CN102733619A - Strengthening method for reinforced concrete frame structure - Google Patents
Strengthening method for reinforced concrete frame structure Download PDFInfo
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- CN102733619A CN102733619A CN2012101850095A CN201210185009A CN102733619A CN 102733619 A CN102733619 A CN 102733619A CN 2012101850095 A CN2012101850095 A CN 2012101850095A CN 201210185009 A CN201210185009 A CN 201210185009A CN 102733619 A CN102733619 A CN 102733619A
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Abstract
The invention discloses a strengthening method for a reinforced concrete frame structure. The strengthening method comprises the following steps of: determining a strengthening space of the reinforced concrete frame structure, wherein the strengthening space is located under an outdoor terrace on which the reinforced concrete frame structure is located; installing a concrete wall at preset intervals apart from frame columns of the reinforced concrete frame structure in the strengthening space; and installing a concrete beam between the top end of the concrete wall and the frame columns of the reinforced concrete frame structure according to the position of a connecting beam of the reinforced concrete frame structure, wherein the concrete wall and the concrete beam are used for strengthening the reinforced concrete frame structure together. According to the strengthening method disclosed by the invention, earthquake borne by the frame structure is effectively relieved, the earthquake response of the structure is reduced, and the earthquake resistant behavior of the reinforced concrete frame structure is improved.
Description
Technical field
The application relates to the building structure strengthening technical field, particularly relates to a kind of reinforcement means of reinforced concrete frame structure.
Background technology
Frame construction is meant by Vierendeel girder and frame column and forms the structure that constitutes bearing system to rigidly connect or to be hinged and connected to connect, promptly forms framework by Vierendeel girder and frame column and resist horizontal loading and the vertical load that occurs in the use jointly.Adopt the not load-bearing of house wall of frame construction, only play and go along with sb. to guard him and compartmentation.Frame construction has advantages such as layout is flexible, deadweight is lighter, in China's industry and civilian construction, is adopted by extensive.
At present, for the reinforcement means of reinforced concrete frame structure, generally can be divided into direct reinforcement means and indirect reinforcement means.
Directly reinforcing method is a method of directly structural element being taked seismic hardening; For example, the increasing section method is glued shaped steel method, outer steel bonding plate method outward or is glued fibre sheet material method etc. outward; The common feature of these methods is directly to reinforce to intending the member of reinforcing, and improves the supporting capacity of member.Indirectly reinforcement means mainly is according to the structural concept of existing framework and the layout of structural element, takes technical measures to change the force path and the distribution of internal force of structure, or reduces load that structural element bears to reach the purpose of reinforcing.For example; Is framework-shear wall dual structure architecture with framework by the substance structural transformation through setting up shear wall, not direct stiffening frame structure division, but bear most of geological process by shear wall; Frame construction is as the second road anti-vibration defense lines, to reach the purpose of indirect stiffening frame structure.
But; Above-mentioned when setting up shear wall and carry out the indirect reinforcing of reinforced concrete frame structure; Exist the shear wall deadweight to increase along with the increase of the number of plies; The old and new's Base Design and construct and have problems such as differential settlement between difficult, agent structure and the newly-increased shear wall, thus cause the anti-seismic performance of frame construction low.
Summary of the invention
The application's technical problem to be solved provides a kind of reinforcement means of reinforced concrete frame structure, in order to solve the low problem of reinforced concrete frame structure anti-seismic performance in the existing reinforcement means.
In order to address the above problem, the application discloses a kind of reinforcement means of reinforced concrete frame structure, comprising:
Confirm that reinforcing bar coagulates the space for reinforcement of native frame construction, said space for reinforcement is positioned at below the grade that said reinforcing bar coagulates native frame construction place;
In said space for reinforcement, concrete wall are set with the frame column of the said reinforced concrete frame structure predeterminable range place that is separated by;
According to the position of the contact beam of reinforced concrete frame structure, between the frame column of the top of said concrete wall and said reinforced concrete frame structure, concrete beam is set;
Wherein, said concrete wall and said concrete beam are used to reinforce said reinforced concrete frame structure together.
