CN1648388A - Method for prestress binding steel reinforced concrete structure - Google Patents
Method for prestress binding steel reinforced concrete structure Download PDFInfo
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- CN1648388A CN1648388A CNA2004100030910A CN200410003091A CN1648388A CN 1648388 A CN1648388 A CN 1648388A CN A2004100030910 A CNA2004100030910 A CN A2004100030910A CN 200410003091 A CN200410003091 A CN 200410003091A CN 1648388 A CN1648388 A CN 1648388A
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- concrete structure
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Abstract
The present invention relates to method of applying prestressed binding steel in reinforcing and repairing available concrete structure. The method includes the reinforcing method of adhering initial tension high strength steel sheet for reinforcing and adhering no-tension high strength steel sheet onto the concrete structure with reinforced displacement to reinforce. The reinforcing structure and the steel sheet realize the integral operation via high strength screws and binding surface to transfer shearing force. The reinforced concrete structure has greatly raised bearing capacity, rigidity and structural anti-cracking property within the normal operation stage. The method can prolong the safe service life of concrete structure and reduce investment for re-constructing building.
Description
Technical field
The present invention relates to the method for a kind of reinforcing, reparation existing concrete structure.
Background technology
In engineering structuress such as all types of industries and civilian construction, structure, bridge, culvert and tunnel, concrete structure is to use maximum a kind of structures.Because a variety of causes, low etc. as aging, the damaged and former design standard of concrete structure, make concrete structural strength (supporting capacity), rigidity can not satisfy normal instructions for use.Existing concrete structure is reinforced, improved its supporting capacity, prolong its application life and become the engineering technology problem of widely paying close attention to.
At present, in the concrete structure reinforcement method commonly used, reinforcement by sticking of sheets and affixing carbon fabric reinforcing method are widely used, though these two kinds of methods can effectively improve the ultimate bearing capacity in structural deterioration stage, the supporting capacity of the normal operational phase of structure and rigidity are improved effect and not obvious.
Summary of the invention
Paste high strength steel plate by surface, and make it to set up prestressing force, not only can strengthen the supporting capacity of concrete structure, and can improve rigidity, the crack resistance of concrete structure greatly at concrete structure to be reinforced.Thus, the object of the present invention is to provide by high strength steel plate and in concrete structure to be reinforced, set up permanent prestressed method.
For achieving the above object, the invention provides two kinds of methods.A kind ofly be: the method for pasting steel plate reinforcement reinforced concrete structure with initial tension; Another kind is a reinforcement means of pasting no initial tension steel plate on the concrete structure of the displacement of forcing having.
1 pastes the method for the steel plate reinforcement reinforced concrete structure with initial tension
To have the high strength steel plate (1) of initial tension, it be sticked on the surface of concrete structure to be reinforced (2) with structure glue (3), two ends high-strength bolt (4) anchoring, thus high strength steel plate and concrete structure are connected to integral body.In concrete structure, produce prestressing effect after putting, reach consolidation effect.The concrete following steps that adopt:
1.. cleaning concrete structure reinforcement face and steel plate binding face.
2.. bore high-strength bolt hole (taking an examination and consider the elongation of stretch-draw steel plate in the bolt hole position on the steel plate) in the relevant position for the treatment of ruggedized construction and steel plate.
3.. the stretch-draw steel plate is to proof stress.
4.. on concrete surface of having handled well and steel plate, smear structure glue.
5.. at consolidation of concrete structure face pressing high strength steel plate; And high-strength bolt tightened.
6.. after treating that structure glue curing reaches design strength, in concrete structure, set up prestressing force thereby put a steel plate.
2 by there being the reinforcement means of pasting no initial tension steel plate on the concrete structure of the displacement of forcing
Make earlier and treat that reinforced concrete structure (2) forces displacement, high strength steel plate (1) is sticked on concrete structural surface to be reinforced with structure glue (3) with it, and use high-strength bolt (4) anchoring at two ends, steel plate and concrete structure are connected to integral body.Force displacement by removal, make and set up prestressing force in the structure, reach the effect of reinforcing.The concrete following steps that adopt:
1.. ruggedized construction and steel plate binding face are carried out surfacing, mainly are polishing and cleaning.
