CN105525763A - Beam strengthening method - Google Patents
Beam strengthening method Download PDFInfo
- Publication number
- CN105525763A CN105525763A CN201510898439.5A CN201510898439A CN105525763A CN 105525763 A CN105525763 A CN 105525763A CN 201510898439 A CN201510898439 A CN 201510898439A CN 105525763 A CN105525763 A CN 105525763A
- Authority
- CN
- China
- Prior art keywords
- core
- reinforcement means
- reinforce
- cfrp
- core material
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention provides a beam strengthening method and belongs to the technical field of building restoration. The beam strengthening method comprises the steps of selecting a core material of a beam which is strengthened by a core embedment method, strengthening the core material, and strengthening the beam by using the core material through the core embedment method after strengthening the core material. According to the beam strengthening method, the core material adopted for the core embedment method is further strengthened, the probability that the bearing capacity of the core material gets closer to the original bearing capacity of the beam is increased, the range of elasticity of the material is widened, high-strength materials are utilized more fully, and the material characteristics are performed; the ultimate bearing capacity is improved, and the structural distortion is reduced; occurrence of cracks of timber in a tensioned region is delayed, and the ductility is improved; the rigidity of the steel-concrete beam is enhanced. Therefore, according to the beam strengthening method, on the premise that external decorations of structural parts are not destroyed and affected, and the mechanical performance index of the core material can be resorted to the mechanical performance index of the original beam.
Description
Technical field
The invention belongs to building recovery technique field, relate to a kind of reinforcement means, especially the reinforcement means of beam.
Background technology
The Chinese ancient architecture overwhelming majority is under the jurisdiction of timber buildings, and these ancient buildings are owing to being exposed to the sun and rain for a long time, and termite moth erosion infringement, component surface corrosion and ageing, the safety of building is reducing year by year.Current is all generally adopt to change whole beam to the reinforcement and repair of historic building fire prevention, or carries out grout filling to hole, crack.These methods improve the safety of ancient building to a certain extent, and its weak point needs before being to change beam column to unload the beam column of building, and there is potential safety hazard, and speed of application is slow, cost is high.After changing in addition there is notable difference in the outward appearance of component and original part, run counter to the principle with antique value ancient building " restoring the old as the old ".
The corrosion of timber buildings central sill, a tree, used in making timber for boats component mainly occurs in two ends and the upper position of component, and near courtyard He Men, Lang Chu beam generally than the beam of building interior destroy even more serious, especially the Hui Style Architecture such as some ancestral halls, mansion government office in feudal China, temple, long neglected and in disrepair, the phenomenon such as cornice position is many can exist roof leaking, leak, cause beam outwardly sound, but the special damage-form of one when medulla part is rotted, and this phenomenon is also comparatively general.
For the method and technology that wood beam reinforcing is repaired, there are a large amount of theories and analysis of experiments both at home and abroad, but be all directly paste the reinforcing modes such as steel, cloth material and embedding rib on the surface of former beam substantially, the object of reinforcing improves the reinforcing technique that the bearing capacity of destroyed test specimen or rigidity are main targets, and the mode of consolidation process be unidirectional, irreversible, can not second consolidation, and to the appearance effects of wooden frame larger.A large amount of literature research proves, wooden frame component is directly pasted the mechanical performance index that the reinforcing modes such as steel, cloth material and embedding rib can improve wooden frame, but these reinforcing modes are substantially all disposable, do not possess substitutability, are also not easy second consolidation.These shortcomings are fatal shortcomings for the ancient building with historic significance and antique value.
Summary of the invention
The object of the present invention is to provide and a kind ofly easily carry out second consolidation and can the wood beam reinforcing method of available protecting facade.
In order to achieve the above object, solution of the present invention is:
A kind of beam reinforcement means, selects the core for putting core method reinforcement; Described core is reinforced, adopts described core to put core method to beam after reinforcing again and reinforce.
Describedly reinforcing is carried out to core comprise: reinforce in the bottom of core or sidepiece.
CFRP plate is adopted to reinforce described core.
CFRP plate is affixed on bottom or the sidepiece of described core.
