CN104695721A - Building structure reinforcement method through self-generating reaction force - Google Patents
Building structure reinforcement method through self-generating reaction force Download PDFInfo
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- CN104695721A CN104695721A CN201510111739.4A CN201510111739A CN104695721A CN 104695721 A CN104695721 A CN 104695721A CN 201510111739 A CN201510111739 A CN 201510111739A CN 104695721 A CN104695721 A CN 104695721A
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- suspension rod
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- building structure
- reaction frame
- suspension
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Abstract
The invention discloses a building structure reinforcement method through self-generating reaction force. The method includes the steps of performing surface treatment on a beam or a board structure; arranging reaction force application points on design positions of the beam or the board; mounting a reaction force frame, a boom and a boom ejection plate on the beam or the board; mounting a hydraulic unit and applying ejection force to the boom ejection plate to rise the boom; maintaining the ejection force of the hydraulic unit when the amount of displacement of the beam or the board meets the design requirements; adhering a carbon fiber fabric to the lower surface of the beam or the board; withdrawing the ejection force of the hydraulic unit and removing the reaction frame, the boom and the boom ejection plate; performing final blocking treatment on the board. The building structure reinforcement method through self-generating reaction force has the advantages of avoiding the stress hysteresis phenomenon of a reinforcement structure for enabling the reinforcement structure to be synchronically stressed with an original structure and effectively reducing structural deformation, avoiding drilling in the structure for reducing the extent of damage to the structure, being simple, flexible, convenient and quick in construction process as well as avoiding drilling and rib embedding for greatly shortening the construction period.
Description
Technical field
The invention belongs to construction engineering technical field, be specifically related to a kind of building structure strengthening method relying on self to produce counter-force.
Background technology
Along with the fast development of national economy, builing industry arrives unprecedented development gold period.In long use procedure, because the structures such as the reasons such as concrete strength is inadequate, load increases, Cross section Design is more not enough beam slabs built have occurred the phenomenons such as amount of deflection is excessive, crack affecting use safety and the durability of structure.
At present the disease such as, crack excessive for building beam slab amount of deflection, mainly adopts the treatment measures such as increasing section, sticking carbon fiber, steel plate, external prestressing.In order to ensure construction safety and after reinforcing, original structure and new construction can co-operation, reduce Stress resort, carrying out unloading to structure before reinforcing is important measures.Common unloading measure has and alleviates the method such as upper load, support top.But there is following weak point in above unloading measure: when 1, employing alleviates the method for upper load, need to remove upper load, affect normal production and the life of unit in building structure; 2, during employing support top measure, braced structures needs to be supported on next Rotating fields, brings potential safety hazard to next Rotating fields; 3, complicated construction technique.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, providing a kind of building structure strengthening method relying on self to produce counter-force, the deficiency that this reinforcement means can effectively avoid above-mentioned reinforcement means to bring.
For achieving the above object, the present invention adopts following technical proposals:
Rely on and self produce a building structure strengthening method for counter-force, comprise the following steps:
Step 1: surfacing is carried out to the beam needed reinforcement or plated construction;
Step 2: according to designing requirement, lays counter-force application point at the design attitude of beam or plate, and arranges fixed observer point;
Step 3: according to designing requirement, beam or plate are installed reaction frame, suspension rod and suspension rod top board, notice that reaction frame two fulcrums should be tried one's best near two-end structure post position;
Step 4: install hydraulic means between suspension rod top board and reaction frame, according to designing requirement, applies jacking force by hydraulic control device to suspension rod top board, makes suspension rod increase, and monitor beam or plate misalignment;
Step 5: according to monitoring result, when the shift value of beam or plate reaches designing requirement, keeps the jacking force of hydraulic means;
Step 6: at the soffit sticking carbon fiber net of beam or plate, reinforce;
Step 7: treat that carbon fibre web sticking strength reaches designing requirement, or after glue sclerosis, unload the jacking force of hydraulic means and remove reaction frame, suspension rod and suspension rod top board;
Step 8: last shutoff process is carried out to plate.