Preferably, said method also comprises:
Connected node position at said concrete wall and said concrete beam is provided with horizontal haunch,
And/or,
Connected node position at said concrete beam and said concrete beam is provided with vertical haunch.
Preferably, when said contact beam is positioned at the top of end face of single footing of said reinforced concrete frame structure,
The position of said contact beam according to reinforced concrete frame structure, the step that concrete beam is set between the frame column of the top of said concrete wall and said reinforced concrete frame structure comprises:
Between the top of said concrete wall and the outermost frame column of said reinforced concrete frame structure, concrete beam is set.
Preferably, the end face of said concrete beam is concordant with the end face of getting in touch beam of said reinforced concrete frame structure.
Preferably, when the end face of said contact beam is concordant with the end face of the single footing of said reinforced concrete frame structure,
The position of said contact beam according to reinforced concrete frame structure, the step that concrete beam is set between the frame column of the top of said concrete wall and said reinforced concrete frame structure comprises:
Between the top of said concrete wall and the outermost frame column of said reinforced concrete frame structure and between per two adjacent frame columns concrete beam is set all.
Preferably, said method also comprises:
Along the length direction of concrete wall the level girt strip of putting more energy into is set on the top of said concrete wall.
Preferably, the said level girt strip of putting more energy into is positioned at the inboard and/or the outside of said concrete wall.
Compared with prior art, the application comprises following advantage:
The reinforcement means of the reinforced concrete frame structure that the application proposed; In the space for reinforcement below the grade at frame construction place; With the outermost frame column of the said reinforced concrete frame structure predeterminable range place that is separated by concrete wall are set; And between the frame column of the top of said concrete wall and said reinforced concrete frame structure, concrete beam is set, reinforces said reinforced concrete frame structure together through said concrete wall and said concrete beam.
The application's reinforcement means makes the position of concrete beam become the position of fixity of bottom frame post; Reduced the calculated height of frame construction bottom; Effectively alleviate the geological process that frame construction is born, reduced the earthquake response of structure, improved the anti-seismic performance of frame construction; And the quantity of reinforcement that main lateral resistant member such as Vierendeel girder, frame column causes because of geological process and the maximum relative storey displacement angle of structure have been reduced; The degree of this reduction quantity of reinforcement is widely, has contained all primary structure members of framework basically, is specially adapted to the embedding darker reinforced concrete frame structure of column footing.
Description of drawings
Fig. 1 is the flow chart of the reinforcement means of the application embodiment one said reinforced concrete frame structure;
Fig. 2 is the generalized section of the reinforced concrete frame structure after the application embodiment two said reinforcings;
Fig. 3 is the floor map of the reinforced concrete frame structure after the application embodiment two said reinforcings;
Fig. 4 is the generalized section of the reinforced concrete frame structure after the application embodiment three said reinforcings;
Fig. 5 is the floor map of the reinforced concrete frame structure after the application embodiment three said reinforcings;
Fig. 6 is the generalized section of the reinforced concrete frame structure after the application embodiment four said reinforcings.
The specific embodiment
For above-mentioned purpose, the feature and advantage that make the application can be more obviously understandable, the application is done further detailed explanation below in conjunction with the accompanying drawing and the specific embodiment.
The application is through being provided with concrete wall below the grade at reinforced concrete frame structure place; And be end points with concrete wall; Between the frame column of its top and frame construction, concrete beam is set, through concrete wall and concrete beam reinforced steel concrete frame construction together.This reinforcement means can reduce the calculated height of frame construction bottom, alleviates the earthquake response of frame construction, improves its anti-seismic performance.
Embodiment one
With reference to Fig. 1, show the reinforcement means flow chart of the application embodiment one said reinforced concrete frame structure, said method comprises:
Step S101 confirms that reinforcing bar coagulates the space for reinforcement of native frame construction, and said space for reinforcement is positioned at below the grade that said reinforcing bar coagulates native frame construction place.