Or, implant muscle in the bottom of described core to reinforce described core.
Described muscle is CFRP muscle or reinforcing bar.
Or, adopt core described in galvanized steel plain sheet and CFRP plate composite consolidation.
CFRP plate is affixed on bottom or the sidepiece of described core; Galvanized steel plain sheet is affixed on top or the sidepiece of described core.
Or, adopt two blocks of CFRP plates to reinforce described core.
Two blocks of CFRP plates are affixed on top and the bottom of described core respectively.
Owing to adopting such scheme, the invention has the beneficial effects as follows: beam reinforcement means of the present invention can be taked bottom core, paste CFRP cloth, CFRP plate, the method such as reinforcing bar, CFRP muscle of implanting is reinforced core, re-uses the core after this reinforcing and reinforces beam to put core method.Compare the reinforcing Restoration Techniques of Traditional Wood beam, put core method reinforcing tool and have the following advantages: (1) easy construction; (2) postpone timber crack to occur; (3) ductility of wooden frame is improved; (4) Materials with High Strength is made full use of; (5) defect such as knaur, worm hole is weakened on the impact of timber tensile region; (6) supporting capacity and normal condition functional performance is improved; (7) historical relic initial surface colored drawing is protected; (8) there is the reinforcing technique of substitutability, convertibility.And the timber that in the present invention, opposed core method adopts is reinforced further, the supporting capacity increasing core, more near the possibility of former load bearing beam ability, expands the elastic range of material, utilizes Materials with High Strength more fully, plays material behavior; Improve ultimate bearing capacity, reduce malformation; Be delayed the appearance in timber crack, core tensile region, improve ductility; Enhance the rigidity of steel concrete beam.In sum, beam reinforcement means of the present invention is not damaged at the extraneous adornment meeting structural element and under the prerequisite that affects, core can be made to return to the mechanical performance index of former beam as far as possible.
Accompanying drawing explanation
Fig. 1 a is the schematic diagram of the core after adopting CFRP plate to reinforce in first embodiment of the invention;
Fig. 1 b is the schematic diagram of first embodiment of the invention central sill shell;
Fig. 1 c is the schematic diagram of the beam after adopting first embodiment of the invention central sill reinforcement means to reinforce;
Fig. 2 a is the schematic diagram of the core after adopting bar planting mode to reinforce in second embodiment of the invention;
Fig. 2 b is the schematic diagram of second embodiment of the invention central sill shell;
Fig. 2 c is the schematic diagram of the beam after adopting second embodiment of the invention central sill reinforcement means to reinforce;
Fig. 3 a is the schematic diagram of the core after adopting galvanized steel plain sheet and CFRP plate composite consolidation in third embodiment of the invention;
Fig. 3 b is the schematic diagram of third embodiment of the invention central sill shell;
Fig. 3 c is the schematic diagram of the beam after adopting third embodiment of the invention central sill reinforcement means to reinforce;
Fig. 4 a is the schematic diagram of the core after adopting the two muscle of CFRP plate to reinforce in fourth embodiment of the invention;
Fig. 4 b is the schematic diagram of fourth embodiment of the invention central sill shell;
Fig. 4 c is the schematic diagram of the beam after adopting fourth embodiment of the invention central sill reinforcement means to reinforce.
In accompanying drawing: 1, core; 2, beam shell; 3, CFRP plate; 4, muscle; 5, core; 6, beam shell; 7, galvanized steel plain sheet; 8, CFRP plate; 9, core; 10, beam shell; 11, a CFRP plate; 12, the 2nd CFRP plate; 13, core; 14, beam shell.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
Based on the damage-form of the wooden frame mentioned in above-mentioned background technology, employing is put core method reinforcement technology and is carried out repairing as a kind of suitable method to ancient building.The cross sectional shape of the beam in ancient building is mostly circular or similar round, and this section form is also for the enforcement of putting core method reinforcement technology provides advantage.Putting core method reinforcement technology is be based upon the bearing capacity of core and normal usage can meet on the load exposure basis of former beam, but core method of the putting reinforcing mode that core is implanted in single employing can not meet the requirement of component safety and applicability often.The present invention considers that the mechanical property of core can not meet the situation of instructions for use, takes core method of the putting reinforcement technology of reinforcing further core, thus proposes a kind of based on putting core method and the beam reinforcement means combined reinforced by core.First this beam reinforcement means is reinforced core, and then adopt the core after this reinforcing to reinforce beam, core is in the tensile region of beam.