The surfacing of described step 1, comprises cleaning breaking concrete, dead-end fracture, reinforcing bar rust cleaning.
Hole in the counter-force application point of plate in described step 2.
The aperture of described boring is identical with the aperture of suspension rod.
In described step 3 to the treatment step of plate be: boring suspension rod being passed from below through plate is installed, and is installed on by reaction frame on plate, ensure that the boom hole of reaction frame and suspension rod align; Suspension rod top board bottom linkage rod is connected with suspension rod through reaction frame boom hole.
Between reaction frame and beam or plate, billet is installed in described step 3.
In described step 8, shutoff is treated to the boring of shut.
The suspension rod installed on beam in described step 3 comprises the suspension rod body of rod and suspension hook, and the suspension rod body of rod is fixedly connected with suspension hook.
In described step 3 to the treatment step of beam be: be connected by pin with suspension hook by the suspension rod body of rod, beam is sandwiched in therebetween by suspension hook, is installed on by reaction frame on beam, ensures that the boom hole of reaction frame and the suspension rod body of rod align; Suspension rod top board bottom linkage rod is connected with the suspension rod body of rod through reaction frame boom hole.
Described hydraulic means is hydraulic jack.
Beneficial effect of the present invention is:
1, to avoid in building structure, under the normal production of unit and the prerequisite of life, unloading structure;
2, avoid unloading by pushing tow mode the potential safety hazard brought substructure;
3, avoid owing to unloading the ruggedized construction Stress resort not exclusively caused, ensure that ruggedized construction and original structure can be synchronously stressed.
4, construction technology is simple, flexible: fast, there is obvious reduction the unloading manner duration relatively alleviating upper load and pushing tow mode in reaction frame assembling.
Accompanying drawing explanation
Fig. 1-Fig. 7 is plated construction strengthening construction of the present invention step sequence figure; Wherein, Fig. 1 is plated construction punching, the generalized section after surfacing; Fig. 2 is the generalized section after installing suspension rod; Fig. 3 is the generalized section after installing reaction frame; Fig. 4 is the generalized section after installing suspension rod top board; Fig. 5 for installing hydraulic jack, and applies counter-force by designing requirement, and the distortion making plate reach designing requirement maintains the generalized section of counter-force afterwards; Fig. 6 is the generalized section after sticking carbon fiber back-up coat; Fig. 7 be remove reaction frame and plugging plate boring after generalized section;
Fig. 8 is A-A sectional drawing in Fig. 1;
Fig. 9 is A-A sectional drawing in Fig. 2;
Figure 10 is A-A sectional drawing in Fig. 3;
Figure 11 is A-A sectional drawing in Fig. 4;
Figure 12 is A-A sectional drawing in Fig. 5;
Figure 13 is A-A sectional drawing in Fig. 6;
Figure 14 is A-A sectional drawing in Fig. 7;
Figure 15-Figure 20 is beam structure strengthening construction way figure of the present invention; Wherein, Figure 15 is after beam surfacing, installs the generalized section of suspension hook and the suspension rod body of rod; Figure 16 is the generalized section after installing reaction frame; Figure 17 is the generalized section after installing suspension rod top board; Figure 18 for installing hydraulic jack, and applies counter-force by designing requirement, and the distortion making plate reach designing requirement maintains the generalized section of counter-force afterwards; Figure 19 is the generalized section after sticking carbon fiber back-up coat; Fig. 7 is the generalized section after removing reaction frame;
Figure 21 is A-A sectional drawing in Figure 15;
Figure 22 is A-A sectional drawing in Figure 16;
Figure 23 is A-A sectional drawing in Figure 17;
Figure 24 is A-A sectional drawing in Figure 18;
Figure 25 is A-A sectional drawing in Figure 19;
Figure 26 is A-A sectional drawing in Figure 20;
In figure, 1 is plate; 2 is post; 3-1 is suspension rod; 3-2 is suspension rod top board; 4 is reaction frame; 4-1 is boom hole; 5 is billet; 6 is hydraulic jack; 7 is carbon cloth; 8 is shutoff mortar; 9 is beam; 10-1 is the suspension rod body of rod; 10-2 is suspension hook.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As represented in figures 1 through 14, displacement method prestressed slab reinforcement means is:
1: cleaning plate 1 surface, mainly comprises breaking concrete, crack closure, reinforcing bar rust cleaning etc.