The application embodiment adopts indirect reinforcement means reinforced steel concrete frame construction; When reinforcing; At first confirm space for reinforcement; Space for reinforcement with reinforced concrete frame structure in the present embodiment is arranged on below the grade at frame construction place, and promptly this space for reinforcement is positioned at the outside (promptly outdoor) of frame construction, and below the grade absolute altitude.
Step S102 in said space for reinforcement, is provided with concrete wall with the frame column of the said reinforced concrete frame structure predeterminable range place that is separated by.
After having confirmed space for reinforcement, concrete wall are set at first, for whole concrete frame structure, set concrete wall can be positioned at the periphery of whole frame construction, respectively the parallel sided of frame construction pairing with it.Certainly, the application is not limited to this mode, and those skilled in the art can only be provided with concrete wall according to actual conditions below the grade of a certain side of concrete frame structure or a few sides.
Wherein, The bottom of said concrete wall is higher than the bottom surface of the single footing of concrete frame structure, and perhaps, the bottom of said concrete wall is lower than the bottom surface of the single footing of concrete frame structure; Perhaps, the bottom of said concrete wall is concordant with the bottom surface of the single footing of concrete frame structure.
Wherein, the predeterminable range of being separated by between the frame column of said concrete wall and reinforced concrete frame structure is set according to actual conditions and is got final product, and the application does not limit concrete numerical value.
Step S103 according to the position of the contact beam of reinforced concrete frame structure, is provided with concrete beam between the frame column of the top of said concrete wall and said reinforced concrete frame structure.
According to the difference of the former beam position of being related of reinforced concrete frame structure, the application adopts the different methods that concrete beam is set, and concrete grammar will be introduced in the following description in detail.Certainly, can adopt the method that concrete beam is set with a kind of, the application does not limit this yet.
Wherein, said concrete wall and said concrete beam are used to reinforce said reinforced concrete frame structure together.
Preferably, the described reinforcement means of the application embodiment can also comprise:
Connected node position at said concrete wall and said concrete beam is provided with horizontal haunch, and/or, in the connected node position of said concrete beam and said concrete beam vertical haunch is set.Horizontal haunch or vertical haunch promptly can only be set, horizontal haunch and vertical haunch also can be set simultaneously, the application does not limit concrete set-up mode.
The described reinforcement means of the application embodiment makes the position of concrete beam become the position of fixity of bottom frame post; Reduced the calculated height of frame construction bottom; Effectively alleviated the geological process that frame construction is born; Reduce the earthquake response of structure, improved the anti-seismic performance of frame construction, and reduced the quantity of reinforcement that main lateral resistant member such as Vierendeel girder, frame column causes because of geological process and the maximum relative storey displacement angle of structure.
Embodiment two
With reference to Fig. 2 and Fig. 3, show the generalized section and the floor map of the reinforced concrete frame structure after reinforcing in the present embodiment respectively.
In the present embodiment; The contact beam of reinforced concrete frame structure is positioned at the top of end face of the single footing of said reinforced concrete frame structure; It is the separate setting of said contact beam and single footing; The contact beam is positioned at the top of whole single footing, and near the indoor terrace, particular location can be referring to Fig. 2.Indoor terrace 11 absolute altitudes at frame construction place equal grade 12 absolute altitudes; The height of indoor terrace 11 to frame construction one deck top board end face is 3600mm; The buried depth of single footing 2 is 1500mm; The height of single footing 2 is 500mm, and the height of frame construction bottom is taken to one deck top board end face, i.e. 4600mm by the end face of single footing 2.
Utilize the application's reinforcement means to reinforce this reinforced concrete frame structure to alleviate the earthquake response of frame construction, it is following mainly to reinforce step at present:
Particularly, the excavation space for reinforcement at the grade place at frame construction place, space for reinforcement are excavated to 200mm under the single footing 2 bottom surface absolute altitudes of frame construction downwards by grade absolute altitude position.
Said concrete wall 4 are positioned under the grade, along the periphery setting of reinforced concrete frame structure, and parallel with said frame column 1.The top of said concrete wall 4 and the distance of grade are 50mm.