2.. make structure force displacement (size of forcing displacement applies prestressed size according to need and determines by calculating).
3.. bore the high-strength bolt hole in the relevant position for the treatment of ruggedized construction and steel plate.
4.. on concrete surface of having handled well and steel plate, smear structure glue simultaneously.
5.. the steel plate pressing in the consolidation of concrete structure face, and is tightened high-strength bolt.
6.. after treating that structure glue curing reaches design strength, removal forces displacement, by the recovery process that steel plate constraint ruggedized construction is forced displacement, sets up prestressing force in concrete structure.
The reinforcement means that the present invention proposes makes the concrete structure after the reinforcing have the similar characteristics of partial prestressed structure.The prestressing force of setting up in concrete is from the initial tension (method one) of steel plate or the restoring force (method two) of forcing displacement.The present invention adopts high-strength bolt that steel plate is anchored on the concrete structure, thereby makes prestressing force be able to permanent maintenance.By evidence, the concrete structure after the reinforcement can improve the crack resistance of supporting capacity, rigidity and the structure of the normal operational phase of structure greatly.This method can prolong the concrete structure safe operating life, avoids building to rebuild the investment pressure that brings.
Description of drawings
Fig. 1 is a ruggedized construction schematic diagram of the present invention.
The specific embodiment
1 method of pasting the steel plate reinforcement concrete structure with initial tension adopts following technological process:
1.. according to original design data to reinforced concrete structure, and the detection of structure and evaluation, the design reinforcement parameter.
2.. ruggedized construction and steel plate binding face are carried out surfacing, mainly are polishing and cleaning.
3.. bore high-strength bolt hole (taking an examination and consider the elongation of stretch-draw steel plate in the bolt hole position on the steel plate) in the relevant position for the treatment of ruggedized construction and steel plate.
4.. steel plate is installed on the repeatedly used special-purpose stretch-draw frame, and is stretched to proof stress.
5.. on concrete surface of having handled well and steel plate, smear structure glue simultaneously with spatula.
6.. make steel plate and concrete surface closely connected and keep certain contact pressure with securing member; And the high strength crab-bolt tightened.
7.. structure glue is after curing reaches prescribed strength, and removal of fastener is put a steel plate (removing the anchor bolt of afterburning frame upper steel plate).
8.. the exposure to steel plate is carried out preservative treatment.
2 by there being the reinforcement means of pasting no initial tension steel plate on the concrete structure of the displacement of forcing to adopt following technological process:
1.. according to original design data to reinforced concrete structure, and the detection of structure and evaluation, the design reinforcement parameter.
2.. ruggedized construction and steel plate binding face are carried out surfacing, mainly are polishing and cleaning.
3.. bore the high-strength bolt hole in the relevant position for the treatment of ruggedized construction and steel plate.
4.. make structure force displacement (size of forcing displacement applies prestressed size according to need and determines by calculating) with support and jack.
5.. on concrete surface of having handled well and steel plate, smear structure glue simultaneously with spatula.
6.. make steel plate and concrete surface closely connected and keep certain contact pressure with securing member; And the high strength crab-bolt tightened.
7.. structure glue is after curing reaches prescribed strength, and removal forces displacement support and jack, removal of fastener.
8.. the exposure to steel plate is carried out preservative treatment.
Claims (2)
1 one kinds of stickups have the method for the steel plate reinforcement concrete structure of initial tension.It is characterized in that: the high strength steel plate that will have initial tension, with structure glue it is sticked on the surface of concrete structure to be reinforced, two ends high-strength bolt anchoring, thus be connected to integral body with concrete structure, in concrete structure, produce prestressing effect after putting, reach consolidation effect.