2: in the boring of plate 1 design attitude, attentional manipulation bore diameter and suspension rod 3-1 diameter match.
3: the suspension rod 3-1 boring passing from below through plate 1 is installed.
4: according to design and assembly reaction frame 4, notice that reaction frame 4 boom hole 4-1 aligns with suspension rod 3-1, simultaneously cushioning billet 5 below reaction frame 4.
5: suspension rod top board 3-2 bottom linkage rod is connected with suspension rod 3-1 through reaction frame 4 boom hole 4-1, and suspension rod 3-1 end and suspension rod top board 3-2 bottom linkage rod all have screw thread, by rotating suspension rod top board 3-2, suspension rod 3-1 and suspension rod top board 3-2 is screwed.
6: install hydraulic jack 6, installation site is the clearance position of suspension rod top board 3-2 top and reaction frame 4.
7: apply jacking force according to designing requirement, plate 1 is occurred, and antiarch stablizes jacking force after reaching designing requirement, paste netlike carbon fiber cloth 7, note avoiding plate 1 boom hole 4-1.
8: when carbon cloth 7 sticking strength reaches designing requirement, or after glue sclerosis, unload and remove reaction frame 4.
9: shut is holed.
As shown in Figure 15-26, displacement method prestressed girder reinforcement means is:
1: cleaning beam 9 surface, mainly comprises breaking concrete, crack closure, reinforcing bar rust cleaning etc.
2: install suspension rod body of rod 10-1, suspension hook 10-2 is connected by pin with suspension rod body of rod 10-1.
4: according to design and assembly reaction frame 4, notice that reaction frame 4 boom hole 4-1 aligns with suspension rod body of rod 10-1, simultaneously cushioning billet 5 below reaction frame 4.
5: suspension rod top board 3-2 is connected with suspension rod body of rod 10-1 through reaction frame 4 boom hole 4-1, and suspension rod body of rod 10-1 end and suspension rod top board 3-2 bottom linkage rod all have screw thread, by rotating suspension rod top board 3-2, suspension rod body of rod 10-1 and suspension rod top board 3-2 is screwed.
6: install hydraulic jack 6, installation site is the clearance position of suspension rod top board 3-2 top and reaction frame 4.
7: apply jacking force according to designing requirement, make beam 9 occur antiarch and stablize jacking force, affixing carbon fabric 7 after reaching designing requirement, attention suspension hook 10-2.
8: when carbon cloth 7 sticking strength reaches designing requirement, or after glue sclerosis, unload and remove reaction frame 4.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. rely on and self produce a building structure strengthening method for counter-force, it is characterized in that, comprise the following steps:
Step 1: surfacing is carried out to the beam needed reinforcement or plated construction;
Step 2: according to designing requirement, lays counter-force application point at the design attitude of beam or plate, and arranges fixed observer point;
Step 3: according to designing requirement, beam or plate are installed reaction frame, suspension rod and suspension rod top board;
Step 4: install hydraulic means between suspension rod top board and reaction frame, according to designing requirement, applies jacking force by hydraulic control device to suspension rod top board, makes suspension rod increase, and monitor beam or plate misalignment;
Step 5: according to monitoring result, when beam or plate reach the displacement of designing requirement, keeps the jacking force of hydraulic means;
Step 6: at the soffit affixing carbon fabric of beam or plate, reinforce;
Step 7: treat that carbon cloth sticking strength reaches designing requirement, or after glue sclerosis, unload the jacking force of hydraulic means and remove reaction frame, suspension rod and suspension rod top board;
Step 8: last shutoff process is carried out to plate.