In first embodiment, the core 1 that first this beam reinforcement means adopts the opposed core method of CFRP (carbon fibre reinforced composite) plate 3 to adopt is reinforced, the affixed bottom in core 1 of CFRP plate 3 or side edge; Afterwards, the core 1 this reinforced is placed in the tensile region of beam shell 2.Fig. 1 a is depicted as in the present embodiment the schematic diagram of the core after adopting CFRP plate to reinforce; Fig. 1 b is beam shell to be reinforced, and wherein area of absence is the tensile region of beam; Fig. 1 c is the structural representation of the beam after adopting the method for this enforcement to reinforce.
In second embodiment, first the bottom that core 5 inserted by CFRP plate or plain bars 4 reinforces core 5 by this beam reinforcement means; Afterwards, the core 5 this reinforced is placed in the tensile region of beam shell 6.Fig. 2 a is the schematic diagram of the core after adopting bar planting mode to reinforce in the present embodiment; Fig. 2 b is beam shell to be reinforced in the present embodiment, and wherein area of absence is the tensile region of beam; Fig. 2 c is the structural representation of the beam after adopting the method for the present embodiment to reinforce.
In 3rd embodiment, the method for galvanized steel plain sheet and CFRP plate composite consolidation core is adopted to reinforce core.In the present embodiment, first galvanized steel plain sheet 7 is affixed on the top of core 9 by beam reinforcement means, and bottom CFRP plate 8 being affixed on core 9 reinforces core 9; Afterwards, the core 9 this reinforced is placed in the tensile region of beam shell 10.Fig. 3 a is the schematic diagram of the core after adopting galvanized steel plain sheet and CFRP plate composite consolidation in the present embodiment; Fig. 3 b is beam shell to be reinforced in the present embodiment, and wherein area of absence is the tensile region of beam; Fig. 3 c is the structural representation of the beam after adopting the method for the present embodiment to reinforce.In the present embodiment, galvanized steel plain sheet 7 is affixed on the top of core 9; And in the present invention, it also can be affixed on the sidepiece of core 9.In the present embodiment, CFRP plate 8 is affixed on the bottom of core 9; And in the present invention, it also can be affixed on the sidepiece of core 9.
In 4th embodiment, the method adopting the two muscle of two blocks of CFRP plates to reinforce core is reinforced core, and these two blocks of CFRP plates are respectively a CFRP plate and the 2nd CFRP plate.In the present embodiment, first a CFRP plate 11 is affixed on the top of core 13 by beam reinforcement means, the 2nd CFRP plate 12 is affixed on the bottom of core 13, to reinforce core 13; Afterwards, the core 13 this reinforced is placed in the tensile region of beam shell 14.Fig. 4 a is the schematic diagram of the core after adopting the two muscle of two blocks of CFRP plates to reinforce in the present embodiment; Fig. 4 b is beam shell to be reinforced in the present embodiment, and wherein area of absence is the tensile region of beam; Fig. 4 c is the structural representation of the beam after adopting the method for the present embodiment to reinforce.In the present embodiment, a CFRP plate 11 is affixed on the top of core 13; And in the present invention, it also can be affixed on the sidepiece of core 13.In the present embodiment, the 2nd CFRP plate 12 is affixed on the bottom of core 13; And in the present invention, it also can be affixed on the sidepiece of core 13.
