway bridge and preparation process thereof |
| CN112647429A (en) * | 2020-12-23 | 2021-04-13 | 蒋友富 | Box girder with anchoring device and box girder bridge |
| CN112647429B (en) * | 2020-12-23 | 2022-07-26 | 蒋友富 | Box girder with anchoring device and box girder bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203007856U (en) | External prestressing reinforcement system for hollow slab girder bridge | |
| CN204645273U (en) | A kind of prestressing force Self-resetting concrete space frame node | |
| CN102852244B (en) | Detachable self-resetting type energy-dissipation coupling beam | |
| CN103388408A (en) | External pre-stressed tendon reinforcing steering block for building structure | |
| CN104032891A (en) | Prestressed double laminated wood beam | |
| CN103290786A (en) | System and method for rapidly reinforcing railway bridge by external prestressing | |
| CN204589815U (en) | Prefabricated assembled FRP-steel-concrete combined bridge deck | |
| CN104032832B (en) | A kind of post-stressed bamboo-wood structure framework | |
| CN210916962U (en) | Segmental precast beam of cantilever assembly bridge and splicing structure thereof | |
| CN203559329U (en) | Steel-RPC (reactive powder concrete) combined bridge | |
| CN104389267A (en) | Large-span suspension bridge reinforcement beam bridge face plate | |
| CN101451345A (en) | Herringbone diagonal brace anchoring structure of concrete main beam | |
| CN103556563B (en) | Steel-RPC combined bridge | |
| CN103306495B (en) | Wooden construction truncated cylinder reinforced construction method | |
| CN203160126U (en) | FRP-concrete composite bridge panel | |
| KR100904880B1 (en) | The long span structure and this construction technique which synthesized an arch and a under tension | |
| CN203867064U (en) | Prestressed double-splice laminated wood beam | |
| CN201347586Y (en) | Large-span prestressed cable-supported truss structure | |
| CN201103167Y (en) | Giant steel frame support structure | |
| CN204753341U (en) | Assembled wave form steel web combination precast beam | |
| CN210712513U (en) | Temporary tower beam consolidation structure | |
| CN103938732A (en) | Combination joint of prefabricated concrete beam and rectangular concrete filled steel tubular column connected through pre-stressed steel bars and common steel bars | |
| CN101446064A (en) | Inclined strut anchor structure of a concrete girder | |
| CN203603024U (en) | High tower type railway concrete part cable-stayed bridge | |
| CN208219385U (en) | A kind of intensive midfeather UHPC box girder bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090610 |