2. building structure strengthening method as claimed in claim 1, is characterized in that, the surfacing of described step 1, comprises cleaning breaking concrete, dead-end fracture, reinforcing bar rust cleaning.
3. building structure strengthening method as claimed in claim 1, is characterized in that, hole in described step 2 in the counter-force application point of plate.
4. building structure strengthening method as claimed in claim 1, it is characterized in that, the aperture of described boring is identical with the aperture of suspension rod.
5. building structure strengthening method as claimed in claim 1, is characterized in that, in described step 3 to the treatment step of plate be: boring suspension rod being passed from below through plate is installed, and is installed on by reaction frame on plate, ensures that the boom hole of reaction frame and suspension rod align; Suspension rod top board bottom linkage rod is connected with suspension rod through reaction frame boom hole.
6. building structure strengthening method as claimed in claim 1, is characterized in that, installs billet in described step 3 between reaction frame and beam or plate.
7. building structure strengthening method as claimed in claim 1, it is characterized in that, in described step 8, shutoff is treated to the boring of shut.
8. building structure strengthening method as claimed in claim 1, it is characterized in that, the suspension rod installed on beam in described step 3 comprises the suspension rod body of rod and suspension hook, and the suspension rod body of rod is fixedly connected with suspension hook.
9. building structure strengthening method as claimed in claim 1, it is characterized in that, in described step 3 to the treatment step of beam be: be connected by pin with suspension hook by the suspension rod body of rod, beam is sandwiched in therebetween by suspension hook, reaction frame is installed on beam, ensures that the boom hole of reaction frame and the suspension rod body of rod align; Suspension rod top board bottom linkage rod is connected with the suspension rod body of rod through reaction frame boom hole.
10. building structure strengthening method as claimed in claim 1, it is characterized in that, described hydraulic means is hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510111739.4A CN104695721B (en) | 2015-03-13 | 2015-03-13 | Building structure reinforcement method through self-generating reaction force |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510111739.4A CN104695721B (en) | 2015-03-13 | 2015-03-13 | Building structure reinforcement method through self-generating reaction force |
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| CN104695721A true CN104695721A (en) | 2015-06-10 |
| CN104695721B CN104695721B (en) | 2017-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488040A (en) * | 2018-12-06 | 2019-03-19 | 郭思麟 | A kind of building reparation bracing means |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932313A (en) * | 1995-07-19 | 1997-02-04 | Kajima Corp | Reinforcing work of concrete beam |
| CN202954378U (en) * | 2012-12-03 | 2013-05-29 | 刘民 | Reaction frame |
| CN103352585A (en) * | 2013-07-10 | 2013-10-16 | 西南科技大学 | Method for reinforcing concrete beam through counter-vault method |
| CN104141297A (en) * | 2014-03-19 | 2014-11-12 | 中国建筑第四工程局有限公司 | Weak bearing stratum foundation strengthening method and structure |
-
2015
- 2015-03-13 CN CN201510111739.4A patent/CN104695721B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932313A (en) * | 1995-07-19 | 1997-02-04 | Kajima Corp | Reinforcing work of concrete beam |
| CN202954378U (en) * | 2012-12-03 | 2013-05-29 | 刘民 | Reaction frame |
| CN103352585A (en) * | 2013-07-10 | 2013-10-16 | 西南科技大学 | Method for reinforcing concrete beam through counter-vault method |
| CN104141297A (en) * | 2014-03-19 | 2014-11-12 | 中国建筑第四工程局有限公司 | Weak bearing stratum foundation strengthening method and structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488040A (en) * | 2018-12-06 | 2019-03-19 | 郭思麟 | A kind of building reparation bracing means |
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| CN104695721B (en) | 2017-01-18 |
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