2 one kinds by there being the reinforcement means of pasting no initial tension steel plate on the concrete structure of the displacement of forcing.It is characterized in that: make earlier and treat that reinforced concrete structure forces displacement, high strength steel plate is sticked on concrete structural surface to be reinforced with structure glue with it, and be connected to integral body with high-strength bolt anchoring and concrete structure at two ends, force displacement by removal, set up prestressing force in the structure thereby make, reach the effect of reinforcing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100030910A CN1648388A (en) | 2004-01-19 | 2004-01-19 | Method for prestress binding steel reinforced concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100030910A CN1648388A (en) | 2004-01-19 | 2004-01-19 | Method for prestress binding steel reinforced concrete structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1648388A true CN1648388A (en) | 2005-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2004100030910A Pending CN1648388A (en) | 2004-01-19 | 2004-01-19 | Method for prestress binding steel reinforced concrete structure |
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| CN (1) | CN1648388A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635074A (en) * | 2012-05-14 | 2012-08-15 | 中交第一公路勘察设计研究院有限公司 | Device for sticking and compressing steel plates of small box girder and application method of device |
| CN102979320A (en) * | 2012-12-29 | 2013-03-20 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing severely vibrated and damaged reinforced concrete frame structure by coating steel jacket outside |
| CN103362320A (en) * | 2013-07-25 | 2013-10-23 | 叶香竹 | Construction method of silicone rubber glass fiber cloth strengthening beam |
| CN103741959A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Method for structure reinforcing by externally bonding assembly type PC framework |
| CN106256975A (en) * | 2016-07-01 | 2016-12-28 | 河南城建学院 | A kind of punch device and the method that punches thereof for truss double angle rod member reinforcement |
| CN107060362A (en) * | 2017-03-21 | 2017-08-18 | 武汉大学 | Beams of concrete hogging moment area ruggedized construction based on pre-stressed steel plate |
| CN110173125A (en) * | 2019-04-11 | 2019-08-27 | 广东中青建筑科技有限公司 | A kind of method of the external prestressing transplanting anti-bend reinforced beam of steel plate |
| CN110820603A (en) * | 2019-09-29 | 2020-02-21 | 长沙理工大学 | Bridge vertical prestress loss compensation method based on surface layer embedded prestress lath |
-
2004
- 2004-01-19 CN CNA2004100030910A patent/CN1648388A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635074A (en) * | 2012-05-14 | 2012-08-15 | 中交第一公路勘察设计研究院有限公司 | Device for sticking and compressing steel plates of small box girder and application method of device |
| CN102635074B (en) * | 2012-05-14 | 2014-05-14 | 中交第一公路勘察设计研究院有限公司 | Use method of device for sticking and compressing steel plates of small box girder |
| CN102979320B (en) * | 2012-12-29 | 2016-04-06 | 上海市建筑科学研究院(集团)有限公司 | The method of serious damaged reinforced concrete frame structure reinforced by outsourcing steel bushing |
| CN102979320A (en) * | 2012-12-29 | 2013-03-20 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing severely vibrated and damaged reinforced concrete frame structure by coating steel jacket outside |
| CN103362320A (en) * | 2013-07-25 | 2013-10-23 | 叶香竹 | Construction method of silicone rubber glass fiber cloth strengthening beam |
| CN103741959A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Method for structure reinforcing by externally bonding assembly type PC framework |
| CN103741959B (en) * | 2013-12-30 | 2015-10-28 | 北京工业大学 | The method of outer subsides assembling PC framework method ruggedized construction |
| CN106256975A (en) * | 2016-07-01 | 2016-12-28 | 河南城建学院 | A kind of punch device and the method that punches thereof for truss double angle rod member reinforcement |
| CN106256975B (en) * | 2016-07-01 | 2019-03-29 | 河南城建学院 | One kind punches device and its method that punches for the rod piece reinforcement of truss double angle |
| CN107060362A (en) * | 2017-03-21 | 2017-08-18 | 武汉大学 | Beams of concrete hogging moment area ruggedized construction based on pre-stressed steel plate |
| CN110173125A (en) * | 2019-04-11 | 2019-08-27 | 广东中青建筑科技有限公司 | A kind of method of the external prestressing transplanting anti-bend reinforced beam of steel plate |
| CN110173125B (en) * | 2019-04-11 | 2021-06-08 | 广东中青建筑科技有限公司 | Method for reinforcing beam by bending-resistant steel plate in external prestress transplantation |
| CN110820603A (en) * | 2019-09-29 | 2020-02-21 | 长沙理工大学 | Bridge vertical prestress loss compensation method based on surface layer embedded prestress lath |
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