Because the contact beam 6 of reinforced concrete frame structure is positioned at the top of single footing 2 end faces of said reinforced concrete frame structure in the present embodiment, so this step 3 comprises:
Between the top of said concrete wall 4 and the outermost frame column 1 of said reinforced concrete frame structure, concrete beam 3 is set.
The reinforcing bar keel of concrete beam 3 at first are set in this step, and said concrete beam 3 is the wide-flat beam of square-section.The upper longitudinal bar of said concrete beam 3 stretches into concrete wall 4 reinforcing bar keel after the node location that links to each other with concrete wall 4 bending downwards inner; The upper longitudinal bar of concrete beam 3 is in inside that the node location that links to each other with frame column 1 adopts the mode of bar planting to implant frame column 1.
Preferably, the end face of said concrete beam 3 is concordant with the end face of getting in touch beam 6 of said reinforced concrete frame structure.
After the reinforcing, the build-in position of reinforced concrete frame structure is the end face absolute altitude position of newly-increased concrete beam, and it is 3650mm that the height of frame construction bottom is taken to one deck top board end face by newly-increased concrete beam end face absolute altitude position.
The reinforcement means of the application embodiment is reduced to 3650mm with the calculated height of frame construction bottom by 4600mm; Effectively alleviated the geological process that frame construction is born; Reduce the earthquake response of structure, and then reduced the quantity of reinforcement that main lateral resistant member such as Vierendeel girder, frame column causes because of geological process and the maximum relative storey displacement angle of structure.
Embodiment three
With reference to Fig. 4 and Fig. 5, show the generalized section and the floor map of the reinforced concrete frame structure after reinforcing in the present embodiment respectively.
The difference of present embodiment and the foregoing description two is that the end face of the contact beam 6 of reinforced concrete frame structure is concordant with the end face of the single footing 2 of said reinforced concrete frame structure.
Therefore; If utilizing these embodiment three described methods reinforces reinforced concrete frame structure; Then described in its reinforcement means according to the position of the contact beam 6 of concrete frame structure, the step that concrete beam 3 is set between the frame column 1 of the top of said concrete wall 4 and said reinforced concrete frame structure comprises:
Between the top of said concrete wall 4 and the outermost frame column of said reinforced concrete frame structure and between per two adjacent frame columns concrete beam 3 is set all.
Other parts of present embodiment are similar basically with the foregoing description two, so description is fairly simple, relevant part gets final product referring to the part explanation of embodiment two.
Embodiment four
With reference to Fig. 6, show the generalized section of the reinforced concrete frame structure after the said reinforcing of present embodiment.
In the present embodiment, grade 12 absolute altitudes at reinforced concrete frame structure place are lower than indoor terrace 11 absolute altitudes, and then said concrete beam 3 is for being obliquely installed.
Present embodiment is with respect to the improvement of the foregoing description, along the length direction of concrete wall the level girt strip 5 of putting more energy into is set on the top of said concrete wall 4, and wherein, the said level girt strip of putting more energy into is positioned at the inboard and/or the outside of said concrete wall.
Because embodiment is similar basically with the foregoing description, the application discusses at this no longer in detail, and relevant portion gets final product referring to the description of the foregoing description.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
For aforesaid each method embodiment; For simple description; So it all is expressed as a series of combination of actions, but those skilled in the art should know that the present invention does not receive the restriction of described sequence of movement; Because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the manual all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
At last; Also need to prove; In this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby makes and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements; But also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises said key element and also have other identical element.
More than to the reinforcement means of a kind of reinforced concrete frame structure that the application provided; Carried out detailed introduction; Used concrete example among this paper the application's principle and embodiment are set forth, the explanation of above embodiment just is used to help to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to the application's thought, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the application.
Claims (7)
1. the reinforcement means of a reinforced concrete frame structure is characterized in that, comprising:
Confirm that reinforcing bar coagulates the space for reinforcement of native frame construction, said space for reinforcement is positioned at below the grade that said reinforcing bar coagulates native frame construction place;
In said space for reinforcement, concrete wall are set with the frame column of the said reinforced concrete frame structure predeterminable range place that is separated by;
According to the position of the contact beam of reinforced concrete frame structure, between the frame column of the top of said concrete wall and said reinforced concrete frame structure, concrete beam is set;
Wherein, said concrete wall and said concrete beam are used to reinforce said reinforced concrete frame structure together.