Beam reinforcement means of the present invention can be taked bottom core, paste CFRP cloth, CFRP plate, and the method such as reinforcing bar, CFRP muscle of implanting is reinforced core, re-uses the core after this reinforcing and reinforces beam to put core method.Compare the reinforcing Restoration Techniques of Traditional Wood beam, put core method reinforcing tool and have the following advantages: (1) easy construction; (2) postpone timber crack to occur; (3) ductility of wooden frame is improved; (4) Materials with High Strength is made full use of; (5) defect such as knaur, worm hole is weakened on the impact of timber tensile region; (6) supporting capacity and normal condition functional performance is improved; (7) historical relic initial surface colored drawing is protected; (8) there is the reinforcing technique of substitutability, convertibility.And the timber that in the present invention, opposed core method adopts is reinforced further, the supporting capacity increasing core, more near the possibility of former load bearing beam ability, expands the elastic range of material, utilizes Materials with High Strength more fully, plays material behavior; Improve ultimate bearing capacity, reduce malformation; Be delayed the appearance in timber crack, core tensile region, improve ductility; Enhance the rigidity of steel concrete beam.In sum, beam reinforcement means of the present invention is not damaged at the extraneous adornment meeting structural element and under the prerequisite that affects, core can be made to return to the mechanical performance index of former beam as far as possible.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. a beam reinforcement means, is characterized in that: select the core for putting core method reinforcement; Described core is reinforced, adopts described core to put core method to beam after reinforcing again and reinforce.
2. beam reinforcement means according to claim 1, is characterized in that: describedly carry out reinforcing to core and comprise: reinforce in the bottom of core or sidepiece.
3. beam reinforcement means according to claim 1, is characterized in that: adopt CFRP plate to reinforce described core.
4. beam reinforcement means according to claim 3, is characterized in that: the bottom or the sidepiece that CFRP plate are affixed on described core.
5. beam reinforcement means according to claim 1, is characterized in that: implant muscle in the bottom of described core to reinforce described core.
6. beam reinforcement means according to claim 5, is characterized in that: described muscle is CFRP muscle or reinforcing bar.
7. beam reinforcement means according to claim 1, is characterized in that: adopt core described in galvanized steel plain sheet and CFRP plate composite consolidation.
8. beam reinforcement means according to claim 7, is characterized in that: the bottom or the sidepiece that CFRP plate are affixed on described core; Galvanized steel plain sheet is affixed on top or the sidepiece of described core.
9. beam reinforcement means according to claim 1, is characterized in that: adopt two blocks of CFRP plates to reinforce described core.
10. beam reinforcement means according to claim 9, is characterized in that: two blocks of CFRP plates are affixed on top and the bottom of described core respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510898439.5A CN105525763B (en) | 2015-12-08 | 2015-12-08 | A kind of beam reinforcement means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510898439.5A CN105525763B (en) | 2015-12-08 | 2015-12-08 | A kind of beam reinforcement means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105525763A true CN105525763A (en) | 2016-04-27 |
| CN105525763B CN105525763B (en) | 2019-01-25 |
Family
ID=55768257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510898439.5A Active CN105525763B (en) | 2015-12-08 | 2015-12-08 | A kind of beam reinforcement means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105525763B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432240A (en) * | 2023-12-18 | 2024-01-23 | 华侨大学 | Repairing method of ancient building girder |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8303664D0 (en) * | 1983-02-10 | 1983-03-16 | Rickards Timber Treatment Ltd | Improving structural value of timber beams |
| DE3709297A1 (en) * | 1986-03-25 | 1987-10-22 | Dick Klapwijk | METHOD FOR RESTORING A WOODEN CONSTRUCTION PART |
| CN101144336A (en) * | 2007-08-28 | 2008-03-19 | 上海市建筑科学研究院(集团)有限公司 | Method for repairing and reinforcing wood beam by carbon fibre bar |
| CN102127973A (en) * | 2010-12-02 | 2011-07-20 | 西安建筑科技大学 | Reinforcing method of beam for building |