2. method according to claim 1 is characterized in that, also comprises:
Connected node position at said concrete wall and said concrete beam is provided with horizontal haunch,
And/or,
Connected node position at said concrete beam and said concrete beam is provided with vertical haunch.
3. method according to claim 1 is characterized in that, when said contact beam is positioned at the top of end face of single footing of said reinforced concrete frame structure,
The position of said contact beam according to reinforced concrete frame structure, the step that concrete beam is set between the frame column of the top of said concrete wall and said reinforced concrete frame structure comprises:
Between the top of said concrete wall and the outermost frame column of said reinforced concrete frame structure, concrete beam is set.
4. method according to claim 3 is characterized in that, the end face of said concrete beam is concordant with the end face of getting in touch beam of said reinforced concrete frame structure.
5. method according to claim 1 is characterized in that, when the end face of said contact beam is concordant with the end face of the single footing of said reinforced concrete frame structure,
The position of said contact beam according to reinforced concrete frame structure, the step that concrete beam is set between the frame column of the top of said concrete wall and said reinforced concrete frame structure comprises:
Between the top of said concrete wall and the outermost frame column of said reinforced concrete frame structure and between per two adjacent frame columns concrete beam is set all.
6. method according to claim 1 is characterized in that, also comprises:
Along the length direction of concrete wall the level girt strip of putting more energy into is set on the top of said concrete wall.
7. method according to claim 6 is characterized in that, the said level girt strip of putting more energy into is positioned at the inboard and/or the outside of said concrete wall.
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| CN201210185009.5A CN102733619B (en) | 2012-06-06 | 2012-06-06 | Strengthening method for reinforced concrete frame structure |
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| CN201210185009.5A CN102733619B (en) | 2012-06-06 | 2012-06-06 | Strengthening method for reinforced concrete frame structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103046766A (en) * | 2013-01-14 | 2013-04-17 | 北京筑福建设工程有限责任公司 | Method for lengthening columns, adding beams, resisting earthquakes and reinforcing for bottom frame structure |
| CN103967288A (en) * | 2014-04-11 | 2014-08-06 | 北京工业大学 | Method for structure reinforcing by H-shaped ductility column energy dissipation machine external pasting |
| CN106437189A (en) * | 2016-09-12 | 2017-02-22 | 上海市建筑科学研究院 | Method of reinforcing and restoring earthquake-damaged reinforced concrete frame |
| CN107435445A (en) * | 2017-08-24 | 2017-12-05 | 上海应用技术大学 | A kind of reinforcement means of reinforced concrete frame structure alien invasion node |
| CN113789975A (en) * | 2021-10-21 | 2021-12-14 | 苏州达康建筑科技有限公司 | Structure and method for reinforcing core area of concrete frame |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046766A (en) * | 2013-01-14 | 2013-04-17 | 北京筑福建设工程有限责任公司 | Method for lengthening columns, adding beams, resisting earthquakes and reinforcing for bottom frame structure |
| CN103967288A (en) * | 2014-04-11 | 2014-08-06 | 北京工业大学 | Method for structure reinforcing by H-shaped ductility column energy dissipation machine external pasting |
| CN106437189A (en) * | 2016-09-12 | 2017-02-22 | 上海市建筑科学研究院 | Method of reinforcing and restoring earthquake-damaged reinforced concrete frame |
| CN107435445A (en) * | 2017-08-24 | 2017-12-05 | 上海应用技术大学 | A kind of reinforcement means of reinforced concrete frame structure alien invasion node |
| CN113789975A (en) * | 2021-10-21 | 2021-12-14 | 苏州达康建筑科技有限公司 | Structure and method for reinforcing core area of concrete frame |
| CN113789975B (en) * | 2021-10-21 | 2022-08-05 | 苏州达康建筑科技有限公司 | Structure and method for reinforcing core area of concrete frame |
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