| CN202000685U (en) * | 2010-08-13 | 2011-10-05 | 成都建筑工程集团总公司 | Historic building wooden beams and columns reinforced through embedded ribs |
| CN102242571A (en) * | 2011-05-04 | 2011-11-16 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing wood beam by connecting steel plate through screws |
| CN204357147U (en) * | 2014-11-21 | 2015-05-27 | 华北水利水电大学 | The composite reinforcing structure of prestressed reinforced concrete construction flexural member |
| CN104763164A (en) * | 2015-04-30 | 2015-07-08 | 南京工业大学 | Self-tapping screw reinforcing structure and method for pressed rod piece of historic building wood structure roof truss with defects |
-
2015
- 2015-12-08 CN CN201510898439.5A patent/CN105525763B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8303664D0 (en) * | 1983-02-10 | 1983-03-16 | Rickards Timber Treatment Ltd | Improving structural value of timber beams |
| DE3709297A1 (en) * | 1986-03-25 | 1987-10-22 | Dick Klapwijk | METHOD FOR RESTORING A WOODEN CONSTRUCTION PART |
| CN101144336A (en) * | 2007-08-28 | 2008-03-19 | 上海市建筑科学研究院(集团)有限公司 | Method for repairing and reinforcing wood beam by carbon fibre bar |
| CN202000685U (en) * | 2010-08-13 | 2011-10-05 | 成都建筑工程集团总公司 | Historic building wooden beams and columns reinforced through embedded ribs |
| CN102127973A (en) * | 2010-12-02 | 2011-07-20 | 西安建筑科技大学 | Reinforcing method of beam for building |
| CN102242571A (en) * | 2011-05-04 | 2011-11-16 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing wood beam by connecting steel plate through screws |
| CN204357147U (en) * | 2014-11-21 | 2015-05-27 | 华北水利水电大学 | The composite reinforcing structure of prestressed reinforced concrete construction flexural member |
| CN104763164A (en) * | 2015-04-30 | 2015-07-08 | 南京工业大学 | Self-tapping screw reinforcing structure and method for pressed rod piece of historic building wood structure roof truss with defects |
Non-Patent Citations (1)
| Title |
|---|
| 陈刚: "徽州古祠堂木构件加固修复方法研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432240A (en) * | 2023-12-18 | 2024-01-23 | 华侨大学 | Repairing method of ancient building girder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105525763B (en) | 2019-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104675141A (en) | FRP (Fiber Reinforced Plastic) pipe confined cement based composite material reinforced pier column structure | |
| CN105178203B (en) | A kind of method utilizing polyurethane cement composite and bar-mat reinforcement reinforcement bridge component | |
| CN101353928A (en) | Concealed type restoring construction method with reinforced parts applied to archaic building components | |
| CN206486820U (en) | Repair fixing device in a kind of road and bridge crack | |
| CN103603462A (en) | FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam | |
| CN105756365B (en) | A kind of method of rapid reinforcement beams of concrete | |
| CN103953205A (en) | Bamboo earthquake-proof reinforcing structure of existing raw soil wall and method thereof | |
| CN102605968A (en) | Method for reinforcing compression member of masonry structure by means of compounding covering fibers with angle steel | |
| CN105525763A (en) | Beam strengthening method | |
| Abramyan et al. | Improving reinforced concrete column strengthening techniques for reconstruction projects using composite jacketing formworks | |
| CN204491678U (en) | For the attractive joint of outer wall of basement | |
| CN105401740A (en) | Repaired wood structure and wood structure repairing method | |
| CN107869254A (en) | A kind of method of bamboo wood enhancing round log flexural member | |
| CN204001810U (en) | A kind of Covered with Angles encloses cover and reinforces section steel concrete column-steel girder node device after fire | |
| CN104532968B (en) | Prevent concrete structure from building the method for filling wall connecting portion crack with rear | |
| CN203066505U (en) | Reinforcing wall for masonry structures | |
| CN216277058U (en) | Improve crack resistance's of traditional brick structure wall body base seam reinforced structure | |
| CN111827704A (en) | Reinforced concrete structure and reinforcing method | |
| CN205617829U (en) | Concrete floor protective layer peels off and leaks rusty restoration structure of muscle | |
| CN204456651U (en) | Connecting device for reinforced wood-concrete composite beam | |
| CN214659035U (en) | Ancient building restoration timber reinforcing apparatus | |
| CN104453271A (en) | Method for reinforcing bent crack of cantilever plate structure | |
| CN204417946U (en) | Geo-grid | |
| CN204676922U (en) | The curved wooden frame of ancient Wood construction bending resistance that a kind of carbon fibre web is reinforced | |
| CN216476497U (en) | Composite reinforced wood beam structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |